JP6635997B2 - Warming articles - Google Patents

Description

  The present disclosure relates to warming articles.

  2. Description of the Related Art A warm sensation article that gives a wearer a feeling of high temperature higher than body temperature or a feeling of low temperature lower than body temperature is known. In particular, in a warm-sensing article that imparts a high-temperature sensation, from the viewpoint of preventing low-temperature burns, it acts on the wearer's skin and raises the temperature of the wearer's skin more than one that contains a heating agent that physically generates heat. It is preferable to include those that act on.

US Pat. No. 5,047,097 discloses an absorbent article, preferably a sanitary article, containing an agent capable of transmitting perception to a wearer without the need to create external conditions perceived by the wearer, with the aim of improving comfort. A disposable absorbent article is described.
Also, in paragraph [0040] of US Pat. No. 6,086,097, preferred agents include warming agents, and the warming agents are capable of receiving a temperature without having to create a change in temperature on the body surface of the wearer of the article. It is described that the container (ie, heat) can be stimulated.

JP 2004-528090 A

The inventor of the present application has found that a warming article containing a warming agent (warming agent) as described in Patent Literature 1 has a low warming effect at the beginning of wearing, and that the wearer has worn after warming. After removing the warming article, it was confirmed that the contact area of the skin which had been in contact with the warming agent for a predetermined time was easily irritated when taking a bath.
Therefore, an object of the present disclosure is to provide a warm sensation article that has a high warming effect at the beginning of wearing and that does not easily stimulate a skin contact site that has been in contact with the warming agent after wearing.

  The present inventors have disclosed a liquid-permeable sheet having a skin-contacting surface and a non-skin-contacting surface and made of fabric, a liquid-impermeable sheet, and the non-skin-contacting surface of the liquid-permeable sheet. And a solution holding sheet composed of a fabric, the TRP having a thickness direction, wherein the warm feeling article is disposed on the liquid permeable sheet and the solution holding sheet. A warming agent for activating a channel, comprising a warming region containing a warming solution containing a solvent, in the warming region, the solution of the warming solution present in the liquid permeable sheet A warm sensation article characterized in that the density is higher than the solution density of the warm sensation providing solution present in the solution holding sheet.

  The warming article of the present disclosure allows the wearer to control the warming effect.

FIG. 1 is a plan view of a sanitary napkin 1 according to the first embodiment. FIG. 2 is an exploded perspective view of the sanitary napkin 1. FIG. FIG. 3 is a cross-sectional view of the sanitary napkin 1 taken along the line III-III in FIG. FIG. 4 is a diagram showing a state of wearing the sanitary napkin 1. FIG. 5 is a diagram for explaining a shorts type sanitary napkin 101 according to the second embodiment. FIG. 6 is a diagram for explaining a disposable diaper 201 according to the third embodiment. FIG. 7 is a perspective view of an individual package body 303 of a warm sheet in which a warm sheet 301 according to the fourth embodiment is individually packaged. FIG. 8 is a perspective view of the warming sheet 301. FIG. 9 is an exploded perspective view of the warming sheet 301. FIG. 10 is a cross-sectional view of the warm-feeling sheet 301 along the line XX in FIG. FIG. 11 is a diagram illustrating a wearing state of the warm sensation sheet 301.

Specifically, the present disclosure relates to the following aspects.
[Aspect 1]
A liquid-permeable sheet having a skin-contacting surface and a non-skin-contacting surface and made of fabric, a liquid-impermeable sheet, and a liquid-permeable sheet adjacent to the non-skin-contacting surface of the liquid-permeable sheet Comprising a solution holding sheet configured, a warming article having a thickness direction,
The warming article comprises a warming imparting region including a warming imparting solution including a warming imparting agent that activates a TRP channel and a solvent disposed on the liquid permeable sheet and the solution holding sheet,
In the warm feeling imparting region, the solution density of the warm feeling imparting solution present in the liquid permeable sheet is higher than the solution density of the warm feeling imparting solution present in the solution holding sheet,
The above-mentioned warm sensation article characterized by the above-mentioned.

The inventor of the present application has found that in a warm sensation article containing a warm sensation imparting agent, the warm sensation effect in the initial stage of wearing is weak due to the properties of the warm sensation imparting agent. In particular, when the solvent of the warming imparting solution is a lipophilic solvent, the warming imparting agent is less likely to penetrate into the wearer's skin, so that the warming effect at the beginning of wearing tends to be weak.
In addition, the inventor of the present application noted that in a warming article in which the warming imparting agent is a high-temperature sensation imparting agent that imparts a high-temperature sensation, the wearer feels itching due to a weak high-temperature sensation effect in a high-temperature sensation sensing period at the beginning of wearing. I found it easy.

Furthermore, the inventor of the present application has a tendency that the wearer easily keeps a warm feeling (high-temperature feeling or low-temperature feeling) for a predetermined period of time even after the wearer wears, that is, removes the warm-sensing article, and the wearer takes a bath. It has been found that at times or the like, irritation is easily remembered at the contact site of the skin that has been in contact with the warming agent.
Furthermore, if the present inventor imparts a strong warm feeling (high temperature feeling or low temperature feeling) in the early stage of wearing, even if a weak warm feeling (high temperature feeling or low temperature feeling) is imparted in the middle and late stages of wearing, the inventor may wear it. It has been found that a person can easily feel an appropriate warm feeling (high temperature feeling or low temperature feeling).

  In the warm sensation article, in the warm sensation imparting region, the solution density of the warm sensation imparting solution present in the liquid permeable sheet is higher than the solution density of the warm sensation imparting solution present in the solution holding sheet. Therefore, in the early stage of wearing, the relatively high-density warming solution present in the liquid-permeable sheet gives the warming article a strong warming feeling to the wearer in the early stage of wearing, and In addition, you can feel moderate warmth. Further, in a warm sensation article in which the warm sensation imparting agent imparts a high temperature sensation, itching hardly occurs at the beginning of wearing.

  In addition, in the middle and late wearing stages, when the amount of the warming solution present in the liquid-permeable sheet is reduced, the relatively low-density warming solution present in the solution holding sheet is applied to the liquid-permeable sheet. It then moves and then gives the wearer a weak feeling of warmth, while the wearer can remember a moderate warmth, while the wearer, after wearing, removes the warmth It is difficult to remember irritation at the contact site of the skin that has been in contact with the imparting agent.

[Aspect 2]
The warm sensation article according to aspect 1, wherein, in the warm sensation imparting region, the fiber density of the cloth constituting the liquid permeable sheet is higher than the fiber density of the cloth constituting the solution holding sheet.

  In the warm sensation article, since the fiber density of the fabric constituting the liquid permeable sheet is higher than the fiber density of the fabric constituting the solution holding sheet, the warm sensation article is subjected to pressure or the like before or during wearing. Thus, even when the warming solution is temporarily moved, the warming solution easily returns to satisfy the predetermined solution density relationship of the warming solution. As a result, it becomes difficult for the wearer to remember itching in the early stage of wearing, and it becomes difficult for the wearer to feel irritation at the contact portion of the skin, which has been in contact with the warming agent after removing the warming article.

[Aspect 3]
The temperature according to aspect 1 or 2, wherein the solvent is a lipophilic solvent, and the degree of lipophilicity of the cloth constituting the liquid permeable sheet is higher than the degree of lipophilicity of the cloth constituting the solution holding sheet. Sensitive goods.

  In the warm sensation article, the solvent is a lipophilic solvent, and the degree of lipophilicity of the cloth constituting the liquid-permeable sheet is higher than the degree of lipophilicity of the cloth constituting the solution holding sheet. However, even if the warming solution is temporarily moved under pressure before or during wearing, the warming solution may satisfy the predetermined solution density relationship of the warming solution. It is easy to return to. As a result, it becomes difficult for the wearer to remember itching in the early stage of wearing, and it is difficult for the wearer to remember irritation at the contact portion of the skin that has been in contact with the warming agent after removing the warming article.

[Aspect 4]
The temperature according to aspect 1 or 2, wherein the solvent is a hydrophilic solvent, and the degree of hydrophilicity of the cloth constituting the liquid permeable sheet is higher than the degree of hydrophilicity of the cloth constituting the solution holding sheet. Sensitive goods.

  In the warm sensation article, the solvent is a hydrophilic solvent, and the degree of hydrophilicity of the cloth constituting the liquid permeable sheet is higher than the degree of hydrophilicity of the cloth constituting the solution holding sheet. However, even if the warming solution is temporarily moved under pressure before or during wearing, the warming solution may satisfy the predetermined solution density relationship of the warming solution. It is easy to return to. As a result, it becomes difficult for the wearer to remember itching in the early stage of wearing, and it is difficult for the wearer to remember irritation at the contact portion of the skin that has been in contact with the warming agent after removing the warming article.

[Aspect 5]
In the range in which the warm sensation article overlaps with the warm sensation imparting area in the thickness direction, the warm sensation imparting area is adjacent to the surface of the solution holding sheet opposite to the liquid permeable sheet and constitutes the warm sensation imparting area. Further comprising an auxiliary solution holding sheet composed of a cloth, wherein in the warmness imparting region, the solution density of the warming imparting solution present in the auxiliary solution holding sheet is the warming imparting present in the solution holding sheet. The warm-sensing article according to aspect 1 or 2, wherein the article is lower than the solution density of the solution.

  In the warm sensation article, in the warm sensation imparting region, the solution density of the warm sensation imparting solution present in the liquid permeable sheet is higher than the solution density of the warm sensation imparting solution present in the solution holding sheet. Therefore, in the early stage of wearing, the relatively high-density warming solution present in the liquid-permeable sheet gives the warming article a strong warming feeling to the wearer in the early stage of wearing, and In addition, you can feel the appropriate warmth. Further, in a warm sensation article in which the warm sensation imparting agent imparts a high temperature sensation, itching hardly occurs at the beginning of wearing.

  In addition, in the middle period of wearing, when the amount of the warming imparting solution present in the liquid permeable sheet decreases, the warming imparting solution having a relatively medium density present in the solution holding sheet moves to the liquid permeable sheet, Then, a moderate warm feeling is given to the wearer, but the wearer can remember a moderate warm feeling, but when the warming article is removed after wearing, the wearer gives the warm feeling. It is difficult to remember irritation at the contact area of the skin that has been in contact with the agent.

Subsequently, when the relatively medium-density warming solution present in the liquid-permeable sheet moves to the wearer's skin and is consumed, the relatively low-density warming feeling present in the auxiliary solution holding sheet is present. The imparting solution is transferred to the liquid-permeable sheet via the solution holding sheet, and in the later stage of wearing, from the liquid-permeable sheet, the relatively low-density warming imparting solution moves to the wearer's skin, A weak warming effect can be imparted to the wearer's skin.
It should be noted that once the wearer's skin feels a warm feeling, the wearer can continue to keep a moderate warm feeling even if a moderate to weak warming effect is given.

  Next, when the wearer finished using the warm-sensing article, removed the warm-sensing article, and took a bath, etc., in the later stage of wearing, because the warming effect was exerted by the relatively low-density warming solution. In addition, it is difficult for the wearer to feel irritation at the contact area of the skin that has been in contact with the warming agent with hot water or the like.

[Aspect 6]
The warm sensation article according to aspect 5, wherein, in the warm sensation imparting region, the fiber density of the cloth constituting the auxiliary solution holding sheet is lower than the fiber density of the cloth constituting the solution holding sheet.

  In the above warming article, the solution density of the warming solution present in the liquid permeable sheet is higher than the solution density of the warming solution present in the solution holding sheet, and the fiber density of the fabric constituting the auxiliary solution holding sheet is higher. However, since it is lower than the fiber density of the fabric constituting the solution holding sheet, even when the warming article is subjected to pressure or the like before or during wearing, and the warming imparting solution temporarily moves. In addition, the warm feeling imparting solution easily returns to satisfy the predetermined solution density relationship of the warm feeling imparting solution. As a result, it becomes difficult for the wearer to remember itching in the early stage of wearing, and it is difficult for the wearer to remember irritation at the contact portion of the skin that has been in contact with the warming agent after removing the warming article.

[Aspect 7]
The solvent is a lipophilic solvent, and the degree of lipophilicity of the cloth constituting the liquid permeable sheet is higher than the degree of lipophilicity of the cloth constituting the solution holding sheet, and constitutes the auxiliary solution holding sheet. The warm-feeling article according to aspect 5 or 6, wherein the degree of lipophilicity of the cloth is lower than the degree of lipophilicity of the cloth constituting the solution holding sheet.

  In the warm sensation article, the solvent constituting the warm sensation providing solution is the lipophilic solvent, and the lipophilicity of the cloth constituting the liquid permeable sheet is higher than the lipophilicity of the cloth constituting the solution holding sheet. Since the degree of lipophilicity of the cloth constituting the auxiliary solution holding sheet is lower than the degree of lipophilicity of the cloth constituting the solution holding sheet, the warm sensation article is subjected to pressure or the like before or during wearing, and Even when the sensation imparting solution temporarily moves, the warming sensation imparting solution easily returns to satisfy the predetermined solution density relationship of the warming sensation imparting solution. As a result, it becomes difficult for the wearer to remember itching in the early stage of wearing, and it is difficult for the wearer to remember irritation at the contact portion of the skin that has been in contact with the warming agent after removing the warming article.

[Aspect 8]
The solvent is a hydrophilic solvent, and the degree of hydrophilicity of the cloth constituting the liquid permeable sheet is higher than the degree of hydrophilicity of the cloth constituting the solution holding sheet, and constitutes the auxiliary solution holding sheet. The warm-feeling article according to aspect 5 or 6, wherein the degree of hydrophilicity of the cloth is lower than the degree of hydrophilicity of the cloth constituting the solution holding sheet.

  In the warm sensation article, the solvent constituting the warm sensation providing solution is a hydrophilic solvent, and the degree of hydrophilicity of the cloth constituting the liquid permeable sheet is higher than the degree of hydrophilicity of the cloth constituting the solution holding sheet. Since the degree of hydrophilicity of the cloth constituting the auxiliary solution holding sheet is lower than the degree of hydrophilicity of the cloth constituting the solution holding sheet, the warm-sensible article is subjected to pressure or the like before or during wearing, and Even when the sensation imparting solution temporarily moves, the warming sensation imparting solution easily returns to satisfy the predetermined solution density relationship of the warming sensation imparting solution. As a result, it becomes difficult for the wearer to remember itching in the early stage of wearing, and it is difficult for the wearer to remember irritation at the contact portion of the skin that has been in contact with the warming agent after removing the warming article.

[Aspect 9]
The thickness retention rate, which is the ratio of the thickness of the liquid permeable sheet under a load of 30 g / cm ² to the thickness under a load of 3 g / cm ² , is greater than the thickness retention rate of the solution retention sheet. The warm sensation article according to any one of aspects 1 to 8, which is small.

  In the warm sensation article, the thickness retention of the liquid-permeable sheet is smaller than the thickness retention of the solution-holding sheet, that is, the liquid-permeable sheet is more easily crushed than the solution-holding sheet. When a body pressure or the like is applied, the thickness of the liquid-permeable sheet tends to be thin, and the warming solution provided by the liquid-permeable sheet easily moves to the wearer's skin.

[Aspect 10]
10. The warm-feeling article according to aspect 9, wherein the liquid-permeable sheet has the thickness retention of 70% or less.

  In the warm sensation article, since the liquid permeable sheet has a predetermined thickness retention rate, the thickness of the liquid permeable sheet tends to be reduced by applying a body pressure or the like to the warm sensation article, The held warmth imparting solution is likely to move to the wearer's skin.

[Aspect 11]
In the thickness direction of the warm sensation article, the thickness of the region overlapping the warm sensation imparting area of the warm sensation article is greater than the thickness of the area not overlapping the warm sensation imparting area of the warm sensation article, The warm sensation article according to any one of aspects 1 to 10.

  In the warm sensation article, the thickness of the area of the warm sensation article that overlaps with the warm sensation providing area is thicker than the thickness of the area that does not overlap with the warm sensation providing area of the warm sensation article. The area of the article that overlaps with the warm feeling imparting area is likely to be pushed in, and hence the warm feeling imparting solution is likely to be released from the warm feeling imparting area.

[Aspect 12]
The warming article according to any one of aspects 1 to 11, wherein the warming agent is a high-temperature sensitizer that is an agonist for the TRPV1 receptor or a low-temperature sensitizer that is an agonist for the TRPM8 receptor.

  In the warm sensation article, since the warm sensation imparting agent is composed of a predetermined high temperature sensation imparting agent or a predetermined low temperature sensation imparting agent, it imparts a strong warm feeling (high temperature sensation, low temperature sensation) to the wearer. Can be.

[Aspect 13]
The warming article according to any one of aspects 1 to 12, wherein the warming article is selected from the group consisting of a sanitary napkin, a panty liner, a disposable diaper, and a shorts-type sanitary napkin.

  Since the warming article is selected from the group consisting of a sanitary napkin, a panty liner, a disposable diaper and a shorts-type sanitary napkin, the warming article can exhibit absorptive performance and provide a warm feeling to the wearer.

[Aspect 14]
The warm-sensing article according to any one of aspects 1 to 13, wherein the warm-sensing article does not contain a heating agent.

  Since the warm sensation article does not include a heating agent, even when the warm sensation article is used for a long time, it is difficult for the wearer to suffer low-temperature burns.

[Definition]
・ "Warm feeling"
In the present specification, the “warm feeling” includes a “high temperature feeling” that senses a temperature higher than the body temperature (36 ° C.) and a “low temperature feeling” feeling a temperature lower than the body temperature (36 ° C.).
・ "Warm sensation imparting agent"
In the present specification, the “warming sensation imparting agent” includes the “high temperature sensation imparting agent” that imparts the above-mentioned high-temperature sensation and the “low temperature sensation imparting agent” that imparts the above-described low-temperature sensation.

・ "Warming solution"
In the present specification, the "warming sensation solution" includes the "high temperature sensation providing solution" containing the above-described high temperature sensitizing agent, and the "low temperature sensation giving solution" containing the above-described low temperature sensitizing agent.
・ "Warm sensation area"
In the present specification, the “warm feeling imparting region” includes the “high temperature feeling imparting region” including the above-described high temperature feeling imparting solution and the “low temperature feeling imparting region” including the above-described low temperature feeling imparting solution.

・ "Heat sensing time"
In the present specification, the term "warmness sensing time" refers to a "high-temperature sensation sensing time" in which a desired high-temperature sensation is remembered by a high-temperature sensation imparting agent and a "low-temperature sensation sensing" in which a desired low-temperature sensation is felt by a low-temperature sensation imparting agent. "Time".

・ "Specific solution density relationship of warming solution"
In the present specification, "the solution density of the warming solution provided in the liquid permeable sheet is higher than the solution density of the warming solution provided in the solution holding sheet in the warming region" Relationship between the predetermined solution density of the sensitizing solution ”.
Further, in the present specification, when the warm sensation article further includes an auxiliary solution holding sheet, the “density of the solution of the warm sensation imparting solution present in the liquid permeable sheet in the warm sensation imparting region is not present in the solution holding sheet. Is higher than the solution density of the warming solution, and the solution density of the warming solution present in the fabric forming the auxiliary solution holding sheet is higher than the solution density of the warming solution present in the fabric forming the solution holding sheet. Lower than "is referred to as" predetermined solution density relationship of the warming solution ".
Note that the predetermined solution density relationship of the warm sensation imparting solution includes a “predetermined solution density relationship of the high temperature sensation imparting solution” for the high temperature sensation imparting agent and the high temperature sensation imparting solution, and “ Relationship of a predetermined solution density of the low-temperature sensation imparting solution ".

Hereinafter, the warm sensation article of the present disclosure will be described in detail.
1 to 4 are diagrams for describing a sanitary napkin 1 as a warming article according to one of the embodiments of the present disclosure (hereinafter, referred to as “first embodiment”). Hereinafter, the “sanitary napkin as a warming article according to the first embodiment” may be simply referred to as a “sanitary napkin according to the first embodiment”. Specifically, FIG. 1 is a plan view of the sanitary napkin 1 according to the first embodiment. FIG. 2 is an exploded perspective view of the sanitary napkin 1 according to the first embodiment. FIG. 3 is a cross-sectional view of the sanitary napkin 1 taken along the line III-III in FIG. FIG. 4 is a diagram showing a state of wearing the sanitary napkin 1.

  The sanitary napkin 1 according to the first embodiment has a longitudinal direction L, a width direction W, and a thickness direction T that are orthogonal to each other, and is provided with an absorbent body 3 and a warmer disposed in front of the absorbent body 3 in the longitudinal direction L. And a sense body 5. The sanitary napkin 1 includes, in the absorbent main body 3, a liquid-permeable sheet 7 that is made of a nonwoven fabric and abuts against the wearer's skin when worn, a liquid-impermeable sheet 9 that abuts clothing 19 when worn, and a liquid-permeable sheet. And an absorber 11 disposed between the permeable sheet 7 and the liquid impermeable sheet 9.

  The sanitary napkin 1 includes, in the warming sensation body 5, a liquid-permeable sheet 7 which is in contact with the wearer's skin when worn and is made of a nonwoven fabric, and a liquid-impermeable sheet 9 which is in contact with clothing 19 when worn. . Further, the sanitary napkin 1 includes a solution holding sheet 13 made of a nonwoven fabric and a shape holding member 15 disposed between the liquid-permeable sheet 7 and the liquid-impermeable sheet 9 in the warming body 5. Prepare. The liquid permeable sheet 7 includes a skin contact surface 8a that contacts the skin of the wearer when worn, and a non-skin contact surface 8b opposite to the skin contact surface 8a. The solution holding sheet 13 is adjacent to the non-skin contact surface 8b of the liquid permeable sheet 7. The shape holding member 15 is disposed closer to the liquid impermeable sheet 9 than the solution holding sheet 13.

In addition, the sanitary napkin 1 includes a high-temperature sensation imparting region 31 in a range of the warm sensation main body 5 overlapping the solution holding sheet 13 in the thickness direction T. In the high-temperature sensation imparting region 31, a high-temperature sensation imparting solution 33 containing a high-temperature sensation imparting agent for activating a TRP channel and a lipophilic solvent is disposed on the liquid permeable sheet 7 and the solution holding sheet 13; In the application region 31, the solution density of the high-temperature sensation providing solution 33 existing in the liquid-permeable sheet 7 is higher than the solution density of the high-temperature sensation providing solution 33 existing in the solution holding sheet 13. The high-temperature sensation imparting region 31 is formed by applying the high-temperature sensation imparting solution 33 to each of the liquid permeable sheet 7 and the solution holding sheet 13.
In the drawing, the relationship between the solution densities of the high temperature sensation imparting solution 33 is represented by the dot density.

  The liquid permeable sheet 7 in the absorbent main body 3 and the liquid permeable sheet 7 in the warm sensation main body 5 are made of a lipophilic nonwoven fabric treated with a first lipophilic agent capable of imparting a predetermined lipophilicity. And an integral sheet made of In addition, the liquid impermeable sheet 9 in the absorption main body 3 and the liquid impermeable sheet 9 in the warm feeling main body 5 are also configured as an integral sheet. Further, the absorber 11 in the absorption main body 3 and the shape retaining member 15 in the warming sensation main body 5 partially overlap each other in the thickness direction T at the overlapping portion 17. The absorber 11 is disposed at a position closer to the liquid permeable sheet 7 than the shape maintaining member 15.

  The sanitary napkin 1 includes an adhesive portion 21 for fixing the sanitary napkin 1 to the clothes 19 of the wearer on both the absorbent main body 3 and the warming main body 5. One surface of the adhesive portion 21 is fixed to the liquid impermeable sheet 9, and the other surface is temporarily fixed to the inner surface of the packaging sheet 29 to which releasability has been imparted.

In the unused state, the sanitary napkin 1 extends with the packaging sheet 29 in the longitudinal direction L, extends in the longitudinal direction L, the first longitudinal folding axis F ₁ and the second longitudinal folding axis F _2, and extends in the width direction W. It is folded with the first folding axis F ₃ , the second width folding axis F _{4 in the} width direction, and the third folding axis F ₅ in the width direction as base axes, and forms an individual package (not shown) of the sanitary napkin 1. The first folding axis F _{3 in} the width direction, the second folding axis F _{4 in} the width direction, and the third folding axis F _{5 in} the width direction are arranged in front, at the center, and behind the sanitary napkin 1, respectively.

The first folding axis F ₃ in the width direction is disposed so as to overlap the solution holding sheet 13 in the thickness direction T when the sanitary napkin 1 and the packaging sheet 29 are deployed. The first longitudinal folding axis F ₁ and the second longitudinal folding axis F ₂ do not overlap with the absorbent body 11 in the thickness direction T in the unfolded state of the sanitary napkin 1 and the packaging sheet 29. They are arranged so as to overlap in the thickness direction T.

The individual package of the sanitary napkin 1 is such that the sanitary napkin 1 and the wrapping sheet 29 are formed with the first longitudinal axis F ₁ and the second longitudinal axis F ₂ as the base axes and the sanitary napkin 1 inside. Folding in the direction W, and then folding in the longitudinal direction L with the sanitary napkin 1 inside, with the first folding axis F _{3 in the} width direction and the third folding axis F ₅ in the width direction as base axes, and then the second folding axis in the width direction It is formed by folding in the longitudinal direction L with the sanitary napkin 1 inside with F ₄ as the base axis.

  In addition, the sanitary napkin 1 includes a pair of flap portions 23, a seal portion 25, an embossed portion 27, and the like for fixing the sanitary napkin 1 to the clothing 19, but is described in the art. Is omitted.

The sanitary napkin 1 wears the absorbent body 3 and the warming body 5 so that the excretion opening contact area (not shown) of the absorber 11 of the absorption main body 3 contacts the excretion opening contact area of the wearer. , The warming main body 5, particularly the solution holding sheet 13, is arranged at a position corresponding to the lower abdomen of the wearer. In other words, the distance between the excretion port contact area (not shown) of the absorber 11 of the absorbent body 3 and the solution holding sheet 13 of the warming body 5 is the distance between the excretion port of the wearer and the lower abdomen ( (Distance on the skin surface).
The absorption main body 3 has the same shape as a normal sanitary napkin.

In the warm sensation body 5, the solution holding sheet 13 is treated with a second lipophilic agent capable of imparting a lower lipophilicity than the first lipophilic agent used in the liquid-permeable sheet 7. It is comprised from the nonwoven fabric which has. That is, in the warm sensation body 5, the lipophilicity of the nonwoven fabric forming the liquid permeable sheet 7 is higher than the lipophilicity of the nonwoven fabric forming the solution holding sheet 13.
Further, as shown in FIG. 3, the fiber density of the nonwoven fabric forming the liquid-permeable sheet 7 is higher than the fiber density of the nonwoven fabric forming the solution holding sheet 13.

  Further, the length of the solution holding sheet 13 in the width direction W is longer than the length of the absorber 11 in the width direction W, and the high-temperature sensation imparting solution 33 is in a region wider in the width direction W than the absorber 11. It is configured to be arranged.

  When the user fixes the sanitary napkin 1 to the clothes 19 and wears the sanitary napkin 1, the high-temperature sensation providing solution 33 contained in the high-temperature sensation providing region 31 (the solution holding sheet 13) comes into contact with the wearer's skin. Then, the TRP channel at the contact site of the wearer's skin with which the high-temperature sensation agent is in contact is efficiently activated, and the lower abdomen of the wearer is efficiently provided with a high-temperature sensation that is higher than the body temperature (36 ° C.). Can be granted.

By giving a high-temperature sensation to the lower abdomen of the wearer, the TRP channel at the contact site of the skin of the lower abdomen of the wearer that has been in contact with the high-temperature sensitizer is activated, and as a result, Heat is generated from the contact portion, and it is expected that the temperature of the contact portion of the wearer's skin will be increased, thereby warming a portion close to the uterus of the wearer and alleviating the menstrual pain of the wearer.
In addition, by warming a part close to the uterus of the wearer, it is expected that premenstrual syndrome, chilliness, menopause, and the like of the wearer are reduced.

  The inventor of the present application has found that, in a warm sensation article containing a high temperature sensation imparting agent, the high temperature sensation sensing time tends to be longer than that of a heating article containing a heating agent (eg, iron powder). In the meantime, it was found that the wearer easily remembers itching. In addition, the inventor of the present application has found that a warm sensation article containing a high-temperature sensation-imparting agent has a condition of a wearer's skin (for example, drying of the wearer's skin) as compared with a heating article containing a heating agent (for example, iron powder). Degrees), there was a difference in how to remember the feeling of high temperature. For example, when the wearer's skin is moistened with moisture, it is easier to maintain a state in which the stratum corneum of the wearer's skin is mainly swollen compared to the case where the wearer's skin is dry, The high-temperature sensation imparting solution 33 can easily reach the TRP channel mainly present in keratinocytes (keratinocytes), so that the high-temperature sensation can be easily remembered (the high-temperature sensation sensing time is short).

  In the sanitary napkin 1 according to the first embodiment, the solution density of the high-temperature sensation solution 33 present in the liquid-permeable sheet 7 in the high-temperature sensation imparting region 31 is equal to the solution density of the high-temperature sensation solution 33 existing in the solution holding sheet 13. Higher than the density.

  Therefore, when the wearer wears the sanitary napkin 1, the relatively high-density high-temperature sensation solution 33 present in the liquid-permeable sheet 7 moves to the wearer's skin in the initial stage of wearing, and the wearer wears the sanitary napkin 1. Since a strong high-temperature sensation effect can be imparted to the skin, the time for sensing the high-temperature sensation can be shortened. Further, as a result of shortening the high-temperature sensing time, the wearer is less likely to feel itching during the high-temperature sensing time.

  Further, in the sanitary napkin 1, when the relatively high-density high-temperature sensation solution 33 present in the liquid-permeable sheet 7 moves to the wearer's skin and is consumed, it is present in the solution holding sheet 13. The relatively low-density high-temperature sensation solution 33 moves to the liquid-permeable sheet 7 and imparts a relatively low-density high-temperature sensation to the wearer's skin from the liquid-permeable sheet 7 in the middle and late stages of wearing. The solution 33 moves and can impart a weak high-temperature sensation to the wearer's skin. However, once the wearer's skin has a high-temperature sensation, even if the weak high-temperature sensation is imparted, the wearer wears the skin. Can continue to feel moderately hot.

  Next, when the wearer finishes wearing the sanitary napkin 1 and takes a bath or the like, since the wearer has been subjected to the warming effect of the relatively low-density high-temperature imparting solution 33 in the latter period of wearing, the wearer It is difficult for the skin to be irritated by hot water or the like at the contact portion of the skin that has been in contact with the high-temperature sensation imparting agent.

  In the sanitary napkin 1, (i) the fiber density of the nonwoven fabric forming the liquid-permeable sheet 7 is higher than the fiber density of the nonwoven fabric forming the solution holding sheet 13, and The constituent solvent is a lipophilic solvent, and the degree of lipophilicity of the nonwoven fabric forming the liquid-permeable sheet 7 is higher than the degree of lipophilicity of the nonwoven fabric forming the solution holding sheet 13.

  Therefore, due to the fiber density difference and the lipophilicity difference between the liquid permeable sheet 7 and the solution holding sheet 13, in the high temperature sensation giving area 31, for example, the high temperature sensation providing solution 33 Even when applied to either one, or when applied to both the liquid permeable sheet 7 and the solution holding sheet 13 in a uniform amount, a predetermined solution density relationship of the high temperature sensation providing solution 33 is easily formed. . In addition, when the sanitary napkin 1 receives vibration, pressure, and the like during transportation and the high-temperature sensation imparting solution 33 temporarily moves, the high-temperature sensation imparting solution temporarily moves due to body pressure and the like when worn. Even in this case, the high-temperature sensation imparting solution 33 easily returns to the original position, and the predetermined relationship of the solution density of the high-temperature sensation imparting solution 33 is easily formed.

  FIG. 5 is a diagram for explaining a shorts-type sanitary napkin 101 as a warming article according to another embodiment of the present disclosure (hereinafter, referred to as “second embodiment”), showing a wearing state. is there. Hereinafter, the “shorts-type sanitary napkin as a warming article according to the second embodiment” may be simply referred to as “shorts-type sanitary napkin according to the second embodiment”.

  The shorts type sanitary napkin 101 according to the second embodiment includes a shorts section 103 and an absorbent article section 105 arranged on the inner surface of the shorts section 103. The absorbent article section 105 includes an absorbent main body 107 and a warm feeling main body 109. The absorbent main body 107 is a liquid-permeable sheet (not shown) which is in contact with the skin of the wearer when worn and is made of a nonwoven fabric, a liquid-impermeable sheet (not shown) which is in contact with the shorts 103, and And an absorber 111 disposed therebetween. The warming sensation body 109 includes a liquid-permeable sheet (not shown) that comes into contact with the wearer's skin when worn, and a liquid-impermeable sheet (not shown) that comes into contact with the shorts 103. The warming sensation body 109 includes a solution holding sheet 113 made of a nonwoven fabric and a shape holding member 115 disposed between a liquid permeable sheet (not shown) and a liquid impermeable sheet (not shown). And The liquid permeable sheet (not shown) has a skin contact surface (not shown) that comes into contact with the wearer's skin when worn, and a non-skin contact surface (not shown) opposite to the skin contact surface. The solution holding sheet 113 is adjacent to a non-skin contact surface (not shown) of the liquid-permeable sheet.

The liquid permeable sheet (not shown) in the absorption main body 107 and the liquid permeable sheet (not shown) in the warm sensation main body 109 are treated with a first lipophilic agent capable of imparting a predetermined lipophilicity. And an integral sheet made of a lipophilic nonwoven fabric. Further, the liquid impermeable sheet (not shown) in the absorption main body 107 and the liquid impermeable sheet (not shown) in the warm feeling main body 109 are also formed as an integral sheet.
Further, the solution holding sheet 113 of the warm sensation body 109 is made of a lipophilic nonwoven fabric treated with the same first lipophilic agent as that used for the liquid permeable sheet (not shown). .

The fiber density of the nonwoven fabric forming the liquid permeable sheet (not shown) is higher than the fiber density of the nonwoven fabric forming the solution holding sheet 113.
Further, as described above, the liquid permeable sheet (not shown) and the solution holding sheet 113 are made lipophilic by the same first lipophilic agent, and the liquid permeable sheet (not shown) And the solution holding sheet 113 have the same lipophilicity.

In addition, the shorts-type sanitary napkin 101 includes a high-temperature sensation imparting region 117 in a range of the warm sensation main body 109 overlapping the solution holding sheet 113 in the thickness direction T. In the high-temperature sensation providing region 117, a high-temperature sensitization solution containing a high-temperature sensitizer for activating a TRP channel and a lipophilic solvent is disposed on a liquid-permeable sheet (not shown) and a solution holding sheet 113. In the high-temperature sensation providing area 117, the solution density of the high-temperature sensation solution (not shown) existing in the liquid permeable sheet (not shown) is changed to the high-temperature sensation solution (not shown) existing in the solution holding sheet 113. Higher than the solution density.
The high-temperature sensation providing region 117 was formed by applying a high-temperature sensation providing solution to each of a liquid permeable sheet (not shown) and the solution holding sheet 113.

  When the wearer wears the shorts-type sanitary napkin 101, the relatively high-density high-temperature-imparting solution present in the liquid-permeable sheet (not shown) at the initial stage of wearing causes a strong high temperature on the wearer's skin. Since a sensation can be imparted, the high-temperature sensation sensing time can be shortened. Further, as a result of shortening the high-temperature sensing time, the wearer is less likely to feel itching during the high-temperature sensing time.

  In the shorts-type sanitary napkin 101, a relatively high-density high-temperature-imparting solution existing in a liquid-permeable sheet (not shown) migrates to the wearer's skin and is consumed. The relatively low-density high-temperature sensation solution present at 113 moves to the liquid-permeable sheet (not shown), and is moved from the liquid-permeable sheet (not shown) to the wearer in the middle and late stages of wearing. The skin is provided with a relatively low-density high-temperature sensation solution, but once the wearer's skin has a high-temperature sensation, even when a relatively low-density high-temperature sensation solution is provided. Therefore, the wearer can keep a moderate high temperature feeling.

  Then, when the wearer finished wearing the shorts-type sanitary napkin 101 and took a bath, etc., the wearer was receiving a warming effect by a relatively low-density high-temperature sensation-imparting solution in the later stage of wearing. However, it is difficult for the hot water or the like to irritate the contact area of the skin that has been in contact with the high-temperature sensation-imparting agent.

In the shorts-type sanitary napkin 101, the fiber density of the nonwoven fabric forming the liquid-permeable sheet (not shown) is higher than the fiber density of the nonwoven fabric forming the solution holding sheet 113.
Therefore, due to the fiber density difference between the liquid permeable sheet (not shown) and the solution holding sheet 113, for example, the high temperature sensation solution is supplied to the liquid permeable sheet (not shown) and the solution holding sheet in the high temperature sensation giving area 117. 113, or even when applied in a uniform amount to both the liquid permeable sheet (not shown) and the solution holding sheet 113, the predetermined solution density of the high temperature sensation providing solution Easy to form relationships. In addition, when the shorts-type sanitary napkin 101 receives vibration, pressure, and the like during transportation, and the high-temperature sensation giving solution temporarily moves, the short-type sanitary napkin 101 receives the body pressure, etc., when worn, and the high-temperature sensation giving solution temporarily moves. Even in this case, the high-temperature sensation imparting solution easily returns to the original position, and the predetermined solution density relationship of the high-temperature sensation imparting solution is easily formed.

  By applying a high-temperature sensation to the lower abdomen of the wearer, the TRP channel at the contact site of the skin of the lower abdomen of the wearer, which was in contact with the high-temperature-imparting agent, was activated. Thus, heat is generated from the contact portion, and it is expected that the temperature of the contact portion of the wearer's skin will be increased, and thus, a portion close to the uterus of the wearer will be warmed and the menstrual pain of the wearer will be alleviated. You. In addition, it is expected that premenstrual syndrome, chilliness, menopause, and the like of the wearer are reduced.

  FIG. 6 is a diagram illustrating a disposable diaper 201 for adults as a warming article according to still another embodiment of the present disclosure (hereinafter, referred to as “third embodiment”), showing a worn state. FIG. Hereinafter, the “disposable diaper as a warming article according to the third embodiment” may be simply referred to as “a disposable diaper according to the third embodiment”.

The disposable diaper 201 according to the third embodiment includes a liquid-permeable sheet 203 that is in contact with the skin of the wearer and made of a nonwoven fabric, a liquid-impermeable sheet 205, a liquid-permeable sheet 203, and a liquid-impermeable sheet 205. And a solution holding sheet 209 made of a nonwoven fabric. The solution holding sheet 209 is disposed forward of the absorber 207 and between the liquid permeable sheet 203 and the liquid impermeable sheet 205. The liquid permeable sheet 203 includes a skin contact surface (not shown) that comes into contact with the wearer's skin when worn, and a non-skin contact surface (not shown) opposite to the skin contact surface. The holding sheet 209 is adjacent to a non-skin contact surface (not shown) of the liquid permeable sheet 203.
The solution holding sheet 209 is arranged so as to be arranged at a position corresponding to the lower abdomen of the wearer when the disposable diaper 201 is worn.

The liquid permeable sheet 203 is made of a lipophilic nonwoven fabric that has been treated with a first lipophilic agent that can impart a predetermined degree of lipophilicity. Further, the solution holding sheet 209 is made of a lipophilic nonwoven fabric treated with a second lipophilic agent capable of imparting a lower lipophilicity than the first lipophilic agent used in the liquid-permeable sheet 203. It is configured.
The liquid permeable sheet 203 and the solution holding sheet 209 are made of the same nonwoven fabric, and have the same fiber density.

Further, the disposable diaper 201 includes a high-temperature sensation imparting region 211 in a range overlapping with the solution holding sheet 209 in the thickness direction T. In the high-temperature sensation providing region 211, a high-temperature sensation solution containing a high-temperature sensitization agent for activating a TRP channel and a lipophilic solvent is disposed on the liquid-permeable sheet 203 and the solution holding sheet 209. In the region 211, the solution density of the high-temperature sensation providing solution (not shown) existing in the liquid-permeable sheet 203 is higher than the solution density of the high-temperature sensation giving solution (not shown) existing in the solution holding sheet 209.
The high-temperature sensation imparting region 211 was formed by applying a high-temperature sensation imparting solution to each of the liquid permeable sheet 203 and the solution holding sheet 209.

  Therefore, when the wearer wears the disposable diaper 201, the relatively high-density high-temperature imparting solution present in the liquid-permeable sheet 203 in the initial stage of wearing imparts a strong high-temperature sensation effect to the wearer's skin. Therefore, it is possible to shorten the time for sensing the feeling of high temperature. Further, as a result of shortening the high-temperature sensing time, the wearer is less likely to feel itching during the high-temperature sensing time.

  Also, in the disposable diaper 201, the relatively high-density high-temperature imparting solution present in the liquid-permeable sheet 203 migrates to the skin of the wearer and, when consumed, is present in the solution holding sheet 209. The low-density high-temperature sensation solution moves to the liquid-permeable sheet 203, and the liquid-permeable sheet 203 provides a relatively low-density high-temperature sensation solution to the wearer's skin in the middle and late stages of wearing. However, once the wearer's skin feels a high-temperature sensation once, even if a relatively low-density high-temperature sensation-imparting solution is provided, the wearer can continue to remember a moderate high-temperature sensation .

  Next, when the wearer finishes wearing the disposable diaper 201 and takes a bath, etc., in the latter half of the wear, the wearer has been subjected to a warming effect by a relatively low-density high-temperature imparting solution. For example, it is difficult to remember irritation at the contact portion of the skin that has been in contact with the high-temperature sensation-imparting agent.

  Further, in the disposable diaper 201, the solvent constituting the high-temperature sensation providing solution is a lipophilic solvent, and the lipophilicity of the nonwoven fabric forming the liquid-permeable sheet 203 is higher than the lipophilicity of the nonwoven fabric forming the solution holding sheet 209. Is also expensive.

  Therefore, for example, a high-temperature sensation providing solution is applied to one of the liquid permeable sheet 203 and the solution holding sheet 209 in the high-temperature sensation providing area 211 due to the difference in lipophilicity between the liquid permeable sheet 203 and the solution holding sheet 209. Even if it is applied, or if it is applied to both the liquid permeable sheet 203 and the solution holding sheet 209 in a uniform amount, it is easy to form a predetermined solution density relationship of the high temperature sensation providing solution. In addition, when the disposable diaper 201 receives vibration, pressure, and the like at the time of transportation and the high-temperature sensation imparting solution temporarily moves, and receives the body pressure and the like during wearing, the high-temperature sensation imparting solution temporarily moves. Even if there is, the high-temperature sensation providing solution easily returns to the original position, and a predetermined solution density relationship of the high-temperature sensation giving solution is easily formed.

  By applying a high-temperature sensation to the lower abdomen of the wearer, the TRP channel at the contact site of the skin of the lower abdomen of the wearer, which was in contact with the high-temperature-imparting agent, was activated. Thus, heat is generated from the contact portion of the high-temperature sensation imparting agent, and is expected to increase the temperature of the contact portion of the wearer's skin.

As a result, when the wearer of the disposable diaper 201 is a woman, (i) discharging prostaglandin, which is a cause of menstrual pain, relaxing muscles such as uterine muscle, and alleviating menstrual pain; ii) It is expected to promote blood circulation, promote the flow of lymph, discharge waste products, improve coldness, burn fat, and (iii) improve immunity.
If the wearer of disposable diaper 201 is a male, (i) excrete prostaglandins, relax muscles and relieve pain, (ii) promote blood circulation, promote lymphatic flow, It is expected to discharge things, improve cooling, burn fat, and (iii) improve immunity.

  7 to 11 are diagrams for explaining a warming sheet 301 as a warming article according to still another embodiment of the present disclosure (hereinafter, referred to as “fourth embodiment”). Note that, hereinafter, the “heat-sensitive sheet as a warm-feeling article according to the fourth embodiment” may be simply referred to as a “heat-sensitive sheet according to the fourth embodiment”. Specifically, FIG. 7 is a perspective view of the individual wrapping body 303 of the thermal sensation sheet in which the thermal sensation sheet 301 according to the fourth embodiment is individually wrapped. FIG. 8 is a perspective view of a warm sheet 301 according to the fourth embodiment. FIG. 9 is an exploded perspective view of a warm sheet 301 according to the fourth embodiment. FIG. 10 is a cross-sectional view of the warm-feeling sheet 301 along the line XX in FIG. FIG. 11 is a diagram illustrating a wearing state of the warm sensation sheet 301 according to the fourth embodiment. Hereinafter, the “individual package of the thermal sensation sheet” may be simply referred to as “individual package”.

  The warm sensation sheet 301 according to the fourth embodiment has a skin contact surface 331, a non-skin contact surface 333, and a liquid permeable sheet 307 made of a nonwoven fabric, and a liquid permeable sheet made of a nonwoven fabric. A solution holding sheet 309 adjacent to the non-skin contact surface 333 of the sheet 307; an auxiliary solution holding sheet 311 made of nonwoven fabric adjacent to the surface of the solution holding sheet 309 opposite to the liquid permeable sheet 307; A liquid-impermeable sheet 313 in contact with the sheet, an adhesive portion 315 fixed to the liquid-impermeable sheet 313 and affixing the liquid impermeable sheet 313 to the clothing 321, and peeling for temporarily fixing the adhesive portion 315. The sheet 317 is provided in that order, and has a longitudinal direction L, a width direction W, and a thickness direction T orthogonal to each other.

  The liquid permeable sheet 307 is made of a nonwoven fabric having a hydrophilic property, which is treated with a first hydrophilic agent capable of imparting a predetermined degree of hydrophilicity, and the solution holding sheet 309 is used for the liquid permeable sheet 307. The auxiliary solution holding sheet 311 was used for the solution holding sheet 309, and was composed of a nonwoven fabric having hydrophilicity, which was treated with a second hydrophilic agent capable of imparting a lower degree of hydrophilicity than the first hydrophilic agent. It is composed of a hydrophilic nonwoven fabric treated with a third hydrophilic agent capable of imparting a lower degree of hydrophilicity than the second hydrophilic agent.

  The fiber density of the nonwoven fabric forming the liquid permeable sheet 307 is higher than the fiber density of the nonwoven fabric forming the solution holding sheet 309, and the fiber density of the nonwoven fabric forming the auxiliary solution holding sheet 311 is higher than that of the solution holding sheet 309. Is lower than the fiber density of the nonwoven fabric.

  The entire surface of the warm sensation sheet 301 constitutes a low-temperature sensation imparting region 341, and the TRP channel is formed on the entire liquid permeable sheet 307, the entire solution holding sheet 309, and the entire auxiliary solution holding sheet 311. A low-temperature sensation imparting solution 343 containing a low-temperature sensitizer that activates and a water as a hydrophilic solvent is disposed.

In the low-temperature sensation giving area 341, the solution density of the low-temperature sensation giving solution 343 present in the liquid-permeable sheet 307 is the highest, the solution density of the low-temperature sensation giving solution 343 present in the solution holding sheet 113 is the next highest, and The solution density of the low-temperature sensation providing solution 343 present on the holding sheet 311 is the lowest.
In the drawing, the relationship between the solution densities of the low-temperature sensation imparting solution 343 is represented by the dot density.

Warming sheet 301, the center of the longitudinal direction L, comprises a Orijiku F ₆ extending parallel to the width direction W. In the individual wrapping body 303, the warm sensation sheet 301 is folded around the folding axis F ₆ with the skin contact surface 331 of the liquid permeable sheet 307 inside, and is wrapped in the wrapping sheet 305.

The adhesive section 315 includes a plurality of adhesive sections 316. Each of the plurality of adhesive portions 316 extends in the width direction W and reaches both end portions of the warm-feeling sheet 301 in the width direction W. The plurality of adhesive portions 316 are arranged at predetermined intervals in the longitudinal direction L.
The release sheet 317 has the same outer edge shape as the liquid impermeable sheet 313, and is arranged so as to cover the entire adhesive portion 315 (the plurality of adhesive portion portions 316).

As shown in FIG. 7, the warm sensation sheet 301 is wrapped in a wrapping sheet 305 in a state of being folded in two, and an individual wrapping body 303 is formed. Specifically, the individual wrapping body 303 is formed by folding the warm sensation sheet 301 folded in two with the skin contact surface 331 of the liquid permeable sheet 307 inside with the folding axis F ₆ as a base axis. And is provided by providing a seal portion 335 on the periphery of the two packaging sheets 305.

  When using the warm sheet 301, the wearer opens the individual package 303 from the cutout 337 of the individual package 303, takes out the warm sheet 301 from the individual package 303, and removes the peel sheet from the warm sheet 301. 317 is peeled off. Next, the wearer fixes the adhesive portion 315 of the warming sheet 301 to the clothing 321, specifically, the inner surface of the shorts, and in a state where the skin contact surface 331 of the warming sheet 301 is in contact with the wearer's skin. , A warm sheet 301 is used.

  When the wearer uses the warm sensation sheet 301, the relatively high-density low-temperature sensation solution 343 existing in the liquid-permeable sheet 307 in the low-temperature sensation providing region 341 moves to the wearer's skin in the initial stage of use. In addition, since a strong low-temperature sensation effect can be imparted to the wearer's skin, the low-temperature sensation sensing time can be shortened.

  Next, when the relatively high-density low-temperature sensation solution 343 existing in the liquid permeable sheet 307 moves to the wearer's skin and is consumed, the relatively medium density The low-temperature sensation imparting solution 343 moves to the liquid permeable sheet 307, and in the middle stage of wearing, the relatively medium density low temperature sensation imparting solution 343 moves to the wearer's skin from the liquid permeable sheet 307, and the wearer's It can impart moderate warmth to the skin.

Next, when the relatively low-density solution 343 present in the liquid-permeable sheet 307 moves to the wearer's skin and is consumed, the relatively low-density solution present in the auxiliary solution holding sheet 311 is removed. Is transferred to the liquid-permeable sheet 307 via the solution-holding sheet 309, and the liquid-permeable sheet 307 gives a relatively low-density low-temperature The sensation imparting solution 343 moves, and can impart a weak warming effect to the wearer's skin.
Note that once the wearer's skin has a low-temperature sensation, the wearer can continue to have an appropriate low-temperature sensation even if a moderate to weak low-temperature sensation is imparted.

  Next, when the wearer finishes using the warming sheet 301, removes the warming sheet 301, and takes a bath, etc., the warming action by the relatively low-density low-temperature feeling imparting solution 343 in the later stage of wearing is performed. Therefore, it is difficult for the wearer to feel irritation to the contact area of the skin that has been in contact with the low-temperature sensation imparting agent with hot water or the like.

In the warming article of the present disclosure, the warming solution includes a warming agent that activates the TRP channel and a solvent.
The warming sensation agent is not particularly limited as long as it activates the TRP channel, and examples thereof include a high-temperature sensitizing agent and a low-temperature sensitizing agent.

  Examples of the high-temperature sensitizer include an agonist for TRPV1 receptor, an agonist for TRPV3 receptor, and the like, and an agonist for TRPV1 is preferable. This is because the TRPV1 receptor has an activation temperature threshold value as high as over 43 ° C., and can give a wearer a strong feeling of high temperature.

  The high-temperature sensation imparting agent is preferably a plant-derived compound from the viewpoint of a sense of security for the wearer. Examples of the high-temperature sensitizer include capsicoside, capsaicin, capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, nonivamide, etc.), capsanthin, benzyl nicotinate, β-butoxyethyl nicotinate, N- Acylwanilamide, vanillyl nonanoate, polyhydric alcohol, pepper powder, pepper tincture, pepper extract, vanillyl ether nonanoate, vanillyl alcohol alkyl ether derivative (for example, vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether , Vanillyl hexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratrial alcohol derivative, substituted benzyl alcohol Derivatives, substituted benzyl alcohol alkyl ethers, vanillin propylene glycol acetal, ethyl vanillin propylene glycol acetal, ginger extract, ginger oil, gingerol, zingerone, hesperidin, and pyrrolidone carboxylic acid, as well as any combination thereof.

  The high-temperature sensation imparting agent is preferably not capsaicin from the viewpoint that it is difficult for the wearer to feel pain, itch and the like, and vanillyl alcohol alkyl ether derivatives (for example, vanillyl ethyl ether, vanillyl butyl ether, vanillyl) More preferred are pentyl ether, vanillyl hexyl ether ginger extract, ginger oil, gingerol, and gingerone, and any combination thereof.

  Examples of the low-temperature sensitizer include those that activate TRP channels, and examples of the low-temperature sensitizer include agonists for the TRPM8 receptor, agonists for the TRPA1 receptor, and agonists for the TRPM8 receptor. Preferably, there is.

  Examples of the low-temperature sensitizer include menthol (for example, l-menthol) and its derivatives (for example, menthyl lactate, menthyl glyceryl ether, for example, 1-menthyl glyceryl ether), methyl salicylate, camphor, and plants (for example, mint) , Eucalyptus).

The solvent is not particularly limited as long as it can contain the warming agent, and examples thereof include a lipophilic solvent and a hydrophilic solvent. The solvent can dissolve or disperse the warming agent, for example.
Examples of the lipophilic solvent include oils and fats, for example, natural oils (for example, fatty acid esters such as triglycerides, coconut oil, linseed oil, and the like), and hydrocarbons (for example, paraffin, for example, liquid paraffin).

  Examples of the hydrophilic solvent include water and alcohol. Examples of the alcohol include lower alcohols such as methanol, ethanol, ethylene glycol, and glycerin, and higher alcohols such as caprylic alcohol, lauryl alcohol, and myristyl alcohol.

  The solvent is preferably an oil or fat (a lipophilic solvent) or an alcohol (a hydrophilic solvent) from the viewpoint of easily controlling the volatility, particularly from the viewpoint of easily lowering the volatility. Further, when the warm sensation article is an absorbent article, the solvent is preferably a lipophilic solvent from the viewpoint of hardly impairing the absorbability.

  The amount of the warming agent contained in the warming solution varies depending on the kind of the warming agent, but in general, the warming solution contains the warming agent preferably in an amount of 0. 0001 to 5.0% by mass, more preferably 0.0005 to 3.0% by mass, still more preferably 0.1 to 1.0% by mass, and even more preferably 0.3 to 0.7% by mass. This is from the viewpoint of the warming effect.

  In addition, when the warm sensation article of the present disclosure is a warm sensation article that imparts a high-temperature sensation, the warmth-imparting solution can include the above-described low-temperature sensation-imparting agent in addition to the above-described high-temperature sensation-imparting agent. . The present inventor, when imparting a high-temperature sensation to the wearer, by including the above-mentioned low-temperature sensation imparting agent in addition to the above-mentioned high-temperature sensation imparting agent, to the warm sensation imparting solution, thereby allowing the wearer to have the above-mentioned warm sensation. It was found that itching was hard to be recognized in the contact area in contact with the warming solution and the surrounding area during the sensing time.

  In the above case, the warm feeling imparting solution preferably contains the low temperature feeling imparting agent in an amount of 0.0001 to 5.0% by mass, more preferably 0.0005 to 3.0% by mass, and still more preferably 0.1 to 3.0% by mass. 1.0% by weight, and even more preferably 0.3-0.7% by weight. This is from the viewpoint of making it difficult for the wearer to feel itching during the time of sensing the high temperature sensation and to hardly feel the excessively low temperature sensation.

  In the case described above, the warming sensation solution comprises the high temperature sensitizing agent and the low temperature sensitizing agent, preferably 20: 1 to 1:10, more preferably 10: 1 to 1: 5, and even more preferably. It is included in a mass ratio of 2: 1 to 1: 1. This is because it is difficult for the wearer to feel itching during the time of sensing the high temperature feeling, and it is difficult for the wearer to feel the feeling of low temperature and to easily feel the feeling of high temperature.

  In the warming article of the present disclosure, the warming imparting solution is, in addition to the warming imparting agent and the solvent, in a range that does not inhibit the warming action on the wearer, as shown below, at least one kind of Other components can be included.

  The at least one other component includes a cooling agent, for example, a cooling agent for lowering the ambient temperature by heat of vaporization, and the cooling agent includes, for example, alcohols, for example, methanol and ethanol.

Examples of the at least one other component include silicone oil, silicone, silicone resin, and the like.
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. Can be

The at least one other component includes, for example, a vitamin such as a natural vitamin or a synthetic vitamin. Examples of the above-mentioned vitamins include water-soluble vitamins, for example, 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 above-mentioned vitamins include fat-soluble vitamins, for example, vitamin A group, vitamin D group, vitamin E group, vitamin K group and the like.
The vitamins also include their derivatives.

  The at least one other component includes, for example, amino acids such as alanine, arginine, lysine, histidine, proline, hydroxyproline and the like, as well as peptides.

The at least one other component includes, for example, zeolites, for example, natural zeolites, for example, zeolites, chabazite, pyroxene, natrolite, stilovite, and somosonite, and synthetic zeolites.
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, for example, skin astringents, anti-acne agents, anti-wrinkle agents, anti-cellulite agents, whitening agents, antibacterial agents, antifungal agents and the like.
Examples of the skin astringent include oil-soluble skin astringents, such as zinc oxide, aluminum sulfate, and tannic acid, and oil-soluble polyphenols. As the oil-soluble polyphenols, natural oil-soluble polyphenols, for example, oak extract, Hypericum perforatum extract, lycopodium extract, chamomile extract, burdock extract, salvia extract, linden extract, medusa, birch extract, horsetail extract, sage extract, salvia extract , Euchegurumi extract, hibiscus extract, loquat leaf extract, bodaille extract, hop extract, maronier extract, yoquinin extract and the like.

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

Examples of the anti-cellulite agent include xanthine compounds such as aminophylline, caffeine, theophylline, and theobromine.
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.

In addition, examples of the at least one other component include an anti-inflammatory component, a pH adjuster, an antibacterial agent, a humectant, a fragrance, a pigment, a dye, a pigment, a plant extract, and the like. Examples of the anti-inflammatory component include, for example, naturally occurring anti-inflammatory agents, such as buttons, ogon, hypericum, chamomile, licorice, sycamore, mugwort, perilla extract and the like, and synthetic anti-inflammatory agents such as allantoin, dipotassium glycyrrhizinate and the like. Can be
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.

  It is preferable that the warm sensation article of the present disclosure, in particular, the warm sensation providing solution does not contain a heating agent. By doing so, the wearer is less likely to burn at low temperatures. In addition, since the heat-sensitive article itself does not generate heat, the adhesive portion for clothing and fixing the heat-sensitive article to the skin is unlikely to soften, and the use of the heat-sensitive article is finished, and the heat-sensitive article is worn, the wearer's skin, etc. The adhesive part of the warm-sensing article is less likely to remain on clothes, skin, and the like when detached from the device.

  The heat generating agent is not particularly limited as long as the heat generating 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 the like. And the like utilizing chemical energy.

In the warm sensation article of the present disclosure, the liquid permeable sheet, the solution holding sheet, and the optional auxiliary solution holding sheet are not particularly limited as long as they are made of a fabric, and are made of, for example, a nonwoven fabric, a woven fabric, or a knit. The fabric is preferably a nonwoven fabric from the viewpoint of ease of manufacturing the warm-sensing article.
Examples of the nonwoven fabric include an air-laid pulp, an air-through nonwoven fabric, a spunbonded nonwoven fabric, a point-bonded nonwoven fabric, a spunlace nonwoven fabric, a needle-punched nonwoven fabric, a meltblown nonwoven fabric, and a combination thereof (for example, SMS or the like).

  Further, the liquid-permeable sheet, the solution holding sheet, and the optional auxiliary solution holding sheet can be a integrally formed fabric, for example, a nonwoven fabric. For example, a web corresponding to the liquid permeable sheet and a web corresponding to the solution holding sheet are laminated, and a known nonwoven fabric forming method, for example, an air-through method can be used to manufacture an integrally formed nonwoven fabric. .

Examples of the fibers constituting the fabric include natural fibers, synthetic fibers, and semi-synthetic fibers. The natural fibers include pulp fibers and regenerated cellulose fibers.
Examples of the regenerated cellulose fibers include rayon fibers, for example, viscose rayon obtained from viscose, polynosic and modal, cuprammonium rayon fibers obtained from a cuprammonium salt solution of cellulose (also referred to as “cupra”); organic compounds And lyocell and Tencel, which are obtained by an organic solvent spinning method using an organic solvent that is a mixed solution of water and water and do not pass through a cellulose derivative.
The semi-synthetic fibers include semi-synthetic cellulose fibers, for example, acetate fibers, for example, triacetate fibers and diacetate fibers.

  Examples of the synthetic fiber include a heat-fusible fiber such as a polyolefin-based polymer such as polyethylene or polypropylene; a polyester-based polymer such as terephthalate-based polymer such as polyethylene terephthalate (PET), polybutylene terephthalate, and polypliers. Fibers formed from lentephthalate; polyamide-based polymers, for example, nylon 6 or nylon 6,6; acrylic polymers; polyacrylonitrile-based polymers; modified products thereof, or combinations thereof.

In the warm sensation article of the present disclosure, the fabrics constituting the liquid permeable sheet and the solution holding sheet, and the optional auxiliary solution holding sheet can have hydrophilicity or lipophilicity. A cloth having hydrophilicity is obtained by treating a cloth or a material (a fiber, a raw material of a fiber, and the like) constituting the cloth with a hydrophilizing agent known in the art (for example, applying a hydrophilizing agent, hydrophilizing the material, or the like). Agent is kneaded). Examples of the above-mentioned hydrophilizing agent include an alkyl phosphate ester salt and an alkyl phosphate metal salt. Examples of the hydrophilizing agent include, for example, a mixture of an alkyl phosphate ester salt having 10 to 30 carbon atoms and a betaine compound having 10 to 30 carbon atoms, a sulfate salt or a sulfonate salt, and a mixture of an alkyl phosphate ester salt and a polyphosphate. Examples thereof include a mixture with an ether-modified silicone.
The degree of hydrophilicity of the fabric can be adjusted by the type, concentration, amount, etc. of the above-mentioned hydrophilizing agent.

As the lipophilic cloth, the cloth itself or a material (fiber, raw material of the fiber, etc.) constituting the cloth is treated with a lipophilic agent known in the art (for example, the lipophilic agent is coated). Or kneading a lipophilic agent). Examples of the lipophilic agent include fatty acid esters (for example, triglycerides) and hydrocarbons (for example, linear hydrocarbons).
The degree of lipophilicity of the fabric can be adjusted by the type, concentration, amount and the like of the lipophilic agent.

  In the warming article of the present disclosure, in the warming imparting region, the solution density of the warming imparting solution present in the liquid-permeable sheet is higher than the solution density of the warming imparting solution present in the solution holding sheet, and preferably 5 to 300% by weight higher, more preferably 10 to 200% by weight higher, and even more preferably 20 to 100% by weight higher. By doing so, a strong warming effect can be imparted in the early stage of wearing, and it becomes difficult to apply a stimulus to the contact site of the wearer's skin which has been in contact with the warming agent after wearing.

In the warm sensation article of the present disclosure, the solution density of the warm sensation providing solution present in the liquid permeable sheet may vary depending on the type of the warm sensation imparting agent and the solvent constituting the warm sensation giving solution. For example, when the solvent constituting the warming imparting solution is a lipophilic solvent, the solution density of the warming imparting solution present in the liquid permeable sheet is preferably 0.002 × 10 ^{−1 to} 0.500 g /. cm ³ , more preferably 0.003 × 10 ^{−1 to} 0.400 g / cm ³ , and most preferably 0.004 × 10 ^{−1 to} 0.300 g / cm ³ . For example, when the solvent constituting the warming imparting solution is a hydrophilic solvent, the solution density of the warming imparting solution present in the liquid permeable sheet is preferably from 0.200 to 0.600 g / cm ^3. , More preferably 0.250 to 0.550 g / cm ³ , and most preferably 0.300 to 0.500 g / cm ³ . By doing so, a strong warming effect can be imparted at the beginning of wearing.

In the present specification, the level of the solution density of the warm feeling imparting solution in the liquid permeable sheet, the solution holding sheet, and the optional auxiliary solution holding sheet is determined by observing the cross section of the above sheet with an optical microscope or the like. can do.
The method for measuring the solution density of the warming solution in the liquid permeable sheet, the solution holding sheet, and the optional auxiliary solution holding sheet will be described later.

In the warm sensation article of the present disclosure, the fiber density of the cloth constituting the liquid-permeable sheet is preferably higher than the fiber density of the cloth constituting the solution holding sheet, and the cloth constituting the liquid-permeable sheet is formed of a solution. than fabric constituting the holding sheet, preferably 0.005 g / cm ³ or more, more preferably 0.010 g / cm ³ or more, more preferably 0.015 g / cm ³ or more, even more preferably 0.020 g / cm ^It has a large fiber density with a difference of ³ or more, even more preferably 0.025 g / cm ³ or more, and even more preferably 0.030 g / cm ³ or more.

Further, the cloth constituting the liquid permeable sheet is preferably 0.440 g / cm ³ or less, more preferably 0.300 g / cm ³ or less, and still more preferably 0.250 g / cm ³ , more than the cloth constituting the solution holding sheet. cm ³ or less, even more preferably 0.200 g / cm ³ or less, even more preferably 0.150 g / cm ³ or less, even more preferably 0.100 g / cm ³ or less, even more preferably 0.060 g / cm ³ Hereafter, it has a large fiber density with a difference of even more preferably 0.045 g / cm ³ or less, still more preferably 0.040 g / cm ³ or less, and even more preferably 0.035 g / cm ³ or less.
The method for measuring the fiber density will be described later.

  By doing so, even when the warm sensation article is subjected to pressure or the like before or during wearing, and the warm sensation imparting solution is temporarily moved, the warm sensation imparting solution is Is easily returned to satisfy the predetermined solution density relationship. As a result, it becomes difficult for the wearer to remember itching in the early stage of wearing, and it is difficult for the wearer to remember irritation at the contact portion of the skin that has been in contact with the warming agent after removing the warming article.

In the warm sensation article of the present disclosure, the solution holding sheet is preferably 0.005 to 0.120 g / cm ³ , more preferably 0.010 to 0.100 g / cm ³ , and still more preferably 0.020 to 0/00 g / cm ³ . It has a fiber density of 0.080 g / cm ³ .

In this specification, the fiber density of the liquid permeable sheet and the solution holding sheet, and the optional auxiliary solution holding sheet, and the solution density of the warm sensation imparting solution in the liquid permeable sheet and the solution holding sheet and the optional auxiliary solution holding sheet Is measured as follows.
(1) Temperature: 20 ± 5 ° C. and humidity: 65 ± 5% RH, FS-60DS manufactured by Daiei Kagaku Seiki Seisakusho [measurement surface: 44 mm (diameter), measurement pressure: 3 g / cm ² ], and a plurality of heat-sensitive sheets are allowed to stand in the same temperature-humidity chamber for 24 hours.

(2) A liquid permeable sheet, a solution holding sheet, and an optional auxiliary solution holding sheet (hereinafter, referred to as “sample”) are separated from each of the plurality of warming sheets, and a 10 cm × 10 cm sheet is separated from each sample. A sample piece of size [area: s (cm ² )] is collected. If a 10 cm × 10 cm sample piece cannot be collected from each sample, a 10 cm × 10 cm size sample piece may be formed from a plurality of samples, or the size of each sample may be adjusted. .

(3) The mass of each sample piece: m ₁ (g) is measured.
(4) Using FS-60DS, five different portions of each sample piece were pressurized, the thickness of each portion after 10 seconds of pressurization was measured, and the average value of the five measured values was used for each sample piece. Thickness: t (cm).
(5) Each sample piece is washed with a washing solvent adjusted to the polarity of the warming solution (for example, toluene when the solvent of the warming solution is a lipophilic solvent, and a hydrophilic solvent is used as the solvent of the warming solution. Wash with ethanol in some cases).
(6) Each sample piece after washing is dried at 70 ° C. for 1 hour, and the mass after drying: m ₂ (g) is measured.

(7) The solution density of the warming solution in each sample piece: sd (g / cm ³ ) is calculated by the following formula:
sd (g / cm ³ ) = (m ₁ −m ₂ ) / s / t
It is calculated by:
(8) In each of the liquid permeable sheet, the solution holding sheet, and the optional auxiliary solution holding sheet, the average value of the solution density: sd ₁ (g / cm ³ ) of a total of 10 sample pieces was calculated, and the average was calculated. The value is adopted as the solution density: SD (g / cm ³ ).
(9) The fiber density of each sample piece: fd (g / cm ³ ) is calculated by the following formula:
fd (g / cm ³ ) = m ₂ / s / t
(10) In each of the liquid permeable sheet, the solution holding sheet, and the optional auxiliary solution holding sheet, an average value of fiber density: fd (g / cm ³ ) of a total of 10 sample pieces was calculated, and the average value was calculated. Is adopted as the fiber density: FD (g / cm ³ ).

In the warm sensation article of the present disclosure, when the solvent constituting the warm sensation providing solution is a lipophilic solvent, the lipophilicity of the cloth constituting the liquid permeable sheet is changed to the lipophilicity of the cloth constituting the solution holding sheet. Preferably, it is higher than the degree.
Further, in the warm sensation article of the present disclosure, when the solvent constituting the warm sensation imparting solution is a hydrophilic solvent, the degree of hydrophilicity of the cloth constituting the liquid permeable sheet is less than that of the cloth constituting the solution holding sheet. It is preferably higher than the degree of hydrophilicity.

By doing so, even when the warm sensation article is subjected to pressure or the like before or during wearing, and the warm sensation imparting solution is temporarily moved, the warm sensation imparting solution is Is easily returned to satisfy the predetermined solution density relationship. As a result, it becomes difficult for the wearer to remember itching in the early stage of wearing, and it is difficult for the wearer to remember irritation at the contact site of the wearer's skin, which has been in contact with the warming agent after removing the warming article.
Further, even if the warm feeling imparting solution is applied to one of the liquid permeable sheet and the solution holding sheet, or even if applied to both the liquid permeable sheet and the solution holding sheet in a uniform amount, It becomes easy to form a predetermined solution density relationship of the warming solution.

In this specification, the degree of lipophilicity and the degree of hydrophilicity of the liquid-permeable sheet, the solution holding sheet, and the optional auxiliary solution holding sheet are evaluated as follows.
(1) Prepare an automatic contact angle meter MCA-J of Kyowa Interface Chemical Co., Ltd. in a constant temperature / humidity chamber with a temperature: 20 ± 5 ° C. and humidity: 65 ± 5% RH. The permeable sheet, the solution holding sheet, and the optional auxiliary solution holding sheet (hereinafter referred to as “sample”) are allowed to stand for 24 hours.
(2) From the ink jet of MCA-J, a minute droplet (20 pL) of deionized water is applied to the surface of the sample to be measured (the surface of the fiber when the sample is a fabric, the surface of the sheet when the sample is a sheet). ), And the state of the minute droplet is recorded over time.
(3) Image analysis is performed on the image immediately after the microdroplets have adhered to the surface of the sample, and the contact angle of the microdroplets to the sample surface is calculated.
(4) As the contact angle, an average value of the measured values of a total of 20 places of 20 different fibers is adopted.
(5) A sample having a large contact angle is a sample having a high lipophilicity (a sample having a low hydrophilicity), and a sample having a small contact angle is a sample having a low lipophilicity (a sample having a high hydrophilicity).

The warm sensation article according to the present disclosure includes a warm sensation providing area and a warm sensation providing area adjacent to the surface opposite to the liquid permeable sheet of the solution holding sheet in a range overlapping in the thickness direction of the warm sensation article. It may further comprise an auxiliary solution holding sheet formed of a fabric.
Further, the solution density of the warming solution provided in the auxiliary solution holding sheet is preferably lower than the solution density of the warming solution provided in the solution holding sheet, and the warming solution provided in the auxiliary solution holding sheet is preferably but than warming solution present in the solution holding sheet, preferably 0.005 g / cm ³ or more, more preferably 0.010 g / cm ³ or more, more preferably 0.015 g / cm ³ or more, even more preferably is 0.020 g / cm ³ or more, even more preferably 0.025 g / cm ³ or more, and even more preferably have a smaller fiber density difference 0.030 g / cm ³ or more.

The warming solution provided in the auxiliary solution holding sheet is preferably 0.440 g / cm ³ or less, more preferably 0.300 g / cm ³ or less than the warming solution present in the solution holding sheet. preferably 0.250 g / cm ³ or less, even more preferably 0.200 g / cm ³ or less, even more preferably 0.150 g / cm ³ or less, even more preferably 0.100 g / cm ³ or less, even more preferably 0.060 g / cm ³ or less, even more preferably 0.045 g / cm ³ or less, even more preferably 0.040 g / cm ³ or less, and even more preferably less fiber density difference 0.035 g / cm ³ or less Having.

  By doing so, the relatively medium-density warming solution present in the liquid-permeable sheet moves to the wearer's skin, and when consumed, the relatively low-density warming solution present in the auxiliary solution holding sheet. The warmth-imparting solution moves to the liquid-permeable sheet via the solution holding sheet, and in the later stage of wearing, from the liquid-permeable sheet, a relatively low-density warmth-imparting solution is applied to the wearer's skin. It can move and impart a weak warming effect to the wearer's skin.

  In addition, when the wearer finished using the warming article, removed the warming article, took a bath, etc., in the later stage of wearing, because of the warming effect of the relatively low-density warming solution. In addition, it is difficult for the wearer to feel irritation at the contact portion of the skin that has been in contact with the warming agent with hot water or the like.

  When the warm sensation article of the present disclosure further includes an auxiliary solution sheet, the fiber density of the fabric forming the auxiliary solution holding sheet is preferably lower than the fiber density of the cloth forming the solution holding sheet. By doing so, even if the warming article is subjected to pressure or the like before or during wearing, and the warming imparting solution temporarily moves, the warming imparting solution is It is easy to return to satisfy a predetermined solution density relationship.

  When the warm sensation article of the present disclosure further includes an auxiliary solution sheet, and when the solvent constituting the warming imparting solution is a lipophilic solvent, the degree of lipophilicity of the fabric constituting the auxiliary solution holding sheet is It is preferable that the degree of lipophilicity is lower than the degree of lipophilicity of the cloth constituting the sheet, and the degree of lipophilicity of the cloth constituting the liquid permeable sheet is higher than the degree of lipophilicity of the cloth constituting the solution holding sheet, and It is more preferable that the degree of lipophilicity of the cloth constituting the sheet is lower than the degree of lipophilicity of the cloth constituting the solution holding sheet. By doing so, even if the warming article is subjected to pressure or the like before or during wearing, and the warming imparting solution temporarily moves, the warming imparting solution is It is easy to return to satisfy a predetermined solution density relationship.

  When the warm sensation article of the present disclosure further includes an auxiliary solution sheet, and the solvent constituting the warming imparting solution is a hydrophilic solvent, the degree of hydrophilicity of the cloth constituting the auxiliary solution holding sheet is higher than that of the solution holding sheet. It is preferable that the degree of hydrophilicity is lower than the degree of hydrophilicity of the cloth constituting the sheet, and the degree of hydrophilicity of the cloth constituting the liquid-permeable sheet is higher than the degree of hydrophilicity of the cloth constituting the solution holding sheet. Is more preferably lower than the degree of hydrophilicity of the cloth constituting the solution holding sheet. By doing so, even when the warming article is subjected to pressure or the like before or during wearing, and the warming imparting solution temporarily moves, the warming imparting solution is It is easy to return to satisfy a predetermined solution density relationship.

In the warm sensation article of the present disclosure, the thickness retention of the liquid permeable sheet is preferably smaller than the thickness retention of the solution retention sheet, more preferably 10 to 90%, further preferably 20 to 85%, And even more preferably 30-70% smaller. By doing so, the liquid-permeable sheet is more easily crushed than the solution-holding sheet, and when a body pressure or the like is applied to the warm sensation article, the thickness of the liquid-permeable sheet is easily reduced, and the liquid-permeable sheet becomes The warm feeling imparting solution held by the sheet easily moves to the wearer's skin.
The above-mentioned thickness retention rate means the ratio of the thickness of the sheet under a load of 30 g / cm ² to the thickness under a load of 3 g / cm ² .

In the warm sensation article of the present disclosure, the liquid-permeable sheet has a thickness under a load of 30 g / cm ² , preferably 70% or less, more preferably 60% or less of a thickness under a load of 3 g / cm ² , And more preferably, it is 50% or less. By doing so, when body pressure or the like is applied to the warm sensation article, the liquid permeable sheet is easily crushed, and the warm sensation imparting solution held by the liquid permeable sheet is easily brought into contact with the wearer's skin.

The warming articles of the present disclosure, the liquid-permeable sheet, the thickness at a load of 10 g / cm ² is the thickness at the time of 3 g / cm ² load, preferably 70% or more, more preferably 80% or more, And more preferably, it is 90% or more. By doing so, the liquid-permeable sheet is less likely to be excessively crushed by the pressure of clothing or the like.

In the present specification, the thickness under a load of 30 g / cm ² , 10 g / cm ² and 3 g / cm ² is measured as follows.
(1) FS-60DS manufactured by Daiei Kagaku Seiki Seisaku-Sho, Ltd. is prepared in a constant temperature and humidity chamber with a temperature of 20 ± 5 ° C. and humidity of 65 ± 5% RH, and a liquid permeable sheet is placed in the constant temperature and humidity chamber. (Hereinafter referred to as "sample") for 24 hours.
(2) The thickness of the sample is measured at 10 points at different locations, and the average value thereof is adopted as the thickness of the sample.
The load is adjusted by changing the contact point. Under the condition of load: 3 g / cm ^2, a probe having a diameter of 44 mm was used. Under the condition of load: 10 g / cm ² , the probe of 25 mm in diameter was used. Under the condition of load: 30 g / cm ² , the diameter was measured. : A 14 mm measuring element is used.

Each of the liquid-permeable sheet and solution holding sheet, preferably 10 to 100 g / m ^2, and more preferably has a basis weight of 20 to 50 g / m ^2. Furthermore, optional auxiliary solution retention sheet is preferably 10~1,000g / m ^2, and more preferably has a basis weight of 20 to 100 g / m ^2.

  In the warm sensation article of the present disclosure, it is preferable that the thickness of the area of the warm sensation article that overlaps with the warm sensation providing area is larger than the thickness of the area that does not overlap with the warm sensation providing area of the warm sensation article. By doing so, it becomes easier for the wearer to push in the area overlapping with the warm feeling imparting area, and thus the warm feeling imparting solution is easily released from the warm feeling imparting area.

In the warm sensation article of the present disclosure, the liquid-permeable sheet is a fiber selected from the group consisting of heat-generating fibers, heat-insulating fibers, and moisture-absorbing fibers, and any combination thereof (hereinafter, simply referred to as “functional fibers”). (Which may be referred to as "a").
When the liquid-permeable sheet contains the above-mentioned predetermined functional fibers, the stratum corneum of the wearer's skin mainly swells easily due to moisture from the wearer's transpiration, sweat, etc. To reach TRP channels mainly present in keratinocytes (keratinocytes). As a result, the warm feeling sensing time is shortened, and when the warm feeling imparting agent is a high temperature feeling imparting agent, the wearer is less likely to feel itching during the high temperature feeling sensing time.

  Examples of the heat-generating fibers include (i) moisture-absorbing heat-generating fibers, (ii) heat storage fibers, and (iii) far-infrared radiation fibers.

Examples of the moisture-absorbing and heat-generating fibers include acrylate fibers and wool. Examples of the heat storage fiber include a fiber containing a substance that absorbs sunlight and converts it into heat energy (such as zirconium carbide), and a fiber containing carbon. Examples of the far-infrared radiation fibers include fibers containing ceramics that emit far-infrared rays when heated.
Examples of the heat-insulating fibers include hollow fibers and feathers.
Examples of the hygroscopic fibers include the above-described natural fibers and semi-synthetic fibers.

  Specifically, in the warm sensation article of the present disclosure, when the liquid-permeable sheet contains moisture-absorbing heat-generating fibers, when moisture such as transpiration from the skin of the wearer and sweat is provided, the moisture-absorbing heat-emitting fibers are provided. Generates heat, and the wearer easily sweats. Then, mainly the stratum corneum of the wearer's skin swells due to the moisture of the sweat of the wearer, and the warming solution is more likely to reach the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the warmth sensing time is shortened, and the wearer is less likely to feel itching during the warmth sensing time.

  In addition, even when the liquid-permeable sheet contains heat storage fibers or far-infrared radiating fibers, the wearer easily sweats, and the moisture of the wearer's sweat mainly swells the stratum corneum of the wearer's skin. In addition, it becomes easier for the warming solution to reach the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the warmth sensing time is shortened, and the wearer is less likely to feel itching during the warmth sensing time.

  In the warming article of the present disclosure, when the liquid-permeable sheet contains heat insulating fibers, the wearer easily sweats, and the moisture of the sweat of the wearer swells mainly the stratum corneum of the wearer's skin. Then, the warming solution can easily reach the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the warm feeling sensing time is shortened, and when the warm feeling imparting agent is a high temperature feeling imparting agent, the wearer is less likely to feel itching during the high temperature feeling sensing time.

  In the warm sensation article of the present disclosure, when the liquid-permeable sheet contains moisture-absorbing fibers, the moisture-absorbing fibers retain moisture such as transpiration of the wearer, sweat, and mainly the stratum corneum of the skin of the wearer. Swelling is facilitated, and the warming solution is easily allowed to reach TRP channels mainly present in keratinocytes (keratinocytes). As a result, the warmth sensing time is shortened, and the wearer is less likely to feel itching during the warmth sensing time.

  In the warm sensation article of the present disclosure, the material of the liquid impermeable sheet is not particularly limited as long as it has liquid impermeability. For example, a film, for example, a moisture permeable film composed of polyethylene, polypropylene, or the like , A non-woven fabric such as a non-permeable film, a spun bond or a spun lace and a non-woven fabric, and a multi-layer non-woven fabric such as an SMS.

In the warm sensation article of the present disclosure, it is preferable that the liquid impermeable sheet is composed of a moisture impermeable film. By doing so, moisture, water vapor, and the like present in the warmth imparting area and the wearer's skin in contact with the warmth imparting area are less likely to pass through the liquid impermeable sheet and be discharged to the outside of the warming article, and to be worn. It is easy to maintain the swelling state mainly of the stratum corneum of the skin of the person, and the warming-imparting solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the warmth sensing time is shortened, and the wearer is less likely to feel itching during the warmth sensing time.
The liquid impermeable sheet is preferably 10 to 50 g / m ^2, and more preferably has a basis weight of 15 to 30 g / m ^2.

  As the above-mentioned absorber, the core wrap covers the absorbent core containing the pulp fiber and the polymer absorbent, and the core wrap covers the absorbent core containing the polymer absorbent or the absorbent core composed of the polymer absorbent. And the like.

The warming article of the present disclosure can include an additional member, for example, an auxiliary sheet or the like, between the liquid-permeable sheet and the liquid-impermeable sheet.
Examples of the material of the auxiliary sheet include those enumerated as the cloth constituting the liquid-permeable sheet.

  The warming article of the present disclosure can be provided with an adhesive portion that fixes the warming article to clothes, the skin of a wearer, or the like, and the adhesive portion is a hot-melt adhesive, for example, styrene-ethylene- Pressure-sensitive type based mainly on rubbers such as butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS) and styrene-isoprene-styrene (SIS), or based on olefins such as linear low-density polyethylene Adhesives or heat-sensitive adhesives; water-soluble polymers (eg, polyvinyl alcohol, carboxymethyl cellulose, gelatin, etc.) or water-swellable polymers (eg, polyvinyl acetate, sodium polyacrylate, etc.); No.

  It is preferable that the warm sensation article of the present disclosure is packaged with a packaging sheet before use. This is from the viewpoint of protecting the warming imparting solution held by the warming article, from the viewpoint of not leaking the warming imparting solution held by the warming article to the outside. For example, the warming article of the present disclosure is preferably a package in which one or a plurality of warming articles is packaged with a packaging sheet, and is an individual package in which one warming article is packaged with a packaging sheet. Is more preferable.

  Examples of the material of the packaging sheet include polyolefin-based polymers, for example, polyethylene and polypropylene. From the viewpoint of enhancing the airtightness of the individual package, the packaging sheet may include an airtight layer, and as a material of the airtight layer, for example, ethylene vinyl alcohol copolymer, vinylidene chloride-based polymer, for example, vinylidene methyl chloride Acrylic copolymers, polyvinyl alcohols, nylons such as nylon 6, aluminum foil, and base films (eg, polyethylene terephthalate) on which alumina, silica, or the like is vapor-deposited.

The warm sensation article of the present disclosure is not particularly limited as long as it contains a warm sensation providing solution, and examples thereof include an absorbent article and a warm sensation sheet.
The absorbent article is not particularly limited and includes an absorbent body, for example, sanitary napkin, shorts-type sanitary napkin, panty liner, disposable diaper, incontinence pad, interlabial pad, tampon, puerperal pad, breast milk pad , A hemorrhoid pad, a sweat-absorbing pad, a pressure ulcer sheet (dressing sheet), a pet diaper, a pet sheet, and the like.

  In the above-described absorbent article, the warmth imparting region containing the warmth imparting solution, in the plane direction of the absorbent article, the absorbent, a position that does not overlap in the thickness direction of the absorbent article, the absorbent, and the absorbent article They may be arranged at positions overlapping in the thickness direction, at positions of any combination thereof, and the like.

  As the warming sheet, for example, a clothing-fixing type warming sheet (for example, an adhesive portion for fixing to a wearer's clothing on a clothing contact surface of a liquid impermeable sheet, For fixing to the wearer's skin on the skin-fixing type warm sensation sheet (for example, on the skin contact surface of the liquid permeable sheet (for example, the periphery of the warm sensation sheet)). Provided with an adhesive portion, wherein the adhesive portion is attached to the wearer's skin for use).

  The clothing to which the clothing-fixing type warm sheet is fixed is not particularly limited, and examples thereof include a clothing having a portion directly in contact with the wearer's skin and preferably fitted to the wearer. Examples of the clothes include underwear (for example, shorts, shirts, brassiere, etc.), outerwear (for example, upperwear, lowerwear), socks, gloves, mufflers, face masks, eye masks, and the like.

  The site to which the warm sensation sheet can provide a warm sensation (high temperature sensation, low temperature sensation) is not particularly limited, and may be, for example, a head (for example, face, for example, eyes), a neck, an upper limb (for example, Abdomen, groin, back, waist, upper arm, forearm, hand, lower limb (for example, thigh, lower leg, foot) and the like.

  In the warm sensation sheet, the warm sensation imparting region containing the warm sensation imparting solution may be arranged in the plane direction of the warm sensation sheet at the entire surface, at the center, at the periphery, at any combination thereof, and the like.

Hereinafter, the present disclosure will be described with examples, but the present disclosure is not limited to these examples.
[Production Example 1]
As the warming article, the sanitary napkin No. 1 according to the first embodiment is used. 1 was produced. The liquid permeable sheet of the absorbent body and the warming body is formed by treating the solution retaining sheet and a portion overlapping in the thickness direction of the sanitary napkin with a first lipophilic agent, and forming a lipophilic air-through nonwoven fabric (constituent fiber). : Heat-fusible fiber, basis weight: 60 g / m ² , fiber density: 0.06 g / cm ³ , other parts were treated with a hydrophilizing agent. The solution was applied in such an amount that the basis weight of the high-temperature sensation imparting agent was 1.0 g / m ² .

The solution holding sheet has an oleophilic air-through, the entire surface of which is treated with a second lipophilic agent capable of imparting a lower lipophilicity than the first lipophilic agent used in the liquid-permeable sheet. Nonwoven fabric (constituent fiber: heat-fusible fiber, basis weight: 30 g / m ² , fiber density: 0.03 g / cm ³ ) Was applied in such an amount as to give a basis weight of 0.5 g / m ² .
The warming sensation solution was composed of vanillyl butyl ether (10.0% by mass) as a high temperature sensitizing agent and isononyl isononanoate as a lipophilic solvent.
The liquid impermeable sheet was a polyethylene film (basis weight: 24 g / m ² ).

[Production Example 2]
Except that the solution holding sheet was treated with the first lipophilic agent, the sanitary napkin no. 2 was produced.
[Production Example 3]
The sanitary napkin No. 1 was manufactured in the same manner as in Production Example 1 except that the air-through nonwoven fabric forming the solution holding sheet was changed to the air-through nonwoven fabric forming the liquid-permeable sheet and treated with the second lipophilic agent. 3 was produced.

[Production Example 4]
As the warming article, the warming sheet No. 4 according to the fourth embodiment is used. 1 was produced. The liquid-permeable sheet is a hydrophilic air-through nonwoven fabric treated with a first hydrophilizing agent (constituting fiber: heat-fusible fiber, basis weight: 60 g / m ² , fiber density: 0.06 g / cm ³ ). In the low-temperature sensation imparting area, the low-temperature sensation imparting solution was applied in such an amount that the basis weight of the low-temperature sensation imparting agent was 1.0 g / m ² .

The solution holding sheet is a hydrophilic air-through nonwoven fabric (component fiber: heat-fused) treated with a second hydrophilizing agent capable of imparting a lower degree of hydrophilization than the first hydrophilizing agent used in the liquid-permeable sheet. Adhesive fiber, basis weight: 60 g / m ² , fiber density: 0.04 g / cm ³ ), and in the low-temperature sensation providing region, the low-temperature sensation providing solution contains 0.5 g / g It was coated in an amount such that m ^2.

The auxiliary solution holding sheet is a hydrophilic air-through nonwoven fabric (component fiber: heat-fused) treated with a third hydrophilicizing agent capable of imparting a lower degree of hydrophilicity than the second hydrophilicizing agent used in the solution holding sheet. Adhesive fiber, basis weight: 30 g / m ² , fiber density: 0.02 g / cm ³ ), and in the low-temperature sensation providing region, the low-temperature sensation providing solution contains 0.25 g / g It was coated in an amount such that m ^2.
The low-temperature sensation giving solution is composed of l-menthyl glyceryl ether (10.0% by mass) as a low-temperature sensitizing agent, a surfactant (1.2% by mass), and water as a hydrophilic solvent. I was
The liquid impermeable sheet was a polyethylene film (basis weight: 24 g / m ² ).

[Production Example 5]
Except for treating the solution holding sheet and the auxiliary solution holding sheet with the first hydrophilizing agent, the same procedure as in Production Example 4 was repeated except that the warm sensation sheet no. 2 was produced.
[Production Example 6]
The air-through nonwoven fabric forming the solution holding sheet and the auxiliary solution holding sheet was changed to the air-through nonwoven fabric forming the liquid-permeable sheet, and the same procedure as in Production Example 4 was carried out except that the hydrophilizing agent was not changed. . 3 was produced.

[Production Example 7]
The sanitary napkin No. 1 was prepared in the same manner as in Production Example 1 except that the air-through nonwoven fabric forming the solution holding sheet was changed to the air-through nonwoven fabric forming the liquid-permeable sheet and treated with the first lipophilic agent. 4 was produced.
[Production Example 8]
Manufacturing except that the air-through nonwoven fabric forming the solution holding sheet and the auxiliary solution holding sheet was changed to the air-through nonwoven fabric forming the liquid-permeable sheet, and the solution holding sheet and the auxiliary solution holding sheet were treated with the first hydrophilizing agent. In the same manner as in Example 4, the warm sensation sheet no. 4 was produced.

[Examples 1 to 6, and Comparative Examples 1 and 2]
A sanitary napkin no. 1 to No. 4, warm feeling sheet No. 1 to No. 4 wearing, warming action in the early stage of wearing (within 10 minutes after wearing) 4 stages (1: did not feel warm feeling, 2: felt weak warm feeling, 3: moderate warm feeling (4: I felt a strong warmth), and evaluated the irritation of the contact area of the skin that was in contact with the warming agent after wearing in four stages (1: irritation was high, 4: low irritation) and sanitary napkin No. 1 to No. In the case of No. 4, it was difficult to itch it in the early stage of wearing (within 10 minutes after wearing), and it was difficult to resist it. , 4: did not recognize itching). Table 1 shows the results (average values have been rounded to integers).

DESCRIPTION OF SYMBOLS 1 Sanitary napkin 3 Absorption main body 5 Warm feeling main body 7 Liquid permeable sheet 8a Skin contact surface 8b Non-skin contact surface 9 Liquid impermeable sheet 11 Absorber 13 Solution holding sheet 15 Shape holding member 17 Overlapping part 19 Clothes 21 Adhesive part 23 Flap part 25 Seal part 27 Embossed part 29 Packaging sheet 31 High-temperature sensation giving area 33 High-temperature sensation giving solution L Longitudinal direction W Width direction T Thickness direction F ₁ Longitudinal first folding axis F ₂ Longitudinal second folding axis F ₃ widthwise first Orijiku F ₄ widthwise second Orijiku F ₅ widthwise third Orijiku F ₆ Orijiku

Claims (13)

A liquid-permeable sheet having a skin-contacting surface and a non-skin-contacting surface and made of a fabric, a liquid-impermeable sheet, and a cloth-adjacent surface of the liquid-permeable sheet adjacent to the non-skin-contacting surface. Comprising a solution holding sheet configured, a warming article having a thickness direction,
With the temperature sensitive article, the liquid disposed on the permeable sheet and the solution holding sheet, a high warming agent that activates TRP channels, the warming region including a warming solution containing a solvent ,
In the warming region, the density of the solution of the warming solution present in the liquid permeable sheet, rather higher than the density of the solution of the warming solution present in the solution holding sheet,
The warming article is selected from the group consisting of sanitary napkins, panty liners, disposable diapers and shorts-type sanitary napkins,
The warm-feeling article, characterized in that: The warm feeling according to claim 1, wherein the solvent is a lipophilic solvent, and the degree of lipophilicity of the cloth constituting the liquid-permeable sheet is higher than the degree of lipophilicity of the cloth constituting the solution holding sheet. Goods. The warm feeling according to claim 1, wherein the solvent is a hydrophilic solvent, and the degree of hydrophilicity of the cloth constituting the liquid permeable sheet is higher than the degree of hydrophilicity of the cloth constituting the solution holding sheet. Goods. The warm sensation article is adjacent to a surface of the solution holding sheet opposite to the liquid permeable sheet and constitutes the warm sensation imparting region in a range overlapping with the warm sensation imparting region in the thickness direction. Further comprising an auxiliary solution holding sheet composed of a cloth, wherein in the warmness applying region, the solution density of the warming application solution present in the auxiliary solution holding sheet is the warming application present in the solution holding sheet. The warming article according to any one of claims 1 to 3, which is lower than the solution density of the solution. 5. The warm sensation article according to claim 4 , wherein, in the warm sensation imparting region, a fiber density of the fabric forming the auxiliary solution holding sheet is lower than a fiber density of the cloth forming the solution holding sheet. The solvent is a lipophilic solvent, and the degree of lipophilicity of the cloth constituting the liquid permeable sheet is higher than the degree of lipophilicity of the cloth constituting the solution holding sheet, and constitutes the auxiliary solution holding sheet. lipophilicity of the fabric is lower than lipophilicity of the fabric constituting the solution holding sheet, warming article according to claim 4 or 5. The liquid permeable sheet has a thickness retention ratio, which is a ratio of a thickness under a load of 30 g / cm ² to a thickness under a load of 3 g / cm ² , than the thickness retention ratio of the solution retention sheet. The warm sensation article according to any one of claims 1 to 6 , which is small. The warm sensation article according to claim 7 , wherein the liquid permeable sheet has the thickness retention of 70% or less. In the thickness direction of the warm sensation article, the thickness of a region overlapping the warm sensation imparting area of the warm sensation article is greater than the thickness of an area not overlapping the warm sensation imparting area of the warm sensation article, The warming article according to any one of claims 1 to 8 . The high warming agent, Ru agonist der against TRPV1 receptor, warming article according to any one of claims 1-9. The warming article according to any one of claims 1 to 10 , wherein the warming article does not contain a heating agent. The warming article has a longitudinal direction and a width direction, and the width direction length of the solution holding sheet is longer than the length direction of the solution holding sheet. The warming article according to one of the preceding claims. The warm sensation article according to any one of claims 1 to 12, wherein the liquid impermeable sheet includes a moisture-impermeable film.

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