阅读说明：本技术 吸收性物品、吸收性物品用的温感构件以及温感构件粘贴于吸收性物品的使用 (Absorbent article, temperature-sensitive member for absorbent article, and use of temperature-sensitive member attached to absorbent article ) 是由 小松慎平 高桥雄二 林俊久 于 2018-12-27 设计创作，主要内容包括：本公开的目的在于提供一种在非穿着时不易使温感溶液移动,在穿着时易于赋予温感的吸收性物品。本公开的吸收性物品具有以下的结构。一种吸收性物品(1),其具有能够沿腰身方向(Wa)伸长的腰身区域(WR),该吸收性物品包括吸收体(5)以及配置于能够沿腰身方向(Wa)伸长的腰身区域(WR)且向穿着者赋予温感的温感构件(7),其特征在于,温感构件(7)包括温感赋予层(101)、不透液性层(131)以及含有温感溶液的温感溶液保持层(121),上述温感溶液包含溶剂和用于激活TRP通道的温感剂,温感赋予层(101)包括在使腰身区域(WR)沿腰身方向(Wa)伸长时能够释放上述温感溶液的多个开孔部(107)。(The purpose of the present disclosure is to provide an absorbent article that is less likely to allow a temperature-sensitive solution to migrate when not worn and that is more likely to impart a temperature-sensitive effect when worn. The absorbent article of the present disclosure has the following structure. An absorbent article (1) having a Waistline Region (WR) which is extensible in a waistline direction (Wa), the absorbent article comprising an absorbent (5) and a temperature-sensitive member (7) which is disposed in the Waistline Region (WR) which is extensible in the waistline direction (Wa) and which imparts a temperature-sensitive sensation to a wearer, characterized in that the temperature-sensitive member (7) comprises a temperature-sensitive layer (101), a liquid-impermeable layer (131), and a temperature-sensitive solution holding layer (121) which contains a temperature-sensitive solution containing a solvent and a temperature-sensitive agent for activating a TRP channel, and the temperature-sensitive layer (101) comprises a plurality of opening portions (107) which are capable of releasing the temperature-sensitive solution when the Waistline Region (WR) is extended in the waistline direction (Wa).)

1. An absorbent article having a waistline region that is extensible in a waistline direction, the absorbent article including an absorber and a temperature-sensitive member that is disposed in the waistline region so as to be extensible in the waistline direction and that provides a wearer with a temperature sensation,

the temperature-sensitive member comprises a temperature-sensitive layer, a liquid-impermeable layer, and a temperature-sensitive solution-retaining layer disposed between the temperature-sensitive layer and the liquid-impermeable layer and containing a temperature-sensitive solution,

the temperature sensitive solution comprises a solvent and a temperature sensitive agent for activating a TRP channel,

the temperature-sensitive layer includes a plurality of opening portions capable of releasing the temperature-sensitive solution when the waistline region is stretched in the waistline direction.

2. The absorbent article according to claim 1, wherein the warmth-giving layer is constituted by a liquid-impermeable film, and the plurality of opening portions each extend in a direction intersecting the waistline direction.

3. The absorbent article according to claim 2, wherein the warmth-imparting layer includes a skin-side surface and a non-skin-side surface opposite to the skin-side surface, and the plurality of aperture portions are arranged so as not to reach the non-skin-side surface from the skin-side surface or so as not to reach the skin-side surface from the non-skin-side surface in the thickness direction of the warmth-imparting member.

4. The absorbent article according to claim 3, wherein each of the plurality of opening portions is a non-through slit portion, and the plurality of opening portions are arranged intermittently in the waistline direction such that two adjacent opening portions in the waistline direction partially overlap in the waistline direction.

5. The absorbent article according to any one of claims 1 to 4, wherein the warm-feeling solution holding layer is made of fabric and includes a plurality of through-slit portions extending in a direction intersecting the waistline direction.

6. The absorbent article according to claim 5, wherein the plurality of through-slit portions are arranged intermittently in the waistline direction such that two adjacent through-slit portions partially overlap in the waistline direction.

7. The absorbent article according to any one of claims 1 to 6, wherein the liquid-impermeable layer is a stretchable film stretchable in the waistline direction.

8. The absorbent article according to any one of claims 1 to 7, wherein the temperature-sensitive solution holding layer has a thickness of 30g/cm²The thickness of (2) with respect to 3g/cm²The ratio of the thickness under load, i.e., the thickness retention rate, is 70% or less.

9. The absorbent article according to any one of claims 1 to 8, wherein the warming agent is an agonist for TRPV1 receptor.

10. The absorbent article according to any one of claims 1 to 9, wherein the solvent is a lipophilic solvent.

11. The absorbent article according to any one of claims 1 to 10, wherein the absorbent article does not contain a heat generating agent.

12. The absorbent article according to any one of claims 1 to 11, wherein the absorbent article is selected from the group consisting of a pants-type sanitary napkin and a disposable diaper.

13. A temperature-sensitive member which is used by being attached to an absorbent article and which imparts a temperature sensation to a wearer, wherein,

the temperature-sensitive member includes: a temperature-sensitive layer; a liquid impermeable layer; a temperature-sensitive solution-retaining layer which is disposed between the temperature-sensitive layer and the liquid-impermeable layer and contains a temperature-sensitive solution; and an adhesive part fixed to the liquid-impermeable layer for adhering the temperature-sensitive member to the absorbent article,

the temperature sensitive solution comprises a solvent and a temperature sensitive agent for activating a TRP channel,

the temperature-sensitive layer includes a plurality of opening portions capable of releasing the temperature-sensitive solution when elongated in a predetermined direction.

14. The temperature-sensitive member according to claim 13, wherein the temperature-sensitive member is used by being attached to a waistline region of an absorbent article that has a waistline region that is extensible in a waistline direction and includes an absorber, and the predetermined direction is the waistline direction.

15. A use of a temperature sensitive member for imparting a temperature sensation to a wearer, which is attached to an absorbent article, wherein,

the temperature-sensitive member includes: a temperature-sensitive layer; a liquid impermeable layer; a temperature-sensitive solution-retaining layer which is disposed between the temperature-sensitive layer and the liquid-impermeable layer and contains a temperature-sensitive solution; and an adhesive part fixed to the liquid-impermeable layer for adhering the temperature-sensitive member to the absorbent article,

the temperature sensitive solution comprises a solvent and a temperature sensitive agent for activating a TRP channel,

the temperature-sensitive layer includes a plurality of opening portions capable of releasing the temperature-sensitive solution when elongated in a predetermined direction.

Technical Field

The present disclosure relates to an absorbent article, a temperature-sensitive member that is used by being attached to a waistline region of the absorbent article to provide a wearer with a temperature sensation, and use of the absorbent article in which the temperature-sensitive member that provides the wearer with a temperature sensation is attached.

Background

A temperature sensitive article that gives a wearer a temperature sensation is known. In particular, in a temperature sensitive article for providing a temperature sensitive feeling, it is preferable to include a heat generating agent acting on the skin of a wearer to increase the temperature of the skin of the wearer, as compared with a heat generating agent including a physical heat generation, from the viewpoint of preventing low-temperature burn.

Patent document 1 describes an absorbent article, preferably a sanitary disposable absorbent article, which includes a medicine capable of transmitting a sensation to a wearer without creating an external condition perceived by the wearer for the purpose of improving comfort.

Further, paragraph [0040] of patent document 1 describes that a heating agent is a preferable drug, and the heating agent can stimulate thermoreceptors (i.e., warmth) without causing a temperature change on the body surface of the wearer of the article.

In paragraph [0109] of patent document 1, it is described that "a carrier vehicle for a drug, typically a cooling agent, is a composition in the form of a lotion (lotion), cream, oil, ointment, powder, emulsion, foam, or gel. Typical carrier vehicles for medicaments such as cooling agents include aqueous or alcoholic solutions, oils such as hydrocarbon oils, fatty acid esters, long-chain alcohols, and silicone oils, and ultrafine particulate solids such as lipids, starch, talc, and the like. ".

Disclosure of Invention

Problems to be solved by the invention

In the absorbent article described in patent document 1, when the heating agent is used together with the carrier medium, the heating agent and the carrier medium may move from the place where the heating agent and the carrier medium are disposed to the absorbent body or the like during storage of the absorbent article, and the absorbency of the absorbent body may be lowered.

Accordingly, an object of the present disclosure is to provide an absorbent article that is less likely to move a temperature sensitive solution when not worn and is more likely to impart a temperature sensation when worn.

Means for solving the problems

The present inventors have found an absorbent article characterized by having a waistline region extensible in the waistline direction, comprising: an absorbent body; and a temperature-sensitive member that gives a temperature-sensitive sensation to a wearer and is disposed in the waistline region that is extensible in the waistline direction, wherein the temperature-sensitive member includes a temperature-sensitive layer, a liquid-impermeable layer, and a temperature-sensitive solution holding layer containing a temperature-sensitive solution that is disposed between the temperature-sensitive layer and the liquid-impermeable layer, the temperature-sensitive solution containing a solvent and a temperature-sensitive agent for activating a TRP channel, and the temperature-sensitive layer includes a plurality of opening portions that are capable of releasing the temperature-sensitive solution when the waistline region is extended in the waistline direction.

ADVANTAGEOUS EFFECTS OF INVENTION

The absorbent article of the present disclosure is less likely to move the temperature sensitive solution when not worn, and is likely to impart a temperature sensation when worn.

Drawings

Fig. 1 is a front view of a pants-type sanitary napkin 1 according to embodiment 1.

Fig. 2 is an expanded view of the pants-type sanitary napkin 1 according to embodiment 1.

Fig. 3 is a plan view of the temperature-sensitive member 7.

Fig. 4 is an exploded perspective view of the temperature-sensitive member 7.

Fig. 5 is a partial sectional view of the V-V end face of fig. 4.

Fig. 6 is a view for explaining the plurality of slit portions 107 when the temperature sensitive member 7 is elongated in the waistline direction Wa.

Fig. 7 is a view showing a state in which the pants-type sanitary napkin 1 is worn.

Fig. 8 is an expanded view of a pants-type sanitary napkin 201 according to embodiment 2.

Fig. 9 is a partial cross-sectional view of the IX-IX end face of fig. 8.

Fig. 10 is a development view of the disposable diaper 401 of embodiment 3.

Fig. 11 is a developed view of the disposable diaper 401.

Detailed Description

Specifically, the present disclosure relates to the following technical solutions.

[ solution 1]

An absorbent article having a waistline region that is extensible in a waistline direction, the absorbent article including an absorber and a temperature-sensitive member that is disposed in the waistline region so as to be extensible in the waistline direction and that provides a wearer with a temperature sensation,

the temperature-sensitive member comprises a temperature-sensitive layer, a liquid-impermeable layer, and a temperature-sensitive solution-retaining layer containing a temperature-sensitive solution and disposed between the temperature-sensitive layer and the liquid-impermeable layer,

the temperature sensitive solution comprises a solvent and a temperature sensitive agent for activating a TRP channel,

the temperature-sensitive layer includes a plurality of opening portions capable of releasing the temperature-sensitive solution when the waistline region is stretched in the waistline direction.

In the above-described absorbent article, the temperature-sensitive solution holding layer for holding the temperature-sensitive solution is disposed between the temperature-sensitive layer and the liquid-impermeable layer, and the temperature-sensitive layer includes a plurality of opening portions capable of releasing the temperature-sensitive solution when the waist region of the absorbent article is stretched in the waist direction, so that the temperature-sensitive solution is less likely to move or volatilize from the temperature-sensitive member when the absorbent article is not worn (before wearing), and the temperature-sensitive layer can release the temperature-sensitive solution and impart a temperature to the wearer when the waist region or the temperature-sensitive member is stretched in the waist direction when the absorbent article is worn.

[ solution 2]

The absorbent article according to claim 1, wherein the temperature sensation imparting layer is formed of a liquid-impermeable film, and the plurality of opening portions each extend in a direction intersecting the waistline direction.

The temperature-sensitive layer of the absorbent article is composed of a liquid-impermeable film, and the plurality of opening portions extend in the direction intersecting the waistline direction, so that the temperature-sensitive solution is less likely to migrate, volatilize, or the like from the temperature-sensitive member when the absorbent article is not worn. When the waist region or the temperature-sensitive member is extended in the waist direction when the absorbent article is worn, the plurality of opening portions are respectively expanded in the waist direction, and the temperature-sensitive solution held by the temperature-sensitive solution holding layer moves to the wearer through the expanded plurality of opening portions, thereby imparting a temperature sensation to the wearer.

[ solution 3]

The absorbent article according to claim 2, wherein the warmth-imparting layer includes a skin-side surface and a non-skin-side surface opposite to the skin-side surface, and the plurality of aperture portions are arranged so as not to reach the non-skin-side surface from the skin-side surface or so as not to reach the skin-side surface from the non-skin-side surface in the thickness direction of the warmth-imparting member.

In the absorbent article, the plurality of opening portions are arranged so as not to reach the non-skin side surface from the skin side surface as a starting point or so as not to reach the skin side surface from the non-skin side surface as a starting point, and therefore, the temperature sensitive solution is less likely to move from the temperature sensitive member or volatilize when the absorbent article is not worn.

[ solution 4]

The absorbent article according to claim 3, wherein each of the plurality of opening portions is a non-through slit portion, and the plurality of opening portions are arranged intermittently in the waistline direction such that two adjacent opening portions in the waistline direction partially overlap in the waistline direction.

In the absorbent article, the plurality of opening portions formed by the non-through slit portions are intermittently arranged in the waistline direction such that two adjacent opening portions partially overlap in the front waistline direction, and therefore, when the absorbent article is not worn, the temperature-sensitive solution can be held in a state in which the temperature-sensitive solution is less likely to move from the temperature-sensitive layer to the outside of the temperature-sensitive member, volatilize, or the like, and when the absorbent article is worn, the temperature-sensitive layer itself is likely to stretch in the waistline direction, and the temperature-sensitive solution held by the temperature-sensitive solution holding layer can be moved to the wearer through the plurality of opening portions of the temperature-sensitive layer, thereby giving a feeling of temperature to the wearer.

[ solution 5]

The absorbent article according to any one of claims 1 to 4, wherein the temperature-sensitive solution holding layer is made of fabric and includes a plurality of through-slit portions extending in a direction intersecting the waistline direction.

In the above-described absorbent article, the temperature-sensitive solution holding layer is made of a fabric and includes the plurality of through-slit groove portions extending in the direction intersecting the waistline direction, and therefore, when the temperature-sensitive member is stretched in the waistline direction when the absorbent article is worn, the plurality of through-slit groove portions deform, and the temperature-sensitive solution holding layer itself is less likely to become thin, and therefore, it is possible to suppress the temperature-sensitive solution held in the temperature-sensitive solution holding layer from being excessively applied to the wearer at the initial stage of wearing of the absorbent article. Further, even when the temperature-sensitive solution holding layer is made of a fabric having no extensibility, the temperature-sensitive solution holding layer and the temperature-sensitive member easily follow the extension of the absorbent article in the waistline direction, and therefore, the wearer hardly feels a feeling of pulling when wearing the absorbent article.

[ solution 6]

The absorbent article according to claim 5, wherein the plurality of through-slit portions are intermittently arranged in the waistline direction such that two adjacent through-slit portions partially overlap in the waistline direction.

In the absorbent article, the plurality of through-slit parts are intermittently arranged in the waistline direction such that two adjacent through-slit parts partially overlap in the waistline direction, and therefore, the temperature-sensitive layer tends to stretch in the waistline direction when the absorbent article is worn, and the wearer does not feel a feeling of pulling when the absorbent article is worn.

[ solution 7]

The absorbent article according to any one of claims 1 to 6, wherein the liquid-impermeable layer is a stretchable film stretchable in the waistline direction.

In the absorbent article, the liquid-impermeable layer is a stretchable film that can be stretched in the waistline direction, and therefore the liquid-impermeable layer or the temperature-sensitive member can easily follow the stretching of the waistline region of the absorbent article when the absorbent article is worn.

[ solution 8]

The absorbent article according to any one of claims 1 to 7, wherein the temperature-sensitive solution holding layer has a thickness of 30g/cm²The thickness of (2) with respect to 3g/cm²The ratio of the thickness under load, i.e., the thickness retention rate, is 70% or less.

In the absorbent article, since the thickness retention rate is within a predetermined range, when body pressure or the like is applied to the temperature-sensitive member, the temperature-sensitive solution holding layer is easily crushed, and the temperature-sensitive solution held by the temperature-sensitive solution holding layer is easily moved to the skin of the wearer through the plurality of opening portions of the temperature-sensitive layer.

[ solution 9]

The absorbent article according to any one of claims 1 to 8, wherein the warming agent is an agonist for TRPV1 receptor.

In the above absorbent article, the temperature sensitive agent is an agonist for the TRPV1 receptor, and therefore, when the absorbent article is worn, the wearer can feel the activation temperature threshold of the TRPV1 receptor, that is, a temperature exceeding 43 ℃. As a result, the absorbent article can provide a wearer with a sufficient feeling of warmth.

[ solution 10]

The absorbent article according to any one of claims 1 to 9, wherein the solvent is a lipophilic solvent.

In the absorbent article, the solvent constituting the temperature-sensitive solution is a lipophilic solvent, and therefore the temperature-sensitive member itself can suppress the volatilization of the lipophilic solvent, and therefore the packaging of the absorbent article, for example, the individual packaging can be simplified.

[ solution 11]

The absorbent article according to any one of claims 1 to 10, wherein the absorbent article does not contain a heat generating agent.

Since the absorbent article does not contain a heat generating agent, it is difficult for the wearer to suffer low-temperature burns even when the absorbent article is used for a long time.

[ solution 12]

The absorbent article according to any one of claims 1 to 11, wherein the absorbent article is selected from the group consisting of a pants-type sanitary napkin and a disposable diaper.

The absorbent article is selected from the group consisting of a pants-type sanitary napkin and a disposable diaper, and therefore can exert absorption performance and impart a feeling of warmth to the wearer.

[ solution 13]

A temperature-sensitive member which is used by being attached to an absorbent article and which imparts a temperature sensation to a wearer, wherein,

the temperature-sensitive member includes: a temperature-sensitive layer; a liquid impermeable layer; a temperature-sensitive solution-retaining layer which is disposed between the temperature-sensitive layer and the liquid-impermeable layer and contains a temperature-sensitive solution; and an adhesive part fixed to the liquid-impermeable layer for adhering the temperature-sensitive member to the absorbent article,

the temperature sensitive solution comprises a solvent and a temperature sensitive agent for activating a TRP channel,

the temperature-sensitive layer includes a plurality of opening portions capable of releasing the temperature-sensitive solution when elongated in a predetermined direction.

When the temperature-sensitive member is used by being attached to an absorbent article, the temperature-sensitive solution holding layer for holding the temperature-sensitive solution is disposed between the temperature-sensitive layer and the liquid-impermeable layer, and the temperature-sensitive layer includes a plurality of opening portions capable of releasing the temperature-sensitive solution when the temperature-sensitive layer is stretched in a predetermined direction. Therefore, when the temperature sensitive member is used while being attached to the absorbent article, the temperature sensitive solution is less likely to move from the temperature sensitive member, volatilize, or the like when the absorbent article is not worn, and when the absorbent article or the temperature sensitive member is stretched in a predetermined direction when the absorbent article is worn, the temperature sensitive layer can release the temperature sensitive solution and impart a temperature sensation to the wearer.

[ solution 14]

The temperature-sensitive member according to claim 13, wherein the temperature-sensitive member is used by being attached to a waistline region of an absorbent article that has a waistline region that is extensible in a waistline direction and includes an absorber, and the predetermined direction is the waistline direction.

The temperature-sensitive member is used by being attached to the waistline region of the absorbent article so that the plurality of hole portions of the temperature-sensitive layer can release the temperature-sensitive solution when the temperature-sensitive member is stretched in the waistline direction. Therefore, when the temperature sensitive member is used while being attached to the waistline region of the absorbent article, the temperature sensitive solution is less likely to move from the temperature sensitive member, volatilize, or the like when the absorbent article is not worn, and on the other hand, when the absorbent article or the temperature sensitive member is stretched in the waistline direction of the absorbent article when the absorbent article is worn, the temperature sensitive solution is more likely to be released from the temperature sensitive layer, and the temperature is more likely to be imparted to the wearer.

[ solution 15]

A use of a temperature sensitive member for imparting a temperature sensation to a wearer, which is attached to an absorbent article, wherein,

the temperature-sensitive member includes: a temperature-sensitive layer; a liquid impermeable layer; a temperature-sensitive solution-retaining layer which is disposed between the temperature-sensitive layer and the liquid-impermeable layer and contains a temperature-sensitive solution; and an adhesive part fixed to the liquid-impermeable layer for adhering the temperature-sensitive member to the absorbent article,

the temperature sensitive solution comprises a solvent and a temperature sensitive agent for activating a TRP channel,

the temperature-sensitive layer includes a plurality of opening portions capable of releasing the temperature-sensitive solution when elongated in a predetermined direction.

In the above temperature-sensitive member, the temperature-sensitive solution holding layer for holding the temperature-sensitive solution is disposed between the temperature-sensitive layer and the liquid-impermeable layer, and the temperature-sensitive layer includes a plurality of opening portions capable of releasing the temperature-sensitive solution when elongated in a predetermined direction. Therefore, in the above-described use, the temperature sensitive member used by being attached to the absorbent article is less likely to cause the temperature sensitive solution to move or volatilize from the temperature sensitive member when the absorbent article is not worn, and on the other hand, when the absorbent article or the temperature sensitive member is extended in a predetermined direction when the absorbent article is worn, the temperature sensitive layer can release the temperature sensitive solution and give a temperature sensation to the wearer.

The absorbent article of the present disclosure, the temperature sensitive member used by being attached to the absorbent article, and the use of the temperature sensitive member attached to the absorbent article will be described in detail below.

< absorbent article >

Fig. 1 to 7 are views for explaining a pants-type sanitary napkin 1 as an absorbent article according to one embodiment of the present disclosure (hereinafter, referred to as "embodiment 1"). Hereinafter, the "pants-type sanitary napkin as the absorbent article according to embodiment 1" may be simply referred to as "pants-type sanitary napkin according to embodiment 1".

Specifically, fig. 1 is a front view of a pants-type sanitary napkin 1 according to embodiment 1. Fig. 2 is an expanded view of the pants-type sanitary napkin 1 according to embodiment 1. Fig. 3 is a plan view of the temperature-sensitive member 7. Fig. 4 is an exploded perspective view of the temperature-sensitive member 7. Fig. 5 is a partial sectional view of the V-V end face of fig. 4. Fig. 6 is a view for explaining the plurality of slit portions 107 when the temperature sensitive member 7 is elongated in the waistline direction Wa. Fig. 7 is a view showing a state in which the pants-type sanitary napkin 1 is worn.

The pants-type sanitary napkin 1 according to embodiment 1 has a longitudinal direction Lo, a waistline direction Wa, and a thickness direction T that are orthogonal to each other. In the pants-type sanitary napkin 1, the longitudinal direction Lo is a direction perpendicular to the waistline direction Wa. The pants-type sanitary napkin 1 includes a pants-type sanitary napkin main body 3 including an absorber 5, and a temperature-sensitive member 7 disposed on the pants-type sanitary napkin main body 3. The temperature-sensitive member 7 is disposed on the pants-type sanitary napkin main body 3 so as to be disposed at a position corresponding to the lower abdomen of the wearer when the wearer wears the pants-type sanitary napkin 1.

The pants-type sanitary napkin main body 3 (pants-type sanitary napkin 1) is divided into a front waistline region WR along the longitudinal direction Lo_FCrotch region C and back waist region WR_R. The absorber 5 is in the front waistline region WR of the pants-type sanitary napkin main body 3_FCrotch region C and back waist region WR_RAnd the temperature-sensitive member 7 is disposed in the front waistline region WR_F。

Front waistline region WR of pants-type sanitary napkin main body 3_FThe method comprises the following steps: a front-side laminate sheet comprising a front-side stretchable nonwoven fabric 11 disposed on the side closer to the wearer and a front-side nonwoven fabric 13 (specifically, a spunbond nonwoven fabric) disposed on the side farther from the wearer; and a front side waist belt member 15 disposed along the waistline region WR. The front-side laminate described above is formed by: a laminate in which the front stretchable nonwoven fabric 11 and the front nonwoven fabric 13 are laminated with the hot melt adhesive interposed therebetween is formed, and then the laminate is subjected to gear stretching. The front side waist belt member 15 is fixed to a folded portion of the front side laminate, which is folded back with the front side stretch nonwoven fabric 11 facing the inside.

Rear waist region WR of pants-type sanitary napkin 1_RThe method comprises the following steps: a back side laminate comprising a back side stretchable nonwoven fabric 19 disposed on the side closer to the wearer and a back side nonwoven fabric 21 disposed on the side farther from the wearer(specifically, spun-bonded nonwoven fabric); and a rear side waist belt member 23 disposed along the waistline region WR. The rear-side laminate described above is formed by: a laminate in which the rear stretchable nonwoven fabric 19 and the rear nonwoven fabric 21 are laminated with the hot melt adhesive interposed therebetween is formed, and then the laminate is subjected to gear stretching. The rear waistband member 23 is fixed to a folded portion of the rear laminate sheet, which is folded back with the rear stretchable nonwoven fabric 19 being inside. The front nonwoven fabric 13 and the back nonwoven fabric 21 are integrally formed.

Front waistline region WR_FAnd the back waistline region WR_RBy making a front waistline region WR_FThe front side joining parts of the two front side joining parts 17 and the back waistline region WR_RThe two rear side joint portions 25 are joined to form a waistline region WR which can be elongated in the waistline direction Wa.

The structure of the pants-type sanitary napkin main body 3 is the same as that described in japanese patent laid-open No. 2016-059713, and therefore, the detailed description thereof is omitted.

The temperature-sensitive member 7 includes in order: a temperature-sensitive layer 101 having a skin-side surface 103 and a non-skin-side surface 105; a temperature-sensitive solution holding layer 121 adjacent to the non-skin side surface 105 of the temperature-sensitive layer 101; a liquid-impermeable layer 131 that is adjacent to the surface of the temperature-sensitive solution holding layer 121 on the side opposite to the temperature-sensitive layer 101 and that is in contact with the garment; and a bonding portion 133 that is fixed to the liquid-impermeable layer 131 and bonds the liquid-impermeable layer 131 to the pants-type sanitary napkin 1.

The temperature-sensitive layer 101 and the liquid-impermeable layer 131 have substantially the same dimensions in the longitudinal direction Lo and the waistline direction Wa, and have a dimension one-step larger than the temperature-sensitive solution holding layer 121. The temperature-sensitive member 7 seals the peripheral edge portions of the temperature-sensitive layer 101 and the liquid-impermeable layer 131, thereby suppressing the temperature-sensitive solution held by the temperature-sensitive solution holding layer 121 disposed therebetween from leaking out of the temperature-sensitive member 7.

The temperature-sensitive solution holding layer 121 holds, in its entirety, a temperature-sensitive solution (not shown) containing a lipophilic solvent and a temperature-sensitive agent for activating the TRP channel.

The temperature-sensitive layer 101 is made of a liquid-impermeable film and includes a plurality of slit parts 107 as a plurality of opening parts, and the plurality of slit parts 107 are capable of releasing the temperature-sensitive solution when the waistline region WR is extended in the waistline direction Wa. As shown in fig. 5, each of the plurality of slit portions 107 includes: an opening 109 disposed on the skin side surface 103; a slot bottom 113 disposed between the skin-side surface 103 and the non-skin-side surface 105; and a slot wall 111 connecting the opening 109 and the slot bottom 113. In other words, each of the plurality of slit portions 107 constitutes a non-penetrating slit portion. Thus, the temperature-sensitive solution is less likely to move from the temperature-sensitive member 7 to the outside, for example, the absorbent body 5, when the pants-type sanitary napkin 1 is not worn.

The openings 109 are arranged along the longitudinal direction Lo for each of the plurality of slit portions 107. The plurality of slit portions 107 are arranged separately in the waistline direction Wa. Further, the plurality of slit portions are arranged in the waistline direction Wa as follows: for two slit portions 107 adjacent in the waistline direction Wa, a part of them overlaps and the remaining part thereof does not overlap in the waistline direction Wa.

Thus, as shown in fig. 6, when the temperature-sensitive member 7 is extended in the waistline direction Wa, the openings 109 of the plurality of slit portions 107 which are non-through slit portions are extended in the waistline direction Wa, the opening area of the openings 109 is increased, and finally, the openings 109 are opened, in other words, the plurality of slit portions 107 form through slits.

Further, since the temperature-sensitive layer 101 is formed of a liquid-impermeable film having the plurality of slit portions 107, the temperature-sensitive layer 101 can seal the temperature-sensitive solution held by the temperature-sensitive solution holding layer 121 before the pants-type sanitary napkin 1 is worn, and the temperature-sensitive layer 101 can release the temperature-sensitive solution held by the temperature-sensitive solution holding layer 121 while following the extension of the waistline region WR when the pants-type sanitary napkin 1 is worn.

The temperature-sensitive solution holding layer 121 includes a skin-side surface 123 on the temperature-sensitive layer 101 side and a non-skin-side surface 125 on the liquid-impermeable layer 131 side. The temperature-sensitive solution holding layer 121 is made of pulp air-laid nonwoven fabric, and includes a plurality of through slit parts 127. The plurality of through slit portions 127 pass from the skin-side surface 123 to the non-skin-side surface 125.

The plurality of through slit portions 127 are arranged along the longitudinal direction Lo. The plurality of through slit portions 127 are arranged apart from each other in the waistline direction Wa. Further, the plurality of through-slit portions 127 are arranged in the waistline direction Wa as follows: for two through-slit portions 127 adjacent in the waistline direction Wa, a part of them overlaps and the remaining part thereof does not overlap in the waistline direction Wa.

Thus, when the wearer wears the pants-type sanitary napkin 1 while extending the waist region WR of the pants-type sanitary napkin 1 in the waist direction Wa and wears the pants-type sanitary napkin 1 with the waist region WR extended, the through-slit portion 127 extends in the waist direction Wa, and the temperature-sensitive solution holding layer 121 and the temperature-sensitive member 7 can follow the extension of the waist region WR.

The liquid-impermeable layer 131 is composed of a stretchable film that can be stretched in the waistline direction Wa.

The pressure-sensitive adhesive section 133 is an adhesive having stretchability, and is stretchable along the waistline direction Wa, and specifically, a plurality of pressure-sensitive adhesive section portions 133p are disposed so as to be separated along the waistline direction Wa.

As shown in fig. 7, when the wearer wears the pants-type sanitary napkin 1 while extending the waist region WR of the pants-type sanitary napkin 1 in the waist direction Wa and then wears the pants-type sanitary napkin 1 in a state where the waist region WR is extended, the openings 109 of the plurality of slit portions 107 which are non-through slit portions are expanded in the waist direction Wa, the openings 109 are extended in the waist direction Wa, the opening area of the openings 109 is increased (see fig. 6 above), the slit portions 107 are split in the thickness direction T, the slit bottoms 113 are brought close to the non-skin side surfaces 105, and finally, the slit bottoms 113 reach the non-skin side surfaces 105, and the slit portions 107 become through slit portions.

As a result, the temperature-sensitive solution held by the temperature-sensitive solution holding layer 121 can move toward the wearer through the openings 109 of the plurality of slit parts 107 of the temperature-sensitive layer 101, and can impart a temperature sensation to the wearer.

When a user wears the pants-type sanitary napkin 1, the temperature-sensitive agent in the temperature-sensitive solution contained in the temperature-sensitive member 7 comes into contact with the skin of the wearer, and the TRP channel at the contact portion of the skin of the wearer with the temperature-sensitive agent can be activated efficiently, thereby efficiently imparting a temperature sensation higher than the body temperature (36 ℃) to the lower abdomen of the wearer.

By giving a temperature sensation to the lower abdomen of the wearer, the TRP channel at the contact site of the skin of the lower abdomen of the wearer with the temperature sensation agent is activated, and as a result, heat is generated from the contact site by the sympathetic nervous system, and it is expected that the temperature of the contact site of the skin of the wearer is increased, and furthermore, the site of the wearer close to the uterus is warmed, and the wearer's physiological pain is alleviated.

In addition, by warming the wearer's portion near the uterus, it is expected to reduce Premenstrual Syndrome (Premenstrual Syndrome), aversion to cold, menopausal disorders, and the like of the wearer.

Fig. 8 and 9 are views for explaining a pants-type sanitary napkin 201 as an absorbent article according to another embodiment of the present disclosure (hereinafter, referred to as "embodiment 2"). Hereinafter, the "pants-type sanitary napkin as the absorbent article according to embodiment 2" may be simply referred to as "pants-type sanitary napkin according to embodiment 2".

Specifically, fig. 8 is an expanded view of the pants-type sanitary napkin 201 according to embodiment 2. Fig. 9 is a partial cross-sectional view of the IX-IX end face of fig. 8.

The pants-type sanitary napkin 201 according to embodiment 2 has a longitudinal direction Lo, a waistline direction Wa, and a thickness direction (not shown) orthogonal to each other. The pants-type sanitary napkin 201 includes a pants-type sanitary napkin main body 203 having an absorber 205, and a temperature-sensitive member 207 disposed on the pants-type sanitary napkin main body 203. The temperature-sensitive member 207 is disposed on the pants-type sanitary napkin main body 203 so as to be disposed at a position corresponding to the lower abdomen of the wearer when the wearer wears the pants-type sanitary napkin 201.

The pants-type sanitary napkin main body 203 (pants-type sanitary napkin 201) is divided into a front waistline region WR along the longitudinal direction Lo_FCrotch region C and back waist region WR_R. The absorber 205 is in the front waistline region WR of the pants-type sanitary napkin main body 3_FCrotch region C and back waist region WR_RIs arranged within the range of (1), and the temperature-sensitive member 207 is arrangedPlaced in the front waistline region WR_F。

Front waistline region WR of pants-type sanitary napkin 201_FThe method comprises the following steps: a1 st liquid-impermeable film 209 disposed on the side closer to the wearer; a 2 nd liquid-impermeable film 211 disposed on the side away from the wearer; and a front side waist belt member 213 disposed along the waistline region WR between the 1 st liquid-impermeable film 209 and the 2 nd liquid-impermeable film 211. The 1 st liquid-impermeable film 209 and the 2 nd liquid-impermeable film 211 are formed of stretchable films that can be stretched in the waistline direction Wa.

Rear waistline region WR of pants-type sanitary napkin 201_RThe method comprises the following steps: a1 st stretch nonwoven fabric 217 disposed on the side closer to the wearer; a 2 nd stretch nonwoven fabric 219 disposed on the side away from the wearer; and a back side waistband member 23 disposed along the waistline region WR between the 1 st stretch nonwoven 217 and the 2 nd stretch nonwoven 219.

Front waistline region WR_FAnd the back waistline region WR_RBy making a front waistline region WR_FThe front side joint parts of the two front side joint parts 215 and the back waistline region WR_RThe respective rear joining portions of the two rear joining portions 223 are joined to form a waistline region WR which can be elongated in the waistline direction Wa.

The temperature-sensitive member 207 includes in order: a temperature-sensitive layer 301 having a skin-side surface 303 and a non-skin-side surface 305; a temperature-sensitive solution holding layer 321 having a skin side surface 323 and a non-skin side surface 325; and a liquid-impermeable layer 327 which is in contact with the clothing. The temperature-sensitive layer 301 and the temperature-sensitive solution holding layer 321 are disposed such that the non-skin side surface 305 of the temperature-sensitive layer 301 is in contact with the skin side surface 323 of the temperature-sensitive solution holding layer 321. The liquid-impermeable layer 327 is in contact with the non-skin side 325 of the temperature-sensitive solution holding layer 321.

In the pants-type sanitary napkin 201 according to embodiment 2, the temperature sensation imparting layer 301 is constituted by the 1 st liquid-impermeable film portion 209p which is a part of the 1 st liquid-impermeable film 209, and the liquid-impermeable layer 327 is constituted by the 2 nd liquid-impermeable film portion 211p which is a part of the 2 nd liquid-impermeable film 211. The 1 st liquid-impermeable film portion 209p and the 2 nd liquid-impermeable film portion 211p sandwich the temperature-sensitive layer 301 therebetween, and their peripheries are fixed by a bonding portion 329 made of an expandable adhesive. In addition, the temperature sensation-imparting layer 301 is not fixed to either of the 1 st liquid-impermeable film portion 209p and the 2 nd liquid-impermeable film portion 211 p.

The 1 st liquid-impermeable film portion 209p includes a plurality of slit portions 307. As shown in fig. 9, each of the plurality of slit portions 307 includes: an opening 309 disposed on the skin side surface 303; a slot bottom 313 disposed between the skin side 303 and the non-skin side 305; and a slot wall 311 connecting the opening 309 and the slot bottom 313. In other words, the plurality of slit portions 307 constitute non-penetrating slit portions, respectively. Thus, when the pants-type sanitary napkin 201 is not worn, the temperature-sensitive solution is less likely to move from the temperature-sensitive member 207 to the outside, for example, to the absorbent body 205. The plurality of slit portions 307 are formed deeper than the plurality of slit portions 107 of embodiment 1. The other portions of the plurality of slit portions 307 are the same as the plurality of slit portions 107 of embodiment 1, and therefore, description thereof is omitted.

The temperature-sensitive solution holding layer 321 is made of an air-laid pulp nonwoven fabric, like the temperature-sensitive solution holding layer 121 of embodiment 1, but has no slit portion.

When a wearer wears the pants-type sanitary napkin 201 by stretching the waist region WR of the pants-type sanitary napkin 201 in the waist direction Wa and then wears the pants-type sanitary napkin 201 in a state in which the waist region WR is stretched, the openings 309 of the plurality of slit portions 307 which are non-through slit portions expand in the waist direction Wa, the openings 309 stretch in the waist direction Wa, the opening area of the openings 309 increases, the slit portions 307 are split in the thickness direction T, the slit bottoms 313 come close to the non-skin side surface 305, and finally, the slit bottoms 313 reach the non-skin side surface 305, and the slit portions 307 become through slit portions.

As a result, the temperature-sensitive solution held by the temperature-sensitive solution holding layer 321 can move toward the wearer through the openings 309 of the plurality of slit parts 307 of the temperature-sensitive layer 301, and can impart a temperature sensation to the wearer.

In the temperature-sensitive member 207, the 1 st liquid-impermeable film portion 209p constituting the temperature-sensitive layer 301 is formed of an elastic film, but since the plurality of slit portions 307 are formed deep, the slit portions of the plurality of slit portions 307 can be torn when the pants-type sanitary napkin 201 is worn.

Further, the temperature-sensitive solution holding layer 121 is made of pulp air-laid nonwoven fabric, has no slit portion, and has no stretchability, but the temperature-sensitive solution holding layer 121 is not fixed to the 1 st liquid-impermeable film section 209p (temperature-sensitive layer 301) and the 2 nd liquid-impermeable film section 211p (liquid-impermeable layer 327), and therefore the stretchability of the temperature-sensitive solution holding layer 121 hardly affects the stretchability of the temperature-sensitive member 207.

Fig. 10 and 11 are views for explaining a disposable diaper 401 as an absorbent article according to still another embodiment of the present disclosure (hereinafter, referred to as "embodiment 3"), and are developed views. Hereinafter, the "disposable diaper as the absorbent article according to embodiment 3" may be simply referred to as the "disposable diaper according to embodiment 3".

The disposable diaper 401 according to embodiment 3 has a longitudinal direction Lo, a waistline direction Wa, and a thickness direction (not shown) orthogonal to each other. The disposable diaper 401 includes a disposable diaper main body 403 provided with an absorber 405, and a temperature-sensitive member 407 disposed on the disposable diaper main body 403. The temperature-sensitive member 407 is disposed on the disposable diaper 401 so as to be disposed at a position corresponding to the lower abdomen of the wearer when the disposable diaper 401 is worn by the wearer.

The disposable diaper main body 403 (disposable diaper 401) is divided into a front waistline region WR along the longitudinal direction Lo_FCrotch region C and back waist region WR_R. The absorber 405 is located in the crotch region C and the back waistline region WR of the disposable diaper main body 403_RIs disposed within the range of (1), and the temperature sensing member 407 is disposed in the front waistline region WR_F。

Front waistline region WR of disposable diaper main body 403_FThe method comprises the following steps: a front-side laminate sheet comprising a front-side stretchable nonwoven fabric 411 disposed on the side closer to the wearer and a front-side nonwoven fabric 413 (specifically, a spunbond nonwoven fabric) disposed on the side farther from the wearer; and a front side belt member 415 disposed along the waistline region WR therebetween. The front side laminate passes as followsForm the formula: a laminate in which the front stretchable nonwoven fabric 411 and the front nonwoven fabric 413 are laminated with the hot melt adhesive interposed therebetween is formed, and then the laminate is subjected to gear stretching. The front side belt member 415 is fixed to a folded portion of the front side laminate sheet, which is folded back with the front side stretch nonwoven 411 facing inward.

Rear waistline region WR of disposable diaper 401_RThe method comprises the following steps: a rear laminate sheet comprising a rear stretchable nonwoven fabric 419 disposed on the side closer to the wearer and a rear nonwoven fabric 421 (specifically, spunbond nonwoven fabric) disposed on the side farther from the wearer; and a rear side waist belt member 423 disposed along the waistline region WR therebetween. The rear-side laminate described above is formed by: a laminate in which the rear stretchable nonwoven fabric 419 and the rear nonwoven fabric 421 are laminated with a hot melt adhesive interposed therebetween is formed, and then the laminate is subjected to gear stretching. The back side belt member 423 is fixed to a folded portion of the back side laminate sheet where the back side stretchable nonwoven fabric 419 is folded back inward. The front nonwoven fabric 413 and the back nonwoven fabric 421 are integrally formed.

Front waistline region WR_FAnd the back waistline region WR_RBy making a front waistline region WR_FFront side joint parts of the two front side joint parts 417 and the back waistline region WR_RThe respective rear joining portions of the two rear joining portions 425 are joined to form a waistline region WR which can be elongated in the waistline direction Wa.

The structure of the disposable diaper main body 403 is well known, and therefore, a detailed description thereof is omitted.

The temperature-sensitive member 407 includes in order: a temperature-sensitive layer 501; a temperature-sensitive solution holding layer (not shown) adjacent to the non-skin side surface (not shown) of the temperature-sensitive layer 501; a liquid impermeable layer (not shown) that is adjacent to the surface of the temperature sensitive solution holding layer (not shown) on the side opposite to the temperature sensitive layer 501 and that is in contact with the garment; and a bonding portion (not shown) that is fixed to the liquid-impermeable layer (not shown) and that attaches the liquid-impermeable layer (not shown) to the disposable diaper 401. The temperature-sensitive layer 501 includes a plurality of slit portions 507.

The structure of the temperature-sensitive member 407 is the same as that of the temperature-sensitive member 7 of embodiment 1, and therefore, description thereof is omitted.

When a wearer wears the disposable diaper 401 by stretching the waistline region WR of the disposable diaper 401 in the waistline direction Wa and then wears the disposable diaper 401 in a state where the waistline region WR is stretched, the openings 509 of the plurality of slit portions 507 which are non-through slit portions expand in the waistline direction Wa, the openings 509 are stretched in the waistline direction Wa, the opening area of the openings 509 becomes large, the slit portions 507 are split in the thickness direction of the disposable diaper 401, and the slit portions 507 become through slit portions.

As a result, the temperature-sensitive solution held by the temperature-sensitive solution holding layer (not shown) can move toward the wearer through the openings 509 of the plurality of slit parts 507 of the temperature-sensitive solution providing layer 501, and can provide a temperature sensation to the wearer.

When the user wears the disposable diaper 401, the temperature sensitive agent in the temperature sensitive solution contained in the temperature sensitive member 407 comes into contact with the skin of the wearer, and the TRP channel at the contact portion of the skin of the wearer with the temperature sensitive agent can be activated efficiently, and a temperature sensitive feeling at a temperature higher than the body temperature (36 ℃) can be imparted efficiently to the lower abdomen of the wearer.

By giving a temperature sensation to the lower abdomen of the wearer, the TRP channel at the contact site of the skin of the lower abdomen of the wearer with the temperature sensitive agent in the temperature sensitive solution is activated, and as a result, heat is generated from the temperature sensitive agent contact site via the sympathetic nervous system, and the temperature at the contact site of the skin of the wearer can be expected to rise.

As a result, when the wearer of the disposable diaper 401 is female, it is expected that: (i) discharging prostaglandin which is a main cause of physiological pain, relaxing muscles such as uterine muscles, and relieving physiological pain; (ii) promoting blood flow, promoting lymph flow, discharging waste, improving cold feeling, and burning fat; (iii) improving immunity, etc.

When the wearer of the disposable diaper 401 is male, it is expected that: (i) expelling prostaglandins, relaxing muscles, and relieving pain; (ii) promoting blood flow, promoting lymph flow, discharging waste, improving cold feeling, and burning fat; (iii) improving immunity, etc.

The temperature sensitive member of the present disclosure may not have extensibility or stretchability as long as the plurality of opening parts of the temperature sensitive layer can release the temperature sensitive solution held by the temperature sensitive solution holding layer when the waistline region of the absorbent article is extended in the waistline direction, but the temperature sensitive member of the present disclosure is preferably extensible or stretchable in the waistline direction. This makes it difficult for the wearer to feel a pulling sensation from the temperature-sensitive member when wearing the absorbent article.

In the temperature-sensitive member of the present disclosure, the temperature-sensitive solution includes a solvent and a temperature-sensitive agent that activates the TRP channel.

The above-mentioned thermosensor is not particularly limited as long as it is a thermosensor that activates a TRP channel, and examples thereof include an agonist against TRPV1 receptor, an agonist against TRPV3 receptor, and the like, and preferably an agonist against TRPV 1. This is because the activation temperature threshold of TRPV1 receptor is as high as over 43 ℃, which imparts a strong feeling of warmth to the wearer.

The temperature sensitive agent is preferably a plant-derived compound from the viewpoint of the feeling of comfort of the wearer. Examples of the temperature sensitive agent include: capsinoids, capsaicinoids, homodihydrocapsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, nonivamide, etc.), capsorubin, benzyl nicotinate, β -butoxyethyl nicotinate, N-acetyl vanillylamide (N- アシルワニルアミド), vanillylnonanamide, polyhydric alcohols, paprika, capsicum tincture, capsicum extract, vanillyl nonanoate, vanillyl alcohol alkyl ether derivatives (e.g., vanillyl alcohol ethyl ether, vanillyl alcohol butyl ether, vanillyl alcohol pentyl ether, vanillyl alcohol hexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratryl alcohol derivatives, substituted benzyl alcohol alkyl ethers, vanillin propylene glycol acetal, ethyl vanillin propylene glycol acetal, ginger extract, ginger oil, gingerol, zingerone, hesperidin and pyrrolidone carboxylic acid, and any combination thereof.

From the viewpoint of making it difficult for the wearer to feel pain, itch, and the like, the warming agent is preferably not capsaicin, and more preferably: vanillyl alcohol alkyl ether derivatives (e.g., vanillyl alcohol ethyl ether, vanillyl alcohol butyl ether, vanillyl alcohol pentyl ether, vanillyl alcohol 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 temperature-sensitive agent, and examples thereof include lipophilic solvents and hydrophilic solvents. The solvent can dissolve or disperse the temperature sensitive agent, for example.

Examples of the lipophilic solvent include oils and fats such as natural oils (e.g., fatty acid esters such as triglycerides, coconut oil, linseed oil, and the like), hydrocarbons (e.g., paraffin, e.g., 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 glycerol; higher alcohols such as octanol, lauryl alcohol, and myristyl alcohol.

From the viewpoint of ease of control of volatility, particularly ease of reduction of volatility, the solvent is preferably an oil or fat (lipophilic solvent) or an alcohol (hydrophilic solvent). In addition, the solvent is preferably a lipophilic solvent from the viewpoint that the temperature-sensitive solution moving from the temperature-sensitive member does not easily hinder the absorbency of the absorbent article when the absorbent article is worn.

The amount of the temperature sensitive agent contained in the temperature sensitive solution varies depending on the type of the temperature sensitive agent, and in general, the temperature sensitive solution preferably contains 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 still more preferably 0.3 to 0.7% by mass of the temperature sensitive agent. This is from the viewpoint of the temperature sensing effect.

In the temperature-sensitive member of the present disclosure, the temperature-sensitive solution may further include at least 1 other component as shown below, in addition to the temperature-sensitive agent and the solvent, within a range that does not inhibit the temperature-sensitive effect on the wearer.

Examples of the at least 1 other component include a cold sensitizer, for example, a cold sensitizer for activating a TRP channel, and examples of the cold sensitizer include an agonist against a TRPM8 receptor, an agonist against a TRPA1 receptor, and the like, and preferably an agonist against a TRPM8 receptor.

Examples of the cold-feeling agent include menthol (e.g., l-menthol) and derivatives thereof (e.g., menthyl lactate, and the like),Glyceryl ethers, e.g./-Glyceryl ethers), methyl salicylate, camphor, essential oils derived from plants (e.g., peppermint, eucalyptus), and the like.

The present inventors have found that when a wearer is given a temperature sensation, the wearer is less likely to feel itchy at the contact site and the peripheral area thereof with the temperature-sensitive solution for a time period until the wearer feels a desired temperature, that is, for a temperature sensation sensing time period, by including the cool-sensitive agent in addition to the temperature-sensitive agent.

In the above case, the temperature-sensitive solution preferably contains 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 still more preferably 0.3 to 0.7% by mass of the cooling agent. This is from the viewpoint that the wearer is less likely to feel itchy during the temperature-sensitive sensing time and is less likely to feel excessive coldness.

In the above case, the temperature-sensitive solution is preferably mixed in a ratio of 20: 1-1: 10. more preferably in the range of 10: 1-1: 5. furthermore, it is further preferable that the ratio of 2: 1-1: the mass ratio of 1 includes the temperature sensitive agent and the cooling agent. This is from the viewpoint that the wearer is less likely to feel itchy during the time of feeling warmth, and is less likely to feel cool and more likely to feel warmth.

Examples of the at least 1 other component include a coolant such as a coolant that lowers the ambient temperature by the heat of vaporization, and examples of the coolant include alcohols such as methanol and ethanol.

Examples of the at least 1 other component include silicone oil, silicone-based resin, and the like.

Examples of the at least 1 other component include antioxidants such as BHT (2, 6-di-tert-butyl-p-cresol), BHA (butyl hydroxyanisole), and propyl gallate.

Examples of the at least 1 other component include vitamins such as natural vitamins and synthetic vitamins. Examples of the vitamins include vitamin B₁Vitamin B₂Vitamin B₃Vitamin B₅Vitamin B₆Vitamin B₇Vitamin B₉Vitamin B₁₂And water-soluble vitamins such as B vitamins and vitamin C.

Examples of the vitamins include fat-soluble vitamins such as a vitamin, D vitamin, E vitamin, and K vitamin.

The vitamins mentioned above further include their derivatives.

Examples of the at least 1 other component include amino acids such as alanine, arginine, lysine, histidine, proline, and hydroxyproline, and peptides.

Examples of the at least 1 other component include natural zeolites such as analcime, chabazite, heulandite, natrolite, zeolite bundle, and mordenite, and zeolites such as synthetic zeolites.

Examples of the at least 1 other component include cholesterol, hyaluronic acid, lecithin, ceramide, placenta, collagen, elastin, squalane, vaseline, trehalose, and the like.

Examples of the at least 1 other component include a skin astringent, an anti-acne agent, an anti-wrinkle agent, an anti-cellulite agent, a whitening agent, an antibacterial agent, and an antifungal agent.

Examples of the skin astringent include zinc oxide, aluminum sulfate, and tannic acid, and oil-soluble skin astringent such as oil-soluble polyphenol. Examples of the oil-soluble polyphenol include natural oil-soluble polyphenols such as phellodendron extract, Hypericum erectum extract, Lampetra brachypus extract, Chamomilla recutita extract, Burdock extract, Salvia officinalis extract, Tilia amurensis extract, Tilia latifolia extract, Betula platyphylla extract, Equisetum arvense extract, Salvia officinalis extract, Juglans regia extract, Hibiscus syriacus extract, Eriobotrya japonica extract, Tilia latifolia extract, Humulus lupulus extract, Aesculus hippocastanum extract, and Coix lacryma-jobi extract.

Examples of the acne-removing agent include salicylic acid, benzoyl peroxide, resorcinol, sulfur, erythromycin, zinc, and the like.

Examples of the anti-wrinkle agent include lactic acid, salicylic acid derivatives, glycolic acid, phytic acid, lipoic acid, and lysophosphatidic acid.

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

Examples of the whitening agent include niacinamide, kojic acid, arbutin, glucosamine and derivatives thereof, phytosterol derivatives, ascorbic acid and derivatives thereof, mulberry extract and placenta extract.

Examples of the at least 1 other component include an anti-inflammatory component, a pH adjuster, an antibacterial agent, a humectant, a perfume, a pigment, a dye, a pigment, a plant extract, and the like. Examples of the anti-inflammatory component include natural anti-inflammatory agents such as peony, scutellaria, hypericum, chamomile, licorice, peach leaf, mugwort, perilla extract, and synthetic anti-inflammatory agents such as allantoin and dipotassium glycyrrhizinate.

Examples of the pH adjuster include substances 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 dioxide.

The temperature-sensitive member of the present disclosure, particularly the temperature-sensitive solution, preferably does not contain a heat generating agent. Thus, the wearer is less likely to suffer low temperature burns. Further, since the temperature sensitive member itself does not generate heat, when the temperature sensitive member is fixed to the absorbent article main body with an adhesive or the like, the adhesive portion is not easily softened, and the temperature sensitive member is not easily detached from the absorbent article main body when the absorbent article is worn.

The heat generating agent is not particularly limited as long as the heat generating agent itself generates heat, and examples thereof include heat generating agents utilizing chemical properties such as the heat of oxidation of metal powder (e.g., iron powder), the heat of neutralization of acid and alkali, and the heat of hydration of inorganic salts.

In the temperature sensitive member of the present disclosure, the temperature sensitive layer is preferably composed of a liquid impermeable film in view of making it difficult to leak the temperature sensitive solution held by the temperature sensitive solution holding layer to the outside of the temperature sensitive member when the absorbent article is not worn. The liquid-impermeable film used as a backsheet in the technical field of absorbent articles can be used without particular limitation, and examples thereof include polyolefin sheets, for example, polyethylene sheets, polypropylene sheets, and the like.

In the case where the temperature-sensitive solution held by the temperature-sensitive solution holding layer contains a highly volatile substance, for example, a highly volatile solvent and/or a highly volatile temperature-sensitive agent, the temperature-sensitive layer may have airtightness. As the temperature-sensitive layer having air-tightness, a laminate film of an air-tight film and the liquid-impermeable film is exemplified. Examples of the air-impermeable film include ethylene-vinyl alcohol copolymers, vinylidene chloride polymers, such as vinylidene chloride methyl acrylate copolymers, polyvinyl alcohol, nylon, such as nylon 6, aluminum foil, and air-impermeable films obtained by vapor deposition of alumina, silica, and the like on a base film (such as polyethylene terephthalate).

In order to improve the feel of the wearer's skin, the temperature-sensitive layer may be a laminate sheet of a fabric (for example, a nonwoven fabric such as spunbond or spunlace) disposed on the skin-side surface and the liquid-permeable film. Examples of the fabric include a fabric similar to the fabric described in the section of the warm-feeling solution holding layer.

The temperature-sensitive layer includes a plurality of opening portions that are capable of releasing a temperature-sensitive solution when the temperature-sensitive member is stretched in the waistline direction and when the waistline region of the absorbent article is stretched in the waistline direction. The plurality of opening portions may penetrate from the skin-side surface to the non-skin-side surface of the temperature-sensitive member in the thickness direction of the temperature-sensitive member. In view of making it difficult to leak the temperature-sensitive solution held in the temperature-sensitive solution holding layer to the outside of the temperature-sensitive member when the absorbent article is not worn, it is preferable that each of the plurality of opening portions does not penetrate from the skin-side surface to the non-skin-side surface of the temperature-sensitive member in the thickness direction of the temperature-sensitive member, that is, does not penetrate through the opening portion.

The non-through hole portion may be disposed so as not to reach the non-skin side surface of the temperature sensation imparting layer from the skin side surface of the temperature sensation imparting layer, or disposed so as not to reach the skin side surface of the temperature sensation imparting layer from the non-skin side surface of the temperature sensation imparting layer.

The depth of the non-through hole opening portion may vary depending on the extensibility of the waistline region of the absorbent article, the extensibility of the temperature-sensitive layer, the breaking property of the material constituting the temperature-sensitive layer, and the like, but the depth of the non-through hole opening portion is preferably 90% or less, more preferably 70% or less, and even more preferably 50% or less with respect to the thickness of the temperature-sensitive layer. The depth of the non-through opening portion is preferably 10% or more, more preferably 20% or more, and still more preferably 30% or more of the thickness of the temperature-sensitive layer. Thus, the temperature-sensitive solution can be held in a state in which it is difficult for the temperature-sensitive solution to migrate, volatilize, or the like from the temperature-sensitive layer to the outside of the temperature-sensitive member when the absorbent article is not worn, and the temperature-sensitive agent held by the temperature-sensitive solution can be released from the temperature-sensitive layer when the absorbent article is worn.

Preferably, each of the plurality of opening portions extends in a direction intersecting the waistline direction in the plane direction of the temperature sensitive member, and more preferably, in a direction orthogonal to the waistline direction, that is, in the longitudinal direction. Thus, when the temperature-sensitive member is stretched in the waistline direction, the area of the opening of each of the plurality of opening portions is increased, and the temperature-sensitive solution held by the temperature-sensitive solution holding layer is easily moved toward the wearer.

Preferably, the plurality of opening portions are intermittently arranged in the waistline direction as follows: for two aperture portions adjacent in the waistline direction, a part of them overlaps in the waistline direction, but the remaining part of them does not overlap. Thus, the temperature-sensitive solution can be held in a state in which it is difficult for the temperature-sensitive solution to move from the temperature-sensitive member to the outside of the temperature-sensitive member or volatilize when the absorbent article is not worn, and the temperature-sensitive layer itself is excellent in stretchability in the waistline direction when the absorbent article is worn.

In the temperature-sensitive member of the present disclosure, the temperature-sensitive solution holding layer is not particularly limited as long as it can hold the temperature-sensitive solution, and is composed of a fabric, for example, a nonwoven fabric, a woven fabric, or a knitted fabric. The fabric is preferably a nonwoven fabric from the viewpoint of ease of production.

Examples of the nonwoven fabric include pulp air-laid nonwoven fabric, through-air nonwoven fabric, spunbond nonwoven fabric, point-bond nonwoven fabric, spunlace nonwoven fabric, needle-punched nonwoven fabric, meltblown nonwoven fabric, and a combination thereof (e.g., SMS).

Examples of the fibers constituting the fabric include natural fibers, synthetic fibers, and semi-synthetic fibers. Examples of the natural fibers include pulp fibers and regenerated cellulose fibers.

Examples of the regenerated cellulose fibers include rayon fibers such as viscose rayon obtained from viscose, high-tenacity fibers and modal fibers, and cuprammonium rayon fibers (also referred to as "Cupra") obtained from a cuprammonium salt solution of cellulose; lyocell (Lyocell) and Tencel (Tencel) which are obtained by an organic solvent spinning method using an organic solvent which is a mixed solution of an organic compound and water and have not undergone a cellulose derivative.

Examples of the semi-synthetic fibers include semi-synthetic cellulose fibers such as acetate fibers including triacetic acid fibers and diacetic acid fibers.

Examples of the synthetic fibers include: hot-melt adhesive fibers such as polyolefin polymers including polyethylene and polypropylene; polyester polymers such as terephthalate polymers including polyethylene terephthalate (PET), polybutylene terephthalate, and polybutylene terephthalate; polyamide polymers such as nylon 6 and nylon 6, 6; an acrylic polymer; a polyacrylonitrile-based polymer; or a modified form thereof, or a fiber formed from a combination thereof or the like.

In the temperature-sensitive member of the present disclosure, the fabric constituting the temperature-sensitive solution holding layer may have hydrophilicity or lipophilicity. The hydrophilic fabric can be formed by: the fabric or the material constituting the fabric (fibers, fiber material, etc.) is treated with a hydrophilizing agent known in the art (for example, the hydrophilizing agent is applied and kneaded). Examples of the hydrophilizing agent include alkyl phosphate ester salts and alkyl phosphate metal salts. Examples of the hydrophilizing agent include alkyl phosphate salts having 10 to 30 carbon atoms and betaine compounds having 10 to 30 carbon atoms, mixtures of sulfate salts and sulfonate salts, and mixtures of alkyl phosphate salts and polyether-modified silicones.

The degree of hydrophilization of the fabric can be adjusted depending on the type, concentration, amount, and the like of the hydrophilizing agent.

The lipophilic fabric can be formed by: the fabric itself or the raw materials (fibers, fiber raw materials, etc.) constituting the fabric are treated with a lipophilic additive known in the art (for example, the lipophilic additive is applied and kneaded). Examples of the lipophilic agent include fatty acid esters (e.g., triglycerides) and hydrocarbons (e.g., linear hydrocarbons).

The degree of oleophilicity of the fabric can be adjusted according to the type, concentration, amount, and the like of the oleophilizing agent.

In the temperature-sensitive member of the present disclosure, the temperature-sensitive solution holding layer may have not only no extensibility in the waistline direction but also extensibility in the waistline direction.

Examples of the temperature-sensitive solution holding layer having no extensibility in the waistline direction include the above-mentioned fabric. The temperature-sensitive solution holding layer having no extensibility in the waistline direction is preferably not joined to the temperature-sensitive layer and the liquid-impermeable layer at 2 or more locations separated in the waistline direction. This is because, when the temperature-sensitive layer and the liquid-impermeable layer are stretched in the waistline direction, the temperature-sensitive solution-retaining layer sometimes hinders the temperature-sensitive layer and the liquid-impermeable layer from being stretched in the waistline direction.

From this viewpoint, the temperature-sensitive solution holding layer having no extensibility in the waistline direction is preferably joined to one or both of the temperature-sensitive layer and the liquid-impermeable layer at a single site, or not joined to both of the temperature-sensitive layer and the liquid-impermeable layer. From the above-described viewpoint, when the temperature-sensitive solution holding layer having no extensibility in the waistline direction is joined to both the temperature-sensitive layer and the liquid-impermeable layer at a single portion, the joined portion to the temperature-sensitive layer and the joined portion to the liquid-impermeable layer preferably overlap in the thickness direction of the temperature-sensitive member.

Examples of the temperature-sensitive solution holding layer having extensibility in the waistline direction include stretchable fabrics, for example, stretchable nonwoven fabrics. Further, as the temperature-sensitive solution holding layer having extensibility in the waistline direction, a fabric including a plurality of through-slit portions can be exemplified.

Preferably, the plurality of through-slit portions each extend in a direction intersecting the waistline direction, and more preferably, the plurality of through-slit portions each extend in a longitudinal direction which is a direction orthogonal to the waistline direction. Thus, when the temperature-sensitive member is stretched in the waistline direction, the area of the opening of each of the plurality of through slit parts is increased, and the temperature-sensitive solution holding member can be stretched in the waistline direction.

Preferably, the plurality of through-slit portions are intermittently arranged in the waistline direction as follows: in the case of two through-slit portions adjacent in the waistline direction, a part of them overlaps in the waistline direction, but the remaining part thereof does not overlap. Thus, the temperature-sensitive solution holding member itself is excellent in stretchability in the waistline direction when the absorbent article is worn.

In the temperature-sensitive member of the present disclosure, 30g/cm of the temperature-sensitive solution holding layer²The thickness under load of (2) is preferably 3g/cm²The thickness under load is 70% or less, more preferably 60% or less, and still more preferably 50% or less. Thereby, the temperature-sensitive member is heatedWhen body pressure is applied, the temperature-sensitive solution holding layer is easily crushed, and the temperature-sensitive solution held by the temperature-sensitive solution holding layer is easily moved to the skin of the wearer through the plurality of opening parts provided in the temperature-sensitive layer.

In the temperature-sensitive member of the present disclosure, 10g/cm of the temperature-sensitive solution holding layer²The thickness under load of (2) is preferably 3g/cm²The thickness under load is 70% or more, more preferably 80% or more, and still more preferably 90% or more. Thus, the temperature-sensitive solution holding layer is less likely to be excessively crushed by the wearing pressure of clothes or the like.

In the present specification, the concentration of the compound is measured at 30g/cm in the following manner²、10g/cm²And 3g/cm²Thickness under load.

(1) At the temperature: 20 ± 5 ℃ and humidity: FS-60DS, manufactured by Kabushiki Seisakusho K.K., 65. + -.5% RH, was prepared in a constant temperature and humidity chamber, and a liquid-permeable sheet (hereinafter referred to as "sample") was left to stand in the constant temperature and humidity chamber for 24 hours.

(2) The thickness of the sample at 10 was measured by changing the position, and the average value of these was used as the thickness of the sample.

The load is adjusted by changing the gauge head. Under the condition of load: 3g/cm²Using the diameter: 44mm gauge head, under load: 10g/cm²Using the diameter: 25mm gauge head, and further, under load: 30g/cm²Using the diameter: 14mm gauge head.

The temperature-sensitive solution holding layer preferably has a thickness of 10g/m²～100g/m²And furthermore preferably 15g/m²～50g/m²Weight per unit area of (c).

In the temperature sensitive member of the present disclosure, the liquid impermeable layer is not particularly limited as long as it can be stretched in the waistline direction and does not allow the temperature sensitive solution to permeate therethrough, and examples thereof include a stretchable film (e.g., a polyurethane film), a laminate of the stretchable film and another film (e.g., a laminate obtained by bonding a stretched stretchable film to another film), and a gear stretch of the laminate.

Examples of the stretchable film include XME99107 Blue flash Elastic manufactured by 3M.

In the case where the temperature-sensitive solution held by the temperature-sensitive solution holding layer contains a relatively volatile substance, for example, contains a relatively volatile solvent and/or a relatively volatile temperature-sensitive agent, the liquid-impermeable layer may also have airtightness. Examples of the liquid-impermeable layer having air-tightness include a laminate film of an air-tight film and the stretchable film (for example, a laminate sheet obtained by bonding an elongated stretchable film to an air-tight film). Examples of the airtight film include those listed as part of the temperature-sensitive layer.

In the temperature sensitive member of the present disclosure, it is preferable that the liquid impermeable layer does not have moisture permeability. Thus, moisture, water vapor, and the like present on the skin of the wearer are difficult to be discharged to the outside of the temperature-sensitive member through the liquid-impermeable layer, and the skin of the wearer is easily kept in a state where mainly the stratum corneum swells, and the temperature-sensitive solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the temperature sensing time is shortened, and the wearer is less likely to feel itchy during the temperature sensing time.

The liquid-impermeable layer preferably has a thickness of 10g/m²～50g/m²And more preferably 15g/m²～30g/m²Weight per unit area of (c).

In the temperature-sensitive member of the present disclosure, the temperature-sensitive solution holding layer or the temperature-sensitive layer composed of the laminate sheet may include fibers selected from the group consisting of heat-generating fibers, heat-insulating fibers, moisture-absorbing fibers, and any combination thereof (hereinafter, may be simply referred to as "functional fibers").

When the temperature-sensitive solution holding layer or the temperature-sensitive layer composed of the laminate sheet contains the predetermined functional fiber, the skin of the wearer is easily swollen mainly with the stratum corneum by moisture due to evaporation, perspiration, or the like of the wearer, and the temperature-sensitive solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the temperature sensing time is shortened, and the wearer is less likely to feel itchy during the temperature sensing time.

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

Examples of the moisture-absorbing and heat-generating fibers include acrylic ester fibers and wool. Examples of the heat-storage fibers include fibers containing a substance (such as zirconium carbide) that absorbs sunlight and converts it into heat energy, and fibers containing carbon. Examples of the far infrared ray radiation fibers include fibers made of ceramics that radiate far infrared rays when heated.

Examples of the heat insulating fibers include hollow fibers and feathers.

Examples of the moisture-absorbing fibers include the natural fibers and semi-synthetic fibers.

Specifically, in the case where the temperature-sensitive member of the present disclosure includes the moisture-absorbing and heat-generating fibers in the temperature-sensitive solution holding layer or the temperature-sensitive layer made of the laminate sheet, when moisture such as evaporation or perspiration is supplied from the skin of the wearer, the moisture-absorbing and heat-generating fibers generate heat, and the wearer is likely to sweat. Then, the skin of the wearer is swollen mainly with the stratum corneum due to the moisture of the wearer's perspiration, and the temperature-sensitive solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the temperature sensing time is shortened, and the wearer is less likely to feel itchy during the temperature sensing time.

In addition, even when the temperature-sensitive solution holding layer or the temperature-sensitive layer composed of the laminate sheet includes heat-accumulating fibers or far-infrared radiation fibers, the wearer is likely to sweat, and the skin of the wearer is swollen mainly with the stratum corneum due to moisture of the sweat of the wearer, and the temperature-sensitive solution is likely to reach the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the temperature sensing time is shortened, and the wearer is less likely to feel itchy during the temperature sensing time.

In the temperature-sensitive member of the present disclosure, in the case where the temperature-sensitive solution holding layer or the temperature-sensitive layer composed of the laminate sheet described above contains heat-insulating fibers, the wearer easily sweats, the skin of the wearer is swollen mainly with the stratum corneum due to the moisture of the sweat of the wearer, and the temperature-sensitive solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the temperature sensing time is shortened, and the wearer is less likely to feel itchy during the temperature sensing time.

In the temperature-sensitive member of the present disclosure, when the temperature-sensitive solution holding layer or the temperature-sensitive layer composed of the laminate sheet contains the hygroscopic fiber, the hygroscopic fiber holds moisture such as evaporation, sweat, and the like of the wearer, and easily swells the skin of the wearer mainly in the stratum corneum, and the temperature-sensitive solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the temperature sensing time is shortened, and the wearer is less likely to feel itchy during the temperature sensing time.

The temperature-sensitive member of the present disclosure may include an additional member, such as an auxiliary sheet, between the temperature-sensitive layer and the temperature-sensitive solution holding layer.

Examples of the material of the auxiliary sheet include those listed as a fabric constituting the temperature-sensitive solution holding layer.

The temperature-sensitive member of the present disclosure may include an adhesive portion for fixing the temperature-sensitive member to an absorbent article, and examples of the adhesive that can form the adhesive portion include a hot-melt adhesive, such as a pressure-sensitive adhesive or a heat-sensitive adhesive mainly composed of a rubber system such as styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS), or styrene-isoprene-styrene (SIS), or mainly composed of an olefin system such as linear low-density polyethylene; and water-sensitive adhesives comprising a water-soluble polymer (e.g., polyvinyl alcohol, carboxymethyl cellulose, gelatin, etc.) or a water-swellable polymer (e.g., polyvinyl acetate, sodium polyacrylate, etc.).

The pressure-sensitive adhesive portion and the pressure-sensitive adhesive capable of forming the pressure-sensitive adhesive portion preferably have extensibility or stretchability, and examples of the pressure-sensitive adhesive having extensibility or stretchability include JM-5332 manufactured by Fuller corporation.

The adhesive part may be obtained by intermittently disposing a hot-melt adhesive having no stretchability, which is generally used in the art, on the liquid-impermeable layer of the temperature-sensitive member, and may be obtained by, for example, (i) dot-shaped adhesive parts, (ii) dot-shaped adhesive parts intermittently disposed in the longitudinal direction, or (iii) linear adhesive parts extending in the longitudinal direction, intermittently disposed in the waistline direction.

The above-described adhesive part and adhesive agent can also be used for joining of materials constituting the temperature-sensitive member, such as joining of the temperature-sensitive layer and the liquid-impermeable layer (e.g., Round seal), joining of the temperature-sensitive layer and/or the liquid-impermeable layer of the temperature-sensitive solution-retaining layer, and the like.

The absorbent article of the present disclosure is preferably packaged with a packaging sheet, for example, individually packaged before use, but the temperature-sensitive solution held by the temperature-sensitive solution holding layer may not be packaged with an airtight packaging sheet because the temperature-sensitive solution is held by the temperature-sensitive layer of the temperature-sensitive member and the liquid-impermeable layer.

Examples of the material of the packaging sheet include polyolefin polymers such as polyethylene and polypropylene. From the viewpoint of improving the airtightness of the individual package, the package sheet may include an inner liner, and examples of the material of the inner liner include ethylene-vinyl alcohol copolymers, vinylidene chloride polymers, such as vinylidene chloride methyl acrylate copolymers, polyvinyl alcohol, nylon, such as nylon 6, aluminum foil, and materials obtained by vapor deposition of alumina, silica, and the like on a base film (polyethylene terephthalate or the like).

The absorbent article of the present disclosure is not particularly limited as long as it has a waistline region and an absorber, and examples thereof include a pants-type sanitary napkin, a disposable diaper, and the like.

< use of temperature-sensitive member and attachment of temperature-sensitive member to absorbent article >

The present disclosure also relates to a temperature-sensitive member used by being attached to an absorbent article, and a use of the temperature-sensitive member attached to the absorbent article.

The structures of the temperature-sensitive member and the absorbent article are explained in the section of "absorbent article", and therefore, explanation thereof is omitted here.

The region of the absorbent article to which the temperature sensitive member is to be bonded is not particularly limited as long as the region is stretched when the absorbent article is worn as compared to when the absorbent article is not worn, and can be bonded to any region of the absorbent article.

The waist region of the absorbent article having a waist region that can be extended in the waist direction is preferable as the region to which the temperature sensitive member should be attached of the absorbent article. This is because the waistline region has a higher elongation degree when worn than when not worn, and therefore the plurality of opening portions of the temperature-sensitive layer of the temperature-sensitive member easily release the temperature-sensitive solution.

Description of the reference numerals

< embodiment 1 >

1. Pants-type sanitary napkins; 3. a pants-type sanitary napkin main body; 5. an absorbent body; 7. a temperature-sensitive member; 11. a front-side stretchable nonwoven fabric; 13. a front side nonwoven fabric; 15. a front side waistband member; 17. a front-side joining part; 19. a rear stretchable nonwoven fabric; 21. a rear side nonwoven fabric; 23. a rear side waist belt member; 25. a rear side joint part; 101. a temperature-sensitive layer; 103. the side of the skin; 105. the non-skin side; 107. a slot portion; 109. an opening; 111. sewing the walls of the slot; 113. the bottom of the slot; 121. a temperature-sensitive solution-retaining layer; 123. the side of the skin; 125. the non-skin side; 127. through the slot part; 131. a liquid impermeable layer; 133. an adhesive portion; 133p, an adhesive portion; wa, lumbar direction; lo, length direction; t, the thickness direction; WR, waist region; WR (pulse Width modulation)_FA front waistline region; WR (pulse Width modulation)_RA back waistline region; C. the crotch region.