WO2018003584A1

WO2018003584A1 - Warming sheet

Info

Publication number: WO2018003584A1
Application number: PCT/JP2017/022582
Authority: WO
Inventors: 俊久林; 野田　祐樹; 隆宏植田; あゆみ鞍迫
Original assignee: ユニ・チャーム株式会社
Priority date: 2016-06-27
Filing date: 2017-06-19
Publication date: 2018-01-04
Also published as: MY194036A; CN109414505A; EA201892575A1; KR20190022509A; KR102414416B1; TWI762490B; JP6903053B2; EA039732B1; JPWO2018003584A1; TW201815363A

Abstract

The purpose of the disclosure is to provide a warming sheet that does not tend to cause low-temperature burns and the fixing part of which does not tend to remain on clothing. The warming sheet of the disclosure has the following configuration. A warming sheet (1) equipped with a liquid-retaining and liquid-permeable skin contact sheet (7), a liquid-impermeable clothing contact sheet (11), and a fixing part (13) for fixing to clothing in that order, wherein the warming sheet (1) is characterized in that the warming sheet (1) includes a warming agent that activates TRP channels and a solvent, and does not include an exothermic agent.

Description

Thermal sheet

This disclosure relates to a warm sheet.

There is a known thermal sheet that applies heat to the wearer's body. For example, in Patent Document 1, one side is made of a breathable multilayer structure obtained by laminating a nonwoven fabric and a porous film, and the other side is a sticking face having sticking means. A bag for containing a heat-generating composition that generates heat in the presence of the breathable multilayer structure, wherein the lateral dimensional change rate at 50 ° C. with respect to the size at 20 ° C. is a positive value; And an exothermic composition-containing bag, characterized by having a compression energy of 0.15 gfcm / cm 2 or more.

JP 2006-239015 A

In the exothermic composition-accommodating bag described in Patent Document 1, an oxidation reaction of metal powder is used to impart warm heat to the wearer. Therefore, when using the bag for containing a heat generating composition, the heat generated by the bag for storing a heat generating composition may cause a low-temperature burn at a site in contact with the heat generating composition containing bag of the wearer. In addition, as the exothermic composition containing bag generates heat and water vapor, the affixing means for fixing to the wearer's clothes softens, and after the exothermic composition containing bag is used, the exothermic composition containing bag is peeled off from the clothes. When the exothermic composition-containing bag is discarded, the sticking means may remain on the clothes, and the sticking means may contaminate the clothes.
Accordingly, an object of the present disclosure is to provide a warm sensation sheet that is unlikely to cause low-temperature burns and in which a fixed portion is less likely to remain on clothes.

The present disclosure is a warm sensation sheet comprising a liquid retaining and liquid permeable skin contact sheet, a liquid impervious clothing contact sheet, and a fixing portion for fixing to the clothes in that order. Thus, the present invention has found a warming sheet characterized in that the warming sheet includes a warming composition containing a warming agent that activates a TRP channel and a solvent, and does not contain a heat generating agent.

The warm sheet of the present disclosure is less likely to cause low-temperature burns, and the fixed part is less likely to remain on the clothes.

FIG. 1 is a perspective view of an individual wrapping body 3 of a warm sensation sheet in which individual warm sensation sheets 1 according to the first embodiment are packaged. FIG. 2 is a perspective view of the warm sensation sheet 1 according to the first embodiment. FIG. 3 is a plan view of the warm sensation sheet 1 according to the first embodiment. FIG. 4 is a rear view of the warm sensation sheet 1 according to the first embodiment. FIG. 5 is an exploded perspective view of the warm sensation sheet 1 according to the first embodiment. Drawing 6 is a figure for explaining a wearing state of warm feeling sheet 1 according to a 1st embodiment.

Specifically, the present disclosure relates to the following aspects.
[Aspect 1]
A temperature-sensitive sheet comprising a liquid retaining and liquid permeable skin contact sheet, a liquid impervious clothing contact sheet, and a fixing portion for fixing to the clothes in that order.
The warm sheet includes a warm composition comprising a warm agent that activates the TRP channel and a solvent, and does not include a heat generating agent.
The above-mentioned warm feeling sheet characterized by the above-mentioned.

Since the warm sheet does not include a heat generating agent and includes a predetermined warm composition containing a warm agent, it is possible to impart warmth to the wearer without directly heating the wearer's skin from the outside. it can. Therefore, when the warmth sheet is fixed to the wearer's clothes and used, the skin of the wearer is less likely to cause a low-temperature burn at the warming agent contact part that is in contact with the warmth sheet. Can give a warm feeling. In addition, since the warm feeling sheet can give warm feeling to the wearer without directly heating the wearer's skin from the outside, after using the warm feeling sheet fixed to the wearer's clothes, The fixing part is difficult to soften, and when the warm sheet is discarded, the fixing part hardly remains on the clothes.

[Aspect 2]
The warming sheet according to aspect 1, wherein the warming agent is an agonist for the TRPV1 receptor.
In the above-described warming sheet, since the warming agent is an agonist for the TRPV1 receptor, when using the warming sheet, the wearer may feel a temperature exceeding 43 ° C., which is called an activation temperature threshold of the TRPV1 receptor. It is possible, and the wearer can easily remember the warm feeling. In addition, the above-mentioned warming sensation activates the TRPV1 receptor in the warming agent contact part of the wearer's skin that was in contact with the warming sensation. And the temperature of the contact area of the warming agent on the wearer's skin can be raised.

[Aspect 3]
The warmth sheet according to aspect 1 or 2, wherein the skin contact sheet includes the warmth composition.
In the warm feeling sheet, since the skin contact sheet in contact with the skin of the wearer contains the predetermined warm feeling composition, the wearer can easily feel warm feeling from the early stage after wearing when using the warm feeling sheet. .

[Aspect 4]
The warming sheet according to any one of embodiments 1 to 3, wherein the warming composition contains the solvent in a ratio of 50.0 to 99.9% by mass.
In the warm sensation sheet, since the warm sensation composition contains a predetermined proportion of the solvent, the wearer can easily feel the warm sensation from an early stage after wearing and for a long time when using the warm sensation sheet.

[Aspect 5]
5. The warm sensation sheet according to any one of aspects 1 to 4, wherein the skin contact sheet has a higher air permeability than the clothing contact sheet.

In the warm feeling sheet, since the air permeability of the skin contact sheet is higher than the air permeability of the clothing contact sheet, the solvent contained in the warm composition moves outside through the skin contact sheet. The fixing part is not easily affected by the solvent, and the fixing part is less likely to remain on the clothes when the warm sheet is discarded. In addition, when heat and moisture such as sweat are generated from the warming agent contact portion of the wearer's skin that is in contact with the warming agent, the heat and moisture such as sweat are applied to the clothing. Since it is difficult to reach the fixing part through the contact sheet, the fixing part is not easily affected by moisture such as heat and sweat, and the fixing part is less likely to remain on the clothes when the thermal sheet is discarded.

[Aspect 6]
The warm sensation sheet according to any one of aspects 1 to 5, wherein the skin contact sheet has a thermal conductivity lower than that of the clothing contact sheet.
In the above-mentioned thermal sensation sheet, the heat conductivity of the skin contact sheet is lower than the thermal conductivity of the clothing contact sheet. However, it becomes difficult to pass through the skin contact sheet and reach the inside of the warm sensation sheet, and thus the fixing portion of the warm sensation sheet. As a result, the fixing portion is not easily affected by the heat, and the fixing portion is less likely to remain on the clothes when the warm sheet is discarded.

[Aspect 7]
The warm sensation sheet according to any one of aspects 1 to 6, further comprising an intermediate layer between the skin contact sheet and the clothing contact sheet.
In the above warm feeling sheet, since it further includes an intermediate layer between the skin contact sheet and the clothing contact sheet, moisture such as heat and sweat generated from the heat sensitive agent contact portion of the skin of the wearer Passing through the contact sheet, it is difficult to reach the inside of the thermal sheet, and thus the fixed part of the thermal sheet, so that the fixed part is not easily affected by moisture, etc. due to heat and sweat, and the thermal sheet is discarded. At this time, the fixing portion is less likely to remain on the clothes.

[Aspect 8]
The warm feeling sheet according to aspect 7, wherein the air permeability of the intermediate layer is higher than the air permeability of the clothing contact sheet.
In the warm feeling sheet, since the air permeability of the intermediate layer is higher than the breathability of the clothing contact sheet, the solvent contained in the warm feeling composition moves to the outside through the skin contact sheet. It becomes difficult to be affected by the solvent, and when the warm sheet is discarded, the fixing portion is less likely to remain on the clothes. In addition, when heat and moisture such as sweat are generated from the warming agent contact portion of the wearer's skin that is in contact with the warming agent, the heat and moisture such as sweat are applied to the clothing. Since it is difficult to reach the fixing part through the contact sheet, the fixing part is not easily affected by moisture such as heat and sweat, and the fixing part is less likely to remain on the clothes when the thermal sheet is discarded.

[Aspect 9]
The heat-sensitive sheet according to aspect 7 or 8, wherein the thermal conductivity of the intermediate layer is lower than the thermal conductivity of the clothing contact sheet.
In the warm sheet, the thermal conductivity of the intermediate layer is lower than the thermal conductivity of the clothing contact sheet, so that the heat generated from the contact portion of the wearer's skin is the skin contact sheet and the intermediate layer. Since it is difficult to reach the fixing part of the warm sensation sheet through the fixing part, the fixing part is not easily affected by the solvent, moisture, etc., and when the warm sensation sheet is discarded, the fixing part hardly remains on the clothes.

[Aspect 10]
The warm sensation sheet according to any one of aspects 1 to 9, wherein the warm sensation composition and the fixing portion are arranged at positions overlapping in the thickness direction of the warm sensation sheet.
In the warm sensation sheet, since the warm sensation composition and the fixing portion are arranged at positions overlapping in the thickness direction of the warm sensation sheet, it is easy to keep the warm sensation composition in contact with the wearer's skin. Thus, after using the warm sheet, the fixed part is less likely to remain on the clothes.

[Aspect 11]
The warming sheet according to any one of aspects 1 to 10, wherein the solvent is selected from the group consisting of water, alcohol, fats and oils, and any combination thereof.
In the warm sensation sheet, since the solvent is selected from a predetermined group, the warm sensation agent can quickly impart warm sensation to the wearer's skin.

Hereinafter, the warm sheet of the present disclosure will be described in detail.
FIG. 1 to FIG. 6 are for explaining an individual package 3 of warm sheets in which warm sheets 1 according to one embodiment of the present disclosure (hereinafter referred to as “first embodiment”) are individually packaged. FIG. Specifically, FIG. 1 is a perspective view of the individual wrapping body 3 of warm sheets. FIG. 2 is a perspective view of the warm sensation sheet 1. 3 and 4 are a plan view and a rear view of the warm sensation sheet 1, respectively. FIG. 5 is an exploded perspective view of the warm sheet 1. FIG. 6 is a diagram for explaining a wearing state of the warm feeling sheet 1. Hereinafter, the “individual package of warm sheets” may be simply referred to as “individual package”.

The warm sensation sheet 1 according to the first embodiment is a liquid retaining and liquid permeable skin contact sheet 7, an intermediate layer 9, a liquid impervious clothing contact sheet 11, and the warm sensation sheet 1. A fixing portion 13 for fixing and a release sheet 15 for temporarily fixing the fixing portion 13 are provided in that order, and have a longitudinal direction L, a width direction W, and a thickness direction T. The skin contact sheet 7 includes a warming sensation composition (not shown) on the entire surface of the skin contact sheet 7. Further, the skin contact sheet 7 has a skin contact surface 31 and a skin non-contact surface 33.

In the warm sensation sheet 1, the skin contact sheet 7, the intermediate layer 9, the liquid-impermeable clothing contact sheet 11, and the release sheet 15 are each in the planar direction (longitudinal direction L and width direction W). The shape of the outer edge is the same, and the skin contact sheet 7, the intermediate layer 9, the liquid-impermeable clothing contact sheet 11, and the release sheet 15 are overlapped in the thickness direction T. Are stacked.
The warm sensation sheet 1 includes a folding axis F extending in parallel with the width direction W at the center in the longitudinal direction L. In the individual package 3, the warm sensation sheet 1 is folded with the skin contact surface 31 of the skin contact sheet 7 on the inside with the folding axis F as a reference, and is packaged in the packaging sheet 5.

The fixed portion 13 is composed of a plurality of fixed portion portions 14. Each of the plurality of fixed portion portions 14 extends in the width direction W and reaches both ends of the temperature-sensitive sheet 1 in the width direction W. The plurality of fixed portion portions 14 are arranged at predetermined intervals in the longitudinal direction L.
The release sheet 15 has the same outer edge shape as the clothing contact sheet 11 and is disposed so as to cover the entire fixing portion 13 (the plurality of fixing portion portions 14).

As shown in FIG. 1, the warm sensation sheet 1 is wrapped in a wrapping sheet 5 in a folded state, and an individual wrapping body 3 is formed. Specifically, the individual wrapping body 3 is composed of two wrapping sheets 5 each of which is a warm sensation sheet 1 that is folded in two with the skin contact surface 31 of the skin contact sheet 7 as an inner side with respect to the folding axis F. It is formed by providing a seal portion 101 at the peripheral edge of the two packaging sheets 5.

The wearer opens the individual packaging body 3 from the cutout portion 103 of the individual packaging body 3 of the thermal sensation sheet, takes out the thermal sensation sheet 1 from the individual packaging body 3, and peels the release sheet 15 from the thermal sensation sheet 1. Next, as shown in FIG. 6, the wearer fixes the fixing portion 13 of the thermal sensation sheet 1 to the clothing 21, specifically the inner surface of the shorts, and the skin contact surface 31 of the thermal sensation sheet 1 wears. The thermal sensation sheet 1 is used in a state in contact with the person's skin.

As shown in FIGS. 3 and 4, the warm sensation sheet 1 has a peripheral edge 25 that is a region within a predetermined distance from the outer peripheral edge 23 of the warm sensation sheet 1. The warm sensation sheet 1 does not have an embossed portion at the peripheral edge portion 25. By doing so, when the wearer wears the warming sensation sheet 1 and during use of the warming sensation sheet 1, the wearer hardly feels the hardness of the peripheral edge 25 of the warming sensation sheet 1. In both use and use, it is excellent in wearing feeling.

A warming sensation composition (not shown) is coated on the entire surface including the peripheral edge 25 of the skin contact sheet 7 of the warming sensation sheet 1. In other words, the warm sensation sheet 1 includes a warm sensation composition (not shown) at the peripheral edge 25. By doing so, the warming composition efficiently activates the TRP channel of the warming agent contact portion of the wearer's skin that is in contact with the warming agent, and efficiently imparts warmth to the wearer. Can do.

The warm sheet 1 does not contain a heat generating agent. In the thermal sheet containing a heat generating agent, the fixing part is generally arranged at a position overlapping the heat generating agent and the thickness direction of the heat sheet for the purpose of keeping the heat generating agent in contact with the skin of the wearer. Under the influence of the heat generating agent, the temperature of the fixing part rises and the fixing part is easily softened. Therefore, when the use of the thermal sheet is finished and the thermal sheet is removed from the clothing, the softened fixing portion tends to remain on the clothing.
On the other hand, in the warm sensation sheet 1 according to the first embodiment, since the warm sensation sheet 1 itself does not generate heat, the fixing part 13 of the warm sensation sheet 1 is difficult to soften, and the use of the warm sensation sheet 1 is finished. When removing from the clothing 21, the fixing portion 13 of the warm sheet 1 is unlikely to remain on the clothing 21.

In the warming sheet of the present disclosure, the warming composition includes a warming agent that activates the TRP channel and a solvent. The warming agent is not particularly limited as long as it activates the TRP channel, and examples thereof include agonists for TRPV1 receptor, agonists for TRPV3 receptor, and the like, and agonists for TRPV1 are preferable. This is because the TRPV1 receptor has a high activation temperature threshold of over 43 ° C. and can impart a high warm feeling to the wearer.
The TRP channel to be activated by the warming agent includes a human TRP channel.

Examples of the warming agent include capsicoside, capsaicin, capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, nonivamid, etc.), capsanthin, benzyl nicotinate, β-butoxyethyl nicotinate, N-acyl. Vanillamide, nonanoic acid vanillylamide, polyhydric alcohol, chili powder, chili tincture, chili extract, nonanoic acid vanillyl ether, vanillyl alcohol alkyl ether derivative (for example, vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, Vanillylhexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratial alcohol derivative, substituted benzyl alcohol derivative Body, substituted benzyl alcohol alkyl ethers, vanillin propylene glycol acetal, ethyl vanillin propylene glycol acetal, ginger extract, ginger oil, gingerol, zingerone, as well as any combination thereof.

The warming agent is preferably a plant-derived compound from the viewpoint of the wearer's sense of security.
In the warming composition, the warming agent is preferably 0.0001 to 5.0% by mass, more preferably 0.0005 to 3.0% by mass, and still more preferably 0.1 to 1.0% by mass. And still more preferably from 0.3 to 0.7% by weight. This is from the viewpoint of the effect of the warming agent.

The above solvent includes water, alcohol, fats and oils, and any combination thereof. The warming composition contains the solvent in a ratio of preferably 50.0 to 99.9% by mass, more preferably 90.0 to 99.9% by mass. By doing so, it is easy for the wearer to learn a warm feeling from an early stage after wearing and for a long time when using the warm feeling sheet.

Examples of the alcohol include lower alcohols such as methanol, ethanol, ethylene glycol, and glycerin, and higher alcohols such as capryl alcohol, lauryl alcohol, and myristyl alcohol. Examples of the fats and oils include fatty acid esters such as triglycerides, and natural oils such as coconut oil and linseed oil.

In addition to the above-mentioned warming agent and solvent, the warming composition contains at least one other component as shown below as long as the effect of imparting warmth to the wearer is not impaired. Can do.
Examples of the at least one other component include silicone oil, silicone, and silicone resin.
Examples of the at least one other component include antioxidants such as BHT (2,6-di-t-butyl-p-cresol), BHA (butylated hydroxyanisole), and propyl gallate. It is done.

Examples of the at least one other component include vitamins such as natural vitamins and synthetic vitamins. Examples of the vitamin include water-soluble vitamins such as vitamin B group, for example, vitamin B ₁ , vitamin B ₂ , vitamin B ₃ , vitamin B ₅ , vitamin B ₆ , vitamin B ₇ , vitamin B ₉ , vitamin B ₁₂ And vitamin C.
Examples of the vitamin include fat-soluble vitamins such as vitamin A group, vitamin D group, vitamin E group, and vitamin K group.
The vitamins also include their derivatives.

Examples of the at least one other component include amino acids such as alanine, arginine, lysine, histidine, proline, hydroxyproline, and peptides.

Examples of the at least one other component include zeolites such as natural zeolites such as fluorite, chabazite, pyroxenite, natrolite, zeolitite, and somosonite, and synthetic zeolite.
Examples of the at least one other component include cholesterol, hyaluronic acid, lecithin, ceramide, placenta, collagen, elastin, squalane, petrolatum, trehalose and the like.

Examples of the at least one other component include drugs such as skin astringents, anti-acne agents, anti-wrinkle agents, anti-cellulite agents, whitening agents, antibacterial agents, and antifungal agents.
Examples of the skin astringent include oil-soluble skin astringents such as zinc oxide, aluminum sulfate, and tannic acid, such as oil-soluble polyphenols. Examples of the oil-soluble polyphenols include natural oil-soluble polyphenols such as, for example, buckwheat extract, hypericum extract, nettle extract, chamomile extract, burdock extract, salvia extract, linden extract, scallop extract, birch extract, cedar extract, sage extract, salvia extract. , Teuchigurumi extract, hibiscus extract, loquat leaf extract, bodaiju extract, hop extract, marronnier extract, yokuinin extract and the like.

Examples of the anti-acne agent include salicylic acid, benzoyl peroxide, resorcinol, sulfur, erythromycin, and zinc.
Examples of the anti-wrinkle agent include lactic acid, salicylic acid, salicylic acid derivatives, glycolic acid, phytic acid, lipoic acid, and lysophosphatide acid.

Examples of the anti-cellulite agent include xanthine compounds such as aminophylline, caffeine, theophylline, theobromine and the like.
Examples of the whitening agent include niacinamide, kojic acid, arbutin, glucosamine and derivatives, phytosterol derivatives, ascorbic acid and derivatives thereof, and mulberry extract and placenta extract.

Examples of the at least one other component include an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizer, a fragrance, a pigment, a dye, a pigment, and a plant extract. Examples of the anti-inflammatory component include naturally-occurring anti-inflammatory agents, such as buttons, ogon, hypericum, chamomile, licorice, momonoha, mugwort, perilla extract, synthetic anti-inflammatory agents, such as allantoin, dipotassium glycyrrhizinate, etc. It is done.
Examples of the pH adjuster include those for keeping the skin weakly acidic, such as malic acid, succinic acid, citric acid, tartaric acid, and lactic acid.
Examples of the pigment include titanium oxide.

The above-mentioned warming composition and warming sheet do not contain an exothermic agent. By doing so, the warming sensation sheet itself does not generate heat, and the fixing part of the warming sensation sheet is difficult to soften. , Hard to remain on clothes.

The exothermic agent is not particularly limited as long as the exothermic agent itself generates heat. For example, heat of oxidation of metal powder (for example, iron powder), heat of neutralization of acid and alkali, heat of hydration of inorganic salt And those using chemical energy such as
The warming composition and the warming sheet may contain a so-called cooling agent, for example, an agonist for TRPM8 receptor or TRPA1 receptor.

In the warming sheet of the present disclosure, the warming composition has a basis weight of the warming agent of preferably 0.001 to 10 g / m ² , more preferably 0.003 to 5 g / m ² , and still more preferably 0.00. In a basis weight of from 01 to 2.5 g / m ² , and even more preferably from 0.05 to 1.5 g / m ² . This is from the viewpoint of giving warmth to the wearer.

When the warm sensation sheet of the present disclosure does not include an additional sheet between the skin contact sheet and the clothing contact sheet, the warm sensation composition is included in the skin contact sheet. When the warm sensation sheet of the present disclosure includes an additional sheet, for example, an intermediate layer, between the skin contact sheet and the clothing contact sheet, the warm sensation composition may be included in the additional sheet. . From the viewpoint of imparting warm feeling early after the use of the warm feeling sheet is started, the warm feeling composition is preferably included in at least the skin contact sheet.

In the warm sensation sheet of the present disclosure, the air permeability of the skin contact sheet is preferably higher than the air permeability of the clothing contact sheet, more preferably 300 cm ³ / cm ² / s or more, and more preferably 500 cm ³ / s. More than cm ² / s, and more preferably more than 700 cm ³ / cm ² / s. By doing so, since the solvent contained in the warming composition moves to the outside through the skin contact sheet, the fixing part becomes less affected by the solvent, and is fixed when the warming sheet is discarded. The part is less likely to remain on the clothes. In addition, when heat is generated from the warming agent contact portion of the wearer's skin that was in contact with the warming agent, the heat generated from the warming agent contact portion, and moisture such as sweat, Since it is difficult to reach the fixing portion through the clothing contact sheet, the fixing portion is not easily affected by moisture such as heat and sweat, and the fixing portion is less likely to remain on the clothing when the thermal sensation sheet is discarded.

The skin contact sheet is preferably ^{^{300 ~ 2,000cm 3 / cm 2 /}} s, more preferably ^{^{500 ~ 1,500cm 3 / cm 2 /}} s, and more preferably 700 ~ 1,300cm ³ / cm ² / It has an air permeability of s. This is because the solvent contained in the warming composition is discharged from the skin contact sheet.
The clothing contact sheet preferably has an air permeability of 0 to 500 cm ³ / cm ² / s, more preferably 0 to 300 cm ³ / cm ² / s, and still more preferably 0 to 50 cm ³ / cm ² / s. . This is from the viewpoint of making it difficult for the solvent contained in the warming composition and moisture such as heat and sweat generated from the warming agent contact part of the wearer's skin to reach the fixed part.

In the present specification, the air permeability is measured as follows using a KES-F8-AP1 air permeability tester manufactured by Kato Tech Co., Ltd.
(1) The KES-F8-AP1 breathability tester and the sample are allowed to stand for 24 hours in a constant temperature and humidity chamber (temperature: 25 ± 5 ° C., relative humidity: 65 ± 5%).
(2) The ventilation resistance value of the sample is measured at a piston speed of 2 cm / second.
(3) The above measurement is repeated five times with different samples, and the average value is adopted as the ventilation resistance value R (kPa · s / m) of the sample.
(4) The ventilation resistance value R is calculated by the following formula:
AP (cm ³ / cm ² /s)=12.5/R
Accordingly, the air permeability is converted to AP (cm ³ / cm ² / s).

When the warm sensation sheet of the present disclosure further includes an intermediate layer between the skin contact sheet and the clothing contact sheet, the air permeability of the intermediate layer is preferably higher than the air permeability of the clothes contact sheet, More preferably, it is 300 cm ³ / cm ² / s or higher, more preferably 500 cm ³ / cm ² / s or higher, and even more preferably 700 cm ³ / cm ² / s or higher. By doing so, since the solvent contained in the warming composition moves to the outside through the skin contact sheet, the fixing part becomes less affected by the solvent, and is fixed when the warming sheet is discarded. The part is less likely to remain on the clothes. Also, when the warming agent contact portion of the wearer that has been in contact with the warming agent generates heat, the heat and moisture such as sweat pass through the clothing contact sheet to the fixing part. Since it is difficult to reach, the fixing part is not easily affected by the heat and moisture such as sweat, and the fixing part is less likely to remain on the clothes when the warm sheet is discarded.

The intermediate layer is preferably 50 to 2,000 cm ³ / cm ² / s, more preferably 100 to 1,500 m ³ / m ² / min, and even more preferably 150 to 1,300 m ³ / m ² / min. Has air permeability. This is because the solvent contained in the warming composition and the heat generated from the warming agent contact portion that has been in contact with the warming agent are discharged from the skin contact sheet.

In the warm sheet of the present disclosure, it is preferable that the thermal conductivity of the skin contact sheet is lower than the thermal conductivity of the clothing contact sheet. By doing so, the heat generated from the heat sensitive agent contact portion of the wearer's skin does not easily reach the inside of the heat sensitive sheet and eventually the fixing portion of the heat sensitive sheet through the skin contact sheet. The part is not easily affected by the solvent, moisture, and the like, and when the warm sheet is discarded, the fixing part is less likely to remain on the clothes.

In this specification, the thermal conductivity is measured by a temperature gradient method, which is a kind of steady-state method.
Specifically, one surface of the sample is heated with a SUS rod, the other surface of the sample is cooled with a Cu rod, a steady-state temperature gradient is provided in the thickness direction of the sample, and the amount of heat that moves Is divided by the temperature difference to calculate the thermal conductivity.

When the warm sheet of the present disclosure further includes an intermediate layer as an additional sheet between the skin contact sheet and the clothing contact sheet, the thermal conductivity of the intermediate layer is the thermal conductivity of the clothes contact sheet. Is preferably lower. By doing so, when heat is generated from the warming agent contact part of the wearer's skin, it is difficult to reach the inside of the warming sheet and eventually the fixing part of the warming sheet through the skin contact sheet. The fixing part is not easily affected by the solvent, moisture and the like, and the fixing part is less likely to remain on the clothes when the warm sheet is discarded.

In the warm sensation sheet of the present disclosure, the material of the skin contact sheet is not particularly limited as long as it has liquid retention and liquid permeability, preferably liquid permeability to the warm sensation composition. For example, a nonwoven fabric, a woven fabric, a knitted fabric etc. are mentioned, and a nonwoven fabric is preferable from a viewpoint of a manufacturing method.
Examples of the nonwoven fabric include airlaid pulp, air-through nonwoven fabric, spunbond nonwoven fabric, point bond nonwoven fabric, spunlace nonwoven fabric, needle punch nonwoven fabric, melt blown nonwoven fabric, and combinations thereof (for example, SMS).

Examples of the fibers constituting the nonwoven fabric include natural fibers, synthetic fibers, and semi-synthetic fibers. Examples of the natural fiber include pulp fiber and regenerated cellulose fiber.
Examples of the regenerated cellulose fibers include rayon fibers such as viscose rayon obtained from viscose, polynosic and modal, copper ammonia rayon fiber obtained from a copper ammonia salt solution of cellulose (also referred to as “cupra”); organic compound And lyocell and tencel which are obtained by an organic solvent spinning method using an organic solvent which is a mixed solution of water and does not pass through a cellulose derivative.
Examples of the semi-synthetic fibers include semi-synthetic cellulose fibers such as acetate fibers such as triacetate fibers and diacetate fibers.

Examples of the synthetic fibers include heat-fusible fibers such as polyolefin polymers such as polyethylene or polypropylene; polyester polymers such as terephthalate polymers such as polyethylene terephthalate (PET), polybutylene terephthalate, and polypenty. Examples include fibers formed from terephthalate; polyamide-based polymers such as nylon 6 or nylon 6,6; acrylic polymers; polyacrylonitrile-based polymers; or modified products thereof, or combinations thereof.

The skin contact sheet preferably has a basis weight of 10 to 100 g / m ² , and more preferably 20 to 50 g / m ² .
It is preferable that the skin contact sheet does not have adhesiveness on the skin contact surface, for example, does not have an adhesive.

In the warm sensation sheet of the present disclosure, the material of the clothing contact sheet is not particularly limited as long as it has liquid impermeability, for example, a film such as a film such as polyethylene or polypropylene, or a resin having air permeability. Examples include a non-woven fabric such as a film, spunbond or spunlace joined with a resin film having air permeability, and a multilayer nonwoven fabric such as SMS.
The clothing contact sheet preferably has a basis weight of 10 to 50 g / m ² , and more preferably 15 to 30 g / m ² .

In the warm sensation sheet of the present disclosure, when the warm sensation sheet further includes an intermediate layer as an additional sheet between the skin contact sheet and the clothing contact sheet, the intermediate layer is a sheet or sanitary material field It can be an absorber.
When the said intermediate | middle layer is a sheet | seat, ie, an intermediate | middle sheet, as a raw material of an intermediate | middle sheet, a cloth, for example, a nonwoven fabric, a woven fabric, a knitted fabric etc. are mentioned, for example. The material of the intermediate sheet is preferably a fabric composed of cellulosic fibers, for example, a nonwoven fabric, a woven fabric, a knitted fabric, and the like. From the viewpoint of holding the warming composition, a tissue composed of pulp fibers, More preferred is airlaid pulp or the like. The intermediate sheet preferably does not contain a polymer absorbent.

When the intermediate layer is an absorbent body, the absorbent body includes a core wrap covering an absorbent core containing pulp fibers and a polymeric absorbent, or a core wrap containing an absorbent core containing a polymeric absorbent or The thing etc. which have covered the absorption core which consists of polymer absorbents are mentioned. Examples of the core wrap include the above-described intermediate sheet.
The intermediate layer preferably has a basis weight of 10 to 200 g / m ² , and more preferably 15 to 150 g / m ² .

When the intermediate layer contains a polymer absorbent, the polymer absorbent absorbs the warming agent of the warming composition, the solvent, especially water, and prevents the warming composition from acting on the skin at once. The effect of a warming agent can be exhibited stably for a long time.

In the warm sheet of the present disclosure, the fixing part may be a hot melt adhesive such as styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS), styrene-isoprene-styrene (SIS). Pressure-sensitive adhesives or heat-sensitive adhesives mainly composed of rubbers such as linear olefins such as linear low density polyethylene; water-soluble polymers (eg, polyvinyl alcohol, carboxymethylcellulose, gelatin, etc.) Or the water sensitive adhesives which consist of water swelling polymers (for example, polyvinyl acetate, sodium polyacrylate, etc.) are mentioned.

In the first embodiment, each of the skin contact sheet 7, the intermediate layer 9, the liquid-impermeable clothing contact sheet 11, and the release sheet 15 is in the planar direction (longitudinal direction L and width direction W). Although the shape of the outer edge was the same, in the warming sheet of the present disclosure, each of the skin contact sheet, the intermediate layer, the liquid-impermeable clothing contact sheet, and the release sheet 15 has a different outer edge. You may have a shape.

The warm sheet of the present disclosure is preferably packaged with a packaging sheet. Specifically, the warming sheet of the present disclosure is preferably a package in which one or more warming sheets are packaged with a packaging sheet, and individual packaging in which one warming sheet is packaged with a packaging sheet. More preferably, it is a body.

Examples of the material for the packaging sheet include polyolefin polymers such as polyethylene and polypropylene. From the viewpoint of improving the airtightness of the individual package, the packaging sheet preferably includes an airtight layer. Examples of the material of the airtight layer include ethylene vinyl alcohol copolymer, vinylidene chloride-based polymer, such as vinylidene chloride. Examples include methyl acrylate copolymer, polyvinyl alcohol, nylon, for example, nylon 6, aluminum foil, and a substrate film (polyethylene terephthalate or the like) deposited with alumina, silica, or the like.

The warm sensation sheet of the present disclosure includes a fixing portion for fixing to the clothing on the clothing contact surface of the liquid-impermeable clothing contact sheet, and the fixing portion is used while being fixed to the inner surface of the clothing. It is a fixed clothing type. The clothing is not particularly limited as long as it has a portion that directly contacts the wearer's skin, and includes a clothing that fits the wearer. Examples of the clothes include underwear (for example, shorts, shirts, brassieres, etc.), outerwear (for example, upper clothes, lower clothes), socks, gloves, mufflers, face masks, eye masks, and the like.

The part to which the warming sheet of the present disclosure can impart warmth is not particularly limited. Back, waist, upper arm, forearm, hand), lower limbs (eg, thigh, lower leg, foot), and the like.

Hereinafter, although an example is given and this indication is explained, this indication is not limited to these examples.
[Production Example 1]
Warm sensation sheet No. 1 according to the first embodiment. 1 was produced. Specifically, an air-through nonwoven fabric (basis weight: 30 g / m ² ) as a skin contact sheet, an airlaid pulp (basis weight: 100 g / m ² ) as an intermediate layer, and a clothing contact sheet, A polyethylene film (basis weight: 24 g / m ² ) is bonded with a hot melt adhesive, and then an aqueous solution containing 0.3% by mass of vanillyl butyl ether is used as a warming composition. By coating the entire sheet so that the basis weight of vanillyl butyl ether is 1.0 g / m ² , the warm sheet No. 1 was produced.

[Example 1 and Comparative Example 1]
Warm sensation sheet no. 1 and thermal sheet No. 1 No. 1 was worn by a plurality of test subjects. 1 is a thermal sheet No. 1; There was a reply that it was softer than 1 and excellent in wearing feeling. In addition, warm sheet No. No. 1 got an answer that it was excellent in warmth.

DESCRIPTION OF SYMBOLS 1 Warm sheet 3 Package body 5 Packaging sheet 7 Skin contact sheet 9 Intermediate | middle layer 11 Clothing contact sheet 13 Fixed part 14 Fixed part 15 Release sheet 21 Clothes 23 Outer periphery 25 Peripheral part 31 Skin contact surface 33 Skin non-contact Contact surface 101 Sealing part 103 Notch part L Longitudinal direction W Width direction T Thickness direction F Folding axis

Claims

A temperature-sensitive sheet comprising a liquid retaining and liquid permeable skin contact sheet, a liquid impervious clothing contact sheet, and a fixing portion for fixing to the clothes in that order.
The warm sheet includes a warm composition that includes a warm agent that activates the TRP channel and a solvent, and does not include an exothermic agent.
The warm sensation sheet characterized by the above-mentioned.
The warming sheet according to claim 1, wherein the warming agent is an agonist for the TRPV1 receptor.
The warm feeling sheet according to claim 1 or 2, wherein the skin contact sheet contains the warm feeling composition.
The warming sheet according to any one of claims 1 to 3, wherein the warming composition contains the solvent at a ratio of 50.0 to 99.9% by mass.
The warm sensation sheet according to any one of claims 1 to 4, wherein the air contact sheet has a higher air permeability than the clothes contact sheet.
The thermal sensation sheet according to any one of claims 1 to 5, wherein a thermal conductivity of the skin contact sheet is lower than a thermal conductivity of the clothing contact sheet.
The warm sensation sheet according to any one of claims 1 to 6, further comprising an intermediate layer between the skin contact sheet and the clothing contact sheet.
The warm sensation sheet according to claim 7, wherein the air permeability of the intermediate layer is higher than the air permeability of the clothing contact sheet.
The thermal sheet according to claim 7 or 8, wherein the thermal conductivity of the intermediate layer is lower than the thermal conductivity of the clothing contact sheet.
The warming sheet according to any one of claims 1 to 9, wherein the warming composition and the fixing portion are arranged at positions overlapping in the thickness direction of the warming sheet.
The warm sheet according to any one of claims 1 to 10, wherein the solvent is selected from the group consisting of water, alcohol, fats and oils, and any combination thereof.