JP5354488B2 - Method for defining excess water value of exothermic composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of stipulating an excess water value indicating the amount of excess water in an optional exothermic composition in an optional time period, a die-formable exothermic composition and heating elements in various sizes and various shapes. <P>SOLUTION: In the method of stipulating the excess water value of the exothermic composition, the exothermic composition containing the excess water, and the heating elements, the method is for measuring the excess water of the exothermic composition as the index value of the amount of excess water at present by an excess water value measuring apparatus with a through-hole and an infiltration material and stipulating the excess water value of the exothermic composition at present. The infiltration material is a filter medium whose water filtration time is &le;120 seconds/100 ml, filling inside the through-hole of the measuring plate of the excess water value measuring apparatus bottomed by the filter medium is performed, the infiltration distance to the filter medium of the water or aqueous solution of the exothermic composition after five minutes is measured, and a value obtained by dividing the infiltration distance by the height of the through-hole and multiplying it by 100 further is defined as the excess water value of the exothermic composition at present. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention quickly measures the current excess water amount of the exothermic composition and the exothermic composition in the exothermic body, and defines a surplus water value of the exothermic composition that defines the surplus water value that is an index of the surplus water amount. The present invention relates to a water heating composition, a heating element, and a method for manufacturing the heating element.

  Conventionally, heating elements such as iron powder, activated carbon, reaction accelerators (inorganic electrolytes, etc.), water, and heat generating compositions that generate heat when in contact with oxygen in the air are stored in a breathable storage body. Widely used. As a general structure of these heating elements, a powder exothermic composition mixed with metal powder, activated carbon, a reaction accelerator (inorganic electrolyte, etc.), water, etc., which generates heat upon contact with oxygen in the air, is breathable. The heating element is housed in a flat bag. In addition, exothermic compositions and heating elements that can produce heating elements of various shapes and sizes have been proposed. In addition to being used as a warming tool for the purpose of warming up against cold, etc., the heating element is used as a thermal treatment tool for stiff shoulders, neuralgia, muscle pain, etc., and by simply applying it to the affected area, blood circulation is promoted. Since it has an effect of relieving muscle pain and the like, it is widely used as a simple blood circulation promoting treatment tool.

Patent Document 1 discloses a sherbet-like exothermic composition having easy-moving water defined by easy-moving water values, which can produce various shapes of heating elements such as circles and triangles.
In Patent Document 2, a thick cream-like exothermic composition containing a thickener is added by a printing method such as screen printing, and a thickener that can produce various shapes and sizes of heating elements is included. A viscous creamy or pasty exothermic composition is also disclosed.

JP 2002-155273 A JP-A-9-75388

1. When a conventional powder exothermic composition without formability was used, there were many restrictions on the shape and size.
2. The easy water value and the measurement method of Patent Document 1 have the following problems.
1) The mobile water value is composed of the moisture value of the exothermic composition and the true moisture amount corresponding to the blended moisture amount of the exothermic composition, and the total moisture amount (true moisture value) added to the exothermic composition. The amount of surplus water (moisture value) in the exothermic composition relative to the value is quantified, and is basically a value indicating the amount of surplus water in the exothermic composition at the time of production. A value indicating the amount of mobile water, expressed as a numerical value of the ratio of the true moisture value, which is the permeation distance of the total water amount corresponding to the water content, to the filter paper and the water value, which is the permeation distance of the excess water amount in the exothermic composition to the filter paper Therefore, it took time and effort to measure.
2) The mobile water value is a specified value that regulates the amount of excess water in the exothermic composition by measuring the moisture value and the true moisture value at the same time, and is manufactured after the exothermic composition is incorporated into the heating element. It was virtually impossible to define the mobile water value of the exothermic composition over time. That is, even if the total water content of the exothermic composition other than at the time of blending is measured with an infrared moisture meter or the like, an accurate water amount cannot be obtained, and the mobile water value is defined as the excess water amount of the exothermic composition at the time of manufacture. However, there is a drawback that the amount of excess water in the exothermic composition over time after production cannot be specified.
3) The mobile water value is, by definition, a specified value that is applied only when the exothermic composition is blended.
3. The viscous cream-like or paste-like exothermic composition of Patent Document 2 has a large influence of the thickener, has good moldability but has poor exothermic properties, and only a heating element with a short exotherm can be produced.
4). Conventional heating elements of the pasting type have inconveniences that they lack flexibility and adhesion, and are not peeled off from clothing or the body during use or cannot be efficiently transferred to the body.

  From the above, the problem of the present invention is that it is useful for molding, but in excess water that is harmful to heat generation, it is easy to operate, can easily and quickly define the amount of excess water in the exothermic composition, and In addition to the amount of excess water in the exothermic composition at the time of manufacture, the amount of excess water in the exothermic composition over time after production can also be specified, the method of defining the excess water value in the exothermic composition and the amount of excess water in the new exothermic composition, The purpose is to provide a surplus water value that is a new display value, and it is easy to install, and the flexibility of the heating element does not deteriorate before, during, and after heating. While having excellent thermal effect, it is highly safe, can efficiently transmit the heat of the heating element to the body, can maintain stable heat generation characteristics, and has good conformity to the heated body It is practical with good resilience, good fit and feel Has a soft, and to provide various applications, various shapes can answer desired, the heating element of a wide size (含温 heat patch) and methods of use thereof.

As a result of intensive studies to solve these problems, the present inventor has reached the present invention.
That is, the method for defining the surplus water value of the exothermic composition of the present invention is as described in claim 1.
Excess water value measuring device having a through-hole and a penetrating material allow the exothermic composition to be measured without revealing the total amount of water when measuring the exothermic composition in the amount of moisture that decreases with time in the exothermic composition after production. Measuring the surplus water as an index value of the current surplus water amount, and defining the surplus water value of the current exothermic composition indicating the surplus water amount of the exothermic composition as an index for the total water content at the time of measurement ,
The permeation material is a filtration material having a filtration time of 120 seconds / 100 ml or less, and the exothermic composition is filled in the through hole of the measurement plate of the surplus water value measuring device bottomed on the filtration material. Measure the penetration distance to the filter medium of water or an aqueous solution of the exothermic composition in the through hole of the measurement plate after minutes,
Excess water value = [penetration distance (mm) / height of through-hole (exothermic composition) (mm)] × 100
By
Divide the permeation distance by the height of the through hole proportional to the total water content at the time of measurement of the exothermic composition filled in the through hole, and multiply by 100 to obtain the value obtained at the time of measurement in the exothermic composition. The surplus water value of the present exothermic composition indicating the surplus water amount relative to the total water amount is used.
Moreover, the prescription method of the surplus water value of the exothermic composition of Claim 2 WHEREIN: In the prescription method of the surplus water value of the exothermic composition of Claim 1,
Excess water value measuring device with a cylindrical through-hole and penetrating material can generate heat without revealing the total water content when measuring the exothermic composition in the exothermic composition after production. It is a method of measuring the surplus water value of the present exothermic composition by measuring the surplus water of the composition as an index value of the current surplus water amount and indicating the surplus water amount of the exothermic composition as an index with respect to the total water content at the time of measurement. And
A support plate made of the excess water level measuring device from the non-water-absorbing material, the measurement plate, the filling plate, plastic film, composed of a pressing plate, wherein the osmotic material is drainage time of 120 seconds / 100M1 following filter paper, said Using the exothermic composition, a filter paper with eight reference lines radially written at 45 ° intervals from the center point and having a drainage time of 120 seconds / 100 ml or less is placed on a support plate, and the filter paper is placed at the center of the filter paper. surface length 0.99 mm × width 100 mm with a cylindrical through hole Place the smooth measurement plate, place the cylindrical through-holes near to the heat-generating composition, moving along a filling plate on measuring plate, wherein the exothermic composition is filled, further wherein as the exothermic composition does not cause an exothermic reaction during the measurement, place the non-water-absorbing plastic film so as to cover a cylindrical through-hole, further thereon, the pressing plate It was placed, after the hold 5 minutes, Take out the filter paper, along the radial reference line, read the penetration distance of water or aqueous solution from the diameter circle of the cylindrical through hole of the measuring plate to the penetration tip in mm units, and read each of the 8 A value (mm) obtained by arithmetically averaging the permeation distance (m1, m2, m3, m4, m5, m6, m7, m8) is proportional to the total water content at the time of measurement of the exothermic composition filled in the cylindrical through hole. The value obtained by dividing the height of the cylindrical through hole (mm) and multiplying by 100 is the surplus water value of the current exothermic composition indicating the surplus water amount with respect to the total water amount at the time of measurement in the exothermic composition. Features
Moreover, the prescription method of the surplus water value of the exothermic composition of Claim 3 WHEREIN: In the prescription method of the surplus water value of the exothermic composition of Claim 1,
Excess water value measuring device with a cylindrical through-hole and penetrating material can generate heat without revealing the total water content when measuring the exothermic composition in the exothermic composition after production. It is a method of measuring the surplus water value of the present exothermic composition by measuring the surplus water of the composition as an index value of the current surplus water amount and indicating the surplus water amount of the exothermic composition as an index with respect to the total water content at the time of measurement. And
The surplus water value measuring device is composed of a support plate, a measurement plate, a filling plate, a plastic film, and a pressing plate made of a non-water-absorbing material, and the permeation material is JIS P3801 “Type 2” filter paper, The JIS P3801 “Type 2” filter paper on which eight reference lines are written at 45 ° intervals radially from the center point is placed on a support plate, and the diameter of 29 mm × height at the center of the filter paper a cylindrical through hole of 20mm Place the smooth measurement plate surface of the lifting one length 150 mm × width 100 mm, place the cylindrical through-holes near to the heat-generating composition, moving along a filling plate on measuring plate, filling the heat-generating composition, further, the so exothermic composition does not cause an exothermic reaction during the measurement, place the non-water-absorbing plastic film so as to cover a cylindrical through-hole, further thereon, pressing Place the board, 5 minutes After holding the filter paper, remove the filter paper, read the penetration distance of water or aqueous solution along the reference line written radially, and read the distance from the diameter circle of the cylindrical through hole of the measurement plate to the penetration tip in mm units. When measuring the exothermic composition in which the columnar through-holes were filled with values (mm) obtained by arithmetically averaging the eight permeation distances (m1, m2, m3, m4, m5, m6, m7, m8) . The surplus water of the present exothermic composition, which indicates the surplus water amount relative to the total water amount at the time of measurement in the exothermic composition, divided by the height of the cylindrical through hole (mm) proportional to the total moisture amount and further multiplied by 100 It is characterized by a value.

1. The method for defining the surplus water value of the exothermic composition of the present invention is easy to operate, can easily and quickly define the current surplus water amount in the exothermic composition, and not only the surplus water amount of the exothermic composition at the time of manufacture. Further, it is possible to provide a surplus water value that is a display value of the surplus water value in the exothermic composition and a surplus water value prescribing method in the exothermic composition that can also regulate the surplus water amount of the exothermic composition over time after production.
2. The surplus water value of the present invention is measured by measuring the permeation distance of water or aqueous solution of the exothermic composition into the filter medium using a filter medium having a drainage time of 120 seconds / 100 ml or less, and measuring the permeation distance filled with the exothermic composition. Since the value obtained by dividing by the height of the cylindrical through-hole of the plate is defined as the surplus water value, not only the total moisture content of the exothermic composition at the time of manufacture, but also the current total moisture content of the exothermic composition The amount of surplus water in the current exothermic composition at the time of measurement can be expressed as an index, and the amount of surplus water in the current exothermic composition can be defined easily and quickly, and used for judgment of moldability, exothermic characteristics and quality control of the exothermic composition. And practicality is very high.
3. Since the surplus water exothermic composition of the present invention has exothermic properties and moldability, it is a molded product, and it is possible to provide exothermic exothermic composition molded products of various sizes and shapes.
4). Since the surplus water exothermic composition having an excess water value of 0.5 to 80 according to the present invention has moldability, a variety of sizes and shapes of exothermic composition molded bodies can be molded. Body, rectangular heating element, hot spring heating element, foot heating element, segment heating element heating element, rigid soft heating element, stripe heating element, detachable heating element, telescopic heating element, band heating element, tunnel ventilation heating element, drug heating Various sizes and shapes of heating elements such as body, detachable tunnel ventilation heating element, detachable drug heating element, eye temperature heating element, face temperature heating element, outer temporary folding heating element with outer bag can be manufactured and provided.
5. The segment heating part heating element defined by the loop stiffness of the present invention, when the segment heating part heating element is placed along a body to be heated, regardless of the weight of the heating composition of the heating element, It is possible to provide a heating element that can easily follow the body to be heated and has no resilience that does not return to its original state due to the repulsive force even after the heating.
6). The bending heating element of the present invention, in particular the stripe heating element, does not bend easily except in the direction having the minimum bending resistance, and has a direction for ease of bending, and the bending resistance in a direction substantially perpendicular to the minimum bending resistance. Has the maximum bending resistance and has a structure that is extremely easy to bend in only one direction compared to the other direction, so it is easy to handle and the change in minimum bending resistance deteriorates before, during, and after heat generation. In addition, since flexibility can be maintained at all times, a sufficient thermal effect can be obtained while keeping fit to the body. Also, sufficient flexibility can be maintained at all times from the beginning of use as well as the end of use, and the concave portion of the partitioning portion and the convex portion of the sectional heating portion are provided in a stripe shape, so that both surfaces of the heating element are uneven stripes. As a result of being able to be used along the body part and exhibiting sufficient thermal effect and suppressing heat storage, redness, pain, swelling, rash, etc. are extremely unlikely to occur even after repeated use for a long time. An excellent effect as a heating device can be obtained.
7). The tunnel-ventilated heating element of the present invention can suppress the maximum heat generation temperature to less than 42 ° C., thus avoiding low-temperature burns, obtaining a desired duration at a desired temperature, and being excellent as a medical device. Can be obtained.
8). The drug heating element of the present invention can prevent the interaction between the exothermic composition and the pressure-sensitive adhesive layer,
A stable effect of the drug can be maintained even during the storage period, and an excellent effect can be obtained as a medical device for the purpose of relieving menstrual pain, neuralgia, muscle pain, etc., and recovering from fatigue.

The present invention is a method for defining the excess water value of the exothermic composition, the excess water-containing exothermic composition, the heating element and the method for producing the heating element,
Among them, a segmented heating unit heating element that is composed of a segmented heating unit and a partitioning part and that incorporates a storage body defined by loop stiffness into a constituent member is a heating element having flexibility with a good touch feeling. That is, the segmented heating element heating element of the present invention can be easily applied when the segmented heating element heating element is placed along a body or other heated body, regardless of the weight of the heating composition of the heating element. It is a heating element that has a non-repulsive property that can be along a warm body and does not return to its original state by a repulsive force even after being along.
Conventionally, the minimum bending resistance, which has been used, is not sufficient as an index of flexibility because it is not possible to define repulsion due to bending even if it can define flexibility.
In the present invention, the storage body defined by the loop stiffness is used as the storage body that is an important component of the heat generation body, and the heat generation body having flexibility in consideration of both flexibility and resilience is realized.
That is,
The method of defining the surplus water value of the exothermic composition of the present invention is based on the present surplus water amount in the exothermic composition based on the permeation distance to the permeation material or filter paper of surplus water and the height of the exothermic composition. It is specified as a value. That is, the surplus water value measuring device having a through hole and a permeating material or filter paper are used to permeate surplus water of the exothermic composition into the permeating material, and depending on the permeation distance and the height of the through hole of the measuring plate of the surplus water value measuring device The permeation distance is divided by the height of the through hole, and a value multiplied by 100 is calculated and defined as the surplus water value of the exothermic composition.
According to the method for defining the surplus water value of the present invention, the surplus water amount in the exothermic composition can be easily and quickly defined as a numerical value, and the current surplus water amount is obtained as needed. Thereby, a health check of the exothermic composition became possible, and it became possible to manufacture a heating element that does not contain surplus water.
The penetration distance of the water or aqueous solution of the present invention into the penetrating material or filter paper is the distance from the inner wall surface of the through hole of the measurement plate to the penetrating tip of the water or aqueous solution of the exothermic composition that has penetrated the penetrating material. Preferably, it is the distance to the penetration tip of the water or aqueous solution of the exothermic composition that has penetrated the penetration material along the reference line.
Although there is no restriction | limiting in the said through-hole, A columnar through-hole and a square columnar through-hole are mentioned as an example. In particular, a cylindrical through hole is preferable. In the case of a cylindrical through-hole, the permeation distance is the water of the exothermic composition that has permeated the penetrant or the filter paper from the diameter circle of the cylindrical through-hole that is the peripheral end portion (circumferential diameter, etc.) of the through-hole of the measurement plate or This is the distance to the penetration tip of the aqueous solution. Preferably, it is the distance to the permeation tip of water or an aqueous solution of the exothermic composition that has permeated the permeation material or filter paper along the reference line.
The penetrant or filter paper is preferably a penetrant or filter paper in which a central point is determined in an arbitrary region where the permeation distance can be measured, and eight base lines are drawn at equal angles through the central point.
Preferably, the penetrant or filter paper is a penetrant or filter paper having the same shape as the planar shape of the peripheral edge of the through hole of the measurement plate, whereby the positioning of the through hole of the measurement plate on the penetrant Further, the permeation distance can be easily measured by the eight reference lines extending from the center point having the same shape as the planar shape of the peripheral end portion of the through hole.
The method for defining the excess water value of the exothermic composition of the present invention is easy to operate regardless of the total amount of water in the exothermic composition, can quickly define the excess water amount in the exothermic composition, and can be used at the time of production. In addition to the amount of excess water in the exothermic composition and the amount of excess water in the exothermic composition over time after production, the excess water value of the exothermic composition after the exothermic composition is incorporated into the heating element is also determined over time. The amount of water can be defined as a surplus water value. This is a practical value.

That is, a preferable method for defining the excess water value of the exothermic composition of the present invention is:
A method for measuring surplus water of an exothermic composition as an index value of a current surplus water amount by a surplus water value measuring device having a through-hole and a penetrant, and defining a surplus water value of a current exothermic composition, The permeating material is a filtering material having a filtering time of 120 seconds / 100 ml or less, filled in the through hole of the measuring plate of the surplus water value measuring device bottomed on the filtering material, and the exothermic composition after 5 minutes. Exothermic composition of water or an aqueous solution of water, measuring the permeation distance into the filter medium, dividing the permeation distance by the height of the through-hole, and multiplying by 100 to obtain the surplus water value of the current exothermic composition It is a method for defining the surplus water value of goods,
It is a method of measuring the surplus water value of the exothermic composition as an index value of the current surplus water amount by the surplus water value measuring device having a cylindrical through-hole and a penetrant, and defining the surplus water value of the current exothermic composition. The surplus water value measuring device is composed of a support plate made of a non-water-absorbing material, a measurement plate, a filling plate, a plastic film, and a pressure plate, and the permeation material is filter paper having a drainage time of 120 seconds / 100 ml or less, In an environment of 20 ± 1 ° C., using a heat-generating composition that is a sample prepared in the environment, eight reference lines were written radially from the center point at intervals of 45 °. / 100 ml or less of filter paper is placed on a support plate, and a measuring plate having a cylindrical surface with a diameter of 29 mm × height 20 mm and a length of 150 mm × width of 100 mm is placed at the center of the filter paper. Exothermic composition near the columnar through hole Place and move the filling plate along the measurement plate to fill the exothermic composition, and to cover the cylindrical through-hole so that the exothermic composition does not cause an exothermic reaction during the measurement. Place a film, place a pressure plate on it, hold it for 5 minutes, take out the filter paper, and measure the penetration distance of water or aqueous solution along the radial reference line. The distance from the diameter circle to the penetration tip is read in mm units, and the eight average penetration values (m1, m2, m3, m4, m5, m6, m7, m8) that have been read are calculated (mm) as a circle. It is a method for defining the surplus water value of the exothermic composition that is divided by the height (mm) of the columnar through-hole and further multiplied by 100 as the surplus water value.
It is a method of measuring the surplus water value of the exothermic composition as an index value of the current surplus water amount by the surplus water value measuring device having a cylindrical through-hole and a penetrant, and defining the surplus water value of the current exothermic composition. The surplus water value measuring device is composed of a support plate made of a non-water-absorbing material, a measurement plate, a filling plate, a plastic film, and a pressure plate, and the permeation material is JIS P3801 “Type 2” filter paper, 20 ± 1 JIS P3801 “Type 2” filter paper in which eight reference lines are written at 45 ° intervals radially from the center point using a heat-generating composition that is a sample adjusted to the environment under the environment of ℃ Is placed on the support plate, and a measuring plate having a length of 150 mm × width of 100 mm having a cylindrical through-hole with a diameter of 29 mm × height of 20 mm is placed in the center of the filter paper, and the vicinity of the cylindrical through-hole is placed. Place the exothermic composition and the filling plate Move along the measurement plate, fill the exothermic composition, and place a non-water-absorbing plastic film so as to cover the cylindrical through-hole so that the exothermic composition does not cause an exothermic reaction during the measurement, Then, put a press plate on it, hold it for 5 minutes, take out the filter paper, and permeate the penetration distance of water or aqueous solution from the diameter circle of the cylindrical through hole of the measurement plate along the radial reference line The distance to the tip is read in mm, and the value (mm) obtained by arithmetically averaging the eight permeation distances (m1, m2, m3, m4, m5, m6, m7, m8) read is the height of the cylindrical through-hole. It is a method of defining the surplus water value of the exothermic composition with the surplus water value divided by (mm) and further multiplied by 100,
It is a method of measuring the surplus water value of the exothermic composition as an index value of the current surplus water amount by the surplus water value measuring device having a cylindrical through-hole and a penetrant, and defining the surplus water value of the current exothermic composition. The surplus water value measuring device is composed of a support plate, a measurement plate, a filling plate, a plastic film, and a pressing plate made of a non-water-absorbing material, the penetrant has a retained particle diameter of 4 to 6 μm, and a drainage time 70 standard-to-90 seconds / 100 ml filter paper, in an environment of 20 ± 1 ° C., using the exothermic composition that is a sample adjusted in the environment, and eight criteria radially at 45 ° intervals from the center point A filter paper having a retained particle diameter of 4 to 6 μm and a drainage time of 70 to 90 seconds / 100 ml is placed on a support plate, and a circle having a diameter of 29 mm and a height of 20 mm is placed in the center of the filter paper. 150mm long x 100m wide with columnar through holes Place a measuring plate with a smooth surface, place the exothermic composition in the vicinity of the cylindrical through hole, move the filling plate along the measuring plate, fill the exothermic composition, and the exothermic composition during the measurement In order not to cause an exothermic reaction, a non-water-absorbing plastic film is placed so as to cover the cylindrical through-hole, and further, a holding plate is placed thereon, and after holding for 5 minutes, the filter paper is taken out and written radially. Along the reference line, the permeation distance of water or aqueous solution was read in millimeters from the diameter circle of the cylindrical through hole of the measurement plate to the permeation tip, and each of the eight permeation distances (m1, m2, m3) read , M4, m5, m6, m7, m8) of the exothermic composition in which the value (mm) obtained by arithmetic averaging is divided by the height (mm) of the cylindrical through hole, and the value multiplied by 100 is the surplus water value. This is a method for defining surplus water values.

  The penetration distance of water or an aqueous solution of the exothermic composition of the present invention is the distance from the inner wall surface of the through hole to the penetration tip of the penetration material or filter paper. Moreover, it is the distance from the diameter circle which is an inner wall surface of a cylindrical through-hole to the penetration | infiltration tip by a osmosis | permeation material or filter paper.

According to the surplus water value of the present invention, the exothermic composition having moisture is classified into a hydrous exothermic composition having a surplus water value of 0 and a surplus water exothermic composition having a surplus water value exceeding 0.
Furthermore, as the surplus water exothermic composition having moldability, the surplus water exothermic composition having an excess water value of 0.5 to 80 is preferable.
Mold formability is a function of the excess water exothermic composition, and the excess water exothermic heat is formed even after the mold having a through hole is filled with the excess water exothermic composition and the mold is removed. The exothermic composition molded body of the composition has a function capable of maintaining the shape of the through hole.

  The inventor of the present invention indicates that the permeation distance of surplus water in the exothermic composition into the permeation material (filter medium or filter paper) is proportional to the amount of surplus water in the exothermic composition and the height or thickness of the exothermic composition. As a result, of the water contained in the exothermic composition, the amount of surplus water that can be easily and freely moved out of the system or penetrated was quantified to obtain the surplus water value.

  The exothermic composition or its component mixture of the present invention, which is an exothermic mixture obtained by partial oxidation treatment or a precursor thereof, and a reaction mixture that is a mixture of components of the exothermic composition before partial oxidation treatment can be similarly treated.

  Regardless of the total amount of water in the exothermic composition, the method for defining the excess water value in the exothermic composition of the present invention can specify the excess water amount in the exothermic composition at the time of measurement, and the measurement operation is simple and easy. This is a method of calculating a new specified amount of surplus water that can be measured quickly and indicates the amount of surplus water in the exothermic composition at the time of measurement.

  The exothermic composition of the present invention having an excess water value defined by the method for defining the excess water value in the exothermic composition of the present invention can predict moldability and exothermic properties, and is useful for designing exothermic compositions and exothermic bodies. . In addition, even after manufacturing the heating element, by measuring the excess water value of the heating composition in the heating element, the deterioration state of the heating composition and the heating element due to moisture reduction, that is, the heating composition and heating element at that time The health of the heating element can be easily checked.

  When the surplus water in the exothermic composition or mixed composition of the present invention becomes an appropriate amount, the hydrophilic groups in the components of the composition are hydrated by dipolar interaction or hydrogen bonding, and the vicinity of the hydrophobic groups. It is presumed to exist with high structural properties. As a result, it is estimated that sandy sand is formed, and moldability of the exothermic composition occurs. In some sense, surplus water is a connected substance. In addition to this, there is also water in a state that can be called free water, and if excess water increases, the structure will soften and free water will increase. By using an appropriate amount of surplus water, each component particle is held together by the surface tension of moisture, causing the exothermic composition to form, and the moisture does not substantially function as an air barrier layer. It generates heat upon contact. It is the surplus water value of the present invention that determines an appropriate amount of surplus water.

  The method for defining the surplus water value of the exothermic composition of the present invention is the exothermic heat present in a hole in a cylindrical template having a diameter of 29 mm and a height of 20 mm provided on a filter medium having a drainage time of 120 seconds / 100 ml or less. The permeation distance from the diameter circle of the template of water or aqueous solution 5 minutes after penetrating the periphery of the composition was measured, and the height (mm) of the exothermic composition which is the height of the cylindrical through hole of the measurement plate ) By dividing the permeation distance (mm) and multiplying by 100, that is, the value obtained by multiplying the permeation distance (mm) per unit height (mm) of the exothermic composition by 100 is the surplus water value. .

  More preferably, the method for defining the excess water value of the exothermic composition of the present invention is the exothermic heat present in a hole in a cylindrical template having a diameter of 29 mm and a height of 20 mm provided on JIS P3801 “Type 2” filter paper. The permeation distance from the diameter circle of the template of water or aqueous solution 5 minutes after penetrating the periphery of the composition was measured, and the height (mm) of the exothermic composition which is the height of the cylindrical through hole of the measurement plate ) By dividing the permeation distance (mm) and multiplying by 100, that is, the value obtained by multiplying the permeation distance (mm) per unit height (mm) of the exothermic composition by 100 is the surplus water value. .

  The penetrating material of the present invention is not limited as long as the excess water of the exothermic composition can be specified as the penetrating distance, but examples thereof include paper, filter media, and non-woven fabric. Filter media is preferred.

  Examples of the filter medium include nonwoven fabric and filter paper. A preferred filter medium is filter paper.

  The filter paper has a drainage time of preferably 1800 seconds / 100 ml or less, more preferably a drainage time of 720 seconds / 100 ml, still more preferably a drainage time of 480 seconds / 100 ml, still more preferably. The drainage time is 300 seconds / 100 ml, more preferably the drainage time is 240 seconds / 100 ml, more preferably the filter paper has a drainage time of 120 seconds / 100 ml or less, more preferably the drainage time is 10 To 120 seconds / 100 ml, more preferably the drainage time is 70 to 120 seconds / 100 ml, more preferably the drainage time is 70 to 90 seconds / 100 ml, and still more preferably the retained particle size is 4 to 9 μm. And the drainage time is 70 to 90 seconds / 100 ml, more preferably the retained particle diameter is 4 to 8 μm, and the drainage time is 70 to 90 seconds. 100 ml, more preferably the retained particle diameter is 4 to 7 μm, and the drainage time is 70 to 90 seconds / 100 ml, more preferably the retained particle diameter is 4 to 6 μm and the drainage time is 70. ˜90 seconds / 100 ml, more preferably the retained particle diameter is 4.5 to 5.5 μm, the drainage time is 70 to 90 seconds / 100 ml, more preferably the retained particle diameter is 5 μm, and The drainage time is 80 seconds / 100 ml.

The filter paper is preferably JIS P3801, “1 type”, “2 types”, “3 types”, “4 types”, “5 types A”, “5 types B”, “5 types C”, “6” An example of each type of filter paper is “Seeds”.
The filter paper is preferably JIS P3801 “Type 2” filter paper.
JIS P3801 “Type 2” filter paper has a drainage time of 120 seconds / 100 ml or less.
The JIS P3801 “Type 2” filter paper of the present invention is a filter paper corresponding to JIS P3801 “Type 2” filter paper such as a filter paper having a retained particle diameter of 4 to 9 μm and a drainage time of 70 to 90 seconds / 100 ml. Including.

  The JIS P3801 “Type 2” filter paper is a filter paper No. manufactured by Toyo Filter Paper Co., Ltd. 2 and filter paper No. manufactured by Nakamura Science Co., Ltd. 2 and Whatman filter paper grade 2 are examples.

  The shape of the permeation material such as the filter paper is not limited as long as the excess water value can be defined. An example is a circle or a rectangle.

A method for defining the surplus water value of the exothermic composition of the present invention will be described with reference to FIGS. 1 to 5 using JIS P3801 “Type 2” filter paper and surplus water value measuring device 15.
FIG. 1 is a plan view showing a filter paper provided with a reference line.
FIG. 2 is a cross-sectional view showing the measuring apparatus.
FIG. 3 is a cross-sectional view showing the operation.
FIG. 4 is a cross-sectional view showing the measurement.
FIG. 5 is a plan view showing a filter paper for calculating the surplus water value.
In an environment of 20 ° C., using the exothermic composition 14 which is a sample prepared in the environment, eight reference lines 2 are written radially at 45 ° intervals from the center point. (No. 2) The filter paper 1 (FIG. 1) is placed on a support plate (stainless steel plate or the like) 8 and a length of 150 mm having a cylindrical through-hole 4 having a diameter of 29 mm and a height of 20 mm at the center of the filter paper 1. X A measuring plate 3 having a smooth surface of 100 mm in width is placed (FIG. 2), a heat generating composition (sample) 14 is placed in the vicinity of the cylindrical through hole 4, and the filling plate 9 is moved along the measuring plate 3 (see FIG. 2). 3) A non-water-absorbing plastic film (70 μm polyethylene film or the like) is filled so as to cover the cylindrical through-hole 4 so that the exothermic composition 14 is filled and the exothermic composition 14 does not cause an exothermic reaction during the measurement. 11 is placed on top of it. 5 mm long × 150 mm long × 150 mm wide stainless steel plate 10 is placed (FIG. 4), and after holding for 5 minutes, the filter paper 1 is taken out (FIG. 5), along the radial reference line 2 with water or The penetration distance 13 of the aqueous solution was read in mm from the diameter 7 of the cylindrical through-hole having a diameter of 5 mm of the measuring plate 3 to the penetration tip of the penetration mark 12 and each of the eight penetration distances 13 ( m1, m2, m3, m4, m5, m6, m7, m8) is calculated by dividing the value (mm) by the height (mm) 6 of the cylindrical through-hole, and multiplying it by 100, to obtain a value obtained by surplus water Value.
The surplus water value of the sample is not limited, but it is preferable to measure three points for the same sample, average the three surplus water values, and use the average value as the surplus water value of the sample. . The surplus water value is related to the amount of surplus water in the current exothermic composition and is not related to the total amount of water in the exothermic composition.

The surplus water value of the present invention is
Penetration distance (mm)
Excess water value = ────────────────────── × 100
Height of through hole (exothermic composition) of measurement plate (mm)
And preferably

Arithmetic average of 8 penetration distances (mm)
Surplus water value = ───────────────────── × 100
Height of cylindrical through-hole of measurement plate (mm)

It is.

  The penetrant used in the method for defining the excess water value of the exothermic composition, such as filter paper, can be converged at the center point at an arbitrary point in the region where the permeation distance can be measured, and so on. Eight reference lines provided at an angle and a peripheral shape line having the same shape as the planar shape of the peripheral end of the through hole of the measurement plate, for example, a diameter circle (dotted circle in FIG. 1) of the cylindrical through hole Penetration materials such as filter papers are preferred. The line type at the time of description does not matter. When the cross section of the through-hole in the portion that comes into contact with the penetrating material has a shape other than a circle, the shape corresponding to the cross-sectional shape may be described. Needless to say, a penetrating material such as filter paper on which the reference line and the planar shape of the peripheral end of the bottom of the through hole are not drawn can also be used.

  The material of the surplus water value measuring device such as the measurement plate is not limited as long as it is non-aqueous except for a penetrating material such as filter paper, but a metal such as stainless steel, a synthetic resin such as a thermoplastic resin or a thermosetting resin, Examples include minerals such as stones and rocks.

  The method for producing a heating element using the surplus water value of the present invention measures the surplus water value of the exothermic composition by the surplus water value measuring method, and determines the composition and quality control of the moldable surplus water exothermic composition. And a method for producing an excess water exothermic composition, and by controlling the excess water value of the excess water exothermic composition, the exothermic composition molded body is molded into various shapes and sizes of heating elements. It is a method of manufacturing.

The surplus water exothermic composition of the present invention has an excess water value of 0 based on a value obtained by dividing the permeation distance of surplus water into the filter medium or filter paper by the height of the through hole of the measurement plate, which is the height of the measurement exothermic composition. Exothermic composition having excess water, preferably a filter medium having a drainage time of 120 seconds / 100 ml or less, more preferably a filter paper having a drainage time of 120 seconds / 100 ml or less, more preferably JIS P3801 “2 types” The surplus water value specified by the above surplus water value regulation method using a filter paper, more preferably a filter paper having a retained particle diameter of 4 to 6 μm and a drainage time of 70 to 90 seconds / 100 ml exceeds 0. It is an exothermic composition having a property. In particular, a surplus water exothermic composition having an excess water value of 0.5 to 80, moldability, and a rising temperature rising rate of 0 ° C./5 minutes or more, preferably 1 ° C./5 minutes or more is preferred.
The water-containing exothermic composition of the present invention is a method for defining the excess water value using JIS P3801 “Type 2” filter paper, preferably filter paper having a retention particle diameter of 4 to 6 μm and a drainage time of 70 to 90 seconds / 100 ml. It is an exothermic composition whose surplus water value prescribed | regulated by 0 is 0.
Although the surplus water exothermic composition of the present invention and the hydrous exothermic composition of the present invention have different surplus water values, the same components can be used.

  The surplus water value of the exothermic composition (including the exothermic composition molded body) in the exothermic body of the present invention may be defined according to the method for defining the excess water value of the exothermic composition by taking out the exothermic composition from the exothermic body. .

Hereinafter, description will be made using a moldable water-containing exothermic composition having an excess water value of 0.5 to 80.
The surplus water-containing exothermic composition of the present invention has surplus water for gathering the water necessary for heat generation and the solid components of the exothermic composition to allow for molding. In the case of producing various shapes and sizes of heating elements, a moldable excess water heating composition capable of forming a mold and forming various shapes and sizes of exothermic composition is indispensable.
The excess water is necessary for molding, but is unnecessary for heat generation because it works to control the heat generation. By measuring and defining the excess water value of the exothermic composition in the exothermic body by the method of the present invention, the exothermic element having excellent exothermic characteristics by selectively using the moldability and exothermic characteristics of the exothermic composition over time. Can be manufactured.
By using the surplus water-containing exothermic composition having an excess water value of 0.5 to 80, which has moldability according to the present invention, a variety of sizes and shapes of exothermic composition molded bodies can be molded. Single heating element, rectangular heating element, warm heating element, foot heating element, segment heating element, rigid heating element, stripe heating element, detachable heating element, expansion heating element, band heating element, tunnel ventilation heating element Manufactures various sizes and shapes of heating elements such as body, drug heating element, detachable tunnel ventilation heating element, detachable drug heating element, eye temperature heating element, face temperature heating element, outer temporary folding heating element with outer bag Can provide.
Furthermore, by using the moldability-containing surplus water exothermic composition having a surplus water value of 0.5 to 80 according to the present invention, and producing a heat generating element of various shapes and sizes, the excess water is removed from the heat generating element. Thus, it is possible to mass-produce heating elements having various shapes and sizes, which have improved heat generation characteristics. The surplus water value is a highly practical function value that can index the surplus water amount of the current exothermic composition regardless of the total water content of the exothermic composition.

The excess water exothermic composition of the present invention has a specified excess water value exceeding 0 by the method for defining the excess water value of the exothermic composition, and includes iron powder, a carbon component, a reaction accelerator, and water as essential components. And the rising temperature rising rate is 0 ° C./5 minutes or more, preferably 1 ° C./5 minutes or more, and is a surplus water exothermic composition having moldability, preferably JIS P3801 “Type 2” filter paper, More preferably, the exothermic composition has a retained particle size of 4 to 6 μm and a surplus water value of 0.5 to 80 defined by the method for defining surplus water value using a filter paper having a drainage time of 70 to 90 seconds / 100 ml. It is.
Hereinafter, the surplus water exothermic composition of the present invention is a JIS P3801 “Type 2” filter paper, preferably a filter paper having a retention particle diameter of 4 to 6 μm and a drainage time of 70 to 90 seconds / 100 ml. This is explained as an exothermic composition having a surplus water value of 0.5 to 80 defined by the regulation method.

  Excess water exothermic composition of the present invention includes, in addition to the above components, a molding aid, a functional substance, a water retention agent such as wood flour and vermiculite, a crosslinked poly (meth) acrylic acid and a crosslinked poly (meth) acrylamide. Water-absorbing polymers such as sodium sulfite, pH regulators such as slaked lime, aggregates such as fossil coral, nonions such as polyoxyethylene alkyl ethers, surfactants such as amphoteric ions, anions and cations , Hydrophobic polymer compounds such as polyethylene and polypropylene, organosilicon compounds such as dimethyl silicone oil, far-infrared emitting materials such as ceramics, negative ion generators such as tourmaline, pyroelectric materials, and heat generation aids such as ferrous chloride , Metals other than iron (including semiconductors) such as silicon and aluminum, metal oxides other than iron oxide such as manganese dioxide, hydrochloric acid and maleic acid At least one selected from acidic substances such as acetic acid, fibrous materials such as pulp and cotton, fertilizer components such as urea, moisturizers such as glycerin and hyaluronic acid, mold release agents or mixtures thereof You may contain. In addition, the component of the exothermic composition of this invention can select and use suitably any component of the exothermic composition conventionally disclosed or marketed or used for a well-known disposable body warmer and a heat generating body.

  In the out-of-mold compression of the present invention, the exothermic composition is separated from the mold and becomes a exothermic composition molded body, and then the exothermic composition molded body is compressed with a roll or the like. This is usually performed after the exothermic composition molded body is covered with a covering material and / or a covering material, but it may not be covered. There is no restriction on the pressure during pressurization. There is no restriction on the compression rate.

The moldability of the present invention is a function capable of maintaining the shape of the through-hole even after being housed in a mold having a through-hole and removing the mold. 25 and 26 are cross-sectional views illustrating the moldability.
25 (a) to 25 (d) are cross-sectional views illustrating moldability.
Explains the moldability of the exothermic composition 14 having moldability. Measurement is performed using a moldability measuring device 64. The measurement plate 3 is placed on the non-water-absorbing plastic film 11 provided on the support plate 8, and then the exothermic composition 14 is placed on the measurement plate 3, and the measurement plate is further moved by the magnet 65 and the filling plate 9. 3 after filling the cylindrical through-hole 4 and removing the magnet 65, the exothermic composition 14 having the moldability has a moldability even if the measuring plate 3 is removed. The shape of the through hole 4 is maintained.
FIGS. 26A to 26D are cross-sectional views illustrating non-moldability.
The non-molding property of the exothermic composition 14 having no moldability is described. Although the same operation as FIG. 25 is performed, since the non-molding exothermic composition 14 does not have moldability, the shape of the cylindrical through-hole 4 cannot be maintained after the measurement plate 3 is removed. It has collapsed in all directions.

The rising temperature rising rate of the present invention is the difference (Te−Ts) between the temperature (Ts) at the start of heat generation and the temperature (Te) after 5 minutes of heat generation in the method of measuring the rising temperature rising rate.
The rising temperature rising rate of the excess water exothermic composition is 0 ° C./5 minutes or more, preferably 1 ° C./5 minutes or more, more preferably 2 ° C./5 minutes or more, and further preferably 3 ° C / 5 min or more, more preferably 4 ° C / 5 min or more, further preferably 5 ° C / 5 min or more, more preferably 6 ° C / 5 min or more, and further preferably 7 ° C / min. It is 5 minutes or more, more preferably 8 ° C / 5 minutes or more, further preferably 9 ° C / 5 minutes or more, and further preferably 10 ° C / 5 minutes or more.

  The surplus water value of the surplus water-containing exothermic composition exceeds 0, preferably 0.5 to 80, more preferably 1 to 80, still more preferably 2.5 to 80, and further Preferably it is 5-80, More preferably, it is 5-70, More preferably, it is 5-65, More preferably, it is 5-60, More preferably, it is 10-60, More preferably, it is 10-55 More preferably, it is 10-50, More preferably, it is 10-40, More preferably, it is 10-35, More preferably, it is 10-30.

  The surplus water exothermic composition includes an oxidized exothermic composition, an activated iron powder having binding oxygen such as iron oxide at least partially on the surface, and an active iron powder having a carbon component. Things can also be used.

Although there is no restriction | limiting of the particle size of the water-insoluble solid component of the exothermic composition of this invention, Preferably it is 900 micrometers or less, More preferably, it is 300 micrometers or less. The smaller the particle size, the better. In particular, it is preferable to use a 0.1-300-micrometer thing. In addition, iron powder having a particle size of 120 to 300 μm, preferably 150 to 300 μm is preferable for long-term heat generation, and 5 to 40 μm, preferably 10 to 32 μm is preferable for immediate heat generation.
The moldability and shape retention of the exothermic composition are improved as the particle size of the water-insoluble solid component excluding the reaction accelerator, the water-soluble substance and water is smaller.
The particle size is measured by the maximum length in a form in which the portion passing through the sieve is indicated in μm units from the sieve opening (diameter of the sieve) or the like, by the dynamic light scattering method, the laser diffraction method, or the like. Mean particle size.

The mixing ratio of the exothermic composition of the present invention is not particularly limited, but the carbon component is 0.01 to 50 parts by weight and the reaction accelerator is 0.01 to 50 parts by weight with respect to 100 parts by weight of the iron powder. The mixing ratio is preferably selected so that the water content is 0.5 to 60 parts by weight.
Further preferably, the following composition may be added to the exothermic composition at the following blending ratio with respect to the iron powder.
That is, with respect to 100 parts by weight of iron powder, water retaining agent 0.01-20 parts by weight, water-absorbing polymer 0.01-20 parts by weight, pH adjuster 0.01-5 parts by weight, hydrogen generation inhibitor 0.01 ~ 12 parts by weight, metals other than iron 1.0-50 parts by weight, metal oxides other than iron oxide 1.0-50 parts by weight, surfactant 0.01-5 parts by weight, hydrophobic polymer compound, bone Materials, fibrous materials, functional materials, organosilicon compounds and pyroelectric materials are each 0.01 to 10 parts by weight, moisturizers, fertilizer components and exothermic assistants are each 0.01 to 10 parts by weight, acidic substances 01 to 1 part by weight is preferred. In addition, you may make it mix | blend a magnetic body further and should just determine a mixing | blending ratio suitably as needed. This blending ratio can also be applied to the reaction mixture. Moreover, when manufacturing the exothermic composition which contains the iron component which has an oxide film by partially oxidizing a reaction mixture, the excess water value of a reaction mixture is less than one. Moreover, you may make it mix | blend a magnetic body further and should just determine a mixing | blending ratio suitably as needed.

The iron powder is not limited as long as it contains 50% by weight or more of iron, but examples include cast iron powder, atomized iron powder, electrolytic iron powder, reduced iron powder, sponge iron powder, and iron alloy powder thereof. Can be used as Furthermore, these iron powders may contain carbon or oxygen, or may contain other metals by iron containing 50% by weight or more of iron. The type of metal contained as an alloy or the like is not particularly limited as long as the iron component acts as a component of the exothermic composition, but examples include metals such as aluminum, manganese, copper, and silicon, and semiconductors. The metal of the present invention includes a semiconductor. Examples of the iron powder having a fibrous form and other metals include steel fibers, aluminum fibers, and magnesium fibers.
In the iron powder of the present invention, the content of metals other than iron is usually 0.01 to 50% by weight, preferably 0.1 to 40% by weight, more preferably 0, based on the whole iron powder. .1 to 10% by weight.

As the iron powder having an oxygen-containing film on at least a part of the iron surface,
A. An active iron powder in which an essential component of an exothermic composition or an acidic substance or other necessary component added thereto is contact-treated with an oxidizing gas, the iron component is partially oxidized, and the surface of the iron component is at least partially oxidized,
B. An active iron powder having a wustite content of 2 to 50% by weight as an X-ray peak intensity ratio of iron,
C. Iron powder having an iron oxide film with a thickness of 3 nm or more on the surface,
D. Non-water-absorbing base material made of exothermic composition formed by molding a surplus water exothermic composition containing iron powder, carbon component, reaction accelerator and water as essential components and surplus water value of 0.5-80 And a heating element sandwiched between non-water-absorbing coating materials, the water vapor permeability is 0.1 to 6.0 g / (m ² · day), and the oxygen permeability is 0.05 to 10 ml / (m ² · day). After being enclosed in an outer bag made of packaging material, it is held in a kind of controlled environment selected from a natural environment that is not damaged and a holding temperature of 1 to 80 ° C. and a holding humidity of 1 to 90%. Iron powder in which at least a part of the iron component in the exothermic composition is converted to have an iron oxide on at least a part of the surface by setting the retained holding time to at least 25 hours to 2 years ,
E. A mixture of active iron powder and iron powder other than active iron powder,
Etc. are mentioned as an example.

The thickness of the iron oxide film which is an oxygen-containing film covering the surface of the iron powder is usually 3 nm or more, preferably 3 nm to 100 μm, more preferably 20 nm to 100 μm, using Auger electron spectroscopy. More preferably, the thickness is 30 nm to 100 μm, more preferably 30 nm to 50 μm, still more preferably 30 nm to 1 μm, still more preferably 30 nm to 500 nm, and still more preferably 50 nm to 300 nm. By making the thickness of the iron-containing film of iron 3 nm or more, the thickness of the iron-containing film of iron can exert an effect of promoting the oxidation reaction, and immediately contact the oxidizing gas such as air to cause the oxidation reaction immediately. Can be started. If the thickness of the iron oxygen-containing coating is 100 μm or more, the heat generation time may be shortened, but it can be used depending on the application.
The other is active iron powder having wustite, and the amount of wustite is usually 2 to 50% by weight, preferably 5.01 to 50% by weight, as an X-ray intensity ratio with iron. Preferably it is 5.01 to 40 weight%, More preferably, it is 6 to 40 weight%, More preferably, it is 7 to 30 weight%, More preferably, it is 7 to 25 weight%. Even if it exceeds 50% by weight, the heat build-up is good, but the heat generation duration is shortened. When it is less than 2% by weight, the heat build-up becomes dull.
The amount of wustite was evaluated using an X-ray analyzer as a ratio of the integrated intensity of the peak of wustite 220 to the integrated intensity of the peak of 110 face of iron.

  The carbon component is not limited as long as it is a carbonaceous material. Examples include activated carbon (coconut shell charcoal, charcoal powder, calendar bituminous coal, peat, lignite), carbon black, acetylene black, graphite, carbon nanotube, carbon nanohorn, and the like. Moreover, the thing of fibrous forms, such as activated carbon fiber, can also be used.

  The reaction accelerator is not limited as long as it can accelerate the exothermic reaction. Examples include inorganic electrolytes such as sodium chloride, potassium chloride, and calcium chloride. The electrolyte currently used for the well-known disposable warmer and a heat generating body can also be used. These reaction accelerators are not subject to the particle size.

  The water-absorbing polymer is not particularly limited as long as it has a crosslinked structure and has a water absorption ratio of 3 times or more with respect to its own weight. Moreover, what cross-linked the surface may be used. Conventionally known water-absorbing polymers and commercially available products can also be used. As the water-absorbing polymer, a crosslinked poly (meth) acrylic acid, a crosslinked poly (meth) acrylate, a crosslinked poly (meth) acrylate having a polyoxyalkylene group, a poly N-vinylcarboxylic acid amide-based crosslinked Examples include a crosslinked body, a polyvinyl alcohol-based crosslinked body, and a crosslinked poly (meth) acrylamide. These may be used alone or in combination of two or more.

  The molding aid, in combination with moisture, improves the strength of the water film, strengthens the aggregation between the composition material particles of the exothermic composition such as iron powder, improves the strength of the exothermic composition molded body, There is no limitation as long as the maintenance of this can be strengthened, but there are water-soluble polymers, hydrophilic polymers, inorganic compounds, and the like. Cellulose-based, starch-based, poly (meth) acrylic acid (salt, ester) -based, syrup-based, seaweed, plant mucilage, microbial mucilage, protein-based, polysaccharide-based, organic-based, inorganic-based, synthetic system, etc. Examples of the polymer molding aids are as follows. For example, cellulose derivative-based molding aids such as carboxymethylcellulose (CMC), sodium carboxymethylcellulose, ethyl acetate, hydroxymethylcellulose, starch-based water absorbents such as dextrin, pregelatinized starch, and starch for processing, and polyacrylic such as sodium polyacrylate Syrups such as acid salts, corn syrup, and mannit syrup, seaweed extracts such as carrageenan and agar, plant resin mucous substances such as gum arabic, trant gum, caraya gum, and mucous substances produced by microorganisms such as xanthan gum, jiylang gum, bull run, and guardland Animal thickeners such as gelatin, albumin and casein, plant proteins such as soybean protein and wheat protein, polysaccharide thickeners such as plant fruit mucilage such as pectin and arapinogalactan, locust peanut gum, tamarin Plant seed mucous substances such as seed gum and tara gum, alginates such as sodium alginate, gum arabic, tragacanth gum, locust pea gum, guar gum, gum arabic, pectin, corn starch, etc., bentonite, montmorillonite, kaolin, sodium silicate, aluminum silicate Inorganic materials such as stearates, polyethylene oxide, polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl acetate emulsion, acrylic sulfonic acid polymers, poly N-vinylacetamide, or methylcellulose, hydroxypropylmethylcellulose, hydroxypropylcellulose, carmellose Sodium, carboxyvinyl polymer, maleic anhydride copolymer such as ethylene-maleic anhydride copolymer, acrylic acid-starch copolymer Coalescence, microcrystalline cellulose, alone N- vinylacetamide copolymer, or a combination of two or more, and the like as an example. Conventionally known water-soluble polymers and thickeners can also be used.

  The content of the molding aid is not limited as long as the heat generation performance is not significantly lowered, but is preferably 0.001 to 2 parts by weight, more preferably 0.001 to 100 parts by weight with respect to 100 parts by weight of the iron powder. 1.5 parts by weight, more preferably 0.001 to 1 part by weight, still more preferably 0.01 to 1 part by weight, still more preferably 0.01 to 0.5 part by weight, Preferably it is 0.01-0.2 weight part, More preferably, it is 0.01-0.1 weight part, More preferably, it is 0.01-0.099 weight part, More preferably, it is 0.01 It is -0.095 weight part, More preferably, it is 0.02-0.095 weight part, More preferably, it is 0.05-0.090 weight part.

The functional substance may be any substance as long as it has some function such as medicinal effect and aroma. Perfumes, herbs, herbs, Chinese medicines such as Kakkonto, oils such as safflower oil, dried plants such as mugwort and loquat leaves and mogusa, transdermal drugs, pharmaceutically active substances, fragrances, lotions, emulsions, Examples include poultices, fungicides, antibacterial agents, bactericides, deodorants or deodorizers, magnetic materials, and the like.
Furthermore, specific examples of functional substances include catechin, acidic mucopolysaccharide, chamomile, horse chestnut, vitamin E, nicotinic acid derivatives, blood circulation promoters such as alkaloid compounds; horse chestnut, flavone derivatives, anthocyanidins , Vitamin P, Kinsenka, Silanol, Terminaria, Mayus, etc., swelling improver; aminophylline, tea extract, caffeine, xanthene derivative, inosit, dextran sulfate derivative, horse chestnut, escin, anthocyanidin, organic iodine compound, hypericum grass, horsetail , Slimming agents such as mannenrou, ginseng, hyanoreuronidase; analgesics such as indomethacin, camphor, ketoprofen, shoga extract, pepper extract, methyl salicylate, glycolic salicylate; Fragrances such as dander, rosemary, citron, juniper, menthol, nutmeg, turpentine oil, cedar embryo oil, hinokitiol oil, peppermint, eucalyptus, rosewood, orange, and moisturizers such as hyaluronic acid and glycerin. Can be used.

  The percutaneously absorbable drug is not particularly limited as long as it is percutaneously absorbable. For example, skin stimulants, analgesic anti-inflammatory agents such as salicylic acid and indomethacin, central nervous system agents (sleep sedatives, Antiepileptics, neuropsychiatric agents), diuretics, antihypertensives, lotus vasodilators, antitussives, antihistamines, arrhythmic agents, cardiotonic agents, corticosteroids, local anesthetics, and the like. These drugs are used alone or in combination of two or more as required.

  The base material and the covering material of the covering material of the present invention have a substantially planar surface.

In the present invention, the substantially planar surface means a storage pocket, storage compartment, storage area, cover pocket, cover compartment, cover area, which are previously provided for storing or covering the exothermic composition molded body, A flat surface that does not have a concave or convex portion for storage, such as a corrugated cover.
The pocket is a storage pocket provided in advance in the packaging material for storing the entire exothermic composition, and is a pocket described in JP-T-2001-507593.
The storage compartment is a storage compartment provided in the packaging material in advance to store the entire exothermic composition, as described in Japanese Patent No. 316160 and Japanese Patent Publication No. 11-508314. It is a storage compartment.
Accordingly, there may be irregularities shallower than the height of the exothermic composition molded body, irregularities that cannot accommodate the entire exothermic composition molded body, or irregularities that are not intended to contain or cover the exothermic composition molded body intentionally. . Even if such unevenness is present in the base material or the covering material, the substantially flat base material or the substantially flat covering material is used.

The packaging material constituting the base material, covering material, covering material, local ventilation material and support of the present invention is not limited as long as it functions as a packaging material for a heating element. The packaging material may have a single-layer structure or a multilayer structure, and the structure is not limited.
Breathable packaging materials, non-breathable packaging materials, breathable packaging materials, non-breathable packaging materials, water-absorbing packaging materials, non-water-absorbing packaging materials, extensible packaging materials, stretchable packaging materials, polyurethane foam, polystyrene foam, etc. Examples thereof include a foam packaging material, a heat-sealable packaging material having a heat seal layer, and the like, and can be appropriately used depending on a desired application in a desired form of a film, a sheet, a nonwoven fabric, a woven fabric, and the like and a composite thereof. Examples thereof include films, nonwoven fabrics, woven fabrics, sheets and the like, or combinations thereof. Specific examples include polyolefins such as polyethylene and polypropylene, polyesters, polyamides, polyurethanes, polystyrenes, thermoplastic resins and synthetic resins such as polyethylene-vinyl acetate copolymers, papers, natural rubber, recycled rubber, synthetic rubber, Examples include films, sheets, non-woven fabrics, woven fabrics, foams, non-water-absorbing papers that have been non-water-absorbing treated with wax, oil, and the like, and composites thereof. . Any packaging material disclosed or commercially available or used for known disposable warmers or heating elements can be appropriately selected and used.

The surface in contact with the skin including the base material, the covering material, and the support of the present invention preferably has a good texture and is composed of a flexible material.
Materials constituting the surface include polyolefins such as polyethylene and polypropylene, polyesters, polyamides, polyurethanes, polystyrenes, polyethylene-vinyl acetate copolymers, synthetic resins such as polyethylene terephthalate, plant fibers such as cotton and hemp, wool, silk Examples include animal fibers such as rayon, recycled fiber such as rayon and cupra, non-woven fabrics and fibers using semi-synthetic fibers such as acetate, textile materials such as Japanese paper, western paper, synthetic paper, cloth, woolen fabric, leather materials, etc. . These can be used alone or in a stack of a plurality. Further, after encapsulating the exothermic composition molded body with the base material and the covering material, the second base material and the second covering material having a good texture may be further coated thereon.

  Usually, the base material is made of a non-breathable packaging material, and the covering material is made of a breathable packaging material. The exothermic composition or the packaging material on which the exothermic composition molded body is laminated is the base material, and the exothermic composition molded body. The packaging material to be covered is a coating material, and it does not matter whether air permeability is present or not. As the heating element, at least a part of the heating element only needs to have air permeability. The breathability of the housing constituting the heating element can be obtained by using a breathable packaging material on one or both sides of the bag.

The air permeability of the air permeable packaging material, the heat generating part, and the section heat generating part is a water vapor transmission rate by the Lissy method (JIS K-7129A method), preferably 50 to 10,000 g / (m ² · day), more preferably. Is 100 to 5,000 g / (m ² · day), more preferably 100 to 2,000 g / (m ² · day), and still more preferably 100 to 1,000 g / (m ² · day). Yes, more preferably 100 to 600 g / (m ² · day), and still more preferably 150 to 500 g / (m ² · day).
If the moisture permeability is less than 50 g / (m ² · day), the amount of heat generation is reduced, and a sufficient heating effect cannot be obtained. Exceeding ² · day) is not preferable because the heat generation temperature becomes high and a safety problem may occur. However, depending on the application, it is not limited to use at a moisture permeability exceeding 10,000 g / (m ² · day) or in some cases close to an open system.

The non-breathable packaging material is not limited as long as it is a non-breathable packaging material, but the moisture permeability is preferably 10 g / (m ² · day) or less, more preferably 0.1 to 10 g. / a ^(m 2 · day), more preferably from ^{0.1~6g / (m 2 · day)} .

Although there is no restriction | limiting in the layer structure of the said base material and coating | covering material, It is preferable to have a four-layer structure from a single layer structure.
The base material is a non-woven film / porous film two-layer structure, a non-breathable film / non-woven cloth two-layer structure, a non-breathable film / adhesive layer / separator three-layer structure, a non-breathable film / non-woven cloth / adhesive layer For example, a four-layer structure of / separator and a four-layer structure of separator / breathable pressure-sensitive adhesive layer / nonwoven fabric / porous film may be mentioned.
Examples of the covering material include a two-layer structure of nonwoven fabric / porous film, a two-layer structure of nonwoven fabric / perforated film, and a four-layer structure of separator / breathable pressure-sensitive adhesive layer / nonwoven fabric / porous film. Also useful are composite nonwoven fabrics that are laminates of spunbond nonwoven fabrics, meltblown nonwoven fabrics, spunbond nonwoven fabrics / meltblown nonwoven fabrics / spunbond nonwoven fabrics.
The base material is a packaging material on which the exothermic composition molded body is laminated, and the covering material is a packaging material that covers the exothermic composition molded body. In the base material or the covering material, air permeability and non-air permeability can be arbitrarily selected.

The breathable packaging material is not limited as long as it has breathability.
For example, perforated films, nonwoven fabrics, woven fabrics, papers and laminates containing them, which are made by providing fine pores by perforation with a needle or the like in a non-breathable film such as a porous film or polyethylene film, polyethylene in the nonwoven fabric Non-breathable packaging material laminated with a film, which has fine holes using needles, etc. to make it breathable, non-woven fabric, porous film that has been laminated and thermo-compressed to control breathability, porous film Alternatively, a film or sheet such as a laminate in which a nonwoven fabric is laminated on a porous film via a breathable pressure-sensitive adhesive layer or a breathable adhesive layer is an example.
The breathable material may be only one layer, but by using a plurality of layers, it is possible to provide effects such as imparting a concealing property of the color of the heating element and preventing surface precipitation of the fallen powder.

  The porous film is not limited, but is a polyolefin resin such as polyethylene, linear low-density polyethylene or polypropylene, a fluorine resin such as polytetrafluoroethylene, and an inorganic material such as calcium sulfate, barium sulfate, or titanium oxide. A porous film provided with micropores by interfacial peeling of a mixed sheet with a filler can be selected as appropriate.

  Examples of the nonwoven fabric include, but are not limited to, thermoplastic resins such as rayon, nylon (polyamide), polyester, acrylic, polypropylene, vinylon, polyethylene, polyurethane, and cupra, cotton, cellulose, synthetic pulp, wood pulp, non-wood pulp, Examples include semi-synthetic fibers such as rayon and acetate, dry nonwoven fabrics, wet nonwoven fabrics, spunbonds and spunlaces formed from vinylon fibers and polyester fibers. The nonwoven fabric which consists of composite fiber of a core sheath structure may be sufficient. The nonwoven fabric on the surface in contact with the skin is preferably a brushed (fluffed) nonwoven fabric. Moreover, a stretchable nonwoven fabric and a non-stretchable nonwoven fabric can also be used.

  The non-breathable packaging material is not limited as long as it is non-breathable. Polyethylene, polypropylene, nylon, vinyl chloride, vinylidene chloride, acrylic, polyester, polyvinyl alcohol, ethylene-vinyl acetate copolymer and other films, sheets, coatings and laminates thereof, and metals such as aluminum Examples thereof include a laminate of metal (including semiconductor) compounds such as silicon oxide and a composite packaging material using them. Examples of the metal compound containing a semiconductor include silicon oxide layers, oxides such as aluminum oxide, silicon oxynitride, and silicon nitride, nitrides, and oxynitrides.

The core material is not limited as long as it functions as a core material, but a film or sheet made of a polymer such as polyethylene, polypropylene, nylon, acrylic, polyester, polyvinyl alcohol, ethylene-vinyl acetate copolymer, crepe paper, craft, etc. Examples include thin paper, corrugated liner paper, corrugated core, paper such as thick paper such as a coat pole, rubbers, or one or two or more laminates thereof, and composite materials using these.
The installation method is not limited and may be used alone, but rubber that serves as an anti-slip layer and a core material may be used, or the same material as that of the base material or the covering material may be used. In addition, what is necessary is just to select rigidity suitably with the site | part of the applied foot.

  The paper is not particularly limited as long as it is water-absorbing paper. For example, tissue paper, crepe paper, thin paper such as craft, liner paper, cardboard core, thick paper such as a coat pole, or 1 type, or 2 or more types of these laminated bodies are mentioned. When the paper is used as a non-water-absorbing packaging material, if a non-water-absorbing paper is used by making it non-water-absorbing by a laminate with a non-water-absorbing plastic film, impregnation or coating with wax or oil, etc. Good.

  Examples of the stretchable packaging material include films, sheets, nonwoven fabrics, woven fabrics, or laminates thereof that extend 1.005 times or more of the original length without being damaged when tension is applied. It does not matter whether this tension is removed or not. Extensibility also includes stretchability. Textiles, films, spandex yarns, yarns, strings, natural rubber, synthetic rubber, elastomers, stretchable shape memory polymers, etc., mixed products of these and non-stretchable materials, mixed papers, and combinations thereof Examples include flat plates, strands, ribbons, tapes, slit films, scrim structure elastic bodies, foams, non-woven fabrics, or composite stretchable materials by laminating them or non-extensible or non-stretchable materials. As mentioned. Moreover, the packaging material which provided the alternate cut | notch is also mentioned as an example of an elastic packaging material.

  Moreover, the said packaging materials, such as an extensible packaging material and a stretchable packaging material, are described as a packaging material which comprises the band of Unexamined-Japanese-Patent No. 2002-54012, and this specification is referred by referring all the said gazettes. Incorporate

  With the local ventilation material of the present invention, a space is formed in at least a part of the peripheral edge of the divided heat generating part by covering the heat generating part with the local ventilation material using the difference in height between the divided heat generating part and the dividing part. And it is a packaging material which provides an air pocket at least in part of the peripheral part of a division | segmentation heat_generation | fever part. By providing the air reservoir between the divided heat generating portions, the air permeability between the outside and the divided heat generating portions is adjusted, and a heat retaining effect is also provided. In addition, the divided heat generating parts that are the heat generation sources are provided on the support at intervals, covering the heat generating parts with different heights, adjusting the air permeability of the divided heat generating parts, and the divided heat generating parts that are the scattered heat sources. The surface heat generation in the practical range can also be realized using. Non-breathable packaging material and breathable packaging material can be used for the local ventilation material. The local ventilation material and the support can be the packaging material used for the base material and the covering material, and have been conventionally disclosed or commercially available or used for known disposable warmers and heating elements. Any packaging material can be appropriately selected and used.

  The method for fixing the local ventilation material to the heat generating part and / or the heating element, the fixing agent such as an adhesive, the shape, and the state are not limited as long as an air pocket can be provided between at least some of the divided heat generating parts. .

The local ventilation material is not limited as long as the ventilation of the heat generating part can be adjusted. It is preferable that the heat generation part provided with the local ventilation material or the air permeability of the heat generating body is lower than the air permeability.
Breathable materials such as porous films, non-woven fabrics, films and sheets having holes by perforation, and composites such as laminates including at least one of them as part of constituent members, non-breathable films, sheets and laminates containing them Useful is a perforated film, a perforated film, perforated sheets or perforated laminates containing them. Also, in the local area of the local ventilation material, a region (ventilation hole) having a larger air permeability than the ventilation surface (ventilation hole) of the heating element body is provided in the local region of the local ventilation material so as to increase the local air permeability. The region may be substantially non-breathable, or may be kept less breathable than the breathability of the vent surface of the segmented heat generating portion to control the flow path and flow of gas such as air. Thereby, the heat insulation of a division | segmentation heat-emitting part and appropriate temperature maintenance can be performed.

  The packaging material constituting the local ventilation material is a base material, a coating material, a packaging material used for an outer bag, a heating element or a chemical warmer (breathable container (inner bag)) conventionally used. Or a packaging material used for a non-breathable container (outer bag) can be used and may be selected as appropriate.

  The ventilation blocking sheet covers at least the breathable portion of the local ventilation material, and is not particularly limited as long as it is non-breathable. The outer bag packaging material, the local ventilation material packaging material, or the disclosed or publicly known Non-breathable packaging materials such as non-breathable films and sheets used for chemical warmers and heating elements can be used. The film or sheet is adhered and adhered to the container in a peelable state by means such as an adhesive, but it is preferable to provide a handle (knob portion) so that it can be easily peeled off during use.

In this way, the ventilation block sheet is detachably bonded to the ventilation surface of the breathable local ventilation material, so that air (oxygen) enters the inside of the divided heat generating portion from the ventilation surface during storage and transportation. This prevents heat generation during storage and transportation.
On the other hand, since air permeability can be ensured by peeling the ventilation block sheet from the local ventilation material during use, heat can be generated by normal use. Therefore, it becomes possible to ship without individually packaging each heating element as in the past, and several heating elements can be packaged together in one packaging bag, so-called outer bag can be omitted. . In other words, even if one of them is used when packaged together, it can be stored as if each heating element was individually packaged, and without being concerned about its storage condition such as sealing after opening. Can be used.

Of the heating elements of the present invention, it is preferable to provide a texture material for the heating elements that value the texture. An eye temperature heating element, a face temperature heating element, and the like can be given as examples. It is preferable to provide at least the side in contact with the skin or the like.
The texture material of the present invention is not limited as long as the texture is good, and the transparency and breathability are not questioned. In consideration of 1) good texture, 2) high strength, 3) prevention of powder leakage from the heat generating part, etc., it may be appropriately selected from various packaging materials according to the application.
The texture material of the present invention may be incorporated into a base material or a coating material. Non-woven fabrics such as thermal bond nonwoven fabric (texture), air-through nonwoven fabric (texture) / two-layer laminate of polyethylene porous film, spunbond nonwoven fabric (strength) / melt blown nonwoven fabric (venting, leak prevention) / thermal bond nonwoven fabric (texture) Examples include various nonwoven fabrics such as a nonwoven fabric laminate such as a three-layer laminate.
When air permeability and moisture permeability are controlled in the base material and the covering material, it is preferable that the air permeability and moisture permeability of the texture material are high. For example, a texture material having a moisture permeability exceeding 5000 g / (m ² · 24 hr). The air-through nonwoven fabric uses a core-sheath type composite fiber having polyethylene terephthalate as a core and polyethylene as a sheath. The thermal bond nonwoven fabric uses a core-sheath type composite fiber having polyethylene terephthalate as a core and polyethylene as a sheath. The melt blown nonwoven fabric and the spunbond nonwoven fabric are made of polypropylene.

The heat seal material constituting the heat seal layer may be a single material or a composite material having a heat seal layer, and is not limited as long as at least a part thereof can be joined by heating.
For example, polyolefins such as polyethylene and polypropylene, olefin copolymer resins, ethylene-vinyl acetate copolymer resins, ethylene-acrylic acid ester copolymer resins such as ethylene-isobutyl acrylate copolymer resins, ethylene-based hot melt resins, Examples thereof include thermoplastic resins such as polyamide hot melt resins, butyral hot melt resins, and polyester hot melt resins, and films and sheets thereof. Moreover, what mix | blended various additives, such as antioxidant, can also be used for hot-melt-type resin and its film and sheet | seat. In particular, low density polyethylene and polyethylene using a metallocene catalyst are useful.

  The breathable packaging material can be used on a part, one side or both sides of the heating element.

  In the present invention, a pressure-sensitive adhesive is used before heat-sealing the base material and the covering material, and preferably, the base material and the covering material are temporarily attached using a breathable pressure-sensitive adhesive layer made of an adhesive. After forming, heat sealing may be performed. The heat seal part has at least a part of an area composed of an adhesive and a heat seal material constituting the temporary attachment part. There is no wrinkle, no seal breakage, and reliable heat sealing can be achieved. Thereby, the speed of heat sealing can be increased.

The heating element of the present invention is
Iron powder, carbon component, reaction accelerator, water as essential components, surplus water value is 0.5-80, and rising temperature rise rate is 0 ° C / 5 min or more, and has surplus moldability A heat generating composition molded body obtained by molding a water heat generating composition is provided between the packaging materials, the packaging material at the peripheral edge of the heat generating composition molded body is sealed, and at least a part of the heat generating body has air permeability,
The heating element is at least one selected from a single heating part heating element, a rectangular heating element, a warm heating element, and a foot heating element, and each heating element is at least partially breathable and includes the water content An exothermic composition in which the exothermic composition contains iron powder, a carbon component, a reaction accelerator, and water as essential components, the excess water value is 0.5 to 80, and the rising temperature rise rate is 0 ° C./5 minutes or more. Yes,
An exothermic composition molded body obtained by molding an excess water exothermic composition having moldability and having an excess water value of 0.5 to 80 with iron powder, a carbon component, a reaction accelerator and water as essential components The packaging material at the peripheral edge of the exothermic composition molded body is sealed, at least a part is breathable, has no intermittent cuts, has a full foot shape, and has minimal stiffness and softness. A foot temperature heating element with a degree of 200 mm or more,
An exothermic composition molded body obtained by molding an excess water exothermic composition having moldability, having an excess water value of 0.5 to 80, with iron powder, a carbon component, a reaction accelerator, and water as essential components The divided heat generating region and the divided portion are integrated, and at least a part is provided with a breathable storage body. The divided heat generating portion is a divided heat generating portion region in which the water-containing heat generating composition is stored, and the heat generating composition is not stored. The division part which is an area is integrated, a plurality of division heat generating parts are provided at intervals with the division part as an interval, and at least a part has air permeability, and the divided heat generation part area and the division part of the storage body A heating element having at least one loop stiffness across the length of 700 mN / cm or less, and having flexibility based on structural and articulation flexibility functions;
At least one loop stiffness in the longitudinal direction across the section heating section and section of the container is 700 mN / cm or less, and the maximum tensile strength at 25 ° C. of at least one section is 20 g / mm width or more. The elongation at break at 25 ° C. is 5% or more, and is a heating element having flexibility based on the structural flexible function and the joint flexible function,
A heating element in which at least one loop stiffness in a longitudinal direction crossing the section heating section region and the section of the storage body is 700 mN / cm or less and the loop stiffness of at least one section is 700 mN / cm or less;
Heat generation in which at least one loop stiffness in the longitudinal direction crossing the divided heat generating portion region and the divided portion of the storage body is 700 mN / cm or less, and intermittent cuts are provided in at least a partial region of the divided portion. Body,
At least one loop stiffness in the longitudinal direction crossing the divided heat generating region and the divided portion of the storage body is 700 mN / cm or less, and at least a part of each of the divided heat generating portions is covered with a local ventilation material, and the ventilation of the divided heat generating portion A heating element that has a space surrounded by the side, the partitioning part, and the local ventilation material, and is ventilated from the side ventilation part facing at least the space part of the heating part to the heating composition,
At least one loop stiffness in the longitudinal direction crossing the section heating section region and the section of the storage body is 700 mN / cm or less, the minimum bending resistance of the heating element is 70 mm or less, and the minimum bending resistance change is −95 to A heating element having a flexibility based on a structural flexible function and an articulated flexible function,
A heating element having at least one loop stiffness of 700 mN / cm or less in the longitudinal direction crossing the section heating section region and the section of the storage body constituting the heating element after the end of heat generation;
A heating element having the above-mentioned surplus water heating composition is a segment heating part heating element, a rigid and soft heating element, a stripe heating element, a detachable heating element, a stretchable heating element, a band heating element, a tunnel ventilation heating element, a drug heating element, Separable tunnel ventilation heating element, separable drug heating element, eye temperature heating element, face temperature heating element, outer temporary folding heating element with outer bag, and the excess water heating composition is iron powder A carbon component, a reaction accelerator and water as essential components, and an excess water value of 0.5 to 80, and at least one of the longitudinal direction crossing the section heating section region and the section section of the storage body constituting the heating body The loop stiffness is 700 mN / cm or less, the maximum tensile strength at 25 ° C. of the at least one section is 20 g / mm width or more, the breaking elongation at 25 ° C. is 5% or more, and heat generation Minimum bending resistance is not more 70mm or less, the minimum bending resistance difference is the heating element is not more than 0 mm.

That is, the heating element of the present invention has iron powder, a carbon component, a reaction accelerator and water as essential components, an excess water value of 0.5 to 80, and a rising temperature rising rate of 0 ° C./5 minutes or more. More preferably 1 ° C./5 minutes or more, and a heating composition molded body obtained by molding a surplus water heating composition having moldability between the packaging materials, and a peripheral portion of the heating composition molded body The packaging material is sealed and at least a part of the heating element has air permeability, and is composed of a single heating element heating element and a segment heating element heating element.
The exothermic composition molded body of the present invention includes an exothermic composition compressed body in which the exothermic composition is compressed. A breathable pressure-sensitive adhesive layer may be provided between the substrate or the exothermic composition molded body and the covering material.
As the local ventilation material and the support, the base material and the covering material of the covering material can be used. At least a part of the heating element has air permeability. It is preferable to provide a fixing means on at least a part of the exposed portion of the heating element.

  Examples of the heating element of the present invention include a single heating element heating element and a segment heating element heating element. Although the outer shape of the heating element of the present invention is not limited, it is rectangular, square, broad-blade, eye mask, bowl, bowl, rounded rectangle, rounded square, egg, boomerang, maggot, Examples include star shapes, wing shapes, nose shapes, lantern shapes, and foot shapes. The airfoil is suitable around the neck and shoulders. The angle of the outer shape of the heating element may be formed in a substantially arc shape.

  The single heating part heating element of the present invention is a heating element in which the heating part is formed of one heating part, and at least a part of the heating element has air permeability. The shape of the heat generating part and the heat generating element is not limited, and the shape of the heat generating element and the shape of the heat generating part are not necessarily the same. Further, the heating element and / or the heating part may be provided with corners in a substantially arc shape (R shape), and the corners may be curved or curved. Examples of the heating element include a rectangular heating element, a warm pad heating element, and a foot temperature heating element.

  The rectangular heating element of the present invention is a heating element having a rectangular heating element and heating element. Rectangular and square shapes are examples.

  The hot-spring heating element of the present invention is a small heating element having various shapes such as a circle, a rectangle, and an ellipse and having a size of 50 mm or less x 50 mm or less. Suitable for heating the body's vases.

The foot temperature heating element of the present invention includes a foot temperature heating element consisting of a single heating part heating element and a foot temperature heating element consisting of a segment heating part heating element, and the heat generated in a shape covering any part of the foot Any body is acceptable. For example, a shape that covers a part of the back side of the foot, a shape that covers the entire back side of the foot (full foot shape), a shape that covers a part of the back side of the foot, a shape that covers the entire back side of the foot, A shape that covers part or all of the instep side and part or all of the side of the foot, or part or all of the back side of the foot, part or all of the side of the foot, and the instep side of the foot An example of the heating element is a shape that covers a part or all of the heating element. Moreover, a recessed part etc. may exist in the center part etc. of a heat generating body.
The minimum bending resistance of the all-foot-shaped foot temperature heating element of the present invention is 200 mm or more, preferably 230 mm or more, more preferably 250 mm or more, further preferably 270 mm or more, and further preferably 300 mm or more. More preferably, it is 350 mm or more, More preferably, it is 400 mm or more, More preferably, it is 500 mm or more, More preferably, it is 600 mm or more.

The segment heating part heating element of the present invention is a segment heating part and a seal region having a surplus water heating composition containing excess water of 0.5 to 80 or a heating composition molded body that is a molded body thereof, There are two or more, preferably three or more, more preferably four or more, and still more preferably five or more, divided heat generating parts provided with a certain separation part, with a separation part as an interval. And at least one loop stiffness in the longitudinal direction crossing the section heating section region and the section of the storage body of the heating element is 700 mN / cm or less, and has a structural flexible function and an articulated flexible function. A heating element having a flexible function composed of two functions. At least a part of the heating element has air permeability. There are no restrictions on the shape of the section heating section, heating section, and heating element.
The heating element and / or the section heating part may be provided with corners in a substantially arc shape (R shape), and the corners may be curved or curved.
Further, in the segmented heat generating portion heating element of the present invention after the end of heat generation, it is preferable that the loop stiffness of at least one of the segmented portions is 700 mN / cm or less.

The heating element according to the present invention has a flexible function composed of two functions of a structural flexible function and an articulated flexible function supported by various physical properties, and is thin, before heat generation, during heat generation, and end of heat generation. It is a heating element that is soft and soft to the touch after use, that is, before use, during use, and after use.
In addition, when the heating element is adhered to the skin side of clothing that comes into contact with the skin with a heating element having a fixing means, in particular, a section heating part heating element having a fixing means, the adhesive layer is particularly fixed to the breathable surface side. In the case of the heating element described above, the body can be directly heated without causing any harmful effects on the skin, and the direct heating element cannot be obtained. In the case of a double-sided breathable heating element, in the case of a heating element having an adhesive layer as a fixing means on the non-breathable surface side, steam generated from the heating element can be supplied to the skin.
The divided heat generating part heating element of the present invention forms a divided heat generating part heating element group including its deformation. Rigid soft heating element, stripe heating element, detachable heating element, telescopic heating element, band heating element, tunnel ventilation heating element, drug heating element, detachable tunnel ventilation heating element, detachable drug heating element, outer temporary attachment with outer bag A folding heating element is an example. In addition, examples include a heat generating element in which an intermittent cut is made in a separable heat generating element, a telescopic heat generating element, a separable tunnel ventilation heat generating element, a separable chemical heating element, and the like.
It is preferable that the segment heating part heating element of the present invention further has at least one of the following items.
1) A heating element having a maximum tensile strength at 25 ° C. of 20 g / mm width or more and an elongation at break of 5% or more at 25 ° C. is an example.
2) The loop stiffness of at least one section is 700 mN / cm or less.
3) At least some partial areas of the section are provided with intermittent cuts.
4) Further, at least a part of each divided heat generating portion is covered with a local ventilation material, and has a space portion surrounded by the ventilation side of the divided heat generation portion, the partitioning portion, and the local ventilation material, and at least a space portion of the divided heat generation portion. The exothermic composition is ventilated from the side vent portion facing the surface.
5) The minimum bending resistance is 70 mm or less.
6) The minimum bending resistance change is -95 to 0.
7) The minimum bending resistance difference is 0 mm or less.

  In particular, when the loop stiffness of the storage unit for the heating element according to the present invention is 300 mN / cm or less, preferably 0.01 to 250 mN / cm, more preferably 0.01 to 200 mN / cm, It has excellent flexibility that the body part can be easily bent. Further, when the loop stiffness of at least one section is 300 mN / cm or less, preferably 0.01 to 250 mN / cm, more preferably 0.01 to 200 mN / cm, the section of the section heating section heating element is Has excellent flexibility to bend more easily.

It is preferable that the heating element according to the present invention after the heat generation according to the present invention further has at least one of the following items as a subordinate concept.
1) The maximum tensile strength at 25 ° C. of at least one section is preferably 20 g / mm width or more, and the elongation at break at 25 ° C. is preferably 5% or more.
2) In at least one kind selected from the loop stiffness of the section, the maximum tensile strength at 25 ° C. and the elongation at break of the section, each region has a physical property of 0.3 to 1.7 times the average value of the corresponding physical properties. Preferably it has a value.

In the segment heating part heating element of the present invention,
1) The loop stiffness of the storage body was set to 700 mN / cm or less, the flexibility of the storage body was ensured, and the moderate flexibility of the section heating part heating element was ensured.
2) The maximum tensile strength at 25 ° C. of at least one section is 20 g / mm width or more, and the elongation at break at 25 ° C. is 5% or more, preferably the maximum tensile strength at 25 ° C. of each section Is 30 g / mm width or more, the elongation at break at 25 ° C. is 10% or more, and the toughness for maintaining the structure of the heating element of the segmented heating section and the extensibility for maintaining flexibility are ensured.
3) The loop stiffness of at least one section was set to 700 mN / cm or less to ensure the flexibility of the joint of the heating element.
4) The minimum bending resistance of the segment heating element heating element is 70 mm or less, the minimum bending resistance change is −95 to 0 and / or the minimum bending resistance difference is 0 or less, before use, during use, during use A heating element with no change in flexibility was secured after completion.
5) The loop stiffness of the storage body after the end of heat generation is set to 700 mN / cm or less to ensure the flexibility of the storage body. Ensured flexibility.
6) Cover at least a part of each section heat generating part with a local ventilation material, adjust the ventilation to the heat generating composition and keep the temperature in place, or make intermittent cuts in a part of the part of the section part. The heat generating body group of the divided heat generating part with a wide base was formed.

The loop stiffness of the storage body according to the present invention generates heat in a direction that passes through the section heating section region and the section of the storage body in which the section heating section area that is a non-sealing area and the section section that is a sealing area coexist substantially orthogonally. The loop stiffness of at least one of the sections of the plurality of storage bodies cut in the longitudinal direction of the region including the seal portion at the periphery of the body may be 700 mN / cm or less.
The loop stiffness of the segmented portion of the present invention may be such that when there are a plurality of segmented portions, the loop stiffness of at least one of the plurality of segmented portions is 700 mN / cm or less.
As the loop stiffness of the container of the present invention and the loop stiffness of the section according to the present invention, values measured at room temperature, preferably at 25 ° C. are adopted.
The maximum tensile strength of the section at 25 ° C. of the present invention may be such that, when there are a plurality of sections, the maximum tensile strength of at least one of the sections is 20 g / mm width or more.
The breaking elongation at 25 ° C. of the present invention may be such that, when there are a plurality of dividing portions, the breaking elongation of at least one of the plurality of dividing portions is 5% or more.

  The “classified heat generating portion” of the present invention is a region in the heat generating body of the divided heat generating portion that contains a heat generating composition.

  The “dividing part” of the present invention is a non-contained area of the exothermic composition in the central part other than the peripheral part of the heating element, and is an area where the packaging materials such as the base material and the covering material are sealed together. It is a connecting part that exists between the segment heat generation part and the segment heat generation part and allows the segment heat generation part to exist at intervals, and is a hinge (bending region). As long as the section is a seal region, there is no limitation, and examples include a heat seal region, an adhesive (pressure-sensitive) seal region, and an adhesive seal region. A heat seal region (heat seal portion) is particularly preferable.

  The “plurality of divided heat generating portions” of the present invention means two or more, preferably three or more, more preferably four or more divided heat generating portions. The same applies to the divided heat generating area. The “plurality of sections” in the present invention means two or more, preferably three or more, more preferably four or more sections.

  The section heat generating section has a convex shape at least on one side with the section section as a boundary, and is composed of a top and a side section.

Due to the kind and thickness of the sealing layer made of a raw material film or a heat seal material made of a polyethylene film or a porous film constituting the base material or the covering material, the flexibility of the exothermic composition container is infinite. It is different and greatly affects the flexibility of the heating element.
Only the structure in which the heating element is a combination of a segment heating part containing a heating composition and a segmenting part not containing a heating composition, or by increasing the weight of the heating composition of the segment heating part, the stiffness of the heating element A heating element with good touch, good flexibility, and good wearability cannot be achieved simply by setting the value below a specific value.
On the other hand, the heating element of the present invention limits the loop stiffness of the storage body to 700 mN / cm or less, thereby ensuring the flexibility of the storage body accurately, and reducing the weight of the heating composition of the section heating part. Without increasing, the section corresponding to the joint of the human body is soft, and the heating element is excellent in flexibility.
In addition, since the maximum tensile strength at 25 ° C. of the at least one section is 20 g / mm width or more and the elongation at break at 25 ° C. is 5% or more, the section that is a sealed connection section is the section. The section heat generation part is maintained and the section heat generation part is surely supported while maintaining the shape as above, functions as a hinge, and bends preferentially over the section heat generation part containing the heat generation composition.
Furthermore, by limiting the loop stiffness of the segmented portion to 700 mN / cm or less, it is possible to impart better waist strength (hardness) to the segmented portion and obtain a favorable hinge function. Incorporating these factors, the minimum bending resistance of the heating element is 70 mm or less, and the change in minimum bending resistance is −95 to 0 and / or the difference in minimum bending resistance is 0 or less. There is no sense of incongruity, the section corresponding to the joint is soft and flexible, the flexibility of the heating element does not change before and after the heat generation, and the flexibility does not change before, during, and after use. Alternatively, a heating element with increased flexibility can be secured.
Furthermore, since the flexibility does not change or increases, it is difficult for the body or object to peel off from the affixed part, the adhesiveness (adhesiveness) is not easily lost, and the wearability and adhesion are excellent. A heating element heating element is obtained. It is preferable that the loop stiffness of the storage body after the end of heat generation and the loop stiffness of at least one section of the storage body are 700 mN / cm or less.

The section heating part heating element of the present invention is composed of a section heating part and a sectioning part, and has a flexibility consisting of a structural flexible function and an articulated flexible function, incorporating a storage body defined by loop stiffness into the constituent members. It has excellent flexibility to fit the body due to the flexibility of the heating element itself, good conformity to the heated body, non-repulsive, good wearing feeling and touch, and practical flexibility It has a heating element.
The air permeability of the segment heating part heating element of the present invention may be at least part of the segment heating part heating element. It may be on both sides. It is preferable to have a fixing means in at least a part of the exposed portion of the heat generating element according to the present invention. The shape of the heating element of the present invention and the shape of the section heating part are not necessarily the same. Further, the heating element and / or the section heating part may be provided with corners in a substantially arc shape (R shape), and the corners may be curved or curved.

  The structural flexible function is a function that imparts flexibility resulting from a structure in which the heating element has a region that is difficult to bend and a region that is easily bent. That is, it is a function that makes the entire heating element flexible. Specifically, it is a heating element composed of a segment heating part having a hydrous heat generating composition in a region that is difficult to bend, and a segmenting part that is a sealed region without a hydrous heat generating composition in a region that is easily bent. . By defining the loop stiffness of the housing constituting the heating element to a predetermined value, the flexibility and feel of the entire heating element are realized.

  The articulating flexible function is a function that gives flexibility to a section corresponding to the joint of the heating element, and the section can be bent smoothly. In other words, it is a hinge function that operates with a weak force. By reducing the loop stiffness of the storage body or the like, the section of the section heating section heating element can be bent, and practical flexibility can be secured.

  By combining the structural flexible function and the articulating flexible function, the function that the section can be smoothly bent before, during, and after the heat generation was secured.

  At least one section of a storage body including a section heat generating area for storing the water-containing heat generating composition, a non-storage area, a seal area, a connecting section, and a section that is a hinge (bending area). The loop stiffness is 700 mN / cm or less, and the maximum tensile strength at 25 ° C. of the at least one section is 20 g / mm width or more, and the elongation at break at 25 ° C. is 5% or more. Hinge showing good waist strength and softness with a maximum tensile strength at 25 ° C of 30 g / mm width and a breaking elongation at 25 ° C of 10% or more. It embodies the function.

  The loop stiffness of the storage body after the end of heat generation and the loop stiffness of at least one section of the storage body are set to 700 mN / cm or less, the loop stiffness of the storage body before and after the end of heat generation, and at least one of the storage body. By making the loop stiffness of the two sections almost equal or not changing, it is possible to secure the function that the section can be bent more smoothly before heating, during heating, and after the end of heating, and heat generation with more flexibility. The body can be secured.

  After incorporating these elements, the minimum bending resistance of the heating element is 70 mm or less, the minimum bending resistance change is −95 to 0 and / or the minimum bending resistance difference is 0 or less, The unevenness is gentle, there is no sense of incongruity, the section that hits the joint is soft and flexible, the flexibility of the heating element before and after the heat generation does not change, and it is flexible before use, during use, after use It is possible to secure a heating element that does not change its property or increases its flexibility. Because flexibility does not change or increases, along the shape of the heated body such as the body and objects, it is easy to peel off from the affixed part, excellent wearability and adhesion, A segment heating element can be provided.

The loop stiffness of the storage body of the present invention is an index indicating the flexibility of the heating element, and is an index expressed numerically by taking into account both the flexibility and non-repulsiveness of the storage body.
Thereby, the flexibility of the heating element, in particular, the flexibility of the divided heating part heating element composed of a plurality of divided heating parts and the dividing part and the similar heating element can be accurately expressed numerically.
In addition, when the heating element is placed along a body to be heated, the heating element can be easily placed along the heating body regardless of the weight of the heating composition of the heating element. This is an index for realizing a non-repulsive heating element that does not return to its original state due to repulsive force.
If the loop stiffness of the storage body is increased, the repulsive force is increased, the flexibility of the storage body is lost, the heating element is stiffened, the flexibility is lost, and the touch is not good.
The loop stiffness of the storage body can define both flexibility and resilience, but the minimum bending resistance cannot define resilience due to bending even if it can define flexibility.
When the flexibility of the heating element is defined, both flexibility and repulsion can be defined, and flexibility can be defined.
The heating element having the storage body defined by the loop stiffness of the present invention has the flexibility of the heating element, in particular, the flexibility of the divided heating part heating element composed of a plurality of divided heating parts and the dividing part and the similar heating element. A heating element that is capable of accurately expressing numerical values and has good touch and flexibility is realized and can be provided.
Although there is no restriction | limiting in the adjustment method of the loop stiffness of the storage body of this invention, It is preferable to adjust with sealing layers, such as a packaging material and a heat sheet layer, an adhesive layer, and the width | variety and number of division parts.

The loop stiffness of the section of the present invention is an index expressed numerically by taking into account both the flexibility and the non-repulsive property of the section, which is the bent region that is the hinge of the section heating element heating element. When the loop stiffness of the section is increased, the repulsive force is increased, the flexibility of the section is lost, the heating element is stiffened, the flexibility is lost, and the touch is not good.
The loop stiffness of the section is independent from the loop stiffness of the storage body, but when combined, the section heat generator group (the section heat generator and its similar heat generation is flexible and comfortable to touch. To say the body).

   In the section, by limiting the loop stiffness of at least one section to 700 mN / cm or less, it is possible to impart good waist strength (hardness) to the section, and a good hinge function is obtained, The flexibility of the joint of the heating element was secured.

  The loop stiffness of the storage body after the end of heat generation according to the present invention is used when the obtained segment heating part heating element is heated in a normal atmosphere and the temperature of the segment heating part heating element falls below 37 ° C. Assuming the end, the end of the heating section of the heating element after the end of heat generation is opened, the heating composition is taken out, and the heating section area and the sealing section are the non-sealing part of the container that is the remaining packaging material. It is the loop stiffness of the section of the storage body cut in the longitudinal direction of the region including the seal portion at the periphery of the segment heating element heating element in a direction passing through the segmenting section almost orthogonally. This is an index of the flexibility of the storage body after the end of heat generation.

The storage body uses a base material and a covering material composed of a substantially flat packaging material, and has a structure consisting of a region for storing the excess water heating composition and a hinge (bending region), At least a part of one surface of the storage body has air permeability.
A packaging material having a layer or region composed of an adhesive, an adhesive, a heat seal material, etc. is treated as a single packaging material, and a packaging material such as a texture material, a laying material, a cushioning material, etc. When not fixed, the packaging material is removed, and mechanical properties such as loop stiffness are measured.

  The loop stiffness of the container before heat generation according to the present invention is 700 mN / cm or less, preferably 600 mN / cm or less, more preferably 0.01 to 600 mN / cm, and still more preferably 0.01 to 500 mN. / Cm, more preferably 0.01 to 400 mN / cm, still more preferably 0.01 to 300 mN / cm, still more preferably 0.1 to 300 mN / cm, and still more preferably 0.1. To 250 mN / cm, more preferably 0.1 to 200 mN / cm, more preferably 0.5 to 200 mN / cm, still more preferably 1 to 200 mN / cm, and still more preferably 5 to 200 mN. / Cm, more preferably 10 to 200 mN / cm. When it exceeds 900 mN / cm, the waist of a storage body will become strong and each softness | flexibility of a division | segmentation heat_generation | fever part heat heating element group will not be obtained.

  The loop stiffness of at least one section before heat generation according to the present invention is 700 mN / cm or less, preferably 600 mN / cm or less, more preferably 0.01 to 600 mN / cm, and still more preferably 0.8. It is 01-500 mN / cm, More preferably, it is 0.01-400 mN / cm, More preferably, it is 0.01-300 mN / cm, More preferably, it is 0.1-300 mN / cm, More preferably It is 0.1-250 mN / cm, More preferably, it is 0.1-200 mN / cm, More preferably, it is 0.5-200 mN / cm, More preferably, it is 1-200 mN / cm, More preferably It is 5-200 mN / cm, More preferably, it is 10-200 mN / cm. When it exceeds 900 mN / cm, the waist of a storage body will become strong and each softness | flexibility of a division | segmentation heat_generation | fever part heat heating element group will not be obtained.

  The loop stiffness of the container after the heat generation is 700 mN / cm or less, preferably 600 mN / cm or less, more preferably 0.01 to 600 mN / cm, and still more preferably 0.01 to 500 mN / cm. cm, more preferably 0.01 to 400 mN / cm, still more preferably 0.01 to 300 mN / cm, still more preferably 0.1 to 300 mN / cm, still more preferably 0.1 to 300 mN / cm. 250 mN / cm, more preferably 0.1 to 200 mN / cm, more preferably 0.5 to 200 mN / cm, still more preferably 1 to 200 mN / cm, still more preferably 5 to 200 mN / cm. cm, more preferably 10 to 200 mN / cm. When it exceeds 900 mN / cm, the waist of a storage body will become strong and each softness | flexibility of a division | segmentation heat_generation | fever part heat heating element group will not be obtained.

  The loop stiffness of at least one section after the end of heat generation is 700 mN / cm or less, preferably 600 mN / cm or less, more preferably 0.01 to 600 mN / cm, and still more preferably 0.01. To 500 mN / cm, more preferably 0.01 to 400 mN / cm, still more preferably 0.01 to 300 mN / cm, still more preferably 0.1 to 300 mN / cm, and still more preferably 0. 0.1 to 250 mN / cm, more preferably 0.1 to 200 mN / cm, more preferably 0.5 to 200 mN / cm, still more preferably 1 to 200 mN / cm, and still more preferably 5 It is -200mN / cm, More preferably, it is 10-200mN / cm. When it exceeds 900 mN / cm, the waist of a storage body will become strong and each softness | flexibility of a division | segmentation heat_generation | fever part heat heating element group will not be obtained.

  The difference between the loop stiffness of the container before the heat generation and the end of the heat generation, and the difference of the loop stiffness of the section before the heat generation and the end of the heat generation are preferably ± 500 mN / cm, more preferably ± 300 mN / cm. More preferably ± 100 mN / cm, further preferably ± 80 mN / cm, further preferably ± 50 mN / cm, further preferably ± 20 mN / cm, and further preferably ± 10 mN / cm. More preferably, it is ± 5 mN / cm, and more preferably 0 mN / cm.

The maximum tensile strength and elongation at break of the section of the present invention are physical properties for maintaining toughness and flexibility for maintaining the structure of the heating element.
At least one section has a maximum tensile strength at 25 ° C. of 20 g / mm width or more and a breaking elongation at 25 ° C. of 5% or more. The segment heating unit is securely supported while maintaining the interval between the segment heating units, functions as a hinge, and preferentially bends over the segment heating unit containing the heating composition.

  The maximum tensile strength at 25 ° C. of the at least one section is preferably 20 g / mm width or more, more preferably 20 to 2000 g / mm width, still more preferably 20 to 1000 g / mm width, More preferably, it is 20-800 g / mm width, More preferably, it is 20-700 g / mm width, More preferably, it is 20-600 g / mm width, More preferably, it is 20-500 g / mm width, More preferably Is 20-400 g / mm width, More preferably, it is 20-300 g / mm width, More preferably, it is 20-200 g / mm width.

  The elongation at break of the at least one section at 25 ° C. is preferably 5% or more, more preferably 5 to 900%, still more preferably 5 to 800%, still more preferably 5 to 700%. More preferably, it is 5-600%, More preferably, it is 5-500%, More preferably, it is 5-400%, More preferably, it is 5-300%, More preferably, it is 5-200% More preferably, it is 10-200%, More preferably, it is 20-200%.

  The maximum tensile strength at 25 ° C. of at least one section of the storage body after the end of heat generation is preferably 20 g / mm width or more, more preferably 20 to 2000 g / mm width, and still more preferably 20 -1000 g / mm width, more preferably 20-800 g / mm width, more preferably 20-700 g / mm width, still more preferably 20-600 g / mm width, more preferably 20-500 g. / Mm width, more preferably 20 to 400 g / mm width, still more preferably 20 to 300 g / mm width, and still more preferably 20 to 200 g / mm width.

  The breaking elongation at 25 ° C. of at least one section of the container after the heat generation is preferably 5% or more, more preferably 5 to 900%, and further preferably 5 to 800%. More preferably, it is 5-700%, More preferably, it is 5-600%, More preferably, it is 5-500%, More preferably, it is 5-400%, More preferably, it is 5-300% More preferably, it is 5-200%, More preferably, it is 10-200%, More preferably, it is 20-200%.

  At least one of the maximum tensile strength, breaking elongation, and loop stiffness of the section is preferably 0.3 to 1.7 times the average value of the physical properties of each section, and more preferably 0.4 to 1.6 times, more preferably 0.5 to 1.5 times, still more preferably 0.6 to 1.4 times, and even more preferably 0.7 to 1.3 times.

  At least one of the maximum tensile strength, breaking elongation and loop stiffness of the section after the end of heat generation is preferably 0.3 to 1.7 times the average value of the physical properties of each section, more preferably 0.4 to 1.6 times, more preferably 0.5 to 1.5 times, further preferably 0.6 to 1.4 times, more preferably 0.7 to 1.3 times. It is.

  The minimum bending resistance of the heating element is preferably 70 mm or less, more preferably 1 to 70 mm, still more preferably 5 to 70 mm, still more preferably 5 to 60 mm, and further preferably 5 to 50 mm. More preferably, it is 10-50 mm, More preferably, it is 10-40 mm, More preferably, it is 10-30 mm. Thereby, a favorable touch is obtained at the time of contact with the body or use.

  The minimum bending resistance change of the heating element is −95 to 0, preferably −90 to 0, more preferably −90 to −0.01, and further preferably −80 to −0.01. More preferably, it is -70 to -0.01, -60 to -0.01, and more preferably -50 to -0.01.

  The minimum bending resistance difference of the heating element is 0 or less, preferably −69 to 0, more preferably −60 to 0, still more preferably −50 to 0, and still more preferably −40. It is -0, More preferably, it is -30-0, More preferably, it is -20-0, More preferably, it is -10-0, More preferably, it is -5-0.

  The thickness of the heating element is not limited as long as it can be used as a flexible heating element, but is preferably 0.05 to 15 mm, more preferably 0.05 to 10 mm, and still more preferably 0.1 to 10 mm. More preferably, it is 0.1-9 mm, More preferably, it is 0.3-8 mm, More preferably, it is 0.3-7 mm, More preferably, it is 0.5-7 mm, More preferably It is 0.5-5 mm, More preferably, it is 0.3-3 mm.

The rigid and soft heating elements of the present invention have two or more, preferably three or more, more preferably four or more, and still more preferably five or more divided heat generating parts composed of a plurality of exothermic composition molded bodies and one or more. The heating element has a heating portion composed of a plurality of sections, and at least one loop stiffness in the longitudinal direction crossing the section heating section region and the section of the storage body is 700 mN / cm or less, and the minimum bending resistance of the heating element is 70 mm or less. It is a segment heating part heating element which is. It is preferable that the divided heat generating portion and the divided portion are configured in a stripe shape.
In the rigid and soft heating element having a structure in which there is a classification part which is a seal part and does not contain a heat generation composition between the classification heat generation parts containing the heat generation composition, the heat generation composition is slight as heat generation proceeds. The weight of the object increases, and the bending and soft heating element becomes easy to bend at the partitioning portion which is a hinge, and is closely attached to the heated body. The minimum bending resistance change is −95 to 0 and / or the minimum bending resistance difference is 0 mm or less.
The minimum bending resistance of the bending-soft heating element is preferably 100 or less, more preferably 1 to 100, still more preferably 1 to 80, still more preferably 1 to 50, still more preferably. It is 1-40, More preferably, it is 1-30, More preferably, it is 1-20.
The maximum bending resistance ratio of the bending-soft heating element is not limited, but is preferably 1.1 or more, more preferably 1.15 or more, still more preferably 1.2 or more, and still more preferably. It is 1.25 or more, More preferably, it is 2.0 or more, More preferably, it is 2.5 or more, More preferably, it is 3.0 or more.

  The stripe heating element of the present invention is a segment heating part heating element in which the segment heating parts are provided in a stripe shape.

  The separable heating element of the present invention is a segmented heating element heating element provided with a perforated perforation in a region other than the segment heating part of the segment heating element heating element of the present invention. A segment heating part heating element having perforated perforations in at least one section is preferable.

  The expansion / contraction heating element of the present invention is a segment heating part heating element in which staggered cuts are provided in regions other than the segment heating part of the segment heating part heating element of the present invention. A segment heating part heating element having a staggered cut in a part of at least one section is preferable.

The band heating element of the present invention is a segment heating element heating element having a long stretchable support. An example is a long stretchable support or a support in which a segmented heat generating unit or a segmented heat generating unit is fixed via an adhesive, an adhesive, a heat seal material, or the like.
It is good also as a heat generating body which provided fixing means, such as an adhesive and a fastener, in at least one part of area | regions of support bodies other than the said heat generating body. The support is not limited as long as the heating element can be fixed. Examples of the support include packaging materials used for base materials and covering materials. When the support is non-breathable, it is fixed so that the non-breathable surface of the heating element faces the support surface. When the support is breathable, the heating element is fixed to the support by selecting as appropriate.

The tunnel ventilation heating element of the present invention is a heating element having a ventilation part composed of a local ventilation part leading to the outside, a wide area ventilation part leading to the heat generating composition, and a tunnel (space part) therebetween. It is preferable that the size of the ventilation holes is larger in the local ventilation portion than in the wide area ventilation portion, and the number of ventilation holes is larger in the wide area ventilation portion than in the local ventilation portion.
An example is a heating element in which at least a part of a heat generating part composed of a divided heat generating part and a divided part is covered with a local ventilation material, and a space part is formed by a side ventilation part, a divided part, and a local ventilation material of the divided heating part As mentioned.
In a tunnel ventilation heating element based on a section heating section and a section section, a local ventilation material is fixed to at least a part of the top of one or more section heating sections through an adhesive layer made of an adhesive or an adhesive. There is a tunnel ventilation heating element that is not, and a tunnel ventilation heating element in which the local ventilation material is not fixed to the top of the section heating part.

The drug heating element of the present invention includes a side ventilation portion that faces at least a part of a heat generation portion composed of a divided heat generation portion and a partitioning portion and is covered with a local ventilation material having a vent hole, and faces a space portion of the division heat generation portion. A space is formed by the section and the local ventilation member, and the local ventilation member is a heating element fixed at least at the entire peripheral portion of the heating element by a seal. A chemical heating element in which a local ventilation material is fixed to at least a part of the top of one or more segmental heating parts via an adhesive layer made of an adhesive or an adhesive, and a local ventilation material of the segmental heating part There is a drug heating element that is not fixed to the top. By using a non-breathable packaging material for the base material and the local ventilation material, the interaction between the exothermic composition and the exposed portion of the heating element can be prevented. Therefore, the interaction between the exothermic composition and the pressure-sensitive adhesive layer containing the functional substance can be prevented, and the respective functions can be maintained.
In the conventional heating element, the interaction between the heating composition and the exposed portion of the heating element cannot be prevented, and both the heating composition and the pressure-sensitive adhesive layer containing the functional material are altered, and a drug heating element that can withstand practical use cannot be obtained. It was.
Moreover, the chemical | medical agent heating element of this invention can be used also as a normal heating element or a patch, without containing a functional substance.

  The separable tunnel ventilation heat generating body of the present invention has a perforation that can be cut into at least one or more of the fixed section portions, wherein the local ventilation material of the tunnel ventilation heat generating body is fixed to at least one or more section portions. Is provided.

  In the detachable drug heating element of the present invention, the local ventilation material of the drug heating element is fixed to at least one section, and a perforated line is provided in at least one of the fixed section. It is a thing.

The tunnel ventilation heating element and the drug heating element having the local ventilation material with the ventilation blocking sheet do not generate heat until the ventilation blocking sheet is removed, and can be stored for a long time.
Since the packaging material of the outer bag can be omitted, the amount of garbage is reduced and it can contribute to environmental problems.
It is useful to provide a fixing means on at least a part of the exposed portion of the tunnel ventilation heating element and the drug heating element including the local ventilation material.

Since the tunnel ventilation heating element and the drug heating element can adjust the ventilation by the space, the maximum temperature is less than 42 ° C, preferably 41 ° C or less, more preferably 36-41 ° C, and further preferably 36-40 ° C. Can warm up time. This creates a heating element that does not cause low temperature burns. Incidentally, it is said that low temperature burns occur when the skin temperature is raised to 42-44 ° C. for 6 hours or more. Since the heating element based on the segment heating part heating element has no bias in the heating composition from before the heat generation to after the end of the heat generation, it can be heated comfortably.
The tunnel ventilation heating element and the drug heating element are heating elements capable of finely adjusting the ventilation to the heat-generating composition by local ventilation by a large ventilation hole, space, and wide ventilation by a small ventilation hole.

The face temperature heating element of the present invention is a heating element that can cover the face.
In particular, a face temperature heating element that heats the eyes and the vicinity thereof is referred to as an eye temperature heating element.
A face temperature heating element that heats the nose and its surroundings is referred to as a nasal temperature heating element.
1. The face temperature heating element includes 1) an integrated type in which the heating part and its support are integrated, and 2) an assembly type in which the heating part and its support are provided separately and integrated in use.
2. The integrated face temperature heating element can be used immediately and is convenient. Various types of products are provided by selecting the number, size, arrangement, etc. of the divided heat generating portions according to each application, from a wide range of heating to a specific region.
3. The assembly-type face temperature heating element is 1) an insertion type in which the heating element and the heating part are stored in the storage part of the support, and 2) fixing the heating element and the heating part to the support through fixing means such as an adhesive layer. There is a pasting formula.
When heating only a specific area of the face, the facial temperature heating element can be used by inserting a minimal heating element into a support such as a mask or by attaching it to the support with a fixing means such as an adhesive. It is also useful.
The minimal heating element is not limited, but is a minimal heating element having a single heating part, having two or more divided heating parts, and provided with a cut (perforation, etc.) that can be cut off manually in the dividing part. An example is a segmented heat generating part separated from the heat generating element.
4). The shape of the face temperature heating element is not limited, but examples include rectangular, mask shape, and eye mask shape. 5 A texture material is provided on at least one of the face side and the opposite side of the face temperature heating element. It is preferable to improve the feel.
6). The means for fixing the face temperature heating element to the face or the like is not limited, but examples include an ear strap, an ear strap, and an ear strap rubber.
7). The structure of the expansion / contraction heating element provided with alternate cuts and the face temperature expansion / contraction heating element having various expansion / contraction functions are preferable for tight fixation to the face or the like. As an example of the assembly type, a heating element in which a staggered cut is provided in a support such as a mask and a single heat generating part or a small single heat generating part is inserted or stuck between the staggered cuts is an example.
8). A functional substance or the like may be carried inside or outside the face temperature heating element to have a fragrance effect or a pharmacological effect. For example, an integral type or a push-in type using a sheet material coated with an aqueous pap base is cited.
9. In order to maintain an appropriate temperature of the face temperature heating element to the warmed body (contact temperature to the warmed body is 42 ° C. or lower, preferably 40 ° C. or lower, more preferably 36 to 40 ° C.) It is preferable to use a heating part or a heating element having a structure of a drug heating element provided with a local ventilation material for the face temperature heating element. Temperature buffer materials are also useful.
10. In the face temperature heating element, at least a part of the section heating part is breathable due to moisture permeability, and also has moisture permeability, so the skin side is moisture permeable and water vapor from the heating composition is released toward the skin. It is preferable to select a type that makes the skin side surface moisture-impermeable and does not release water vapor from the exothermic composition toward the skin.
11. For the eye temperature heating element and the nasal temperature heating element, the above 1. -10. The following items are applicable.
12 The nasal temperature heating element is preferably provided with one or more heating parts or small heating elements at positions corresponding to at least both sides of the nose. In the case of the assembly type, it is preferable that one or more heating parts or small heating elements are attached to the region of the container such as a mask.
13. As an example of the heating element, 1) the integrated type is an integrated face temperature heating element, the integrated eye temperature heating element, the integrated nose temperature heating element, and 2) the assembled type is an assembled type face temperature heating element, an assembled type eye temperature. Heating element, assembled nose temperature heating element, 3) insertion type is insertion type face temperature heating element, insertion type eye temperature heating element, insertion type nose temperature heating element, 4) pasting type is pasting type face temperature heating element Body, pasting type temperature heating element, pasting type nose temperature heating element, 5) face temperature expansion and contraction heating element, eye temperature expansion and contraction heating element, and nasal temperature stretching and heating element in each formula.
Also,
1) The container such as the mask of the present invention may be provided with a moisture holding body that releases water vapor separately from the heating element. As the moisture retainer, non-woven fabric, woven fabric, porous polymer impregnated with water, water-absorbing polymer water absorbed, or the like can be used.
2) The shape and material of the mask body are not limited as long as the heating element can be attached and either or both of the nose and mouth can be covered.

  The constituent material of the temperature buffer material of the present invention is not limited as long as the temperature from the heat generating part can be buffered, but (1) gauze, various woven fabrics, nonwoven fabrics, (2) papers such as paper and synthetic paper, (3) Porous film or porous sheet formed from plastic, natural rubber, recycled rubber or synthetic rubber, (4) Foamed plastic such as urethane foam having perforations, (5) A kind of metal foil such as aluminum having perforations Or a combination of a plurality of types can be cited as an example. In addition, when controlling temperature using these temperature buffer materials, selection of the material, thickness, etc. of a temperature buffer material are selected suitably. What is necessary is just to select suitably also when making the water vapor | steam which generate | occur | produces from a heat generating body reach eyes or a face. The temperature buffer material can be used not only for eyes and faces but also for other heating elements.

  Moreover, as a space | gap for controlling the temperature which reaches | attains the face of this invention, it is preferable that the distance of a heat generating body and a face shall be 1-10 cm.

  The eye temperature heating element of the present invention, the eye temperature heating element with a local ventilation material, which is an example of the face temperature heating element, and the face temperature heating element with a local ventilation material are locally ventilated on the ventilation surface of the eye temperature heating element or the face temperature heating element. It is a heating element provided with a material, the temperature can be adjusted more precisely by local ventilation, and an appropriate temperature such as 38 to 45 ° C., preferably 38 to 40 ° C. can be maintained.

  The ear hooking part in the present invention is not limited, and examples thereof include rubber strings, cotton strings, and hollow (boring) nonwoven fabrics.

  An outer temporary folding folded heating element with an outer bag of the present invention is a heating element stored in a non-breathable storage body in a folded or wound state, and at least an exposed portion of the heating element body (heating element). A part of the bag may be temporarily attached to the inner surface of the outer bag, which is a non-breathable container (hereinafter referred to as outer temporary attachment). Outer temporary attachment means that the heating element main body and the outer bag which is a non-breathable container are in contact with each other at least partially via the re-peeling weak adhesive layer. Thereby, the movement of the heating element body on the packaging material can be prevented at least until the heating element body is folded together with the packaging material of the outer bag. Thereby, high-speed manufacture of a heating element is attained. There are no restrictions on the number, area, etc. of outer temporary wear. In the case of a heating element having a separator that protects fixing means such as an adhesive layer, the separator is also treated as a heating element.

  The heating element of the present invention may be enclosed in an outer bag or folded and enclosed in an outer bag without external temporary attachment.

The shape of the exothermic composition molded body or the section heating portion may be any shape, but it is a planar shape, such as a circle, an ellipse, a football shape, a triangle, a square, a rectangle, a hexagon, a polygon, a star shape, a flower shape, a ring shape, etc. Is given as an example. In three-dimensional shape, disk shape, pyramid shape, spherical shape, cube shape, polygonal pyramid shape, cone shape, frustum shape, spherical shape, parallelepiped shape, cylindrical shape, rectangular parallelepiped shape, polyhedron shape, ellipsoid shape, Examples include a semi-cylindrical shape, a semi-elliptical cylinder shape, a bowl shape, a cylindrical shape, and an elliptic cylinder shape.
In addition, in these shapes, the corners may be provided in a substantially arc shape (R shape), the corners may be curved or curved, or the center may have a recess.
In the present invention, a region corresponding to a corner (an end corner) such as an exothermic composition molded body, a heat generating portion, a segmented heat generating portion, a heat generating body, a seal portion, a through hole, a concave portion, or a convex portion is substantially arc-shaped (R ( r) shape).
Although there is no restriction | limiting in the curvature radius as this substantially circular arc shape (r (r) shape) shape, Preferably it is 0.1-20.0 mm, More preferably, it is 0.1-10.0 mm, Furthermore, Preferably it is 0.1-5.0 mm, More preferably, it is 0.3-5.0 mm, More preferably, it is 0.3-3.0 mm, More preferably, it is 0.5-2.0 mm .

  In the section heat generating portion structure, the section heat generating portion is formed in a unified structure having at least two facing surfaces, preferably a film layer substrate surface, wherein at least one surface is oxygen (air) permeable. When the exothermic composition molded body is accommodated, the exothermic composition molded body volume, the space volume, and the section heat generating portion volume have the following relationship. The exothermic composition molded body volume is the volume of the exothermic composition molded body itself, the spatial volume is the volume not occupied by the exothermic composition molded body in the section heating section, and the section heating section volume is the volume of the section heating section. The volume is the sum of the space volume and the exothermic composition molded body volume.

Although there is no restriction | limiting in the size of the said division | segmentation heat_generation | fever part, Preferably it is the following size.
1) In the case of disk shape and disk-like shape The diameter or maximum diameter is preferably 1 to 60 mm, more preferably 2 to 50 mm, still more preferably 10 to 40 mm, and further preferably 20 to 30 mm. . The height is preferably 0.1 to 20 mm, more preferably 0.3 to 20 mm, still more preferably 0.5 to 20 mm, still more preferably 0.5 to 10 mm, and still more preferably. It is 0.5-9 mm, More preferably, it is 0.5-8 mm, More preferably, it is 0.5-7 mm, More preferably, it is 1-7 mm. The volume is preferably about 0.0045-20 cm ³ , more preferably 0.2-11 cm ³ .
2) When the shape is other than the above 1) (rectangular, rectangular-like shape, etc.) The width is preferably 0.5 to 60 mm, more preferably 0.5 to 50 mm, still more preferably 1 to 50 mm. Yes, more preferably 3 to 50 mm, still more preferably 3 to 30 mm, still more preferably 5 to 20 mm, still more preferably 5 to 15 mm, and still more preferably 5 to 10 mm. Further, the height is preferably 0.1 to 30 mm, more preferably 0.1 to 20 mm, still more preferably 0.1 to 10 mm, still more preferably 0.3 to 10 mm, and further Preferably it is 0.5-10 mm, More preferably, it is 0.5-7 mm, More preferably, it is 1-7 mm. Further, the length is preferably 5 to 300 mm, more preferably 5 to 200 mm, still more preferably 5 to 100 mm, still more preferably 20 to 100 mm, and further preferably 30 to 100 mm.
Further, the surface area is not limited as long as it has a function as a segmented heat generating portion, but is preferably about 50 cm ² or less, more preferably about 40 cm ² or less, still more preferably less than about 25 cm ² , still more preferably. Is less than 20 cm ² .
The volume of the segment heat generating part or the volume of the exothermic composition molded body is usually 0.015 to 500 cm ³ , preferably 0.04 to 500 cm ³ , more preferably 0.04 to ³⁰ cm ³ , More preferably, it is 0.1-30 cm < ³ >, More preferably, it is 1-30 cm < ³ >, More preferably, it is 1.25-20 cm < ³ >, More preferably, it is 1.25-10 cm < ³ >, More preferably, 3 -10 cm ³ .

  The width of the section is not limited, but is preferably 0.1 to 50 mm, more preferably 0.2 to 50 mm, still more preferably 0.3 to 50 mm, and still more preferably 0.3. It is -40mm, More preferably, it is 0.5-40mm, More preferably, it is 0.5-30mm, More preferably, it is 1-20mm, More preferably, it is 3-10mm.

  When the exothermic composition molded body is accommodated in the segmented exothermic part, which is the exothermic composition storage area, the volume of the exothermic composition molded body, which is the exothermic composition molded area, and the exothermic composition storage area, The volume ratio with the volume of the divided heat generating part is usually 0.6 to 1, preferably 0.7 to 1, more preferably 0.8 to 1, and still more preferably 0.9. ~ 1.

“Providing the segmented heat generating portions of the present invention at intervals in the form of stripes” means that a plurality of segmented heat generating portions are spaced in a streak shape (elongated and continuous) (parallel lines, parallel curves, etc.) ) Is provided. One streak is preferably composed of one section heat generating portion. In this case, the section heating section and the section section may be linear or curved. Moreover, as long as the following conditions are satisfied, one streak may be composed of two or more divided heat generating portions and one or more divided portions.

T ≧ 2.5S and P ≦ 0.5T

T: Length of one section heating part
S: Width of one section heating part
P: Length of the section

An example is the arrangement of streaks composed of segmented heat generating parts in parallel stripes (vertical stripes, horizontal stripes, diagonal stripes, vertical wave stripes, horizontal wave stripes, diagonal wave stripes, etc.).

  The said fixing | fixed part is an area | region fixed to a packaging material when manufacturing a heat generating body, and is comprised from an adhesive layer, an adhesion layer, a heat seal layer etc. or those arbitrary mixed layers, and those combinations.

  The adhesive layer is composed of an adhesive, a pressure-sensitive adhesive, a heat seal material, etc., and when the heating element is manufactured, the packaging material and the packaging material, and / or the packaging material is fixed to the heating element or bonded together. There is no limitation as long as the packaging material can be fixed. Examples of the constituent material include an adhesive such as a cyan adhesive, a pressure-sensitive adhesive described in the present specification, and a heat seal material.

  The pressure-sensitive adhesive layer is composed of a pressure-sensitive adhesive, and is a fixing layer such as a packaging material and a packaging material, and / or a packaging material fixed to the heating element or bonded together when manufacturing the heating element, There is no limitation as long as the packaging material can be fixed. An example of the constituent material is the pressure-sensitive adhesive described in the present specification.

  The mixed layer is a layer having at least two or more selected from the constituent components of an adhesive layer, an adhesive layer, and a heat seal layer.

  As the constituent material of the adhesive layer, the pressure-sensitive adhesive layer, and the temporary adhesive layer, those conventionally used in chemical warmers, heating elements, and poultices, and those technically disclosed can be used.

  When heat-sealing a packaging material such as the base material or the covering material, in addition to a normal heat-sealing method, a temporary adhesive layer composed of an adhesive, preferably a weak adhesive, is provided on at least one heat-sealing layer. A temporary heat sealing method may be performed in which temporary attachment is performed via a temporary attachment layer by means of a pressing pressure, and then heat sealing is performed. In this case, the seal portion includes a layer of the heat sealing material in which the temporary adhesive layer component and the heat sealing material are mixed. The temporary heat sealing method is a sealing method useful for increasing the speed of heat sealing. The heat sealing material may also serve as a packaging material such as a base material or a coating material.

In the present invention, there are no restrictions on the installation method, pattern, and shape of the pressure-sensitive adhesive layer, pressure-sensitive adhesive layer, adhesive layer, and temporary bonding layer, as long as the heat generating element functions as a heat generating element. In addition, examples include various patterns and shapes such as intermittent provision, dot shape, mesh shape (mesh shape), stripe shape, lattice shape, dot shape, and belt shape.
Examples of the installation method include an appropriate method such as a melt blow method, a curtain spray method, or a gravure method.
For forming the breathable pressure-sensitive adhesive layer, for example, a hot-melt type pressure-sensitive adhesive material is blown and developed through hot air under heating and melting, and a melt-blow method or a pressure-sensitive adhesive is provided intermittently. A coating method such as a gravure method is useful.

  The material constituting the pressure-sensitive adhesive layer, the pressure-sensitive adhesive layer, the adhesive layer, and the temporary attachment layer is not limited as long as these functions can be maintained, and the pressure-sensitive adhesive, acrylic-based, epoxy-based adhesives, known warmers, A pressure-sensitive adhesive used for the heating element, a commercially available adhesive or pressure-sensitive adhesive, a known adhesive or pressure-sensitive adhesive, or the like can be used.

  The thickness of the temporary adhesive layer (adhesive layer) is not limited as long as it can be temporarily applied, but is preferably 0.1 to 1000 μm.

  The thickness of the adhesive layer for fixing the local ventilation material is not limited as long as the local ventilation material can be fixed, but is preferably 1 to 1000 μm.

  The thickness of the pressure-sensitive adhesive layer is not limited as long as the heating element can be fixed, but is preferably 5 to 1000 μm.

The fixing means is not limited as long as it has a fixing capability capable of fixing the heating element to a required portion. Furthermore, the fixing means is preferably removable. Adhesive layers, key hooks, hook buttons, hook and loop fasteners such as magic tape (registered trademark), magnets, bands, strings, ear hooks, etc., which are generally used as the fixing means, and combinations thereof are arbitrarily selected Can be used for
In the case of a band, the adjustment fixing means may be further configured by a combination of a hook-and-loop fastener and an adhesive layer. There are no restrictions on the installation method, installation location, installation pattern, and the like of the fixing means, and it may be determined as appropriate. Moreover, you may provide a separator to a fixing means as protection until it is used. The separator may be provided with a notch such as a back split to facilitate its peeling. Note that the fixing means of the present invention can be used by appropriately selecting fixing means (including attaching means that can be removed) that have been conventionally disclosed or commercially available, or that are used for known disposable warmers or heating elements.

The pressure-sensitive adhesive layer is composed of a pressure-sensitive adhesive. The pressure-sensitive adhesive is not limited as long as the heating element can be fixed, and those conventionally used for chemical warmers, heating elements and poultices, and those technically disclosed can be used.
The pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer is not limited as long as it has an adhesive force necessary for adhering to the skin and clothes, and is solvent-based, aqueous-based, emulsion-type, hot-melt-type, and reactive. Various forms such as a pressure-sensitive system or a non-hydrophilic pressure-sensitive adhesive, a mixed pressure-sensitive adhesive, a hydrophilic pressure-sensitive adhesive (gel, etc.) are used.
Moreover, as an adhesive layer, even if it has air permeability, it may not have air permeability. What is necessary is just to select suitably according to a use. Examples of the air-permeable pressure-sensitive adhesive layer include a pressure-sensitive adhesive layer in which the pressure-sensitive adhesive is partially present and the whole region is air-permeable, for example, a mesh-shaped pressure-sensitive adhesive layer or a stripe-shaped pressure-sensitive adhesive layer. The pressure-sensitive adhesive may be laminated as it is on the breathable base material and / or the covering material, or the pressure-sensitive adhesive laminated on the separator may be attached to the base material and / or the covering material.

  Examples of the adhesive constituting the non-hydrophilic adhesive layer include acrylic, urethane, rubber, silicone, polyisoprene, polyisobutene, styrene-isoprene-styrene (SIS), styrene-isoprene, and the like. Each pressure-sensitive adhesive can be used. In particular, acrylic or styrene-containing systems that can be hot-melt processed are preferably used. As the styrene-containing pressure-sensitive adhesive, a styrene-butadiene-styrene block copolymer (SBS), a styrene-isoprene-styrene block copolymer (SIS), or a hydrogenated type thereof (SEBS, SIPS) or the like is used as a base polymer. An example is a styrenic hot melt pressure sensitive adhesive.

  The hydrophilic pressure-sensitive adhesive constituting the hydrophilic pressure-sensitive adhesive layer is not particularly limited as long as it has adhesiveness with a hydrophilic polymer or a water-soluble polymer as a main component and is hydrophilic as the pressure-sensitive adhesive. Specifically, hydrophilic polymers such as polyacrylic acid, water-soluble polymers such as sodium polyacrylate and polyvinylpyrrolidone, and the like are listed as examples.

  At least a part of the exposed portion of the heating element and the pressure-sensitive adhesive layer is a water retention agent, a water-absorbing polymer, a pH adjuster, a surfactant, an organosilicon compound, a hydrophobic polymer compound, a pyroelectric material, an antioxidant, a bone You may contain at least 1 type chosen from the additional component which consists of material, a fibrous material, a moisturizer, a functional substance, or these mixtures.

The intermittent cut according to the present invention includes a cut portion and a connecting portion (between the cut portion and the cut portion) penetrating therethrough. There are no restrictions on the shape, type, size (length, width, etc.), and combinations of these intermittent cuts, cuts, and joints. You may provide a notch in this intermittent notch.
The intermittent incision shapes are: (a) alternate notches, (b) straight notches (perforations), (b) alternate notches with V notches, (b) straight notches with V notches (perforations with V notches). ) Etc. are mentioned as an example. The V notch may be changed to another notch such as a U notch or an I notch.
At least one end of intermittent cuts such as perforations and staggered cuts of the present invention may or may not be in contact with at least one side of the heating element and at least one notch.

  The installation location and number of intermittent cuts in the heating element of the present invention can be provided in any number in any region other than the segmented heat generating portion, but the segmented portion is preferable as the installation region. Further, the cut provided in the heating element having the separator may be a cut that penetrates the separator, or may be a cut that does not penetrate the separator.

  In the perforated perforations and alternate cuts, which are a kind of the intermittent cuts, the cut portions are preferably longer than the joint portions. Further, this is not the case when hand cutting is possible depending on the type of packaging material, the bendability is improved, and the case where expansion and contraction is possible. Further, this is not the case in the vicinity of the end of the intermittent notch or the side of the heating element. Each length may be selected in consideration of the type of packaging material, the vicinity of the side of the heating element, the position of the perforation such as the vicinity of the notch, and the like.

  The perforations of the present invention are usually in a single row, but can be selected according to the application, such as providing a plurality of adjacent rows, providing them in parallel, providing them in a staggered manner, and combinations thereof.

The alternate cuts of the present invention are two or more intermittent cuts arranged alternately. There are a pair of intermittent cuts that are different from each other in the arrangement cycle of at least the cut part and the connecting part, and are pulled in at least one direction. There is no limitation as long as it is a group of intermittent cuts having one or more directions in which at least a part of the pulling direction is deformed and / or can be extended and / or expanded and contracted. Are arranged such that a plurality of intermittent cuts are arranged at intervals, and the arrangement cycle of adjacent intermittent cuts is different with respect to one direction. Examples of staggered cuts with a set of 5 and staggered cuts with a set of 5 rows.
When the staggered cuts are stretched, the shapes of a plurality of cuts that pass through the staggered thickness in the thickness direction change, and the staggered cuts are deformed into a network structure, so that they can expand and contract. it can.

  The extensibility of the present invention is a property that extends in the direction in which tension is applied when tension is applied, and the length after removing the tension is not limited. That is, it does not matter whether or not to return to the original state. Displayed as an expansion rate. Extensibility includes elasticity.

  The contractility of the present invention is a property that is shorter than the length at the time of elongation when tension is removed in the stretched state. Displayed as shrinkage. The contraction property may be contracted, and it is not always necessary to contract and return to the state before extension.

  The stretchability of the present invention is a property composed of the extensibility and the contractility. Displayed in terms of elongation and shrinkage. The contraction property may be contracted, and it is not always necessary to contract and return to the state before extension.

  In the intermittent incision according to the present invention, the ratio of the incision part to the joint part (notch part / joint part) is preferably 1.0 to 30, more preferably 1.01 to 30, and still more preferably 1. 0.01 to 20, more preferably 1.1 to 20, more preferably 1.3 to 20, still more preferably 1.5 to 20, and still more preferably 1.5 to 15. More preferably, it is 1.5-10, More preferably, it is 2.0-10.

The size of the cut portion is not limited, but the length is preferably 1 to 100 mm, more preferably 1 to 50 mm, still more preferably 1.5 to 50 mm, and further preferably 2 to 30 mm. More preferably, it is 5-20 mm.
The width is preferably more than 0 mm, more preferably more than 0 and 5 mm or less, still more preferably 0.001 to 5 mm, still more preferably 0.001 to 4 mm, still more preferably 0.00. It is 001-3 mm, More preferably, it is 0.001-2 mm, More preferably, it is 0.001-1 mm, More preferably, it is 0.01-1 mm.
In addition, the minimum value of the width | variety of a linear notch part does not have a restriction | limiting, What is necessary is just to cut | disconnect. More preferably, as described above.
The size of the connecting portion, which is the interval between adjacent cut portions in the extending direction of the cut portion, is not limited, but the length is preferably 0.01 to 20 mm, more preferably 0.01 to 10 mm, More preferably, it is 0.1-10 mm, More preferably, it is 0.1-8 mm, More preferably, it is 0.1-7 mm, More preferably, it is 0.1-5 mm. The width is the same as the width of the cut portion.
The interval between the adjacent intermittent cuts (adjacent interval) is not limited, but is preferably 0.1 to 20 mm, more preferably 0.1 to 15 mm, and further preferably 0.1 to 10 mm. More preferably, it is 0.1-5 mm, More preferably, it is 0.5-5 mm.
When the cut portion is circular or elliptical, the above length is the diameter or long axis.

The extensibility of the present invention is expressed as an elongation ratio that is an extent of elongation, and the elongation ratio is not limited as long as it exceeds 1. More preferably, it is 1.01-10, More preferably, it is 1.01-5, More preferably, it is 1.01-4, More preferably, it is 1.01-3, More preferably, it is 1.01 It is -2, More preferably, it is 1.02-2, More preferably, it is 1.03-2, More preferably, it is 1.04-2, More preferably, it is 1.05-2.
Here, the extension ratio means a quotient obtained by dividing the length after extension by the length before extension. That is, the rate of elongation of the heating element = length after extension of the heating element / length before extension of the heating element.

If the shrinkage of the present invention is expressed by a shrinkage rate that is short, the shrinkage rate is not limited as long as it exceeds 1, but it is preferably 1.005 to 10 although it depends on the application. More preferably, it is 1.01-10, More preferably, it is 1.01-5, More preferably, it is 1.01-4, More preferably, it is 1.01-3, More preferably, it is 1. It is 01-2, More preferably, it is 1.02-2, More preferably, it is 1.03-2, More preferably, it is 1.04-2, More preferably, it is 1.05-2.
Here, the shrinkage rate means a quotient obtained by dividing the length at the time of extension by the length after removing the external force.
That is, the contraction rate of the heating element = the length when the heating element is extended / the length of the heating element after the external force is removed.

With the local ventilation material of the present invention, a space is formed in at least a part of the peripheral edge of the divided heat generating part by covering the heat generating part with the local ventilation material using the difference in height between the divided heat generating part and the dividing part. And it is a packaging material which provides an air pocket at least in part of the peripheral part of a division | segmentation heat_generation | fever part.
By providing the air reservoir between the divided heat generating portions, air permeability between the outside and the divided heat generating portions is adjusted, and a combined heat retaining effect is also provided. In addition, the divided heat generating parts, which are heat generating sources, are provided on the support at intervals, and the heat generating parts with different elevations are covered with a local ventilation material, the air permeability of the divided heat generating parts is adjusted, It can also be used to realize surface heat generation within a practical range. The local ventilation material and the support can be the packaging material used for the base material and the covering material, and have been conventionally disclosed or commercially available or used for known disposable warmers and heating elements. Any packaging material can be appropriately selected and used.

  The method for fixing the local ventilation material to the heat generating part and / or the heating element, the fixing agent such as an adhesive, the shape, and the state are not limited as long as an air pocket can be provided between at least some of the divided heat generating parts. .

The breathability of the local ventilation material is not limited as long as the ventilation of the heat generating portion can be adjusted, but is preferably lower than the breathability of the heat generating portion provided with the local ventilation material or the ventilation surface of the heating element body. Breathable materials such as porous films, non-woven fabrics, films and sheets having holes by perforation, and composites such as laminates including at least one of them as part of constituent members, non-breathable films, sheets and laminates containing them Useful is a perforated film, a perforated film, perforated sheets or perforated laminates containing them.
In addition, in the local area of the local ventilation material, a ventilation hole having a larger air permeability than the ventilation hole of the heating element body is provided in the local area of the local ventilation material to increase local ventilation, and the other areas are substantially non-ventilated. Alternatively, the air permeability may be kept lower than the air permeability of the ventilation surface of the divided heat generating portion, and the flow path and flow of a gas such as air may be controlled. Thereby, the heat insulation of a division | segmentation heat-emitting part and appropriate temperature maintenance can be performed.

The local ventilation material is not limited as long as it is a plastic film or sheet having a non-breathable region and a breathable region. However, the packaging material constituting the local breathing material has conventionally been a heating element or a chemical warmer (breathable storage bag ( Inner bags) and non-breathable storage bags (outer bags)) and the packaging materials used for the base materials, covering materials and outer bags described in the specification of the present invention can be used and selected as appropriate. do it. For example, as a non-breathable material, polyethylene, polypropylene, vinyl chloride, vinylidene chloride, polyester such as polyethylene terephthalate, films of various plastic materials such as nylon, KOP (vinylidene chloride coated biaxially stretched polypropylene film), etc. K coat (chlorinated) Vinylidene coat) film, vapor-deposited film (silicon oxide, aluminum oxide, silicon nitride, aluminum nitride, silicon oxynitride and other metal compounds such as oxygen and nitrogen, or films deposited with metal such as aluminum), nonwoven fabrics and various films As an example, a single layer such as a laminate or a laminated film or sheet containing these may be mentioned. Furthermore, PE / adhesive, PP / adhesive, PET / adhesive, PE / nonwoven fabric / breathable adhesive, PE / nonwoven fabric / PE / adhesive, PE / PET / M / PE / nonwoven fabric / breathable adhesive, Examples include PE / heat seal material, PE / nonwoven fabric / heat seal material, PE / nonwoven fabric / PE / heat seal material, PE / PET / M / PE / nonwoven fabric / heat seal material, and the like.
Here, PE is a polyethylene film, PP is a polypropylene film, PET is a polyethylene terephthalate film, M is a metal such as aluminum or silver, or a semiconductor or metal oxide such as silicon oxide, silicon oxynitride, silicon nitride, or aluminum oxide, or an acid. Nitride, a metal compound exhibiting nitride. As a local ventilation material, the laminated body of a nonwoven fabric and a film is mentioned as a preferable example.

  The ventilation blocking sheet covers at least the breathable portion of the local ventilation material, and is not particularly limited as long as it is non-breathable. The outer bag packaging material, the local ventilation material packaging material, or the disclosed or publicly known Non-breathable packaging materials such as non-breathable films and sheets used for chemical warmers and heating elements can be used. The film or sheet is adhered and bonded to the container in a peelable state by means such as an adhesive, but it is preferable to provide a handle (knob portion) so that it can be easily peeled off during use.

  In this way, the air blocking sheet is detachably bonded to the ventilation surface (breathable sheet) of the local ventilation material, so that air (oxygen) is allowed to enter the inside of the divided heat generating part from the ventilation surface during storage and transportation. It does not invade and can prevent heat generation during storage and transportation. On the other hand, since air permeability can be ensured by peeling the ventilation block sheet from the local ventilation material during use, heat can be generated by normal use. Therefore, it becomes possible to ship without individually packaging each heating element as in the past, and several heating elements can be packaged together in one packaging bag, so-called outer bag can be omitted. . In other words, even if one of them is used when packaged together, it can be stored as if each heating element was individually packaged, and without being concerned about its storage condition such as sealing after opening. Can be used.

  In the heating element of the present invention, it is conceivable to form a section heating part with a breathable wrapping material and a non-breathable wrapping material in advance and provide a local ventilation material, and then bond a ventilation blocking sheet together. First, a breathable sheet and a ventilation blocking sheet are laminated to prepare a composite sheet in advance, and then the composite sheet and a non-breathable sheet are bonded together to produce a heating element provided with the ventilation blocking sheet. Also good.

“Folding” in the present invention means that at least a part of the folded portion is in contact with the region of the non-folded portion.
The ratio (A / B) of the width (A) of the section corresponding to the folded portion of the heating element and the sum (B) of the thicknesses of the section heating sections on both sides thereof is 0.5 or more, preferably 0. 0.5-10, more preferably 0.55-10, even more preferably 0.6-10, even more preferably 0.7-10, and even more preferably 1.0-10. More preferably, it is 1.2-10, More preferably, it is 1.2-5, More preferably, it is 1.2-3, More preferably, it is 2-3.
Moreover, when the width of the division part which corresponds to the folding part of the said heat generating body differs in the one surface side and the other one surface side, a narrow (short) width is made into the width (A) of a division part.

In addition, since two or more heating elements are enclosed in a folded state, even if the heating element is large, the heating element is very compact when packaged, has excellent portability, and has little change over time in the heat generation characteristics. Compared with the disposable body warmer, the number of members can be reduced, the cost can be reduced, the waste generated during use can be reduced, and there are also advantages of being friendly to the global environment.
Moreover, you may enclose the division | segmentation heat generating part heat generating body of this invention, especially a stripe heat generating body in the outer bag in the wound state.

  The notch provided in the seal portion of the outer bag can be provided in any number and in any position except for the inside of the seal portion on the side where the heat generating body is housed. Examples include notches that are in contact with the outside of the seal portion and notches that are not in contact with either the inside or the outside of the seal portion. The notch (V notch, U notch, I notch, etc.) allows the user to easily tear and open the outer bag.

  For the outer bag, a so-called easy peel film may be used that, when sealed, is in a soft-adhesive state where the sealed portion can be easily peeled off. As the packaging sheet made of the easy peel film, a known material such as a non-breathable synthetic resin film coated with a styrene resin having an easy peel property can be appropriately used.

  A non-breathable packaging material can be used as the packaging material of the outer bag that houses the heating element. The non-breathable packaging material or a packaging material used for a conventionally known outer bag of a heating element can be used.

The adhesive constituting the outer temporary attachment layer used for the outer temporary attachment is not limited as long as the adhesive force is weak and the heating element can be retained in the packaging material until the folding operation is completed. A re-peelable weak pressure-sensitive adhesive is an example. In some cases, an adhesive having weak adhesive strength may be used instead of the re-peelable weak adhesive. Specific examples include hot-melt adhesives, emulsion-based adhesives such as acrylic adhesives, and solvent-based adhesives such as rubber-based adhesives. In particular, a compound having a high glass transition temperature is preferable, an acrylic compound having a high ratio of the acrylic acid component, and a rubber compound having a high melting point tackifier are preferable.
Moreover, the adhesive used for the removable sticky note sold as Post-it / Post-it (trade name of 3M Co., Ltd.) can also be used.
Also, hot melt adhesives, especially hot melt adhesives (styrene adhesives such as SIS, acrylic adhesives, polypropylene adhesives, polyethylene adhesives, ethylene-propylene copolymer adhesives, etc.) preferable. Known or publicly available adhesives or adhesives with weak adhesive strength or adhesive strength can also be used.

  The adhesive strength is not limited as long as the heating element and the packaging material can be pasted until the folding work is finished, but 180 degree peel strength (JIS Z-0237) is preferable. 0.01 g / 25 mm to 0.9 kg / 25 mm, more preferably 0.01 g / 25 mm to 0.5 kg / 25 mm, still more preferably 0.01 g / 25 mm to 0.3 kg / 25 mm, More preferably, it is 0.01g / 25mm-0.1kg / 25mm, More preferably, it is 0.1g / 25mm-100g / 25mm.

  Moreover, there is no restriction | limiting in particular also about the application | coating thickness of the said adhesive, Preferably it is 3 mm or less, More preferably, it is 0.1 micrometer-3 mm, More preferably, it is 0.1 micrometer-2 mm, More preferably, it is 0.00. 1 μm to 1 mm.

  The heating element of the present invention is manufactured using a heating composition molded body obtained by molding a surplus water heating composition having an excess water value of 0.5 to 80, and at least a part thereof has air permeability. The entire surface of the heating element may be air permeable or partially air permeable. The exothermic composition compact also includes a exothermic composition compact that is a compressed exothermic composition compact.

The method for producing a heating element of the present invention is a heating element that performs quality control including determination of the composition of the exothermic composition by using the excess water value of the exothermic composition as an index by the method for defining the excess water value of the exothermic composition. There is no limitation as long as it is a production method, but the quality control using the method for determining the excess water value of the exothermic composition is performed, and the exothermic composition molded body obtained by molding the moldable excess water exothermic composition by molding is used as a base material. An example is a method of producing a heating element by laminating on it, covering with a covering material, and sealing the peripheral edge of the heating composition molded body. A moldable exothermic composition is formed into a desired shape by a mold-through molding method using a punching die that is a through-hole or a casting mold method using a casting mold having a recess, and the molded body is laminated on a substrate or the like. In this method, a heating element is manufactured by covering and sealing another base material. In this case, a magnet may be used. The heat generating composition can be accommodated in a mold by a combination of a smooth filling blade and a magnet, and the molded body can be removed from the mold by a magnet. Molding of the exothermic composition molded body and production of the heating element become easier.
The quality control of the present invention is not limited as long as it is a production method using the surplus water value of the exothermic composition.

  If an example of the manufacturing method of the preferable heat generating body of this invention is given, the exothermic composition molded object which shape | molded the exothermic composition whose surplus water value will be 0.5-80 on a substantially planar packaging material will be laminated | stacked, Further, there is a method of laminating other packaging materials, sealing the peripheral edge of the exothermic composition molded body, and cutting off excess portions to form a heating element.

  In the case of producing a heat generating composition molded body by a mold forming method such as the die-through forming method or the casting method, the surplus water value of the heat generating composition is 0.5 to 80. The exothermic composition in the mold was dehydrated, laminated on the packaging material, covered with a coating material, and the periphery of the exothermic composition molded body was used with a pressure-sensitive (crimp) seal or heat seal layer using an adhesive. The heating element may be manufactured by sealing with heat sealing or the like. In addition, the molded exothermic composition molded body is laminated on a water-absorbent packaging material, covered with a covering material, and the periphery of the exothermic composition molded body is used with a pressure-sensitive (pressure-bonding) seal or a heat seal layer. The heating element may be manufactured by sealing with a heat seal or the like. Further, the molded exothermic composition molded body is laminated on the nonwoven fabric, and further covered with the nonwoven fabric, pressed with a press roll, dried with hot air (nitrogen or air, etc.) at 30 to 100 ° C., cut, and then based on the sheet. You may manufacture by laminating | stacking on a material, covering with a coating | covering material, and sealing the peripheral part of a heat-generating composition molded object.

The mold-through molding method uses a punching die, molds a moldable excess water exothermic composition, laminates a punching exothermic composition molded body on a substrate, and forms a exothermic composition molded body. It is a manufacturing method. The punching die is a die having a through hole having a desired shape and thickness. A drum-shaped forming device in which the through hole is provided on the rotating surface of a hollow drum-shaped rotating body, a chain conveyor-shaped forming device using a chain conveyor-shaped rotating body in which a plurality of sheet-shaped molds having the through hole are provided, and the like Is given as an example.
As a continuous manufacturing method, a rotary punching die is used, and a molding machine for laminating a die-shaped exothermic composition molded body on a long base material and covering it with a long covering material, Using the rotary sealer that can seal the peripheral part of the part to be separated and the base material and the covering material (heat seal, pressure seal, thermocompression seal, etc.), the peripheral part of the exothermic composition molded body through the sealer As an example, a continuous manufacturing method in which a necessary portion of the sorting portion is heat-sealed and sealed.

The casting molding method is a method for producing a heating composition molded body by filling a moldable excess water heating composition into a casting mold having a recess and laminating the molded heating composition molding on a substrate. is there. The punching die is a die having a recess having a desired shape and thickness. An example of the exothermic composition molded body manufacturing apparatus in which a concave portion is provided on the outer surface of a hollow drum-shaped rotating body is an example.
The continuous production method includes a molding machine for laminating a heat generating composition molded body on a long base material by filling the recess with a hollow drum-shaped rotating body and transferring it to the base material, and a long covering material. Using a rotary sealer that can cover the target section and seal the periphery of the base material and the covering material (heat seal, pressure seal, thermocompression seal, etc.), the exothermic composition through the seal An example is a continuous production method in which the peripheral portions of the molded body and the necessary portions of the divided portions are heat sealed and sealed.

  The exothermic composition or exothermic composition molded body of the present invention may be compressed. The exothermic composition compact includes a compressed exothermic composition compact. Compression is not limited, but in-mold compression and out-of-mold compression are examples.

  The in-mold compression is to compress the exothermic composition in the mold with a flexible rubber roll or a compression mold similar to the accommodating section while the exothermic composition exists in the mold accommodating section. Yes, as the compression ratio, the thickness of the compressed body (the exothermic composition compressed body) is not limited, but is preferably 50 to 99.5% of the mold thickness, more preferably 50 to 95%, still more preferably. Is from 55 to 95%, more preferably from 60 to 95%, still more preferably from 70 to 90%. The pressure at the time of pressurization is not limited as long as the moldable exothermic composition can be compressed to a predetermined thickness. The compression means used for compression molding is not limited, but examples include a flat plate and roll having elasticity such as rubber, and a flat plate and roll having a pushing portion that can be inserted into a mold cavity.

  The out-of-mold compression is to compress the exothermic composition molded body with a roll or the like after the exothermic composition is separated from the mold and becomes a exothermic composition molded body. This is usually performed after the exothermic composition molded body is covered with a covering material and / or a covering material, but it may not be covered. There is no restriction on the pressure during pressurization. There is no restriction on the compression rate.

Hereinafter, although embodiment of the heat generating body of this invention is described based on FIGS. 6-24, it is not restrict | limited only to description by this figure.
The surplus water value of the exothermic composition of this description is 0.5-80.
Since the loop stiffness of each storage body of the divided heat generating portion heating element group of the present description and the heat generating portion storage body composed of the divided heat generating portion and the dividing portion is 700 mN / cm or less, the divided heat generating portion heat generating element of the present description Each heating element in the group has a soft feel. More preferably, the minimum bending resistance of the heating element is 70 mm or less.
The classification heating element heating element group in this description includes a rigid and soft heating element, a stripe heating element, a detachable heating element, an expansion heating element, a band heating element, a tunnel ventilation heating element, a drug heating element, a detachable drug heating element, and an eye temperature. A heating element, a face temperature heating element, a nasal temperature heating element, an outer temporary folding heating element with an outer bag, and the like are included.

FIG. 6A is a plan view showing an example of the rectangular heating element 17A.
FIG. 6B is a cross-sectional view taken along the line AA.
This is a rectangular heating element 17A having one heating part 31 having a seal part 34 at the periphery. The exothermic composition molded body 30 is sandwiched between a non-breathable base material 36 and a breathable coating material 35 provided with a solid acrylic pressure-sensitive adhesive layer 39 with a separator 43, and the periphery is sealed. Yes. Usually, a rectangular heating element 17A is pasted on the outside of the garment to transfer heat to the body through the garment. .

FIG. 7A is a plan view showing an example of the warm iron heating element 18.
FIG.7 (b) is sectional drawing of the same BB.
This is the hot-air heating element 18 having a circular planar shape with one heating part 31 having a seal part 34 in the peripheral part.
This is a circular hot-air heating element 18 in which a heating composition molded body 30 is sandwiched between a base material 36 provided with an adhesive layer 39 with a separator 43 and a breathable coating material 35. The hot-spring heating element 18 having a diameter of 20 mm is attached to the body's pot and used so as to transfer heat to the body.
FIG. 7C is a cross-sectional view showing another example of the hot-air heater 18.
A heating element heating element in which a heat generating composition molded body 30 is sandwiched between a base material 36 provided with a pressure-sensitive adhesive layer 39 with a separator 43 and a breathable coating material 35, and a space 41 having a diameter of about 8 mm is provided in the center of the pressure-sensitive adhesive layer 39. 18.
When maintaining a normal temperature, the air-permeable packaging material may be used, but when a particularly high temperature is desired, it is preferable to use a packaging material such as a highly air-permeable covering material than the air-permeability.
The air permeability is a gas permeability according to the Gurley type gas permeability measured by JIS P8117, preferably 9 sec / 300 cc or less, more preferably 5 sec / 300 cc or less, and further preferably 3 sec / 300 cc or less. More preferably, it is 2 sec / 300 cc or less.
In addition, since the gas permeability according to the Gurley type gas permeability is about 0.4 sec / 300 cc, the measurement limit is about 0.4 sec / 300 cc. / (Cm ² · sec) or less, more preferably 1 to 40 cc / (cm ² · sec), still more preferably 1 to 20 cc / (cm ² · sec).

FIG. 8A is a plan view showing an example of the foot temperature heating element 19.
FIG. 8B is a cross-sectional view taken along the line CC.
This is a full-foot-shaped foot temperature heating element 19 which has a seal portion 34 around one heat generating portion 31 and does not have intermittent cuts. A laminate of a non-slip material 38 made of polyethylene / corrugated liner paper (core material 37) / a substrate 36 made of polyethylene and a laminate of a porous film and a non-woven fabric made of nylon are used. The seal between the polyethylene base material 36 and the porous film of the covering material 35 sandwiching the exothermic composition molded body 30 is a heat seal, but may be a pressure-bonded seal using an adhesive. The minimum bending resistance of the foot temperature heating element 19 is 200 mm or more.
Although not shown, a base material obtained by laminating a covering material 35 provided with a breathable pressure-sensitive adhesive layer 40 on the porous film side by a melt blow method or the like and a heat generating composition molded body 30 formed by molding an excess water heat generating composition 29 is laminated. It may be covered with the material 36 and the peripheral portion of the heat generating composition molded body 30 may be pressure-bonded and sealed to form a full-foot-shaped foot temperature heating element 19. Further, a base material 36, which is a laminate of a non-slip material 38 made of polyethylene and a non-water-absorbing packaging material such as a non-water-absorbing corrugated cardboard liner paper, is used, and a heating composition molded body is formed on the non-water-absorbing packaging material side. 30, and further covered with a non-water-absorbing coating material 35. Similarly, the peripheral edge of the heat generating composition molded body 30 is pressure-bonded and sealed through the breathable pressure-sensitive adhesive layer 40. It may be 19.
FIG. 8C is a plan view showing another example of the foot temperature heating element 19.
Two divided heat generating portions 32 and 32 are formed so as to be separated at the substantially central portion of the foot temperature heating element 19, and a perforation 47 is provided at substantially the central portion of the divided portion 33 without the exothermic composition molded body 30. This is a foldable foot temperature heating element 19. The seal between the polyethylene base material 36 and the porous film of the covering material 35 is a pressure-bonding seal using an adhesive. When the foot temperature heating element 19 is folded and stored in the outer bag 57, it becomes small and easy to carry, and the outer bag 57 can be saved.
The peripheral edge of the exothermic composition molded body 30 in the foot temperature heating element 19 is a pressure-bonding seal using an adhesive, a heat seal using a heat seal material, or a temporary heat that is temporarily sealed with an adhesive and then heat-sealed. It can be used by selecting from the seal.

FIG. 9A is a plan view showing an example of the rigid / soft heating element 21.
Twelve elliptical segment heat generating portions 32 are provided at predetermined intervals in the vertical and horizontal directions with the segment portion 33 interposed therebetween.
FIG. 9B is a plan view showing another example of the rigid and soft heating element 21.
In the dumbbell shape, six rectangular divided heat generating portions 32 are provided at predetermined intervals with the dividing portion 33 interposed therebetween.
9A and 9B has a loop stiffness of 700 mN / cm or less, and thus the rigid and soft heating element 21 has flexibility with a good touch feeling. The minimum bending resistance of the bending-soft heating element 21 is 70 mm or less, and the minimum bending resistance change is 0 or less. The heating element does not change in the direction in which the flexibility deteriorates before and after the heat generation.

FIG. 10A is a plan view showing an example of the stripe heating element 22.
FIG.10 (b) is sectional drawing of the DD.
Six rectangular segment heating parts 32 are stripe heating elements 22 having a minimum bending resistance of 50 mm or less provided in a stripe shape with the segment part 33 as an interval.
On the base material 36, six exothermic composition molded bodies 30 having a rectangular planar shape are laminated at intervals and covered with a breathable coating material 35. The peripheral portion of the heating element 22 is heat-sealed, and an adhesive layer 39 made of a SIS hot-melt adhesive is provided on a base material 36 that is a non-ventilated surface, and a separator 43 is provided thereon. The SIS hot melt adhesive may be replaced with an acrylic adhesive.
A stripe heating element 22 may be affixed to the outside of the garment to transfer heat to the body through the garment. The body adhesive layer 39 may be used to attach to the body and transfer heat to the body. Further, both sides may be made to be air permeable and water vapor generated from the heating element may be applied to the body side.
FIG. 10C is a cross-sectional view showing another example of the stripe heating element 22.
The stripe heating element 22 having a minimum bending resistance of 50 mm or less, in which a mesh-like breathable pressure-sensitive adhesive layer 40 by a melt blow method with a separator 43 is provided on the ventilation surface side. A ventilation surface side is attached to the inside of clothes such as underwear, and heat is transmitted to the body through the non-ventilation surface of the stripe heating element 22. Further, both sides may be made to be air permeable and water vapor generated from the heating element may be applied to the body side.
Alternatively, the stripe heating element 22 may be attached to the outside of the clothes to transfer heat to the body through the clothes.
FIG. 10D is a cross-sectional view showing another example of the stripe heating element 22.
The stripe heating element 22 has a minimum bending resistance of 50 mm or less without the adhesive layer 39. The side ventilation part 62 of the segment heating part and the top 63 of the segment heating part are air permeable.
Although not shown, both sides of the stripe heating element 22 are made air permeable, and the air permeable pressure-sensitive adhesive layer 40 or the partially non-air permeable pressure-sensitive adhesive layer 39 is applied to the body side, Water vapor generated from the stripe heating element 22 may be applied to the side.

FIG. 11A is a plan view showing an example of the detachable heating element 23.
Eight divided heat generating portions 32 are provided in stripes, and perforated portions 47 that can be cut by hand are provided in each divided portion 33.
Further, the perforation 47 is in contact with the side of the heating element 23, but the perforation 47 may not be in contact with the side of the heating element 23 as long as it can be cut by hand.
FIG.11 (b) is a top view which shows an example of the small heat generating body 23A.
This small heating element 23A is a separated small heating element 23A having a seal portion 34 in the peripheral part of the section heating part 32, which is the smallest unit of the separable heating element 23 in FIG.
FIG. 11C is a plan view showing another example of the detachable heating element 23.
A total of 16 divided heat generating portions (width 8 mm × length 50 mm) 32 are provided at the top and bottom with a separation portion 33 having a width of 9 mm as an interval.
A perforation 47 that can be cut by hand is provided at substantially the center of each section 33, and an end portion of the perforation 47 and a V notch 49 provided in the peripheral portion of the heating element 23 are in contact with each other. Yes.
FIG. 11D is a plan view showing another example of the small heating element 23A.
This small heating element 23A is a separated small heating element 23A having a seal portion 34 in the periphery of the section heating part 32, which is the smallest unit of the separable heating element 23 in FIG.
11 (a) and 11 (c) can be separated into a desired small heating element 23A along an arbitrary perforation 47, and several small small heating elements can be separated if desired. The area can be warmed simultaneously.

FIG. 12A is a plan view showing an example of the expansion / contraction heating element 24.
FIG. 12B is a cross-sectional view taken along line E-E.
Six divided heat generating portions 32 are provided in stripes with a separation portion 33 having a width of 7 mm as an interval, and the middle division portion 33 is formed with three rows of staggered cuts 48 at 1.5 mm intervals. Yes. A part of the alternate cuts 48 is in contact with the peripheral portion of the expandable heating element 24. The exothermic composition molded body 30 is sandwiched between the non-breathable base material 36 provided with the pressure-sensitive adhesive layer 39 with the separator 43 and the breathable coating material 35, and the periphery is sealed. The pressure-sensitive adhesive layer 39 is a layer having a thickness of about 50 μm made of a styrene-isoprene-styrene pressure-sensitive adhesive. Since the alternate cuts 48 are reversibly deformed in a substantially mesh shape in the longitudinal direction, which is a direction orthogonal to the direction of the alternate cuts 48, the expansion / contraction heating element 24 can be deformed in the longitudinal direction, that is, can be expanded / contracted. It is also useful to increase the stretchability of the stretchable heating element 24 by providing alternate cuts 48 in the other section 33.

FIG. 13A is a plan view showing another example of the expansion / contraction heating element 24.
Six sets of two divided heat generating portions 32 are provided in a striped manner with a short-side divided portion (width 10 mm) 33 interposed therebetween, and three rows of staggered cuts are formed in each short-side divided portion 33. 48 is provided, and at least a part of the end of the alternate cut 48 is in contact with a V notch 49 provided in the peripheral portion of the heating element 24.
FIG. 13B is a plan view showing another example of the expansion / contraction heating element 24.
In the longitudinal direction, four divided heat generating portions 32 are provided with intervals of the dividing portions 33 having a width of 10 mm, and three rows of staggered cuts 48 are formed at intervals of 1.5 mm in each of the divided portions 33. Is in contact with the peripheral portion of the expansion / contraction heating element 24. Although not shown, the non-breathable substrate 36 is provided with an adhesive layer 39 with a separator 43.

FIG. 14 is a plan view showing an example of the band heating element 25.
A heat generating portion 31 having six divided heat generating portions 32 is fixed to a substantially central portion of the band 56, and hook and loop fasteners 42, 42, 42 are provided in the vicinity of both ends of the band 56 with different installation surfaces. The band 56 is provided with alternate cuts 48 and 48 with the heat generating portion 31 interposed therebetween. The band 56 is a non-extensible replaceable holding member (for example, 10 to 100 cm in length × 1 to 15 cm in width) made of a laminate of a nonwoven fabric and an elastomer film. The heat generating portion 31 may be fixed at an arbitrary position of the band 56. In accordance with this position, alternate cuts 48 are provided.
In this example, the band heating element 25 is provided with stretchability by staggered cuts 48, but a stretchable material in which a stretchable material such as a polymer mesh (scrim) or rubber is sandwiched between the packaging materials is used for the band 56. May be.

FIG. 15A is a plan view showing an example of the tunnel ventilation heat generator 26.
FIG. 15B is a cross-sectional view taken along the line F-F.
Six exothermic composition molded bodies 30 are sandwiched between the covering material 35 and the base material 36, and the local ventilation material 51 is provided so as to cover the ventilation surface side of the six section heating portions 32, in the longitudinal direction. Are fixed by fixing parts (adhesive layer, adhesive layer, heat seal layer, etc.) 50, 50 made of an adhesive or the like. A substantial space 52 is formed by the local ventilation member 51, the side ventilation part 62 of the divided heat generating part, and the dividing part 33, and air is taken in from the ventilation holes 53 at both ends. An adhesive layer 39 with a separator 43 is provided on the substrate 36 side.
If desired, the local ventilation member 51 may be provided with a ventilation hole 53 by perforation or the like.
Moreover, although not shown in figure, the local ventilation material 51 may be fixed to the at least one part of the top part 63 of one or more division heat generating parts via the fixing | fixed part 50 which consists of adhesives. In addition, a group of two divided heat generating portions 32, one divided portion 33, and one or more space portions 52 are used as a set, and in the divided portion 33 outside the divided heat generating portion 32, the local ventilation member 51 and the divided portion 33 are disposed. May be fixed through a fixing portion 50 made of an adhesive, an adhesive, or the like, and a perforated 47 that can be cut by hand is provided at almost the center thereof, and the detachable medicine heating element 27A connected by the section 33 may be used. .

FIG. 16A is a partial enlarged cross-sectional view showing an example of the vicinity of the space 52 of the tunnel ventilation heat generator 26.
The exothermic composition molded body 30 is sandwiched between the base material 36 having the pressure-sensitive adhesive layer 39 with the separator 43 and the air-permeable covering material 35, and the local air-permeable material 51 is not fixed to the dividing portion 33. The top portion 63 is covered, and the partition portion 33 is provided with one space portion 52 composed of the side ventilation portion 62 of the partition heating portion, the partition portion 33 and the local ventilation member 51.
FIG. 16B is a partial enlarged cross-sectional view showing another example of the vicinity of the space 52 of the tunnel ventilation heat generator 26.
A local ventilation member 51 is fixed to a substantially central portion of the partitioning portion 33 of the tunnel ventilation heating element 26 via a fixing portion 50 made of an adhesive, and two space portions 52 are provided in one partitioning portion 33. .

FIG. 17A is a plan view showing an example of the drug heating element 27.
FIG. 17B is a cross-sectional view taken along the line GG.
The exothermic composition molded body 30 is sandwiched between the non-breathable base material 36 and the breathable coating material 35 provided with the pressure-sensitive adhesive layer 39 with the separator 43, the peripheral portion is sealed, and further, the divided heat generation portion The local ventilation member 51 having a vent hole 53 perforated on the concavo-convex surface composed of 32 and the partitioning portion 33 is attached to the entire periphery of the drug heating element 27 via a fixing portion (adhesive layer, adhesive layer, heat seal layer, etc.) 50 A substantial space 52 is formed by the local ventilation member 51, the side ventilation portion 62 of the segment heat generation unit, and the sorting portion 33, and air is taken in from the vent hole 53 of the local ventilation member 51. The minimum bending resistance of the drug heating element 27 is 50 mm or less. The local ventilation material 51 is a packaging material provided with a ventilation hole 53 perforated in a non-breathable packaging material. Further, the local ventilation member 51 may be fixed to at least a part of the apex portion 63 of one or more divided heat generating portions via the fixing portion 50. The non-breathable substrate 36 is provided with a separator 43 and an adhesive layer 39 containing a functional substance.
FIG. 17C is a plan view showing another example of the drug heating element 27.
A non-breathable ventilation blocking sheet 54 with a handle 55 is detachably bonded to the ventilation hole 53 of the local ventilation member 51.
FIG. 17D is a cross-sectional view showing another example of the drug heating element 27.
This is a drug heating element 27 in which the adhesive layer 39 and the separator 43 are not provided.
The functional substance is contained in at least a part of the exposed portion of the drug heating element 27.
In the drug heating element 27, since the base material 36 and the local ventilation material 51 are impermeable, the interaction between the exothermic composition 30 and the exposed portion containing the functional substance can be prevented, and the respective functions are maintained. it can. Further, by closing the ventilation hole 53 with the ventilation blocking sheet 54, the interaction between the exothermic composition molded body 30 and the exposed portion of the drug heating element 27 can be prevented, and the drug heating element 27 that can withstand long-term storage can be obtained.

FIG. 18A is a plan view showing another example of the drug heating element 27.
FIG. 18B is a cross-sectional view taken along the line HH. The exothermic composition molded body 30 is sandwiched between the non-breathable base material 36 and the breathable coating material 35, the peripheral portion is sealed, and further, the pressure-sensitive adhesive layer 39 (breathable pressure-sensitive adhesive) is formed on the coating material 35 side. A local ventilation member 51 having a perforated ventilation hole 53 provided with an agent layer 40 is fixed on the entire periphery of the drug heating element 27 via a fixing unit 50. The vent hole 53 is not provided with the pressure-sensitive adhesive layer 39 that at least blocks the ventilation. A substantial space 52 is formed by the local ventilation member 51, the side ventilation portion 62 of the section heat generating portion, and the partition portion 33, and air is taken in from the vent hole 53 of the local ventilation member 51. The functional substance is contained on the surface of the base material 36 of the drug heating element 27. The separator 43 is preferably provided on the pressure-sensitive adhesive layer 39 (or the air-permeable pressure-sensitive adhesive layer 40).

FIG. 19A is a plan view showing an example of the separable medicine heating element 27A.
FIG. 19B is a cross-sectional view taken along the line II.
A local ventilation member 51 having a vent hole 53 perforated on a concavo-convex surface composed of a section heating section 32 and a section section 33 is separable via a fixing section (adhesive layer, adhesive layer, heat seal layer, etc.) 50. 27A is fixed at all peripheral portions, and every other section 33 and local ventilation material 51 are fixed via fixing portions (adhesive layer, adhesive layer, heat seal layer, etc.) 50. The top 63 of the section heat generating part is covered with the local ventilation material 51. A perforated 47 which can be cut by hand is provided at a substantially central portion of the region where the partitioning portion 33 and the local ventilation member 51 are fixed, and the two partition heating portions 32 and one partitioning portion 33 are taken as a set. Three sets are connected. Each set has a substantial space portion 52 formed by a local ventilation member 51 with a vent hole 53, a side ventilation portion 62 of a segmental heat generating portion, and a segmentation portion 33, and air is passed through the vent hole 53 of the local ventilation member 51. Incorporate.
The end portion of the perforated 47 that can be cut by hand is in contact with the peripheral portion of the detachable medicine heating element 27A, but may not be in contact with the peripheral portion of the heating element 27A if it can be cut by hand. A pressure-sensitive adhesive layer 39 with a separator 43 and containing a functional substance is provided on the substrate 36 side. The perforations 47 may or may not penetrate the separator 43 as desired. Moreover, you may provide the V notch 49 etc. in the edge part of the perforated perforation 47 in the peripheral part of the separable medicine heat generating body 27A as needed.
FIG. 19C is a cross-sectional view showing an example of the small medicine heating element 27B.
This is a small medicine heating element 27 </ b> B in which the separable medicine heating element 27 </ b> A is separated by a perforated perforation 47.
The exothermic composition molded body 30 is sandwiched between a base material 36 having a pressure-sensitive adhesive layer 39 with a separator 43 and a gas-permeable covering material 35, and a side ventilation part 62, a division part 33, and a local ventilation material with a ventilation hole 53. 51 is a small medicine heating element 27 </ b> B having a space portion 52 composed of 51.
At the time of use, the separable medicine heating element 27A can be divided into a plurality of small medicine heating elements 27B and pasted to a desired place as desired.

FIG. 20A is a plan view showing an example of the eye temperature heating element 66.
FIG. 20B is a cross-sectional view taken along the line JJ.
The exothermic composition molded body 30 is sandwiched between the non-breathable base material 36 and the breathable covering material 35, the peripheral portion is sealed, and furthermore, the ear hook portions 73, 73 with holes 74, 74 are provided at both ends. Are fixed through fixing portions 50 and 50 sealed at both ends of the heating element body, a V notch 49 is provided on the upper side of the central portion, and the lower side corresponding to the peripheral edge of the nose is a curved surface. Three divided heat generating portions 32, 32, 32 are provided on both sides thereof. Furthermore, the eye temperature heating element 66 of the present invention may be cut into the central portion such as by replacing the V notch 49 with a large V-shaped notch or by making a curved surface, and processing such as a notch or a curved surface may be added.
FIG. 20C is a plan view showing another example of the eye temperature heating element 66.
The eye side 67 of the eye temperature heating element 66 is shown. Holes 74 provided with hand-cuttable cuts (perforations 47) at the center are provided through fixing portions 50, 50 in which end portions of the ear hook portions 73, 73 with 74 are sealed at both ends of the heating element body. The V notch 49 is provided on the upper side of the central part, and the lower side corresponding to the peripheral part of the nose is a curved surface.
FIG. 20D is a cross-sectional view showing another example of the eye temperature heating element 66.
Texture materials 68 and 68 made of non-woven fabric are provided on both sides of the eye temperature heating element 66. Space portions 52 and 52 are formed between the sorting portions 33 and 33 and the texture materials 68 and 68. At least one of the texture materials 68 may be replaced with the local ventilation material 51 or the local ventilation material 51 with the texture material 68. For example, the texture material 68 on the eye side 67 may be replaced with the local ventilation material 51 or the local ventilation material 51 with the texture material 68.
FIG. 20E is a plan view showing an example of the face temperature heating element 69.
This is a mask-shaped face temperature heating element 69. Ear hook rubbers 75 and 75 which are ear hooks 73 are provided at both ends, the central section 33 is wide, and three section heat generating sections 32, 32 and 32 are provided on both sides. The ear hook rubber 75, 75 may be replaced with an ear hook string 75.
FIG. 20F is a perspective view showing another example of the face temperature heating element 69.
This is an assembled face temperature heating element 69. The segment heating element heating element 20 such as the stripe heating element 22 is inserted and used in a mask 70 having ear rubbers 75 and 75 at both ends and provided with a heating element accommodating part 71 supported by the heating element holding part 72. To do.
If the heating element having the structure of the tunnel ventilation heating element 26 or the drug heating element 27 is used as the segment heating part heating element 20, it can be used at a more appropriate temperature.
FIG. 20 (g) is a plan view showing an example of the nasal heating element 69A.
An integrated nasal heating element 69A is provided with a heating section 31 having one section heating section 32 on each side of the central section 33, and can heat at least areas corresponding to both sides of the nose.
If the heat generating part 31 is a heat generating part having the structure of the tunnel ventilation heat generating element 26 or the drug heat generating element 27, it can be used at a more appropriate temperature.
FIG. 20 (h) is a plan view showing another example of the tunnel ventilation heating element 26 for the face temperature heating element 69 and the nose temperature heating element 69A.
The local ventilation member 51 covers the two divided heat generating portions 32 and 32 provided with the central dividing portion 33 interposed therebetween, and is fixed to both end portions of the tunnel vent heat generating body 26 via fixing portions 50 and 50. .

FIG. 21A is a plan view showing another example of the rigid / soft heating element 21 before being folded. The central section 33 has a section 33 having a width larger than half the sum of the heights of the section heat generating sections 32 and 32 on both sides.
FIG. 21B is a plan view showing an example of the outer temporary folding folding heating element 28 with an outer bag.
FIG.21 (c) is sectional drawing of the same KK.
A heating element 60 in which the rigid and soft heating element 21 is folded in two at the central section 33 with the breathable covering material 35 side inward is attached to the outside through a part of the outer bag 57 and the outer temporary attachment layer 58. The outer temporary folding folding heating element 28 with an outer bag is temporarily attached and enclosed in an outer bag 57 which is a non-breathable storage body. An I notch 49 is provided in the seal portion 59 of the outer bag 57 and is not in contact with the peripheral portion of the seal portion 59.
FIG. 21D is a plan view showing another example of the outer temporary folding folded heating element 28 with an outer bag.
A part of the outer bag 57 is temporarily attached to the outer temporary bonding layer 58 and the folded heating element 60 is enclosed in the outer bag 57, and an I notch 49 is provided in the seal portion 59 of the outer bag 57, One end thereof is provided in contact with the outer peripheral portion of the seal portion 59 of the outer bag 57. Although not shown, the I notches 49 may be replaced with alternate cuts 48. You may provide in the one part area | region in the seal part 59 of one side of the outer bag 57, or all the areas.

FIG. 22 is a cross-sectional view showing the flexibility of the rigid / soft heating element 21.
The rigid and soft heating element 21 having six divided heat generating portions protruding from the support base 61 is bent from the middle and is in contact with the oblique side of the support base 61, and exhibits high flexibility.

FIG. 23 is a cross-sectional view showing the non-flexibility of the single heating element heating element 17.
The single heating element heating element 17 which is a commercially available sticker protruding from the support base 61 extends in the protruding direction, does not contact the oblique sides of the support base 61, and is not flexible.

FIG. 24A is a plan view showing an example of staggered cuts 48 that are a kind of intermittent cuts 44. Three rows of cuts 45 are staggered cuts 48 in which the cuts 45 are longer than the connecting parts 46.
FIG. 24B is a plan view showing an example of a perforation 47 that is a kind of intermittent cuts 44. The cut portion 45 is a perforation 47 longer than the joint portion 46. It is preferable for hand cutting.
FIG. 24C is a plan view showing another example of a perforation 47 which is a kind of intermittent cuts 44.
The cut portion 45 and the connecting portion 46 are an example of a perforation 47 having the same length.

In the physical properties of the heating element of the present invention, a plurality of storage bodies and heating elements manufactured using the same exothermic composition and the same packaging material are regarded as one group, and the group has the same physical properties. . Based on this, the physical properties of the individual storage bodies and heating elements are defined. That is, when a plurality of physical properties cannot be measured and collected from the same sample, a plurality of samples are taken out from one group, measured, and the physical property obtained by combining them is set as the physical property of each sample belonging to the group.
The “manufactured using the same heating composition and the same packaging material” includes a plurality of heating elements having the same manufacturing number. The heating elements with the same serial number have the same physical properties and characteristics.

The plurality of heating elements having the same production number is
1. 1. A heating element having the same production number selected from the group consisting of two or more heating elements. 2. A heating element selected from the group consisting of two or more heating elements which are not assigned a serial number and are manufactured using the same raw material and the same packaging material. When using an excess water exothermic composition having an excess water value exceeding 0, the production number of the heating element containing the excess water exothermic composition is adopted.

  The production number means a number, a symbol or the like indicating a clue for producing the heating element. Production number given to any of the heating element, the outer bag of the heating element accommodated in the outer bag, and the collective bag having two or more heating elements such as pillow packaging and boxes, or the corresponding number, symbol, It has lot number, production lot, barcode, etc., and information on production year, month, production machine, etc. There are no restrictions as long as a plurality of heating elements are collected and the numbers and symbols are clear. Examples include S10 2437, 7B08, 510264, and the like.

As an example, taking a sample group with the same serial number as an example, physical property measurement will be described. Select the first sample, second sample, and third sample from the sample group, and the first sample is The surplus water value of the exothermic composition, the rising temperature rise rate, and the loop stiffness of the container are measured.
The second sample measures the loop stiffness of the container after the end of heat generation. The third sample measures the minimum bending resistance before heat generation and the minimum bending resistance after heat generation. However, the minimum bending resistance before heat generation may be measured with the third sample, and the minimum bending resistance after heat generation may be measured with the fourth sample.
As the number of samples, the number of first samples is 1 or more, preferably 2 or more, and more preferably 3 or more. The number of second samples is 1 or more, preferably 2 or more, more preferably 3 or more.
It is preferable that the arithmetic mean of the number of samples is adopted as the value of each sample such as the surplus water value, loop stiffness and minimum bending resistance.

  The thickness of the heating element is measured by measuring three or more points using a caliper and obtaining an average value.

  The end of “open the end of the divided heat generating portion of the heating element after the end of heat generation” indicates at least one of one end or both ends of the divided heat generating portion.

1. Loop stiffness measurement
A circular loop with a loop length of 50 mm is formed near the center of a strip-shaped sample having a width of 0.5 to 1 cm, preferably 1 cm, and a loop length of 50 mm or more, and the load applied when the circular loop is pushed in by 5 mm from the outside is measured per sample width. The value displayed in mN / cm is defined as loop stiffness.
If necessary, it is converted with 1 gF≈9.8 mN.
That is,
Loop stiffness [mN / cm] = measurement loop stiffness [mN] / measurement sample width [cm]
The number of measurement points is 1 point or more, preferably 2 points or more, and more preferably 3 points or more.

2. Sample for measurement of loop stiffness 1) Open the end of the segment heating element of the sample heating element of the heating element container before heat generation, take out the water-containing heat generating composition, and classify heat generation that is the non-sealed area of the remaining container A section of the storage body cut in the longitudinal direction of the region including the seal portion at the peripheral portion of the heating element in a direction that passes through the section portion that is the partial region and the seal region substantially orthogonally is used as a sample.
2) Sample of storage body for heating element after completion of heat generation When the heating element is heated in a normal atmosphere and the temperature of the heating element falls below 37 ° C, it is assumed that the use has ended, and the heating element after the end of heat generation Open the end of the segment heat generating part, take out the heat generating composition, and pass the heat generating element in a direction passing through the section heat generating area which is the non-sealed area of the remaining container and the section which is the seal area almost orthogonally. A section of the storage body cut in the longitudinal direction of the region including the peripheral seal portion is taken as a sample.
3) Sample of section of heating element before heat generation A section cut in the longitudinal direction of the region including the seal portion around the heating element along the section of the heating element before heat generation is used as a sample. It may be a section of the storage body of the heating element before heat generation.
4) Sample of the section of the heating element after the end of heat generation A sample cut in the longitudinal direction of the region including the seal part at the periphery of the heating element along the section of the heating element after the end of heat generation is used as a sample. . It may be a section of the storage body of the heating element after the end of heat generation.

In measuring the loop stiffness of the sample,
1) Marking may be performed with a magic pen, a felt pen, or the like on a loop forming portion having a loop length of 50 mm.
2) When the fixing means such as the adhesive layer is provided, the loop stiffness is measured with the fixing means inside, except for the separator.
3) When the length of the sample is short, it may be measured by adding a fixing film or the like to the sample. For example, measurement may be performed by adding a fixing film or the like to a sample having a loop length of 50 mm.
4) If the heating element or the storage body has a local ventilation material, a texture material, a temperature buffer material, etc., remove them and cut out the sample. However, when they are fixed to the heating element or the storage body and the heating element or the storage body breaks when they are removed, samples are prepared by removing them as much as possible. This also applies to samples for measuring maximum tensile strength and elongation at break.

When the sample for measuring the maximum tensile strength and breaking elongation of the heating element or storage section is cut out from the heating element or storage section, the breaking elongation of the section is extended along the longitudinal direction of the section. The value of elongation at break is used.
The width and length of the sample for measuring the maximum tensile strength and breaking elongation of the section are not limited as long as the maximum tensile strength and breaking elongation can be measured. A sample may be prepared and measured according to the size of the section. The width is preferably 20 mm or less and the length is preferably 200 mm or less.

  The apparatus for measuring the loop stiffness is not limited as long as the loop stiffness can be measured, but examples include a loop stiffness tester manufactured by Toyo Seiki Co., Ltd., a loop stiffness tester manufactured by Tester Sangyo Co., Ltd., and the like.

The tensile test of the present invention is performed according to JIS L1096. For example, the wrapping material can be subjected to a tensile force sufficient to remove all looseness without applying a load to the load cell at the end of the sample cut to a width of 8 mm and a length of 80 mm, and the distance between chucks is 20 mm. Adjusted and installed in the device. Next, after the temperature of the sample is stabilized at a desired test temperature (for example, 25 ° C., 80 ° C., etc.), the apparatus is operated, and the crosshead speed is increased to about 50 mm / min.
The measurement sample is preferably 3 to 20 mm in width and 30 to 200 mm in length, and the distance between chucks is preferably 10 to 100 mm.
1) Maximum tensile strength (g / mm)
The maximum value of the tensile strength of the sample is read from the chart, divided by the sample width, and the value converted to mm unit is the maximum tensile strength.
2) Elongation at break
The elongation at the time when the sample breaks is read from the chart and defined as the breaking elongation.
That is,
P (%) = 100 × (LB−LS) / LS
P: Elongation at break
LB: Length of sample at break (distance between chucks at break)
LS: Length of sample at installation (distance between chucks at installation)
In addition, when the width of the sample is narrow, it may be fixed to a mount or the like and tested.

The rising temperature rising rate measuring method of the present invention uses an exothermic composition or an exothermic composition molded body, is airless, has an ambient temperature of 23 to 30 ° C., and preferably 23 ° C. Measure in a state where it can come into contact with When the exothermic composition or the exothermic composition molded body has heat, the measurement is preferably performed after the exothermic composition or exothermic composition molded body is brought to the ambient temperature. The exothermic temperature is measured using a data collector, and the temperature at the start of the test (Ts) and the temperature 5 minutes after the start of the test (Te) are measured at a measurement timing of 2 seconds. A thermometer can also be used.
1) A magnet is provided in the vicinity of the center of the back surface of a plastic support plate (thickness 5 mm × length 600 mm × width 600 mm) such as vinyl chloride of a support base with legs so as to cover the shape of the punched hole of the mold.
2) Place the bulb of the temperature sensor or thermometer on the center of the support plate.
3) Support plate through the adhesive layer so that the center of the polyethylene film with a thickness of 25 μm × length 250 mm × width 200 mm with an adhesive layer of about 80 μm is at the sphere of the sensor or thermometer Paste to.
4) On the center of the polyethylene film, place a template plate of length 250 mm x width 200 mm with a hole of length 80 mm x width 50 mm x height 4 mm, place a sample near the hole and place the filling plate Move along the template surface to fill the sample with the sample. Next, temperature measurement is started except for the magnet under the support plate.
2. In the case of the exothermic composition molded body, 1) to 3) are the same as in the case of the exothermic composition.
4) Place the exothermic composition molded body on the center of the polyethylene film, and start temperature measurement. When the exothermic composition molded body is easily broken, it is broken and measured in the same manner as the exothermic composition. The exothermic composition to be measured is preferably measured after the exothermic composition is sealed in a non-breathable bag such as an outer bag and placed in an environment of 23 ° C. and the exothermic composition is in that environment.
3. Rise temperature rise rate The rise temperature rise rate is the difference (Te−Ts) between the temperature (Ts) at the start of heat generation and the temperature (Te) 5 minutes after the start of the test.

In the heat generation performance test of the present invention, a heating element is used, and measurement is performed in a state where the sample can be in contact with air at the time of measurement under the condition of no wind and ambient temperature of 23 to 30 ° C., preferably 23 ° C. It is preferable to make the measurement after bringing the heating element to ambient temperature. The heat generation temperature is measured using a data collector. A thermometer can also be used.
1) Lay four towel cloths on a plastic support plate (thickness 5 mm × length 600 mm × width 600 mm) such as vinyl chloride on a support base with legs.
2) Place the bulb of the temperature sensor or thermometer on the center of the towel cloth.
3) Place the non-ventilated surface of the heating element toward the bulb of the temperature sensor or thermometer, and place the center of the heating element at the bulb of the temperature sensor or thermometer.
4) Overlay four towel cloths on it.
5) Start temperature measurement.

In the present invention, the bending resistance indicates rigidity (harness, stiffness) or flexibility, and conforms to the JIS L 1096A method (45 ° cantilever method) except that the heating element itself is used as a sample. Is. That is, one side of the heating element is placed on the scale base line on a smooth horizontal table having a slope with a 45 ° (degree) at one end. Next, the heating element is slid gently in the direction of the slope by an appropriate method, and when the central point of one end of the heating element contacts the slope, the position of the other end is read on the scale. The bending resistance is indicated by the length (mm) that the heating element has moved. Each of the five heating elements is measured and an average value is obtained. However, it is assumed that the heating unit containing the heat generating composition of the heating element has a moving direction distance of 5 mm or more and a distance in the direction orthogonal to the moving direction of 20 mm or more remains on the horizontal table. In addition, the length of the heating element placed on the horizontal table crosses the region where the exothermic composition exists, or linearly crosses the region where the exothermic composition exists and the region where the exothermic composition does not exist. Suppose you are.
1) Measurement calculation method of bending resistance of heating element having pressure-sensitive adhesive layer (1) The surface of the heating element that does not have the pressure-sensitive adhesive layer is placed on a horizontal table and measured.
(2) If the side of the heating element that has the adhesive layer faces the side of the horizontal base and the adhesive layer cannot be measured on the horizontal base, attach the cover to the adhesive layer and cover the adhesive layer side with the cover. Place on a horizontal table and measure.
(3) The cover covering the pressure-sensitive adhesive layer of the heating element with the pressure-sensitive adhesive layer has a plasticity film having a bending resistance of 30 mm or less, preferably 20 mm or less, more preferably 10 mm or less, more preferably 5 mm or less, and / or Alternatively, a plastic film having a thickness of 50 μm or less, preferably 25 μm or less, more preferably 1 μm to 25 μm, still more preferably 1 μm to 15 μm, and even more preferably 1 μm to 10 μm, or plastic that can be wrinkled lightly. Use a soft film such as film. Examples include wrap films such as polyethylene film, vinylidene chloride film, vinyl chloride film, and roll-shaped plastic bags.
2) Measurement and calculation method of minimum bending resistance of the present invention For one heating element, one surface is placed on a horizontal base and the bending resistance in each direction is measured. Next, the other surface is placed on a horizontal table and measured in the same manner to obtain each bending resistance. The smallest value of the bending resistance is set as the minimum bending resistance.
3) As for the bending resistance of the packaging material such as the base material and the covering material, a short 100 mm × longitudinal 200 mm test piece is prepared, and the bending resistance in the longitudinal direction (200 mm direction) is adopted. When a test piece of the above size cannot be produced from the packaging material, a test piece having a size as close to the test piece as possible is produced and measured.

The minimum bending resistance difference of the present invention is a difference between the minimum bending resistance before heat generation and the bending resistance after heat generation in the direction of minimum bending resistance before heat generation.
That is,
Minimum bending resistance difference = (Minimum bending resistance before heat generation)-(Minimum bending resistance before heat generation)
Bending after heat generation)
It is.
The bending resistance in the direction of the minimum bending resistance after the end of heat generation is determined by causing the obtained heating element to generate heat in a normal atmosphere and assuming that the use is completed when the temperature of the heating element is lower than 37 ° C. This is the bending resistance of the heating element after the end of heating in the same direction as the previous minimum bending resistance.

The change in the minimum bending resistance of the present invention is a value indicating the ratio of the minimum bending resistance after the end of heat generation to the heating element or the heating portion before the heat generation. The minimum bending resistance change is calculated by the following equation.
Minimum bending resistance change (%) = ((B−A) / A) × 100
A: Minimum bending resistance (mm) of the heating element before heat generation
B: The minimum bending resistance (mm) of the heating element after completion of heat generation
1) Ignore heat generation during measurement and measure immediately.
2) The obtained heating element is left in air in a 20 ° C. environment without wind to generate heat. When the heating is finished and the temperature of the heating element becomes equal to the environmental temperature, the heating is finished. The bending resistance of the heating element in the direction showing the minimum bending resistance of the heating element before heating is measured to obtain the minimum bending resistance of the heating element after the end of heating.
Or, it is attached to the body or clothes to generate heat, and after the end of heat generation, measure the bending resistance of the heating element in the direction indicating the minimum bending resistance of the heating element before heat generation, and generate heat after the end of heat generation. Let it be the minimum bending resistance of the body.
3) The measurement direction of the minimum bending resistance of the heating element before heat generation and the measurement direction of the minimum bending resistance of the heating element after completion of heat generation are the same measurement direction.
4) When the minimum bending resistance (A) of the heating element before the heat generation cannot be measured and the minimum bending resistance (B) after the heating is completed can be measured, the minimum bending resistance (B) of the heating element after the heating is completed ) Is the longest length of the heating element in the same direction as the direction having the minimum bending resistance (A).

The minimum bending resistance of the present invention is the bending resistance with respect to the minimum bending resistance of the heating element or the heating portion and the total length in the direction, and is calculated by the following equation.
Minimum flexural modulus (%) = (A / L) × 100
A: Minimum bending resistance of heating element or heating part
L: Total length of the heating element or heating part in the direction showing the minimum bending resistance

The maximum bending resistance ratio of the present invention is the ratio of the direction having the minimum bending resistance of the heating element to the bending resistance of the heating element relative to the minimum bending resistance of the heating element. This is an index indicating handleability, and the larger the value, the better the handleability. That is, if it has a structure that is easy to bend in one direction and is difficult to bend in a direction perpendicular to it, directionality occurs in the bending, and the direction that is difficult to bend becomes a column, and the heating element is easily attached to a human body or the like. The maximum bending resistance ratio indicates the ease of handling of the heating element, and the larger the value, the easier the handling.
Maximum stiffness ratio = (C / A)
A: Minimum bending resistance of heating element or heating part
C: Bending softness in a direction perpendicular to the direction having the minimum bending softness
However, if the maximum bending resistance is too large to be measured, the maximum length in that direction shall be the bending resistance.

  The measurement method is the same when obtaining arbitrary bending resistance and bending resistance change. In the description of each item of the minimum bending resistance, the minimum bending resistance change, and the minimum bending resistance ratio, “Minimum” You can remove the characters. In the case of the bending resistance, the character “maximum” of the maximum bending resistance may be removed.

  The said fixing | fixed part is an area | region fixed to a packaging material when manufacturing a heat generating body, and is comprised from an adhesive layer, an adhesion layer, a heat seal layer etc. or those arbitrary mixed layers, and those combinations.

  The adhesive layer is composed of an adhesive, a pressure-sensitive adhesive, a heat seal material, etc., and when the heating element is manufactured, the packaging material and the packaging material, and / or the packaging material is fixed to the heating element or bonded together. There is no limitation as long as the packaging material can be fixed. Examples of the constituent material include an adhesive such as a cyan adhesive, a pressure-sensitive adhesive described in the present specification, and a heat seal material.

  The pressure-sensitive adhesive layer is composed of a pressure-sensitive adhesive, and is a fixing layer such as a packaging material and a packaging material, and / or a packaging material fixed to the heating element or bonded together when manufacturing the heating element, There is no limitation as long as the packaging material can be fixed. An example of the constituent material is the pressure-sensitive adhesive described in the present specification.

  The mixed layer is a layer having at least two or more selected from the constituent components of an adhesive layer, an adhesive layer, and a heat seal layer.

  As the constituent material of the adhesive layer, the pressure-sensitive adhesive layer, and the temporary adhesive layer, those conventionally used in chemical warmers, heating elements, and poultices, and those technically disclosed can be used.

EXAMPLES Next, although an Example demonstrates this invention concretely, this invention is not limited by these.
For the measurement of the excess water value, filter paper No. manufactured by Nakamura Science Co., Ltd. was used as a filter medium. 2 or filter paper No. 2 manufactured by Toyo Filter Paper Co., Ltd. 2 was used. In addition, the loop stiffness of the container was adjusted by adjusting the number and width of the packaging material, the sealing layer such as the heat sealing layer, the pressure-sensitive adhesive layer, and the section.

Example 1
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) 8 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed to prepare a surplus water exothermic composition. It sealed in the outer bag which is a non-breathable container, and it adjusted to 20 degreeC in 20 degreeC environment. Next, the excess water exothermic composition was taken out from the outer bag, and the excess water value of the excess water exothermic composition was determined as shown in FIGS.
Place circular filter paper (filter paper No. 2 manufactured by Nakamura Science and Technology Co., Ltd.) (Fig. 1) on which eight lines are written at 45 ° intervals radially from the center point on the stainless steel plate. Is placed on a mold plate of length 150 mm × width 100 mm having a hollow cylindrical hole of diameter 30 mm × height 20 mm, the exothermic composition is placed in the vicinity of the hollow cylindrical hole, and the pushing plate is placed on the mold plate. In order to prevent exothermic reaction from taking place during the measurement, and further scraping the exothermic composition along the template surface, while pushing the exothermic composition into the hollow cylindrical hole. A non-water-absorbing 70 μm polyethylene film is placed so as to cover the hole, and a stainless steel flat plate having a thickness of 5 mm × length of 150 mm × width of 150 mm is placed thereon, and after holding for 5 minutes, the filter paper is taken out and radially Along the line written on the water or The permeation locus of the solution is taken as the distance from the circumference that is the edge of the hole of the hollow cylinder to the permeation tip, and the distance is read in mm units from each line, and each of the eight values (a, b, c, d read) is read. , E, f, g, h) are measured surplus water values, and the arithmetic average of the eight measured surplus water values (mm) is divided by the height (mm) of the hollow cylindrical hole of the template, Further, a value multiplied by 100 was obtained. A value obtained by averaging three values measured from the same exothermic composition was used as an excess water value of the exothermic composition. The excess water value of the excess water exothermic composition was 25, and the rising temperature rising rate was 10 ° C./5 minutes.
A laminate of a nylon nonwoven fabric and a polyethylene porous film was used as a breathable coating material, and a polyethylene film having an adhesive layer with a separator was used as a non-breathable substrate. The breathability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method. The excess water exothermic exothermic composition is molded through a mold, the exothermic composition molded body is laminated on the substrate, the covering material is further covered, the peripheral edge of the exothermic composition molded body is heat-sealed, and the seal width A plurality of heating elements having a length of 125 mm and a width of 95 mm having a heating part of 10 mm in length and 79 mm in width were prepared. Further, the heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and attached to the underwear, and a heat generation test was conducted. However, the test became warm soon after the start of the test, and the warm time lasted for 8 hours or more. Thus, if the method for defining the excess water value of the exothermic composition of the present invention is used, the amount of excess water in the exothermic composition can be easily defined. The excess water exothermic composition was an exothermic composition with excellent moldability.

(Comparative Example 1)
Excess water exothermic composition having an excess water value of 100 mixed with 11% saline in the same manner as in Example 1 except for 8.0 parts by weight of the water-absorbing polymer (particle size of 300 μm or less) in Example 1. It was used. The rising temperature rising rate of the excess water exothermic composition was 0 ° C./5 minutes. A plurality of heating elements were prepared in the same manner as in Example 1 using the surplus water heating composition. Further, the heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and subjected to a heat generation test. However, the heating did not become warm, the time for warming was very slow, and the time was kept low.

(Comparative Example 2)
Except that sodium carboxymethylcellulose in Example 1 was changed to 4.0 parts by weight, 11% saline was mixed and a hydrous exothermic composition having an excess water value of 25 was used in the same manner as in Example 1. The rising temperature rising rate of the excess water exothermic composition was 0 ° C./5 minutes. A plurality of heating elements were prepared in the same manner as in Example 1 using the surplus water heating composition. Further, the heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and subjected to a heat generation test. However, the heating did not become warm, the time for warming was very slow, and the time was kept low.

(Example 2)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) 5 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water heating composition.
The surplus water value of the surplus water-containing exothermic composition was 30, and the rising temperature rising rate was 8 ° C./5 minutes. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate of a nylon nonwoven fabric and a polyethylene porous film was used as a breathable coating material, and a polyethylene film having an adhesive layer with a separator was used as a non-breathable substrate. The breathability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method.
A exothermic composition molded body obtained by molding the surplus water-containing exothermic composition through a die having a thickness of 2 mm and having a punching hole having a length of 107 mm and a width of 77 mm was formed on the base material having a length of 150 mm and a width of 120 mm. Laminated on the polyethylene film surface. Cover the porous film and the copolymer film so that the surfaces of the porous film and the copolymer film overlap each other, and heat seal and cut the peripheral edge of the exothermic composition molded body with a width of 8 mm, the seal width is 8 mm, and the length is 1009 mm. A plurality of heating elements having a length of 125 mm and a width of 95 mm, each having a heat generating part having a width of 79 mm, was produced.
The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and attached to the underwear, and a heat generation test was conducted.

(Example 3)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) 0 part by weight, 0.5 part by weight of slaked lime, 0.7 part by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water heating composition.
The surplus water value of the surplus water-containing exothermic composition was 20, and the temperature rising rate was 8 ° C./5 minutes. The excess water value is the filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
Laminate of corrugated liner paper with non-water-absorbing treatment and non-slip treatment made of polyethylene with a laminate of porous film and nylon non-woven fabric provided with a breathable adhesive layer on the porous film side by melt blow method Was used as a substrate. The breathability of the coating material was 900 g / (m ² · day) in terms of moisture permeability by the Lissy method. On a corrugated liner paper in which the exothermic composition molded body obtained by molding the surplus water-containing exothermic composition through a mold using a mold having a pair of all-foot-shaped through-holes and subjected to non-water-absorbing treatment of the base material Further, the coating material is laminated so that the breathable pressure-sensitive adhesive layer side of the covering material faces it, and the peripheral edge of the heat-generating composition molded body is pressure-bonded and sealed. Thus, a pair of full-foot-shaped foot temperature heating elements having a maximum length of 220 mm were produced. The surplus water exothermic composition was an exothermic composition excellent in moldability so that the exothermic composition molded body having a shape of a full-leg shape could be molded. The breathability of the coating material was 900 g / (m ² · day) in terms of moisture permeability by the Lissy method. Further, the foot temperature heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the foot temperature heating element was taken out from the outer bag and used, but the foot temperature heating element did not curl in the shoe, and was very convenient for foot temperature use. The minimum bending resistance of the foot temperature generator exceeds 220 mm, which is not measurable, and is consistent with the fact that the foot temperature heating element does not curl during use and reliably plays a role for foot temperature.

Example 4
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) 0 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water exothermic composition. The surplus water value of the excess water exothermic composition was 26, and the rising rate was 2 ° C / 5 minutes.
A laminate of a nylon nonwoven fabric and a polyethylene porous film was used as a breathable coating material, and a polyethylene film having an adhesive layer with a separator was used as a non-breathable substrate.
A heat-generating composition molded body obtained by die-molding using a 2 mm-thick mold having six through-holes was laminated on the polyethylene film surface of the base material, and the porous film and copolymer film surfaces were superposed on each other. Cover the covering material so that the peripheral edge of the heat-generating composition molded body is heat-sealed, cut, the segmented heat generating part is 77 mm long × 12 mm wide, and the section is 77 mm long × 10 mm wide, Six divided heat generating portions were provided at intervals with the divided portions as an interval, and a plurality of heat generating elements having a length of 138 mm and a width of 93 mm were produced. The breathability of the covering material was 400 by the water permeability by the Lissy method. The excess water value is the filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define. Further, the heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and attached to the underwear, and a heat generation test was conducted. However, the test became warm soon after the start of the test, and the warm time lasted for 8 hours or more. Thus, if the method for defining the excess water value of the exothermic composition of the present invention is used, the amount of excess water in the exothermic composition can be easily defined. Further, as many as six pieces of 77 mm long × 12 mm wide segmented heat generating portions were molded at an interval of 10 mm, and the surplus water exothermic composition was an exothermic composition with excellent moldability. .

(Example 5)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) 0 part by weight, 0.5 part by weight of slaked lime, 0.7 part by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water heating composition.
The surplus water value of the surplus water-containing exothermic composition was 30, and the rising temperature rising rate was 8 ° C./5 minutes. The surplus water value is obtained from Toyo Filter Paper Co., Ltd. 2 (circular) was used to define.
A laminate of a nylon nonwoven fabric and a polyethylene porous film was used as a breathable coating material, and a polyethylene film having an adhesive layer with a separator was used as a non-breathable substrate. The breathability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method. The breathability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Using a 2.5 mm thick mold having 8 through holes, the exothermic composition molded body obtained by molding the excess water exothermic composition through the mold was laminated on the polyethylene film surface of the substrate, Covering the covering material so that the porous film and the copolymer film face each other, heat-sealing the peripheral portion of the heat-generating composition molded body with a width of 8 mm, cutting, and having 8 section heat-generating portions, A plurality of heating elements each having a seal heating width of 8 mm, a length of 152 mm, and a width of 95 mm, each having a composite heating portion with a sorting portion having a length of 79 mm × width of 8 mm and a sorting heating portion having a length of 79 mm × width of 10 mm, were produced. The breathability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method. Some heating elements were also provided with perforations, which are intermittent cuts, in the middle of each section, so that they could be cut by hand. Further, these heating elements were sealed in an outer bag which is a non-breathable storage bag and left at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag, and the physical properties of the heating element without the perforation were measured. As a result, the physical property values are shown in FIG. Further, the loop stiffness of the storage body after cutting one end of each section heat generating portion of the heat generating body and taking out the heat generating composition was 98 mN / mm. Moreover, the bending resistance of the base material and the covering material was 55-60.
Further, the heating element was taken out from the outer bag and attached to the underwear, and a heat generation test was conducted. However, the heating element immediately became warm and the warm time lasted for 8 hours or more. It is a heating element with excellent flexibility. In addition, the heating elements provided with perforations can be easily separated, and the separated heating elements can be pasted and used at a plurality of desired locations, thereby enjoying the convenience that is not found in ordinary heating elements. The excess water exothermic composition was an exothermic composition with excellent moldability.

(Result 1)
Item: State, Value Heating element surface: Eight divided heating parts on both sides of the uneven surface Size: Length 152mm x Width 95mm
Heating section width: 10mm
Section width: 8mm
Minimum bending resistance (before heat generation): 40mm
Minimum bending resistance (after heat generation): 40
Change in minimum bending resistance: 0
Minimum bending resistance: 26
Maximum bending resistance ratio: 2.4
Flexibility: Yes
Thermal effect: Excellent

(Example 6)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) 5 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed to prepare a hydrous exothermic composition. The excess water value of the hydrous exothermic composition was 30, and the rising temperature rising rate was 8 ° C./5 minutes. The excess water value is the filter paper No. manufactured by Toyo Filter Paper Co., Ltd. 2 was used.
A laminate of a nylon nonwoven fabric and a polyethylene porous film was used as a breathable coating material, and a polyethylene film having an adhesive layer with a separator was used as a non-breathable substrate. The breathability of the coating material was 400 g / (m ² · 24 hr) in terms of moisture permeability by the Lissy method.
Using a 2 mm thick mold having 8 through-holes, the exothermic composition molded body obtained by molding the surplus water exothermic composition through a mold was laminated on the polyethylene film surface of the substrate, and further a polyethylene film The covering material is covered so that the surfaces overlap each other, the peripheral portion of the exothermic composition molded body is heat-sealed, cut, and has eight divided heat generating portions. The dividing portion is 79 mm long × 8 mm wide. A plurality of stripe heating elements having a heating part of 79 mm length × 10 mm width, a seal width of 8 mm, and a length of 152 mm × 95 mm width were prepared. The excess water exothermic composition was an exothermic composition excellent in moldability. The heating element was sealed in an outer bag which is a non-breathable storage bag and left at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and measured for physical properties. Results 2 show the physical property values. Further, the loop stiffness of the heating element storage body was 98 mN / cm, the maximum tensile strength at 25 ° C. of the central section was 140 g / mm width, and the elongation at break at 25 ° C. was 80%. . Next, a perforation that can be cut by hand was provided in the approximate center of each section. Furthermore, the exothermic test was carried out on the underwear, but it quickly became warm and the warm time lasted for more than 8 hours. It is a heating element with excellent flexibility.

(Result 2)
Item: State, physical properties Heating element surface: Eight divided heat generating parts on both sides uneven surface Size: Length 152mm x Width 95mm
Heating section width: 10mm
Section width: 8mm
Minimum bending resistance (before heat generation): 46mm
Minimum bending resistance (after heat generation): 46mm
Change in minimum bending resistance: 0
Minimum bending resistance: 30
Maximum stiffness ratio: 2.1
Flexibility: Yes
Thermal effect: Excellent

(Example 7)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) 5 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water heating composition.
The surplus water value of the surplus water-containing exothermic composition was 30, and the rising temperature rising rate was 8 ° C./5 minutes. The excess water value is the filter paper No. manufactured by Toyo Filter Paper Co., Ltd. 2 was used.
A laminate of a nylon nonwoven fabric and a polyethylene porous film was used as a breathable coating material, and a polyethylene film having an adhesive layer with a separator was used as a non-breathable substrate. The breathability of the covering material was 400 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Using a mold having six through-holes, the exothermic composition molded body obtained by molding the excess water exothermic composition through a mold was laminated on the polyethylene film surface of the substrate. The covering material is covered so that the polyethylene film surfaces are overlapped with each other, the peripheral portion of the exothermic composition molded body is heat-sealed, cut, and has six divided heat generating portions. Five stripe heating elements having a seal heating width of 8 mm, a length of 138 mm, and a width of 93 mm, each having a composite heat generating portion having a width of 10 mm and a section heat generating portion of 77 mm long × 12 mm wide, were produced. Further, this heating element was sealed in a non-breathable outer bag and left at room temperature for 24 hours. After 24 hours, the stripe heating element was taken out from the outer bag, one end of each section heating part of the heating element was cut, the heating composition was taken out, and the roof stiffness of the container was measured. The roof stiffness was 60 mN / mm. An exothermic test was performed on the underwear, but it quickly became warm and the warm time lasted more than 8 hours. Result 3 shows a comparison between a stripe heating element and a single heating part heating element.

(Result 3)
Heating element: Stripe heating element: Single heating element heating element
(Both sides uneven) (Commercially available body warmers)

Exothermic part type: 6 divisional exothermic parts: 1 single exothermic part
Size (length x width): 138 mm x 93 mm: 138 mm x 93 m
Heating element seal width: 8 mm: 8 mm
Heat generating part (length x width): 122 mm x 77 mm: 122 mm x 77 m
Heating section width: 12mm:-
Section width: 10 mm: −
Minimum bending resistance: 60mm: Cannot be measured without bending
(Before fever)
Minimum bending resistance: 48mm: Cannot be measured without bending
(After the end of fever)
Change in minimum bending resistance: −20: −
Minimum bending resistance: 43: −
Maximum bending resistance ratio: 1.6: −
Flexibility: Yes: None

The stripe heating element maintains flexibility from before the heat generation to after the heat generation, and it can be seen how excellent the flexibility and flexibility are.

(Example 8)
The uneven ventilation surface of the stripe heating element of the same type as in Example 7 is covered with a local ventilation material made of a polypropylene nonwoven fabric / polyethylene film having the same width as the length of the segmented heat generating portion, and is orthogonal to the length direction of the segmented heat generating portion. A tunnel heating element was prepared by fixing the both ends of the stripe heating element with an adhesive. A tunnel ventilation structure is provided in which both end portions of each partitioning portion become local ventilation holes, the partitioning portion region becomes a tunnel, and a wide-area ventilation portion in which a side surface of the partitioning heat generating portion has fine holes is formed.

  Attach a thermometer bulb to the center of the adhesive layer side of the tunnel ventilation heating element, place it on a plastic plate with a thickness of 5 mm, place four towel cloths on top of each other, and place the heating sheet on it. Then, four towel cloths were placed on top of each other, and the change in heat generation temperature was measured. The temperature of a commercially available flat-type disposable warmer with substantially the same moisture permeability on the ventilation surface rises to 70 ° C., whereas the tunnel ventilation heating element of this embodiment has a maximum temperature of 41 ° C., and The temperature was stably maintained for a long time. By providing the tunnel ventilation structure in this manner, the maximum temperature of heat generation can be suppressed, and the optimum temperature can be maintained for a long time without reaching 42 ° C., which is said to cause low temperature burns.

Example 9
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) 8 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed to prepare a surplus water exothermic composition.
It sealed in the outer bag which is a non-breathable container, and it adjusted to 20 degreeC in 20 degreeC environment. Next, the excess water exothermic composition was taken out from the outer bag, and the excess water value of the excess water exothermic composition was determined as shown in FIGS.
A circular filter paper (filter paper No. 2 manufactured by Toyo Filter Paper Co., Ltd.) (Fig. 1) on which eight lines are written at 45 ° intervals radially from the center point is placed on a stainless steel plate, and is placed at the center of the filter paper. A mold plate having a diameter of 30 mm and a height of 20 mm and a hollow cylindrical hole having a length of 150 mm and a width of 100 mm is placed, and the exothermic composition is placed in the vicinity of the hollow cylindrical hole, and the pushing plate is placed on the mold plate. To extrude the exothermic composition into the hollow cylindrical hole, scrape the exothermic composition along the template surface, and to prevent exothermic reaction from occurring during the measurement, A non-water-absorbing 70 μm polyethylene film is placed so as to cover the hole, and further, a stainless steel flat plate having a thickness of 5 mm × length of 150 mm × width of 150 mm is placed thereon, and after holding for 5 minutes, the filter paper is taken out and radially formed. Water or water soluble along the line written Is the distance from the circumference that is the edge of the hole in the hollow cylinder to the penetration tip, and the distance is read in mm from each line, and each of the eight values read (a, b, c, d, e, f, g, h) are measured surplus water values, the value (mm) obtained by arithmetically averaging the eight measured surplus water values is divided by the height (mm) of the hollow cylindrical hole of the template, and The value multiplied by 100 was determined. A value obtained by averaging three values measured from the same exothermic composition was used as an excess water value of the exothermic composition. The surplus water value of the surplus water-containing exothermic composition was 15, and the rising temperature rising rate was 1 ° C./5 minutes.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The breathability of the coating material was 600 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Using a 1.5 mm thick mold having six through holes, the exothermic composition molded body obtained by molding the excess water exothermic composition through a mold was laminated on the polyethylene film surface of the substrate, and polyethylene Covering the covering material so that the film surfaces are superposed on each other, heat-sealing the peripheral portion of the heat-generating composition molded body, cutting, and separating the six divided heat-generating parts as heat-seal areas as intervals, Provided at intervals, the segment heat generating part has a heat generating part of length 73 mm × width 15 mm, the partition part has a heat generating part of length 82 mm × width 5 mm, the peripheral seal width is 6 mm, and the heat generation is 127 mm long × 85 mm wide. Created multiple bodies. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was removed from the outer bag, and the roof stiffness of the heating element storage body was measured. The roof stiffness was 60 mN / mm. The exothermic body was attached to the underwear, and the exothermic test was conducted, but soon after the start of the test, the exothermic body became warm, flexible before and after use, and the warm time lasted for 8 hours or more. The excess water exothermic composition was an exothermic composition with excellent moldability.

(Example 10)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) 9 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare a surplus water exothermic composition. The excess water value of the excess water exothermic composition was 25, and the rising temperature rising rate was 7 ° C./5 minutes or more. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The air permeability of the covering material was 450 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Using a 1.5 mm thick mold having six through holes, the exothermic composition molded body obtained by molding the excess water exothermic composition through a mold was laminated on the polyethylene film surface of the substrate, and polyethylene Covering the covering material so that the film surfaces are superposed on each other, heat-sealing the peripheral portion of the heat-generating composition molded body, cutting, and separating the six divided heat-generating parts as heat-seal areas as intervals, Provided at intervals,
The segmented heat generating part is 77 mm long x 15 mm wide, the segmented part is 77 mm long x 5 mm wide, the peripheral seal width is 8 mm, and a plurality of rigid soft heating elements with a thickness of 1 mm x length of 131 mm x width of 93 mm Each was made. The excess water exothermic composition was an exothermic composition with excellent moldability. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and measured for physical properties.
The minimum bending resistance of the heating element was 46 mm, and the minimum bending resistance change was zero. At least flexibility and flexibility were maintained not only before the heat generation but also after the heat generation. Thereby, it can be seen how excellent the flexibility and flexibility of the heating element according to the present invention are. The loop stiffness of the heating element storage body was 98 mN / cm, and the total weight of the excess water heating composition of the heating element was 18 g.

(Comparative Example 3)
A plurality of heating elements were prepared in the same manner as in Example 10 except that the loop stiffness of the storage body was set to 1000 mN / cm.

(Comparative Example 4)
A plurality of heating elements were prepared in the same manner as in Comparative Example 2 except that the total weight of the hydrous exothermic composition was 54 g.

For the heating elements of Example 10, Comparative Example 3, and Comparative Example 4, the minimum bending resistance and use evaluation were performed. The usage evaluation method evaluated the feeling of use of the heating element by performing a monitor test with 10 panelists. The result shown in Result 4 was obtained.

Usability evaluation Good: Flexible, not stiff, smooth along the body, no resilience to return, feels soft when touched, and feels soft Soft and comfortable to use.
Defective: Inflexible, stiff, repulsive when trying to follow the body, feels firm when gripped by hand, feels hard and uncomfortable to use.

(Result 4)

Example: Exothermic composition: Loop: Minimum bending resistance: Evaluation of use Total weight Stiffness
(G) (mN / cm) (mm)

Example 10: 18: 98: 48: Good Comparative Example 3: 18: 1000: Unmeasurable: Defect Comparative Example 4: 54: 1000: 68: Defect

Thus, by comparing the heating element defined only by the minimum bending resistance that defines the flexibility and the heating element defined by the loop stiffness that defines the resilience and the flexibility,
1) A heating element using a storage body having a low loop stiffness as in Example 10 has good flexibility such as high flexibility and low resilience, and the warmed body has smoothness along the smoothness, There is practical flexibility as a heating element.
2) On the other hand, the heating element defined by only the minimum bending resistance as in Comparative Example 3 and Comparative Example 4 can keep the apparent flexibility low due to the total weight of the heating composition, but the resilience of the storage body , Alongside, and resilience of the heating element, the alongness cannot be specified, there is a resilience to return to the original when it is along the body, the section is not flexible, practically flexible as a heating element There is no sex.
3) Practical flexibility of a heating element having a plurality of section heating portions cannot be defined by the minimum bending resistance, and it is indispensable to define by loop stiffness.
As described above, the heating element of the present invention has practical flexibility such that there is no resilience when placed along a body to be heated, and the feeling of wearing and feel is good.

(Example 11)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) 1 part by weight, 0.5 part by weight of slaked lime, 0.7 part by weight of sodium sulfite and 11% saline were mixed to prepare an excess water exothermic composition. The surplus water value of the surplus water-containing exothermic composition was 30, and the rising temperature rising rate was 5 ° C./5 minutes. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The breathability of the coating material was 600 g / (m ² · day) in terms of moisture permeability by the Lissy method.
A heat-generating composition molded body obtained by die-molding using a 1.2 mm-thick mold having six through-holes is laminated on the polyethylene film surface of the substrate so that the polyethylene film surfaces overlap each other. The covering material is covered, the peripheral portion of the heat-generating composition molded body is heat-sealed, cut, and the six divided heat generating portions are provided at intervals with the divided portions being heat-sealing regions as intervals. A plurality of heating elements each having a heat generating portion having a length of 82 mm × width of 15 mm and a dividing portion having a length of 82 mm × width of 6 mm, a peripheral width of 6 mm, and a length of 127 mm × width of 94 mm were produced. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and measured for physical properties. The loop stiffness of the heating element storage body was 98 mN / cm. Also, the heating element was taken out from the outer bag, fixed to clothes with an adhesive layer, and subjected to a heat test, but the heating element was bent from the section and fixed tightly along the clothes, and immediately became warm. Warm time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 12)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) 0 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water exothermic composition. The surplus water value of the surplus water-containing exothermic composition was 10, and the rising temperature rising rate was 2 ° C./5 minutes. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The air permeability of the covering material was 450 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Using a 2.5 mm thick mold having six through-holes, the exothermic composition molded body obtained by molding the surplus water exothermic composition through the mold was laminated on the polyethylene film surface of the substrate, and a polyethylene film Cover the covering materials so that the surfaces overlap each other, heat-seal and cut the peripheral edge of the exothermic composition molded body, and set the six segment heat-generating parts as heat-seal areas as intervals. A heating element having a heating part of 82 mm × width of 15 mm, a heating part of 82 mm × width of 6 mm, and a sealing width of 6 mm in the peripheral part, 127 mm × 94 mm in width. Several were produced. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and measured for physical properties. The heating element storage body had a loop stiffness of 98 mN / cm, the maximum tensile strength at 25 ° C. of at least one section was 155 g / mm, and the elongation at break was 98%. Also, the heating element was taken out from the outer bag, fixed to clothes with an adhesive layer, and subjected to a heat test, but the heating element was bent from the section and fixed tightly along the clothes, and immediately became warm. Warm time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 13)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) 8 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare a surplus water heating composition. The surplus water value of the surplus water-containing exothermic composition was 10, and the rising temperature rising rate was 2 ° C./5 minutes. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The air permeability of the covering material was 450 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Using a 1.2 mm-thick mold having eight through holes, the exothermic composition molded body obtained by molding the surplus water exothermic composition through the mold was laminated on the polyethylene film surface of the substrate, and a polyethylene film Cover the covering material so that the surfaces overlap each other, heat-seal and cut the peripheral edge of the heat-generating composition molded body, and the interval between the eight divided heat-generating parts as heat-seal areas A heating element having a heating part of 82 mm in length x 12 mm in width and a heating part of 82 mm in length x 6 mm in width, a sealing width of 6 mm in the peripheral part, and 152 mm in length x 94 mm in width. Several were produced. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and measured for physical properties.
The heating element storage body had a loop stiffness of 98 mN / cm, the maximum tensile strength at 25 ° C. of at least one section was 155 g / mm, and the elongation at break was 98%. Also, the heating element was taken out from the outer bag, fixed to clothes with an adhesive layer, and subjected to a heat test, but the heating element was bent from the section and fixed tightly along the clothes, and immediately became warm. Warm time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 14)
100 parts by weight of iron powder (particle size 300 μm or less), 5.5 parts by weight of activated carbon (particle size 300 μm or less), 2.5 parts by weight of wood powder (particle size 150 μm or less), water-absorbing polymer (particle size 300 μm or less) 5 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water heating composition. The surplus water value of the surplus water-containing exothermic composition was 20, and the rising temperature rising rate was 6 ° C./5 minutes. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The breathability of the covering material was 290 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Using a 1.5 mm thick mold having six through holes, the exothermic composition molded body obtained by molding the surplus water exothermic composition through the mold was laminated on the polyethylene film surface of the substrate, and a polyethylene film Cover the covering materials so that the surfaces overlap each other, heat-seal and cut the peripheral edge of the exothermic composition molded body, and set the six segment heat-generating parts as heat-seal areas as intervals. A heating element having a heating part of 82 mm × width of 15 mm, a heating part of 82 mm × width of 6 mm, and a sealing width of 6 mm in the peripheral part, 127 mm × 94 mm in width. Several were produced. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and measured for physical properties.
The loop stiffness of the heating element storage body was 49 mN / cm, and the loop stiffness of one section was 88 mN / cm.
Also, the heating element was taken out from the outer bag, fixed to clothes with an adhesive layer, and subjected to a heat test, but the heating element was bent from the section and fixed tightly along the clothes, and immediately became warm. Warm time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 15)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) 8 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare a surplus water heating composition. The surplus water value of the surplus water-containing exothermic composition was 25, and the rising temperature rising rate was 6 ° C./5 minutes. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The breathability of the covering material was 300 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Using a 1.0 mm thick mold having six through-holes, the exothermic composition molded body obtained by molding the surplus water exothermic composition through the mold was laminated on the polyethylene film surface of the substrate, and the polyethylene film Cover the covering materials so that the surfaces overlap each other, heat-seal and cut the peripheral edge of the exothermic composition molded body, and set the six segment heat-generating parts as heat-seal areas as intervals. A heating element having a heating part of 82 mm × width of 15 mm, a heating part of 82 mm × width of 6 mm, and a sealing width of 6 mm in the peripheral part, 127 mm × 94 mm in width. Several were produced. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and measured for physical properties. The loop stiffness of the heating element storage body was 350 mN / cm. Also, the heating element was taken out from the outer bag and fixed to the waist with an adhesive layer, and a heat test was carried out, but the heating element was bent from the section and was fixed tightly along the waist, and immediately became warm. Warm time lasted more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 16)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.3 parts by weight, water-absorbing polymer (particle size 300 μm or less) 5 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water heating composition. The surplus water value of the surplus water-containing exothermic composition was 20, and the rising temperature rising rate was 6 ° C./5 minutes. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The breathability of the covering material was 300 g / (m ² · day) in terms of moisture permeability by the Lissy method.
A heat-generating composition molded body obtained by die-casting using a 1.5 mm thick mold having six through holes is laminated on the polyethylene film surface of the substrate so that the polyethylene film surfaces overlap each other. The covering material is covered, the peripheral portion of the heat-generating composition molded body is heat-sealed, cut, and the six divided heat generating portions are provided at intervals with the divided portions being heat-sealing regions as intervals. A plurality of heating elements each having a heat generating portion having a length of 82 mm × width of 15 mm and a dividing portion having a length of 82 mm × width of 6 mm, a peripheral width of 6 mm, and a length of 127 mm × width of 94 mm were produced. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and measured for physical properties. The heating element storage body had a loop stiffness of 95 mN / cm, and one section had a loop stiffness of 156 mN / cm.
In addition, the heating element was taken out from the outer bag and fixed to the clothes with the adhesive layer, and the heat generation test was performed, but the heating element was bent from the section, fixed tightly along the clothes, and immediately warmed. Warm time lasted over 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 17)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) 0 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water exothermic composition. The surplus water value of the surplus water-containing exothermic composition was 30, and the rising temperature rising rate was 6 ° C./5 minutes. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The breathability of the coating material was 600 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Using a 2.0 mm thick mold having six through holes, the exothermic composition molded body obtained by molding the surplus water exothermic composition through the mold was laminated on the polyethylene film surface of the substrate, and a polyethylene film Cover the covering material so that the surfaces overlap each other, heat seal the peripheral edge of the heat-generating composition molded body, and further provide a SIS-based air-permeable adhesive layer on the air-permeable surface side by a melt blow method, The separator is covered and cut, and the six segment heat generating parts are provided at intervals, with the segmented part being a heat seal area as an interval. A plurality of heating elements having a heat generating part with a width of 6 mm, a peripheral part with a seal width of 6 mm, and a length of 127 mm × width of 94 mm were produced. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. 24 hours later, the heating element is taken out from the outer bag, and the heating element including the divided heating part and the dividing part of the heating element and the surrounding seal area are cut out, and the loop stiffness of the storage body excluding the heating composition is removed. Was measured to obtain 80 mN / cm. Moreover, the minimum bending resistance was 48 mm, and the minimum bending resistance change was zero. Also, the heating element was taken out from the outer bag and fixed to the inside of the underwear with the breathable pressure-sensitive adhesive layer faced to the inside of the underwear, and a heat generation test was conducted. It was fixed tightly along the body, quickly warmed, and warmed up for more than 6 hours. The heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 18)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 7.0 parts by weight, wood powder (particle size 150 μm or less) 3.0 parts by weight, water-absorbing polymer (particle size 300 μm or less) 0 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water exothermic composition. The surplus water value of the surplus water-containing exothermic composition was 15, and the rising temperature rising rate was 6 ° C./5 minutes. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The breathability of the covering material was 300 g / (m ² · day) in terms of moisture permeability by the Lissy method.
Using a 0.5 mm thick mold having 10 through-holes, the exothermic composition molded body obtained by molding the surplus water exothermic composition through the mold was laminated on the polyethylene film surface of the substrate, and the polyethylene film Cover the covering material so that the surfaces overlap each other, heat seal the peripheral edge of the exothermic composition molded body, cut it, and set the 10 divided heat generating parts as the heat sealed area as the interval. An eye mask having a heating part of 60 mm long × 10 mm wide, a heating part of 60 mm long × 8 mm wide, and a peripheral seal width of 10 mm, length of 188 mm × 80 mm wide A plurality of shaped heating elements were made. Further, both ends of an ear hook made of a non-woven fabric that can be cut off at the center are attached to both ends in the longitudinal direction of the eye heating element through an adhesive, and an eye mask type eye heating element Several were produced. The excess water exothermic composition was an exothermic composition with excellent moldability. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag, and the loop stiffness of the container was measured in the same manner as in Example 16 to obtain 120 mN / cm. Further, the heating element was taken out from the outer bag, the breathable surface was turned to the eyes, and it was fixed to the eyes with the ear hooks so as to cover the eyes. The heating element was bent from the section, fixed tightly along the eyes, became warm immediately, and the warm time lasted for more than 6 hours.
The heating element was a heating element having excellent heat generation performance and excellent flexibility. The loop stiffness of the heating element storage body was 98 mN / cm. As the storage body, a heat generating portion area composed of a divided heat generating portion and a dividing portion was adopted.

(Example 19)
A local ventilation material composed of a two-layer laminate of air-through nonwoven fabric (texture) / polyethylene porous film in which three 2 mmφ perforations are provided at equal intervals on the entire ventilation surface of the heating element similar to Example 18. It covers so that the three perforations are arranged in each section, and is fixed to the peripheral part of the heating element through an adhesive layer (fixing part) made of an adhesive, and the moisture permeability is 5000 g / (m on the eye side. Heat generation at eye temperature in the same manner as in Example 18 except that a feel material composed of a three-layer laminate of spunbond nonwoven fabric (strength) / melt blown nonwoven fabric (breathable) / thermal bond nonwoven fabric (texture) exceeding ² · day) was provided. Several bodies were made. Further, this heating element was sealed in a non-breathable outer bag and left at room temperature for 24 hours. Thereafter, the heating element was taken out of the outer bag, and the breathable surface was turned to the eyes, and the eyes were fixed to the eyes so as to cover the eyes. The heating element was bent from the section, fixed tightly along the eyes, became warm immediately, and the warm time lasted for more than 6 hours. The eye temperature heating element was a heating element having excellent heat generation performance and excellent flexibility.

(Example 20)
Iron powder (particle size 300 μm or less) 100 parts by weight, activated carbon (particle size 300 μm or less) 5.5 parts by weight, wood powder (particle size 150 μm or less) 2.4 parts by weight, water-absorbing polymer (particle size 300 μm or less) 2 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite and 11% saline were mixed to prepare an excess water-containing exothermic composition. The surplus water value of the surplus water-containing exothermic composition was 25, and the rising temperature rising rate was 6 ° C./5 minutes. The surplus water value is obtained by filter paper No. 1 manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define. A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The breathability of the coating material was 290 g / (m ² · day) in terms of moisture permeability by the Lissy method.
The exothermic composition molded body that was molded through a mold having a thickness of 1.2 mm having two through holes was laminated on the polyethylene film surface of the substrate so that the polyethylene film surfaces overlap each other. Cover the covering material, heat seal the peripheral edge of the exothermic composition molded body, cut it, the seal width of the peripheral part of the heating element is 8 mm, and there are two segmented heat generating parts, and the segmented part is long A nasal temperature fever that is a kind of mask-shaped face temperature heating element having a heating part of 30 mm × width 22 mm, a section heating part 30 mm long × 15 mm wide at the top, a seal width of 8 mm, length 116 mm × width 95 mm The body was made. Further, a local ventilation material, which is a non-breathable polyethylene film, is provided on the ventilation surface via an adhesive so that air can be ventilated only from both ends of each section. Further, rubber is provided at both ends in the longitudinal direction of the heating element. A plurality of mask-shaped nasal heating elements were prepared. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was removed from the outer bag, and the exothermic surface was fixed to the face with an ear hook so that the non-breathable surface was directed to the nose and the upper heating part was positioned around the nose, and a heat test was conducted. The heating element was bent from the section, was fixed tightly along the nose, became warm immediately, and the warm time lasted for more than 30 minutes. The heating element was a heating element having excellent heat generation performance and excellent flexibility. The loop stiffness of the heating element storage body was 98 mN / cm. As the storage body, a heat generating portion area composed of a divided heat generating portion and a dividing portion was adopted.

(Example 21)
100 parts by weight of iron powder (particle size 300 μm or less), 5.5 parts by weight of activated carbon (particle size 300 μm or less), 2.5 parts by weight of wood powder (particle size 150 μm or less), water-absorbing polymer (particle size 300 μm or less) 5 parts by weight, 0.5 parts by weight of slaked lime, 0.7 parts by weight of sodium sulfite, and 11% saline were mixed to prepare an excess water heating composition. The surplus water value of the surplus water-containing exothermic composition was 20, and the rising temperature rising rate was 6 ° C./5 minutes. The surplus water value is obtained by filter paper No. manufactured by Nakamura Science Co., Ltd. 2 (circular) was used to define.
A laminate comprising a polypropylene nonwoven fabric and a polyethylene porous film, a breathable coating material, a polyethylene film with a pressure-sensitive adhesive layer with a separator on one side, and an ethylene-vinyl acetate copolymer film on the other side. Used for non-breathable substrate. The breathability of the covering material was 290 g / (m 2 · day) in terms of moisture permeability by the Lissy method.
Using a 2.0 mm thick mold having six through holes, the exothermic composition molded body obtained by molding the surplus water exothermic composition through the mold was laminated on the polyethylene film surface of the substrate, and a polyethylene film Cover the covering material so that the surfaces overlap each other, heat seal the peripheral edge of the exothermic composition molded body, cut it, and use a 2.0 mm thick mold having six through holes, The exothermic composition molded body obtained by molding the excess water exothermic composition through a mold is laminated on the polyethylene film surface of the base material, and the covering material is covered so that the polyethylene film surfaces overlap each other. Heat-sealing and cutting the periphery of the body,
Six section heat generating portions are provided at intervals with a section portion that is a heat seal area as an interval, the section heat generating portion has a heat generating portion of length 77 mm × width 15 mm, and the section portion is length 77 mm × width 5 mm. A plurality of heating elements having a peripheral seal width of 8 mm and a length of 131 mm and a width of 93 mm were produced. The heating element was sealed in a non-breathable outer bag and allowed to stand at room temperature for 24 hours. After 24 hours, the heating element was taken out from the outer bag and measured for physical properties. The loop stiffness of the heating element storage body was 98 mN / cm. The minimum bending resistance was 48, and the minimum bending resistance change was zero. Further, the heating element was taken out from the outer bag and fixed to the waist with the adhesive layer, and the heat generation test was carried out, but it was fixed tightly along the waist and became warm immediately, and the warm time continued for 6 hours or more. The heating element had excellent heat generation performance and excellent flexibility, had a good feeling in use, and was a practical heating element.

(Comparative example 5) Except having made the loop stiffness of the storage body into 1000 mN / cm, the several heat generating body similar to Example 21 was created. The heating element was taken out from the outer bag, fixed to the waist with the adhesive layer, and a heat test was conducted. However, the heating element immediately became warm and the warm time lasted for 6 hours or more. However, the heating element did not follow the waist and was flexible. The heating element was not practical, had a poor feeling in use, and was impractical. The minimum bending resistance was not measurable.

It is a top view which shows the filter paper which provided the reference line. It is sectional drawing which shows a measuring apparatus. It is sectional drawing which shows operation. It is sectional drawing which shows a measurement. It is a top view which shows the filter paper which calculates a surplus water value. (A) It is a top view which shows an example of a rectangular heating element. (B) It is sectional drawing of the same AA. (A) It is a top view which shows an example of a hot spring heating element. (B) It is sectional drawing of the same BB. (C) It is sectional drawing which shows another example of a hot-spring heating element. (A) It is a top view which shows an example of a foot temperature heating element. (B) It is sectional drawing of CC. (C) It is a top view which shows another example of a foot temperature heating element. (A) It is a top view which shows an example of a rigid soft heating element. (B) It is a top view which shows another example of a rigid soft heating element. (A) It is a top view which shows an example of a stripe heat generating body. (B) It is sectional drawing of the DD. (C) It is sectional drawing which shows another example of a stripe heat generating body. (D) It is sectional drawing which shows another example of a stripe heat generating body. (A) It is a top view which shows an example of a separable heating element. (B) It is a top view which shows an example of a small heat generating body. (C) It is a top view which shows another example of the separable heating element. (D) It is a top view which shows another example of a small heat generating body. (A) It is a top view which shows an example of an expansion-contraction heating element. (B) It is sectional drawing of the same EE. (A) It is a top view which shows another example of an expansion-contraction heating element. (B) It is a top view which shows another example of an expansion-contraction heating element. It is a top view which shows an example of a band heat generating body. (A) It is a top view which shows an example of a tunnel ventilation heat generating body. (B) It is sectional drawing of the FF. (A) It is a partial expanded sectional view which shows an example of the vicinity of the space part of a tunnel ventilation heat generating body. (B) It is a partial expanded sectional view which shows another example of the vicinity of the space part of a tunnel ventilation | gas_flowing heat generating body. (A) It is a top view which shows an example of a chemical | medical agent heating element. (B) It is sectional drawing of the same GG. (C) It is a top view which shows another example of a chemical | medical agent heating element. (D) It is sectional drawing which shows another example of a chemical | medical agent heating element. (A) It is a top view which shows another example of a chemical | medical agent heating element. (B) It is sectional drawing of HH. (A) It is a top view which shows an example of the separable medicine heating element. (B) It is sectional drawing of the II. (c) It is sectional drawing which shows an example of a small medicine heat generating body. (A) It is a top view which shows an example of a eye temperature heat generating body. (B) It is sectional drawing of the same JJ. (C) It is a top view which shows another example of a eye temperature heat generating body. (D) It is sectional drawing which shows another example of eye temperature heat generating body. (E) It is a top view which shows an example of a face temperature heating element. (F) It is a perspective view which shows another example of a face temperature heating element. (G) It is a top view which shows an example of a nasal temperature heating element. (H) It is a top view which shows another example of the tunnel ventilation heating element for face temperature heating elements and a nasal temperature heating element. (A) It is a top view which shows another example of the rigid soft heating element before being folded. (B) It is a top view which shows an example of the outer temporary attachment folding heating element with an outer bag. (C) It is sectional drawing of the same KK. (D) It is a top view which shows another example of the outer temporary attachment folding heat generating body with an outer bag. It is sectional drawing which shows the softness | flexibility of a rigid soft heating element. It is sectional drawing which shows the non-flexibility of a single heat generating part heat generating body. (A) It is a top view which shows an example of the alternate cut which is a kind of intermittent cut. (B) It is a top view which shows an example of the perforation which is a kind of intermittent cut. (C) It is a top view which shows another example of the perforation which is a kind of intermittent cut. It is sectional drawing which shows (a)-(d) type moldability. It is sectional drawing which shows (a)-(d) non-molding property.

Explanation of symbols

1 filter paper 2 reference line 3 measuring plate (measuring plate having a cylindrical through hole)
4 Cylindrical through-hole 5 Diameter of cylindrical through-hole 6 Height of cylindrical through-hole 7 Diameter circle of cylindrical through-hole 8 Support plate 9 Filling plate 10 Holding plate 11 Non-water-absorbing plastic film (polyethylene film, etc.)
DESCRIPTION OF SYMBOLS 12 Penetration trace 13 Penetration distance 14 Exothermic composition 15 Excess water value measuring device 17 Single heating part heating element 17A Rectangular heating element 18 Warm heating element 19 Foot temperature heating element 20 Division heating part heating element 21 Rigid soft heating element 22 Stripe heating Body 23 Separable heating element 23A Small heating element 24 Stretch heating element 25 Band heating element 26 Tunnel ventilation heating element 27 Drug heating element 27A Separable medicine heating element 27B Small drug heating element 28 Outer temporary fitting folding heating element with outer bag 29 Including Excess water exothermic composition 30 Exothermic composition molded body 31 Exothermic part 32 Sectional exothermic part 33 Sorting part 34 Sealing part 35 Covering material 36 Base material 37 Core material 38 Anti-slip material 39 Adhesive layer 40 Breathable adhesive layer 41 Space part 42 Surface Fastener 43 Separator 44 Intermittent Cut 45 Cut Part 46 Joint 47 Perforation 48 Alternate cuts 49 Notches (V notch, U notch, I notch, etc.)
50 fixed parts (adhesive layer, adhesive layer, heat seal layer, etc.)
51 Local ventilation material 52 Space part 53 Vent hole 54 Ventilation blocking sheet 55 Handle (knob part)
56 Band (support, packaging material)
57 Outer bag 58 Outer temporary attachment layer 59 Sealing part 60 Folded heating element 61 Support base 62 Side ventilation part of section heating part 63 Top part of section heating part 64 Mold formability measuring device 65 Magnet 66 Eye heating element
67 Eye side
68 Textured material
69 Face temperature heating element
69A nasal heating element
70 mask
71 Heating element (heating part) storage part
72 Heating part (heating element) holding part
73 Ear hook
74 holes
75 Ear straps, ear rubber

Claims (3)

Excess water value measuring device having a through-hole and a penetrating material allow the exothermic composition to be measured without revealing the total amount of water when measuring the exothermic composition in the amount of moisture that decreases with time in the exothermic composition after production. Measuring the surplus water as an index value of the current surplus water amount, and defining the surplus water value of the current exothermic composition indicating the surplus water amount of the exothermic composition as an index for the total water content at the time of measurement ,
The permeation material is a filtration material having a filtration time of 120 seconds / 100 ml or less, and the exothermic composition is filled in the through hole of the measurement plate of the surplus water value measuring device bottomed on the filtration material. Measure the penetration distance to the filter medium of water or an aqueous solution of the exothermic composition in the through hole of the measurement plate after minutes,
Excess water value = [penetration distance (mm) / height of through-hole (exothermic composition) (mm)] × 100
By
Divide the permeation distance by the height of the through hole proportional to the total water content at the time of measurement of the exothermic composition filled in the through hole, and multiply by 100 to obtain the value obtained at the time of measurement in the exothermic composition. A method for defining a surplus water value of an exothermic composition, characterized in that the surplus water value of the current exothermic composition indicating the amount of surplus water relative to the total water content . Excess water value measuring device with a cylindrical through-hole and penetrating material can generate heat without revealing the total water content when measuring the exothermic composition in the exothermic composition after production. It is a method of measuring the surplus water value of the present exothermic composition by measuring the surplus water of the composition as an index value of the current surplus water amount and indicating the surplus water amount of the exothermic composition as an index with respect to the total water content at the time of measurement. And
A support plate made of the excess water level measuring device from the non-water-absorbing material, the measurement plate, the filling plate, plastic film, composed of a pressing plate, wherein the osmotic material is drainage time of 120 seconds / 100M1 following filter paper, said Using the exothermic composition, a filter paper with eight reference lines radially written at 45 ° intervals from the center point and having a drainage time of 120 seconds / 100 ml or less is placed on a support plate, and the filter paper is placed at the center of the filter paper. surface length 0.99 mm × width 100 mm with a cylindrical through hole Place the smooth measurement plate, place the cylindrical through-holes near to the heat-generating composition, moving along a filling plate on measuring plate, wherein the exothermic composition is filled, further wherein as the exothermic composition does not cause an exothermic reaction during the measurement, place the non-water-absorbing plastic film so as to cover a cylindrical through-hole, further thereon, the pressing plate It was placed, after the hold 5 minutes, Take out the filter paper, along the radial reference line, read the penetration distance of water or aqueous solution from the diameter circle of the cylindrical through hole of the measuring plate to the penetration tip in mm units, and read each of the 8 A value (mm) obtained by arithmetically averaging the permeation distance (m1, m2, m3, m4, m5, m6, m7, m8) is proportional to the total water content at the time of measurement of the exothermic composition filled in the cylindrical through hole. The value obtained by dividing the height of the cylindrical through hole (mm) and multiplying by 100 is the surplus water value of the current exothermic composition indicating the surplus water amount with respect to the total water amount at the time of measurement in the exothermic composition. The method for defining the excess water value of the exothermic composition according to claim 1. Excess water value measuring device with a cylindrical through-hole and penetrating material can generate heat without revealing the total water content when measuring the exothermic composition in the exothermic composition after production. It is a method of measuring the surplus water value of the present exothermic composition by measuring the surplus water of the composition as an index value of the current surplus water amount and indicating the surplus water amount of the exothermic composition as an index with respect to the total water content at the time of measurement. And
The surplus water value measuring device is composed of a support plate, a measurement plate, a filling plate, a plastic film, and a pressing plate made of a non-water-absorbing material, and the permeation material is JIS P3801 “Type 2” filter paper, The JIS P3801 “Type 2” filter paper on which eight reference lines are written at 45 ° intervals radially from the center point is placed on a support plate, and the diameter of 29 mm × height at the center of the filter paper a cylindrical through hole of 20mm Place the smooth measurement plate surface of the lifting one length 150 mm × width 100 mm, place the cylindrical through-holes near to the heat-generating composition, moving along a filling plate on measuring plate, filling the heat-generating composition, further, the so exothermic composition does not cause an exothermic reaction during the measurement, place the non-water-absorbing plastic film so as to cover a cylindrical through-hole, further thereon, pressing Place the board, 5 minutes After holding the filter paper, remove the filter paper, read the penetration distance of water or aqueous solution along the reference line written radially, and read the distance from the diameter circle of the cylindrical through hole of the measurement plate to the penetration tip in mm units. When measuring the exothermic composition in which the columnar through-holes were filled with values (mm) obtained by arithmetically averaging the eight permeation distances (m1, m2, m3, m4, m5, m6, m7, m8) . The surplus water of the present exothermic composition, which indicates the surplus water amount relative to the total water amount at the time of measurement in the exothermic composition, divided by the height of the cylindrical through hole (mm) proportional to the total moisture amount and further multiplied by 100 The method for defining the excess water value of the exothermic composition according to claim 1, wherein the value is a value.