JP6715811B2 - Absorbent article - Google Patents

Description

The present disclosure relates to absorbent articles.

BACKGROUND ART Absorbent articles that can give a warmth to a wearer are known.
For example, in US Pat. No. 6,096,898, an absorbent article, preferably an absorbent article, comprising an agent capable of transmitting sensation to the wearer without the need to create external conditions perceived by the wearer, with the aim of improving comfort, Describes a hygienic disposable absorbent article.
In addition, in paragraph [0040] of Patent Document 1, a warming agent is mentioned as a preferable agent, and the warming agent does not need to create a temperature change on the body surface of the wearer of the article, and the temperature receiving agent can be used. It is stated that the container (ie, heat) can be stimulated.

Japanese Patent Publication No. 2004-528090

The inventor of the present application, in an absorbent article including a heating agent as described in Patent Document 1, the heating agent, the absorbent body, an overlapping region overlapping in the thickness direction of the absorbent article, and the absorbent body. When placed over both the non-overlapping region that does not overlap in the thickness direction of the absorbent article, the wearer feels itching especially at the initial stage of wear, as compared with the case where a heat generating agent such as iron powder is used. I found it easy.
Accordingly, the present disclosure provides a thermal sensitizer that activates TRP channels that does not easily itch the wearer, and an overlapping region that overlaps with the absorber in the thickness direction and a non-overlap region that does not overlap with the absorber in the thickness direction. It is an object to provide an absorbent article including and.

The present inventors have a longitudinal direction, a width direction, and a thickness direction, and a liquid permeable sheet, a liquid impermeable sheet, and a pair of side edges extending in the longitudinal direction, which are arranged between them. An absorbent article comprising an absorber having, wherein the absorbent article has an overlapping region overlapping with the absorber in the thickness direction, and a non-overlapping region not overlapping with the absorber in the thickness direction. The absorbent article is partitioned and includes a pair of side edge regions, each of which includes each of the pair of side edge regions, and in each of the pair of side edge regions, (i) the overlapping region. There is an inner temperature-sensing region arranged in the non-overlapping region and an outer temperature-sensing region arranged in the non-overlapping region, and (ii) both the inner temperature-sensing region and the outer temperature-sensing region activate TRP channels. A warming solution containing a warming agent and a solvent, and (iii) the basis weight of the warming solution in the outer warming area is smaller than the basis weight of the warming solution in the inner warming area. The absorbent article characterized by the above was discovered.

The absorbent article according to the present disclosure, which includes the warming agent that activates the TRP channel in the overlapping region that overlaps with the absorber in the thickness direction and the non-overlap region that does not overlap with the absorber in the thickness direction, is a wearer. It is hard to remember itching.

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. 3 is a diagram for explaining the inner temperature sensation regions 19 and 20, the outer temperature sensation regions 21 and 22, and the central temperature sensation region 23 of the sanitary napkin 1. FIG. 4 is a diagram showing a wearing state of the sanitary napkin 1. FIG. 5 is a diagram for explaining the shorts-type sanitary napkin 101 according to the second embodiment. FIG. 6 is a diagram for explaining the disposable diaper 201 according to the third embodiment.

Specifically, the present disclosure relates to the following aspects.
[Aspect 1]
A liquid-permeable sheet having a longitudinal direction, a width direction, and a thickness direction, a liquid-impermeable sheet, and an absorber having a pair of side edges extending in the longitudinal direction, which are arranged between them. An absorbent article,
The absorbent article is divided into an overlapping region overlapping the absorber and the thickness direction, and a non-overlapping region not overlapping the absorber and the thickness direction,
The absorbent article is a pair of side edge regions, each of which includes each of the pair of side edges,
In each of the pair of side edge regions,
(I) There is an inner temperature sensation region arranged in the overlap region and an outer temperature sensation region arranged in the non-overlap region,
(Ii) Both the inner warming region and the outer warming region include a warming solution containing a warming agent that activates a TRP channel and a solvent,
(Iii) The basis weight of the warming solution in the outer warming region is smaller than the basis weight of the warming solution in the inner warming region,
The absorbent article described above.

Absorbent articles containing a drug that imparts a feeling of warmth to the wearer are used, for example, to warm the uterus of the wearer (female) to relieve menstrual pain and to prevent prostatic hypertrophy, prostatitis, prostate cancer, etc. When used to warm the prostate (male) in order to increase the thickness of the drug in the region of overlap (in the absorbent article) with the absorbent, in the thickness direction of the absorbent (in the absorbent article). It is preferable to dispose over both non-overlapping regions that do not overlap. From the viewpoint of preventing low-temperature burns and the like, it is preferable that the drug is not a heat-generating agent but a warming agent that activates the TRP channel of the wearer.

The present inventor, when imparting warmth to a wearer using a warming sensation agent, produces a difference in the warming sensation effect of the warming sensation agent between two adjacent parts of the wearer's skin, and the wearer itches. I found it easy to remember. Further, the inventor of the present application has found that the warming effect of the warming agent varies depending not only on the warming agent side factor but also on the wearer side factor, for example, the moisture content of the wearer's skin. In particular, in the overlapping area where the absorbent article overlaps with the absorbent body, the absorbent body easily absorbs moisture, so that the moisture content of the skin of the wearer in contact with the overlapping area does not easily increase, and the wearer feels relatively warm. Tends to be hard to remember. On the other hand, in the non-overlapping region that does not overlap with the absorbent body of the absorbent article, since the absorption of moisture by the absorber is small, the moisture rate of the skin of the wearer in contact with the non-overlapping region tends to be high, and the wearer relatively They tend to feel warm.

In the absorbent article, in each of the pair of side edge regions, the basis weight of the warming solution in the outer warming region arranged in the overlapping region where it is difficult for the wearer to feel warmth feels warmth to the wearer. Since it is less than the basis weight of the warming solution in the inner warming region arranged in the non-overlapping region that is easy to make, it is difficult for the wearer to remember the difference in the warming action in the inner warming region and the outer warming region, It is difficult for the wearer to itch.
The warming effect of the warming agent activates the TRP channel in the contact area of the wearer's skin that was in contact with the warming agent, and as a result, heat is generated from the contact area via the sympathetic nervous system. , It is expected to raise the temperature of the contact area of the wearer's skin.

[Aspect 2]
The absorbent article according to aspect 1, wherein in each of the pair of side edge regions, the inner temperature-sensing region and the outer temperature-sensing region are adjacent to each other with the pair of side edges sandwiched therebetween. ..
In the absorbent article, in each of the pair of side edge regions, the inner temperature sensation region and the outer temperature sensation region are in contact with each other with the side edge interposed therebetween, so that the inner temperature sensation region and the outer temperature sensation region are It is difficult for the wearer to remember the difference in the warming sensation effect, and it is difficult for the wearer to itch.

[Aspect 3]
The absorbent article according to aspect 1 or 2, wherein in each of the pair of side edge regions, the inner warming region and the outer warming region are arranged on the liquid-permeable sheet.

In the absorbent article, in each of the pair of side edge regions, the inner warming region and the outer warming region are arranged on the liquid-permeable sheet, so that the wearer feels warmth at the initial stage of wearing. Easy to make. Further, in the absorbent article, since the inner warming region is not arranged in the absorber, the absorbability of the absorber is less likely to be hindered by the warming solution.

[Mode 4]
The absorbent article includes a central warming region between the pair of side edge regions, the central warming region includes the warming solution, and the basis weight of the warming solution in the central warming region is The absorbent article according to any one of aspects 1 to 3, wherein the absorbent article has a grammage of more than the basis weight of the warming solution in each of the inner warming areas of the pair of side edge areas.

When the absorbent article is worn, there is a tendency for a lower pressure (pressure, etc.) to be applied to the central portion in the width direction of the absorbent body than the side edge portions in the width direction of the absorbent body.
In the absorbent article, the basis weight of the warming solution in the central warming region where pressure is hard to apply when worn, the basis weight of the warming solution in each of the inner warming regions of the pair of side edge regions where pressure is easily applied when worn More than. Therefore, the wearer can feel a sense of warmth from the absorber to the side edge region thereof, and it is difficult for the wearer to feel the difference in the sense of warmth effect between the central sense of warmth region, the inner sense of warmth region, and the outer sense of warmth region. , It is difficult for the wearer to itch.

[Aspect 5]
The absorbent article according to aspect 4, wherein the central warming region is adjacent to the inner warming regions of the pair of side edge regions, respectively.

In the absorbent article, since the central warming region is adjacent to the inner warming regions of the pair of side edge regions, the wearer has a warming action in the central warming region and the inner warming region. It is difficult for the wearer to remember the difference and itching.

[Aspect 6]
The absorbent article according to aspect 4 or 5, wherein the central warm area is arranged on the liquid-permeable sheet.
In the absorbent article, since the central warming region is arranged on the liquid permeable sheet, the wearer can feel warmth in the early stage of wearing. Further, in the absorbent article, since the central warming region is not arranged in the absorber, the absorbability of the absorber is less likely to be hindered by the warming solution.

[Aspect 7]
7. The absorbent article according to any one of aspects 1 to 6, wherein the warming agent is an agonist for TRPV1 receptor.

In the above absorbent article, since the warming agent is an agonist for the TRPV1 receptor, the wearer can feel a temperature above 43° C., which is the activation temperature threshold value of the TRPV1 receptor, during use. As a result, the absorbent article can make the wearer feel a sufficient warmth.

[Aspect 8]
The absorbent article according to any one of aspects 1 to 7, wherein the solvent is a lipophilic solvent.

As confirmed by the inventors of the present application, when the solvent constituting the warming solution is a lipophilic solvent, the solvent constituting the warming solution is a hydrophilic solvent, for example, as compared with the case of water, It has been found that the time until the temperature is sensed (heat detection time) tends to be long, and it is easy to itch due to the long heat detection time.

Since the absorbent article has the predetermined inner temperature sensation region and the outer temperature sensation region, it is difficult for the wearer to itch during the heat sensing time. Further, since the solvent is a lipophilic solvent, the warming solution in the inner warming region and the outer warming region does not easily move to the absorber, and the warming efficiency of the warming solution that should give warmth to the wearer. Is hard to decrease.

[Aspect 9]
9. The absorbent article according to any one of aspects 1 to 8, wherein the absorbent article is selected from the group consisting of sanitary napkins, shorts-type sanitary napkins, quilted panty liners, and disposable diapers.

The absorbent article is selected from the group consisting of sanitary napkins, shorts-type sanitary napkins, quilted panty liners, and disposable diapers, so that it exhibits absorption performance and suppresses itching while providing a warm feeling to the wearer. Can be granted.

[Aspect 10]
The absorbent article according to any one of aspects 1 to 9, wherein the absorbent article does not include a heat generating agent.
Since the absorbent article does not contain a heat-generating agent, even when the absorbent article is used for a long time, it is difficult for the wearer to get low-temperature burns.

[Definition]
・"Inside" and "outside"
In the present specification, "inside" and "outer side" in the width direction of the absorbent article mean that two parts to be compared are close to and far from the longitudinal axis of the absorbent article, respectively.
For example, with respect to the “inner warming region” and the “outer warming region”, the “inner warming region” is arranged closer to the longitudinal axis of the absorbent article than the “outer warming region” to be compared. The "outside temperature sensation region" is arranged at a position farther from the longitudinal axis of the absorbent article than the "inside temperature sensation region" to be compared.

・"Length" and "width"
In the present specification, the "length in the longitudinal direction of the absorbent article" may be simply referred to as "length", and the "length in the width direction of the absorbent article" may be simply referred to as "width". There is.

The absorbent article of the present disclosure will be described in detail below.
1 to 4 are diagrams for explaining a sanitary napkin 1 as an absorbent article according to one of the embodiments of the present disclosure (hereinafter, referred to as “first embodiment”). Hereinafter, the "sanitary napkin as the absorbent article according to the first embodiment" may be simply referred to as "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 diagram for explaining the inner warming region 19 and the inner warming region 20, the outer warming region 21, the outer warming region 22, and the central warming region 23 of the sanitary napkin 1. FIG. 4 is a diagram showing a wearing state of 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. The sanitary napkin 1 includes a liquid-permeable sheet 3 that comes into contact with the wearer's skin when worn, a liquid-impermeable sheet 5 that comes into contact with clothes 17 when worn, a liquid-permeable sheet 3 and a liquid-impermeable sheet 5. And an absorber 7 arranged between them. The absorber 7 includes a pair of side edges 9 and side edges 10 extending in the longitudinal direction L. In other words, the pair of side edges 9 and 10 are arranged at both ends of the absorber 7 in the width direction W.

The sanitary napkin 1 is divided into an overlapping region 11 that overlaps with the absorber 7 in the thickness direction T and a non-overlapping region 13 that does not overlap with the absorber 7 in the thickness direction T. In addition, the sanitary napkin 1 is a pair of side edge regions 15 and side edge regions 16, each of which includes a pair of side edges 9 and side edges 10 and extends in the width direction W. Prepare Specifically, the side edge region 15 exists across the overlapping region 11 and the non-overlapping region 13 with the side edge 9 interposed therebetween, and the side edge region 16 sandwiches the side edge 10 between them. And exists in the overlap area 11 and the non-overlap area 13.
The liquid-permeable sheet 3 is arranged in both the overlapping area 11 and the non-overlapping area 13.

The sanitary napkin 1 includes an adhesive portion 25 for fixing the sanitary napkin 1 to the wearer's clothing 17. One surface of the adhesive portion 25 is fixed to the liquid impermeable sheet 5, and the other surface is temporarily fixed to the inner surface of the packaging sheet 33 to which peelability is given.

In the unused state, the sanitary napkin 1, together with the packaging sheet 33, extends in the longitudinal direction L, the first longitudinal folding axis F ₁ and the second longitudinal folding axis F _{2 in} the longitudinal direction, and extends in the width direction W. The first folding axis F ₃ and the second width-direction second folding axis F ₄ are folded to form an individual wrapping body (not shown) of the sanitary napkin 1. The first longitudinal folding axis F ₁ and the second longitudinal folding axis F ₂ are arranged at positions overlapping the pair of side edges 9 and 10 of the absorbent body 7 in the thickness direction T, respectively. The width-direction first folding axis F ₃ and the width-direction second folding axis F ₄ are arranged in front of and behind the sanitary napkin 1, respectively.

The individual wrapping body of the sanitary napkin 1 has a width in which the sanitary napkin 1 and the packaging sheet 33 are arranged with the _first longitudinal folding axis F ₁ and the second longitudinal folding axis F ₂ as base axes and the sanitary napkin 1 inside. It is formed by folding in the direction W and then in the longitudinal direction L with the sanitary napkin 1 inside with the first widthwise folding axis F ₃ and the second widthwise folding axis F ₄ as the base axes.

Further, the sanitary napkin 1 includes a pair of flaps 27 for fixing the sanitary napkin 1 to the garment 17, a seal part 29, an embossed part 31, and the like, which are known in the art, and therefore will be described. Is omitted.

The side edge region 15 is arranged inside the widthwise direction W of the side edge 9 and in the overlapping region 11, and in the inside warm feeling region 19 outside the side edge 9 of the width direction W and in the non-overlap region 13. The outside warm feeling region 21 is included. The inner temperature sensation region 19 and the outer temperature sensation region 21 are arranged in the excretory opening contact region (not shown) in the longitudinal direction L.

Both the inner warming region 19 and the outer warming region 21 include a warming solution containing a warming agent that activates a TRP channel and a solvent, and the basis weight of the warming solution in the outer warming region 21 is: It is less than the basis weight of the warming solution in the inner warming region 19. By doing so, it is difficult for the wearer to remember the difference in the warming effect between the inner warming region 19 and the outer warming region 21, and it is difficult for the wearer to feel itching.

Further, the side edge regions 16 are arranged inside the side edge 10 in the width direction W and in the overlapping region 11, and in the width side W outside the side edge 10 in the width direction W and in the non-overlap region 13. And the outer warming region 22 is formed. The inner temperature sensation region 20 and the outer temperature sensation region 22 are arranged in the excretory opening contact region (not shown) in the longitudinal direction L.

Both the inner warming region 20 and the outer warming region 22 include a warming solution containing a warming agent that activates the TRP channel and a solvent, and the basis weight of the warming solution in the outer warming region 22 is: It is smaller than the basis weight of the warming solution in the inner warming region 20. By doing so, it is difficult for the wearer to remember the difference in the temperature sensation effect between the inner temperature sensation region 20 and the outer temperature sensation region 22, and it is difficult for the wearer to itch.

Further, in the side edge region 15, the inner temperature sensation region 19 and the outer temperature sensation region 21 are adjacent to each other with the side edge 9 interposed therebetween. By doing so, it is difficult for the wearer to remember the difference in the warming effect between the inner warming region 19 and the outer warming region 21, and it is difficult for the wearer to feel itching. Further, in the side edge region 16, the inner temperature sensation region 20 and the outer temperature sensation region 22 are adjacent to each other with the side edge 10 interposed therebetween. By doing so, it is difficult for the wearer to remember the difference in the temperature sensation effect between the inner temperature sensation region 20 and the outer temperature sensation region 22, and it is difficult for the wearer to itch.

In the pair of side edge regions 15 and 16, the inner temperature sensitive region 19 and the inner temperature sensitive region 20, the outer temperature sensitive region 21 and the outer temperature sensitive region 22 are liquid permeable composed of a nonwoven fabric. It is arranged on the seat 3. By doing so, the wearer can feel a warm feeling in the initial stage of wearing.

The sanitary napkin 1 according to the first embodiment includes the central warming region 23 between the side edge regions 15 and 16. The central warming region 23 also includes a warming solution containing a warming agent that activates the TRP channel and a solvent, and the basis weight of the warming solution in the central warming region 23 is the inner temperature of the side edge region 15. It is larger than the basis weight of the warming solution in each of the sensitive region 19 and the inner warming region 20 of the side edge region 16. The basis weight of the warming agent in the central warming region 23 where pressure is less likely to be applied when worn is such that the inner warming region 19 of the side edge region 15 and the inner warming region 20 of the side edge region 16 are more likely to receive pressure when worn. If the basis weight of the warming solution in each of the above is greater than the basis weight of the warming solution, the wearer can feel warmth in the excretory opening contact area (not shown) of the sanitary napkin 1 and the entire surrounding area, while It is difficult for the wearer to remember the difference in the warming action between the warming region 19 and the inner warming region 20 and the central warming region 23, and it is difficult for the wearer to itch.

The central warming region 23 is adjacent to both the inner warming region 19 of the side edge region 15 and the inner warming region 20 of the side edge region 16. By doing so, it is difficult for the wearer to remember the difference in the warming action between the central warming region 23 and the inner warming region 19 and the inner warming region 20, and it is difficult for the wearer to feel itching.

In addition, the central warm area 23 is arranged on the liquid-permeable sheet 3 made of a nonwoven fabric. By doing so, the wearer can feel warmth in the initial stage of wearing the sanitary napkin 1.

When the wearer wears the sanitary napkin 1, the central warming region 23, the inner warming region 19 and the inner warming region 20, and the outer warming region 21 and the outer warming region 22 serve as the excretory mouth of the wearer. It is possible to give a warm feeling to the excretory opening of the wearer while making contact with the wearer and making it difficult for the wearer to itch.

FIG. 5: is a figure for demonstrating the shorts type sanitary napkin 101 as an absorbent article according to another embodiment (henceforth a "2nd embodiment") of this indication, and is a figure which shows a wearing state. is there. In the following, the "shorts-type sanitary napkin as the absorbent 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 has a longitudinal direction (not shown), a width direction W, and a thickness direction (not shown), and is arranged on the shorts portion 103 and an inner surface of the shorts portion 103. And the absorbent article section 105. The absorbent article portion 105 is arranged between a liquid-permeable sheet (not shown) that comes into contact with the skin of the wearer when worn, a liquid-impermeable sheet (not shown) that comes into contact with the shorts portion 103, and between them. The absorbent body 107 is provided. The absorbent body 107 includes a pair of side edges 109 and 110 extending in the longitudinal direction (not shown) of the shorts-type sanitary napkin 101. In other words, the pair of side edges 109 and 110 are arranged at both ends of the absorbent body 107 in the width direction W. The shorts-type sanitary napkin 101 also includes an absorbent body 107, an overlapping region 111 that overlaps in the thickness direction of the shorts-type sanitary napkin 101 (not shown), and a thickness direction of the shorts-type sanitary napkin 101 (not shown). No.) and a non-overlapping region 113 that does not overlap.

The shorts type sanitary napkin 101 includes a pair of side edge regions 115 and side edge regions 116, each of which includes one side edge 109 and one side edge 110. In the shorts-type sanitary napkin 101, the pair of side edge regions 115 and 116 are arranged inside the pair of side edges 109 and side edges 110 of the absorbent body 107 in the width direction W and in the overlapping region 111, respectively. The inner warming region 117 and the inner warming region 118, and the outer warming region 119 and the outer warming region 120 arranged in the non-overlapping region 113 outside the pair of side edges 109 and 110 in the width direction W. With.

The inner warming region 117 and the inner warming region 118, and the outer warming region 119 and the outer warming region 120 are arranged on a liquid-permeable sheet (not shown) made of a nonwoven fabric. The inner warming region 117 and the inner warming region 118, and the outer warming region 119 and the outer warming region 120 include a warming solution containing a warming agent that activates the TRP channel and a solvent, The basis weight of the warming solution in the outer warming region 119 is smaller than the basis weight of the warming solution in the inner warming region 117, and the basis weight of the warming solution in the outer warming region 120 is the inner warming region 118. Less than the basis weight of the warming solution in. It should be noted that inner warming region 117 and inner warming region 118, and outer warming region 119 and outer warming region 120 are arranged similarly to those of sanitary napkin 1 according to the first embodiment.
In addition, the shorts-type sanitary napkin 101 according to the second embodiment does not have a central warming region.

Therefore, after wearing the shorts-type sanitary napkin 101, the wearer may feel a difference in warming sensation between the inner warming region 117 and the inner warming region 118 and the outer warming region 119 and the outer warming region 120. It is hard to remember and itchy.

FIG. 6 is a view for explaining an adult disposable diaper 201 as an absorbent article according to yet another embodiment of the present disclosure (hereinafter, referred to as “third embodiment”), and shows a worn state. It is a figure. In addition, below, "the disposable diaper as an absorbent article according to the third embodiment" may be simply referred to as "the disposable diaper according to the third embodiment".

A disposable diaper 201 according to the third embodiment has a longitudinal direction (not shown), a width direction W, and a thickness direction (not shown), and a liquid-permeable sheet 203 that comes into contact with the wearer's skin and a liquid impermeable sheet. The permeable sheet 205 and the absorbent body 207 disposed between the liquid permeable sheet 203 and the liquid impermeable sheet 205 are provided. The absorber 207 includes a pair of side edges 209 and 210 extending in the longitudinal direction (not shown) of the disposable diaper 201. In other words, the pair of side edges 209 and 210 are arranged at both ends of the absorbent body 207 in the width direction W. The disposable diaper 201 also includes the absorbent body 207, an overlapping region 211 that overlaps in the thickness direction (not shown) of the disposable diaper 201, and a non-overlapping region 213 that does not overlap in the thickness direction (not shown) of the disposable diaper 201. It is divided into and.

The disposable diaper 201 includes a pair of side edge regions 215 and side edge regions 216, each of which includes one side edge 209 and one side edge 210. In the disposable diaper 201, the pair of side edge regions 215 and the side edge regions 216 are located inside the overlapping region 211 in the width direction W inside the pair of side edges 209 and side edges 210 of the absorbent body 207, respectively. A sensitive area 217 and an inner warm area 218, and an outer warm area 219 and an outer warm area 220 arranged outside the pair of side edges 209 and 210 in the width direction W and in the non-overlapping area 213 are provided. ..

The inner temperature sensitive area 217 and the inner temperature sensitive area 218, and the outer temperature sensitive area 219 and the outer temperature sensitive area 220 are arranged on the liquid permeable sheet 203 made of a nonwoven fabric. The inner warming region 217 and the inner warming region 218, and the outer warming region 219 and the outer warming region 220 include a warming solution containing a warming agent that activates the TRP channel and a solvent, The basis weight of the warming solution in the outer warming region 219 is smaller than the basis weight of the warming solution in the inner warming region 217, and the basis weight of the warming solution in the outer warming region 220 is the inner warming region 218. Less than the basis weight of the warming solution in. By doing so, it is possible to impart warmth to the lower abdomen of the wearer while making it difficult for the wearer to itch.

In the longitudinal direction (not shown) of the disposable diaper 201, the inner temperature sensation region 217 and the inner temperature sensation region 218, the outer temperature sensation region 219 and the outer temperature sensation region 220, and the central temperature sensation region 231 are the longitudinal direction of the disposable diaper 201. It is arranged in front of and in front of the central portion (not shown) in the direction.

Therefore, the wearer can feel a warm sensation in the lower abdomen by wearing the disposable diaper 201, and can warm the lower part of the abdomen, for example, the prostate for men, and the uterus for women.

When the wearer of the disposable diaper 201 is a woman, (i) discharging prostaglandins, which is a factor of menstrual cramps, relaxing muscles such as uterine muscles, and relieving menstrual cramps, (ii) ) It is expected to promote blood circulation, flow of lymph, discharge waste products, improve coldness, burn fat, and (iii) improve immunity.
When the wearer of the disposable diaper 201 is a male, (i) prostaglandin is excreted, muscles are relaxed and pain is relieved, (ii) blood circulation is promoted, lymph flow is promoted, and deterioration occurs. It is expected to discharge substances, improve coldness, burn fat, and (iii) improve immunity.

In the absorbent article of the present disclosure, the width of each of the pair of side edge regions is not particularly limited as long as it includes each of the pair of side edges of the absorbent body extending in the longitudinal direction of the absorbent article. Each of the pair of side edge regions is preferably 10% or more, more preferably 15% or more, and even more preferably the width of the absorbent body with respect to each of the pair of side edges in the width direction of the absorbent article. It has a width of 20% or more. By doing so, it is difficult for the wearer to itch in the pair of side edge regions of the absorber.

Each of the pair of side edge regions, in the width direction of the absorbent article, is preferably 60% or less, more preferably 50% or less, and even more preferably the width of the absorbent body with each of the pair of side edges as the center. It has a width of 40% or less. From the viewpoint of not impairing the absorbency of the absorbent body, and the viewpoint of the restriction on the design of the absorbent article, specifically, in the width direction of the absorbent article, each of the pair of side edges of the absorbent body is provided with the absorbent article. This is because it is not designed to be excessively separated from each of the pair of side edges extending in the longitudinal direction.

In the absorbent article of the present disclosure, the inner warming region and the outer warming region are respectively arranged in the pair of side edge regions, and the inner warming region is arranged in each of the pair of side edges. It is not particularly limited as long as it is arranged inside (overlapping region) and the outside temperature sensation region is arranged outside each of the pair of side edges (non-overlapping region), and at any position. Can be placed.

In each of the pair of side edge regions and in the width direction of the absorbent article, the inner temperature-sensing region and the outer temperature-sensing region may be separated from each other, but are adjacent to each other with each of the pair of side edges sandwiched therebetween. Preferably. This is because it is difficult for the wearer to remember the difference in the temperature sensation effect between the inner temperature sensation region and the outer temperature sensation region, and it is difficult for the wearer to itch.

In the absorbent article of the present disclosure, the inner temperature-sensing region and the outer temperature-sensing region in each of the pair of side edge regions are aligned in the longitudinal direction of the absorbent article in accordance with the site to which the wearer should feel warmth. Can be placed in position. For example, in the absorbent article of the present disclosure, the inner warming region and the outer warming region in each of the pair of side edge regions are arranged over the entire area of each of the pair of side edges extending in the longitudinal direction of the absorber. And may be located in part.

In addition, when the sensation of warmth should be imparted to the uterus of the wearer, the inner temperature sensation region and the outer temperature sensation region in each of the pair of side edge regions are, for example, an excretory opening contact region (for example, an absorbent article is , Sanitary napkins, shorts-type sanitary napkins, winged panty liners, disposable diapers, etc.) and front bodies (for example, when the absorbent article is a disposable diaper, etc.).
In addition, in the case of imparting a warm feeling to the wearer's prostate, the inner warm feeling area and the outer warm feeling area in each of the pair of side edge areas are, for example, the front body (for example, the absorbent article is a disposable diaper Case).

In the absorbent article of the present disclosure, the inner warming region and the outer warming region in each of the pair of side edge regions both include a warming solution containing a warming agent that activates a TRP channel and a solvent. .. The inner warming region is a region that mainly gives a warmth to the wearer, and the outer warming region is a region that mainly prevents the wearer's itching.

In each of the pair of side edge regions, the basis weight of the warming solution in the outer warming region is less than the basis weight of the warming solution in the inner warming region, and the basis weight of the warming solution in the outer warming region is The amount is preferably 5 to 90% by mass, more preferably 10 to 70% by mass, and still more preferably 20 to 50% by mass with respect to the basis weight of the warming solution in the inner warming region. By doing so, it becomes difficult for the wearer to remember the difference in the warming effect between the inner warming region and the outer warming region, and it becomes difficult for the wearer to feel itching.

In the absorbent article of the present disclosure, the inner warming region in each of the pair of side edge regions contains the warming solution, and the basis weight of the warming agent is preferably 0.001 to 10 g/m ² , and more preferably 0. .003~5g / m ^2, more preferably 0.01~2.5g / m ^2, and even more preferably at a basis weight such that 0.05 to 1.5 g / m ^2. This is from the viewpoint of giving warmth to the wearer.

As used herein, the basis weight of the warming solution in the inner warming region, the outer warming region, and optionally the central warming region is measured as follows.
(1) A plurality of absorbent articles are prepared, and the warming solution in each absorbent article is solidified with liquid nitrogen.
(2) From an absorbent article in which a warming solution is solidified, a sample of each area such as an inner warming area, an outer warming area, and a desired central warming area is cut by a cutter or the like to have a predetermined area in a plane direction. : Cut out using a cutter or the like so as to have S ₁ (m ² ).
Each sample may be cut out so as to include the absorber and the liquid impermeable sheet.
(3) The mass of each sample: m ₁ (g) is measured.
(4) Each sample is washed with a solvent that matches the polarity of the warming solution (for example, toluene when the solvent of the warming solution is a lipophilic solvent, and a solvent of the warming solution is a hydrophilic solvent). Wash with ethanol).

(5) Each sample after washing is dried at 70° C. for 1 hour, and the mass after drying: m ₂ (g) is measured.
(6) The basis weight of the warming solution of each sample: bs (g/m ² ) is calculated by the following formula:
bs(g/m ² )=(m ₂ −m ₁ )/S ₁
Calculate from
(7) Using different absorbent articles, the basis weight of the warming solution of each sample is measured 10 times in total, and the average value thereof is adopted as the basis weight of the warming solution in each region.
In addition, if the basis weight of the warming solution in the inner warming region, the outer warming region, and the desired central warming region is high or low, it can be visually evaluated using an optical microscope or the like.

In the absorbent article of the present disclosure, the inner warming region and the outer warming region in each of the pair of side edge regions may be arranged in any layer in the thickness direction of the absorbent article. For example, the inner temperature sensitive area may be disposed on a liquid permeable sheet, an absorber, an intermediate sheet described later, and the outer temperature sensitive area may be disposed on a liquid permeable sheet, a side sheet, an intermediate sheet described later, or the like. Can be placed.
From the viewpoint of quickly providing a feeling of warmth to the wearer, the inner warmth region and the outer warmth region in each of the pair of side edge regions are layers that contact the wearer, specifically, a liquid-permeable sheet, It is preferably arranged on a side sheet or the like. The warming solution may move slightly due to pressure applied to the absorbent article, vibration, etc., and the inner warming area and/or the outer warming area are arranged (for example, coated) in a single layer. Even if so, it may exist across multiple layers.

The absorbent article of the present disclosure may include a central warming region between the pair of side edge regions. This is from the viewpoint of giving a feeling of warmth to the part of the wearer in contact with the absorber. The central warming region includes a warming solution containing a warming agent and a solvent. The warming solution, warming agent, and solvent are as described in the inner warming region and the outer warming region.

When the absorbent article of the present disclosure includes a central warming region, the central warming region is arranged between the inner warming regions of the pair of side edge regions in the longitudinal direction of the absorbent article. Therefore, in consideration of the warming effect, it may be arranged longer in the longitudinal direction of the absorbent article as compared to the inner warming area, and in consideration of the absorbability, compared to the inner warming area. Thus, they may be arranged short in the longitudinal direction of the absorbent article.

Further, when the absorbent article of the present disclosure includes a central warming region, the central warming region is separated from the inner warming regions of the pair of side edge regions in the width direction of the absorbent article. And may be adjacent, but preferably adjacent. By doing so, it becomes difficult for the wearer to remember the difference in warming effect between the inner warming region and the central warming region, and it becomes difficult for the wearer to feel itching.

The central warm area may be arranged in any layer in the thickness direction of the absorbent article. For example, the central warm area can be arranged on the liquid permeable sheet, the absorber, an intermediate sheet described later, or the like.
From the viewpoint of quickly giving a warmth to the wearer, the central warmth region is preferably arranged in a layer that contacts the wearer, specifically, in the liquid-permeable sheet. The warming sensation solution may move slightly due to pressure, vibration, etc. applied to the absorbent article, and the central warming sensation region may have a plurality of layers even when arranged in a single layer (for example, coating). Can exist across layers of.

The basis weight of the warming solution in the central warming region is, in principle, arbitrary and may be at least equal to or higher than the basis weight of the warming solution in each of the inner warming regions of the pair of side edge regions. ..
The basis weight of the warming solution in the central warming area is preferably larger than the basis weight of the warming solution in each of the inner side warming areas of the pair of side edge areas, and of the warming solution in the central warming area. The basis weight is preferably 105 to 500% by mass, more preferably 110 to 200% by mass, and even more preferably 120 to 100% by mass relative to the basis weight of the warming solution in each of the inner warming regions of the pair of side edge regions. It is in the range of 150% by mass. By doing so, it is possible to make the wearer's skin part in contact with the central warming region feel a warmth, and to make the wearer have a difference in the warming feeling effect between the central warming region and the inner warming region. It is difficult for the wearer to remember, and it is difficult for the wearer to remember itching.

In the absorbent article of the present disclosure, the warming solution includes a warming agent that activates the TRP channel, and a solvent.
The warming agent is not particularly limited as long as it activates the TRP channel, and examples thereof include an agonist for the TRPV1 receptor and an agonist for the TRPV3 receptor, and an agonist for TRPV1 is preferable. This is because the TRPV1 receptor has a high activation temperature threshold of more than 43° C. and can give a wearer a high warm feeling.

The warming agent is preferably a plant-derived compound from the viewpoint of a sense of security for the wearer. Examples of the warming agent include capsicoside, capsaicin, capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, nonivamid, etc.), capsanthin, benzyl nicotinate, β-butoxyethyl nicotinate, N-acyl. Vanilamide, nonyl vanillyl amide, polyhydric alcohol, pepper powder, pepper tincture, pepper extract, vanillyl 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 derivative, substituted benzyl alcohol alkyl ether, vanillin propylene glycol acetal, ethyl vanillin propylene glycol acetal, ginger extract, Ginger oil, gingerol, zingerone, hesperidin, and pyrrolidone carboxylic acid, and any combination thereof.

The warming agent is preferably not capsaicin, from the viewpoint that the wearer does not feel pain, itching, and the like, and a vanillyl alcohol alkyl ether derivative (for example, vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl). More preferred are ethers, vanillyl hexyl ether ginger extract, ginger oil, gingerol, and zingerone, and any combination thereof.

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 fats and oils, for example, natural oils (for example, fatty acid esters such as triglyceride, coconut oil, linseed oil, etc.), hydrocarbons (for example, paraffin, for example liquid paraffin) and the like.
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 capryl alcohol, lauryl alcohol and myristyl alcohol.

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

The warming solution contains the warming agent in an amount of preferably 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, it contains 0.3 to 0.7 mass %. This is from the viewpoint of warming effect.

In the absorbent article of the present disclosure, the warming solution is at least one of the following, in addition to the warming agent and the solvent described above, as long as the effect of imparting warmth to the wearer is not impaired. Other ingredients may be included.

Examples of the at least one other component include a cooling sensation agent. Examples of the cooling sensation agent include those that activate TRP channels, and examples of the cooling sensation agent include agonists to TRPM8 receptor, agonists to TRPA1 receptor, and the like, and agonists to TRPM8 receptor. Is preferred.

Examples of the cooling sensation agent include menthol (for example, 1-menthol) and its derivatives (for example, menthyl lactate, menthyl glyceryl ether, for example, 1-menthyl glyceryl ether), methyl salicylate, camphor, plants (for example, mint, Eucalyptus-derived essential oil and the like can be mentioned.
The present inventor has found that when the warming solution further includes a cooling sensation agent that activates the TRP channel in addition to the warming sensation agent that activates the TRP channel, the wearer warms up during the above-mentioned temperature sensing time. It was found that itching was hard to be felt in the part in contact with the sensitive solution and its peripheral part.

In the absorbent article of the present disclosure, when the warming solution further contains a cooling sensation agent, the warming solution preferably contains the cooling sensation agent in an amount of 0.0001 to 5.0% by mass, more preferably 0.0005. ˜3.0 wt %, more preferably 0.1 to 1.0 wt %, and even more preferably 0.3 to 0.7 wt %. This is because it is difficult for the wearer to itch during the heat detection time and to feel excessive coldness.

In the absorbent article of the present disclosure, when the warming sensation solution further contains a cooling sensation agent, the warming sensation solution preferably contains the warming sensation agent and the cooling sensation agent, more preferably 20:1 to 1:10. In a weight ratio of 10:1 to 1:5, and more preferably 2:1 to 1:1. This is because it is difficult for the wearer to feel itching during the heat detection time, and it is difficult for the wearer to feel a cold sensation and a sensation of warmth.

Examples of the at least one other component include a cooling agent, for example, a cooling agent that lowers an ambient temperature by heat of vaporization, and the cooling agent includes, for example, alcohols such as methanol and ethanol.

Examples of the at least one other component include silicone oil, silicone, and silicone resin.
Examples of the at least one other component include antioxidants such as BHT (2,6-di-t-butyl-p-cresol), BHA (butylated hydroxyanisole), and propyl gallate. To be

Examples of the at least one other component include vitamins such as natural vitamins and synthetic vitamins. Examples of the above-mentioned vitamins include water-soluble vitamins such as vitamin B group such as vitamin B ₁ , vitamin B ₂ , vitamin B ₃ , vitamin B ₅ , vitamin B ₆ , vitamin B ₇ , vitamin B ₉ , vitamin B _12. Etc., such as vitamin C.
Examples of the vitamins include fat-soluble vitamins such as vitamin A group, vitamin D group, vitamin E group, and vitamin K group.
The above vitamins also include their derivatives.

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

Examples of the at least one other component include, for example, zeolites such as natural zeolites such as halite, chabazite, heulandite, natrolite, baffite, 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 such as 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 zinc oxide, aluminum sulfate, tannic acid, and the like, oil-soluble skin astringents, such as (inner warming region, outer warming region, optionally warming region), and oil-soluble polyphenols. To be Examples of the oil-soluble polyphenols include natural oil-soluble polyphenols such as, for example, psyllium extract, Hypericum perforatum extract, Latrodectus communis extract, chamomile extract, burdock extract, salvia extract, linden extract, radix radix extract, birch extract, horsetail extract, sage extract, salvia extract. , Walnut extract, hibiscus extract, loquat leaf extract, bodige extract, hop extract, horse chestnut extract, yoquinin extract and the like.

Examples of the above-mentioned anti-acne agents 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 its derivatives, and mulberry extract and placenta extract.

Examples of the at least one other component include anti-inflammatory components, pH adjusters, antibacterial agents, humectants, fragrances, pigments, dyes, pigments, plant extracts, and the like. Examples of the anti-inflammatory component include naturally-occurring anti-inflammatory agents, for example, button, sardine, Hypericum, chamomile, licorice, peach, hagwort, perilla extract, synthetic anti-inflammatory agents, for example, allantoin, dipotassium glycyrrhizinate, etc. To be
Examples of the pH adjusting agent include those for keeping the skin weakly acidic, such as malic acid, succinic acid, citric acid, tartaric acid, and lactic acid.
Examples of the pigment include titanium oxide.

The absorbent article of the present disclosure, particularly the warming solution, preferably does not contain an exothermic agent. By doing so, the wearer is less likely to get low temperature burns. Further, since the absorbent article itself does not generate heat, the adhesive part for fixing the absorbent article to clothes and skin pads is not easily softened, and after the use of the absorbent article is finished, the absorbent article is dressed, the wearer's skin, etc. The adhesive portion of the absorbent article is unlikely to remain on clothes, skin, etc. when removed from the body.

The exothermic agent is not particularly limited as long as the exothermic agent itself generates heat, and examples thereof include 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 that utilize chemical energy.

In the absorbent article of the present disclosure, the liquid permeable sheet is not particularly limited as long as it has liquid permeability, and is composed of, for example, cloth (for example, non-woven fabric, woven fabric, knitted fabric), perforated film, or the like. .. The above-mentioned cloth is preferably a non-woven fabric from the viewpoint of ease of manufacturing the absorbent article.
Examples of the non-woven fabric include air-laid pulp, air-through non-woven fabric, spun-bonded non-woven fabric, point-bonded non-woven fabric, needle-punched non-woven fabric, melt-blown non-woven fabric, and combinations thereof (for example, SMS).

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

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

Examples of the perforated film include a sheet of polyethylene or polypropylene provided with a plurality of perforated portions.

When imparting on-demand property to the absorbent article of the present disclosure, the liquid-permeable sheet can have hydrophilicity or lipophilicity. The liquid-permeable sheet having hydrophilicity is obtained by treating the material constituting the liquid-permeable sheet with a hydrophilizing agent known in the art (for example, applying a hydrophilizing agent, kneading the hydrophilizing agent). Can be formed by Examples of the hydrophilizing agent include alkyl phosphate ester salts and alkyl phosphate metal salts. Examples of the hydrophilizing agent include 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 sulfuric acid ester salt or a sulfonate salt, an alkyl phosphate ester salt and a poly(alkyl phosphate ester salt). Examples thereof include a mixture with an ether-modified silicone. By adjusting the polarities (lipophilicity and hydrophilicity) between the liquid-permeable sheet and the intermediate sheet, the absorbent article can have the on-demand property.

The inventor of the present application tends to have a longer heat sensing time in an absorbent article containing a warming agent as compared with a heat generating article containing a heat generating agent (for example, iron powder), and during the heat sensing time, In addition to the itching of the wearer being more likely to occur to the wearer, in the absorbent article containing the warming agent, the skin condition of the wearer (for example, in the wearer's skin) is higher than that in the heat-generating article containing the heat generating agent (for example, iron powder). It was found that there is a difference in how to feel the warmth depending on the dryness of the skin, etc.). For example, when the wearer's skin is moist with water, it is easier to maintain the swelled state mainly of the stratum corneum of the wearer's skin, as compared to the case where the wearer's skin is dry, Since the warming solution easily reaches the TRP channel mainly present in keratinocytes, it is easy to feel the warmth (heat sensing time is short).

Therefore, by imparting the on-demand property to the absorbent article of the present disclosure, the portion where the wearer overlaps with the temperature sensitive area (inner temperature sensitive area, outer temperature sensitive area, and optionally the central temperature sensitive area) of the absorbent article. , By pushing in the thickness direction of the absorbent article, the warming solution is released from the warming region, the warming solution that has passed through the liquid permeable sheet, reaches the wearer's skin, than before pushing. The warmth can be given to the wearer, and the wearer can adjust the warmth. It is also possible for the wearer to adjust the itch by pushing the portion of the absorbent article that overlaps with the outer warming region in the thickness direction of the absorbent article.

As the liquid-permeable sheet having lipophilicity, the material constituting the liquid-permeable sheet is treated with a lipophilic agent known in the art (for example, a lipophilic agent is applied, a lipophilic agent is applied). Is kneaded). Examples of the lipophilic agent include fatty acid esters (for example, triglyceride) and hydrocarbons (for example, linear hydrocarbon).

When the liquid permeable sheet of the absorbent article of the present disclosure is a cloth, and when the on-demand property is imparted to the absorbent article of the present disclosure, the liquid permeable sheet is preferably 0.005 to 0.060 g/ It has a fiber density of cm ³ , more preferably 0.010 to 0.050 g/cm ³ , and even more preferably 0.020 to 0.040 g/cm ³ . By adjusting the fiber density between the liquid-permeable sheet and the intermediate sheet, the absorbent article can have an on-demand property.
The method for measuring the fiber density will be described later.

When the liquid permeable sheet of the absorbent article of the present disclosure is a cloth and the absorbent article of the present disclosure is provided with on-demand properties, the liquid permeable sheet has a thickness under a load of 30 g/cm ^2. It is preferably 70% or less, more preferably 60% or less, and still more preferably 50% or less of the thickness under a load of 3 g/cm ² . By doing so, when the wearer pushes the absorbent article in its thickness direction, the liquid-permeable sheet is easily crushed, and the warming solution held by the liquid-permeable sheet is brought into contact with the wearer's skin. This facilitates the on-demand property of the absorbent article.

When the liquid-permeable sheet of the absorbent article of the present disclosure is a cloth and the absorbent article of the present disclosure is provided with on-demand property, the liquid-permeable sheet has a thickness under a load of 10 g/cm ^2. It is preferably 70% or more, more preferably 80% or more, and even more preferably 90% or more of the thickness under a load of 3 g/cm ² . By doing so, the liquid permeable sheet is less likely to be crushed by the pressure applied to clothes, and the pressure applied makes it difficult to bring the warming solution held by the liquid permeable sheet into contact with the skin of the wearer, and thus the absorbent article. The on-demand property can be improved easily.

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) Prepare a FS-60DS manufactured by Daiei Kagaku Seiki Seisakusho Co., Ltd. in a constant temperature and humidity chamber of temperature: 20±5° C. and humidity: 65±5% RH, and in the constant temperature and constant humidity chamber, a liquid permeable sheet. (Hereinafter, referred to as "sample") is allowed to stand for 24 hours.
(2) The thickness of the sample is measured at 10 points in different places, and the average value thereof is adopted as the thickness of the sample.
The load is adjusted by changing the probe. Under the condition of load: 3 g/cm ^2, a probe with a diameter of 44 mm is used, under the condition of load: 10 g/cm ² , the probe with a diameter of 25 mm is used, and under the condition of load: 30 g/cm ² , the diameter is: : Use a 14 mm stylus.

The liquid permeable sheet preferably has a basis weight of 10 to 100 g/m ² , and more preferably 20 to 50 g/m ² .

In the absorbent article of the present disclosure, the liquid-permeable sheet is a material selected from the group consisting of a heat-generating material, a heat-insulating material, a hygroscopic material, and any combination thereof (hereinafter, simply referred to as “functional material”). May be referred to).
When the liquid-permeable sheet contains the above-mentioned predetermined functional material, the wearer's transpiration, moisture due to perspiration, etc., the horny layer of the wearer's skin, mainly the stratum corneum, easily swells with the water, and the warming solution, It becomes easy to reach the TRP channel mainly present in keratinocytes. As a result, the heat sensing time is shortened, and the wearer is less likely to itch during the heat sensing time.

Examples of the heat generating material include (i) moisture absorbing heat generating material (moisture absorbing heat generating fiber, moisture absorbing heat generating sheet, etc.), (ii) heat storage material (heat storage fiber, heat storage sheet, etc.), (iii) far infrared radiation material (far Infrared radiation fiber, far infrared radiation sheet, etc.) can be mentioned.

Examples of the hygroscopic and exothermic material include acrylate materials and wool. Examples of the heat storage material include a material containing a substance that absorbs sunlight and converts it into heat energy (zirconium carbide, etc.), a carbon material, and the like. Examples of the far-infrared radiation material include a material containing ceramics that emits far-infrared radiation when heated.
Examples of the heat insulating material include hollow fibers and feathers.
Examples of the hygroscopic material include the above-mentioned natural fibers and semi-synthetic fibers.

Specifically, in the absorbent article of the present disclosure, when the liquid-permeable sheet contains a hygroscopic and exothermic material, for example, a hygroscopic and exothermic fiber, evaporation from the skin of the wearer, moisture such as sweat are provided. Then, the hygroscopic exothermic fiber generates heat, which makes it easier for the wearer to sweat. Then, the moisture of the wearer's sweat swells mainly the stratum corneum of the wearer's skin with the moisture, and the warming solution easily reaches the TRP channel mainly present in keratinocytes. As a result, the heat sensing time is shortened, and the wearer is less likely to itch during the heat sensing time.

Further, even when the liquid-permeable sheet contains a heat storage material or a far-infrared radiation material, the wearer easily sweats, and due to the moisture of the wearer's sweat, the horny layer of the wearer's skin is mainly water. It swells, and the warming solution becomes easy to reach the TRP channel that is mainly present in keratinocytes (keratinocytes). As a result, the heat sensing time is shortened, and the wearer is less likely to itch during the heat sensing time.

In the absorbent article of the present disclosure, when the liquid-permeable sheet contains a heat insulating material, the wearer easily sweats, and the moisture of the wearer's sweat mainly causes the stratum corneum of the wearer's skin to absorb moisture. The swelling of the sensitizing solution makes it easier for the warming solution to reach the TRP channel mainly present in keratinocytes. As a result, the heat sensing time is shortened, and the wearer is less likely to itch during the heat sensing time.

In the absorbent article of the present disclosure, when the liquid-permeable sheet contains a hygroscopic material, the hygroscopic material holds the wearer's transpiration, moisture such as sweat, and mainly the stratum corneum of the wearer's skin. It becomes easier to swell with water, and the warming solution easily reaches the TRP channel mainly present in keratinocytes. As a result, the heat sensing time is shortened, and the wearer is less likely to itch during the heat sensing time.

In the absorbent article of the present disclosure, the material of the liquid impermeable sheet is not particularly limited as long as it has liquid impermeability, and for example, a film, for example, a moisture permeable film composed of polyethylene, polypropylene or the like. , A non-moisture permeable film, a spunbond or spunlace nonwoven fabric bonded with a moisture permeable film, and a multilayer nonwoven fabric such as SMS.
The liquid impermeable sheet preferably has a basis weight of 10 to 50 g/m ² , and more preferably 15 to 30 g/m ² .

In the absorbent article of the present disclosure, the liquid impermeable sheet is preferably composed of a moisture impermeable film. By doing so, moisture, water vapor, etc. present on the wearer's skin in contact with the warming region (inner warming region, outer warming region, and optionally the central warming region) and the warming region are liquid impermeable sheets. Is more likely to be discharged through the absorbent article to the outside of the absorbent article, and the horny layer of the wearer's skin, which is mainly swollen with water, tends to be retained, and the warming solution is mainly present in keratinocytes. It becomes easier to reach the TRP channel. As a result, the heat sensing time is shortened, and the wearer is less likely to itch during the heat sensing time.

The absorbent article of the present disclosure can include an additional member, for example, an intermediate sheet, between the liquid-permeable sheet and the liquid-impermeable sheet.
Examples of the material of the intermediate sheet include those listed as the material of the liquid-permeable sheet.

The intermediate sheet may include a warming solution and may not include a warming solution. In the case where the intermediate sheet contains a warming solution and the solvent of the warming solution is a lipophilic solvent, the intermediate sheet is a cloth formed from synthetic fibers, for example, a non-woven fabric, a woven fabric, a knitted fabric or the like. It can be, for example, a non-woven fabric formed from synthetic fibers. Further, in the case where the intermediate sheet contains a warming solution and the solvent of the warming solution is a hydrophilic solvent, the intermediate sheet is a cloth composed of cellulosic fibers, for example, a non-woven fabric, a woven fabric, It may be a knitted fabric or the like, for example, a tissue composed of pulp fibers, an air-laid pulp or the like.

When imparting on-demand property to the absorbent article when the absorbent article of the present disclosure has the following configuration [(i) further includes an intermediate sheet, and (ii) the intermediate sheet includes a warming solution): The intermediate sheet can have hydrophilicity or lipophilicity. The hydrophilic intermediate sheet is formed by treating the material forming the intermediate sheet with a hydrophilizing agent known in the art (for example, applying a hydrophilizing agent, kneading the hydrophilizing agent). sell. Examples of the hydrophilizing agent include the hydrophilizing agents listed in the description of the liquid-permeable sheet. By adjusting the polarities (lipophilicity and hydrophilicity) between the liquid-permeable sheet and the intermediate sheet, the absorbent article can have on-demand property.

The intermediate sheet having lipophilicity is obtained by treating the material forming the intermediate sheet with a lipophilic agent known in the art (for example, coating a hydrophilic agent, kneading a hydrophilic agent). Can be formed. Examples of the lipophilic agent include the lipophilic agents listed in the description of the liquid-permeable sheet.

When imparting on-demand property to the absorbent article when the absorbent article of the present disclosure has the following configuration [(i) further includes an intermediate sheet, and (ii) the intermediate sheet includes a warming solution): The intermediate sheet preferably has a fiber density of 0.010 to 0.500 g/cm ³ , more preferably 0.020 to 0.300 g/cm ³ , and even more preferably 0.030 to 0.100 g/cm ^3. Have.
The intermediate sheet preferably has a basis weight of 10 to 200 g/m ² , and more preferably 15 to 150 g/m ² .

When the absorbent article of the present disclosure has the following configuration [(i) further comprises an intermediate sheet, (ii) the intermediate sheet contains a warming solution, and (iii) the liquid-permeable sheet is a fabric]. When imparting the on-demand property to the absorbent article, the liquid-permeable sheet is preferably 0.005 g/cm ³ or more, more preferably 0.010 g/cm ³ or more, further preferably 0. 015g / cm ³ or more, even more preferably 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 .. By doing so, in the state where no force is applied, the warming solution is easily held by the intermediate sheet having a high fiber density, and when the wearer pushes in the absorbent article, the warming solution becomes a liquid-permeable sheet. To the wearer's skin.

When the absorbent article of the present disclosure has the following configuration [(i) further comprises an intermediate sheet, (ii) the intermediate sheet contains a warming solution, and (iii) the liquid-permeable sheet is a fabric]. When imparting the on-demand property to the absorbent article, the liquid-permeable sheet is preferably 0.440 g/cm ³ or less, more preferably 0.300 g/cm ³ or less, further 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 0.035 g/cm ³ or less, with a small fiber density. By doing so, when the wearer pushes the absorbent article, the warming solution easily moves to the liquid-permeable sheet and then easily moves to the wearer's skin.

The fiber densities of the liquid-permeable sheet and the intermediate sheet are measured as follows.
(1) FS-60DS (measurement surface 44 mm (diameter), measurement pressure 3 g/cm ² ) manufactured by Daiei Kagaku Seiki Co., Ltd. in a constant temperature and humidity chamber of temperature: 20±5° C. and humidity: 65±5% RH. And a liquid permeable sheet and/or an intermediate sheet (hereinafter referred to as “sample”) are allowed to stand in the same constant temperature and humidity chamber for 24 hours.
(2) From the above sample, 10 pieces of sample piece [area: s(m ² )] having a size of 0.1 m×0.1 m are collected. When a sample piece with a size of 10 cm×10 cm cannot be collected from each sample, a sample piece with a size of 10 cm×10 cm may be formed from a plurality of samples, or the size of each sample may be adjusted. ..

(3) Using FS-60DS, five different parts of each sample piece were pressed, the thickness of each part after 10 seconds of pressurization was measured, and the average value of the five measured values was measured for each sample piece. Thickness: t (m)
(4) The mass of each sample piece: m (g) is measured.
In addition, when each sample contains a warming solution, each sample piece is washed with a washing solvent that is matched to the polarity of the warming solution (for example, toluene when the solvent of the warming solution is a lipophilic solvent, When the solvent of the warming sensation-imparting solution is a hydrophilic solvent, it is washed with ethanol, etc., and after washing each sample piece is dried at 70° C. for 1 hour, the mass of each sample piece: m (g) taking measurement.

(5) The basis weight: bw (g/m ² ) of each sample piece is calculated by dividing the mass: m (g) of each sample piece by the area: s (m ² ) of each sample piece.
(6) In each sample piece, the basis weight of the sample piece: bw (g/m ² ) is divided by the thickness of the sample piece: t (m), and the unit is adjusted, whereby the fiber density of each sample piece is adjusted. : Fd (g/cm ³ ) is calculated.
(7) The average value of the fiber density: fd (g/cm ³ ) of a total of 10 sample pieces is calculated, and the average value is adopted as the fiber density: FD (g/cm ³ ).

The absorbent article of the present disclosure has the following constitution [(i) further comprises an intermediate sheet, (ii) the intermediate sheet contains a warming solution, and (iii) the solvent of the warming solution is a lipophilic solvent]. When it is provided, when imparting on-demand property to the absorbent article, the lipophilicity of the intermediate sheet is preferably higher than the lipophilicity of the liquid-permeable sheet.

By doing so, the warming solution containing the lipophilic solvent is more likely to be present in the intermediate sheet than the liquid-permeable sheet, and when the wearer pushes the absorbent article, the warming solution is released from the intermediate sheet, The warming solution that has moved to the liquid permeable sheet and passed through the liquid permeable sheet can reach the wearer's skin and impart warmth to the wearer. Also, when the wearer stops pushing the absorbent article, the lipophilicity of the intermediate sheet and the difference in lipophilicity of the liquid-permeable sheet cause the warming solution to reach the wearer's skin gradually, Return to the intermediate sheet. Therefore, it becomes easier for the wearer to control the feeling of warmth, and the on-demand property of the absorbent article is likely to be excellent.

Further, the absorbent article of the present disclosure further includes the following constitution [(i) intermediate sheet, (ii) intermediate sheet contains a warming solution, and (iii) the solvent of the warming solution is a hydrophilic solvent. ], the hydrophilicity of the intermediate sheet is preferably higher than the hydrophilicity of the liquid-permeable sheet when imparting on-demand property to the absorbent article. This is from the viewpoint of improving the on-demand property of the absorbent article.

By doing so, the warming solution containing the hydrophilic solvent is more likely to be present in the intermediate sheet than the liquid-permeable sheet, and when the wearer pushes the absorbent article, the warming solution is released from the intermediate sheet, The warming solution that has moved to the liquid permeable sheet and passed through the liquid permeable sheet can reach the wearer's skin and impart warmth to the wearer. Further, when the wearer stops pushing the absorbent article, the warming solution that has reached the wearer's skin gradually increases due to the difference between the hydrophilicity of the intermediate sheet and the hydrophilicity of the liquid-permeable sheet. Return to the intermediate sheet. Therefore, it becomes easier for the wearer to control the feeling of warmth, and the on-demand property of the absorbent article is likely to be excellent.

The degree of lipophilicity and the degree of hydrophilicity are evaluated as follows.
(1) Prepare an automatic minimal contact angle meter MCA-J of Kyowa Interface Chemistry Co., Ltd. in a constant temperature and humidity chamber of temperature: 20±5° C. and humidity: 65±5% RH, and liquid in the same constant temperature and constant humidity chamber. The permeable sheet and the intermediate sheet (hereinafter, referred to as "sample") are allowed to stand for 24 hours.
(2) From the inkjet of MCA-J, the microdroplets (20 pL) of deionized water are measured on the surface of the sample to be measured (the surface of the fiber when the sample is a cloth, the surface of the sheet when the sample is a sheet). ) And record the state of microdroplets over time.
(3) Image analysis is performed on the image immediately after the microdroplets adhere to the surface of the sample to calculate the contact angle of the microdroplets with respect to the surface of the sample.
(4) For the contact angle, the average value of the measured values at a total of 20 points in different parts of the sample 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).

As the absorbent body, a core wrap covers an absorbent core containing pulp fibers and a polymer absorbent, and a core wrap covers an absorbent core containing a polymer absorbent or an absorbent core composed of a polymer absorbent. The thing etc. are mentioned. Examples of the core wrap include the intermediate sheet described above.

The absorbent article of the present disclosure can be provided with an adhesive portion for fixing the absorbent article to clothes, the skin of a wearer, and the like, and as the adhesive portion, a hot melt adhesive, for example, styrene-ethylene- Pressure sensitive type mainly composed of rubber type such as butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS), styrene-isoprene-styrene (SIS) or mainly olefin type such as linear low density polyethylene. Adhesives or heat-sensitive adhesives; water-sensitive adhesives composed of water-soluble polymers (eg, polyvinyl alcohol, carboxymethyl cellulose, gelatin, etc.) or water-swellable polymers (eg, polyvinyl acetate, sodium polyacrylate, etc.) Can be mentioned.

The absorbent article of the present disclosure is preferably packaged with a packaging sheet before it is used. This is from the viewpoint of protecting the warming solution held by the absorbent article, the viewpoint of not leaking the warming solution held by the absorbent article to the outside, and the like. For example, the absorbent article of the present disclosure is preferably a package in which one or a plurality of absorbent articles are packaged with a packaging sheet, and is a single package in which one absorbent article is packaged with a packaging sheet. Is more preferable.

Examples of the material of the packaging sheet include polyolefin polymers such as polyethylene and polypropylene. The packaging sheet may include an airtight layer from the viewpoint of enhancing the airtightness of the individual wrapping material, and examples of the material of the airtight layer include ethylene vinyl alcohol copolymer, vinylidene chloride-based polymer, and vinylidene methyl chloride. Examples thereof include acrylate copolymer, polyvinyl alcohol, nylon such as nylon 6, aluminum foil, and a substrate film (polyethylene terephthalate or the like) on which alumina, silica or the like is deposited.

The absorbent article is not particularly limited, those having an absorbent body, for example, sanitary napkins, shorts-type sanitary napkins, panty liners such as feathered panty liners, disposable diapers, incontinence pads, interlabial pads, Examples include puerperium pads, breast milk pads, hemorrhoid pads, sweat removal pads, pressure ulcer sheets (dressing sheets), diapers for pets, and sheets for pets.

Note that the warming solution may move on or inside the material forming the absorbent article, and a part of the material adjacent to the material in which the warming solution is arranged is a warming area (inner warming area, In some cases, an outer warming region and a central warming region may be formed. For example, when the warming solution is disposed on the intermediate sheet and the liquid-permeable sheet is made of cloth, a part of the warming solution is, for example, a region on the intermediate sheet side of the adjacent liquid-permeable sheet. In addition, the liquid permeable sheet moves mainly in the thickness direction of the absorbent article, and the region of the liquid permeable sheet on the side of the intermediate sheet is a warming region (inner warming region, outer warming region, and optionally a warming region in the middle). May be formed. Further, when the warming solution is arranged on the liquid permeable sheet, a part of the warming solution is, for example, a region of the adjacent intermediate sheet on the liquid permeable sheet side, or an adjacent absorbent body, In the region of the permeable sheet, mainly in the thickness direction of the absorbent article, the intermediate sheet, the region of the liquid permeable sheet, or the absorber, the region of the liquid permeable sheet, the warm area. (Inner warming region, outer warming region, and optionally warming region) may be formed.

In the absorbent article of the present disclosure, the warming agent that imparts a warm feeling to the wearer has an overlapping region that overlaps with the absorber in the thickness direction (of the absorbent article), the absorber, and the thickness of the absorbent article. Although it is arranged over both the non-overlapping area that does not overlap in the vertical direction, it is difficult for the wearer to itch.
Accordingly, the absorbent article of the present disclosure can be used to impart warmth to the following areas of the wearer, and in the absorbent article of the present disclosure, the inner warming region and the outer warming region, and The optional central warm sensation region can be arranged at positions corresponding to the following sites.

・Prostate (mainly male)
By imparting warmth to the skin in the vicinity of the prostate, it is possible to prevent poor circulation in the vicinity of the prostate, prevent prostatic hypertrophy, prostatitis, and prostate cancer, and alleviate their symptoms.
-Inguinal region By providing warmth to the skin in the vicinity of the groin region, groin hernias can be prevented and their symptoms can be relieved.
-Femoral artery By providing warmth to the skin near the femoral artery, it is possible to prevent prostatic hypertrophy, prostatitis and prostate cancer, alleviate those symptoms, and prevent leg coldness. it can.

・Bladder, pelvic floor muscles (mainly female)
By giving a warm feeling to the skin in the vicinity of the bladder, pelvic floor muscles, etc., it is possible to prevent the body from becoming cold and to prevent urine from leaking.

Hereinafter, the present disclosure will be described by way of examples, but the present disclosure is not limited to these examples.
[Production Example 1]
Sanitary napkin No. 1 according to the first embodiment. 1 was produced. The liquid-permeable sheet is an air-through non-woven fabric (basis weight: 30 g/m ² ), and the absorber is a pulp (basis weight: 200 g/m ² ) and a polymer absorbent (basis weight: 20 g/m ² ). Was an absorbent core covered with a core wrap composed of a tissue, and the liquid impermeable sheet was a polyethylene film (basis weight: 24 g/m ² ).

The inner warming region, the outer warming region, and the central warming region are arranged on the liquid permeable sheet. The amount was set so that the amount would be 1.0 g/m ² . The warming solution was composed of vanillyl butyl ether (10.0% by mass) as a warming agent and isononyl isononanoate as a solvent. Further, the warming solution was applied to the outer warming region such that the basis weight of the warming solution was 30% by mass of the basis weight of the warming solution in the inner warming region. The warming solution was applied to the central warming region such that the basis weight of the warming solution was 120% by mass of the basis weight of the warming solution in the inner warming region.

[Production Example 2]
Sanitary napkin No. 6 was produced in the same manner as in Production Example 1 except that the central warm area was not formed. 2 was produced.

[Production Example 3]
Sanitary napkin No. 6 was prepared in the same manner as in Production Example 1 except that the warming solution in the outer warming region was arranged such that the basis weight of the warming solution was the same as the basis weight of the inner warming region. 3 was produced.
[Production Example 4]
Sanitary napkin No. 6 was prepared in the same manner as in Production Example 2 except that the warming solution in the outer warming region was arranged such that the basis weight of the warming solution was the same as that in the inner warming region. 4 was produced.

[Examples 1 and 2 and Comparative Examples 1 and 2]
For each of the plurality of subjects, a sanitary napkin No. 1-No. 4 was worn, and the warming effect within 2 hours after wearing was evaluated in 5 grades (1: did not remember warming effect, 2: felt extremely weak warming effect, 3: weak warming effect , 4: remembered a moderate warming effect, 5: remembered a strong warming effect), and the difficulty in remembering itching within 2 hours after wearing was evaluated as follows. It was evaluated by the evaluation value of 5 levels. The results (the average value is rounded off to be an integer) are shown in Table 1.
5: No difference in warming effect was noted in each area, and no itching was noted.
4: Almost no difference in warming sensation was observed in each area, and almost no itchiness was observed.
3: A slight difference in warming sensation was noted in each area, and a slight itchiness was felt.
2: I felt a difference in warming sensation in each area, and itched enough to endure.
1: I felt a difference in warming sensation in each area, and I felt itching that I could not stand.

1 Sanitary napkin 3 Liquid permeable sheet 5 Liquid impermeable sheet 7 Absorber 9,10 Side edge 11 Overlapping area 13 Non-overlapping area 15,16 Side edge area 17 Clothes 19,20 Inside warm feeling area 21,22 Outside temperature Sensitive area 23 Central warm feeling area 25 Adhesive part 27 Flap part 29 Seal part 31 Embossing part 33 Packaging sheet L Longitudinal direction W Width direction T Thickness direction F ₁ Longitudinal first folding axis F ₂ Longitudinal second folding axis F ₃ Width direction first folding axis F ₄ Width direction second folding axis

Claims (10)

A liquid-permeable sheet having a longitudinal direction, a width direction, and a thickness direction, a liquid-impermeable sheet, and an absorbent body having a pair of side edges extending in the longitudinal direction, which are arranged between them. An absorbent article,
The absorbent article is divided into an overlapping region overlapping with the absorber in the thickness direction, and a non-overlapping region not overlapping with the absorber in the thickness direction,
The absorbent article includes a pair of side edge regions, each of which includes each of the pair of side edges,
In each of the pair of side edge regions,
(I) There is an inner warming region arranged in the overlapping region and an outer warming region arranged in the non-overlapping region,
(Ii) both the inner warming region and the outer warming region include a warming solution containing a warming agent that activates a TRP channel and a solvent,
(Iii) The basis weight of the warming solution in the outer warming region is smaller than the basis weight of the warming solution in the inner warming region,
The absorbent article as described above. The absorbent property according to claim 1, wherein in each of the pair of side edge regions, the inner temperature-sensing region and the outer temperature-sensing region are adjacent to each other with each of the pair of side edges sandwiched therebetween. Goods. The absorbent article according to claim 1, wherein in each of the pair of side edge regions, the inner temperature sensation region and the outer temperature sensation region are arranged on the liquid permeable sheet. The absorbent article includes a central warming region between the pair of side edge regions, the central warming region includes the warming solution, and the basis weight of the warming solution in the central warming region is The absorbent article according to any one of claims 1 to 3, which has a basis weight of the warming solution in each of the inner warming regions of the pair of side edge regions. The absorbent article according to claim 4, wherein the central warming region is adjacent to the inner warming regions of the pair of side edge regions, respectively. The absorbent article according to claim 4 or 5, wherein the central warm area is arranged on the liquid-permeable sheet. The absorbent article according to any one of claims 1 to 6, wherein the warming agent is an agonist for the TRPV1 receptor. The absorbent article according to any one of claims 1 to 7, wherein the solvent is a lipophilic solvent. The absorbent article according to any one of claims 1 to 8, wherein the absorbent article is selected from the group consisting of a sanitary napkin, a shorts-type sanitary napkin, a feathered panty liner, and a disposable diaper. The absorbent article according to any one of claims 1 to 9, wherein the absorbent article does not include a heat generating agent.

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