CN112334101B

CN112334101B - Absorbent article

Info

Publication number: CN112334101B
Application number: CN201980043648.8A
Authority: CN
Inventors: 松井纱惠子; 山本成海; 野田祐树; 林俊久; 内田祥平
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2018-06-29
Filing date: 2019-07-01
Publication date: 2022-08-23
Anticipated expiration: 2039-07-01
Also published as: WO2020004669A1; CN112334101A; KR20210021993A; JP7101774B2; KR102518885B1; JPWO2020004669A1

Abstract

An object of the present disclosure is to provide an absorbent article that can make the lower abdomen of a wearer feel warm and that is less likely to make the lower abdomen of the wearer feel itchy when used. The absorbent article has the following structure. An absorbent article (1) comprising an absorbent body (3) and a temperature-sensitive body (5) configured to come into contact with the lower abdomen of a wearer, characterized in that the absorbent article (1) has a structure (a) or a structure (b): (a) the temperature-sensitive body (5) is provided with a temperature-sensitive sheet (13), the stiffness of a temperature-sensitive sheet overlapping portion (25) overlapping the temperature-sensitive sheet (13) of the temperature-sensitive body (5) in the thickness direction (T) is lower than the stiffness of an absorbent body overlapping portion (27) overlapping the absorbent body (11) of the absorbent body (3) in the thickness direction (T), (b) the temperature-sensitive body (5) holds the 1 st temperature-sensitive agent, and the absorbent body (3) holds the 2 nd temperature-sensitive agent.

Description

Absorbent article

Technical Field

The present disclosure relates to an absorbent article.

Background

Absorbent articles containing functional agents such as a temperature sensitive agent are known.

For example, patent document 1 describes a functional article, such as an absorbent article, including a functional layer and an adhesive layer, for the purpose of suppressing the adhesive layer from remaining on the skin surface or underwear of a wearer when the functional article is removed while maintaining the effect of the functional layer.

The functional article described in patent document 1 has the following structure.

The functional article includes: a base material having a skin contact surface and a non-skin contact surface on the side opposite to the skin contact surface; and an adhesive layer formed on the skin contact surface or the non-skin contact surface of the base material, wherein the functional article includes a functional layer having a predetermined function along the skin contact surface at a position on the skin contact surface side of the base material with respect to the non-skin contact surface, the functional layer includes a functional agent containing a lipophilic component, and the functional layer and the adhesive layer are formed at positions where at least a part of the functional layer and the adhesive layer do not overlap in a thickness direction of the functional article and at least a part of the adhesive layer and the functional layer do not overlap in the thickness direction of the functional article.

Documents of the prior art

Patent document

Patent document 1: japanese utility model registration No. 3213494

Disclosure of Invention

Problems to be solved by the invention

In the functional article described in patent document 1, specifically, the absorbent article, the functional layer can provide a feeling of warmth to the lower abdomen of the wearer, but the functional layer gives the lower abdomen of the wearer a feeling of hardness, and the wearer easily feels a feeling of discomfort, and as a result, the wearer may easily feel itching in the lower abdomen.

In addition, in the functional article described in patent document 1, specifically, the absorbent article, the functional layer can impart a temperature to the lower abdomen of the wearer and can impart a temperature to the lower abdomen of the human body, thereby expecting various effects such as alleviation of physiological pain, alleviation of Premenstrual Syndrome (Premenstrual Syndrome), cold Syndrome, and alleviation of climacteric disorder.

On the other hand, the inventors of the present application found that: when a temperature sensitive agent is used to impart a temperature to the lower abdomen of a wearer, the temperature sensitive agent is less likely to penetrate into the skin due to the thickness of the barrier layer, fat layer, or the like of the skin of the lower abdomen, and as a result, the effect of the temperature sensitive agent on the wearer is delayed, and the wearer is likely to feel itching in the lower abdomen.

Accordingly, an object of the present disclosure is to provide an absorbent article that can make the lower abdomen of a wearer feel warm and that is less likely to make the lower abdomen of the wearer feel itchy when used.

Means for solving the problems

The present inventors have found that an absorbent article having a longitudinal direction, a width direction, and a thickness direction, comprising an absorbent body and a temperature-sensitive body, the absorbent body comprising a liquid-permeable sheet, a liquid-impermeable sheet, and an absorbent body disposed between the liquid-permeable sheet and the liquid-impermeable sheet, the temperature-sensitive body being configured to abut against the lower abdomen of a wearer, the absorbent article being characterized by having the following structure (a) or structure (b): (a) the temperature-sensitive body includes a temperature-sensitive sheet, and a superposed portion of the temperature-sensitive sheet superposed on the temperature-sensitive sheet of the temperature-sensitive body in the thickness direction has a lower stiffness than a superposed portion of the temperature-sensitive sheet superposed on the absorbent body of the absorbent body in the thickness direction, (b) the temperature-sensitive body holds a1 st temperature-sensitive agent, and the absorbent body holds a2 nd temperature-sensitive agent.

ADVANTAGEOUS EFFECTS OF INVENTION

The absorbent article of the present disclosure can make the lower abdomen of the wearer feel warm when used, and is less likely to make the lower abdomen of the wearer feel itching.

Drawings

Fig. 1 is a plan view of a sanitary napkin 1 according to embodiments 1 and 5.

Fig. 2 is an exploded perspective view of the sanitary napkin 1.

Fig. 3 is a diagram for explaining the 1 st temperature-sensitive composition 17 disposed in the temperature-sensitive body 5 and the 2 nd temperature-sensitive composition 19 disposed in the absorption body 3.

Fig. 4 is a view showing a state in which the sanitary napkin 1 is worn.

Fig. 5 is a diagram for explaining a pants-type sanitary napkin 201 according to embodiment 2.

Fig. 6 is a diagram for explaining a disposable diaper 301 according to embodiment 3.

Fig. 7 is a diagram for explaining a sanitary napkin 1 according to embodiment 4.

Fig. 8 is a diagram for explaining a pants-type sanitary napkin 201 according to embodiment 6.

Detailed Description

[ definitions ]

< Structure (a) >

'absorption body' and 'temperature-sensing body'

In the present specification, "an absorbent body" and "a temperature-sensitive body" are divisions of an absorbent article, and a region overlapping with an absorbent body in a longitudinal direction of the absorbent article is referred to as "the absorbent body", and a region of the absorbent article forward of the absorbent body is referred to as "the temperature-sensitive body".

The absorbent article is an article in an unfolded state. For example, in the case of individually packaged sanitary napkins, the sanitary napkin in an unfolded state is a sanitary napkin in an unfolded state, and in the case of a pants-type disposable diaper, for example, the pants-type disposable diaper in an unfolded state is a pants-type disposable diaper in which the joint between both side portions is broken and becomes flat.

'warming agent'

In the present specification, the term "temperature" of the "temperature sensitive agent" means to make the skin of the wearer feel warm, and the "temperature sensitive agent" means an agent that makes the skin of the wearer feel warm, preferably an agent that activates the TRP channel of the wearer.

'body for feeling temperature' and 'tablet for giving feeling temperature'

In the present specification, the terms "temperature" of the "temperature-sensitive body" and "temperature-sensitive sheet" mean that the skin of the wearer feels warm, as with the term "temperature-sensitive agent", and may include (i) a temperature-sensitive agent that causes the skin of the wearer to feel warm, (ii) a substance that causes the skin of the wearer to feel warm by holding the body temperature of the wearer, for example, a heat-retaining sheet, and (iii) a substance that causes the skin of the wearer to feel warm by supplying heat, for example, a heat-generating body.

< Structure (b) >

'absorption body' and 'temperature-sensitive body'

Specifically, the present disclosure relates to the following aspects.

[ means 1]

An absorbent article having a longitudinal direction, a width direction and a thickness direction, comprising an absorbent main body and a temperature-sensitive main body, the absorbent main body comprising a liquid-permeable sheet, a liquid-impermeable sheet and an absorbent body disposed between the liquid-permeable sheet and the liquid-impermeable sheet, the temperature-sensitive main body being configured to abut against the lower abdomen of a wearer,

the absorbent article has the following structure (a) or structure (b):

(a) the temperature-sensitive body includes a temperature-sensitive sheet, and a superposed portion of the temperature-sensitive sheet superposed on the temperature-sensitive sheet of the temperature-sensitive body in the thickness direction has a lower stiffness than a superposed portion of the absorbent body superposed on the absorbent body of the absorbent body in the thickness direction,

(b) the temperature-sensitive body holds a1 st temperature-sensitive agent, and the absorption body holds a2 nd temperature-sensitive agent.

By giving a feeling of warmth to the lower abdomen of a human, various effects such as alleviation of physiological pain, alleviation of Premenstrual Syndrome (Premenstrual Syndrome), cold Syndrome, alleviation of climacteric disorder, and the like can be expected. In order to impart a temperature sensation to the lower abdomen of a person using an absorbent article, it is conceivable to dispose a temperature sensation imparting sheet in a portion of the absorbent article corresponding to the lower abdomen of the person, for example.

On the other hand, since there are pubic hairs in the lower abdomen of the person and the lower abdomen moves in accordance with breathing when the person breathes, when the temperature sensation imparting sheet having high rigidity is disposed in a portion corresponding to the lower abdomen of the person, the wearer tends to feel hardness in the portion corresponding to the lower abdomen of the garment including the absorbent article. This makes it easy for the wearer to feel uncomfortable in the lower abdominal portion of the garment including the absorbent article, and also makes the wearer feel itching in the lower abdominal portion. Further, since the wearer feels a sense of discomfort in the lower abdominal portion of the clothing including the absorbent article, the wearer recognizes that the frequency of the lower abdominal portion is increased, and even if the lower abdominal portion is weakly itchy due to contact of the pubic hair with the warming sheet or the like, the wearer is likely to perceive the feeling, and the wearer is likely to feel a sense of discomfort in the lower abdominal portion.

In the case where the absorbent article satisfies the configuration (a), the temperature-sensitive sheet overlapping portion and the absorbent body overlapping portion have a predetermined stiffness, and therefore the absorbent article can provide a wearer with a temperature sensation in the lower abdomen during use of the absorbent article, and is less likely to provide a wearer with a feeling of discomfort in the lower abdomen. As a result, the wearer recognizes that the frequency of the lower abdomen is reduced, and the lower abdomen is less likely to be itched by contact of the pubic hairs with the warming sheet, and the like, and even when weak itching occurs in the lower abdomen, the wearer is less likely to feel discomfort with respect to the weak itching in the lower abdomen.

Further, by giving a feeling of warmth to the lower abdomen of a human, various effects such as alleviation of physiological pain, alleviation of Premenstrual Syndrome (Premenstrual Syndrome), cold Syndrome, alleviation of climacteric disorder, and the like can be expected. The temperature sensitive agent is less likely to cause a problem such as low-temperature burn to the wearer than a heating element such as iron powder.

The inventor of the application finds that: a temperature sensitive article (e.g., an absorbent article) containing a temperature sensitive agent is preferable in that it is less likely to cause a problem such as low-temperature burn than a heat-generating article containing a heat-generating element (e.g., iron powder), but the temperature sensitive article containing a temperature sensitive agent tends to have a longer time until a desired temperature is sensed (a temperature sensing time) than a heat-generating article containing a heat-generating agent (e.g., iron powder), and the wearer tends to feel itchiness during the temperature sensing time.

Further, the inventors of the present application found that: as a result, the warm feeling time tends to be longer than that of the skin having a thin fat layer, and the fat layer of the excretory opening of the human body is thin, so that the warm feeling agent tends to easily reach the TRP channel of the skin.

In the case where the absorbent article satisfies the configuration (b), the temperature-sensitive body retains the 1 st temperature-sensitive agent and the absorbent body retains the 2 nd temperature-sensitive agent, so that the absorbent article can feel a temperature sensation in the lower abdomen of the wearer during use of the absorbent article, and is less likely to feel itching in the lower abdomen of the wearer.

[ means 2]

The absorbent article according to mode 1, wherein the absorbent article has a structure (a) in which the thickness of the temperature sensation imparting sheet is smaller than the thickness of the absorbent body.

In the absorbent article, the temperature-sensitive sheet has a predetermined thickness, and therefore, the absorbent article can make the lower abdomen of the wearer feel a temperature and is less likely to make the lower abdomen of the wearer feel a sense of discomfort when the absorbent article is used.

[ means 3]

The absorbent article according to mode 1 or 2, wherein the absorbent article has a structure (a), and the temperature-sensitive material is further held by the temperature-sensitive sheet.

In the absorbent article, the temperature-sensitive agent is held by the temperature-sensitive sheet, and therefore, the wearer's lower abdomen can be easily and reliably made to feel a temperature when the absorbent article is used.

[ means 4]

The absorbent article according to any one of aspects 1 to 3, wherein the absorbent article has a structure (a) in which the temperature sensing body is divided into a temperature sensing body central portion overlapping the temperature sensing piece in the thickness direction and a temperature sensing body peripheral portion not overlapping the temperature sensing piece in the thickness direction, and the rigidity of the temperature sensing body peripheral portion is lower than the rigidity of the temperature sensing body central portion.

In the absorbent article, since the peripheral portion of the temperature sensitive body and the central portion of the temperature sensitive body have predetermined rigidity, the wearer's lower abdomen is less likely to feel uncomfortable when the absorbent article is used.

[ means 5]

The absorbent article according to any one of aspects 1 to 4, wherein the absorbent article has a structure (a) in which the temperature-sensitive body is divided into a temperature-sensitive body central portion overlapping with the temperature-sensitive sheet in the thickness direction and a temperature-sensitive body peripheral portion not overlapping with the temperature-sensitive sheet in the thickness direction, and the temperature-sensitive body peripheral portion includes embossed portions disposed intermittently along the temperature-sensitive body peripheral portion in the liquid-permeable sheet and the liquid-impermeable sheet.

In the absorbent article, since the peripheral edge portion of the temperature sensitive body includes the predetermined embossed portion, the wearer's lower abdomen is less likely to feel uncomfortable when the absorbent article is used.

[ means 6]

The absorbent article according to mode 3, wherein the absorbent article has a structure (a) and the absorption body holds a temperature sensitive agent.

Further, the present inventors found that: as a result, the warm feeling time tends to be longer than that of the skin having a thin fat layer, and the fat layer of the excretory opening of the human body is thin, so that the warm feeling agent tends to easily reach the TRP channel of the skin.

In the absorbent article, since both the temperature-sensitive body and the absorption body hold the temperature-sensitive agent, the absorbent article can make the lower abdomen of the wearer feel a temperature and is less likely to make the lower abdomen of the wearer feel itching when the absorbent article is used.

[ means 7]

The absorbent article according to mode 6, wherein the absorbent article has a structure (a) in which the absorbent body includes an excretion portion contact region, and the absorbent body holds the temperature sensitive agent outside the excretion portion contact region in the width direction.

In the absorbent article, the absorbent body holds the temperature sensitive agent at a predetermined position, and therefore the absorbent article can easily make the lower abdomen of the wearer feel a temperature feeling and can hardly make the lower abdomen of the wearer feel itching when the absorbent article is used.

[ means 8]

The absorbent article according to mode 7, wherein the absorbent article has a structure (a) in which the absorbent body holds the temperature sensitive agent in the absorbent body.

In the absorbent article, the absorbent body holds the temperature sensitive agent in the absorbent body, so that the temperature sensitive agent easily permeates into the wearer from the absorbent body to which pressure is easily applied when the absorbent article is worn, and further, the lower abdomen of the wearer can be made to feel a temperature when the absorbent article is used, and itching is not easily felt in the lower abdomen of the wearer.

[ means 9]

The absorbent article according to mode 7 or 8, wherein the absorbent article has a structure (a) in which the absorbent body holds the temperature sensitive agent between the liquid-permeable sheet and the impermeable sheet.

In the absorbent article, since the 2 nd temperature sensitive agent is held between the liquid-permeable sheet and the impermeable sheet by the absorbent body, the 2 nd temperature sensitive agent hardly hinders absorption by the absorbent body, and it is easy to move the 2 nd temperature sensitive agent held between the liquid-permeable sheet and the impermeable sheet to the absorbent body and further move the 2 nd temperature sensitive agent from the absorbent body to the wearer after the 2 nd temperature sensitive agent held by the absorbent body has moved to the wearer. As a result, when the absorbent article is used, the wearer's lower abdomen can be made to feel warm and the wearer's lower abdomen is made less likely to feel itching.

[ means 10]

The absorbent article according to any one of aspects 6 to 9, wherein the absorbent article has a structure (a) in which the weight per unit area of the temperature sensitive agent held by the temperature sensitive body is smaller or larger than the weight per unit area of the temperature sensitive agent held by the absorbent body.

In the absorbent article, when the weight per unit area of the temperature sensitive agent held by the temperature sensitive body is smaller than the weight per unit area of the temperature sensitive agent held by the absorption body, the wearer's lower abdominal region (particularly, the portion of the wearer that contacts the absorption body) can be easily made to feel a temperature feeling and the wearer's lower abdominal region (particularly, the portion of the wearer that contacts the absorption body) can be made to hardly feel itch when the absorbent article is used.

In the absorbent article, when the weight per unit area of the temperature sensitive agent held by the temperature sensitive body is larger than the weight per unit area of the temperature sensitive agent held by the absorbent body, the lower abdomen of the wearer (particularly, the portion of the wearer that contacts the absorbent body) is less likely to feel itching and the lower abdomen of the wearer (particularly, the portion of the wearer that contacts the absorbent body) is more likely to feel a strong temperature when the absorbent article is used, and the absorbency of the absorbent article is less likely to be impaired.

[ means 11]

The absorbent article according to mode 1, wherein the absorbent article has a structure (b) in which the absorbent body includes an excretion portion contact region, and the absorbent body holds the 2 nd temperature sensitive agent outside the excretion portion contact region in the width direction.

In the absorbent article, the 2 nd temperature sensitive agent is held at a predetermined position by the absorption body, and therefore the absorbent article can easily make the lower abdomen of the wearer feel a temperature feeling and can hardly make the lower abdomen of the wearer feel itching when the absorbent article is used.

[ means 12]

The absorbent article according to mode 11, wherein the absorbent article has a structure (b) in which the absorption body holds the 2 nd temperature sensitive agent in the absorption body.

In the absorbent article, since the 2 nd temperature sensitive agent is held in the absorber by the absorption body, the 2 nd temperature sensitive agent is easily permeated into the wearer from the absorber to which a pressure is easily applied when the absorbent article is worn, and further, the wearer can feel a feeling of warmth in the lower abdomen when the absorbent article is used, and the wearer is less likely to feel itching in the lower abdomen.

[ means 13]

The absorbent article according to mode 11 or 12, wherein the absorbent article has a structure (b) in which the absorption body holds the 2 nd temperature sensitive agent between the liquid-permeable sheet and the impermeable sheet.

In the absorbent article, since the 2 nd temperature sensitive agent is held between the liquid-permeable sheet and the impermeable sheet by the absorbent body, the 2 nd temperature sensitive agent hardly hinders absorption by the absorbent body, and the 2 nd temperature sensitive agent held between the liquid-permeable sheet and the impermeable sheet is easily moved to the absorbent body after the 2 nd temperature sensitive agent held by the absorbent body is moved to the wearer, and the 2 nd temperature sensitive agent is easily moved from the absorbent body to the wearer. As a result, the wearer's lower abdomen can be made to feel warm when using the absorbent article, and itching in the wearer's lower abdomen is less likely to be felt.

[ means 14]

The absorbent article according to any one of aspects 1 and 11 to 13, wherein the absorbent article has a structure (b), the temperature-sensitive body includes the liquid-permeable sheet, the liquid-impermeable sheet, and an auxiliary sheet disposed between the liquid-permeable sheet and the liquid-impermeable sheet, and the temperature-sensitive body holds the 1 st temperature-sensitive agent in the auxiliary sheet.

In the absorbent article, since the temperature-sensitive main body holds the 1 st temperature-sensitive agent on the auxiliary sheet disposed between the liquid-permeable sheet and the liquid-impermeable sheet, the 1 st temperature-sensitive agent held by the auxiliary sheet is less likely to move to other parts of the absorbent article during storage, and the 1 st temperature-sensitive agent held by the auxiliary sheet is likely to move to the skin of the wearer during use.

[ means 15]

The absorbent article according to any one of aspects 1 and 11 to 14, wherein the absorbent article has a structure (b) in which the weight per unit area of the 1 st temperature-sensitive agent held by the temperature-sensitive body is smaller or larger than the weight per unit area of the 2 nd temperature-sensitive agent held by the absorbent body.

In the absorbent article, when the weight per unit area of the 1 st temperature-sensitive agent held by the temperature-sensitive body is smaller than the weight per unit area of the 2 nd temperature-sensitive agent held by the absorbent body, the wearer's lower abdomen (particularly, the portion of the wearer that contacts the absorbent body) can be more easily made to feel warm and the wearer's lower abdomen (particularly, the portion of the wearer that contacts the absorbent body) can be less easily made to feel itchiness when the absorbent article is used.

In the absorbent article, when the weight per unit area of the 1 st temperature-sensitive agent held by the temperature-sensitive body is larger than the weight per unit area of the 2 nd temperature-sensitive agent held by the absorbent body, the lower abdomen of the wearer (particularly, the portion of the wearer that contacts the absorbent body) is less likely to feel itching and the lower abdomen of the wearer (particularly, the portion of the wearer that contacts the absorbent body) is more likely to feel strong temperature when the absorbent article is used, and the absorbency of the absorbent article is less likely to be impaired.

[ means 16]

The absorbent article according to any one of aspects 1 to 15, wherein the liquid-permeable sheet comprises a material selected from the group consisting of a heat-generating material, a heat-insulating material, a moisture-absorbing material, and any combination thereof.

In the absorbent article, since the liquid-permeable sheet contains a predetermined material, the skin, mainly the stratum corneum, of the wearer is swollen by moisture due to moisture evaporation, sweat, or the like from the wearer, and the warming agent easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the warm feeling time is shortened, and the wearer is less likely to feel itching during the warm feeling time.

< Structure (a) >, and

hereinafter, the absorbent article of the present disclosure will be described in detail.

Fig. 1 to 4 are views for explaining a sanitary napkin 1 as an absorbent article according to an embodiment of the present disclosure (hereinafter, referred to as "embodiment 1"). Hereinafter, the "sanitary napkin as the absorbent article according to embodiment 1" may be simply referred to as the "sanitary napkin according to embodiment 1". Specifically, fig. 1 is a plan view of a sanitary napkin 1 according to embodiment 1. Fig. 2 is an exploded perspective view of the sanitary napkin 1. Fig. 3 is a diagram for explaining the 1 st temperature-sensitive composition 17 disposed in the temperature-sensitive body 5 and the 2 nd temperature-sensitive composition 19 disposed in the absorption body 3. Fig. 4 is a view showing a state in which the sanitary napkin 1 is worn.

The sanitary napkin 1 according to embodiment 1 has a longitudinal direction L, a width direction W, and a thickness direction T which are orthogonal to each other, and includes an absorbent body 3 and a temperature-sensitive body 5 disposed in front of the absorbent body 3 in the longitudinal direction L. The sanitary napkin 1 includes a liquid-permeable sheet 7 that comes into contact with the skin of the wearer when worn, a liquid-impermeable sheet 9 that comes into contact with the garment 151 when worn, and an absorbent body 11 disposed between the liquid-permeable sheet 7 and the liquid-impermeable sheet 9 in the absorbent body 3. The sanitary napkin 1 further includes a liquid-permeable sheet 7 that comes into contact with the skin of the wearer when worn, a liquid-impermeable sheet 9 that comes into contact with the garment 151 when worn, and a temperature-sensitive sheet 13 disposed between the liquid-permeable sheet 7 and the liquid-impermeable sheet 9 in the temperature-sensitive body 5.

The liquid-permeable sheet 7 of the absorption body 3 and the liquid-permeable sheet 7 of the temperature-sensitive body 5 are formed of an integrated nonwoven fabric. Specifically, the liquid-permeable sheet 7 of the absorption body 3 and the liquid-permeable sheet 7 of the temperature-sensitive body 5 are constituted by a liquid-permeable sheet 7a extending in the longitudinal direction L and disposed at the center in the width direction W, a liquid-permeable sheet 7b extending in the longitudinal direction L and disposed at the left side in the width direction W, and a liquid-permeable sheet 7c extending in the longitudinal direction L and disposed at the right side in the width direction W.

Further, the liquid-impermeable sheet 9 of the absorbent body 3 and the liquid-impermeable sheet 9 of the temperature-sensitive body 5 are also formed of an integrated synthetic resin film. Further, a part of the absorbent body 11 of the absorbent body 3 and a part of the temperature-sensitive sheet 13 of the temperature-sensitive body 5 are partially overlapped in the thickness direction T at the overlapping portion 15, and the absorbent body 11 is disposed at a position closer to the liquid-permeable sheet 7 than the temperature-sensitive sheet 13 at the overlapping portion 15.

The sanitary napkin 1 includes the adhesive part 101 for fixing the sanitary napkin 1 to the clothing 151 of the wearer in both the absorption body 3 and the temperature-sensitive body 5. One surface of the adhesive part 101 is fixed to the liquid-impermeable sheet 9, and the other surface is temporarily fixed to the inner surface of the package sheet 103 to which a peeling property is imparted.

The sanitary napkin 1 includes a pair of flap portions 105 for fixing the sanitary napkin 1 to the garment 151, a plurality of through holes 107 penetrating the liquid-permeable sheet 7 and the absorbent body 11, and an embossed portion 109 formed by compressing the liquid-permeable sheet 7 and the absorbent body 11 in the absorbent body 3, and these members are well known in the art, and therefore, the description thereof is omitted.

The sanitary napkin 1 includes the embossed portion 111 formed by compressing the liquid-permeable sheet 7 and the temperature-sensitive sheet 13 in the temperature-sensitive main body 5, but the embossed portion itself is well known in the art, and therefore, the description thereof is omitted.

The sanitary napkin 1 includes the sealing portion 113 formed by compressing the periphery (specifically, the liquid-permeable sheet 7 and the liquid-impermeable sheet 9) of the sanitary napkin 1 in both the absorption body 3 and the temperature-sensitive body 5, but the sealing portion itself is well known in the art, and therefore, the description thereof is omitted.

The sanitary napkin 1 is folded along the longitudinal direction 1-fold axis F extending in the longitudinal direction L together with the package sheet 103 in an unused state ₁ And a length direction 2 nd folding axis F ₂ And a width direction 1 st folding axis F extending in the width direction W ₃ And a width direction 2 nd folding axis F ₄ The sanitary napkin 1 is folded on the reference axis to form an individual package (not shown). In addition, the 1 st folding axis F in the width direction ₃ And a width direction 2 nd folding axis F ₄ Are respectively arranged at the front and the rear of the sanitary napkin 1.

Longitudinal 1 st fold axis F ₁ And a length direction 2 nd folding axis F ₂ The sanitary napkin 1 and the wrapping sheet 103 are arranged along the side edge (not shown) of the absorbent body 11 in the unfolded state. Further, the 1 st fold axis F in the width direction ₃ The sanitary napkin 1 and the package sheet 103 are arranged along the boundary between the absorption body 3 and the temperature-sensitive body 5 in the unfolded state, and the 2 nd folding axis F in the width direction ₄ Are disposed rearward of the pair of fin portions 105.

The individual package (not shown) of the sanitary napkin 1 is formed by: the sanitary napkin 1 and the packaging sheet 103 are folded along the longitudinal 1 st fold axis F ₁ And a length direction 2 nd folding axis F ₂ A first folding axis F in the longitudinal direction 1 with the sanitary napkin 1 as a reference axis inside ₁ And a length direction 2 nd fold axisF ₂ In the width direction W, followed by the 1 st fold axis F in the width direction ₃ And a width direction 2 nd folding axis F ₄ A2 nd folding axis F in the width direction with the sanitary napkin 1 as a reference axis so as to be positioned inside ₄ And a width direction 1 st fold axis F ₃ The sequence of (2) is folded in the longitudinal direction L and the individual packages are secured by the sheet 115.

The sanitary napkin 1 has the absorption body 3 and the temperature-sensitive body 5 in such a manner that when the sanitary napkin 1 is disposed on the clothing 151 such that the excretory opening contact region 21 of the absorbent body 11 of the absorption body 3 is in contact with the excretory opening of the wearer, the temperature-sensitive body 5, particularly the temperature-sensitive sheet 13, is disposed at a position corresponding to the lower abdomen of the wearer. In other words, the distance between the excretory opening contact region 21 of the absorbent body 11 of the absorbent body 3 and the temperature-sensitive sheet 13 of the temperature-sensitive body 5 is configured to be substantially equal to the distance between the excretory opening and the lower abdomen (distance on the skin surface) of the wearer.

In the temperature-sensitive body 5, the temperature-sensitive sheet 13 is composed of three nonwoven fabrics. As shown in fig. 3, the temperature-sensitive sheet 13 holds a1 st temperature-sensitive composition 17 containing a1 st temperature-sensitive agent throughout the sheet. In addition, a part of the 1 st thermo-sensitive composition 17 is also held in the region of the liquid-permeable sheet 7 on the thermo-sensitive imparting sheet 13 side.

The length of the temperature-sensitive sheet 13 in the width direction W is longer than the length of the absorbent body 11 in the width direction W, and the 1 st temperature-sensitive composition 17 is disposed in a region wider than the absorbent body 11 in the width direction W.

The absorption body 3 corresponds to a normal sanitary napkin. The absorption body 3 holds the 2 nd temperature-sensitive composition 19 containing the 2 nd temperature-sensitive agent in the excretory opening contact region adjacent regions 23 that are present on both outer sides in the width direction W of the excretory opening contact region 21. Specifically, the 2 nd temperature-sensitive composition 19 is held between the absorbent body 11 and the liquid-permeable sheet 7 in the region overlapping the absorbent body 11 in the thickness direction T of the excretory opening contact region adjacent region 23, and the 2 nd temperature-sensitive composition 19 is held between the liquid-permeable sheet 7 and the liquid-impermeable sheet 9 in the region not overlapping the absorbent body 11 in the thickness direction T of the excretory opening contact region adjacent region 23.

The 1 st thermosensitive composition 17 is composed of 5 mass% of the 1 st thermosensitive agent activating the TRP channel and 95 mass% of the solvent, and the 2 nd thermosensitive composition 19 is composed of 5 mass% of the 2 nd thermosensitive agent activating the TRP channel and 95 mass% of the solvent. The temperature-sensitive body 5 has a temperature-sensitive sheet 13 having a thickness of 2.0g/m ² The 1 st thermo-sensitive composition 17 (at 0.1 g/m) was held by a weight per unit area of ² The 1 st temperature sensitive agent is held per unit area weight), and the adjacent region 23 of the absorption body 3 in the excretory opening contact region is 10g/m ² The weight per unit area of the No. 2 temperature-sensitive composition 19 (at 0.5 g/m) was maintained ² The weight per unit area of (2) is retained.

The 1 st and 2 nd temperature-sensitive agents contained in the 1 st and 2 nd temperature-

sensitive compositions

17 and 19 are each vanillyl alcohol butyl ether.

As shown in fig. 4, when the sanitary napkin 1 is used by being fixed to the clothing 151, the 1 st thermo-sensitive composition 17 contained in the thermo-sensitive body 5 and the thermo-sensitive agent-providing sheet 13 is brought into contact with the skin of the wearer through the liquid-permeable sheet 7, and the TRP channel at the thermo-sensitive agent-contacting portion of the skin of the wearer, which is in contact with the 1 st thermo-sensitive agent, can be efficiently activated, thereby providing a sense of warmth to the lower abdomen of the wearer.

By giving a temperature sensation to the lower abdomen of the wearer, the TRP channel of the temperature sensitive agent contact portion of the skin of the lower abdomen of the wearer, which is in contact with the 1 st temperature sensitive agent, is activated, and as a result, it is expected that heat is generated from the temperature sensitive agent contact portion via the sympathetic nervous system to raise the temperature of the temperature sensitive agent contact portion of the skin of the wearer, and further, that the portion of the wearer close to the uterus is warmed, and that the wearer's physiological pain is alleviated.

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

In the sanitary napkin 1 according to embodiment 1, the 2 nd thermo-sensitive composition 19 disposed in the region 23 adjacent to the excretory opening contact region of the absorbent main body 3 is brought into contact with the excretory opening of the wearer through the liquid-permeable sheet 7, whereby the TRP channel in the part of the excretory opening of the wearer in contact with the thermo-sensitive agent 2 is activated, the warming sensation time in the lower abdomen of the wearer, particularly in the part in contact with the thermo-sensitive main body 5 (the 1 st thermo-sensitive composition 17), is shortened, and the occurrence of itching in this part can be suppressed.

The 1 st temperature-sensitive composition 17 of the temperature-sensitive body 5, specifically, the 1 st temperature-sensitive agent in the 1 st temperature-sensitive composition 17 can also impart a temperature-sensitive property to pelvic lymph nodes (e.g., an internal iliac lymph node, an obturator lymph node, an external iliac lymph node, an anterior sacral lymph node, a total iliac lymph node, a cardinal ligament lymph node, a sacral lymph node, an inguinal upper lymph node, and a periaortic lymph node), inguinal lymph nodes (e.g., an inguinal shallow lymph node, and an inguinal deep lymph node), and the like of the wearer.

The stiffness of the temperature-sensitive sheet overlapping portion 25 overlapping with the temperature-sensitive sheet 13 of the temperature-sensitive body 5 in the thickness direction T is lower than the stiffness of the absorbent body overlapping portion 27 overlapping with the absorbent body 11 of the absorbent body 3 in the thickness direction T. Specifically, the stiffness of the warming-feeling-applying-sheet-superposed portion 25 (composed of the liquid-permeable sheet 7, the warming-feeling-applying sheet 13, and the liquid-impermeable sheet 9) obtained by the Gurley method is lower than the stiffness of the absorbent-body-superposed portion 27 (composed of the liquid-permeable sheet 7, the absorbent body 11, and the liquid-impermeable sheet 9) obtained by the Gurley method. By doing so, the wearer can feel a warm feeling in the lower abdomen where the pubic hair is present, and the wearer is less likely to feel a sense of discomfort in the lower abdomen.

Next, a method for measuring stiffness by the gurley method will be described.

The thickness of the temperature-sensitive sheet 13 is smaller than the thickness of the absorbent body 11. By doing so, the wearer does not easily feel a sense of discomfort in the lower abdomen.

The temperature-sensitive body 5 is divided into a temperature-sensitive body central portion 29 overlapping with the temperature-sensitive sheet 13 in the thickness direction T and a temperature-sensitive body peripheral portion 31 not overlapping with the temperature-sensitive sheet 13 in the thickness direction T, and the temperature-sensitive body peripheral portion 31 has a lower rigidity than the temperature-sensitive body central portion 29. By doing so, the wearer is less likely to feel a sense of discomfort in the lower abdomen when the absorbent article is used.

In addition, in the temperature-sensitive main body peripheral edge portion 31, the embossed portion 111 is formed by intermittently compressing the liquid-permeable sheet 7 and the liquid-impermeable sheet 9. By doing so, the wearer is less likely to feel a sense of discomfort in the lower abdomen when using the absorbent article.

Fig. 5 is a view 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"), and is a view showing a wearing state. 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".

The pants-type sanitary napkin 201 according to embodiment 2 is composed of a pants part 203 and an absorbent article part 205. The absorbent article 205 includes an absorption body 207 and a temperature-sensitive body 209. The absorbent article section 205 includes a liquid-permeable sheet (not shown) that comes into contact with the skin of the wearer when worn, a liquid-impermeable sheet (not shown), and an absorbent body 211 that is disposed between the liquid-permeable sheet and the liquid-impermeable sheet in the absorbent body 207. The absorbent article portion 205 includes a liquid-permeable sheet (not shown) that comes into contact with the skin of the wearer when worn, a liquid-impermeable sheet (not shown), and a temperature-sensitive sheet 213 that is disposed between the liquid-permeable sheet and the liquid-impermeable sheet in the temperature-sensitive body 209.

The liquid-permeable sheet (not shown) of the absorption body 207, the liquid-permeable sheet (not shown) of the temperature-sensitive body 209, and the liquid-permeable sheet (not shown) of the pants part 203 are formed of an integrated nonwoven fabric. The liquid-impermeable sheet (not shown) of the absorption body 207, the liquid-impermeable sheet (not shown) of the temperature-sensitive body 209, and the liquid-impermeable sheet (not shown) of the pants part 203 are also formed of an integrated synthetic resin film.

The pants part 203 and the absorbent article part 205 are divided by a seal part (not shown) formed by compressing a liquid-permeable sheet (not shown) and a liquid-impermeable sheet (not shown).

The temperature-sensitive sheet 213 of the temperature-sensitive body 209 is made of a nonwoven fabric having a high weight per unit area. The temperature-sensitive sheet 213 does not hold a temperature-sensitive agent (1 st temperature-sensitive agent), but is configured to have a high weight per unit area and a constant heat retaining property.

The absorption body 207 holds the 2 nd temperature sensitive composition 217 containing the 2 nd temperature sensitive agent in the adjacent regions (not shown) of the excretory opening contact region (not shown) present on both outer sides in the width direction of the excretory opening contact region (not shown) of the absorption body 207. The 2 nd temperature-sensitive composition 217 held by the absorption body 207 has the same function as the 2 nd temperature-sensitive composition 19 of embodiment 1, and therefore, the description thereof is omitted.

In the pants-type sanitary napkin 201, the temperature-sensitive sheet 213 of the temperature-sensitive body 209 has heat-retaining properties and can impart a temperature-sensitive property to the lower abdomen of the wearer. Further, the 2 nd temperature sensitive composition 217 of the absorption body 207 disposed in the region adjacent to the excretory opening contact region (not shown) is brought into contact with the excretory opening of the wearer through the liquid-permeable sheet (not shown), and contributes to activation of the TRP channel in the temperature sensitive agent contact portion of the excretory opening of the wearer, which the 2 nd temperature sensitive agent contacts, and imparting a temperature sensation to the lower abdomen of the wearer.

The stiffness of the temperature-sensitive sheet overlapping portion 219 overlapping with the temperature-sensitive sheet 213 of the temperature-sensitive body 209 in the thickness direction T is lower than the stiffness of the absorbent body overlapping portion 221 overlapping with the absorbent body 211 of the absorbent body 207 in the thickness direction T. Specifically, the stiffness by the gurley method of the temperature sensation application sheet superposed section 219 (composed of the liquid-permeable sheet (not shown), the temperature sensation application sheet 213, and the liquid-impermeable sheet (not shown)) is lower than the stiffness by the gurley method of the absorbent body superposed section 221 (composed of the liquid-permeable sheet (not shown), the absorbent body 211, and the liquid-impermeable sheet (not shown)). By doing so, the wearer can feel a warm feeling in the lower abdomen where the pubic hair is present, and the wearer is less likely to feel a sense of discomfort in the lower abdomen.

The thickness of the temperature-sensitive sheet 213 is smaller than that of the absorbent body 211. By doing so, the wearer does not easily feel a sense of discomfort in the lower abdomen.

The temperature sensing body 209 is divided into a temperature sensing body central portion 223 overlapping with the temperature sensing piece 213 in the thickness direction T and a temperature sensing body peripheral portion 225 not overlapping with the temperature sensing piece 213 in the thickness direction T, and the rigidity of the temperature sensing body peripheral portion 225 is lower than that of the temperature sensing body central portion 223. By doing so, the wearer is less likely to feel a sense of discomfort in the lower abdomen when the absorbent article is used.

Fig. 6 is a view for explaining a disposable diaper 301 for adults as an absorbent article according to still another embodiment of the present disclosure (hereinafter referred to as "embodiment 3"), and is a view showing a wearing state. 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 301 of embodiment 3 includes an absorbent body 303 and a temperature-sensitive body 305. The disposable diaper 301 includes a liquid-permeable sheet 307 which comes into contact with the skin of the wearer, a liquid-impermeable sheet 309, and an absorber 311 which is disposed between the liquid-permeable sheet 307 and the liquid-impermeable sheet 309 in the absorbent body 303. The disposable diaper 301 includes a liquid-permeable sheet 307, a liquid-impermeable sheet 309, and a temperature-sensitive sheet 313 disposed between the liquid-permeable sheet 307 and the liquid-impermeable sheet 309 in the temperature-sensitive body 305.

The temperature-sensitive sheet 313 is disposed at a position corresponding to the lower abdomen of the wearer when the disposable diaper 301 is worn.

The temperature-sensitive sheet 313 is made of a nonwoven fabric, and the 1 st temperature-sensitive composition 315 containing the 1 st temperature-sensitive agent and the solvent is held on the entire surface thereof. In addition, a part of the 1 st temperature sensitive composition 315 is also held in the region of the liquid-permeable sheet 307 on the side of the temperature sensitive sheet 313.

The absorption body 303 holds a2 nd temperature sensitive composition 317 containing a2 nd temperature sensitive agent and a solvent in the adjacent regions (not shown) of the excretory opening contact region (not shown) present on both outer sides in the width direction of the excretory opening contact region (not shown) of the absorption body 303.

The 1 st temperature-sensitive composition 315 held by the temperature-sensitive body 305 and the 2 nd temperature-sensitive composition 317 held by the absorption body 303 are the same as the 1 st temperature-sensitive composition 17 and the 2 nd temperature-sensitive composition 19 of embodiment 1, respectively, and therefore, the description thereof is omitted.

When the wearer of the disposable diaper 301 is female, the following is expected: (i) discharging prostaglandin which is a cause of physiological pain, relaxing muscles such as uterine muscles, and alleviating physiological pain; (ii) promoting blood circulation, promoting lymph flow, discharging metabolite, improving cold syndrome, and burning fat; (iii) improving immunity, etc.

When the wearer of the disposable diaper 301 is a male, the following is expected: (i) expelling prostaglandin, relaxing muscle, and relieving pain; (ii) promoting blood circulation, promoting lymph flow, discharging metabolite, improving cold syndrome, and burning fat; (iii) improving immunity, etc.

Fig. 7 is a view for explaining a sanitary napkin 1 as an absorbent article according to still another embodiment of the present disclosure (hereinafter referred to as "embodiment 4"). Hereinafter, the "sanitary napkin as the absorbent article according to embodiment 4" may be simply referred to as the "sanitary napkin according to embodiment 4".

In the sanitary napkin 1 according to embodiment 4, the temperature-sensitive body 5 is configured such that the temperature-sensitive sheet 13 holds the 1 st temperature-sensitive composition 17 containing the 1 st temperature-sensitive agent and the solvent over the entire surface thereof, but the weight per unit area of the 1 st temperature-sensitive agent in the 1 st temperature-sensitive composition 17b at the peripheral edge portion of the temperature-sensitive sheet 13 is smaller than the weight per unit area of the 1 st temperature-sensitive agent in the 1 st temperature-sensitive composition 17a at the center of the temperature-sensitive sheet 13. By doing so, the warming effect by the 1 st warming agent becomes small at the peripheral edge portion of the warming-sensation imparting sheet 13, and the wearer is less likely to feel itching during the warming sensation time, particularly at the peripheral edge portion of the warming-sensation imparting sheet 13.

Further, the absorption body 3 holds the 2 nd temperature-sensitive composition 19 containing the 2 nd temperature-sensitive agent in the excretory opening contact region 21 and the excretory opening contact region adjacent regions 23 present on both outer sides in the width direction W of the excretory opening contact region 21. Specifically, the 2 nd temperature-sensitive composition 19 is held between the absorbent body 11 and the liquid-permeable sheet 7 in a region overlapping the absorbent body 11 in the thickness direction T of the excretory opening contact region adjacent region 23, and the 2 nd temperature-sensitive composition 19 is held between the liquid-permeable sheet 7 and the liquid-impermeable sheet 9 in a region not overlapping the absorbent body 11 in the thickness direction T of the excretory opening contact region adjacent region 23.

The sanitary napkin 1 according to embodiment 4 is the same as the sanitary napkin 1 according to embodiment 1 except for the above-described portions, and therefore, the description thereof is omitted.

The absorbent article of the present disclosure may be configured such that the temperature-sensitive main body includes a temperature-sensitive sheet, the temperature-sensitive sheet may be configured as a single body of the temperature-sensitive sheet, and the temperature-sensitive sheet may include a temperature-sensitive sheet, another sheet such as a liquid-permeable sheet, a liquid-impermeable sheet, and a temperature-sensitive sheet disposed between the liquid-permeable sheet and the liquid-impermeable sheet.

In the absorbent article of the present disclosure, the stiffness of the overlapping portion of the temperature-sensitive sheet overlapping the temperature-sensitive sheet of the temperature-sensitive body in the thickness direction of the absorbent article is lower than the stiffness of the overlapping portion of the absorbent body overlapping the absorbent body of the absorbent body in the thickness direction of the absorbent article, and the stiffness of the overlapping portion of the temperature-sensitive sheet is preferably in the range of 5% to 70%, more preferably 10% to 60%, and still more preferably 20% to 50% of the stiffness of the overlapping portion of the absorbent body. By doing so, the overlapped portion of the warming sensation-imparting sheet is less likely to be bent when the absorbent article is worn by the wearer, and further, the wearer's lower abdomen can be reliably made to feel a warming sensation and the wearer's lower abdomen is less likely to feel a feeling of discomfort.

In the absorbent article of the present disclosure, the stiffness of the overlapping portion of the temperature-sensitive sheets of the temperature-sensitive body is preferably 1mN to 15mN, more preferably 3mN to 10mN, and still more preferably 4mN to 8 mN. This is from the viewpoint that the wearer's lower abdomen can be reliably made to feel a feeling of warmth and the wearer's lower abdomen is less likely to feel a feeling of discomfort.

The above-described relationship of the stiffness is preferably satisfied between a sample centered on the centers in the longitudinal direction and the width direction of the absorbent article (hereinafter, refer to the stiffness measurement method) of the superposed portion of the temperature sensitive sheet and a sample centered on the center of the excretory opening contact region of the superposed portion of the absorbent article, and more preferably between a sample at an arbitrary portion of the superposed portion of the temperature sensitive sheet and a sample at an arbitrary portion of the superposed portion of the absorbent article.

Further, in the case where the absorbent body includes an absorbent core (pulp fibers, a mixture of pulp fibers and a super absorbent polymer, a super absorbent polymer sheet, etc.) and a core wrap (tissue paper, dust-free paper, etc.), the above-described relationship of stiffness is preferably satisfied in an absorbent core overlapping portion overlapping with the absorbent core in the thickness direction of the absorbent article in the absorbent body overlapping portion. The reason for this is that it is the part of the absorbent core of the absorbent body that the wearer easily feels stiffness.

The relationship between stiffness is preferably satisfied in the width direction of the absorbent article, and more preferably satisfied in both the longitudinal direction and the width direction of the absorbent article. This is from the viewpoint that the wearer's lower abdomen is less likely to feel uncomfortable.

In the present specification, the above-mentioned stiffness is measured as follows, and the items not described conform to JIS L1913: 2010 "6.7.4 gurley" of general nonwoven test methods ".

(1) A No.311 Grignard type softness tester manufactured by Antaha Seiko Seikagaku Kogyo Co., Ltd was prepared in a constant temperature and humidity chamber (temperature: 25. + -. 5 ℃ C., relative humidity: 65. + -. 5%).

(2) The sample to be measured was left standing in the developed state for 24 hours in the above-mentioned constant temperature and humidity chamber.

(3) A sample having a length L of 38mm and a width d of 25mm is cut out from the sample so that the length L extends in a predetermined direction (for example, the longitudinal direction and the width direction of the absorbent article). In addition, in the case where the absorbent article is individually packaged, the packaging sheet is removed before measurement.

(4) The sample was set such that one end 6.3mm in the longitudinal direction of the sample was held by the chuck section and the other end 6.3mm in the longitudinal direction of the sample was in contact with the bob B.

(5) The scale (RG) when the sample is separated from the pendulum B is read by rotating the movable arm at a constant speed ₁ ) (1 st time). Next, the front and back sides of the sample were reversed, the sample was set in a grignard softness tester, and the scale (RG) at the time of separating the sample from the bob B was read ₂ ) (2 nd time).

(6) The stiffness (mN) was calculated according to the following equation.

Stiffness (mN)

[ equation 1]

(7) The measurements described above were repeated a total of 5 times using different samples, taking the average of the stiffness values described above.

In the absorbent article of the present disclosure, the thickness of the temperature-sensitive sheet is preferably smaller than the thickness of the absorbent body, and the thickness of the temperature-sensitive sheet is preferably in the range of 1% to 60%, more preferably 2% to 50%, and still more preferably 3% to 40% of the thickness of the absorbent body. By doing so, the lower abdomen of the wearer can be made to feel warm and discomfort is less likely to be felt in the lower abdomen of the wearer.

The thicknesses of the temperature-sensitive sheet and the absorber were measured in the same manner as the thickness of the sample sheet in the measurement of the fiber density described later.

In the absorbent article of the present disclosure, the temperature-sensitive sheet of the temperature-sensitive main body may or may not hold the temperature-sensitive agent. This is because, even when the temperature-sensitive agent is not held by the temperature-sensitive sheet, the wearer can feel a temperature in the lower abdomen when the temperature-sensitive sheet has a certain heat retaining property.

From the viewpoint of reliably imparting a temperature sensation to the lower abdomen of the wearer, it is preferable that the temperature sensation imparting sheet of the temperature sensation main body retains a temperature sensation agent.

In addition, from the viewpoint of reliably imparting a temperature sensation to the lower abdomen of the wearer, the temperature-sensation main body may hold the heating element such as iron powder within a range that satisfies the condition that the stiffness of the overlapping portion of the temperature-sensation imparting sheet is lower than the stiffness of the overlapping portion of the absorbent body.

In the absorbent article of the present disclosure, the absorbent main body may or may not hold the temperature sensitive agent.

In the absorbent article of the present disclosure, it is preferable that the absorption body holds the temperature sensitive agent from the viewpoint that when the temperature sensitive agent is held by the temperature sensitive sheet of the temperature sensitive body, itching is not easily felt in the lower abdomen of the wearer and the temperature is reliably given to the lower abdomen of the wearer.

In the absorbent article of the present disclosure, when the absorbent body holds the temperature sensitive agent, the absorbent body can hold the temperature sensitive agent in a region overlapping with the absorber in the thickness direction of the absorbent article, a region not overlapping with the absorber in the thickness direction of the absorbent article, or the like.

The temperature sensitive agent can be retained in the absorbent body, the liquid-permeable sheet, and the like in the region overlapping with the absorbent body in the thickness direction of the absorbent article. In addition, the temperature sensitive agent is held between the liquid-permeable sheet and the liquid-impermeable sheet in a region that does not overlap with the absorbent body in the thickness direction of the absorbent article.

In the absorbent article of the present disclosure, when the absorbent body holds the temperature sensitive agent, the absorbent body can hold the temperature sensitive agent in the adjacent regions of the excretory opening contact region disposed on both outer sides in the width direction of the absorbent article, and the like, in the excretory opening contact region which is disposed in contact with the excretory opening of the wearer.

The temperature sensitive agent disposed in the region adjacent to the excretory opening contact region may be disposed only in the region adjacent to the excretory opening contact region, may extend in the longitudinal direction of the absorbent body beyond the region adjacent to the excretory opening contact region, or may be connected to the temperature sensitive agent disposed in the temperature sensitive body. In addition, since sweat is likely to be generated in the range from the hip to the rear in the longitudinal direction of the absorbent main body, the temperature sensitive agent does not need to be disposed.

In the absorbent article of the present disclosure, the temperature-sensitive body and the absorbent body may hold the temperature-sensitive agent as a single body, or may hold the temperature-sensitive agent as a temperature-sensitive composition containing the temperature-sensitive agent (for example, a temperature-sensitive composition containing the temperature-sensitive agent and a solvent).

The above-mentioned temperature sensitive composition can be in a liquid or solid state at room temperature, for example, 25 ℃. In addition, in view of the ease of movement for the wearer, it is preferable that the temperature sensitive composition is in a liquid state at 36 ℃ corresponding to body temperature.

In the present specification, "temperature sensitive agent" and "temperature sensitive composition" capable of holding a temperature sensitive body are sometimes referred to as "1 st temperature sensitive agent" and "1 st temperature sensitive composition", respectively, and "temperature sensitive agent" and "temperature sensitive composition" capable of holding an absorption body are sometimes referred to as "2 nd temperature sensitive agent" and "2 nd temperature sensitive composition", respectively, and "1 st temperature sensitive agent" and "2 nd temperature sensitive agent" are sometimes referred to as "temperature sensitive agent", respectively, and "1 st temperature sensitive composition" and "2 nd temperature sensitive composition" are sometimes referred to as "temperature sensitive composition", respectively.

In the present specification, "1 st" and "2 nd" relating to the temperature-sensitive agent and the temperature-sensitive composition mean that the positions where these substances are disposed are different from each other, do not mean that the compositions of these substances are different from each other, and these substances may have the same composition.

The above-mentioned thermosensor is preferably a substance that activates a TRP channel, and examples thereof include an agonist against TRPV1 receptor, an agonist against TRPV3 receptor and the like, and an agonist against TRPV1 is preferred. This is because the activation temperature threshold of the TRPV1 receptor is high, exceeding 43 ℃, and can impart a high temperature sensation to the wearer.

The temperature sensitive agent is preferably a plant-derived compound from the viewpoint of the wearer's sense of reassurance. Examples of the aforementioned temperature-sensitive agent include capsaicin, capsaicin (LD 50: 47mg/kg, molecular weight: 305), capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaine, homocapsaicin, nonivamide, etc.), capsorubin, benzyl nicotinate (LD 50: 2188mg/kg, molecular weight: 213), β -butoxyethyl nicotinate, N-acetyl vanillylamide, vanillylamide nonanoate, polyol, paprika, capsicum tincture, capsicum extract, vanillyl ether nonanoate, vanillyl alcohol alkyl ether derivatives (e.g., vanillyl ethyl ether, vanillyl butyl ether (LD 50: 4900mg/kg, molecular weight: 210), vanillyl alcohol pentyl ether, vanillyl alcohol hexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratryl alcohol derivatives, substituted benzyl alcohol alkyl ether, vanillin propylene glycol acetal, vanillyl alcohol, capsaicin acetate, capsaicin acetate, capsaicin, ethyl vanillin propylene glycol acetal, ginger extract, ginger oil, gingerol (LD 50: 250mg/kg, molecular weight: 294), zingerone, hesperidin and pyrrolidone carboxylic acid, and any combination thereof.

The warming agent is preferably not capsaicin, but is more preferably a vanillyl alcohol alkyl ether derivative (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, from the viewpoint that the wearer does not easily feel pain, itching, or the like.

The solvent is not particularly limited as long as it can contain the temperature sensitive agent, and examples thereof include a lipophilic solvent and a hydrophilic solvent. The solvent can dissolve or disperse the temperature sensitive agent, for example.

Examples of the lipophilic solvent include oils and fats, for example, natural oils (e.g., fatty acid esters such as triglycerides, coconut oil, linseed oil, and tricaprylin (caprylic/capric) glyceride), 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, and 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 of making it difficult to impair the absorbency of the absorbent article.

In the absorbent article of the present disclosure, when the main temperature-sensitive body and/or the main absorbent body holds the temperature-sensitive agent as the temperature-sensitive composition, the temperature-sensitive composition contains the temperature-sensitive agent in an amount of preferably 0.0001 to 5.0% by mass, more preferably 0.0005 to 3.0% by mass, still more preferably 0.1 to 1.0% by mass, and yet more preferably 0.3 to 0.7% by mass. This is from the viewpoint of the effect of temperature sensing.

In the absorbent article of the present disclosure, when the temperature-sensitive body holds the 1 st temperature-sensitive agent as a single body, the temperature-sensitive body is preferably 0.001g/m ² ～1g/m ² More preferably 0.003g/m ² ～0.5g/m ² More preferably 0.01g/m ² ～0.25g/m ² More preferably 0.05g/m ² ～0.15g/m ² The composition (1) contains a1 st temperature-sensitive agent. This is from the viewpoint of imparting a feeling of warmth to the lower abdomen of the wearer and making it difficult for the lower abdomen of the wearer to feel itching.

In the absorbent article of the present disclosure, when the temperature-sensitive body holds the 1 st temperature-sensitive agent as the 1 st temperature-sensitive composition, the weight per unit area of the temperature-sensitive body per the 1 st temperature-sensitive agent is preferably 0.001g/m ² ～1g/m ² More preferably 0.003g/m ² ～0.5g/m ² More preferably 0.01g/m ² ～0.25g/m ² More preferably 0.05g/m ² ～0.15g/m ² Such a weight per unit area contains the 1 st temperature sensitive composition. This is from the viewpoint of imparting a feeling of warmth to the lower abdomen of the wearer and making it difficult for the lower abdomen of the wearer to feel itching.

In the absorbent article of the present disclosure, in the case where the absorbent body holds the 2 nd temperature sensitive agent as a single body, the absorbent body is preferably 0.01g/m ² ～10g/m ² More preferably 0.03g/m ² ～5g/m ² More preferably 0.1g/m ² ～2.5g/m ² More preferably 0.3g/m ² ～1.5g/m ² The unit area weight of (2) contains a second temperature-sensitive agent. This is from the viewpoint of imparting a feeling of warmth to the lower abdomen of the wearer and making it difficult for the lower abdomen of the wearer to feel itching.

In the absorbent article of the present disclosure, when the absorbent body holds the 2 nd temperature-sensitive agent as the 2 nd temperature-sensitive composition, the weight per unit area of the 2 nd temperature-sensitive agent in the absorbent body is preferably 0.01g/m ² ～10g/m ² More preferably 0.03g/m ² ～5g/m ² More preferably 0.1g/m ² ～2.5g/m ² More preferably 0.3g/m ² ～1.5g/m ² Such a weight per unit area contains the 2 nd temperature sensitive composition. This is from the viewpoint of imparting a feeling of warmth to the lower abdomen of the wearer and making it difficult for the lower abdomen of the wearer to feel itching.

In the absorbent article of the present disclosure, when the temperature-sensitive body and the absorption body hold the temperature-sensitive agent as a single body or as a temperature-sensitive composition, the weight per unit area of the 1 st temperature-sensitive agent held by the temperature-sensitive body is preferably 0.01 times or more, more preferably 0.05 times or more, and still more preferably 0.1 times or more, relative to the weight per unit area of the 2 nd temperature-sensitive agent held by the absorption body. This is from the viewpoint of imparting a feeling of warmth to the lower abdomen of the wearer and making it difficult for the lower abdomen of the wearer to feel itching.

In the absorbent article of the present disclosure, when the temperature-sensitive body and the absorption body hold the temperature-sensitive agent as a single body or a temperature-sensitive composition, the weight per unit area of the 1 st temperature-sensitive agent held by the temperature-sensitive body is arbitrary with respect to the weight per unit area of the 2 nd temperature-sensitive agent held by the absorption body, the weight per unit area of the 1 st temperature-sensitive agent held by the temperature-sensitive body may be smaller or larger than the weight per unit area of the 2 nd temperature-sensitive agent held by the absorption body, and the weight per unit area of the 1 st temperature-sensitive agent held by the temperature-sensitive body may be the same as the weight per unit area of the 2 nd temperature-sensitive agent held by the absorption body.

When the weight per unit area of the 1 st temperature-sensitive agent held by the temperature-sensitive body is smaller than the weight per unit area of the 2 nd temperature-sensitive agent held by the absorption body, the weight per unit area of the 1 st temperature-sensitive agent held by the temperature-sensitive body is preferably less than 1.0 times, more preferably 0.5 times or less, and still more preferably 0.3 times or less, the weight per unit area of the 2 nd temperature-sensitive agent held by the absorption body. This makes it possible to impart a warm feeling to the lower abdomen of the wearer (particularly, the portion of the wearer that contacts the absorption body) and to make the lower abdomen of the wearer (particularly, the portion of the wearer that contacts the absorption body) less likely to feel itching.

In addition, when the weight per unit area of the 1 st temperature-sensitive agent held by the temperature-sensitive body is larger than the weight per unit area of the 2 nd temperature-sensitive agent held by the absorption body, for example, the weight per unit area of the 1 st temperature-sensitive agent held by the temperature-sensitive body is preferably 1.3 times or more, more preferably 1.6 times or more, and further preferably 1.9 times or more, the weight per unit area of the 2 nd temperature-sensitive agent held by the absorption body. This makes it difficult for the wearer's lower abdomen (particularly, the wearer's portion in contact with the absorbent body) to feel itching, and makes it possible to impart a high temperature feeling to the wearer's lower abdomen (particularly, the wearer's portion in contact with the absorbent body), and to prevent the absorbent properties of the absorbent article from being impaired.

In the absorbent article of the present disclosure, when the temperature-sensitive agent is held as a single body in both the temperature-sensitive body and the absorption body, the 1 st temperature-sensitive agent and the 2 nd temperature-sensitive agent may be the same type or different types. The type and amount of the 1 st temperature-sensitive agent and the type and amount of the 2 nd temperature-sensitive agent can be selected from the viewpoint of making the lower abdomen of the wearer feel warm and making it difficult for the lower abdomen of the wearer to feel itching.

In the absorbent article of the present disclosure, when both the temperature-sensitive body and the absorption body hold the temperature-sensitive agent as the temperature-sensitive composition, the 1 st temperature-sensitive agent contained in the 1 st temperature-sensitive composition and the 2 nd temperature-sensitive agent contained in the 2 nd temperature-sensitive composition may be the same type or different types. The type and amount of the 1 st temperature-sensitive agent and the type and amount of the 2 nd temperature-sensitive agent can be selected from the viewpoint of making the lower abdomen of the wearer feel warm and making it difficult for the lower abdomen of the wearer to feel itching.

In the present specification, the weight per unit area of the temperature-sensitive agent and the temperature-sensitive composition is measured as follows.

(1) A plurality of absorbent articles are prepared, and the temperature sensitive agent and the temperature sensitive composition in each absorbent article are cured by liquid nitrogen.

(2) An absorbent article after curing from a temperature-sensitive agent and a temperature-sensitive composition using a cutter or the like so that a sample of a desired region has a predetermined area in the plane direction: s ₁ (m ² ) In such a way that a sample of the desired area is cut off.

Further, each sample may be cut so as to include an absorbent body, a temperature-sensitive sheet, a liquid-impermeable sheet, and the like.

(3) The mass of each sample was measured: m is ₁ (g)。

(4) Each sample is washed with a washing solvent (for example, toluene in the case where the solvent of the temperature-sensitive composition is a lipophilic solvent, or ethanol in the case where the solvent of the temperature-sensitive composition is a hydrophilic solvent) matching the polarity of the temperature-sensitive agent or the temperature-sensitive composition.

(5) Each of the washed samples was dried at 70 ℃ for 1 hour, and the dried mass was measured: m is ² (g)。

(6) According to the following formula:

bs(g/m ² )＝(m ₁ -m ₂ )/S ₁

calculate the weight per unit area of the temperature sensitive solution for each sample: bs (g/m) ² )。

(7) The weights per unit area of the temperature sensitive agent or the temperature sensitive composition of each sample were measured 10 times in total using different absorbent articles, and the average value thereof was taken as the weight per unit area of the temperature sensitive agent or the temperature sensitive composition of the desired region. The proportion of the warming agent in the warming composition is measured by analyzing the warming composition using analytical means well known in the art.

The weight of the temperature-sensitive agent or the temperature-sensitive composition per unit area can be evaluated visually using an optical microscope or the like.

In the absorbent article of the present disclosure, when the temperature-sensitive body and/or the absorption body holds the temperature-sensitive agent as the temperature-sensitive composition, the temperature-sensitive composition may contain at least one other component shown below within a range in which the effect of imparting a temperature sensation to the wearer is not impaired.

Examples of the at least one other component include a cold feeling agent. Examples of the psychrotolerant include substances that activate a TRP channel, and examples of the psychrotolerant 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 cooling agent include menthol (e.g., l-menthol) and derivatives thereof (e.g., menthyl lactate, menthyl glyceryl ether, e.g., l-menthyl glyceryl ether), methyl salicylate, camphor, essential oils derived from plants (e.g., mint and eucalyptus), and the like.

The inventor of the application finds that: in the case where the warming composition contains a cooling agent for activating the TRP channel in addition to the warming agent for activating the TRP channel, the wearer is less likely to feel itching in the portion and the peripheral portion thereof in contact with the warming composition during the above-described warming sensation period.

In the absorbent article of the present disclosure, when the temperature sensitive composition further contains a cooling agent, the temperature sensitive composition contains the cooling agent in an amount of preferably 0.0001 to 5.0% by mass, more preferably 0.0005 to 3.0% by mass, still more preferably 0.1 to 1.0% by mass, and still more preferably 0.3 to 0.7% by mass. This is from the viewpoint that the wearer is less likely to feel itching and less likely to feel excessive coldness during the warm feeling time.

In the absorbent article of the present disclosure, when the temperature sensitive composition further contains a cooling agent, the temperature sensitive composition is preferably in a weight ratio of 20: 1-1: 10. more preferably 10: 1-1: 5. more preferably 2: 1-1: 1 contains the temperature sensitive agent and the cold sensitive agent in a mass ratio of 1. This is from the viewpoint that the wearer does not easily feel itching during the warm feeling time and does not easily feel a cold feeling and easily feels a warm feeling.

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

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

Examples of the at least one other component include vitamins such as natural vitamins and synthetic vitamins. As the above vitamins, there may be mentioned, for example, water-soluble vitamins such as vitamin B group such as vitamin B ₁ Vitamin B ₂ Vitamin B ₃ Vitamin B ₅ Vitamin B ₆ Vitamin B ₇ Vitamin B ₉ Vitamin B ₁₂ Etc., vitamin C.

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

The vitamins also include derivatives of the vitamins.

Examples of the at least one other component include alanine, arginine, lysine, histidine, proline, hydroxyproline, and the like, and peptides.

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

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

Examples of the at least one other component include a drug such as 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, tannic acid, and the like, and oil-soluble skin astringent such as oil-soluble polyphenol. Examples of the oil-soluble polyphenol include natural oil-soluble polyphenols such as phellodendron amurense extract, Hypericum erectum extract, Lamiaceae extract, Chamomilla recutita extract, Burdock extract, Salvia officinalis extract, Tilia huadonii 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 anti-acne agent include salicylic acid, benzoyl peroxide, resorcinol, sulfur, erythromycin, zinc, and the like.

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

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

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

Examples of the at least one other component include an anti-inflammatory component, a pH adjuster, an antibacterial agent, a 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, and perilla extract; synthetic anti-inflammatory agents such as allantoin, dipotassium glycyrrhizinate and the like.

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 oxide.

With the absorbent article of the present disclosure, it is preferable that the temperature-sensitive body and/or the absorption body do not contain a heat generating agent. By doing so, the wearer is less likely to suffer low temperature burns. Further, since the absorbent article itself does not generate heat, the adhesive portion for fixing the absorbent article to clothing or skin is not easily softened, and when the absorbent article is removed from clothing or the skin of a wearer after the use of the absorbent article is finished, the adhesive portion of the absorbent article is not easily left on the clothing or the skin.

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 oxidation heat of metal powder (e.g., iron powder), neutralization heat of acid and alkali, water and heat of inorganic salt, and the like.

In the absorbent article of the present disclosure, it is preferable that the temperature-sensitive body is divided into a temperature-sensitive body central portion (i.e., a temperature-sensitive sheet overlapping portion) overlapping the temperature-sensitive sheet in the thickness direction of the absorbent article and a temperature-sensitive body peripheral portion not overlapping the temperature-sensitive sheet in the thickness direction of the absorbent article, and the rigidity of the temperature-sensitive body peripheral portion is lower than the rigidity of the temperature-sensitive body central portion. By doing so, the wearer's lower abdomen is less likely to feel uncomfortable when using the absorbent article.

The level of the rigidity can be determined by touching the central portion of the temperature sensing body and the peripheral portion of the temperature sensing body.

In the absorbent article of the present disclosure, in the case where the temperature-sensitive body is divided into the above-described temperature-sensitive body central portion and temperature-sensitive body peripheral portion, the temperature-sensitive body peripheral portion may be provided with embossed portions formed by continuously and intermittently compressing the liquid-permeable sheet and the liquid-impermeable sheet, and the embossed portions may be continuously or intermittently arranged along the temperature-sensitive body peripheral portion, and preferably, the embossed portions may be intermittently arranged along the temperature-sensitive body peripheral portion. By doing so, it is difficult for the wearer's lower abdomen to feel uncomfortable when using the absorbent article.

The absorbent article of the present disclosure is not particularly limited as long as the liquid-permeable sheet has liquid permeability, and is composed of, for example, a fabric (e.g., nonwoven fabric, woven fabric, knitted fabric), an apertured film, or the like. From the viewpoint of ease of the method for producing an absorbent article, the fabric is preferably a nonwoven fabric.

Examples of the nonwoven fabric include a dust-free paper, a hot air nonwoven fabric, a spunbond nonwoven fabric, a point-bond nonwoven fabric, a spunlace nonwoven fabric, a needle-punched nonwoven fabric, a meltblown nonwoven fabric, and a combination of the above nonwoven fabrics (for example, 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, kapok, and modal, cuprammonium rayon fibers obtained from a cuprammonium salt solution of cellulose (also referred to as "Cupra"); 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 without undergoing a cellulose derivative.

As the above-mentioned semi-synthetic fibers, semi-synthetic cellulosic fibers such as acetate fibers, for example, triacetate fibers and diacetate fibers can be cited.

Examples of the synthetic fibers include hot-melt adhesive fibers made of polyolefin polymers such as polyethylene or polypropylene; polyester-based polymers such as terephthalic-based polymers, e.g., polyethylene terephthalate (PET), polybutylene terephthalate, and polybutylene terephthalate; polyamide-based polymers such as nylon 6 or nylon 6, 6; an acrylic polymer; a polyacrylonitrile-based polymer; or a modified form of the above substances or a combination of the above substances.

Examples of the apertured film include films having a plurality of apertured parts provided in a sheet of polyethylene or polypropylene.

In the absorbent article of the present disclosure, examples of the material of the temperature sensation imparting sheet include materials listed as the material of the liquid-permeable sheet, materials listed as the liquid-impermeable sheet described later, and the like.

The temperature-sensitive sheet may be a sheet integrated with the liquid-permeable sheet or the liquid-impermeable sheet of the absorbent main body, or may be a sheet independent from the liquid-permeable sheet or the liquid-impermeable sheet of the absorbent main body.

The temperature-sensitive sheet preferably has a thickness of 10g/m ² ～200g/m ² More preferably 20g/m ² ～160g/m ² More preferably 30g/m ² ～140g/m ² More preferably 40g/m ² ～120g/m ² Weight per unit area of (c).

In the absorbent article of the present disclosure, when the temperature-sensitive body and/or the absorbent body includes two or more layers capable of holding the temperature-sensitive agent, i.e., the upper layer and the lower layer, in the thickness direction of the absorbent article, the temperature-sensitive body and/or the absorbent body can be provided with on demand properties by controlling these layers. For example, the absorbent article can be provided with the compatibility as needed by adjusting the polarity (oleophilic degree and hydrophilic degree) of the liquid-permeable sheet as the upper layer and the temperature-sensitive sheet, the absorbent body, and the like as the lower layer.

For example, when the temperature-sensitive body and/or the absorption body hold the temperature-sensitive composition containing the lipophilic solvent, the lower layer preferably has a higher oleophilic degree than the upper layer. This is because the temperature-sensitive composition is likely to stay in the lower layer in a state where no force is applied to the temperature-sensitive body and/or the absorption body, and the temperature-sensitive composition is likely to move toward the upper layer and further toward the wearer when a force is applied to the temperature-sensitive body and/or the absorption body.

For example, in the case where the temperature-sensitive composition containing the hydrophilic solvent is held in the temperature-sensitive body and/or the absorption body, the lower layer preferably has a higher degree of hydrophilicity than the upper layer. This is because the temperature-sensitive composition is likely to stay in the lower layer in a state where no force is applied to the temperature-sensitive body and/or the absorption body, and the temperature-sensitive composition is likely to move toward the upper layer and further toward the wearer when a force is applied to the temperature-sensitive body and/or the absorption body.

For example, in the case where the upper layer is a liquid-permeable sheet, the liquid-permeable sheet may have hydrophilicity or lipophilicity. The liquid-permeable sheet having hydrophilicity can be formed by treating (for example, applying a hydrophilizing agent or kneading a hydrophilizing agent) a raw material constituting the liquid-permeable sheet with a hydrophilizing agent known in the art. Examples of the hydrophilizing agent include alkyl phosphate ester salts and alkyl phosphate metal salts. Examples of the hydrophilizing agent include alkyl phosphate ester salts having 10 to 30 carbon atoms and betaine compounds having 10 to 30 carbon atoms, mixtures of sulfate ester salts and sulfonate ester salts, and mixtures of alkyl phosphate ester salts and polyether-modified silicones.

The liquid-permeable sheet having lipophilicity can be formed by treating (for example, applying a lipophilic agent or kneading a lipophilic agent) a raw material constituting the liquid-permeable sheet with a lipophilic agent known in the art. Examples of the lipophilic agent include fatty acid esters (e.g., triglycerides) and hydrocarbons (e.g., straight chain hydrocarbons).

The inventor of the present application found that: in addition to the fact that the warm feeling time tends to be longer in the absorbent article containing a temperature sensitive agent than in the heat-generating article containing a heat-generating agent (e.g., iron powder), the wearer is likely to feel itching during the warm feeling time, the manner of feeling the warm feeling differs depending on the state of the wearer's skin (e.g., dryness of the wearer's skin) in the absorbent article containing a temperature sensitive agent as compared with the heat-generating article containing a heat-generating agent (e.g., iron powder). For example, when the skin of the wearer is wet with moisture, the skin and mainly the stratum corneum of the wearer are likely to be kept in a swollen state, and the temperature sensitive agent is likely to reach the TRP channel mainly present in keratinocytes (keratinocytes), so that the wearer is likely to feel a temperature sensation (a short time for sensing warmth).

Therefore, by providing the absorbent article of the present disclosure with the on-demand response property, the wearer presses the temperature sensitive body and/or the absorption body in the thickness direction of the absorbent article, and the temperature sensitive agent is released from the temperature sensitive body and/or the absorption body, and the temperature sensitive agent reaches the skin of the wearer, and the wearer can be further provided with a temperature feeling than before the pressing, and the wearer can adjust the temperature feeling. Preferably, the temperature-sensitive body is provided with the above-described on-demand response. This is from the viewpoint of ease of pressing by the wearer.

When the absorbent article of the present disclosure is provided with the on-demand property, the liquid-permeable sheet preferably has a thickness of preferably 0.005g/cm ³ ～0.060g/cm ³ More preferably 0.010g/cm ³ ～0.050g/cm ³ More preferably 0.020g/cm ³ ～0.040g/cm ³ Fabric having a fiber density of (1). The absorbent article can have the response as needed by adjusting the fiber densities of the liquid-permeable sheet as the upper layer and the lower layer.

The above-described method for measuring the fiber density is explained later.

When the absorbent article of the present disclosure is provided with the demand-response property, it is preferable that the liquid-permeable sheet is 30g/cm ² The thickness under load was 3g/cm ² The thickness under load is preferably 70% or less, more preferably 60% or less, and still more preferably 50% or less. By doing so, the wearer feels warmth in the body andwhen the temperature-sensitive body and/or the absorption body is pressed in the thickness direction of the absorption body, the liquid-permeable sheet is easily crushed, the temperature-sensitive agent held by the temperature-sensitive body and/or the absorption body is easily brought into contact with the skin of the wearer, and the response to demand of the absorbent article is improved.

When the absorbent article of the present disclosure is provided with the demand-response property, it is preferable that the liquid-permeable sheet is 10g/cm ² The thickness under load was 3g/cm ² The thickness under load is preferably 70% or more, more preferably 80% or more, and still more preferably 90% or more. By doing so, the liquid-permeable sheet is less likely to be flattened by the wearing pressure of the clothing or the like, and the temperature sensitive agent held by the liquid-permeable sheet is less likely to come into contact with the skin of the wearer by the wearing pressure, and the responsiveness of the absorbent article to demand is more likely to be improved.

In the present specification, 30g/cm is measured as follows ² 、10g/cm ² And 3g/cm ² Thickness under load.

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

(2) The thickness of the sample is measured at 10 with the position changed and the average of them is taken as the thickness of the sample.

The load is adjusted by changing the gauge head. Under the condition of load: 3g/cm ² Using the conditions of (a): 44mm gauge head, under load: 10g/cm ² Using the diameter: 25mm gauge head, and in addition, under a load: 30g/cm ² Using the diameter: 14mm gauge head.

The liquid-permeable sheet preferably has a thickness of 10g/m ² ～100g/m ² More preferably 20g/m ² ～50g/m ² Weight per unit area of (c). The basis weight of the liquid-permeable sheet was measured in the same manner as the basis weight of the sample sheet in the measurement of the fiber density described later. The same applies to other materials constituting the absorbent article.

In the absorbent article of the present disclosure, the temperature-sensitive body may have a property of being responsive to demand, and the temperature-sensitive sheet may have hydrophilicity or lipophilicity. The temperature-sensitive sheet having hydrophilicity can be formed by treating (for example, applying a hydrophilizing agent or kneading a hydrophilizing agent) a raw material constituting the temperature-sensitive sheet with a hydrophilizing agent known in the art. The hydrophilizing agent may be a hydrophilizing agent as described in the description of the liquid-permeable sheet. By adjusting the polarity (oleophilic degree and hydrophilic degree) between the liquid-permeable sheet and the temperature-sensitive sheet, the temperature-sensitive body can have the response as needed.

The temperature-sensitive sheet having lipophilicity can be formed by treating (for example, applying a lipophilic agent or kneading a lipophilic agent) a raw material constituting the temperature-sensitive sheet with a lipophilic agent known in the art. The lipophilic agents include those listed in the description of the liquid-permeable sheet.

In the absorbent article of the present disclosure, when the temperature-sensitive main body has the on-demand property, the temperature-sensitive sheet is preferably a fabric, and the temperature-sensitive sheet has a thickness of preferably 0.010g/cm ³ ～0.500g/cm ³ More preferably 0.020g/cm ³ ～0.300g/cm ³ More preferably 0.030g/cm ³ ～0.100g/cm ³ The fiber density of (a).

In the absorbent article of the present disclosure, when the temperature-sensitive main body has the response-on-demand property, the liquid-permeable sheet is preferably a fabric, and the liquid-permeable sheet has a fiber density lower than that of the temperature-sensitive sheet, preferably 0.005g/cm ³ More preferably 0.010g/cm or more ³ More preferably 0.015g/cm or more ³ More than or preferably 0.020g/cm ³ Above, still more preferably 0.025g/cm ³ More preferably 0.030g/cm ³ The above poor fiber density. By doing so, the 1 st temperature sensitive agent, particularly the 1 st temperature sensitive composition, is easily held on the temperature sensitive sheet having a high fiber density in a state where no force or the like is applied, and when the wearer presses the absorbent article, the 1 st temperature sensitive agent, particularly the 1 st temperature sensitive composition, is easily moved to the liquid permeable sheet and then moved to the skin of the wearer.

In the absorbent article of the present disclosure, when the temperature-sensitive main body has the capability of coping with demand, the liquid-permeable sheet is a fabric, and the liquid-permeable sheet has a fiber density lower than that of the temperature-sensitive sheet, preferably 0.440g/cm ³ Less than, more preferably 0.300g/cm ³ The concentration is preferably 0.250g/cm or less ³ The lower, more preferably 0.200g/cm ³ The concentration is preferably 0.150g/cm or less ³ The concentration is preferably 0.100g/cm or less ³ The concentration is preferably 0.060g/cm ³ Hereinafter, still more preferably 0.045g/cm ³ It is preferably 0.040g/cm or less ³ Hereinafter, still more preferably 0.035g/cm ³ The following poor fiber density. By doing so, the 1 st temperature sensitive agent, particularly the 1 st temperature sensitive composition, is likely to move to the liquid-permeable sheet and then to the skin of the wearer when the wearer presses the absorbent article.

The fiber densities of the liquid-permeable sheet and the temperature-sensation imparting sheet were measured as follows.

(1) At the temperature: 20 ± 5 ℃ and humidity: 65 + -5% RH constant temperature and humidity chamber prepared by Daorhizi Seiki, manufactured by Kabushiki Kaisha FS-60 DS [ measuring surface 44mm (diameter), measuring pressure 3g/cm ² ]The liquid-permeable sheet and/or the temperature-sensitive sheet (hereinafter referred to as "specimen") were left standing in the constant temperature and humidity chamber for 24 hours.

(2) 10 pieces of sample pieces of 0.1m × 0.1m size were extracted from the above sample.

(3) By measuring the mass of each sample piece, and then dividing the mass (g) of each sample piece by the area (m) of each sample piece ² ) Thus, the weight per unit area of each sample piece was calculated: bw (g/m) ² )。

(4) The thickness of each sample piece was measured 10 seconds after applying pressure to 5 different portions of each sample piece using FS-60 DS, and the average of the 5 measurements was taken as the thickness of each sample piece: t (m).

(5) In each sample piece, the weight per unit area of the sample piece: bw (g/m) ² ) Dividing by the thickness of the sample piece: t (m) and adjusting the unit to calculate the fiber density of each sample pieceDegree: fd (g/cm) ³ )。

(6) Fiber density was calculated for a total of 10 sample pieces: fd (g/cm) ³ ) The average value is taken as the fiber density: FD (g/cm) ³ )。

In the absorbent article of the present disclosure, when the temperature-sensitive body has the on-demand property and the temperature-sensitive body holds the 1 st temperature-sensitive composition containing the lipophilic solvent, the oleophilic degree of the temperature-sensitive sheet is preferably higher than that of the liquid-permeable sheet. By doing so, the 1 st temperature-sensitive composition containing the lipophilic solvent is more likely to be present in the temperature-sensitive sheet than in the liquid-permeable sheet, and therefore, when the wearer presses the absorbent article, the 1 st temperature-sensitive composition is released from the temperature-sensitive sheet, moves toward the liquid-permeable sheet, passes through the 1 st temperature-sensitive composition of the liquid-permeable sheet, and reaches the skin of the wearer, and can impart a temperature sensation to the wearer. Further, when the wearer stops pressing the absorbent article, the 1 st temperature sensitive composition that has reached the skin of the wearer gradually returns to the temperature sensitive sheet due to the difference in the oleophilic degree of the temperature sensitive sheet and the liquid permeable sheet. Therefore, the wearer can control the temperature more easily, and the adaptability of the temperature-sensitive body to the needs is easily improved.

In the absorbent article of the present disclosure, when the temperature sensitive main body has the on-demand property and the temperature sensitive main body holds the 1 st temperature sensitive composition containing the hydrophilic solvent, it is preferable that the hydrophilicity of the temperature sensitive sheet is higher than the hydrophilicity of the liquid permeable sheet. This is from the viewpoint of improving the on-demand performance of the absorbent article. By doing so, the 1 st thermo-sensitive composition containing a hydrophilic solvent is more likely to be present in the thermo-sensitive sheet than in the liquid-permeable sheet, and thus when the wearer presses the absorbent article, the 1 st thermo-sensitive composition is released from the thermo-sensitive sheet, moves to the liquid-permeable sheet, passes through the 1 st thermo-sensitive composition of the liquid-permeable sheet, and reaches the skin of the wearer, and can impart a thermo-sensitive feeling to the wearer. Further, when the wearer stops pressing the absorbent article, the No. 1 thermo-sensitive composition that has reached the skin of the wearer gradually returns to the thermo-sensitive sheet due to the difference in the hydrophilicity of the thermo-sensitive sheet and the hydrophilicity of the liquid-permeable sheet. Therefore, the wearer can more easily control the temperature, and the absorbent article can easily be excellent in the response to demand.

The degree of oleophilic property and the degree of hydrophilicity were evaluated as follows.

(1) At the temperature: 20 ± 5 ℃ and humidity: an automatic minimum contact angle meter MCA-J from interfacial chemical corporation was prepared in a constant temperature and humidity chamber of 65 ± 5% RH, and the liquid-permeable sheet and the temperature-sensitive sheet (hereinafter referred to as "sample") were allowed to stand in the constant temperature and humidity chamber for 24 hours.

(2) Minute droplets (20pL) of deionized water were dropped from an ink jet head of MCA-J onto the surface of a sample to be measured (the surface of a fiber in the case where the sample is a fabric, and the surface of a sheet in the case where the sample is a sheet), and the minute droplets were recorded over time.

(3) An image analysis is performed on an image immediately after the droplet is attached to the surface of the sample, and a contact angle of the droplet with respect to the surface of the sample is calculated.

(4) The contact angle is the average of the measurements at a total of 20 different fibers.

(5) The sample with the larger contact angle is regarded as a sample with higher lipophilicity (sample with lower hydrophilicity), and the sample with the smaller contact angle is regarded as a sample with lower lipophilicity (sample with higher hydrophilicity).

In the absorbent article of the present disclosure, the material constituting the absorbent article, preferably the skin contact sheet (for example, liquid-permeable sheet) that contacts the skin of the wearer, may include a material selected from the group consisting of a heat-generating material, a heat-insulating material, a moisture-absorbing material, and any combination of these materials (hereinafter, may be simply referred to as "functional material").

When the material constituting the absorbent article contains the above-mentioned predetermined functional material, the skin, mainly the stratum corneum, of the wearer is easily swollen by moisture due to moisture evaporation, sweat, or the like from the wearer, and the warming agent easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the warm feeling time is shortened, and the wearer is less likely to feel itching during the warm feeling time.

Examples of the heat-generating material include (i) a moisture-absorbing heat-generating material (e.g., a moisture-absorbing heat-generating fiber or a moisture-absorbing heat-generating sheet), (ii) a heat-storing material (e.g., a heat-storing fiber or a heat-storing sheet), and (iii) a far-infrared-emitting material (e.g., a far-infrared-emitting fiber or a far-infrared-emitting sheet).

Examples of the hygroscopic exothermic material include acrylic acid ester materials and wool. Examples of the heat-accumulative material include a material containing a substance (such as zirconium carbide) which absorbs sunlight and converts it into heat energy, and a carbon material. Examples of the far infrared ray-emitting material include materials containing ceramics that emit far infrared rays when heated.

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

Examples of the hygroscopic material include the natural fibers and the semi-synthetic fibers.

Specifically, in the absorbent article of the present disclosure, when the material constituting the absorbent article, for example, the liquid-permeable sheet contains a hygroscopic heat-generating material, for example, hygroscopic heat-generating fibers, when moisture such as evaporation of moisture or sweat from the skin of the wearer is supplied, the hygroscopic heat-generating fibers generate heat, and the wearer is likely to sweat. Then, the moisture of the sweat of the wearer causes the skin, mainly the stratum corneum, of the wearer to swell with the moisture, and the warming agent easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the warm feeling time is shortened, and the wearer is less likely to feel itching during the warm feeling time.

In addition, even when the material constituting the absorbent article, for example, the liquid-permeable sheet contains a heat-accumulative material or a far infrared ray-emitting material, the wearer is likely to sweat, and the skin and mainly the stratum corneum of the wearer are swollen by moisture due to moisture of the sweat of the wearer, so that the temperature-sensitive agent is likely to reach the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the warm feeling time is shortened, and the wearer is less likely to feel itching during the warm feeling time.

In addition, in the case where the material constituting the absorbent article, for example, the liquid-permeable sheet contains a heat-insulating material, the wearer is likely to sweat, and the skin and mainly the stratum corneum of the wearer are swollen by moisture due to the moisture of the sweat of the wearer, and the warming agent is likely to reach the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the warm feeling time is shortened, and the wearer is less likely to feel itching during the warm feeling time.

In addition, in the case where the material constituting the absorbent article, for example, the liquid-permeable sheet contains a hygroscopic material, the hygroscopic material holds moisture such as moisture evaporation and sweat of the wearer, and the skin and mainly the stratum corneum of the wearer are easily swollen by the moisture, and the warming agent easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the warm feeling time is shortened, and the wearer is less likely to feel itching during the warm feeling time.

The absorbent article of the present disclosure is not particularly limited as long as it has liquid impermeability, and examples thereof include films such as moisture-permeable films made of polyethylene, polypropylene, and the like, non-moisture-permeable films, materials obtained by joining moisture-permeable films to nonwoven fabrics such as spunbond, spunlace, and the like, and multi-layer nonwoven fabrics such as SMS.

The above liquid-impermeable sheet preferably has a thickness of 10g/m ² ～50g/m ² More preferably 15g/m ² ～30g/m ² Weight per unit area of (a).

For the absorbent article of the present disclosure, it is preferable that the liquid-impermeable sheet is composed of a non-moisture-permeable film. By doing so, moisture, water vapor, and the like present on the skin of the wearer contacting the temperature-sensitive body and the absorption body are less likely to permeate the liquid-impermeable sheet and be discharged to the outside of the absorbent article, the skin of the wearer, mainly the stratum corneum, is likely to maintain a state of swelling by moisture, and the temperature-sensitive agent is likely to reach the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the warm feeling time is shortened, and the wearer is less likely to feel itching during the warm feeling time.

The temperature-sensitive sheet may contain a1 st temperature-sensitive agent. In the case where the temperature-sensitive body holds the 1 st temperature-sensitive composition containing the lipophilic solvent, the temperature-sensitive sheet may be a fabric made of synthetic fibers, for example, a nonwoven fabric, a woven fabric, a knitted fabric, or the like, and may be a nonwoven fabric made of synthetic fibers, for example. When the absorbent article retains the 1 st thermo-sensitive composition containing a hydrophilic solvent, the thermo-sensitive sheet may be a fabric made of a cellulose fiber, such as a nonwoven fabric, a woven fabric, a knitted fabric, or the like, and may be a tissue paper made of pulp fiber, a dust-free paper, or the like.

In the absorbent article of the present disclosure, the temperature-sensitive body may include an additional sheet between the liquid-permeable sheet and the liquid-impermeable sheet, specifically, between the liquid-permeable sheet and the temperature-sensitive sheet and/or between the temperature-sensitive sheet and the liquid-impermeable sheet.

In the absorbent article of the present disclosure, the absorption body may include an additional sheet known in the art, for example, a diffusion sheet between the liquid-permeable sheet and the absorber, between the liquid-permeable sheet and the liquid-impermeable sheet.

Examples of the additional sheet include materials and tissues listed as raw materials of the liquid-permeable sheet.

Examples of the absorbent material include an absorbent material in which an absorbent core containing pulp fibers and a super absorbent polymer is covered with a core wrap, an absorbent material in which an absorbent core containing a super absorbent polymer or an absorbent core made of a super absorbent polymer is covered with a core wrap, and the like. Examples of the core wrap include tissue paper and dust-free paper.

The absorbent article of the present disclosure can include an adhesive portion for fixing the absorbent article to clothes, the skin of a wearer, and the like, and examples of the adhesive portion include hot-melt adhesives such as pressure-sensitive adhesives or heat-sensitive adhesives mainly composed of rubbers such as styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS), and styrene-isoprene-styrene (SIS), or mainly composed of olefins 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 absorbent article of the present disclosure is preferably wrapped by a wrapping sheet before use. This is from the viewpoint of protecting the temperature sensitive agent held by the absorbent article, from the viewpoint of preventing the temperature sensitive agent held by the absorbent article from leaking to the outside, and the like. For example, the absorbent article of the present disclosure is preferably a package in which one or more absorbent articles are wrapped with a wrapping sheet, and more preferably an independent package in which one absorbent article is wrapped with a wrapping sheet.

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 a material obtained by vapor deposition of aluminum oxide, silicon oxide, and the like on a base film (polyethylene terephthalate or the like).

The absorbent article of the present disclosure is not particularly limited, and examples thereof include sanitary napkins, pants-type sanitary napkins, pantiliners, disposable diapers, incontinence pads, interlabial pads, tampons, obstetric pads, breast pads, hemorrhoid pads, sweat isolation pads, bedsore sheets (dressing sheets), pet diapers, and pet pads.

< Structure (b) >

The absorbent article of the present disclosure is described in detail below.

Fig. 1 to 4 are views for explaining the sanitary napkin 1 according to embodiment 1 as described above, but fig. 1 to 4 are views for explaining the sanitary napkin 1 as an absorbent article according to another embodiment of the present disclosure (hereinafter referred to as "embodiment 5"). Hereinafter, the "sanitary napkin as the absorbent article according to embodiment 5" may be simply referred to as the "sanitary napkin according to embodiment 5". Specifically, fig. 1 is a plan view of a sanitary napkin 1 according to embodiment 5. Fig. 2 is an exploded perspective view of the sanitary napkin 1. Fig. 3 is a diagram for explaining the 1 st temperature-sensitive composition 17 disposed in the temperature-sensitive body 5 and the 2 nd temperature-sensitive composition 19 disposed in the absorption body 3. Fig. 4 is a view showing a worn state of the sanitary napkin 1.

The sanitary napkin 1 according to embodiment 5 is similar to that described in embodiment 1 except that the warming sheet 13 and the warming sheet overlapping portion 25 are referred to as the auxiliary sheet 13 and the auxiliary sheet overlapping portion 25, respectively, and therefore, the description thereof is omitted.

Fig. 8 is a view 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 6"), and is a view showing a wearing state. Hereinafter, the "pants-type sanitary napkin as the absorbent article according to embodiment 6" may be simply referred to as "pants-type sanitary napkin according to embodiment 6".

The pants-type sanitary napkin 201 according to embodiment 6 is composed of a pants part 203 and an absorbent article part 205. The absorbent article 205 includes an absorption body 207 and a temperature-sensitive body 209. The absorbent article 205 includes a liquid-permeable sheet (not shown) that comes into contact with the skin of the wearer when worn, a liquid-impermeable sheet (not shown), and an absorbent body 211 that is disposed between the liquid-permeable sheet and the liquid-impermeable sheet in the absorbent body 207. The absorbent article section 205 includes a liquid-permeable sheet (not shown) that comes into contact with the skin of the wearer when worn, a liquid-impermeable sheet (not shown), and an auxiliary sheet 214 disposed between the liquid-permeable sheet and the liquid-impermeable sheet in the temperature-sensitive body 209.

The liquid-permeable sheet (not shown) of the absorption body 207, the liquid-permeable sheet (not shown) of the temperature-sensitive body 209, and the liquid-permeable sheet (not shown) of the pants part 203 are formed of an integrated nonwoven fabric. The liquid-impermeable sheet (not shown) of the absorption body 207, the liquid-impermeable sheet (not shown) of the temperature-sensitive body 209, and the liquid-impermeable sheet (not shown) of the pants part 203 are also formed of an integral synthetic resin film.

The auxiliary sheet 214 of the temperature-sensitive body 209 is made of a nonwoven fabric, as in the auxiliary sheet 13 of embodiment 5. The auxiliary sheet 214 holds a1 st thermosensitive composition 215 in its entirety, and the 1 st thermosensitive composition 215 contains a solvent and a1 st thermosensitive agent for activating the TRP channel. In addition, a part of the 1 st temperature sensitive composition 215 is also held in the region of the liquid-permeable sheet (not shown) on the auxiliary sheet 214 side.

The absorption body 207 holds the 2 nd temperature sensitive composition 217 containing the 2 nd temperature sensitive agent in the adjacent regions (not shown) of the excretory opening contact region (not shown) present on both outer sides in the width direction of the excretory opening contact region (not shown) of the absorption body 207.

Since the 1 st temperature-sensitive composition 215 held by the temperature-sensitive body 209 and the 2 nd temperature-sensitive composition 217 held by the absorption body 207 are the same as the 1 st temperature-sensitive composition 17 and the 2 nd temperature-sensitive composition 19 of embodiment 5, respectively, their effects are also the same, and thus, the description thereof is omitted.

The stiffness of the auxiliary sheet overlapping portion 220 overlapping with the auxiliary sheet 214 of the temperature sensitive main body 209 in the thickness direction T is lower than the stiffness of the absorbent body overlapping portion 221 overlapping with the absorbent body 211 of the absorbent main body 207 in the thickness direction T. Specifically, the stiffness of the auxiliary sheet overlapping portion 220 (composed of the liquid-permeable sheet (not shown), the auxiliary sheet 214, and the liquid-impermeable sheet (not shown)) according to the gurley method is lower than the stiffness of the absorbent body overlapping portion 221 (composed of the liquid-permeable sheet (not shown), the absorbent body 211, and the liquid-impermeable sheet (not shown)) according to the gurley method. By doing so, the wearer can feel a warm feeling in the lower abdomen where the pubic hair is present, and the wearer is less likely to feel a sense of discomfort in the lower abdomen.

The thickness of the auxiliary sheet 214 is thinner than that of the absorbent body 211. By doing so, the wearer does not easily feel a sense of discomfort in the lower abdomen.

The temperature sensing body 209 is divided into a temperature sensing body center portion 223 overlapping the auxiliary sheet 214 in the thickness direction T and a temperature sensing body peripheral portion 225 not overlapping the auxiliary sheet 214 in the thickness direction T, and the rigidity of the temperature sensing body peripheral portion 225 is lower than that of the temperature sensing body center portion 223. By doing so, the wearer is less likely to feel a sense of discomfort in the lower abdomen when using the absorbent article.

Fig. 6 is a view for explaining the disposable diaper 301 for adults according to embodiment 3, as described above, but fig. 6 is a view for explaining the disposable diaper 301 for adults, which is an absorbent article according to still another embodiment of the present disclosure (hereinafter referred to as "embodiment 7"), and is a view showing a wearing state. Hereinafter, the "disposable diaper as the absorbent article according to embodiment 7" may be simply referred to as the "disposable diaper according to embodiment 7".

The disposable diaper 301 for adults of embodiment 7 is the same as that described in the section of the disposable diaper 301 for adults of embodiment 3 except that the temperature sensation imparting sheet 313 is referred to as the auxiliary sheet 313 instead, and therefore, the description thereof is omitted.

Fig. 7 is a view for explaining the sanitary napkin 1 according to embodiment 4 as described above, but fig. 7 is a view for explaining the sanitary napkin 1 as an absorbent article according to still another embodiment (hereinafter referred to as "embodiment 8") of the present disclosure. Hereinafter, the "sanitary napkin as the absorbent article according to embodiment 8" may be simply referred to as the "sanitary napkin according to embodiment 8".

The sanitary napkin 1 according to embodiment 8 is similar to that described in the disposable diaper 301 for adults according to embodiment 3 except that the temperature sensation applying sheet 13 is referred to as an auxiliary sheet 13 instead, and therefore, the description thereof is omitted.

With the absorbent article of the present disclosure, the temperature-sensitive body and the absorption body contain the 1 st temperature-sensitive agent and the 2 nd temperature-sensitive agent, respectively.

The main body can hold the 1 st temperature-sensitive agent as a single body, and can hold the 1 st temperature-sensitive agent as a1 st temperature-sensitive composition containing the 1 st temperature-sensitive agent (for example, the 1 st temperature-sensitive composition containing the 1 st temperature-sensitive agent and a solvent). Further, the absorption body can hold the 2 nd temperature sensitive agent as a single body, and can hold the 2 nd temperature sensitive agent as a2 nd temperature sensitive composition containing the 2 nd temperature sensitive agent (for example, the 2 nd temperature sensitive composition containing the 2 nd temperature sensitive agent and a solvent).

In the present specification, the "1 st temperature sensitive agent" held by the temperature sensitive body and the "2 nd temperature sensitive agent" held by the absorption body may be collectively referred to as a "temperature sensitive agent", and the "1 st temperature sensitive composition" capable of holding the temperature sensitive body and the "2 nd temperature sensitive composition" capable of holding the absorption body may be collectively referred to as a "temperature sensitive composition".

Since the general description of the absorbent article of the present disclosure, that is, the absorbent article having the structure (b), for example, the general description of the temperature sensitive body (1 st and 2 nd temperature sensitive agents) and the temperature sensitive composition (1 st and 2 nd temperature sensitive compositions) is the same as that described in the section of the absorbent article having the structure (a), the description thereof will be omitted, and the description thereof will be focused on the differences from the absorbent article having the structure (a).

In addition, in the case of referring to the absorbent article having the structure (a), "the temperature sensation-imparting sheet" and "the temperature sensation-imparting sheet overlapped portion" are appropriately referred to as "the auxiliary sheet" and "the auxiliary sheet overlapped portion".

In the absorbent article of the present disclosure, the temperature sensitive body can hold the 1 st temperature sensitive agent at an arbitrary position, for example, the entire surface, the central portion, or the like, in the planar direction of the absorbent article (the longitudinal direction and the width direction of the absorbent article). In the absorbent article of the present disclosure, when the temperature sensing body includes the auxiliary sheet, the temperature sensing body can be held in a region overlapping with the auxiliary sheet in the thickness direction of the absorbent article and a region not overlapping with the auxiliary sheet in the thickness direction of the absorbent article.

With the absorbent article of the present disclosure, the temperature-sensitive body can hold the 1 st temperature-sensitive agent at an arbitrary position in the thickness direction of the absorbent article. In the absorbent article of the present disclosure, when the temperature sensitive body includes the liquid-permeable sheet and the liquid-impermeable sheet, the temperature sensitive body can hold the 1 st temperature sensitive agent between the liquid-permeable sheet and the liquid-impermeable sheet, inside the liquid-permeable sheet, and the like. In the absorbent article of the present disclosure, when the temperature-sensitive body includes the liquid-permeable sheet, the auxiliary sheet, and the liquid-impermeable sheet, the temperature-sensitive body can hold the 1 st temperature-sensitive agent at a position inside the liquid-permeable sheet, inside the auxiliary sheet, between the liquid-permeable sheet and the auxiliary sheet, between the auxiliary sheet and the liquid-impermeable sheet, or at any combination of these positions.

With the absorbent article of the present disclosure, the absorbent body can hold the 2 nd temperature sensitive agent in a region overlapping with the absorber in the thickness direction of the absorbent article, a region not overlapping with the absorber in the thickness direction of the absorbent article, and the like. When the absorbent body holds the 2 nd temperature-sensitive agent in a region overlapping the absorbent body in the thickness direction of the absorbent article, the 2 nd temperature-sensitive agent is likely to permeate into the skin of the wearer from the absorbent body having a high chance of coming into direct contact with the skin (such as the excretory opening) of the wearer. Further, by holding the 2 nd temperature sensitive agent in a region or the like where the absorber does not overlap in the thickness direction of the absorbent article by the absorption body, a portion where the 2 nd temperature sensitive agent has a high moisture content to the skin of the wearer and the 2 nd temperature sensitive agent easily permeates (a portion of the skin of the wearer that does not contact the absorber, the absorption of moisture by the absorber is small, and the moisture content of the skin of the wearer is easily increased) easily permeates.

With the absorbent article of the present disclosure, the absorbent body can hold the 2 nd temperature sensitive agent in the excretory opening contact region of the absorbent body, the adjacent regions of the excretory opening contact region that are present on both outer sides in the width direction of the absorbent article in the excretory opening contact region, the adjacent regions of the excretory opening contact region that are present on both outer sides in the longitudinal direction of the absorbent article in the excretory opening contact region, and the like. By holding the 2 nd temperature sensitive agent in the excretory opening contact region and/or the region adjacent to the excretory opening contact region in the absorbent body, it becomes easier to impart a temperature sensation to the lower abdomen of the wearer, and it becomes less likely that the wearer feels a sense of discomfort in the lower abdomen.

With the absorbent article of the present disclosure, the absorbent body holds the 2 nd temperature sensitive agent at a position that can be within the liquid-permeable sheet, within the absorbent body, between the liquid-permeable sheet and the absorbent body, between the absorbent body and the liquid-impermeable sheet, between the liquid-permeable sheet and the liquid-impermeable sheet, and in any combination of the above positions in the thickness direction of the absorbent article.

In the absorbent article of the present disclosure, it is preferable that the stiffness of the overlapping portion of the auxiliary sheet with the auxiliary sheet of the temperature-sensitive main body overlapping in the thickness direction of the absorbent article is lower than the stiffness of the overlapping portion of the absorbent body with the absorbent body of the absorbent main body overlapping in the thickness direction of the absorbent article, and the stiffness of the overlapping portion of the auxiliary sheet is in the range of more preferably 5% to 70%, still more preferably 10% to 60%, and still more preferably 20% to 50% of the stiffness of the overlapping portion of the absorbent body. By doing so, the overlapping portion of the auxiliary sheet is less likely to be bent when the wearer wears the absorbent article, and further, the wearer's lower abdomen can be reliably made to feel a warm feeling, and the wearer's lower abdomen is less likely to feel a sense of discomfort.

In the absorbent article of the present disclosure, the stiffness of the portion where the auxiliary sheet overlaps the temperature sensitive body is preferably 1mN to 15mN, more preferably 3mN to 10mN, and still more preferably 4mN to 8 mN. This is from the viewpoint that the wearer's lower abdomen can be reliably made to feel a feeling of warmth and the wearer's lower abdomen is less likely to feel a feeling of discomfort.

The above-described relationship of the stiffness is preferably satisfied between a sample (hereinafter, referred to as a stiffness measurement method) of the auxiliary sheet overlapped portion centered on the center in the longitudinal direction and the width direction of the absorbent article and a sample of the absorbent body overlapped portion centered on the center of the excretory opening abutment region, and more preferably between a sample at an arbitrary portion of the auxiliary sheet overlapped portion and a sample at an arbitrary portion of the absorbent body overlapped portion.

In addition, in the case where the absorbent body includes an absorbent core (pulp fibers, a mixture of pulp fibers and a super absorbent polymer, a super absorbent polymer sheet, etc.) and a core wrap (tissue paper, dust-free paper, etc.), the relationship of the above-described stiffness is preferably satisfied in an absorbent core overlapping portion overlapping with the absorbent core in the thickness direction of the absorbent article in the absorbent body overlapping portion. The reason for this is that it is the part of the absorbent core of the absorbent body that the wearer easily feels the stiffness.

The stiffness relationship is preferably satisfied in the width direction of the absorbent article, and preferably satisfied in both the longitudinal direction and the width direction of the absorbent article. This is from the viewpoint that the wearer's lower abdomen is less likely to feel uncomfortable. Since the method of measuring stiffness has already been described in connection with the structure (a), the description thereof will be omitted.

In the absorbent article of the present disclosure, the thickness of the auxiliary sheet is preferably smaller than the thickness of the absorbent body, and the thickness of the auxiliary sheet is preferably in the range of more preferably 1% to 60%, still more preferably 2% to 50%, and still more preferably 3% to 40% of the thickness of the absorbent body. By doing so, the lower abdomen of the wearer can be made to feel warm and discomfort is less likely to be felt in the lower abdomen of the wearer.

Further, the thicknesses of the temperature-sensitive sheet and the absorbent body were measured in the same manner as the thickness of the sample sheet in the measurement of the fiber density described above.

With the absorbent article of the present disclosure, it is preferable that the temperature-sensitive body is divided into a temperature-sensitive body central portion (i.e., an auxiliary sheet overlapping portion) overlapping the auxiliary sheet in the thickness direction of the absorbent article and a temperature-sensitive body peripheral portion not overlapping the auxiliary sheet in the thickness direction of the absorbent article, and the rigidity of the temperature-sensitive body peripheral portion is lower than the rigidity of the temperature-sensitive body central portion. By doing so, the wearer's lower abdomen is less likely to feel uncomfortable when using the absorbent article.

In the absorbent article of the present disclosure, the temperature-sensitive body may include an auxiliary sheet, and the material of the auxiliary sheet may be exemplified by the material of the liquid-permeable sheet.

The auxiliary sheet preferably has a thickness of 10g/m ² ～200g/m ² More preferably 15g/m ² ～150g/m ² Weight per unit area of (c).

[ examples ] A

The present disclosure is described below by way of examples, but the present disclosure is not limited to these examples.

< Structure (a) >

Production example A1

A sanitary napkin No. a1 according to embodiment 1 was produced. The liquid-permeable sheet for the absorption body and the temperature-sensitive body is a hot-air nonwoven fabric (basis weight: 30 g/m) ² ) The temperature-sensitive sheet is made of dust-free paper (weight per unit area: 45g/m ² Thickness: 1.0mm), and the absorbent body is composed of a mixture of pulp fibers and a super absorbent polymer wrapped with upper and lower sheets of tissue paper (basis weight: 200g/m ² Mass ratio of pulp fiber to super absorbent polymer: 10: 1, thickness: 2.0mm) and the liquid-impermeable sheet is made of a polyethylene film (weight per unit area: 24g/m ² ) And (4) forming. The 1 st temperature-sensitive composition is composed of vanillyl alcohol butyl ether (5.0 mass%) as a1 st temperature-sensitive agent and tri (caprylic/capric) glyceride as a solvent. The 2 nd temperature sensitive composition has the same composition as the 1 st temperature sensitive composition.

The temperature-sensitive sheet for the temperature-sensitive body comprises a1 st temperature-sensitive agent having a weight per unit area of 0.1g/m ² The 1 st temperature-sensitive composition was applied in such an amount that the weight per unit area of the 2 nd temperature-sensitive agent in the absorbent body was 0.5g/m ² Such an amount applies the 2 nd temperature sensitive composition.

Production example A2

A sanitary napkin No. a2 was produced in the same manner as in production example a1, except that the temperature-sensitive composition No. 1 was not applied to the temperature-sensitive sheet and the temperature-sensitive composition No. 2 was not applied to the absorbent member.

Production example A3

Except that the temperature-sensitive sheet was changed to 4 sheets of dust-free paper (basis weight: 45 g/m) ² Thickness: 1.0mm) was stacked on the other side, and a sanitary napkin No. a3 was produced in the same manner as in production example a 1.

Production example A4

A sanitary napkin No. a4 was produced in the same manner as in production example a3, except that the temperature-sensitive composition No. 1 was not applied to the temperature-sensitive sheet and the temperature-sensitive composition No. 2 was not applied to the absorbent member.

[ examples A1 and A2 and comparative examples A1 and A2]

The stiffness of the overlapping portion of the temperature-sensitive sheet and the stiffness of the overlapping portion of the absorbent body (sample centered on the center of the excretory opening contact region) were measured for each of the sanitary napkins No. a1 and No. a 2. The results are shown in table 1.

In addition, with respect to the stiffness of the overlapped portion of the temperature-sensitive sheet and the stiffness of the overlapped portion of the absorbent body, samples for measuring the stiffness were formed along the longitudinal direction of the absorbent article, respectively.

The physiological sanitary napkins No. a1 and No. a2 were worn by 10 female subjects, and the lower abdominal warmth, discomfort, and itching were evaluated by the following scores of 3 stages. The results are shown in table 1.

[ temperature feeling of the lower abdomen ]

2: the lower abdomen felt a temperature sensation.

1: the lower abdomen feels a little warmth.

0: the lower abdomen did not feel warm.

The results are shown in Table 1, in which the total score of 10 items is indicated by "O" in 15 to 20, Δ "in 9 to 14, and" X "in 0 to 8.

[ discomfort in the lower abdomen ]

2: the lower abdomen did not feel uncomfortable.

1: the lower abdomen felt a little discomfort.

0: the lower abdomen feels a sense of discomfort.

The results are shown in Table 1, in which 15 to 20 are indicated by O and 0 to 14 are indicated by X for the total score of 10.

[ Pruritus of the lower abdomen ]

2: no itching was felt in the lower abdomen.

1: the lower abdomen felt somewhat itchy.

0: itching was felt in the lower abdomen.

The total score of 10 items is indicated by "O" in 15 to 20 and "X" in 0 to 14, and the results are shown in Table 1.

[ TABLE 1]

	Example A1	Example A2	Comparative example A1	Comparative example A2
					Sanitary napkin	No.A1	No.A2	No.A3	No.A4
Weight per unit area/temperature-sensitive body (g/m) of the No. 1 temperature-sensitive agent ² )	0.1	-	0.1	-
					Weight per unit area/absorption body (g/m) of No. 2 temperature-sensitive agent ² )	0.5	-	0.5	-
Stiffness (mN) of overlapping portion of temperature-sensitive sheet	6.7	6.7	23.5	23.5
					Stiffness (mN) of the absorbent body overlap	20.2	20.2	20.2	20.2
Lower abdomen temperature	○	○△	○	○△
					Discomfort of the lower abdomen	○	○	×	×
Itching of the lower abdomen	○	○	×	×

< Structure (b) >

Production example B1

A sanitary napkin No. b1 according to embodiment 5 was produced in the same manner as in production example a 1.

Production example B2

Sanitary napkin No. B2 was produced in the same manner as in production example B1, except that the No. 2 temperature-sensitive composition was not applied to the absorbent core.

Production example B3

Except that the auxiliary sheet of the temperature-sensitive body is made of the 1 st temperature-sensitive agentIs 0.5g/m ² A sanitary napkin No. B3 was produced in the same manner as in production example B1, except that the 1 st temperature-sensitive composition was applied in such an amount and the 2 nd temperature-sensitive composition was not applied to the absorbent core.

The structures of sanitary napkins No. B1 to No. B3 are summarized in Table 2.

[ TABLE 2]

	Example B1	Comparative example B1	Comparative example B2
				Sanitary napkin	No.B1	No.B2	No.B3
Weight per unit area/temperature-sensitive body (g/m) of the No. 1 temperature-sensitive agent ² )	0.1	0.1	0.5
				Weight per unit area/absorption body (g/m) of No. 2 temperature-sensitive agent ² )	0.5	0	0
Itching of the lower abdomen	○	○	×
				Lower abdominal temperature	○	×	○

Example B1 and comparative examples B1 and B2

The physiological sanitary napkins nos. b1 to b3 were worn by 10 female subjects, and the pruritus of the lower abdomen and the feeling of warmth of the lower abdomen were evaluated by the following scores of 3 stages. The results are shown in Table 2.

[ Pruritus of the lower abdomen ]

2: no itching was felt in the lower abdomen at the initial stage of wearing.

1: the wearer feels a sense of discomfort in the lower abdomen at the initial stage of wearing.

0: itching was felt in the lower abdomen at the initial stage of wearing.

[ temperature feeling of the lower abdomen ]

2: the lower abdomen felt a temperature sensation.

1: the lower abdomen feels a little warmth.

0: the lower abdomen did not feel warm.

The results are shown in Table 2, in which 15 to 20, 9 to 14, and 0 to 8 are indicated by "O", Δ "and" X ", respectively, for the total of 10 items.

Description of the reference numerals

1. A sanitary napkin; 3. an absorption body; 5. a temperature-sensitive body; 7. a liquid-permeable sheet; 9. a liquid-impermeable sheet; 11. an absorbent body; 13. a temperature-sensitive sheet; 15. an overlapping portion; 17. 1, a temperature sensitive composition; 19. a2 nd temperature sensitive composition; 21. an excretory opening abutment region; 23. a drain opening abutment region adjacent to the region; 25. a temperature-sensitive sheet overlapping portion; 27. an absorbent body overlapping portion; 29. a central part of the temperature sensing body; 31. temperature sensingA peripheral portion of the main body; l, the length direction; w, width direction; t, the thickness direction; f ₁ A length direction 1 st fold axis; f ₂ A length direction 2 nd fold axis; f ₃ A1 st folding axis in the width direction; f ₄ And a width direction 2 nd folding axis.

Claims

1. An absorbent article having a longitudinal direction, a width direction and a thickness direction, comprising an absorbent main body and a temperature-sensitive main body, the absorbent main body comprising a liquid-permeable sheet, a liquid-impermeable sheet and an absorbent body disposed between the liquid-permeable sheet and the liquid-impermeable sheet, the temperature-sensitive main body being configured to abut against a lower abdomen of a wearer and to be disposed in front of the absorbent body in the longitudinal direction,

the absorbent article has the following structure (a) and structure (b):

(a) the temperature-sensitive body is provided with a temperature-sensitive sheet, and the stiffness of a portion of the temperature-sensitive sheet overlapping the temperature-sensitive sheet of the temperature-sensitive body in the thickness direction is lower than the stiffness of a portion of the temperature-sensitive sheet overlapping the absorbent body of the absorbent body in the thickness direction,

(b) the temperature-sensitive body holds a1 st temperature-sensitive agent, the absorption body holds a2 nd temperature-sensitive agent,

the 1 st temperature-sensitive agent has a weight per unit area that is 0.5 times or less the weight per unit area of the 2 nd temperature-sensitive agent, or the 1 st temperature-sensitive agent has a weight per unit area that is 1.3 times or more the weight per unit area of the 2 nd temperature-sensitive agent.

2. The absorbent article of claim 1, wherein,

the thickness of the temperature-sensitive sheet is smaller than the thickness of the absorbent body.

3. The absorbent article according to claim 1 or 2, wherein,

the temperature-sensitive body is divided into a temperature-sensitive body central portion overlapping with the temperature-sensitive sheet in the thickness direction and a temperature-sensitive body peripheral portion not overlapping with the temperature-sensitive sheet in the thickness direction, and the temperature-sensitive body peripheral portion has a lower rigidity than the temperature-sensitive body central portion.

4. The absorbent article according to claim 1 or 2, wherein,

the temperature-sensitive body is divided into a temperature-sensitive body central portion overlapping the temperature-sensitive sheet in the thickness direction and a temperature-sensitive body peripheral portion not overlapping the temperature-sensitive sheet in the thickness direction, and the temperature-sensitive body peripheral portion includes embossed portions disposed intermittently along the temperature-sensitive body peripheral portion in the liquid-permeable sheet and the liquid-impermeable sheet.

5. The absorbent article according to claim 1 or 2, wherein,

the absorption body is provided with an excretion opening contact region, and the absorption body holds the 2 nd temperature sensitive agent outside the excretion opening contact region in the width direction.

6. The absorbent article according to claim 1 or 2, wherein,

the absorption body holds the 2 nd temperature sensitive agent in the absorption body.

7. The absorbent article according to claim 1 or 2, wherein,

the absorption body holds the 2 nd temperature sensitive agent between the liquid-permeable sheet and the impermeable sheet.

8. The absorbent article according to claim 1 or 2, wherein,

the temperature-sensitive body includes the liquid-permeable sheet, the liquid-impermeable sheet, and an auxiliary sheet disposed between the liquid-permeable sheet and the liquid-impermeable sheet, and the temperature-sensitive body holds the 1 st temperature-sensitive agent in the auxiliary sheet.

9. The absorbent article according to claim 1 or 2, wherein,

the liquid-permeable sheet includes a material selected from the group consisting of a heat-generating material, a heat-insulating material, and a moisture-absorbing material, and any combination thereof.