JP5490479B2 - Kitchen paper - Google Patents

Description

  The present invention relates to kitchen paper.

  Kitchen paper can be used for a wide variety of purposes, such as food packaging, boiled drop lids, drip absorbents such as fresh fish, water draining, oiling, and wiping around the kitchen. There is a use to absorb excess oil and moisture such as fried foods. When absorbing excess oil such as deep-fried food, it absorbs oil and water quickly so as not to damage the clothes of the deep-fried food and to prevent stickiness of the deep-fried food by steam or oil from the deep-fried food. A function is required to prevent the oil etc. from returning to the fried food.

  The conventional kitchen paper is well known to have an appropriate number of embossed sanitary thin papers laminated, but this conventional kitchen paper has a small contact area between the paper surface and the fried food due to the unevenness of the embossing, and the sheet. Capability of absorbing excess oil such as deep-fried foods is secured by incorporating moisture and oil into the gap between the embossments of each sheet as the main liquid absorption mechanism due to the capillary phenomenon due to the gap between fibers. ing.

However, the conventional kitchen paper that has been embossed as described above may be crushed by the loosening of the fibers due to its load, oil content, and moisture absorption when the fried food is placed on it. In some cases, it could not be demonstrated.
This problem can be improved to some extent by increasing the embossing pressure during embossing and applying embossing firmly to the paper. However, excessive embossing pressure can cause the paper to break. May cause another problem of reducing the softness and flexibility required for kitchen paper, such as manufacturing or wiping.
Then, the present inventors paid attention to the foamed ink disclosed in Patent Documents 1 and 2 below in order to improve the absorption performance of the excess oil content of the fried food without reducing the main functions such as the wipeability of kitchen paper. These foamed inks are mainly used to enhance decorativeness and design, but have found that the foaming mechanism can be usefully used for kitchen paper, and have completed the present invention.

JP2002-254588 JP-A-9-41296

  The main subject of this invention is providing the kitchen paper especially suitable in the use which absorbs the excess oil content of fried food, while having the function as a normal kitchen paper.

The present invention and effects obtained by solving the above problems are as follows.
<Invention of Claim 1>
Two crepe papers without embossing are laminated and integrated via an adhesive arranged in a line, and have a plurality of sections surrounded by the adhesive arranged in a line, and A kitchen paper characterized in that a foamable curable substance that expands by heating to an adhesive and expands and hardens after expansion is contained in an unfoamed state.

(Function and effect)
Since the present invention contains a foam-curing substance that expands by applying heat in an adhesive that bonds two sheets of crepe paper and expands and cures after expansion, lay it on a tray, bat, dish, etc. When a fried food or the like is placed thereon, the foamable curable substance is foamed by the heat of the fried food. The foamable curable substance maintains its foamed state after foaming and changes to a cured state having elasticity, rigidity, or rigid elasticity. Therefore, the kitchen paper of the present invention is creped by foaming of the foamable curable substance. A gap between the papers is widened, and a gap is formed between the two crepe papers to absorb and retain oil from fried foods, and is maintained.

  In particular, in the present invention, the adhesive is arranged in a line, and a plurality of sections surrounded by the adhesive arranged in the line are provided. Therefore, when the foamable curable material contained in the linearly arranged adhesive part is foamed, the adhesive-applied part acts as a large number of wall pillars to support the fried food.

  Also, the adhesive containing the foamable curable substance penetrates into the paper layer of the crepe paper (inside of the crepe paper, not between the two crepe papers) when applying to the crepe paper, printing, etc. The adhesive-applied portion has an extremely high shape retaining property as compared with an embossed convex portion formed only of paper after foaming, and the gap is held without being crushed even by a load of fried food or the like.

  Further, in the present invention, since a plurality of sections surrounded by the linearly arranged adhesive are provided, a gap formed between two crepe papers is partitioned, and a sufficient gap is secured. In addition, the oil or the like absorbed in one section does not move to another gap. Therefore, one compartment that has absorbed oil or the like does not have a liquid absorbing effect on other compartments. This makes it possible to use a wide range of paper, thereby increasing convenience when a plurality of fried foods are placed.

  Furthermore, in the present invention, a crepe paper having a crepe is used, and the adhesive is arranged in a line, and there are a plurality of sections surrounded by the adhesive arranged in the line, and the adjacent linear There is an adhesive non-applied part between the adhesive applied parts. As a result, even if a part of the foamable curable material that touches the deep-fried food is foamed, the crepe of the part to which no adhesive is applied is stretched. There is no tear.

  On the other hand, kitchen paper is generally sold as rolls and bundles, so there is a problem in transportation if it is excessively bulky, but in the present invention, the foamed curable substance is not foamed in the adhesive. Therefore, it is not inferior to conventional kitchen paper in handling when not in use such as during transportation.

  In the present invention, the crepe paper is not embossed. Accordingly, there is no decrease in the thickness of the crepe paper due to pressing during embossing, no increase in the density of the fibers, etc., so that a sufficient inter-fiber gap is secured and the liquid absorption speed is excellent. Moreover, it is excellent also in terms of bulkiness, flexibility and softness.

  In addition, since the adhesive is scattered and the foamable curable substance is contained in the adhesive in an unfoamed state, the kitchen paper is used for other purposes such as wiping off water, dirt, dust, etc. Does not inhibit its use.

<Invention of Claim 2>
2. The kitchen paper according to claim 1, wherein the foamable curable substance foams at 90 to 200 ° C., and the foaming increases the paper thickness by 100 μm or more as compared to before foaming.

(Function and effect)
The temperature of general oil when frying fried food is around 180 ° C., and the present inventors show that when fried food is taken out from oil at this temperature, the temperature of the fried food is reduced to about 100 to 120 ° C. I know. Accordingly, when the foamable curable substance is foamed at 90 to 200 ° C. as in the present invention, it is particularly suitable for use in absorbing excess oil in fried foods.

  On the other hand, kitchen paper has very few opportunities to come into contact with oil and water at 90 ° C or higher except for applications where excess oil in deep-fried foods is absorbed. In this range, foamed hardened substances are intended for use in other applications. Without foaming, it can be handled in the same way as conventional kitchen paper when wiping off.

<Invention of Claim 3>
The paper thickness of the entire kitchen paper is 700 μm or less, the basis weight of each crepe paper is 10 to 42 g / m ² , and the density is 2.5 × 10 ^{4 to} 4.2 × 10 ⁵ g / m ^3. The kitchen paper of 1 or 2.

(Function and effect)
When the basis weight and density of each crepe paper are within the above ranges within the paper thickness range of the kitchen paper, the liquid absorption rate when the voids are formed by foaming of the foamable curable substance is excellent and flexible. It is soft and can be wiped off firmly.

<Invention of Claim 4>
The line width of the linear to arranged the adhesive is a 0.25-2.00 mm, claims 1 to 3 area of a section surrounded by the adhesive disposed linearly is 25 to 100 mm ² The kitchen paper of any one of.

(Function and effect)
Within the scope of the present invention, a sufficient space is secured between the crepe papers when the foamable curable substance is foamed. In addition, when the fried food is placed, the foamed adhesive portion formed by the foamed ink in contact with the foamed foam has a sufficient scattered density. As a result, the deep-fried food can be sufficiently supported, and the gap is not reliably crushed.
Furthermore, if it is said range, the softness and suppleness as the whole kitchen paper can fully be ensured.
Moreover, the area of the compartment is in the range of the present invention, good balance between the range rising wide such as absorption and oil is suppressed.

<Invention of Claim 5>
On the other hand, the ratio of the total area of the adhesive provision part with respect to a paper surface is 5 to 30%, The kitchen paper of any one of Claims 1-4.

(Function and effect)
The same effects as in the third aspect are obtained.

<Invention of Claim 6>
The kitchen paper of any one of Claims 1-5 by which the lipophilic base material is carry | supported by the any surface of two sheets of each crepe paper.

(Function and effect)
By supporting the lipophilic substrate, the affinity between the oil and the crepe paper is improved, thereby improving the oil absorption speed.

<Invention of Claim 7>
The said crepe paper is strip | belt-shaped, and the said strip | belt-shaped crepe paper to which the perforation line for cutting over the width direction was arrange | positioned in the longitudinal direction at predetermined intervals is wound in roll shape. Kitchen paper as described in

(Function and effect)
Kitchen paper in which crepe paper is rolled up is easy to manufacture. In addition, when the roll-shaped kitchen paper has the same roll diameter, the winding length (usable length) is reduced in proportion to the bulkiness of the sheet, but the present invention does not have embossed crepe paper. There is no bulk due to embossing, and since the foamable curable substance is contained in an unfoamed state, there is an advantage that the winding length can be increased, and it is effective in such roll-shaped kitchen paper. Is expensive. Moreover, convenience is enhanced by arranging the perforation line.

  As described above, according to the present invention, kitchen paper that is particularly suitable for use in absorbing excess oil content of deep-fried food is provided while having a function as normal kitchen paper.

It is a perspective view for demonstrating the kitchen paper X1 of this invention. It is sectional drawing of the kitchen paper X1 of this invention. It is other sectional drawing of the kitchen paper X1 of this invention. It is a perspective view of the roll form of the kitchen paper X1 of this invention.

Next, an embodiment of the kitchen paper of the present invention will be described. The kitchen paper X1 of this Embodiment is shown in FIGS.
As shown in FIGS. 1 to 3, this kitchen paper X1 is formed by laminating and integrating two sheets of crepe paper 1, 2 through adhesives 3, 3,. It has a plurality of compartments surrounded by a linearly arranged adhesive, and the adhesive contains unexpanded foamable curable material that expands by expansion by heat and hardens after expansion. .

  In the present invention, the adhesives 3, 3,... Are arranged in a linear form as described above. As a result, the gap between the crepe papers can be formed by foaming of the foamable curable substance, and the formed gap is partitioned, so that the liquid absorption amount is sufficient, and Oil or the like absorbed in the compartment does not move to another compartment. Here, the partitions do not necessarily have to be regularly arranged as in the lattice shape shown in FIG. 1, and may be randomly arranged. The shape of the section is not limited to the illustrated lattice such as a hexagon or a triangle.

Here, the line width L1 of the adhesive 3 is preferably 0.25 to 2.00 mm. In this case, it is desirable that the area of the one section P surrounded by the linearly arranged adhesives 3 and 3 is 25 to 100 mm ² . When the line width L1 is less than 0.25 mm, the adhesion between the crepe papers 1 and 2 becomes insufficient and the foamable curable substance cannot be sufficiently contained, and the effect of foaming of the foamable curable substance becomes insufficient. It is not sufficient to support fried foods, etc., and void retention is deteriorated. On the other hand, if it exceeds 2.00 mm, the rigidity of the paper by the adhesive is increased, the softness and flexibility are lowered, and the adhesive part is too much to be inferior in liquid absorbency.

  Furthermore, as for the application | coating aspect of an adhesive agent, it is desirable that the ratio of the total area of the adhesive provision part with respect to the one paper surface of the kitchen paper X1 is 5 to 30%. If it is less than 5%, the adhesion between the crepe papers becomes insufficient, and if it exceeds 30%, the bonded part becomes too wide, the kitchen paper becomes hard, and the liquid absorbency becomes insufficient.

  On the other hand, it is desirable that the foamable curable substance contained in the adhesive is foamed at 90 to 200 ° C. In the present invention, the foam thickness increases the paper thickness L2 by 100 μm or more compared to before foaming. Is desirable.

  Here, the kitchen paper X1 of the present invention has a paper thickness L2 of 700 μm or less, preferably 500 μm or less. If it exceeds 700 μm, the paper thickness is too thick, and it is difficult to obtain the effect of the present invention that the paper thickness becomes thick due to foaming of the foamable curable substance when used in a compact state during transportation.

  To summarize the above points, the relationship between the foamable curable substance and the paper thickness in the kitchen paper X1 of the present invention is 700 μm or less, preferably 500 μm or less before foaming, and the paper thickness L3 is reduced by foaming of the foamable curable substance. It is a particularly preferable form that it exceeds 700 μm.

As a measuring method of the paper thickness, it is measured using a dial thickness gauge (thickness measuring instrument) such as “PEACOCK G type” (manufactured by Ozaki Seisakusho) under the conditions of JIS P8111. Specifically, confirm that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table, move the memory of the dial thickness gauge to adjust the zero point, and then Raise the plunger, place the sample on the test bench, slowly lower the plunger and read the gauge at that time. Here, before placing the sample on the test bench, a weight of 75 g (flat bottom surface and bottom area 30 cm ² ) is placed for 60 seconds. At this time, only the plunger is placed. The thickness is an average value obtained by performing measurement 10 times.

  Here, when the foamable curable substance foams at 90 to 200 ° C., when the external environment of the adhesive portion reaches 90 to 200 ° C. in the state of kitchen paper, more specifically, the adhesive on the paper surface. This means that the foamable curable substance foams when an object at 90 to 200 ° C. comes into contact with the part or when the kitchen paper itself is placed in an environment at 90 to 120 ° C. However, since this depends on the foaming temperature of the foamable curable substance itself, it is sufficiently achieved if the foamable curable substance foams at 90 to 200 ° C.

Furthermore, an increase in paper thickness due to foaming of the more desirable foamable curable material of kitchen paper X1 of the present invention is an increase in paper thickness of 100 μm under a load of at least 2.5 g / cm ² . In summary, the most preferred example of the kitchen paper in the present invention is that the paper thickness is 700 μm or less, preferably 500 μm or less, and the foamable curable substance is foamed at 90 to 200 ° C. under a load of 2.5 g / cm ^2. The paper thickness exceeds 700 μm.

Here, the increase in the paper thickness under the load of 2.5 g / cm ² is specifically assumed when the fried food is placed, and the kitchen paper is placed on the horizontal table G as shown in FIG. On top of that, a weight 10 of 90 g at 90 to 200 ° C. (flat bottom surface and bottom area 30 cm ² ) is placed and the weight is removed when the weight is removed after 60 seconds, or 75 g ((flat bottom surface and bottom area 30 cm ² ) Place the weight and leave it in a constant temperature bath at 90-200 ° C for 60 seconds, then take it out of the constant temperature bath, remove the weight and measure the increase in paper thickness when measured. It can be defined as good.

<Crepe paper>
The crepe papers 1 and 2 of the present invention are known papermaking techniques for crepe paper, in which a papermaking raw material mainly composed of raw material pulp is passed through a wire part, a press part, a dryer part, a creping part and the like in the same manner as a known kitchen paper. Can be manufactured. However, the crepe papers 1 and 2 of the present invention are not provided with embossing. Since the effects of the present invention can be sufficiently exerted without embossing, embossing increases the complexity of production and increases costs in the present invention. If it has been applied, the paper thickness will increase and the transportability will also decrease.
The crepe papers 1 and 2 of the present invention may be dry crepe paper or wet crepe paper, but are preferably crepe paper by a dry crepe method.

  The crepe papers 1 and 2 are preferably 100% pulp raw materials as the fiber raw material, and as the raw material pulp types, known pulp types used for crepe paper production are used. It does not matter whether the raw pulp is exposed or unexposed. However, bleached pulp called bleached pulp is desirable. Among the pulp raw materials, it is desirable to blend LBKP (hardwood kraft pulp) and NBKP (conifer kraft pulp) at an appropriate ratio. When using LBKP and NBKP, it is desirable that LBKP: NBKP is 0: 100 to 50:50.

The crepe papers 1 and 2 of the present invention preferably have a basis weight of 10 to 42 g / m ² and a density of 2.5 × 10 ^{4 to} 4.2 × 10 ⁵ g / m ³ . The thickness is desirably in the range of 100 to 350 μm. The basis weight and basis weight in the present invention and the specification refer to values measured based on JIS P 8113. The density is a numerical value obtained by dividing the basis weight by the thickness. The crepe paper thickness measurement method is the same as the kitchen paper measurement method described above. Under the conditions of JIS P 8111, a dial thickness gauge (thickness measuring instrument), for example, “PEACOCK G type” (manufactured by Ozaki Seisakusho). Use to measure.

When the basis weight is less than 10 g / m ² , it becomes difficult to maintain the minimum paper strength and absorption amount as kitchen paper, and when it exceeds 42 g / m ² , it becomes hard and the usability is lowered. Further, when the density is less than 2.5 × 10 ⁴ g / m ³ , the absorption rate and amount of absorption of water and oil are not sufficient, and when the density exceeds 4.2 × 10 ⁵ g / m ³ , it becomes hard and wiped off. Deterioration of the property and handling property when laid on a tray, a plate, a bat, etc. are also deteriorated.

  In addition, in the kitchen paper X1 of this invention, it is good that the crepe rate of the crepe papers 1 and 2 is 13 to 35%. The crepe rate in the present invention can be calculated by (((peripheral speed of the dryer during papermaking) − (peripheral speed of the reel)) / (peripheral speed of the dryer during papermaking) × 100).

  In the present invention, the two crepe papers need not have the same configuration. Different configurations may be used as appropriate within the scope of the present invention.

<Adhesive>
The adhesive 3 for bonding the crepe papers 1 and 2 contains the foamable curable substance in an unfoamed state. As the main component of the adhesive other than the foamable curable substance, a known adhesive substrate can be used. Specific examples include acrylic resins, vinyl acetate resins, vinyl acetate-ethylene copolymer resins, urethane resins, and chlorides. A vinyl-type resin etc. are mentioned.

  For applying the adhesive to the crepe paper, a known pattern printing technique or pattern coating technique can be used. Specifically, the adhesive can be applied by gravure printing, flexographic printing, or the like.

<Foaming curable substance>
As the foamable curable substance, those used in known foamed inks and the like can be used. In addition, the foamed ink prepared in advance may be mixed and contained in the adhesive base material, or without using the adhesive base material, the binder component in the foamed ink functions as the adhesive base material, It may be used as an adhesive containing a foamable curable material.

  Specific examples of the foamable curable substance include microcapsules in which a core substance having a property of expanding by heat is encapsulated in a coating or shell of a thermoplastic polymer material. The particle size and the like of the microcapsule can be appropriately selected depending on the foamability of the microcapsule, the printing machine to be used, and the like.

  This type of foamable curable material maintains its expanded state when the core material expands at an appropriate temperature and the coating or shell expands. In the present invention, this expanded state, that is, the cured state may be maintained for at least about 1 hour. The cured state is preferably maintained permanently. The term “curing” as used in the present invention includes the states of elasticity, rigidity, and rigid elasticity.

  Here, it is desirable that the foamable curable material of the present invention foams at 90 to 120 ° C. This is because, as described above, the temperature of a general oil when frying is about 180 ° C., and when the fried food is taken out from the oil at this temperature, the temperature of the fried food is reduced to about 100 to 120 ° C. This is because it is particularly suitable for use in absorbing excess oil in fried foods.

Specific examples of the thermoplastic polymer material forming the microcapsule coating or shell are selected from acrylic resins such as methyl methacrylate and acrylonitrile, vinylidene chloride, polyamide, polybutadiene, urethane resins, styrene resins, and the like. Specific examples of the core substance having the property of expanding and curing by heat include hydrocarbon-based compounds such as butane and isobutane, and the like. Other organic solvents, organic substances that generate decomposition gas such as carbon dioxide gas such as sodium bicarbonate, sodium carbonate, ammonium carbonate, azide compound, hydrazide compound, nitrogen gas, and inorganic substances can be mentioned.
Examples of more specific foamable curable substances include Expancel series manufactured by Expancel, Microsphere manufactured by Matsumoto Yushi Seiyaku Co., Ltd., and the like.

  The blending ratio of the foamable curable substance can be appropriately adjusted in consideration of the foamability of the foamable curable substance and the adhesiveness of the adhesive substrate. The amount is generally 3 to 20 parts by weight with respect to 20 to 60 parts by weight of the adhesive base material.

<Lipophilic substrate>
On the other hand, it is desirable that the oleophilic base material is carried on the crepe papers 1 and 2 in order to improve the oil absorption speed of the kitchen paper X1. It is not limited which of the two crepe papers 1 and 2 is supported and on which surface the oleophilic substrate is supported. It may be carried on both of the two sheets, or may be carried on only one sheet. Moreover, you may carry | support on only one side of each crepe paper 1 and 2, and may carry on both surfaces. However, it is preferable that the two crepe papers 1 and 2 are supported partially or entirely on the opposing surfaces by coating or the like. The oil easily moves to the crepe paper, and the oil once absorbed is easily held, and the oil is easily held in the gap.

  Specific examples of the lipophilic substrate include hydrocarbons, liquid paraffin, triglycerides, fatty acid amides, acrylic ester copolymers, sucrose esters, and isostearic esters. Of these, liquid paraffin and triglyceride are suitable. Liquid paraffin is excellent in terms of oxidation stability and is particularly preferably used. Among triglycerides, those composed of saturated fatty acids having 6 to 12 carbon atoms, particularly medium chain fatty acids are particularly preferred. By being saturated, it is excellent in oxidation stability, and by having 6 to 12 carbon atoms, the permeability to the sheet is improved with an appropriate molecular weight. In addition, the triglyceride form is more effective in enhancing the oil diffusion and permeability than the simple linear fatty acid.

  The content of the oleophilic substrate is preferably 1 to 20% by weight of the weight per 1 or 2 sheets of crepe paper. If it is less than 1% by weight, a sufficient effect may not be exhibited. If it exceeds 20% by weight, the affinity will be good, and the oil will remain on the front and back surfaces of the crepe papers 1 and 2, and the gap between the two crepe papers will be lost. Oil movement may be slow.

  The method of supporting the oleophilic substrate on the crepe papers 1 and 2 may be either internal addition or external addition. For example, if it is internally added, it is possible to use a method of making a raw pulp or a raw pulp slurry to which a lipophilic substrate is added, and if externally adding, after forming the crepe paper base paper, A method of spraying, applying, and coating an oily substrate can be employed. In the case of spraying, a known spray device that sprays the drug on the crepe paper base paper can be used, and if coating is performed, a known coating machine or printing machine can be used.

<Roll form>
Next, the kitchen paper of the present invention in roll form will be described with reference to FIG. 4 (note that the adhesive application portion is omitted in FIG. 4).
In the kitchen paper of the present invention, two strip-shaped crepe papers 1 and 2 are laminated and integrated with the adhesive, and this is formed into a tube core 5 having substantially the same width as the width of the crepe papers 1 and 2 in the short direction. It is desirable to be in the form of a roll by wrapping or the like (hereinafter, kitchen paper in a state where two strip-shaped crepe papers 1 and 2 are laminated and integrated with an adhesive is simply referred to as a sheet 12).

  As the tube core 5, a known one used for this type of kitchen paper can be used. If a general example is shown, the outer diameter (winding diameter) L4 is 30-50 mm, and the width H is about 100-250 mm.

  The winding length of the sheet 12 can be 8.8 to 30 m, and when the tube core 5 is used, the outer diameter of the kitchen paper X2 is 90 to 130 mm. This is longer than commercial kitchen paper.

  On the other hand, as shown in particular in FIG. 4, it is desirable that the sheet 12 of this embodiment is provided with perforation lines 6 extending in the sheet width direction at predetermined intervals L5 in the sheet longitudinal direction. The perforated lines 6, 6,... Make the sheet 12 easy to cut. The predetermined interval L5 is preferably about 48 to 250 mm. If it is less than 48 mm, it will be too small for actual use, and if it exceeds 250 mm, it will become larger compared to tableware and the like, resulting in poor usability.

  The perforation line 6 can be formed by a known perforation roll (sewing blade roll) facility. That is, in the previous stage of winding around the tube core 5, a blade row is formed by arranging a large number of blades along the width direction on a roll wider than the width of the sheet 12, and this blade row is the same as the predetermined interval L5. By rotating a plurality of perforation rolls provided in the circumferential direction of the roll at a pitch and bringing them into contact with the traveling sheet 12, perforation lines 6 extending in the width direction of the sheet 12 are formed at predetermined intervals L5 in the longitudinal direction. can do.

  In addition, as for the kitchen paper X2 of this form, it is suitable that the perforation line 6 is more than a double line like the example of illustration. In forming a plurality of perforation lines, the perforation roll equipment provided with perforation rolls of appropriate multiple blade rows may be used. In this case, the perforation line 6 does not need to be doubled over the entire sheet width direction. For example, only the width direction side portion of the sheet 12 may be doubled.

  Further, in the case where the perforation line 6 is double, referring to Japanese Patent Application Laid-Open No. 2003-276936, for example, the cut part is staggered, or the end part of the cut part of one perforation line and this cut part The angle formed by the perforation line with respect to the straight line connecting the end part of the cut part of the other perforation line closest to the end of the perforation can be made to be easy to cut, for example.

  Here, the kitchen paper X2 of this embodiment preferably has a tensile strength in the sheet longitudinal direction at the perforation line 6 of 100 to 500 cN. If the tensile strength in the longitudinal direction of the sheet at the perforation line 6 is 100 cN or more, unintentional division at the perforation line 6 at the time of sheet unwinding is reliably prevented. On the other hand, when the tensile strength in the longitudinal direction of the sheet at the perforation line 6 is 500 cN or less, the sheet 12 can be reliably and easily cut at the desired perforation line 6 to be cut.

  Here, “tensile strength” means the tensile strength at dryness measured in accordance with the tensile property test method defined in JIS P8113. This means not the tensile strength of the sheet 12 itself, that is, the sheet 12 without the perforation line 6, but the tensile strength measured across the perforation line 6 with respect to the sheet 12 with the perforation line 6.

  The tensile strength in the longitudinal direction at the perforation line 6 can be adjusted by adjusting the tie length that is the connecting portion at the perforation line 6 and the cut length that is the same dividing portion, or between the tie length and the cut length. This can be done by adjusting the tie cut ratio, which is the ratio. More specifically, it can be adjusted by replacing with a perforation roll having a blade row having a desired tie cut length and tie cut ratio. The tensile strength is adjusted by adjusting the pressing pressure of the perforation roll against the sheet 12 (the pressing force (kgf / cm) against the sheet 12 per sheet unit width) or the winder speed (winding of the sheet 12). It can also be adjusted by adjusting the (speed).

  On the other hand, in the kitchen paper X2 of this embodiment, the ratio of the tensile strength in the sheet longitudinal direction at the perforation line 6 to the tensile strength in the sheet longitudinal direction of the sheet 12 itself is 1.0 to 50% (preferably 2.0). 10%) is preferable. If the ratio of the tensile strength is 50% or less, the tensile strength of the sheet portion without the perforation line 6 is relatively high. Therefore, when the sheet 12 is cut, the sheet 12 is formed in a sheet portion other than the perforation line 6. The cutting is suppressed, and the cutting can be reliably performed at the perforation line 6. On the other hand, if the ratio of the tensile strength is 1.0% or more, the tensile strength of the perforation line 6 is relatively high, so that the perforation line 6 is increased by shortening the interval between the perforation lines 6. In addition, unintentional separation at the perforation line 6 during sheet unwinding can be reliably prevented.

  Here, the tensile strength in the longitudinal direction of the sheet 12 itself is also measured in accordance with the tensile property test method defined in JIS P 8113. Of course, this is the tensile strength when the sheet portion without the perforation line 6 is dried.

  In order to set the tensile strength in the longitudinal direction of the sheet at the perforation line 6 to 10 to 200 cN and the ratio of the tensile strength to 1.0 to 50%, the tie length of the perforation line 6 is set to 0. The cut length may be 0.9 to 37.5 mm and the tie cut ratio (tie: cut) may be set to 1:15 to 1: 1.

<Test example>
Subsequently, the test example regarding the especially preferable form concerning the kitchen paper of this invention is shown below.
First, Table 1 below shows the relationship between the paper thickness, the winding diameter, and the winding length of roll-shaped kitchen paper. Note that the thickness of two embossed kitchen papers that are generally commercially available is about 700 μm. The basis weight of the sample used in this test was 28 g / m ² . In addition, when an oleophilic substrate is applied, the oil diffusion rate increases, but it does not affect the winding length, paper thickness, and absolute oil absorption.Therefore, the oleophilic substrate is applied in this test example. Absent.

Next, the relationship between the adhesion area ratio and the oil absorption amount in the kitchen paper of the present invention is shown in Table 2 below. Note that the sample used in this test (kitchen paper; two sheets of crepe paper adhered) had an initial thickness of 440 μm and was adjusted so that the paper thickness increased by 300 μm due to foaming of the foamable curable substance. Further, as shown in Table 2, the crepe paper used was 21 g / m ² or 28 g / m ² .

  The amount of oil absorption is measured after measuring the weight of a dry sample cut to 100 mm square, then immersing the sample in salad oil (Nisshin Oilio Group Co., Ltd.) for 15 seconds, and then measuring the weight after 25 seconds. The value obtained by subtracting the weight of the dried sample from the measured value was used.

The oil absorption amount of a commercially available product (conventional product) having a paper thickness of 720 μm in which embossing is applied to each of the two crepe papers is approximately 680 g / m ² .

  From Table 2, in the kitchen paper of the present invention, the difference in the oil absorption amount due to the difference in the adhesion area ratio is not seen before foaming, but the adhesion area ratio is 3 to 35%, especially 5 to 25 after foaming. %, The oil absorption tends to be remarkably good. Therefore, it can be said that the preferable adhesion area ratio in the present invention is 3 to 35%, and the particularly preferable adhesion area ratio is 5 to 25%.

Also, from the relationship between the results in Table 2 and the paper thickness and winding diameter in Table 1, it was confirmed that the kitchen paper of the present invention can increase the winding length while ensuring the same amount of oil absorption as that of the conventional product. it can. For example, when the paper thickness is 440 μm for two sheets, the basis weight is 28 g / m ² , the adhesion area ratio is 7%, and the paper thickness after foaming is 740 μm, the kitchen paper having the corresponding emboss has a winding length of 11 m. On the other hand, in this embodiment, it is possible to wind about 20 m, which is about twice as long as the same winding diameter, which is very excellent in terms of transportation and storage.

  Next, Table 3 below shows the test results regarding the relationship between the rice paper weight, density, and paper thickness of the crepe paper in the kitchen paper of the present invention. Note that the crepe paper used here was obtained by forcibly peeling each adhered crepe paper after making it into kitchen paper. Accordingly, an adhesive is applied to the crepe paper. The paper density was calculated by (the basis weight / paper thickness). The absorption rate in the table is the time until the gloss disappears after 1 cc of oil is dropped on the paper. Whether it disappeared or not was judged visually. As an evaluation, it can be said that 60 seconds or less is preferable.

  The ease of tearing was judged based on whether or not 20 subjects actually used the sample for wiping and felt that it was easily broken. In the evaluation, △ indicates that 10 or more people felt that it was likely to be broken.

Many subjects with basis weights of 10 g / m ² and 17 g / m ² are likely to break during use, and the density is 2.17 × 10 ⁵ g / m ³ , 2.67 × 10 ⁵ g / m ^3. There is a tendency for the liquid absorption speed to become slow. Therefore, in consideration of a decrease in liquid absorbency due to the application of the adhesive, at least the basis weight of the kitchen paper of the present invention is preferably 21 to 32 g / m ² , and the density is preferably 0.83 × 10 ⁵ to 1. .94 × 10 ⁵ g / m ³ .

From Table 3, especially suitable basic weight and density in the kitchen paper of this invention satisfy | fill both of these, the basic weight is 21-32 g / m < ² >, and a density is 1.22 * 10 < ⁵ > -1.94. × 10 ⁵ g / m ³

  DESCRIPTION OF SYMBOLS 1 ... 2 ... Crepe paper, 3 ... Adhesive provision part (adhesive), 4 ... Space | gap, 5 ... Pipe core, 6 ... Perforation line, 10 ... Weight (foodstuff etc.) 12 ... Sheet, P ... Section, L1 ... Line width, L2 ... foam thickness of unfoamed curable material, L3 ... paper thickness in foamed curable material, L4 ... outer diameter (winding diameter), L5 ... perforation spacing, G ... horizontal platform, X1, X2 ... Kitchen paper.

Claims (7)

  Two crepe papers without embossing are laminated and integrated via an adhesive arranged in a line, and have a plurality of sections surrounded by the adhesive arranged in a line, and A kitchen paper characterized in that a foamable curable substance that expands by heating to an adhesive and expands and hardens after expansion is contained in an unfoamed state. 2. The kitchen paper according to claim 1, wherein the foamable curable substance foams at 90 to 200 ° C., and the foaming increases the paper thickness by 100 μm or more as compared to before foaming. The paper thickness of the entire kitchen paper is 700 μm or less, the basis weight of each crepe paper is 10 to 42 g / m ² , and the density is 2.5 × 10 ^{4 to} 4.2 × 10 ⁵ g / m ^3. The kitchen paper of 1 or 2. The line width of the linear to arranged the adhesive is a 0.25-2.00 mm, claims 1 to 3 area of a section surrounded by the adhesive disposed linearly is 25 to 100 mm ² The kitchen paper of any one of.   On the other hand, the ratio of the total area of the adhesive provision part with respect to a paper surface is 5 to 30%, The kitchen paper of any one of Claims 1-4.   The kitchen paper of any one of Claims 1-5 by which the lipophilic base material is carry | supported by the any surface of two sheets of each crepe paper.   The said crepe paper is strip | belt-shaped, and the said strip | belt-shaped crepe paper to which the perforation line for cutting over the width direction was arrange | positioned in the longitudinal direction at predetermined intervals is wound in roll shape. Kitchen paper as described in

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