JP2022089912A - Steam generating hyperthermia tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hyperthermia tool that has a structure capable of sufficiently pressing an organism skin such as a human body with a projection part.

SOLUTION: A hyperthermia tool includes: a sheet 10 including a convex projection part 12 on a side of one surface 10a; and a heat generating material 30 disposed on a side of the other surface 10b of the sheet 10. The sheet 10 is configured to include a nonwoven fabric sheet 15. The nonwoven fabric sheet 15 has at least two endothermic peaks that each come with phase transition. Among them, a first endothermic peak is present within a temperature range of 60°C or higher and 180°C or lower, while a second endothermic peak is present on a higher temperature side than the first endothermic peak.

SELECTED DRAWING: Figure 4

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a heating device.

Patent Document 1 describes a sheet-shaped heating tool. This heating tool is in the form of a sheet formed by papermaking, is configured to generate heat on the entire surface, and has a plurality of convex protrusions on one side.

Japanese Unexamined Patent Publication No. 2005-111180

By the way, there is a need to make it possible to more sufficiently press the skin of a living body such as a human body by using a heating device having a protrusion. However, the heating device of Patent Document 1 still has room for improvement in fulfilling such a requirement.

The present invention relates to a heating device having a structure capable of more sufficiently pressing the skin of a living body such as a human body by a protrusion.

The present invention comprises a sheet having a convex protrusion on one side and a sheet.
The exothermic material arranged on the other side of the sheet and
Equipped with
The sheet is configured to include a non-woven fabric sheet.
The nonwoven fabric sheet each has at least two endothermic peaks with a phase transition, of which the first endothermic peak exists in the temperature range of 60 ° C. or higher and 180 ° C. or lower, and the second endothermic peak is the first endothermic peak. It relates to a heating device existing on the higher temperature side.

According to the present invention, it is possible to more sufficiently press the skin of a living body such as a human body by a protrusion.

It is a perspective view of the heating tool which concerns on 1st Embodiment. It is a top view of the heating tool which concerns on 1st Embodiment. It is sectional drawing (cross-sectional view along the line AA of FIG. 2) of the heating tool which concerns on 1st Embodiment. It is an enlarged sectional view of the heating tool which concerns on 1st Embodiment. 5 (a) and 5 (b) are cross-sectional views showing a series of steps of forming a protrusion on a sheet constituting the heating tool according to the first embodiment. It is a schematic diagram which shows the state which attached the heating tool which concerns on 1st Embodiment to a living body. 7 (a), 7 (b), 7 (c), 7 (d), 7 (e), 7 (f), 7 (g), 7 (h), 7 (I), FIGS. 7 (j) and 7 (k) are diagrams for explaining an example of modification of the arrangement or shape of the protrusion of the heating tool according to the first embodiment. It is an enlarged sectional view of the heating tool which concerns on 2nd Embodiment. 9 (a) and 9 (b) are cross-sectional views showing a series of steps of forming a protrusion on a sheet constituting the heating tool according to the second embodiment. It is sectional drawing of the heating tool which concerns on 3rd Embodiment. 11 (a) is a perspective view showing the main body of the heating device according to the fourth embodiment, and FIG. 11 (b) is a perspective view showing the wearing tool of the heating device according to the fourth embodiment. 12 (a) and 12 (b) are views showing the usage state of the heating device according to the fourth embodiment, of which FIG. 12 (a) is a perspective view and FIG. 12 (b) is a protrusion on the palm. It is a figure showing a state of pressing with, and only the palm is shown in a cross section. 13 (a), 13 (b) and 13 (c) are diagrams for explaining Example 1 and Example 2, of which FIG. 13 (a) is used for measuring the change with time of temperature. A figure for explaining the position of the projected protrusion, FIG. 13 (b) is a graph showing the measurement result of Example 1, and FIG. 13 (b) is a graph showing the measurement result of Example 2. It is a schematic diagram of the measuring apparatus used for the measurement of Example 1 and Example 2. It is a perspective view for demonstrating the sampling part of the sample used for the measurement of the endothermic peak of Example 3 and Example 4. FIG. It is a figure which shows the measured value of Example 3 and Example 4. FIG. It is a graph which shows the measurement result of Example 3 and Example 4. 18 (a) and 18 (b) are diagrams showing the imaging results of the protrusions of Example 5, and FIGS. 18 (c) and 18 (d) show the imaging results of the protrusions of Example 6. It is a figure. 19 (a) and 19 (b) are diagrams showing the imaging results of the protrusions of Example 7, and FIGS. 19 (c) and 19 (d) show the imaging results of the protrusions of Example 8. It is a figure. 20 (a) is a perspective view showing a first example of the main body of the heating device according to the sixth embodiment, and FIG. 20 (b) is a second example of the main body of the heating device according to the sixth embodiment. It is a perspective view which shows. 21 (a) is a perspective view of the heating tool according to the sixth embodiment, FIG. 21 (b) is a side view of the heating device according to the sixth embodiment, and FIG. 21 (c) is C- of FIG. 21 (b). It is sectional drawing along the C line.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In all drawings, similar components are designated by the same reference numerals, and duplicate description will be omitted as appropriate.

[First Embodiment]
As shown in any one of FIGS. 1 to 4, the heating tool 100 according to the present embodiment has a sheet 10 having a convex protrusion 12 on one surface 10a (FIGS. 3 and 4) and a sheet 10 of the sheet 10. It is provided with an exothermic material 30 (FIGS. 3 and 4) arranged on the other surface 10b (FIGS. 3 and 4).
The sheet 10 includes a non-woven fabric sheet 15 (FIG. 4).
The non-woven fabric sheet 15 each has at least two endothermic peaks with a phase transition, of which the first endothermic peak exists in the temperature range of 60 ° C. or higher and 180 ° C. or lower, and the second endothermic peak is from the first endothermic peak. Also exists on the high temperature side.
Therefore, the non-woven fabric sheet 15 is molded at a molding temperature intermediate between the first endothermic peak and the second endothermic peak to form the protrusion 12, so that the rigidity of the protrusion 12 can be sufficiently ensured. It is possible to sufficiently press the skin of the human body or the like by the protrusion 12.
The second endothermic peak of the nonwoven fabric sheet 15 may be 180 ° C. or lower as long as it is higher than the temperature of the first endothermic peak.

In the present embodiment, preferably, as will be described later, the three-dimensional protrusion 12 is formed by molding the nonwoven fabric sheet while maintaining the breathable network structure.
The methods include (1) a method of transforming a flexible mesh structure that follows the molding process into a desired shape and maintaining that state (shape), and (2) elastically changing the mesh structure. There is a method of deforming while expanding and contracting to maintain the state.

In the method (1), a flexible non-woven fabric that can tolerate the deformation of the protrusion 12 to the target shape is formed, and in that state, the fibers (fibers of the first resin material described later) are partially separated from each other. It is bound (bonded by the binding portion of the second resin material described later) to maintain the shape. Therefore, a non-woven fabric containing two or more resins is used, and the non-woven fabric is molded at a temperature or higher so that one or more resins on the low melting point side can be bound to other resins.
During this molding, the resin fibers on the high melting point side (fibers of the first resin material) do not melt and are deformed while maintaining the structure, and the resin having a melting point lower than the molding temperature binds the fibers to each other. Maintain the shape after deformation.
The non-woven fabric sheet (blended cotton, core sheath, etc.) used for the molding process by the method (1) has a deformable structure and has two or more endothermic peaks which are the melting points of each resin. In the method (1), the protrusion 12 can be formed by molding at a temperature between the peaks at both ends on the temperature axis among these endothermic peaks.

In the method (2), the non-woven fabric fiber made of the thermoplastic resin is deformed and cooled in a temperature state in which the non-woven fabric fiber can be deformed without melting, so that the deformed shape can be maintained. .. That is, in the method (2), it is preferable to mold the nonwoven fabric in a temperature range in which the nonwoven fabric can be deformed without destroying the structure of the nonwoven fabric (without being formed into a film).

More specifically, in the case of the present embodiment, the nonwoven fabric sheet 15 is composed of a fiber made of a first resin material and a second resin material having a melting point lower than that of the first resin material, and connects the fibers to each other. It is composed of a binding part that is worn and a binding part that is worn.
As described above, the sheet 10 has a fiber made of the first resin material and a binding portion made of the second resin material having a lower melting point than the first resin material and binding the fibers to each other. Since the non-woven fabric sheet 15 including the above is provided, the rigidity of the sheet 10 and the rigidity of the protrusion 12 of the sheet 10 can be sufficiently ensured. Therefore, it is possible to sufficiently press the skin of a living body such as a human body by the protrusion 12.
In the case of this embodiment, the first endothermic peak is the melting point of the second resin material. The second endothermic peak of the nonwoven fabric sheet 15 is the melting point of the first resin material.
The sheet 10 and the nonwoven fabric sheet 15 are made of at least one resin material having a lower melting point than the first resin material and a higher melting point than the second resin material, and are higher than the resin material. Even if it further includes a second binding portion that binds fibers of a resin material having a melting point (a resin group (including at least the first resin material) that does not melt during processing of a non-woven fabric accompanied by molding of the protrusion 12). good.

By attaching the heating tool 100 to a living body such as a human body with the protrusion 12 pressed against the skin, the surface layer of the living body can be warmed by the heat of the exothermic material 30 while the skin of the living body is pressed by the protrusion 12. ..
Thereby, for example, by applying the pressure by the protrusion 12 and the stimulation by the heat of the exothermic material 30 to the fascia of the lower layer of the skin, the meridians and the acupuncture points can be stimulated by the pressure and heat like acupuncture and moxibustion.

The heating tool 100 is hermetically housed in a packaging material (not shown) before use. When the packaging material is opened and the heating tool 100 is taken out from the packaging material, oxygen contained in the outside air is supplied to the exothermic material 30, so that the exothermic material 30 generates heat.

The sheet 10 has, for example, a flat sheet-shaped base portion 11 and a protrusion 12 that is convexly curved toward one surface 10a side of the sheet 10 with the base portion 11 as a reference and the other surface 10b side is a cavity 13. , Is equipped.

In the case of the present embodiment, the exothermic material 30 is filled, for example, in the cavity 13 of the protrusion 12 of the sheet 10.
However, the present invention is not limited to this example, and the exothermic material 30 may not be filled in the cavity 13.

The heating tool 100 includes a main body portion 50 that is applied to a portion of the skin of a living body to which heat is desired to be applied.
The main body 50 is, for example, the sheet 10, the exothermic material 30 filled in the cavity 13 of the protrusion 12 of the sheet 10, and the second sheet 20 laminated on the other surface 10b side with respect to the sheet 10. (FIG. 3) and a water-absorbing sheet 40 (FIG. 3) laminated between the second sheet 20 and the base 11 are provided. Depending on the composition of the exothermic material 30, the heating tool 100 may not be provided with the water absorbing sheet 40.

In the following description, in the main body 50, the protruding direction of the protrusion 12 (lower side in FIG. 3) is referred to as the front surface side, and the direction opposite to the protrusion direction of the protrusion 12 (upper side in FIG. 3) is referred to as the rear surface side. be.

The planar shape of the main body portion 50 is not particularly limited, but can be, for example, a rectangular shape (for example, a square shape) in which each of the four corner portions has a chamfered shape, as shown in FIG. However, the planar shape of the main body 50 may be a polygonal shape other than a rectangle, a circular shape, an elliptical shape, or any other shape.

The sheet 10 constitutes an outer surface on the front surface side of the main body 50. For example, the heating tool 100 is used in a state where the sheet 10 (particularly the protrusion 12) is in direct contact with the skin of a living body.
In the case of this embodiment, the sheet 10 is composed of a single-layer non-woven fabric sheet 15 (FIG. 4).
Further, the second sheet 20 constitutes an outer surface on the rear surface side of the main body portion 50.
The sheet 10 and the second sheet 20 are formed, for example, in the same planar shape as each other, and are overlapped with each other so that their outer lines coincide with each other, and their peripheral edges are joined to each other.
As a result, the water-absorbing sheet 40 is held between the base 11 of the sheet 10 and the second sheet 20.
In the case of this embodiment, the exothermic material 30 is held between the inner peripheral surface of the protrusion 12 of the sheet 10 and the water absorbing sheet 40.

The exothermic material 30 is composed of, for example, an oxidizable metal, a water retaining agent, and water. Oxygen is supplied to the metal to be oxidized in the exothermic material 30, so that the exothermic material 30 generates heat.

Further, the exothermic material 30 may contain iron and a carbon component.
The iron referred to here may be at least a part of the above-mentioned oxidizable metal, or may be different from the above-mentioned oxidizable metal. The iron referred to here is iron to be oxidized.
Further, the carbon component referred to here may be at least a part of the above-mentioned water-retaining agent, and the exothermic material 30 may contain a carbon component separately from the above-mentioned water-retaining agent.

In the main body 50, the exothermic material 30 is filled in the portion corresponding to the protrusion 12 of the sheet 10, and the exothermic material 30 is also filled in the portion corresponding to the base 11 between the sheet 10 and the second sheet 20. It may have been done. However, even in this case, it is preferable that the thickness of the exothermic material 30 at the portion corresponding to the protrusion 12 of the sheet 10 is larger than the thickness of the exothermic material 30 at the portion corresponding to the base portion 11. Therefore, the portion of the skin of the living body corresponding to the protrusion 12 can be sufficiently warmed locally.
More preferably, the exothermic material 30 is locally filled in the portion corresponding to the protrusion 12 of the sheet 10, and the exothermic material 30 is not present in at least a part of the portion corresponding to the base 11.
In the case of the present embodiment, the exothermic material 30 is filled in the portion corresponding to the protrusion 12 in the sheet 10, whereas the exothermic material 30 is substantially not present in the portion corresponding to the base 11.

It is preferable that the exothermic material 30 is filled in at least a portion corresponding to the tip end portion of the protrusion 12 in the cavity 13. Thereby, the skin of the living body can be warmed by the tip portion of the protrusion 12.
For example, in the height direction of the cavity 13, the exothermic material 30 is filled in a region of 50% or more from the lower end side in FIG. 4 (a region corresponding to the lower half of the range shown by the height dimension H2 in FIG. 4). Is preferable.

More specifically, in the case of the present embodiment, the exothermic material 30 is filled, for example, in a region of 70% or more in the height direction of the cavity 13. That is, as shown in FIG. 4, the height dimension of the region where the exothermic material 30 is filled in the cavity 13 is 0.7H2 or more with respect to the height dimension H2 of the cavity 13.
As a result, the protrusion 12 can be heated more sufficiently, and the skin of the living body can be sufficiently warmed by the protrusion 12.
It is more preferable that the exothermic material 30 is filled in, for example, 90% or more of the region in the height direction of the cavity 13. That is, it is more preferable that the height dimension of the region filled with the exothermic material 30 in the cavity 13 is 0.9H2 or more.
As described above, the filling rate of the exothermic material 30 in the height direction of the cavity 13 is preferably 70% or more, and more preferably 90% or more.
In the case of the present embodiment, for example, the rear surface (upper surface in FIG. 4) of the base 11 of the sheet 10 and the rear surface (upper surface in FIG. 4) of the exothermic material 30 are flush with each other.

Here, a method of measuring the filling rate of the exothermic material 30 in the height direction of the cavity 13 will be described.
As the measuring instrument, a laser microscope or a laser displacement meter capable of measuring the height difference is used. As the laser displacement meter, a one-dimensional spot type, a two-dimensional laser displacement meter, a three-dimensional laser displacement meter, or the like can be used. An appropriate laser displacement meter is selected based on the required measurement distance and the spot distance of the laser beam according to the shape and height dimension of the protrusion 12. For example, a sensor head manufactured by KEYENCE Co., Ltd .; IL-300 (measurement distance 160 mm to 450 mm, spot diameter φ500 μm) can be used.

In order to measure, the main body 50 is taken out from the heating tool 100 in a nitrogen atmosphere so that the exothermic material 30 does not generate heat, the second sheet 20 and the water absorbing sheet 40 are removed from the sheet 10, and the exothermic material in the cavity 13 is measured. The surface on the base end side of the protrusion 12 in 30 (the upper surface of the exothermic material 30 in FIG. 4) is exposed.
The measurement by the measuring instrument is performed so that the laser beam is irradiated perpendicularly to the sheet 10. In this measurement, the height difference between the surface of the exothermic material 30 on the base end side of the protrusion 12 (the upper surface of the exothermic material 30 in FIG. 4) and the other surface 10b of the sheet 10 is measured. At this time, the laser light is scanned in the diameter direction of the surface (which also coincides with the diameter direction of the protrusion 12) so that the laser light passes through the center of the surface on the base end side of the protrusion 12 in the exothermic material 30. Find the maximum value of the height difference. At this time, the scanning distance is set to a distance longer than the diameter of the protrusion 12.
The height dimension of the exothermic material 30 is a value obtained by subtracting the maximum value of the height difference obtained by measurement from the height dimension H2 shown in FIG.

Here, when the shape of the inner peripheral surface of the protrusion 12 and the shape of the outer peripheral surface of the protrusion 12 (the shape of the outer peripheral surface of the cavity 13) are substantially the same, the height dimension H2 is set as the height dimension H2 for convenience. The height dimension H1 shown in 4 can be used.
That is, the height dimension of the exothermic material 30 is a value obtained by subtracting the maximum value of the height difference obtained by measurement from the height dimension H1.
Therefore, the height dimension H1 is measured as follows. That is, the front and back sides of the sheet 10 are reversed from those in the measurement of the height difference, and the maximum value of the height difference when the laser beam is scanned is obtained by passing through the apex of the protrusion 12. At this time, the laser beam is scanned in the diameter direction of the protrusion 12, and the scanning distance is set to be longer than the diameter of the protrusion 12.

On the other hand, when the shape of the inner peripheral surface of the protrusion 12 and the shape of the outer peripheral surface of the protrusion 12 (the shape of the outer peripheral surface of the cavity 13) are different, for example, when the outer peripheral surface of the cavity 13 has a frustum shape, nitrogen is used. In the atmosphere, the exothermic material 30 contained in the cavity 13 is removed. At this time, using a brush or the like, the exothermic material 30 is removed while being careful not to change the shape of the cavity 13. Then, the height dimension (height dimension H2) of the cavity 13 is measured by scanning the laser beam in the same manner as the measurement of the maximum value of the height difference.

The shape of the protrusion 12 is not particularly limited, but is, for example, a shape that tapers toward the tip side. However, it is preferable that the tip portion of the protrusion 12 has a rounded shape.
The shape of the protrusion 12 can be, for example, a cone such as a cone, an elliptical cone, or a long cone, or a cone such as a cone, an ellipse, or a long cone.
In the case of this embodiment, the shape of the protrusion 12 is formed in a conical shape.

The shape of the protrusion 12 is not particularly limited, but is, for example, a shape that tapers toward the tip side. However, it is preferable that the tip portion of the protrusion 12 has a rounded shape.
The shape of the protrusion 12 can be, for example, a cone such as a cone, an elliptical cone, or a long cone, or a cone such as a cone, an ellipse, or a long cone.
In the case of this embodiment, the shape of the protrusion 12 is formed in a conical shape.
The height dimension H1 (FIG. 4) of the protrusion 12 is not particularly limited, but is preferably 2 mm or more and 15 mm or less, more preferably 3 mm or more and 10 mm or less, and 5 mm or more and 8 mm or less. More preferred.
When the height dimension H1 of the protrusion 12 is 2 mm or more and 15 mm or less, the protrusion 12 can sufficiently and appropriately press the skin of the living body.
The diameter of the protrusion 12 is not particularly limited, but is preferably 2 mm or more and 38 mm or less, and more preferably 5 mm or more and 20 mm or less. When the diameter of the protrusion 12 is 2 mm or more and 38 mm or less, the protrusion 12 can sufficiently and appropriately press the skin of the living body.
The inclination angle α (FIG. 4) of the protrusion 12 is not particularly limited, but is preferably, for example, 30 degrees or more, and more preferably 45 degrees or more. When the inclination angle α of the protrusion 12 is 30 degrees or more, the skin of the living body can be sufficiently pressed by the protrusion 12.
The inclination angle α of the protrusion 12 is preferably 80 degrees or less, more preferably 70 degrees or less, and even more preferably 65 degrees or less. When the inclination angle α of the protrusion 12 is 80 degrees or less, the degree of biting of the protrusion 12 into the skin of the living body can be set within an appropriate range.
As described above, the tip portion of the protrusion 12 preferably has a rounded shape. The radius of curvature of the tip of the protrusion 12 is preferably 0.5 mm or more and 3.0 mm or less, and more preferably 0.8 mm or more and 1.5 mm or less.

Here, the fascia is located at a depth of about 6 mm from the surface of the skin, for example, in the case of the shoulder portion of the human body, and the protrusion portion so that the pressing action and the heating action extend to the depth. It is preferable that the shape of 12 and the exothermic performance of the exothermic material 30 are set. Regarding the exothermic performance of the exothermic material 30, for example, the temperature of the surface of the skin is preferably set to be 37 ° C. or higher and 44 ° C. or lower, and is set to 38 ° C. or higher and 42 ° C. or lower. It is more preferable to have.

The arrangement of the plurality of protrusions 12 is not particularly limited, but may be, for example, an arrangement such as a houndstooth pattern or a square lattice pattern.
In the case of the present embodiment, for example, as shown in FIG. 2, the sheet 10 has five protrusions 12 arranged in a houndstooth pattern. More specifically, one protrusion 12 is arranged at the center of the sheet 10, and the remaining four protrusions 12 are arranged around the protrusion 12. These four protrusions 12 are arranged at the four corners of the seat 10, respectively.
The distance L between the centers of the adjacent protrusions 12 (FIG. 2) is not particularly limited, but is preferably equal to or greater than the height dimension H1 (FIG. 4) of the protrusions 12, and is 1.5 times or more the height dimension H1. Is more preferable. By doing so, the skin of the living body can be sufficiently pressed by the individual protrusions 12.

Here, in the state of the sheet 10 in which the heat generating material 30 is not filled in the protrusion 12, when the protrusion 12 is pressed in the direction perpendicular to the surface of the sheet 10, the force of 1N per protrusion 12 is applied. The load bearing capacity of the protrusion 12 is set so that the protrusion 12 is deformed within the range of elastic deformation without substantially plastically deforming, and the protrusion 12 is plastically deformed with a force of 25N. It is preferable that the protrusion 12 is deformed within the range of elastic deformation without substantially plastic deformation with a force of 5N per one protrusion 12, and the protrusion 12 is deformed with a force of 18N. It is more preferable that the load bearing capacity of the protrusion 12 is set so that the 12 is plastically deformed.
By doing so, the skin of the living body can be sufficiently pressed by the protrusions 12, and the degree of biting of the protrusions 12 into the skin of the living body can be set within an appropriate range.

Further, when the protrusion 12 of the main body 50 in which the heat generating material 30 is filled in the protrusion 12 is pressed in the direction perpendicular to the surface of the sheet 10, the protrusion 12 per one protrusion 12 with a force of 3N. However, it is preferable that the load bearing capacity of the portion corresponding to the protrusion 12 is set in the main body 50 so that the protrusion 12 is deformed within the range of elastic deformation without substantially plastic deformation. The load bearing capacity of the portion corresponding to the protrusion 12 is set in the main body 50 so that the protrusion 12 is deformed within the range of elastic deformation without substantially plastically deforming even with the force of. It is more preferable to have.
By doing so, the skin of the living body can be sufficiently pressed by the protrusions 12, and the degree of biting of the protrusions 12 into the skin of the living body can be set within an appropriate range.

At least one of the sheet 10 and the second sheet 20 constituting the front and rear outer surfaces of the main body 50 has air permeability. As a result, oxygen can be supplied to the exothermic material 30 through at least one of the sheet 10 and the second sheet 20, and the exothermic material 30 can be heated.

In the case of this embodiment, for example, the sheet 10 has breathability.
That is, since the sheet 10 includes the non-woven fabric sheet as described above, not only the rigidity of the sheet 10 and the rigidity of the protrusion 12 can be sufficiently ensured, but also the sheet 10 has breathability. is doing.
Therefore, oxygen can be supplied to the exothermic material 30 via the sheet 10, and water vapor can be released through the sheet 10, for example.

More specifically, the sheet 10 has air permeability even in the protrusion 12, oxygen can be supplied to the exothermic material 30 through the protrusion 12, and water vapor is released through the protrusion 12. Can be made to.

In the case of the present embodiment, for example, the air permeability of the sheet 10 is higher than the air permeability of the second sheet 20.
That is, the heating tool 100 includes a second sheet 20 laminated on the other surface 10b side with respect to the sheet 10, and the air permeability of the sheet 10 is higher than the air permeability of the second sheet 20.
More specifically, in the case of the present embodiment, the second sheet 20 is, for example, a non-breathable sheet that is substantially impermeable to air.

Here, the air permeability of the sheet 10 is preferably 1 second / 100 ml or more, and more preferably 3 seconds / 100 ml or more. Further, it is preferably 20000 seconds / 100 ml or less, and more preferably 10000 seconds / 100 ml or less.
The air permeability of the nonwoven fabric sheet 15 is preferably 1 second / 100 ml or more, and more preferably 3 seconds / 100 ml or more. Further, it is preferably 20000 seconds / 100 ml or less, and more preferably 10000 seconds / 100 ml or less.
The air permeability of the second sheet 20 is preferably 1000 seconds / 100 ml or more, and more preferably 8000 seconds / 100 ml or more.
Air permeability is a value measured by JIS P8117 and is defined as the time it takes for 100 ml of air to pass through an area of 6.45 cm ² under constant pressure. The air permeability can be measured with a Wangken type air permeability meter or a similar measuring device.

In the present specification, having air permeability means that the air permeability is 190000 seconds / 100 ml or less, and preferably the air permeability is 100,000 seconds / 100 ml or less. Further, non-breathable means that the air permeability exceeds 190000 seconds / 100 ml.

In the case of the present embodiment, the content of the first resin material in the nonwoven fabric sheet 15 is higher than the content of the second resin material in the nonwoven fabric sheet 15.
As a result, the rigidity of the sheet 10 can be set to an appropriate range (not too hard). In addition, the air permeability of the sheet 10 can be easily ensured.

The water absorption sheet 40 is laminated on the other surface 10b side of the sheet 10 with respect to the base 11.
That is, the heating tool 100 includes a water absorbing sheet 40 (FIG. 3) laminated on the other surface 10b side with respect to the base 11 of the sheet 10.
When the heating tool 100 includes the water absorbing sheet 40, the excess water in the exothermic material 30 can be absorbed by the water absorbing sheet 40. Therefore, when the heating tool 100 is taken out from the packaging material, the exothermic material 30 can quickly generate heat.

As the water-absorbent sheet 40, for example, a sheet made of a water-absorbent polymer, a rayon non-woven fabric, a cellulose non-woven fabric, paper, or the like can be used.
Among them, the water-absorbent sheet 40 is preferably configured to contain a water-absorbent polymer, and such a water-absorbent sheet 40 may be obtained by molding the water-absorbent polymer into a sheet shape. ..
It is preferable that the water absorbing sheet 40 covers at least the rear surface side of each protrusion 12. In this case, the water absorption sheet 40 covers the rear surface side of the filling region of the exothermic material 30 filled in each protrusion 12. Therefore, the moisture in the exothermic material 30 filled in each protrusion 12 can be suitably absorbed by the water absorption sheet 40.
In the present embodiment, the heating tool 100 may have a water-absorbing polymer discontinuously arranged (arranged in a shape other than the sheet shape) instead of the water-absorbing sheet 40.

In the case of the present embodiment, it is preferable that the exothermic material 30 does not substantially contain the water-absorbent polymer, and by doing so, the content ratio of the oxidizable metal in the exothermic material 30 is sufficiently secured. Therefore, the amount of heat generated by the exothermic material 30 and the duration of heat generation can be sufficiently secured.

The heating device 100 includes a mounting portion 60 for mounting the heating device 100 on a living body in a state where the protrusion 12 is pressed against the skin.
The mounting portion 60 is configured to include, for example, a pair of mounting band portions 61 formed in a slightly long strip shape in one direction (left-right direction in FIG. 2).
As described above, in the case of the present embodiment, the planar shape of the main body portion 50 is rectangular. For example, the base end portion 66, which is one end portion in the longitudinal direction of each mounting band portion 61, is fixed along each of the pair of opposite edge edges of the main body portion 50.

The mounting band portion 61 includes a sheet-shaped mounting portion constituent sheet 63 and an adhesive layer 64 formed on one surface of a portion of the mounting portion constituent sheet 63 on the distal end side.
The adhesive layer 64 is formed on the surface of the mounting portion constituent sheet 63 that becomes the skin side when the heating tool 100 is mounted on a living body.
As described above, the mounting portion 60 is configured to include a pressure-sensitive adhesive sheet portion (for example, a portion of the mounting portion constituent sheet 63 on which the pressure-sensitive adhesive layer 64 is formed) that is adhesively fixed to the skin.
Therefore, by adhesively fixing the adhesive sheet portion to the skin while tension is applied to the mounting portion 60, as shown in FIG. 6, the protrusion 12 is pressed against the skin 91 to bring the heating tool 100 into contact with the skin 91. It can be attached to a living body.

The portion of the living body to which the heater 100 is attached is not particularly limited. For example, the heating device 100 can be attached to the body such as shoulders and back, the arms such as wrists, the legs such as the soles of the feet, and the head such as around the eyes.

In the state before the use of the heating tool 100, a release paper 65 covering the adhesive layer 64 is attached to each mounting band portion 61.
When the heating tool 100 is used, the heating tool 100 can be attached to a living body by peeling off the release paper 65 from each wearing band portion 61 and attaching the adhesive layer 64 of each mounting band portion 61 to the skin 91.

Here, in the case of the present embodiment, the mounting portion constituent sheet 63 is made of a material that can be expanded and contracted in the longitudinal direction of the mounting portion constituent sheet 63. That is, each mounting portion constituent sheet 63 can be expanded and contracted in the direction of arrow B in FIG.
As described above, the mounting portion 60 is configured to include the stretchable sheet portion. In the case of the present embodiment, for example, the entire mounting portion constituent sheet 63 is a telescopic seat portion.

By attaching the adhesive layer 64 at the tip of the mounting band portion 61 to the skin 91 in a state where the mounting band portion 61 is stretched in the longitudinal direction of the mounting band portion 61, the protruding portion 12 is attached to the skin with a more sufficient pressure contact force. It can be pressed against 91.

Hereinafter, examples of materials and characteristics of each part of the heater 100 will be described in more detail.

As the oxidizable metal in the exothermic material 30, an oxidizable metal usually used as a material for this type of exothermic material can be used. As the oxidizing metal, it is preferable to use a powder or fibrous metal from the viewpoint of handleability, moldability and the like.

Examples of the oxidizable metal having a powder form include iron powder, aluminum powder, zinc powder, manganese powder, magnesium powder, calcium powder and the like, and among these, iron is used in terms of handleability and manufacturing cost. Powder is preferably used.
As an oxidizable metal having a powder form, the particle size (hereinafter, the particle size is the maximum length in the powder form, or a dynamic light scattering method or a laser diffraction method) because the reaction is well controlled. It is preferable to use one having a particle size of 0.1 μm or more and 300 μm or less, and one having a particle size of 0.1 μm or more and 150 μm or less and containing 50% by mass or more. More preferred.

Examples of the oxidizable metal having a fibrous morphology include steel fibers, aluminum fibers, magnesium fibers and the like. Among these, steel fiber, aluminum fiber and the like are preferably used from the viewpoint of handleability and manufacturing cost. As the oxidizable metal having a fibrous morphology, it is preferable to use a metal having a fiber length of 0.1 mm or more and 50 mm or less and a thickness of 1 μm or more and 1000 μm or less from the viewpoint of heat generation performance and the like.

The content of the oxidizable metal in the exothermic material 30 is preferably 30% by mass or more and 80% by mass or less, and more preferably 40% by mass or more and 70% by mass or less.
By setting this content to 30% by mass or more, the exothermic temperature of the protrusion 12 filled with the exothermic material 30 can be sufficiently raised to the extent that a person feels hot to the touch with a fingertip or the like, which is preferable.
By setting this content to 80% by mass or less, the exothermic material 30 has sufficient air permeability, and as a result, a sufficient reaction occurs up to the center of the exothermic material 30, and the exothermic temperature of the exothermic material 30 is sufficiently increased. Can be raised. In addition, the exothermic time of the exothermic material 30 can be made sufficiently long, and the water supply by the water retaining agent can be made sufficient.
Here, the content of the oxidizable metal in the heat generating material 30 is measured by an ash content test according to JIS P8128, or when the oxidizable metal is iron, the property that magnetization occurs when an external magnetic field is applied is utilized. It can be measured by a vibration sample type magnetization measurement test or the like.

As the water-retaining agent in the exothermic material 30, a water-retaining agent usually used as a material for this kind of exothermic material can be used. This water retention agent acts as a water retention agent. Further, this water retention agent may also have a function as a feeder that retains oxygen supplied to the oxidizable metal and supplies the oxygen to the oxidizable metal.
As the water retention agent, for example, an inorganic material is preferably used.
As the water retention agent, for example, a porous material is preferably used.
Examples of the water retention agent include activated carbon (palm shell charcoal, charcoal powder, calendar blue charcoal, peat, subcarbon), carbon black, acetylene black, graphite, zeolite, pearlite, vermiculite, silica, canclinite, florite and the like. Of these, activated carbon is preferably used because it has water retention ability, oxygen supply ability, and catalytic ability.
As the water retaining agent, it is preferable to use a powdery material having a particle size of 0.1 μm or more and 500 μm or less, and a particle size of 0.1 μm or more and 200 μm, from the viewpoint of forming an effective contact state with the metal to be oxidized. It is more preferable to contain 50% by mass or more of the powdery substance.
As the water retention agent, those having a form other than the powder form as described above can be used, and for example, those having a fibrous form such as activated carbon fiber can also be used.

The content of the water-retaining agent in the exothermic material 30 is preferably 1% by mass or more and 50% by mass or less, and more preferably 2% by mass or more and 40% by mass or less.
By setting this content to 1% by mass or more, the water required for sustaining the reaction to the extent that the temperature of the oxidizable metal rises above the human body temperature by the oxidation reaction can be sufficiently accumulated in the exothermic material 30. Further, since the air permeability of the exothermic material 30 is sufficiently ensured, oxygen can be sufficiently supplied to the exothermic material 30, and the exothermic efficiency of the exothermic material 30 can be improved.
By setting this content to 50% by mass or less, the heat capacity of the exothermic material 30 with respect to the obtained calorific value can be suppressed, so that the exothermic temperature rise becomes large, and a temperature rise that a person can feel as warm can be obtained.

The exothermic material 30 may contain an electrolyte.
As the electrolyte, an electrolyte usually used as a material for this kind of exothermic material can be used.
Examples of this electrolyte include chlorides and hydroxides of alkali metals, alkaline earth metals or heavy metals. Among these, various chlorides such as sodium chloride, potassium chloride, calcium chloride, magnesium chloride and iron chloride (first and second) are preferably used because of their excellent conductivity, chemical stability and production cost. These electrolytes may be used alone or in combination of two or more.
The content of the electrolyte in the heating material 30 is preferably 0.5% by mass or more and 24% by mass or less, and more preferably 1% by mass or more and 10% by mass or less in terms of the water mass ratio in the heating material 30. ..
By setting this content to 0.5% by mass or more, the oxidation reaction of the exothermic material 30 can be sufficiently promoted, and in order to secure the electrolyte necessary for the exothermic function, the ratio of the water content of the exothermic material 30 is also increased. It can be suppressed, and as a result, the exothermic temperature rise can be sufficiently ensured.
By setting this content to 24% by mass or less, the air permeability of the exothermic material 30 can be improved, and in order to secure the electrolyte required for the exothermic function, the water content in the exothermic material 30 is set to a certain size. It is preferable because sufficient water is supplied to the metal to be oxidized, the exothermic performance is excellent, and the electrolyte can be uniformly mixed in the exothermic material 30.

Further, a thickener, a flocculant, and other additives may be added to the exothermic material 30.
In order to uniformly fill the cavity 13 of the fine protrusion 12, the exothermic material 30 is preferably filled in the cavity 13 in the state of a slurry having fluidity. In this case, the exothermic material 30 is filled. Preferably contains a thickener. As the thickener, a substance that absorbs water to increase the consistency or imparts thixotropy, for example, a water-soluble polymer material can be mainly used.

The protrusion 12 of the heating tool 100 preferably has a heat generation reaching temperature of 35 ° C. or higher and 98 ° C. or lower, more preferably 38 ° C. or higher and 70 ° C. or lower, and further preferably 42 ° C. or higher and 60 ° C. or lower. ..
The heat generation reaching temperature of the heating tool 100 can be measured by the same method as JIS S4100.

In the sheet 10 in which the exothermic material 30 is filled in the protrusion 12, the amount of water vapor generated in 10 minutes per unit weight (1 g) of the exothermic material 30 is preferably 20 mg / g or more and 250 mg / g or less, preferably 70 mg. It is more preferably / g or more and 180 mg / g or less.
Here, this amount of water vapor (amount of water vapor generated) is measured, for example, as follows.
The equipment used for the measurement is an aluminum measuring chamber (volume 4.2L), an inflow path for inflowing dehumidified air (humidity less than 2%, flow rate 2.1L / min) into the lower part of the measuring chamber, and the measuring chamber. It is equipped with an outflow path that allows air to flow out from the top. An inlet thermo-hygrometer and an inlet flow meter are attached to the inflow path. On the other hand, an outlet thermo-hygrometer and an outlet flow meter are attached to the outflow path. A thermometer (thermistor) is installed in the measurement room. As the thermometer, one having a temperature resolution of about 0.1 ° C. is used.
At the measurement environment temperature of 30 ° C. (30 ± 1 ° C.), the thermometer 100 is taken out from the packaging bag, placed in the measurement chamber with one side 10a side of the sheet 10 facing up, and a metal ball (mass 4.5 g) is attached. Place the thermometer on it. In this state, dehumidified air is flowed from the lower part of the measuring chamber, and the difference in absolute humidity before and after the air flows into the measuring chamber is obtained based on the temperature and humidity measured by the inlet thermo-hygrometer and the outlet thermo-hygrometer. Further, the amount of water vapor released by the heater 100 is calculated based on the flow rates measured by the inlet flow meter and the outlet flow meter. The amount of water vapor generated from the start of measurement to the elapse of 10 minutes is measured.

Examples of the material of the nonwoven fabric sheet 15 include synthetic fibers, natural fibers or composite fibers thereof, and examples of the manufacturing method include a spunbond method, a needle punch method, a spunlace method, a melt blow method, a flash spinning method, an air raid method and an air through method. And so on.

In the case of the present embodiment, the nonwoven fabric sheet 15 is configured to include a fiber made of a first resin material and a binding portion made of a second resin material and binding the fibers to each other. ing.
The first resin material constituting the nonwoven fabric sheet 15 is not particularly limited, and may be, for example, polyethylene, polypropylene, nylon, rayon, polystyrene, acrylic, vinylon, cellulose, aramid, polyvinyl alcohol, polyethylene naphthalate or polyethylene terephthalate. Among them, polyethylene terephthalate (PET) is preferable.
The second resin material constituting the nonwoven fabric sheet 15 is not particularly limited, but is preferably a material having a lower melting point than the first resin material constituting the nonwoven fabric sheet 15. The second resin material constituting the nonwoven fabric sheet 15 may be, for example, polyethylene, polypropylene, ethylene vinyl acetate resin, or low melting point PET (copolymerized polyester), and in particular, polyethylene or low melting point PET. It is preferable to have.
The fiber constituting the non-woven fabric sheet 15 may have a core-sheath structure including a core made of a first resin material and a sheath made of a second resin material.

The content of the first resin material in the nonwoven fabric sheet 15 is higher than the content of the second resin material in the nonwoven fabric sheet 15.
Preferably, the content of the first resin material in the nonwoven fabric sheet 15 is 60% by mass or more and 95% by mass or less. The content of the second resin material in the nonwoven fabric sheet 15 is 5% by mass or more and 40% by mass or less.
By setting the contents of the first resin material and the second resin material in the nonwoven fabric sheet 15 in this way, the rigidity of the nonwoven fabric sheet 15 can be sufficiently ensured while sufficiently ensuring the air permeability of the nonwoven fabric sheet 15. Can be done.

The basis weight of the nonwoven fabric sheet 15 is preferably 15 g / m ² or more and 500 g / m ² or less, particularly preferably 30 g / m ² or more and 350 g / m ² or less. When the basis weight of the non-woven fabric sheet 15 is 15 g / m ² or more, sufficient strength of the sheet 10 can be ensured, and the temperature of the exothermic material 30 can be appropriately relaxed and transmitted to the skin. When the basis weight of the non-woven fabric sheet 15 is 500 g / m ² or less, the temperature of the exothermic material 30 can be efficiently transmitted to the skin via the sheet 10.

The thickness of the base 11 of the sheet 10 is preferably 0.03 mm or more and 2.6 mm or less, particularly preferably 0.08 mm or more and 1.25 mm or less. When the thickness of the base portion 11 is 0.03 mm or more, the morphological retention of the sheet 10 (particularly the morphological retention of the protrusions 12) and, by extension, the morphological retention of the main body 50 are good. When the thickness of the base 11 is 2.6 mm or less, the heat transfer property of the sheet 10 is good.
The moisture permeability of the sheet 10 is preferably, for example, 1000 g / ( ^m 2.24 h) or ^more and 17000 g / ( ^m 2.24 h) or less, and 2000 g / (m 2.24 h) or ^more and 12000 g / (m 2.24 h). The following is more preferable.

In the case of this embodiment, the moisture permeability of the second sheet 20 is lower than the moisture permeability of the sheet 10.
The moisture permeability of the ^second sheet 20 is preferably, for example, 2000 g / (m 2.24 h) or less, particularly 1000 g / ( ^m 2.24 h) or less.
By setting the moisture permeability of the second sheet 20 in such a range, the direction of generation of water vapor due to the heat generation of the exothermic material 30 can be regulated by the second sheet 20. For example, oxygen is supplied to the exothermic material 30 from the sheet 10 side, the generation of water vapor from the second sheet 20 can be suppressed, and the water vapor can be generated mainly from the sheet 10 side.

The second sheet 20 preferably has a basis weight of 10 g / m ² or more and 200 g / m ² or less, and 20 g / m ² or more and 100 g / m ² or less. By setting the basis weight of the second sheet 20 in such a range, the direction of generation of water vapor due to heat generation can be regulated by the second sheet 20.

Examples of the second sheet 20 include a sheet containing a resin film made of a resin such as a polyolefin such as polyethylene and polypropylene, polyester, polyamide, polyurethane, polystyrene, nylon, polyvinylidene chloride, and a polyethylene-vinyl acetate copolymer. In particular, by using a sheet in which an inorganic filler such as titanium oxide is blended in the resin, the concealing property of the heat generating material 30 by the second sheet 20 is improved. The second sheet 20 may be used by stacking a plurality of sheets.
More specifically, examples of the second sheet 20 include a laminated sheet of paper and the resin film, and a laminated sheet of a non-woven fabric and the resin film. In this case, the resin film is on the inner surface side (water absorption sheet 40 side) of the second sheet 20, and the paper or non-woven fabric constituting the second sheet 20 is arranged on the outer surface side (rear surface side) of the second sheet 20. Further, in order to suppress heat dissipation to the back surface side, a non-woven fabric may be laminated on the rear surface side of the second sheet 20.

When the water-absorbent sheet 40 is a water-absorbent polymer sheet, the water-absorbent polymer constituting the water-absorbent polymer sheet is polymer particles having water absorption.
The shape of the water-absorbent polymer is not particularly limited and may be spherical, lumpy, grape-like, amorphous, porous, powdery or fibrous. The average particle size of the water-absorbent polymer can be 100 μm or more and 1000 μm or less, preferably 150 μm or more and 650 μm or less, in order to prevent the water-absorbent polymer from falling off from the main body 50 or the movement of the water-absorbent polymer. It can be more preferably 200 μm or more and 500 μm or less.
As an example, in order to obtain a water-absorbent polymer, one or more kinds of monomers selected from the following monomers are polymerized and, if necessary, cross-linked. The polymerization method here is not particularly limited, and various generally known superabsorbent polymers such as a reverse phase suspension polymerization method and an aqueous solution polymerization method can be adopted. Then, the polymer obtained by the polymerization is subjected to treatments such as pulverization and classification as necessary to adjust the polymer to a desired average particle size, and is treated with inorganic fine particles as necessary to absorb water. A sex polymer is obtained.
As the monomer used in producing the water-absorbent polymer, a water-soluble monomer having a polymerizable unsaturated group can be used. More specifically, the monomer includes an olefin-based unsaturated carboxylic acid or a salt thereof, an olefin-based unsaturated carboxylic acid ester, an olefin-based unsaturated sulfonic acid or a salt thereof, an olefin-based unsaturated phosphoric acid or a salt thereof, and an olefin-based monomer. Examples thereof include vinyl monomers having polymerizable unsaturated groups such as unsaturated phosphoric acid esters, olefin-based unsaturated amines, olefin-based unsaturated ammonium salts, and olefin-based unsaturated amides.

The thickness of the water absorbing sheet 40 is not particularly limited, but can be, for example, 0.05 mm or more and 2 mm or less, preferably 0.1 mm or more and 1 mm or less.
When the thickness of the water absorption sheet 40 is 0.05 mm or more, the water absorption sheet 40 can sufficiently absorb water. Further, since the thickness of the water absorbing sheet 40 is 2 mm or less, the main body 50 can be made sufficiently thin.
The thickness of the water absorption sheet 40 can be measured by, for example, a peacock gauge measuring method.

As the water-absorbing sheet 40, a sheet material capable of absorbing and retaining moisture and having flexibility is used. Examples of such a sheet material include fiber sheets such as paper, non-woven fabric, woven fabric, and knitting made from fibers, and porous bodies such as sponges. Examples of the fiber used as the material of the water absorbing sheet 40 include those containing natural fibers such as plant fibers and animal fibers as main components and those containing chemical fibers as main components. Plant fibers include, for example, cotton, cabock, wood pulp, non-wood pulp, peanut protein fiber, corn protein fiber, soybean protein fiber, mannan fiber, rubber fiber, hemp, Manila hemp, sisal hemp, New Zealand hemp, Rafu hemp, palm, etc. One or more selected from rush and straw can be mentioned. Animal fibers include, for example, one or more selected from wool, goat, mohair, cashmere, alpaca, angora, camel, vicuna, silk, feathers, down, feather, argin fiber, chitin fiber, and gazein fiber. Can be mentioned. As the chemical fiber, for example, one or more selected from rayon, acetate, and cellulose can be used.

Among them, the water-absorbing sheet 40 preferably contains the above-mentioned fiber material composed of fibers and a water-absorbing polymer.
Assuming that the water-absorbing sheet 40 contains the component (a) fiber material and the component (b) water-absorbing polymer, the form of the water-absorbing sheet 40 is such that (i) the component (a) and the component (b) are uniformly mixed. A sheet in which the component (b) is arranged between the same or different sheets containing the component (a), and a sheet obtained by spraying the component (b) (iii). Three forms of the shape can be exemplified.
Of these, the one in the form of (ii) is preferable. In the water-absorbing sheet 40 in the form of (ii), for example, the water-absorbing polymer of the component (b) is uniformly sprayed on the sheet containing the component (a), and 200 g / m ² of water is sprinkled on the sheet. After spraying, the same or different sheets containing the component (a) are further laminated, and press-dried at a pressure of 100 ± 0.5 ° C. and 5 kg / cm ² to have a water content of 5% by mass or less. It can be manufactured by drying until it becomes.

By using a hydrogel material that can absorb and retain a liquid 20 times or more its own weight and can be gelled as the water-absorbing polymer, sufficient water-absorbing performance of the water-absorbing sheet 40 can be ensured. Examples of the shape of the particles of the water-absorbent polymer include spherical shape, lump shape, botryoidal shape, fibrous shape and the like. The particle size of the particles of the water-absorbent polymer is preferably 1 μm or more, more preferably 10 μm or more. The particle size of the particles of the water-absorbent polymer is preferably 1000 μm or less, more preferably 500 μm or less. The particle size of the water-absorbent polymer particles is measured by a dynamic light scattering method, a laser diffraction method, or the like.

Specific examples of the water-absorbent polymer are selected from polyacrylic acid and salts thereof, such as starch, crosslinked carboxylmethylated cellulose, acrylic acid or a polymer or copolymer of an alkali metal salt of acrylic acid, and a polyacrylate graft polymer. One kind or two or more kinds are mentioned. Above all, it is preferable to use polyacrylic acid and its salt, such as a polymer or copolymer of acrylic acid or an alkali metal salt of acrylic acid, and a polyacrylate graft polymer, in order to enhance the water absorption performance of the water absorption sheet 40.

The proportion of the particles of the component (b) water-absorbent polymer in the water-absorbent sheet 40 is preferably 10% by mass or more in a dry state, and more preferably 20% by mass or more. The proportion of the particles of the component (b) water-absorbent polymer in the water-absorbent sheet 40 is preferably 70% by mass or less in a dry state, and more preferably 65% by mass or less.

The water absorption sheet 40 preferably has a basis weight of 20 g / m ² or more and 250 g / m ² or less in a dry state, more preferably 40 g / m ² or more and 220 g / m ² or less, and further preferably 60 g / m. It is m ² or more and 180 g / m ² or less. The basis weight of the component (b) contained in the water absorbing sheet 40 is preferably 5 g / m ² or more and 200 g / m ² or less in a dry state, and more preferably 10 g / m ² or more and 170 g / m ² or less. More preferably, it is 30 g / m ² or more and 130 g / m ² or less.

In the case of the present embodiment, the water-absorbing sheet 40 includes wood pulp paper (basis weight 20 g / m ² ), water-absorbent polymer (spherical, average particle diameter 300 μm, basis weight 90 g / m ² ), and wood pulp paper. A water-absorbent polymer sheet in which (basis weight 30 g / m ² ) is laminated and integrated can be used.

The material of the mounting portion constituent sheet 63 is not particularly limited, but may be, for example, a stretchable non-woven fabric. Examples of the material of this nonwoven fabric include synthetic fibers, natural fibers or composite fibers thereof.
However, the mounting portion constituent sheet 63 is not limited to the non-woven fabric, and may be, for example, a woven fabric containing rubber fibers.

The material of the adhesive layer 64 is not particularly limited, but for example, a rubber-based, acrylic-based, silicone-based, emulsion-based, hot-melt-based, water-gel-based, or other adhesive material can be used.

Next, a method for manufacturing a heating device according to the present embodiment will be described.
The method for manufacturing a heating tool according to the present embodiment includes a step of preparing a non-woven fabric sheet 18 (FIG. 5A) and a step of preparing a sheet containing the non-woven fabric sheet 18 (for example, the non-woven fabric sheet 18). Here, the nonwoven fabric sheet 18 each has at least two endothermic peaks with a phase transition, of which the first endothermic peak exists in the temperature range of 60 ° C. or higher and 180 ° C. or lower, and the second endothermic peak is the first. It exists on the high temperature side of the endothermic peak.
Further, this manufacturing method includes a step of hot-pressing the sheet at a temperature intermediate between the first endothermic peak and the second endothermic peak to form a convex protrusion 12 on one surface side of the sheet, and a sheet. The step of arranging the exothermic material 30 on the other surface side of the above is provided.

More specifically, in the case of the present embodiment, the nonwoven fabric sheet 18 is composed of a fiber made of a first resin material and a second resin material having a melting point lower than that of the first resin material. ..
In the step of forming the protrusion 12, the sheet is hot-pressed at a temperature intermediate between the melting point of the first resin material and the melting point of the second resin material, and the protrusion 12 having a protrusion on one surface side is formed on this sheet. Form.
In the case of the present embodiment, the melting point of the first resin material is the first endothermic peak, and the melting point of the second resin material is the second endothermic peak.

First, the non-woven fabric sheet 18 that is the basis of the non-woven fabric sheet 15 is prepared.

Here, the nonwoven fabric sheet 18 is configured to include, for example, a first fiber made of a first resin material and a second fiber made of a second resin material (with the first fiber). In the case of mixed cotton with the second fiber). However, the fiber constituting the non-woven fabric sheet 18 may have a core-sheath structure including a core made of a first resin material and a sheath made of a second resin material.

Next, the non-woven fabric sheet 18 is hot-pressed to form the sheet 10 on which the protrusions 12 are formed.

Here, the temperature of the hot press is set to a temperature intermediate between the melting point of the first resin material and the melting point of the second resin material. That is, the temperature of the hot press is a temperature lower than the melting point of the first resin material and higher than the melting point of the second resin material.
As a result, the second resin material can be melted while the first resin material cannot be melted. Therefore, the fiber composed of the first resin material (the fiber is a core) via the melted second resin material. It may be the core part of the sheath structure). That is, the melted second resin material constitutes a binding portion for binding the fibers made of the first resin material.
As a result, it is possible to sufficiently secure the rigidity of the sheet 10 while ensuring the air permeability of the sheet 10. That is, the air permeability and rigidity of the base portion 11 can be sufficiently ensured, and the protrusion 12 also has sufficient rigidity as a whole while ensuring the air permeability from the base end to the tip of the protrusion portion 12. Can be.

Here, the temperature of the hot press is as low as possible (for example, the melting point of the second resin material + 30 ° C. or lower, preferably the melting point of the second resin material + 20 ° C. or lower) within a range in which the second resin material can be sufficiently melted. It is preferable to set the temperature). By doing so, the non-woven fabric sheet 15 after hot pressing can be made to have the texture of the non-woven fabric, and the feel of the main body 50 is improved.

Here, for example, as shown in FIG. 5A, the protrusion 12 can be formed on the sheet 10 by using the first mold 70 and the second mold 80 arranged so as to face each other.
The first mold 70 includes a flat surface 71 facing the second mold 80, and a plurality of protrusions 72 protruding from the flat surface 71 toward the second mold 80.
The second mold 80 includes a flat surface 81 facing the first mold 70, and a plurality of recesses 82 formed in portions of the flat surface 81 facing each protrusion 72.
As shown in FIG. 5B, the first mold 70 and the second mold 80 are brought close to each other to pressurize the sheet 10 in the thickness direction, and the sheet is pressed by the first mold 70 and the second mold 80. By heating the 10th, a plurality of protrusions 12 are formed on the sheet 10. In the sheet 10, the portions corresponding to the flat surfaces 71 and 81 of the first mold 70 and the second mold 80 are the base portion 11, and correspond to the protrusions 72 and the recesses 82 of the first mold 70 and the second mold 80. The portion to be formed is the protrusion 12.

After forming the protrusion 12 on the sheet 10 in this way, the exothermic material 30 is filled in the protrusion 12.
For this purpose, a raw material composition (slurry) of the exothermic material 30 containing an oxidizing metal, a water retaining agent and water is prepared, and the raw material composition is poured into each protrusion 12.
As a result, the exothermic material 30 can be filled along the shape of the inner peripheral surface of the protrusion 12. Therefore, the shape of the exothermic material 30 can be, for example, a cone-like shape or a frustum-like shape similar to the shape of the protrusion 12.

After filling each protrusion 12 of the sheet 10 with the exothermic material 30, the water absorbing sheet 40 is laminated on the base 11 of the sheet 10.
Further, the second sheet 20 is laminated on the water absorbing sheet 40, and the peripheral edge portion of the second sheet 20 and the peripheral edge portion of the sheet 10 are joined to each other.
The second sheet 20 and the sheet 10 may be joined by using an adhesive or by heat sealing.
In this way, the main body portion 50 can be manufactured.

Next, the base end portions 66 of the pair of mounting band portions 61 are joined to the main body portion 50, respectively.
The mounting band portion 61 may be joined to the main body portion 50 by using an adhesive or by heat sealing.
In this way, the heater 100 is manufactured.

According to the first embodiment as described above, the heating tool 100 includes a sheet 10 having a convex protrusion 12 on one surface 10a side and a heat generating material 30 arranged on the other surface 10b side of the sheet 10. The sheet 10 includes a non-woven fabric sheet 15, and the non-woven fabric sheet 15 includes fibers made of a first resin material and a second resin material having a lower melting point than the first resin material. It is configured to include a binding portion that binds the fibers to each other.
The sheet 10 is a non-woven fabric containing a fiber made of a first resin material and a binding portion made of a second resin material having a lower melting point than the first resin material and binding the fibers to each other. Since the sheet 15 is provided, the rigidity of the sheet 10 and the rigidity of the protrusion 12 of the sheet 10 can be sufficiently ensured. Therefore, it is possible to sufficiently press the skin of a living body such as a human body by the protrusion 12.

In particular, in the case of the present embodiment, since the sheet 10 is configured to include the non-woven fabric sheet 15, not only the rigidity of the sheet 10 and the rigidity of the protrusion 12 can be sufficiently ensured, but also the sheet 10 is ventilated. Has sex.
Thereby, the sufficient pressing action of the skin of the living body by the protrusion 12 and the releasing action of water vapor through the sheet 10 can be compatible with each other.

Further, as described above, the heating tool 100 is provided with the protrusion 12, and the exothermic material 30 is composed of an oxidizable metal, a water retaining agent, and water, so that acupuncture and fire can be applied. Without using it, the living body can be heated while being locally pressed by the protrusion 12.

Further, since the heating tool 100 includes a mounting portion 60 for mounting the heating tool 100 on the living body in a state where the protrusion 12 is pressed against the skin, the heating tool 100 can be easily mounted on the living body. At the same time, it is possible to perform local pressing and heating of the living body while doing other things such as watching TV or doing household chores.

Next, a modification of the planar shape of the sheet 10, the arrangement of the protrusions 12, and the shape of the protrusions 12 will be described with reference to FIGS. 7 (a) to 7 (k).

<Modification 1>
7 (a) and 7 (b) are views for explaining a modified example 1 of the planar shape of the sheet 10 and the arrangement of the protrusions 12, of which FIG. 7 (a) is a plan view and FIG. (B) is a cross-sectional view taken along the line AA of FIG. 7 (a).
In the case of this modification, the protrusions 12 having the same shape as that of the above embodiment are arranged in a houndstooth pattern, and the sheet 10 is formed with, for example, three horizontal rows, for a total of ten protrusions 12.
The planar shape of the sheet 10 is formed, for example, into a hexagonal shape. The planar shape of the main body 50 in the case of this modification is the same as the planar shape of the sheet 10.

<Modification 2>
7 (c) and 7 (d) are views for explaining a modification 2 of the planar shape of the sheet 10, the arrangement of the protrusions 12, and the shape of the protrusions 12, of which FIG. 7 (c) is shown. Is a plan view, and FIG. 7 (d) is a cross-sectional view taken along the line AA of FIG. 7 (c).
In the case of this modification, the protrusion 12 is formed in a conical trapezoidal shape. That is, the top of the protrusion 12 is formed flat.
In the case of this modification, the arrangement of the protrusion 12 and the planar shape of the sheet 10 (and the main body 50) are the same as those of the modification 1.

<Modification 3>
7 (e) and 7 (f) are views for explaining a modified example 3 of the planar shape of the sheet 10, the arrangement of the protrusions 12, and the shape of the protrusions 12, of which FIG. 7 (e) is shown. Is a plan view, and FIG. 7 (f) is a cross-sectional view taken along the line AA of FIG. 7 (e).
In the case of this modification, the sheet 10 has a plurality of types of protrusions 12 having different shapes from each other.
Further, in the case of this modification, the sheet 10 has a plurality of types of protrusions 12 having different dimensions from each other.

More specifically, in the case of this modification, one protrusion 12 (hereinafter, first protrusion 12a) is arranged at the center of the sheet 10, and a plurality of (for example, eight) protrusions 12a are arranged around the first protrusion 12a. The protrusions 12 (hereinafter referred to as the second protrusions 12b) are arranged side by side on the circumference at equal intervals.
Further, the diameter of the first protrusion 12a is larger than the diameter of the second protrusion 12b. That is, the dimensions of the first protrusion 12a and the dimensions of the second protrusion 12b are different from each other. For example, when viewed in the direction perpendicular to the surface of the sheet 10, the outer dimensions of the first protrusion 12a are the first. 2 It is larger than the external dimensions of the protrusion 12b.
The height dimension of the first protrusion 12a is, for example, equal to the height dimension of the second protrusion 12b. Therefore, the inclination angle of the first protrusion 12a is gentler than the inclination angle of the second protrusion 12b. That is, the shapes of the first protrusion 12a and the second protrusion 12b are different from each other.
Further, in the case of this modification, the planar shapes of the sheet 10 and the main body 50 are, for example, circular.

However, the height dimension of the first protrusion 12a may be larger than the height dimension of the second protrusion 12b, and by doing so, the central first protrusion 12a more sufficiently provides the skin of the living body. Can be squeezed.
Further, the height dimension of the second protrusion 12b may be larger than the height dimension of the first protrusion 12a, and by doing so, the skin of the living body can be more sufficiently covered by the surrounding second protrusion 12b. Can be squeezed.

<Modification example 4>
7 (g) and 7 (h) are views for explaining a modified example 4 of the planar shape of the sheet 10 and the arrangement of the protrusions 12, of which FIG. 7 (g) is a plan view and FIG. (H) is a cross-sectional view taken along the line AA of FIG. 7 (g).
In the case of this modification, a plurality of (for example, nine) protrusions 12 are arranged in a square grid pattern. Further, the planar shape of the sheet 10 and the main body 50 is a square shape with rounded corners.

<Modification 5>
7 (i) and 7 (j) are views for explaining a modified example 5 of the planar shape of the sheet 10, the arrangement of the protrusions 12, and the shape of the protrusions 12, of which FIG. 7 (i) is shown. Is a plan view, and FIG. 7 (j) is a cross-sectional view taken along the line AA of FIG. 7 (i).
In the case of this modification, the sheet 10 has a plurality of types of protrusions 12 having different shapes from each other.
Further, in the case of this modification, the sheet 10 has a plurality of types of protrusions 12 having different dimensions from each other.

More specifically, in the case of this modification, the planar shapes of the sheet 10 and the main body 50 are the same as those of the modifications 1 and 2, for example. A horizontally long oval protrusion 12 (hereinafter referred to as a first protrusion 12a) is arranged at the center of the sheet 10, and a plurality of (for example, eight) protrusions are arranged around the first protrusion 12a. 12 (hereinafter, the second protrusion 12b) is arranged.
The top of the first protrusion 12a has a horizontally long ridgeline (see FIG. 7 (j)).
The arrangement area of the first protrusion 12a in the sheet 10 of the present modification corresponds to the arrangement area of the two protrusions 12 in the central portion of the sheets 10 of the modifications 1 and 2. That is, the dimensions of the first protrusion 12a and the dimensions of the second protrusion 12b are different from each other. For example, when viewed in the direction perpendicular to the surface of the sheet 10, the outer dimensions of the first protrusion 12a are the first. 2 It is larger than the external dimensions of the protrusion 12b.
The planar shape of the first protrusion 12a is, for example, an oval shape. On the other hand, the planar shape of the second protrusion 12b is, for example, a circle. That is, the shapes of the first protrusion 12a and the second protrusion 12b are different from each other.

<Modification 6>
FIG. 7 (k) is a diagram for explaining a modified example 6 of the planar shape of the sheet 10 and the arrangement of the protrusions 12. In the case of this modification, a plurality of (for example, four) protrusions 12 are arranged side by side in a straight line.

[Second Embodiment]
Next, the second embodiment will be described with reference to FIGS. 8 to 9 (b).
The heating tool 100 according to the present embodiment is different from the heating tool 100 according to the first embodiment in the configuration of the sheet 10, and is otherwise the same as the heating tool 100 according to the first embodiment. It is configured in.

In the above-mentioned first embodiment, an example in which the sheet 10 is composed of one non-woven fabric sheet 15 has been described.
On the other hand, in the present embodiment, the sheet 10 is a nonwoven fabric sheet 15 (first nonwoven fabric sheet) constituting one outermost layer of the sheet 10 and a nonwoven fabric sheet 17 constituting the other outermost layer of the sheet 10. (Second non-woven fabric sheet) and a ventilation sheet 16 forming an intermediate layer located between the first non-woven fabric sheet and the second non-woven fabric sheet are included.
More specifically, in the case of the present embodiment, the sheet 10 has a three-layer structure of, for example, a non-woven fabric sheet 15, a ventilation sheet 16 and a non-woven fabric sheet 17, as shown in FIG.
However, the present invention is not limited to this example, and the sheet 10 may be configured to include the other three layers of the nonwoven fabric sheet 15, the ventilation sheet 16, and the nonwoven fabric sheet 17. As an example, the sheet 10 is provided with a two-layer ventilation sheet 16 between the nonwoven fabric sheet 15 and the nonwoven fabric sheet 17, and further includes a third nonwoven fabric sheet between the two layers of ventilation sheets 16. It may have a layered structure of 5 layers in total.

As described in the first embodiment described above, the nonwoven fabric sheet 15 includes a fiber made of a first resin material and a binding portion made of a second resin material and binding the fibers to each other. , Is included. Further, the nonwoven fabric sheet 17 also includes a fiber made of a first resin material and a binding portion made of a second resin material and binding the fibers to each other, similarly to the nonwoven fabric sheet 15. It is composed of.
That is, each of the first non-woven fabric sheet and the second non-woven fabric sheet has a fiber made of the first resin material and a binding portion made of the second resin material and binding the fibers to each other. , Is included.
However, the first resin material constituting the nonwoven fabric sheet 15 and the first resin material constituting the nonwoven fabric sheet 17 may be the same material or different materials from each other.
Further, the second resin material constituting the nonwoven fabric sheet 15 and the second resin material constituting the nonwoven fabric sheet 17 may be the same material or different materials from each other.
In the case of the present embodiment, for example, the nonwoven fabric sheet 15 and the nonwoven fabric sheet 17 are made of the same material, and the first resin material constituting the nonwoven fabric sheet 15 and the first resin material constituting the nonwoven fabric sheet 17 are composed of the same material. The materials are the same as each other, and the second resin material constituting the nonwoven fabric sheet 15 and the second resin material constituting the nonwoven fabric sheet 17 are the same materials.
Further, the basis weight of the nonwoven fabric sheet 17 can be appropriately set in the same manner as the basis weight of the nonwoven fabric sheet 15.
Even in the case of the present embodiment, the fibers constituting the non-woven fabric sheet 15 have a core-sheath structure including a core made of the first resin material and a sheath made of the second resin material. good.
Further, the fibers constituting the nonwoven fabric sheet 17 may also have a core-sheath structure including a core made of a first resin material and a sheath made of a second resin material.
The air permeability of the nonwoven fabric sheet 17 is the same as that of the nonwoven fabric sheet 15, preferably 1 second / 100 ml or more, and more preferably 3 seconds / 100 ml or more. Further, it is preferably 20000 seconds / 100 ml or less, and more preferably 10000 seconds / 100 ml or less.

The ventilation sheet 16 is configured to contain a third resin material having a melting point higher than that of the second resin material.

The air permeability of the ventilation sheet 16 is not particularly limited, but for example, the moisture permeability of the ventilation sheet 16 is 100 g / (m 2.24 h) or ^more and 13000 g / (m 2.24 h) or less, particularly ²⁰⁰ g / ( ^m 2.24 h). It is preferably 8000 g / ( ^m 2.24 h) or less. Since the moisture permeability of the ventilation sheet 16 is set in such a range, oxygen is promptly supplied to the exothermic material 30 through the sheet 10 when the heating tool 100 is taken out from the packaging material, and heat and steam are supplied from the exothermic material 30. Can be made to occur quickly, and the duration of fever can be sufficiently long. The moisture permeability of the ventilation sheet 16 can be measured by, for example, the JIS (Z0208) CaCl ₂ method, and the measurement conditions can be 40 ° C. and 90% RHM.
The ventilation sheet 16 may be breathable over the entire surface thereof, or may be partially breathable.
The ventilation sheet 16 preferably has a basis weight of 10 g / m ² or more and 200 g / m ² or less, particularly 20 g / m ² or more and 100 g / m ² or less. By setting the basis weight of the ventilation sheet 16 in such a range, it is possible to quickly generate heat and steam when the heating tool 100 is taken out from the packaging material, and the duration of heat generation is sufficiently long. Can be done.

The ventilation sheet 16 is a sheet made of a polyolefin such as polyethylene or polypropylene or a resin such as polyester, polyamide, polyurethane, polystyrene or a polyethylene-vinyl acetate copolymer, in which ventilation holes are mechanically formed, and these resins. A sheet mixed with an inorganic filler is exfoliated at the interface by stretching to provide fine vents, a sheet having fine vents formed by interfacial exfoliation of the crystal structure, and open cells produced by foam molding are used. Examples thereof include those having fine ventilation holes communicated with each other. Examples of the ventilation sheet 16 include synthetic pulp such as polyolefin, wood pulp, semi-synthetic fiber such as rayon and acetate, non-woven fabric formed from vinylon fiber, polyester fiber and the like, woven fabric, synthetic paper and paper. A plurality of ventilation sheets 16 can be stacked and used.

More specifically, as the ventilation sheet 16, a material in which a mixed sheet of polypropylene and calcium carbonate is interfacially exfoliated by stretching to form fine ventilation holes in the mixed sheet can be preferably used.
In the present embodiment, it is assumed that the ventilation sheet 16 is formed by stretching a mixed sheet of polypropylene and calcium carbonate, and the following description will be given.

Next, a method for manufacturing a heating device according to the present embodiment will be described.
The method for producing a heating tool according to the present embodiment also includes a non-woven sheet (for example, FIG. 9 (a)) containing a fiber composed of a first resin material and a second resin material having a melting point lower than that of the first resin material. ), And a step of preparing a sheet containing the non-woven sheet (for example, a laminated body of the non-woven sheet 18, the ventilation sheet 16 and the non-woven sheet 19 shown in FIG. 9A). A step of hot-pressing this sheet at a temperature intermediate between the melting point of the first resin material and the melting point of the second resin material to form a convex protrusion 12 on one surface side of the sheet, and the other of the sheets. A step of arranging the heat generating material 30 on the surface side of the surface is provided.

First, the non-woven fabric sheet 18, the breathable sheet 16, and the non-woven fabric sheet 19 which is the source of the non-woven fabric sheet 17 are prepared so as to overlap the non-woven fabric sheet 18, the breathable sheet 16, and the non-woven fabric sheet 19 in this order. These three sheets are laminated.

As described above, the nonwoven fabric sheet 18 is composed of, for example, a first fiber made of a first resin material and a second fiber made of a second resin material. However, the fiber constituting the non-woven fabric sheet 18 may have a core-sheath structure including a core made of a first resin material and a sheath made of a second resin material.
The non-woven fabric sheet 19 is also the same as the non-woven fabric sheet 18, for example.

Next, the sheet 10 on which the protrusions 12 are formed is formed by hot-pressing the laminated body of these three sheets (nonwoven fabric sheet 18, ventilation sheet 16 and non-woven fabric sheet 19) (FIG. 9 (a). ), See FIG. 9 (b)).

Also in this embodiment, the temperature of the hot press is set to a temperature intermediate between the melting point of the first resin material and the melting point of the second resin material. That is, the temperature of the hot press is a temperature lower than the melting point of the first resin material and higher than the melting point of the second resin material.
As a result, the second resin material can be melted while the first resin material cannot be melted. Therefore, the fiber composed of the first resin material (the fiber is a core) via the melted second resin material. It may be the core part of the sheath structure). That is, the melted second resin material constitutes a binding portion for binding the fibers made of the first resin material.
Therefore, while ensuring the breathability of the nonwoven fabric sheet 15 and the nonwoven fabric sheet 17, the rigidity of the nonwoven fabric sheet 15 and the nonwoven fabric sheet 17 can be sufficiently ensured, so that the breathability and rigidity of the sheet 10 are sufficiently ensured. Can be done. That is, the air permeability and rigidity of the base portion 11 can be sufficiently ensured, and the protrusion 12 also has sufficient rigidity as a whole while ensuring the air permeability from the base end to the tip of the protrusion portion 12. Can be.

Also in the case of this embodiment, the temperature of the hot press is as low as possible within the range where the second resin material can be sufficiently melted (for example, the temperature of the melting point of the second resin material + 30 ° C. or lower, preferably the temperature of the second resin material. It is preferable to set the melting point (temperature of +10 ° C. or lower). By doing so, the non-woven fabric sheet 15 and the non-woven fabric sheet 17 after hot pressing can have the texture of the non-woven fabric. In particular, the non-woven fabric sheet 17 located on the outer surface side of the main body 50 has the texture of a non-woven fabric, so that the main body 50 feels good to the touch.

In the case of the present embodiment, the temperature of the hot press is preferably set to a temperature lower than the melting point of the third resin material contained in the ventilation sheet 16 and lower than the stretching temperature of the ventilation sheet 16. As a result, the ventilation holes of the ventilation sheet 16 can be maintained even after the heat pressing, and the ventilation of the ventilation sheet 16 can be ensured.

As described above, in the method for manufacturing a heating tool according to the present embodiment, the sheet comprises a non-woven fabric sheet 18 (first non-woven fabric sheet) constituting one outermost layer of the sheet and the other outermost layer of the sheet. The non-woven fabric sheet 19 (second non-woven fabric sheet) and the ventilation sheet 16 forming an intermediate layer located between the first nonwoven fabric sheet and the second nonwoven fabric sheet are included. Reference numeral 16 is configured to include a third resin material having a higher melting point than the second resin material.
Then, in the step of forming the convex protrusion 12 on one surface side of the sheet, the sheet is hot-pressed at a temperature intermediate between the melting point of the second resin material and the melting point of the third resin material.

As described above, in the present embodiment, these three layers of sheets (nonwoven fabric sheet 18, The protrusion 12 is formed by hot-pressing the ventilation sheet 16 and the non-woven fabric sheet 19).
Thereby, at the time of hot pressing, both sides of the ventilation sheet 16 can be protected by the non-woven fabric sheets 18 and 19, respectively. Therefore, even when the ventilation sheet 16 included in the sheet 10 subjected to the heat press contains a third resin material having high crystallinity such as polypropylene, while suppressing the breakage of the ventilation sheet 16. , The protrusion 12 can be formed on the sheet 10. Therefore, the sheet 10 can be made to have uniform air permeability over the entire surface.
Further, the sheet 10 after hot pressing has a laminated structure in which the non-woven fabric sheets 15 and 17 are arranged on both sides of the ventilation sheet 16, respectively. Therefore, the rigidity of the seat 10 can be secured more easily, and in particular, the rigidity of the protrusion 12 can be secured well.

In the sheet 10 after hot pressing, the second resin material of the nonwoven fabric sheet 15 and the second resin material of the nonwoven fabric sheet 17 may or may not be bound to the ventilation sheet 16. It does not have to be.
In the case of the present embodiment, the second resin material of the nonwoven fabric sheet 15 and the second resin material of the nonwoven fabric sheet 17 are not bound to the ventilation sheet 16, thereby making the ventilation sheet 16 breathable. It can be maintained well.

Since the manufacturing process after forming the protrusion 12 on the sheet 10 is the same as that of the first embodiment, the description thereof will be omitted.
In this way, the heating tool 100 according to the present embodiment is manufactured.

According to the second embodiment, the sheet 10 includes a non-woven fabric sheet 15 (first non-woven fabric sheet) constituting one outermost layer of the sheet 10 and a non-woven fabric sheet 17 (a first non-woven fabric sheet) constituting the other outermost layer of the sheet 10. A second non-woven fabric sheet) and a ventilation sheet 16 forming an intermediate layer located between the first non-woven fabric sheet and the second non-woven fabric sheet are included. As a result, the rigidity of the sheet 10 can be more easily secured, and in particular, the rigidity of the protrusion 12 can be secured well, and the skin of the living body can be more sufficiently pressed by the protrusion 12.
Further, since the ventilation sheet 16 is configured to include the third resin material and the melting point of the third resin material is higher than the melting point of the second resin materials constituting the nonwoven fabric sheets 15 and 17, the ventilation sheet 16 is composed of the ventilation sheet 16. It is possible to easily obtain a heating tool 100 having a structure in which the air permeability is well maintained.

In the second embodiment, an example in which a ventilation sheet 16 is formed by stretching a mixed sheet of polypropylene and calcium carbonate has been mainly described, but the present invention is not limited to this example. For example, the ventilation sheet 16 may be manufactured by forming a plurality of pores in a resin sheet made of a third resin material. That is, the ventilation sheet 16 is, for example, a resin sheet made of a third resin material, and has a plurality of pores penetrating the front and back surfaces of the ventilation sheet 16.
Before stacking the non-woven fabric sheet 18 and the non-woven fabric sheet 19 on both sides of the ventilation sheet 16 at the time of the above-mentioned heat pressing, the non-woven fabric may be attached to the ventilation sheet 16 in advance to reinforce the ventilation sheet 16. preferable.

[Third Embodiment]
Next, the third embodiment will be described with reference to FIG.
The structure of the main body 50 of the heating tool 100 according to the present embodiment is different from that of the heating tool 100 according to the first embodiment or the second embodiment, and in other respects, the first embodiment described above. Alternatively, it is configured in the same manner as the heating tool 100 according to the second embodiment.

As shown in FIG. 10, in the case of the present embodiment, the main body portion 50 includes a main body sheet 120 formed in a sheet shape, a heating element 130 housed in a storage space 124 inside the main body sheet 120, and a main body sheet. A sheet 10 attached to one side of the 120 is provided. The protruding direction of the protruding portion 12 is opposite to the main body sheet 120 side. Further, the heating element 130 is configured to include an exothermic material.
That is, the heating tool 100 includes a sheet-shaped main body portion (main body sheet 120) having an exothermic material, and the sheet-shaped main body portion is arranged on the other surface side of the sheet 10.

The main body sheet 120 is a first sheet 121 located on the skin side of the user with the main body 50 attached to the user, and the skin side of the user with the main body 50 attached to the user. It is configured to include a second sheet 122 located on the opposite side. The first sheet 121 and the second sheet 122 are superposed on each other.
The first sheet 121 and the second sheet 122 are joined to each other, for example, at an annular joining portion 123 located at a peripheral portion thereof. The first sheet 121 and the second sheet 122 may be bonded by adhesive or adhesive, or may be bonded by heat sealing.
The accommodation space 124 is a gap between the first sheet 121 and the second sheet 122.
Each of the first sheet 121 and the second sheet 122 may be composed of a single layer sheet, or may be a laminated body of a plurality of sheets.
The material of the sheet material (first sheet 121, second sheet 122) constituting the main body sheet 120 is, for example, a non-woven fabric, a woven fabric, other knitting, a resin film such as polyethylene or urethane, a porous body, or any of them. A combination of two or more of the above can be mentioned.
In the case of the present embodiment, the base end portion 66 of the pair of mounting band portions 61 is fixed to the outer surface of the second sheet 122.

The heating element 130 includes, for example, a first coated sheet 131, a second coated sheet 132, and a sheet-shaped heat generating portion 133 held between the first coated sheet 131 and the second coated sheet 132. It is composed of. The first covering sheet 131 and the second covering sheet 132 are superposed on each other. As a result, the first covering sheet 131 and the second covering sheet 132 form an accommodating body for accommodating the heat generating portion 133 inside.
The first covering sheet 131 and the second covering sheet 132 are joined to each other, for example, at their peripheral edges.
The first coated sheet 131 and the second coated sheet 132 may be bonded by adhesive or adhesive, or may be bonded by heat sealing.
Of the first coated sheet 131 and the second coated sheet 132, the first coated sheet 131 is arranged on the side of the first sheet 121, that is, on the side of the user's skin with the main body 50 attached. The second covering sheet 132 is arranged on the side of the second sheet 122, that is, on the side opposite to the skin side of the user with the main body 50 attached.
The present invention is not limited to this example, and the heating element 130 may not have the first coated sheet 131 and the second coated sheet 132. In this case, the accommodating body for accommodating the heat generating portion 133 is composed of, for example, the first sheet 121 and the second sheet 122. Further, in this case, the first sheet 121 has the function of the first coated sheet 131 (breathability of the first coated sheet 131, etc.), and the second sheet 122 has the function of the second coated sheet 132 (of the second coated sheet 132). Breathability, etc.).
The exothermic unit 133 is configured to include the above-mentioned exothermic material 30.
At least a part of the outer surface of the heating element 130 is joined to the inner surface of the main body sheet 120 at the joint portion 134.

The form of the heat generating portion 133 is not particularly limited, and examples thereof include three types: a coating type, a powder type, and a papermaking (papermaking) type.
Of these, the coating type heat generating portion 133 is coated with a heat-generating composition (heat-generating composition containing iron powder, activated carbon, water, etc.) that can be applied to crepe paper or a laminate of paper, and a polymer sheet is applied thereto. It is composed of laminating. Instead of the polymer sheet, a water-absorbent polymer, a water-absorbent layer such as paper or rayon non-woven fabric may be used.
The powder type heat generating unit 133 compacts a powder obtained by mixing iron, activated carbon, water, SAP (Super Absorbent Polymer), inorganic powder, etc. into a sheet, and presses the powder into a sheet, which is used as a first coated sheet 131 and a second coated sheet. It is configured by enclosing it between it and 132.
The paper-making type heat-generating portion 133 is formed by impregnating a heat-generating material containing iron powder, activated carbon, and pulp with a saline solution, and enclosing this between the first coated sheet 131 and the second coated sheet 132. It is configured.

Here, at least one of the first coated sheet 131 and the second coated sheet 132 is made of a breathable material. In the case of the present embodiment, the first coated sheet 131 has higher air permeability than the second coated sheet 132. The second coated sheet 132 may have air permeability or may not have substantially air permeability.
Further, the first coated sheet 131 is a moisture permeable sheet. On the other hand, the second coated sheet 132 is a moisture permeable sheet or a non-moisture permeable sheet. When the second coated sheet 132 is a moisture permeable sheet, the breathability of the second coated sheet 132 may be the same as the breathability of the first coated sheet 131, or more than the breathability of the first coated sheet 131. May be lower, or may be higher than the air permeability of the first covering sheet 131.
Further, the air permeability of the first sheet 121 is preferably higher than that of the first coated sheet 131, and the air permeability of the second sheet 122 is preferably higher than that of the second coated sheet 132. When the second sheet 122 is non-breathable, the second coated sheet 132 may also be non-breathable, and the second coated sheet 132 may not be non-breathable.
It should be noted that when the air permeability of the second coating sheet 132 is lower than the air permeability of the first coating sheet 131, it becomes easier to release vapor to the skin side.

Further, the first sheet 121 is made of a material having breathability and moisture permeability. The second sheet 122 may be breathable or may not be substantially breathable. Further, the second sheet 122 may have moisture permeability or may not have substantially moisture permeability.

In the case of this embodiment, the sheet 10 is attached to the outer surface of the first sheet 121.
Further, the exothermic material 30 is not filled in the cavity 13 of the protrusion 12 of the sheet 10, and the inside of the protrusion 12 is hollow.

Also in the case of this embodiment, the sheet 10 has breathability. More specifically, the sheet 10 also has air permeability in the protrusion 12. Therefore, oxygen can be supplied to the exothermic material 30 of the exothermic part 133 of the heating element 130 via the sheet 10, the first sheet 121, and the first covering sheet 131.
When the heating tool 100 is taken out from the packaging material during use, the heating material 30 of the heating unit 133 of the heating element 130 comes into contact with oxygen in the air, and the heating unit 133 generates heat and generates steam (steam heat). This water vapor is released to the outside via the first coated sheet 131, the first sheet 121 and the sheet 10.

Therefore, even if the structure is such that the cavity 13 of the protrusion 12 is not filled with the heating element 30 as in the present embodiment, the heat of the heating element 130 can be quickly transferred to the skin of the living body by the latent heat of steam. can.
In particular, since the protrusion 12 also has air permeability, heat can be transferred to the skin by the water vapor released from the protrusion 12, so that the protrusion 12 warms the skin while the protrusion 12 warms the skin. Can press against the skin.

[Fourth Embodiment]
Next, the fourth embodiment will be described with reference to FIGS. 11 (a) to 12 (b).
The heating tool 100 according to the present embodiment is different from the heating device 100 according to the third embodiment in the following points, and in other respects, the heating tool 100 according to the third embodiment is described above. It is configured in the same way as.

In the case of the present embodiment, the heating tool 100 is provided with the mounting tool 114 (mounting portion) (FIG. 11 (b)) described below instead of the mounting portion 60 described above.
As shown in FIG. 11B, the mounting tool 114 may be integrally molded from, for example, an elastically deformable resin material, but is not limited to the integrally molded configuration. The mounting tool 114 includes a pair of facing portions 115 arranged so as to face each other, and a connecting portion 116 that connects the facing portions 115 to each other. Each of the pair of facing portions 115 is formed in a plate shape. Further, for example, the connecting portion 116 is also formed in a plate shape. Therefore, the mounting tool 114 has a shape as a whole, which is a U-shaped curve of a long plate in one direction.
The mounting tool 114 can be elastically deformed in a direction in which the facing distance between the pair of facing portions 115 is widened. In a state where the facing distance between the pair of facing portions 115 is widened, the mounting tool 114 tries to elastically return (elastically restore) to the original form, so that the facing distance between the pair of facing portions 115 is narrowed. Has a directional force.

For example, a curved portion 117 is formed at the tip of each of the pair of facing portions 115. The curved portion 117 at the tip of one facing portion 115 is curved in a direction away from the other facing portion 115. Similarly, the curved portion 117 of the other facing portion 115 is curved in a direction away from the one facing portion 115.
However, the fitting 114 does not have to include the curved portion 117.

For example, in the pair of facing portions 115, a plurality of ribs 118 are formed on the surfaces facing each other. These plurality of ribs 118 extend in parallel with each other, for example.
However, the fitting 114 may not be provided with the rib 118.

In the case of the present embodiment, the main body portion 50 is formed to be elongated in one direction as shown in FIG. 11 (a). For example, a plurality of protrusions 12 are arranged side by side in a row.

In the case of the present embodiment, an adhesive layer 112 for attaching the main body 50 to the mounting tool 114 is formed on the surface of the main body 50 opposite to the side on which the protrusion 12 is formed. (See FIG. 12 (b)). In the state before the use of the heating tool 100, a release paper is attached to the adhesive layer 112.

When the heating tool 100 is used, the main body 50 is attached to the mounting tool 114 by peeling the release paper from the adhesive layer 112 and attaching the adhesive layer 112 to the inner surface of the mounting tool 114.
In this state, the protrusion 12 is preferably arranged at a position corresponding to the facing portion 115, but is not preferably arranged at a position corresponding to the connecting portion 116 (see FIG. 12B).
With the main body 50 attached to the mounting tool 114, the facing distance between the pair of facing parts 115 is widened, and in that state, the palm 113 or the like is inserted into the facing distance between the pair of facing parts 115, and the pair of facing parts 115 Release the force to widen the facing distance.
As a result, the fitting 114 elastically returns, so that the protrusion 12 is pressed against the skin of the portion between the thumb and the index finger in the palm 113, for example, as shown in FIGS. 12 (a) and 12 (b). Then, the acupuncture points and the like located in this portion can be pressed by the protrusion 12.

As described above, in the case of the present embodiment, the mounting portion is the mounting tool 114 that presses the protrusion 12 against the skin by sandwiching a part of the living body (palm 113, etc.) through the protrusion 12 by the elastic restoring force. ..

The attachment 114 may be provided separately from the heating tool 100 and used in combination with the heating tool 100. In this case, for example, the main body 50 itself becomes the heating tool 100.
That is, the mounting tool 114 according to the present embodiment is a mounting tool 114 for mounting the heating tool 100 having the protrusion 12 on the living body, and a part of the living body is sandwiched by the elastic restoring force via the protrusion 12. By doing so, the protrusion 12 is brought into close contact with the skin.
According to the wearing tool 114 according to the present embodiment, the heating tool 100 having the protrusion 12 can be attached to the living body, and the protrusion 12 can be pressed against the skin of the living body by the elastic restoring force of the wearing tool 114. can. Therefore, it is possible to continuously press the protrusion 12 against the skin by using the mounting tool 114 having a simple structure.

Further, as described above, this mounting tool includes a pair of facing portions 115 arranged so as to face each other and a connecting portion 116 that connects the facing portions 115 to each other, and the pair of facing portions 115. It can be elastically deformed in the direction in which the facing distance between the two is widened.

Here, since the mounting tool 114 includes a plurality of ribs 118, the main body portion 50 can be more stably attached to the mounting tool 114, and the displacement of the main body portion 50 with respect to the mounting tool 114 can be suppressed. Can be done.
Further, since the mounting tool 114 includes the curved portion 117, a finger is hooked on the curved portion 117 when trying to widen the facing distance between the pair of facing portions 115 in order to remove the mounting tool 114 from the palm 113 or the like. The facing distance between the pair of facing portions 115 can be easily increased.

In this embodiment, an example in which the main body 50 is attached to the attachment 114 by the adhesive layer 112 has been described, but the main body 50 is simply placed between the attachment 114 and the skin by the elastic restoring force of the attachment 114. It may be sandwiched.

[Fifth Embodiment]
Next, a fifth embodiment will be described.
The heating device 100 according to the present embodiment is different from the heating device 100 according to each of the above-described embodiments in the points described below, and is otherwise the same as the heating device 100 according to each of the above-described embodiments. It is configured.

In the first embodiment described above, the nonwoven fabric sheet 15 is composed of a fiber made of a first resin material and a second resin material having a melting point lower than that of the first resin material, and binds the fibers to each other. An example of being configured to include a binding part and a binding point has been described.
Further, in the above-mentioned second embodiment, each of the nonwoven fabric sheet 15 and the nonwoven fabric sheet 17 is composed of a fiber made of a first resin material and a second resin material having a melting point lower than that of the first resin material. An example is described in which a binding portion for binding fibers to each other and a binding portion including the binding portion are included.

On the other hand, in the case of the present embodiment, the nonwoven fabric sheet 15 is made of amorphous PET fibers. Alternatively, at least one or both of the non-woven fabric sheet 15 and the non-woven fabric sheet 17 are composed of amorphous PET fibers.
Here, the fibers constituting the non-woven fabric sheet 15 may contain fibers formed of a material other than amorphous PET. Similarly, the fibers constituting the nonwoven fabric sheet 17 may contain fibers formed of a material other than amorphous PET. Further, the amorphous PET fiber may contain a material other than the amorphous PET.

The amorphous PET has an endothermic peak accompanied by a phase transition in a temperature range of 60 ° C. or higher and 165 ° C. or lower, and the temperature of the endothermic peak is preferably lower than the softening point of the amorphous PET. However, the temperature of this endothermic peak may be equal to the softening point of the amorphous PET.
At this endothermic peak, the endothermic amount (J / g) per unit weight of the sheet 10 is preferably 0.1 or more and 2.0 or less, and more preferably 0.2 or more and 1.7 or less. It is also preferable that it is 0.5 or more and 1.4 or less.
In the case of the present embodiment, the softening point of the nonwoven fabric sheet 15 is the softening point of the amorphous PET.

More specifically, each of the amorphous PETs has at least two endothermic peaks with a phase transition, and the temperature of the first endothermic peak is the glass transition temperature (TG) of 60 ° C. or higher and 180 ° C. or lower. It is within the temperature range. Further, the temperature of the second endothermic peak of the amorphous PET is higher than that of the first endothermic peak.

The method for manufacturing a heating tool according to the present embodiment is described above, except that the nonwoven fabric sheet 15 or at least one or both of the nonwoven fabric sheet 15 and the nonwoven fabric sheet 17 is made of amorphous PET fibers. 1 It is the same as the manufacturing method described in the embodiment.

The same effect as that of each of the above-described embodiments can be obtained by this embodiment as well.

Further, according to the study of the present inventor, the sheet 10 is configured to include the non-woven fabric sheet 15 (or the non-woven fabric sheet 17) made of amorphous PET fibers, so that the protrusion 12 has a more desired shape. It is possible to process precisely.

[Sixth Embodiment]
Next, the sixth embodiment will be described with reference to FIGS. 20 (a) to 21 (c).
The heating tool 100 according to the present embodiment is different from the heating device 100 according to the fourth embodiment in the following points, and in other respects, the heating tool 100 according to the fourth embodiment is described above. It is configured in the same way as.

In the case of the present embodiment, the number of protrusions 12 included in the main body 50 is two (FIG. 20 (a)) or one (FIG. 20), as shown in, for example, FIG. 20 (a) or FIG. 20 (b). (B)). The main body portion 50 has a sheet-shaped portion and a protruding portion 12 projecting from the sheet-shaped portion to one side.
The planar shape of this sheet-like portion is not particularly limited, but is formed, for example, into a rectangular shape (preferably a rectangular shape with rounded corners).

In the case of the present embodiment, of the pair of facing portions 115 of the mounting tool 114, one facing portion 115 (hereinafter, facing portion 115a) is formed with a holding groove 181 into which the main body portion 50 can be inserted and removed.
The holding groove 181 includes, for example, a pair of side groove portions 181a arranged at both ends in the width direction of the facing portions 115a, and a connecting groove portion 181b connecting the pair of side groove portions 181a to each other. Has been done. The width direction of the facing portion 115a is the left-right direction in FIG. 21 (c), and the back side direction and the front side direction of the paper surface in FIG. 21 (b). Each of the pair of side groove portions 181a extends linearly from, for example, the connecting portion 116 side toward the tip end side of the facing portion 115. The connecting groove portion 181b is arranged between the ends of the pair of side groove portions 181a on the connecting portion 116 side, and these ends are connected to each other. The connecting groove portion 181b extends in the width direction of the facing portion 115a.
Each of the pair of side groove portions 181a is open toward each other. The connecting groove portion 181b is open toward the tip end side of the facing portion 115a.

The facing portion 115a includes a flat plate-shaped portion 182 and a holding claw portion 183 arranged on the other facing portion 115 (hereinafter, facing portion 115b) side with the plate-shaped portion 182 as a reference. Has been done.
The space (gap) between the holding claw portion 183 and the plate-shaped portion 182 constitutes the holding groove 181.

The holding claw portion 183 includes a pair of side claw portions 183a arranged at both ends in the width direction of the facing portions 115a, and a connecting claw portion 183b connecting the pair of side claw portions 183a to each other. It is composed of. Each of the pair of side claw portions 183a extends linearly from the portion of the facing portion 115a on the connecting portion 116 side toward the tip end side of the facing portion 115, for example. The connecting claw portion 183b is arranged between the ends of the pair of side claw portions 183a on the connecting portion 116 side, and these ends are connected to each other.
The shape of the side claw portion 183a is L-shaped in the cross section orthogonal to the tip base end direction of the facing portion 115a (see FIG. 21 (c)).
In the cross section orthogonal to the width direction of the facing portion 115a, the shape of the connecting claw portion 183b is L-shaped (not shown).
The holding claw portion 183 has a U-shaped notch-shaped portion at a position facing the other facing portion 115b.

The dimension of the holding groove 181 in the thickness direction of the plate-shaped portion 182 is set to be equal to the thickness dimension of the sheet-shaped portion in the main body portion 50 or slightly larger than the thickness dimension of the sheet-shaped portion. ing.
In the case of this embodiment, the main body 50 does not have the adhesive layer 112.

In the case of the present embodiment, the main body portion 50 can be attached to the facing portion 115a as described below.
First, the sheet-shaped portion of the main body portion 50 is moved relative to the facing portion 115a from the tip end side of the facing portion 115a in the direction of arrow A in FIG. 21B. As a result, the pair of edge portions 53 (see FIGS. 20 (a) and 20 (b)) facing each other in the sheet-like portion are inserted into the pair of side groove portions 181a, and one ends of the edge portions 53 are connected to each other. The other edge portion connecting the above is inserted into the connecting groove portion 181b. At this time, the pair of edge portions 53 slide with respect to the pair of side groove portions 181a.
In this way, as shown in FIGS. 21 (a) to 21 (c), the main body portion 50 can be in a state of being mounted on the facing portion 115a. In this state, the protrusion 12 of the main body 50 projects toward the other facing portion 115b via the U-shaped notch-shaped portion of the holding claw portion 183.

Further, the main body 50 can be pulled out from the facing portion 115a by moving the main body 50 mounted on the facing portion 115a in the direction of arrow B in FIG. 21B relative to the facing portion 115a. can. Also at this time, the pair of edge portions 53 slide with respect to the pair of side groove portions 181a.

For example, in the other facing portion 115b, a protrusion 185 projecting toward the facing portion 115a side is formed on the surface facing the facing portion 115a.
Further, in one facing portion 115a, for example, a protrusion 186 is provided on the surface 1151 on the side opposite to the other facing portion 115b side.
However, the present invention is not limited to this example, and the protrusion 185 may not be formed on the facing portion 115b. Further, the facing portion 115a may not be provided with the protrusion 186.

Here, an example in which one of the facing portions 115a of the pair of facing portions 115 has a structure for holding the main body portion 50 (holding groove 181 and holding claw portion 183) has been described, but the pair of facing portions 115 Both may have a holding groove 181 and a holding claw portion 183.
In the case of the present embodiment as well, as in the fourth embodiment, the fitting 114 may be provided separately from the heating tool 100 and used in combination with the heating tool 100. In this case, for example, for example. The main body 50 itself becomes the heating tool 100.

As described above, at least one of the pair of facing portions 115 has a holding portion (for example, composed of a holding groove 181 and a holding claw portion 183) for holding the heating tool 100.
Further, the holding portion holds the pair of edge portions 53 of the sheet-shaped heating tool 100 facing each other in a detachable manner.
Further, the holding portion has a pair of groove portions (a pair of side groove portions 181a) that can be inserted and removed by sliding the pair of edge portions 53 of the heating tool 100, respectively.

The present invention is not limited to the above embodiments and modifications, and includes various modifications, improvements, and the like as long as the object of the present invention is achieved.

For example, the exothermic material 30 may be composed of an oxidizable metal, a water retaining agent, water, and a water-absorbing polymer.
Since the exothermic material 30 is composed of the superabsorbent polymer, the excess water in the exothermic material 30 can be absorbed by the superabsorbent polymer. Therefore, when the heating tool 100 is taken out from the packaging material, the exothermic material 30 can quickly generate heat.
When the exothermic material 30 is configured to contain a water-absorbing polymer, the heating tool 100 does not have to include the above-mentioned water-absorbing sheet 40 (FIG. 3).
The content of the superabsorbent polymer in the exothermic material 30 is preferably 1% by mass or more and 12% by mass or less, and more preferably 2% by mass or more and 8% by mass or less. By setting the content of the water-absorbent polymer in the exothermic material 30 to 1% by mass or more, the water-absorbent polymer can sufficiently absorb water. Further, by setting the content of the superabsorbent polymer in the exothermic material 30 to 12% by mass or less, it is possible to sufficiently secure the content of the oxidizable metal in the exothermic material 30 that contributes to heat generation.

Further, in the above embodiment, an example in which the mounting portion 60 is configured to include a pair of adhesive mounting band portions 61 has been described, but the present invention is not limited to this example, and the present invention is not limited to this example, for example, a bag or the like. The main body 50 may be wrapped around a leg, an arm, or the like using a band-shaped body, and the protrusion 12 may be pressed against the skin.
Further, the wearing portion 60 may be in the form of an eye mask provided with a pair of ear hook portions that can be hung on the user's ears. That is, the mounting portion 60 may include a pair of ear hook portions instead of the pair of mounting band portions 61.

The above embodiment includes the following technical ideas.
<1> A sheet having a convex protrusion on one side,
The exothermic material arranged on the other side of the sheet and
Equipped with
The sheet is configured to include a non-woven fabric sheet.
The nonwoven fabric sheet each has at least two endothermic peaks with a phase transition, of which the first endothermic peak exists in the temperature range of 60 ° C. or higher and 180 ° C. or lower, and the second endothermic peak is the first endothermic peak. A heating device that exists on the higher temperature side.
<2> The nonwoven fabric sheet is composed of a fiber made of a first resin material and a second resin material having a melting point lower than that of the first resin material, and binds the fibers to each other. The heating tool according to <1>, which is composed of a part and a portion.
<3> The heating tool according to <2>, wherein the content of the first resin material in the nonwoven fabric sheet is higher than the content of the second resin material in the nonwoven fabric sheet.
<4> The sheet includes a first nonwoven fabric sheet constituting one outermost layer of the sheet, a second nonwoven fabric sheet constituting the other outermost layer of the sheet, and the first nonwoven fabric sheet. It is configured to include a ventilation sheet constituting an intermediate layer located between the second nonwoven fabric sheet and the non-woven fabric sheet.
The heating tool according to <2> or <3>, wherein the ventilation sheet contains a third resin material having a melting point higher than that of the second resin material.
<5> The heating tool according to <1>, wherein the non-woven fabric sheet is made of amorphous PET fibers.
<6> The heating tool includes a sheet-shaped main body portion having the exothermic material.
The heating tool according to any one of <1> to <5>, wherein the sheet-shaped main body is arranged on the other surface side of the sheet.
<7> The heating tool according to any one of <1> to <6>, wherein the inside of the protrusion is hollow.
<8> The heating tool according to any one of <1> to <7>, wherein the sheet has breathability.
<9> The heating tool according to <8>, wherein the protrusion has breathability.
<10> The heating tool includes a sheet-shaped main body portion having the exothermic material.
The sheet-shaped main body is arranged on the other surface side of the sheet.
The inside of the protrusion is hollow,
The sheet is breathable and
The heating tool according to <1>, wherein the protrusion has breathability.
<11> The heating tool includes a second sheet laminated on the other side of the sheet with respect to the sheet.
The heating tool according to any one of <8> to <10>, which has higher breathability of the sheet than the breathability of the second sheet.
<12> The exothermic material is composed of an oxidizable metal, a water retaining agent, and water.
The heating tool according to any one of <1> to <11>, comprising a water absorbing sheet laminated on the other side of the sheet.
<13> The heating tool according to any one of <1> to <12>, wherein the exothermic material is composed of an oxidizing metal, a water retaining agent, water, and a water-absorbing polymer.
<14> The heating device according to any one of <1> to <13>, comprising a mounting portion for mounting the heating device on a living body in a state where the protrusion is pressed against the skin.
<15> The heating tool according to <14>, wherein the mounting portion includes an adhesive sheet portion that is adhesively fixed to the skin.
<16> The heating tool according to <14> or <15>, wherein the mounting portion includes a stretchable elastic sheet portion.
<17> The heating tool according to <14>, wherein the mounting portion is a mounting tool that presses the protrusions against the skin by sandwiching a part of the living body through the protrusions by an elastic restoring force.
<18> The heating tool according to any one of <1> to <17>, wherein the exothermic material contains iron and a carbon component.
<19> The heating tool according to <18>, wherein the iron is an oxidizable iron.
<20> In the step of preparing a nonwoven fabric sheet, the nonwoven fabric sheet each has at least two endothermic peaks with a phase transition, and the first endothermic peak is within the temperature range of 60 ° C. or higher and 180 ° C. or lower. The step of preparing the non-woven fabric sheet that exists and the second endothermic peak exists on the higher temperature side than the first endothermic peak, and
The process of preparing a sheet containing the non-woven fabric sheet and
A step of hot-pressing the sheet at a temperature intermediate between the first endothermic peak and the second endothermic peak to form a convex protrusion on one surface side of the sheet.
The step of arranging the exothermic material on the other surface side of the sheet and
A method of manufacturing a heating device.
<21> The nonwoven fabric sheet is composed of a fiber made of a first resin material and a second resin material having a melting point lower than that of the first resin material.
In the step of forming the protrusion, the sheet is hot-pressed at a temperature intermediate between the melting point of the first resin material and the melting point of the second resin material to form a convex protrusion on one surface side of the sheet. The method for manufacturing a heating tool according to <20>.
<22> The sheet includes a first nonwoven fabric sheet constituting one outermost layer of the sheet, a second nonwoven fabric sheet constituting the other outermost layer of the sheet, the first nonwoven fabric sheet, and the first nonwoven fabric sheet. It is configured to include a ventilation sheet constituting an intermediate layer located between the non-woven fabric sheets of 2 and the non-woven fabric sheet.
The ventilation sheet is configured to contain a third resin material having a melting point higher than that of the second resin material.
Described in <21>, in the step of forming a convex protrusion on one surface side of the sheet, the sheet is hot-pressed at a temperature intermediate between the melting point of the second resin material and the melting point of the third resin material. How to make a heating device.
<23> The method for manufacturing a heating tool according to <20>, wherein the nonwoven fabric sheet is made of amorphous PET fibers.
<24> A sheet having a convex protrusion on one surface side,
The exothermic material arranged on the other side of the sheet and
Equipped with
The sheet is configured to include a non-woven fabric sheet.
The nonwoven fabric sheet includes a fiber made of a first resin material, a binding portion made of a second resin material having a melting point lower than that of the first resin material, and a binding portion for binding the fibers to each other. A warming tool that is composed of.
<25> A step of preparing a nonwoven fabric sheet containing a fiber composed of a first resin material and a second resin material having a melting point lower than that of the first resin material.
The process of preparing a sheet containing the non-woven fabric sheet and
A step of hot-pressing the sheet at a temperature intermediate between the melting point of the first resin material and the melting point of the second resin material to form a convex protrusion on one surface side of the sheet.
The step of arranging the exothermic material on the other surface side of the sheet and
A method of manufacturing a heating device.

Further, the above embodiment includes the following technical ideas.
[1] A wearing tool for attaching a heating tool having a protrusion to a living body.
A wearing tool that presses the protrusion against the skin by sandwiching a part of the living body through the protrusion by an elastic restoring force.
[2] The mounting tool includes a pair of facing portions arranged facing each other and a connecting portion connecting the facing portions to each other, and the direction in which the facing distance between the pair of facing portions is widened. The attachment according to [1], which is elastically deformable.
[3] The wearing tool according to [2], wherein at least one of the pair of facing portions has a holding portion for holding the heating device.
[4] The attachment according to [3], wherein the holding portion holds a pair of side portions of the sheet-shaped heating tool facing each other in a detachable manner.
[5] The mounting tool according to [4], wherein the holding portion has a pair of groove portions that can be inserted and removed by sliding the pair of edge portions of the heating tool.

Hereinafter, examples will be described.

First, Examples 1 and 2 will be described with reference to FIGS. 13A to 14.
In Examples 1 and 2, the main body portion 50 (see FIGS. 1 to 3) having the structure described in the first embodiment is used as the sample 155 (FIG. 13 (a)), and the temperature rising characteristic of the protrusion 12 is increased. I checked.
More specifically, in Example 1, the sheet 10 having the protrusion 12 has a breathable structure, while in Example 2, the sheet 10 having the protrusion 12 has a non-breathable structure. did.
The sheet 10 of Example 1 had an air permeability of 1 second / 100 ml or more and 3 seconds / 100 ml or less. In the sheet 10 of Example 2, the air permeability was ∞, which is the upper limit of measurement.

Here, as shown in FIG. 13A, among the five protrusions 12 of the main body 50, the three protrusions 12 arranged diagonally have the first protrusion 141, the second protrusion 142, and the first protrusion 12. 3 The name of the protrusion 143 is given.
FIG. 13B is a graph showing the profiles of the temperature rise characteristics of the top P1 of the first protrusion 141, the top P2 of the second protrusion 142, and the top P3 of the third protrusion 143 for the first embodiment. be.
FIG. 13 (c) is a graph showing the profiles of the temperature rise characteristics of the top P1 of the first protrusion 141, the top P2 of the second protrusion 142, and the top P3 of the third protrusion 143 for the second embodiment. be.
In each of FIGS. 13 (b) and 13 (c), the horizontal axis is time (minutes) and the vertical axis is temperature (° C.).

FIG. 14 is a schematic diagram showing the configuration of the measuring device used for the measurement of the first embodiment and the second embodiment. This measuring device complies with JIS S4100.
This measuring device includes a constant temperature water tank 151, a plate material 152 arranged on the top surface of the constant temperature water tank 151, an underlay material 153 arranged on the plate material 152 on which the sample 155 is placed, and an underlay material 153. It is provided with a temperature sensor 154 arranged on the sample 155, a covering material 156 placed on the sample 155, and a weight 157 placed as a weight on the covering material 156.
The constant temperature water tank 151 is made of SUS304, and the constant temperature water tank 151 is surrounded by a heat insulating material 161.
The constant temperature water tank 151 has an introduction port 151a into which the circulating water is introduced and an outlet 151b from which the circulating water is drawn out.
The plate material 152 is a polypropylene plate having a thickness of 7 mm.
The underlay material 153 is a stack of two types I gauze specified by the Japanese Pharmacopoeia.
The covering material 156 is made by stacking eight flannels of 100% cotton tex count 5.905 twin yarns.

Further, this measuring device includes a circulation type constant temperature water tank 158 that circulates the circulating water while maintaining a constant temperature, and a supply pipe 159 for supplying the circulating water from the circulation type constant temperature water tank 158 to the introduction port 151a of the constant temperature water tank 151. And a return pipe 160 for returning the circulating water from the outlet 151b of the constant temperature water tank 151 to the circulation type constant temperature water tank 158.
Further, this measuring device includes a logger (not shown) that stores the detection result by the temperature sensor 154, and a personal computer (not shown) that acquires the detection result from the logger, collects it, and analyzes it. ..

The measurement conditions were an ambient temperature of 20 ° C. ± 1 ° C., an ambient humidity of 55% to 70%, and a wind speed of no wind (0.5 m / sec or less).
The sample 155 is taken out from the packaging material, the sample 155 is placed on the underlaying material 153 with the protrusion 12 facing downward, the covering material 156 is placed on the sample 155, and the weight is further placed on the covering material 156. 157 was placed.
The timing at which the sample 155 was taken out from the packaging material was defined as the measurement start time (horizontal axis is 0 minutes) in FIGS. 13 (b) and 13 (c). Further, from taking out the sample 155 from the packaging material to arranging the weight 157 on the covering material 156, the process was promptly performed (within 30 seconds).

From the comparison between FIGS. 13 (a) and 13 (b), it was found that in Example 1, the maximum temperature reached by the protrusion 12 was higher than that in Example 2. Further, in Example 1, it was found that the time required for the protrusion 12 to reach the maximum temperature was shorter than that in Example 2.
On the other hand, in Example 2, it was found that the time (duration) in which the temperature of the protrusion 12 was maintained near the maximum reached temperature was longer than that in Example 1.

Next, Examples 3 and 4 will be described with reference to FIGS. 15 to 17.
In Examples 3 and 4, a sample is taken from the sheet 10 having the structure of the above-mentioned fifth embodiment, that is, the sheet 10 including the non-woven fabric sheet composed of amorphous PET fibers, and the endothermic peak of the sample is measured. did.
Two types of the sheet 10 were prepared: one having a molding temperature (molding temperature of the protrusion 12) of 100 ° C. (Example 3) and one having a molding temperature of 120 ° C. (Example 4).
In addition, samples were taken from each of the three locations of Sheet 10 of Example 3 and Example 4. That is, as shown in FIG. 15, for each of the third and fourth embodiments, the top portion 171 of the protrusion 12 (corresponding to the “protrusion top” of the sample name shown in FIG. 16) and the side surface portion 172 of the protrusion 12. (Corresponding to the "projection side surface portion" of the sample name shown in FIG. 16) and the flat surface portion 173 (corresponding to the "flat surface portion" of the sample name shown in FIG. 16) where the protrusion 12 is not formed in the sheet 10. Correspondence) It was collected from three places.

FIG. 16 shows the name of each sample (sample name), molding temperature (° C.), sample weight (mg), and endothermic amount per unit weight (J / g) at the first endothermic peak.
Further, FIG. 17 shows a DSC chart of each sample.
In addition, "before molding" shown in FIGS. 16 and 17 means the sheet 10 before molding. The sheet 10 before molding was flat, and a part of the sheet 10 was taken as a sample.

The measurement result of the heat absorption amount shown in FIG. 16 and the DSC chart shown in FIG. 17 are the results measured as follows.
As a measuring device, a Thermo Plus EVO2 DSC8231 differential scanning calorimeter manufactured by Rigaku Co., Ltd .; DSC was used.
The measurement environment was a nitrogen atmosphere.

As shown in FIG. 17, for each of Example 3 (molded at 100 ° C.) and Example 4 (molded at 120 ° C.), in any of the "protrusion portion top portion", "projection portion side surface portion", and "flat surface portion". However, the first endothermic peak appeared at around 70 ° C. The temperature of this first endothermic peak is the glass transition temperature (TG) of amorphous PET.
Further, in each of Examples 3 and 4, a second endothermic peak appeared in the vicinity of 250 ° C. in any of the "projection top", "projection side surface" and "flat surface". The temperature of this second endothermic peak is the melting point of the amorphous PET, which is a temperature exceeding the softening point of the amorphous PET.
As shown in FIG. 16, for each of Examples 3 and 4, in the "top of the protrusion", the amount of heat absorbed per unit weight at the first endothermic peak appears in the "side surface of the protrusion" and The "flat part" is small.

On the other hand, in "before molding", the first endothermic peak appeared at around 80 ° C. The temperature of this first endothermic peak is the glass transition temperature (TG) of amorphous PET. Also, "before molding", the second endothermic peak appeared near 250 ° C. The temperature of this second endothermic peak is the melting point of the amorphous PET, which is a temperature exceeding the softening point of the amorphous PET.
In Examples 3 and 4, the glass transition temperature is shifted to the lower temperature side as compared with "before molding". The reason for this is not clear, but in Examples 3 and 4, since the sheet 10 received a thermal history of being cooled from the molding temperature to room temperature, the amorphous structure was changed due to the relaxation of enthalpy. It is thought that this is the cause.

Next, Examples 5 to 8 will be described with reference to FIGS. 18 (a) to 19 (d).
18 (a) and 18 (b) show the results of imaging the protrusion 12 produced in Example 5, of which FIG. 18 (b) is an enlarged photograph of FIG. 18 (a). ..
18 (c) and 18 (d) show the results of imaging the protrusion 12 produced in Example 6, of which FIG. 18 (d) is an enlarged photograph of FIG. 18 (c). ..
19 (a) and 19 (b) show the results of imaging the protrusion 12 produced in Example 7, of which FIG. 19 (b) is an enlarged photograph of FIG. 19 (a). ..
19 (c) and 19 (d) show the results of imaging the protrusion 12 produced in Example 8, of which FIG. 19 (d) is an enlarged photograph of FIG. 19 (c). ..

In Examples 5 and 6, a common mold was used for molding the sheet 10, and the molding temperatures were the same.
In Examples 7 and 8, a common mold was used for molding the sheet 10, and the molding temperatures were the same.
The molds used in Examples 5 and 6 and the molds used in Examples 7 and 8 have different shapes from each other.

In Examples 5 and 7, the material of the sheet 10 is the material described in the first embodiment. That is, the sheet 10 used in Examples 5 and 7 is composed of a fiber made of a first resin material and a second resin material having a melting point lower than that of the first resin material, and connects the fibers to each other. It is configured to include a bonded portion to be worn and a non-woven fabric sheet configured to include the bonded portion. More specifically, the first resin material is PET and the second resin material is low melting point PET.

In Examples 6 and 8, the material of the sheet 10 is the material described in the fifth embodiment. That is, the sheet 10 used in Examples 6 and 8 includes a non-woven fabric sheet made of amorphous PET fibers.

From the comparison between Example 5 (FIGS. 18 (a) and 18 (b)) and Example 6 (FIGS. 18 (c) and 18 (d)), the sheet 10 is composed of amorphous PET fibers. It can be seen that when the non-woven fabric sheet is included, the protrusion 12 can be precisely processed into a desired shape.
Similarly, from the comparison between Example 7 (FIGS. 19 (a) and 19 (b)) and Example 8 (FIGS. 19 (c) and 19 (d)), the sheet 10 is made of amorphous PET fiber. It can be seen that when the non-woven fabric sheet is included, the protrusion 12 can be precisely processed into a desired shape.

10 Sheet 10a One side 10b The other side 11 Base 12 Protrusion 12a First protrusion 12b Second protrusion 13 Cavity 15 Non-woven fabric sheet 16 Ventilation sheet 17 Non-woven fabric sheet 18, 19 Non-woven fabric sheet 20 Second sheet 30 Heat-generating material 40 Water absorption Sheet 50 Main body 51 Joint 53 Edge 60 Mounting 61 Mounting band 63 Mounting component Sheet 64 Adhesive layer 65 Peeling paper 66 Base end 70 First mold 71 Flat surface 72 Protrusion 80 Second mold 81 Flat Surface 82 Recess 91 Skin 100 Heating tool 112 Adhesive layer 113 Palm 114 Mounting tool (mounting part)
115, 115a, 115b Opposing part 116 Connecting part 117 Curved part 118 Rib 120 Main body sheet 121 First sheet 122 Second sheet 123 Joining part 124 Accommodation space 130 Heat generating element 131 First covering sheet 132 Second covering sheet 133 Heat generating part 134 Joining Part 141 1st protrusion 142 2nd protrusion 143 3rd protrusion 151 Constant temperature water tank 151a Introductory port 151b Outlet port 152 Plate material 153 Underlay material 154 Temperature sensor 155 Sample 156 Covering material 157 Weight 158 Circulating constant temperature water tank 159 Supply pipe 160 Return Piping 161 Insulation material 171 Top 172 Side surface 173 Flat surface 181 Holding groove 181a Side groove 181b Connecting groove 182 Plate-shaped 183 Holding claw 183a Side claw 183b Connecting claw 185 Protrusions 186 Protrusions P1, P2, P3 Top

Claims (22)

A sheet having a base portion and a protrusion portion convex on one surface side with respect to the base portion.
An exothermic material that is arranged on the other surface side of the sheet and generates water vapor with heat generation,
Equipped with
The sheet is configured to include a non-woven fabric sheet.
The nonwoven fabric sheet each has at least two endothermic peaks with a phase transition, of which the first endothermic peak exists in the temperature range of 60 ° C. or higher and 180 ° C. or lower, and the second endothermic peak is the first endothermic peak. It exists on the higher temperature side than
The exothermic material contains a water-absorbent polymer, or a water-absorbent sheet containing water and a water-absorbent polymer is laminated on the exothermic material.
The sheet including the protrusion has air permeability, and the air permeability of the sheet is 3 seconds / 100 ml or more and 20000 seconds / 100 ml or less.
A steam generating heater that discharges the steam generated by the exothermic material to the outside through the protrusions. The nonwoven fabric sheet includes a fiber made of a first resin material, a binding portion made of a second resin material having a melting point lower than that of the first resin material, and a binding portion for binding the fibers to each other. The water vapor generation heating device according to claim 1, which comprises the above. The water vapor generation heating device according to claim 2, wherein the content of the first resin material in the non-woven fabric sheet is higher than the content of the second resin material in the non-woven fabric sheet. The sheet includes the first nonwoven fabric sheet constituting one outermost layer of the sheet, the second nonwoven fabric sheet constituting the other outermost layer of the sheet, the first nonwoven fabric sheet and the second. It is composed of a ventilation sheet constituting an intermediate layer located between the non-woven fabric sheet and the non-woven fabric sheet.
The steam-generating heating device according to claim 2 or 3, wherein the ventilation sheet includes a third resin material having a melting point higher than that of the second resin material. The steam-generating heating tool according to claim 1, wherein the non-woven fabric sheet is made of amorphous PET fibers. The steam generating heater according to any one of claims 1 to 5, wherein the inside of the protrusion is hollow. The steam generating heater includes a second sheet laminated on the other side of the sheet with respect to the sheet.
The exothermic material is arranged between the second sheet and the sheet, and the exothermic material is arranged.
The steam-generating heating device according to any one of claims 1 to 6, wherein the breathability of the sheet is higher than that of the second sheet. The steam generating heater is provided with a sheet-shaped main body having the exothermic material, and is provided with a sheet-shaped main body.
The steam generating heater according to any one of claims 1 to 5, wherein the sheet-shaped main body is arranged on the other surface side of the sheet. The steam generating heater according to claim 8, wherein the inside of the protrusion is hollow. The steam generating heater includes a second sheet laminated on the other surface side with respect to the sheet-shaped main body portion.
The sheet-shaped main body is arranged between the second sheet and the sheet.
The steam-generating heating device according to claim 8 or 9, wherein the breathability of the sheet is higher than that of the second sheet. The steam generating heater according to claim 7 or 10, wherein the second sheet is a non-ventilated sheet that is substantially impermeable to air. The steam generating heating tool according to any one of claims 1 to 11, wherein the exothermic material is composed of an oxidizable metal, a water retaining agent, and water. The steam-generating heating device according to any one of claims 1 to 12, further comprising a mounting portion for mounting the steam-generating heating device on a living body in a state where the protrusion is pressed against the skin. The steam-generating heating device according to claim 13, wherein the mounting portion includes a pressure-sensitive adhesive sheet portion that is adhesively fixed to the skin. The steam-generating heating device according to claim 13 or 14, wherein the mounting portion includes a stretchable elastic sheet portion. The steam-generating heating device according to claim 15, wherein the mounting portion is a mounting tool that presses the protrusions against the skin by sandwiching a part of a living body through the protrusions by an elastic restoring force. The steam generating heating tool according to any one of claims 1 to 16, wherein the exothermic material contains iron and a carbon component. The steam-generating heating device according to claim 17, wherein the iron is iron to be oxidized. The method for manufacturing a steam generating heater according to any one of claims 1 to 18.
In the step of preparing a nonwoven fabric sheet, each of the nonwoven fabric sheets has at least two endothermic peaks with a phase transition, of which the first endothermic peak exists in the temperature range of 60 ° C. or higher and 180 ° C. or lower. The second endothermic peak is a step of preparing a non-woven fabric sheet existing on the higher temperature side than the first endothermic peak, and
The step of preparing the sheet including the non-woven fabric sheet and
A step of hot-pressing the sheet at a temperature intermediate between the first endothermic peak and the second endothermic peak to form the convex protrusion on one surface side of the sheet.
A step of arranging the exothermic material that generates steam due to heat generation on the other surface side of the sheet, and
A method for manufacturing a steam generating heater. The nonwoven fabric sheet is composed of a fiber made of a first resin material and a second resin material having a melting point lower than that of the first resin material.
In the step of forming the protrusion, the sheet is hot-pressed at a temperature intermediate between the melting point of the first resin material and the melting point of the second resin material to form a convex protrusion on one surface side of the sheet. The method for manufacturing a steam-generating heating device according to claim 19. The sheet includes a first nonwoven fabric sheet constituting one outermost layer of the sheet, a second nonwoven fabric sheet constituting the other outermost layer of the sheet, the first nonwoven fabric sheet, and the second nonwoven fabric. It is configured to include a ventilation sheet that constitutes an intermediate layer located between the sheet and the sheet.
The ventilation sheet is configured to contain a third resin material having a melting point higher than that of the second resin material.
The 20th aspect of claim 20, wherein in the step of forming a convex protrusion on one surface side of the sheet, the sheet is hot-pressed at a temperature intermediate between the melting point of the second resin material and the melting point of the third resin material. How to manufacture a steam-generating heating tool. The method for manufacturing a steam-generating heating device according to claim 19, wherein the non-woven fabric sheet is made of amorphous PET fibers.

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