TWI772504B - Warm items - Google Patents

Abstract

The present invention provides a warm-sensing article which is less likely to be felt by the wearer. The temperature-sensitive article of the present invention has the following structure. A warm-sensitive article (1) is a warm-sensitive article (1) comprising a liquid-permeable sheet (7) and a liquid-impermeable sheet (9), wherein the warm-sensitive article (1) has a warm-sensitive article containing a warm-sensitive solution In the area (31), the temperature-sensing solution includes: a warming-sensing agent for activating TRP ion channels, and a solvent, and the temperature-sensing area (31) is configured so as not to make the wearer feel itching.

Description

Warm items

The present invention relates to a temperature-sensitive article.

There are known absorbent articles that impart warmth to the wearer. For example, Patent Document 1 describes an absorbent article that is ideally disposable after use. The absorbent article contains external conditions that do not need to be felt by the wearer for the purpose of improving comfort, and can The agent that feels conveyed to the wearer. In addition, paragraph [0040] of Patent Document 1 describes a warming agent as an ideal agent, and the warming agent can stimulate the temperature receptor (also known as the temperature receptor) without changing the temperature of the article on the wearer's body surface. That is, warm). [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Publication No. 2004-528090

[The problem to be solved by the invention]

After confirmation by the inventors of the present application, it was found that the warming agent described in Patent Document 1 tends to take longer to feel a desired temperature (warm feeling time) than exothermic agents such as iron powder, and Wearers tend to feel itchy. Therefore, an object of the present invention is to provide a warm-sensing article that the wearer does not easily feel itching. [Means for solving problems]

The inventors of the present application discovered a temperature-sensitive article comprising a liquid-permeable sheet and a liquid-impermeable sheet, wherein the temperature-sensitive article includes a temperature-sensitive region containing a temperature-sensitive solution, and the temperature-sensitive solution It contains: a warming agent for activating TRP ion channels, and a vehicle, and the aforementioned warming area is configured to make it difficult for the wearer to feel itching. [Effect of invention]

The user of the thermal article of the present invention is less likely to feel itching.

[Form for carrying out the invention]

The present invention includes the following aspects. [Aspect 1] A warm-sensing article is provided with a liquid-permeable sheet and a liquid-impermeable sheet, and is characterized by: The above-mentioned temperature-sensing article has a temperature-sensing region containing a temperature-sensing solution, the temperature-sensing solution comprising a temperature-sensing agent for activating TRP ion channels, and a solvent, The above-mentioned configuration of the warm-sensing area makes it difficult for the wearer to feel itching.

In the above-mentioned warm-sensing article, the above-mentioned structure of the warm-sensing area does not easily make the wearer feel itching, so the wearer is less likely to feel itching.

Furthermore, the present invention further includes the following inventions A (aspect A group), invention B (aspect B), and invention C (aspect C group). <Invention A (Aspect Group A)> [Aspect A1] A warm-sensing article is provided with a liquid-permeable sheet and a liquid-impermeable sheet, and is characterized by: The above-mentioned temperature-sensing article includes a temperature-sensing region containing a temperature-sensing solution containing a temperature-sensing agent for activating TRP ion channels, a cooling-sensing agent for activating TRP ion channels, and a vehicle.

The inventors of the present invention have confirmed that the initial stage of installation, specifically, the time until a desired temperature is felt (hereinafter, referred to as the following: This time, referred to as "warm feeling time") tends to become longer, and it is known that the wearer tends to feel itching during this warm feeling time.

Because the above-mentioned temperature-sensing article is provided with a temperature-sensing area containing a temperature-sensing solution, and the temperature-sensing solution includes: a temperature-sensing agent for activating TRP ion channels, a cooling-sensing agent for activating TRP ion channels, and a solvent, it is installed with During the above-mentioned warm feeling time, the user is less likely to feel itching in the part that is in contact with the warm feeling area and its surrounding area. In addition, as a result of activating the TRP ion channel of the warming agent-contacting portion of the skin of the makeup wearer by the aforementioned warming agent, it is expected that heat is generated from the warming agent-contacting portion via the sympathetic nervous system, and It raises the temperature of the part which the warming agent of the wearer's skin comes into contact with.

[Aspect A2] The temperature-sensing article according to aspect A1, wherein the warming-sensing agent is an agent that acts on the TRPV1 receptor, and the cooling-sensing agent is an agent that acts on the TRPM8 receptor. The above-mentioned warm-sensing article is an agent that acts on TRPV1 receptors because of a warm-sensing agent, and a cooling-sensing agent is an agent that acts on TRPM8 receptors. When used, the user feels the activation temperature as TRPM8 receptors at first. A temperature of 25 to 28° C., which is the critical value, and then a temperature exceeding 43° C., which is the critical value of the activation temperature of the TRPV1 receptor, is felt. As a result, the above-mentioned warm feeling article can feel a cool feeling within the above-mentioned warm feeling time period, and the wearer is less likely to feel itching, and can feel a sufficient warm feeling after the above-mentioned warm feeling time period.

[Aspect A3] The temperature-sensitive article according to aspect A1 or A2, wherein the solvent is a lipophilic solvent. The inventors of the present application confirmed that when the solvent constituting the warming solution is a lipophilic solvent, the above-mentioned warming sensation time tends to be longer than when the solvent constituting the warming solution is a hydrophilic solvent, such as water, And it turns out that itching is easily felt because of this long warm feeling time. Since the above-mentioned warm-feeling article has a warm-feeling area containing a warm-feeling solution, and the warm-feeling solution includes a predetermined warming-feeling agent and a predetermined cooling-feeling agent, the wearer is less likely to feel itching during the above-mentioned warm feeling time. Furthermore, when the temperature-sensitive article is an absorbent article provided with an absorber, since the solvent is a lipophilic solvent, the temperature-sensitive solution in the temperature-sensitive region does not easily move to the absorber, and it is necessary to impart a warm feeling to the wearer. The temperature sensing efficiency of the solution is not easily reduced.

[Aspect A4] The temperature-sensing article according to any one of Aspects A1 to A3, wherein the warming-sensing solution contains the warming-sensing agent and the cooling-sensing agent in a mass ratio of 20:1 to 1:10. Since the warm feeling solution contains the warming agent and the cooling agent in a predetermined ratio, the above-mentioned warm feeling article makes it difficult for the wearer to feel itching during the warm feeling time, and is less likely to feel a cool feeling and easily feel a warm feeling.

[Aspect A5] The temperature-sensitive article according to any one of aspects A1 to A4, wherein the temperature-sensitive article is an absorbent article having a thickness direction and a width direction, and further includes the liquid-permeable sheet and the liquid-impermeable sheet Between the absorber, the said temperature-sensitive area|region is arrange|positioned in the position which does not overlap with the said absorber in the said thickness direction.

The heat-sensing agent is arranged at a position that does not overlap with the absorber in the thickness direction of the temperature-sensing article (absorbent article), that is, if it is arranged in the peripheral portion of the excretion port abutting region, it is disposed in the excretion port abutting region. Compared with the case where there is a warming agent, the wearer tends to feel itching more easily during the warming sensation time. Since the position where the temperature-sensing article (absorbent article) and the absorber do not overlap in the thickness direction has a temperature-sensing region, it is possible to impart warmth to the lower abdomen of the wearer (when the wearer is a woman, the uterus, etc.). It can make the wearer not easily feel itching during the above-mentioned warm feeling time.

[Aspect A6] The temperature-sensitive article according to aspect A5, wherein the temperature-sensitive region is located at a position corresponding to the lower abdomen of the wearer, and is arranged in the wider region in the width direction than the absorber. Since the temperature-sensing article is provided with a temperature-sensing region in a predetermined range, the portion corresponding to the wearer's uterus can be warmed, but the wearer is less likely to feel itching.

[Aspect A7] The temperature-sensitive article according to aspect A6, wherein the temperature-sensitive article is folded in the longitudinal direction along the widthwise fold axis extending in the widthwise direction, and the widthwise fold axis is in the unfolded state of the temperature-sensitive article , which are arranged to overlap with the temperature sensitive region in the thickness direction.

In the above-mentioned temperature-sensitive article, the folding axis in the width direction is arranged so as to overlap with the temperature-sensitive region in the thickness direction in the unfolded state of the temperature-sensitive article. This is because the material density of the material (liquid-permeable sheet, auxiliary sheet, etc.) of the portion of the temperature-sensitive area that overlaps the width-direction fold axis does not overlap with the width-direction fold axis of the temperature-sensitive area. The material density of the non-repetitive part of the folded axis in the width direction is relatively high, so the amount (basic weight) of the temperature-sensitive solution in the repeated part of the folded axis in the width direction is higher than that of the non-repetitive part of the folded axis in the width direction. The amount (basis weight) tends to become more.

Therefore, the above-mentioned temperature-sensitive article is the overlapping part of the transverse axis of the temperature-sensitive area, which can be given to the pelvic lymph nodes (internal iliac lymph nodes, obturator lymph nodes, external iliac lymph nodes, anterior sacral lymph nodes, common iliac lymph nodes, parametrial lymph nodes, sacral lymph nodes, etc. Lymph nodes, supra-inguinal lymph nodes, para-aortic lymph nodes, etc.), groin lymph nodes (superficial inguinal lymph nodes, deep inguinal lymph nodes, etc.) are warmed, and the temperature of these is increased, and it can be expected to impart a massage effect to them.

[Aspect A8] The temperature-sensitive article according to aspect A6 or A7, wherein the temperature-sensitive article is folded in the width direction at a pair of longitudinal fold axes extending in the longitudinal direction, and the pair of longitudinal fold axes In the unfolded state of the said temperature-sensitive article, it is arrange|positioned so that it may become the outer side of the said width direction rather than the said absorber, and overlap with the said temperature-sensitive area|region in the said thickness direction.

In the above-mentioned temperature-sensitive article, the pair of longitudinal folding axes are arranged to overlap with the temperature-sensitive region in the thickness direction in the unfolded state of the temperature-sensitive article. The material density of the material (liquid-permeable sheet, auxiliary sheet, etc.) of the portion of the temperature-sensitive area that overlaps with each of the pair of longitudinal folded axes overlaps with the temperature-sensitive area. The material density of a pair of non-repetitive folded axes in the long-side direction is relatively high, so the amount (basic weight) of the temperature-sensitive solution in the overlapping parts of the long-side folded axes has a longer side. There is a tendency that the amount (basis weight) of the temperature-sensing solution in the portion where the direction folding axis does not overlap increases.

Therefore, the above-mentioned temperature-sensing article is the overlapping part of the longitudinally folded axis of the temperature-sensing region, and can be given to the pelvic lymph nodes (internal iliac lymph nodes, obturator lymph nodes, external iliac lymph nodes, anterior sacral lymph nodes, common iliac lymph nodes, parauterine lymph nodes, sacral lymph nodes, etc. Lymph nodes, supra-inguinal lymph nodes, para-aortic lymph nodes, etc.), groin lymph nodes (superficial inguinal lymph nodes, deep inguinal lymph nodes, etc.) are warmed, and the temperature of these is increased, and it can be expected to impart a massage effect to them.

[Aspect A9] The temperature-sensitive article according to any one of aspects A5 to A8, wherein the temperature-sensitive article can be selected from the group consisting of sanitary napkins, underwear-type sanitary napkins, and disposable diapers. Since the above-mentioned warm-sensing article can be selected from the group consisting of sanitary napkins, underwear-type sanitary napkins, and disposable diapers, the above-mentioned warm-sensing articles exhibit absorbing performance while suppressing wear during the warm feeling time. The tickling of the user's lower abdomen can give a warm feeling to the user's lower abdomen.

[Aspect A10] The temperature-sensitive article according to any one of aspects A1 to A9, wherein the temperature-sensitive article does not contain a heat generating agent. Since the above-mentioned temperature-sensitive articles do not contain exothermic agents, even when the temperature-sensitive articles are used for a long time, it is not easy for the user to suffer from low-temperature burns.

<Invention B (Aspect B group)> [Aspect B1] A warm-sensing article is provided with a liquid-permeable sheet and a liquid-impermeable sheet, and is characterized by: The above-mentioned temperature-sensing article has a temperature-sensing region containing a temperature-sensing solution, the temperature-sensing solution comprising a temperature-sensing agent for activating TRP ion channels, and a solvent, The temperature-sensing region is divided into: a temperature-sensing application portion containing the temperature-sensing solution, and a temperature-sensing solution that is arranged around the temperature-sensing portion and contains the temperature-sensing solution having a smaller basis weight than the temperature-sensing portion. The surrounding area is warm.

The inventors of the present invention have confirmed that the time until a desired temperature is sensed (warm feeling time) tends to become longer for a warm-sensing article containing a heat-sensing agent, and it is known that it is easy for the user to wear it during the warm-sensing time Feel itching. In addition, it was found that the wearer is more likely to feel itching during the above-mentioned warm feeling time, especially in the vicinity of the boundary between the warm area and other areas (that is, the vicinity of the outer edge of the warm area).

The above-mentioned temperature-sensing article is provided with a temperature-sensing area containing a temperature-sensing solution, and the temperature-sensing solution contains a temperature-sensing agent that activates TRP ion channels, and the temperature-sensing area is divided into a temperature-sensing application portion containing the temperature-sensing solution, and Since the temperature-sensing peripheral portion is arranged around the temperature-sensing application portion and contains the warming-sensing solution having a smaller basis weight than the warming-sensing portion, the warming-sensing effect of the warming agent changes in the vicinity of the outer edge of the temperature-sensing region. It is small, and the wearer hardly feels itching during the above-mentioned warm feeling time, especially in the vicinity of the outer edge of the warm feeling area. In addition, as a result of activating the TRP ion channel of the warming agent-contacting portion of the skin of the makeup wearer by the aforementioned warming agent, it is expected that heat is generated from the warming agent-contacting portion via the sympathetic nervous system, and It raises the temperature of the part which the warming agent of the wearer's skin comes into contact with.

[Aspect B2] The temperature-sensing article according to aspect B1, wherein the temperature-sensing region is constituted by a fabric, and the fiber density of the fabric in the temperature-sensing application portion is higher than the fiber density of the fabric in the temperature-sensing peripheral portion.

In the above-mentioned temperature-sensing article, the temperature-sensing region is composed of fabric, and the fiber density of the fabric of the temperature-sensing application portion is higher than that of the fabric of the temperature-sensing peripheral portion, so it is easy to maintain the basis weight of the temperature-sensing solution in the temperature-sensing application portion. A state in which the basis weight of the warm feeling solution is larger than that of the warm feeling peripheral portion. Therefore, even if the wearer applies body pressure to the temperature-sensitive article during use of the above-mentioned temperature-sensitive article, and the temperature-sensitive solution is in the plane direction of the temperature-sensitive article, the basis weight of the temperature-sensitive solution in the temperature-sensitive application portion can be easily It returned to the state with more basis weight than the warm feeling solution of the warm feeling peripheral part. Furthermore, when manufacturing the above-mentioned warm-sensitive articles, even when the warm-sensitive solution is uniformly applied to the warm-sensitive region, the basis weight of the warm-sensitive solution in the warm-sensitive applicable portion is higher than the warm-sensitive solution in the warm-sensitive peripheral portion due to capillary phenomenon. Therefore, the above-mentioned temperature-sensitive article can be easily formed. According to the above, in the above-mentioned warm-sensing article, the wearer is less likely to feel itching during the above-mentioned warm-feeling time.

[Aspect B3] The temperature-sensitive article according to aspect B1 or B2, wherein the temperature-sensitive region includes a plurality of embossed portions in the temperature-sensitive application portion and the temperature-sensitive peripheral portion, respectively, and the plurality of embossings in the temperature-sensitive application portion Each of the embossing strengths of the heat-sensing peripheral portion is higher than the embossing strengths of the plurality of embossing portions in the temperature-sensing peripheral portion, or the number density of the plurality of embossing portions in the warmth-sensing application portion is higher than that of the warmth-sensing peripheral portion. The number density of the plurality of embossed portions in the portion is higher, or the area ratio of the plurality of embossed portions in the temperature sensitive application portion is higher than the area of the plurality of embossed portions in the temperature sensitive peripheral portion. higher rate.

The above-mentioned temperature-sensing article has a predetermined embossing strength, number density or area ratio in the temperature-sensing application part and the temperature-sensing peripheral part of the temperature-sensing region, so it is easy to keep the basis weight of the temperature-sensing solution in the temperature-sensing application part relatively warm. A state in which the basis weight of the temperature-sensing solution in the peripheral portion is larger. In addition, even if the wearer applies body pressure to the temperature-sensitive article during use of the temperature-sensitive article, and the temperature-sensitive solution is in the plane direction of the temperature-sensitive article, the basis weight of the temperature-sensitive solution in the temperature-sensitive application portion can be easily It returned to the state with more basis weight than the warm feeling solution of the warm feeling peripheral part. Furthermore, when manufacturing the above-mentioned warm-sensitive article, even when the warm-sensitive solution is uniformly applied to the warm-sensitive region, the basis weight of the warm-sensitive solution in the warm-sensitive application portion can be higher than that of the warm-sensitive solution in the warm-sensitive peripheral portion due to the capillary phenomenon. Basis weight more state. According to the above, in the above-mentioned warm-sensing article, the wearer is less likely to feel itching during the above-mentioned warm-feeling time.

[Aspect B4] The temperature-sensitive article according to any one of aspects B1 to B3, wherein the temperature-sensitive article is an absorbent article having a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, and further includes the liquid permeation device In the absorber between the elastic sheet and the liquid-impermeable sheet, the temperature-sensitive region is arranged at a position that does not overlap with the absorber in the thickness direction.

The heat-sensing agent is arranged at a position that does not overlap with the absorber in the thickness direction of the temperature-sensing article (absorbent article), that is, if it is arranged in the peripheral portion of the excretion port abutting region, it is disposed in the excretion port abutting region. Compared with the case where there is a warming agent, the wearer does not tend to feel itching easily during the warming sensation time. Since the temperature-sensing region is arranged at a position where the temperature-sensing article (absorbent article) and the absorber do not overlap in the thickness direction, it can be applied to the lower abdomen of the wearer (when the wearer is a woman, the uterus, etc.). It has a warm feeling, and can make it difficult for the wearer to feel itching during the above-mentioned warm feeling time.

[Aspect B5] The temperature-sensitive article according to aspect B4, wherein the temperature-sensitive region is arranged at a position corresponding to the lower abdomen of the wearer and is wider in the width direction than the absorber. Since the temperature-sensing article is provided with a temperature-sensing region in a predetermined range, the portion corresponding to the wearer's uterus can be warmed, but the wearer is less likely to feel itching.

[Aspect B6] The temperature-sensitive article according to aspect B5, wherein the temperature-sensitive article is folded in the longitudinal direction along the widthwise fold axis extending in the widthwise direction, and the widthwise fold axis is in the unfolded state of the temperature-sensitive article , which are arranged to overlap with the temperature sensitive region in the thickness direction.

In the above-mentioned temperature-sensitive article, the folding axis in the width direction is arranged so as to overlap with the temperature-sensitive region in the thickness direction in the unfolded state of the temperature-sensitive article. This is because the material density of the material (liquid-permeable sheet, auxiliary sheet, etc.) of the portion of the temperature-sensitive area that overlaps the width-direction fold axis does not overlap with the width-direction fold axis of the temperature-sensitive area. The material density of the non-repetitive part of the folded axis in the width direction is relatively high, so the amount (basic weight) of the temperature-sensitive solution in the repeated part of the folded axis in the width direction is higher than that of the non-repetitive part of the folded axis in the width direction. The amount (basis weight) tends to become more.

Therefore, the above-mentioned temperature-sensitive article is the overlapping part of the transverse axis of the temperature-sensitive area, which can be given to the pelvic lymph nodes (internal iliac lymph nodes, obturator lymph nodes, external iliac lymph nodes, anterior sacral lymph nodes, common iliac lymph nodes, parametrial lymph nodes, sacral lymph nodes, etc. Lymph nodes, supra-inguinal lymph nodes, para-aortic lymph nodes, etc.), groin lymph nodes (superficial inguinal lymph nodes, deep inguinal lymph nodes, etc.) are warmed, and the temperature of these is increased, and it can be expected to impart a massage effect to them.

[Aspect B7] The temperature-sensitive article according to aspect B5 or B6, wherein the temperature-sensitive article is folded in the width direction at a pair of longitudinal fold axes extending in the longitudinal direction, and the pair of longitudinal fold axes In the unfolded state of the said temperature-sensitive article, it is arrange|positioned so that it may become the outer side of the said width direction rather than the said absorber, and overlap with the said temperature-sensitive area|region in the said thickness direction.

In the above-mentioned temperature-sensitive article, the pair of longitudinal folding axes are arranged to overlap with the temperature-sensitive region in the thickness direction in the unfolded state of the temperature-sensitive article. The material density of the material (liquid-permeable sheet, auxiliary sheet, etc.) of the portion of the temperature-sensitive area that overlaps with each of the pair of longitudinal folded axes overlaps with the temperature-sensitive area. The material density of a pair of non-repetitive folded axes in the long-side direction is relatively high, so the amount (basic weight) of the temperature-sensitive solution in the overlapping parts of the long-side folded axes has a longer side. There is a tendency that the amount (basis weight) of the temperature-sensing solution in the portion where the direction folding axis does not overlap increases.

Therefore, the above-mentioned temperature-sensing article is the overlapping part of the longitudinally folded axis of the temperature-sensing region, and can be given to the pelvic lymph nodes (internal iliac lymph nodes, obturator lymph nodes, external iliac lymph nodes, anterior sacral lymph nodes, common iliac lymph nodes, parauterine lymph nodes, sacral lymph nodes, etc. Lymph nodes, supra-inguinal lymph nodes, para-aortic lymph nodes, etc.), groin lymph nodes (superficial inguinal lymph nodes, deep inguinal lymph nodes, etc.) are warmed, and the temperature of these is increased, and it can be expected to impart a massage effect to them.

[Aspect B8] The temperature-sensitive article according to any one of aspects B4 to B7, wherein the solvent is a lipophilic solvent.

The inventors of the present application confirmed that when the solvent constituting the warming solution is a lipophilic solvent, compared with the case where the solvent constituting the warming solution is a hydrophilic solvent, such as water, the above-mentioned warming sensation time tends to be longer. And it turns out that itching is easily felt because of this long warm feeling time. Since the above-mentioned warm-sensing article includes a warm-sensing region, and the warm-sensing region includes a predetermined warm-sensing application portion and a predetermined warm-sensing peripheral portion, the wearer is less likely to feel itching during the warm-sensing time. In addition, when the temperature-sensing article is an absorbent article provided with an absorber, since the solvent is a lipophilic solvent, the temperature-sensing solution does not easily move to the absorber, and it is necessary to impart a warm feeling of a warm-sensing agent to the wearer. Efficiency is not easily reduced.

[Aspect B9] The warmth-sensing article according to any one of aspects B4 to B8, wherein the absorbent article can be selected from the group consisting of sanitary napkins, underwear-type sanitary napkins, and disposable diapers. Since the above-mentioned warm-sensing article can be selected from the group consisting of sanitary napkins, underwear-type sanitary napkins, and disposable diapers, the above-mentioned warm-sensing article exhibits absorbing performance and suppresses wear during the warm feeling time. The tickling of the user's lower abdomen can give a warm feeling to the user's lower abdomen.

[Aspect B10] The temperature-sensing article according to any one of aspects B1 to B9, wherein the temperature-sensing agent is an agent that acts on the TRPV1 receptor. Since the above-mentioned absorbent article acts on the TRPV1 receptor, the wearer can feel a temperature exceeding 43°C, which is the activation temperature threshold of the TRPV1 receptor, at the time of use.

[Aspect B11] The temperature-sensitive article according to any one of aspects B1 to B10, wherein the temperature-sensitive article does not contain a heat generating agent. Since the above-mentioned temperature-sensitive articles do not contain exothermic agents, even when the temperature-sensitive articles are used for a long time, it is not easy for the user to suffer from low-temperature burns.

<Invention C (Aspect C group)> [Aspect C1] An absorbent article having a longitudinal direction, a lateral direction, and a thickness direction, and comprising a liquid-permeable sheet, a liquid-impermeable sheet, and a pair of liquid-permeable sheets disposed between them and extending in the longitudinal direction. The absorbent article of the absorbent body of the side edge is characterized by: The said absorbent article is divided into the overlapping area which overlaps with the said absorber in the said thickness direction, and the non-overlapping area which does not overlap with the said absorber in the said thickness direction, The absorbent article is provided with a pair of side edge regions, and each of the side edge regions includes each side edge of the pair of side edges, In each side edge region of the pair of side edge regions, (i) there are an inner temperature-sensitive region arranged in the overlapping region and an outer temperature-sensitive region arranged in the non-overlapping region, (ii) both of the above-mentioned inner temperature-sensitive region and the above-mentioned outer temperature-sensitive region contain a temperature-sensing solution containing a temperature-sensing agent for activating TRP ion channels, and a solvent, (iii) The basis weight of the temperature-sensitive solution in the outer temperature-sensitive region is smaller than the basis weight of the temperature-sensitive solution in the inner temperature-sensitive region.

Absorbent articles containing a drug that imparts warmth to the wearer, for example, to warm the wearer's (female) uterus for alleviating menstrual pain, and to warm the prostate (male) for the prevention of prostatic hyperplasia, prostatitis, prostate cancer, etc. When used, it is desirable to arrange the drug system across both the overlapping region overlapping with the absorber in the thickness direction (of the absorbent article) and the non-overlapping region not overlapping with the absorber in the thickness direction (of the absorbent article). . In addition, from the viewpoint of preventing low-temperature burns and the like, the above-mentioned drug is not a heat-generating agent, but is preferably a warming-sensing agent that activates the TRP ion channel of the wearer.

The inventors of the present invention have found that when a warming agent is used to impart a warm feeling to the wearer, the wearer tends to feel itching if the warming action of the warming agent differs in two parts close to the wearer's skin. In addition, the inventors of the present invention found that the warming effect of the warming agent differs not only by factors on the side of the warming agent but also by factors on the wearer's side, for example, the moisture content of the wearer's skin. In particular, in the overlapping area with the absorber of the absorbent article, since the absorber easily absorbs moisture, the moisture content of the skin of the wearer who is in contact with the overlapping area is unlikely to increase, and the wearer may not feel it relatively easily. Tendency to feel warm. On the other hand, in the non-overlapping region that does not overlap with the absorber of the absorbent article, the absorption of moisture by the absorber is small, so the moisture content of the wearer's skin in contact with the non-overlapping region tends to increase. , and the wearer tends to feel the warmth relatively easily.

In the above-mentioned absorbent article, in each of the pair of side edge regions, the basis weight of the warmth-sensing solution arranged in the outer warm-sensing region of the overlapping region where the wearer does not easily feel the sensation of warmth is higher than that of the heat-sensing solution arranged on the side edge region of the pair of side edge regions. In the non-repetitive region where the user can easily feel the warmth, the basis weight of the temperature-sensing solution in the inner temperature-sensing region is less, so it is difficult for the wearer to feel the warming-sensing effect between the inner temperature-sensing region and the outer temperature-sensing region difference, and it is not easy for the user to feel itching. In addition, as a result of activating the TRP ion channel at the contact site of the skin of the wearer who is in contact with the heat-sensing agent by the warming-sensing action of the aforementioned warming agent, it is expected that heat is generated from the contact site via the sympathetic nervous system, and The temperature of the contact part of the wearer's skin is raised.

[Aspect C2] The absorbent article according to aspect C1, wherein in each region of the pair of side edge regions, the inner heat-sensitive region and the outer heat-sensitive region sandwich each side edge of the pair of side edges therebetween and adjacent. In the above-mentioned absorbent article, in each region of the pair of side edge regions, since the inner heat-sensing region and the outer heat-sensing region are sandwiched and contacted by the side edges, it is difficult for the wearer to feel the inner warm feeling. It is not easy for the wearer to feel itching due to the difference in the thermal effect between the area and the external thermal area.

[Aspect C3] In the absorbent article according to aspect C1 or C2, in each of the pair of side edge regions, the inner temperature-sensitive region and the outer temperature-sensitive region are arranged on the liquid-permeable sheet.

In the above-mentioned absorbent article, since the inner warm-sensitive region and the outer warm-sensitive region are arranged on the liquid-permeable sheet in each region of the pair of side edge regions, the wearer can easily feel a warm feeling at the initial stage of wearing. Moreover, since the said absorbent article has not arrange|positioned the inside temperature sensitive area in an absorber, it is hard to inhibit the absorbency of an absorber by a warm solution.

[Aspect C4] The absorbent article according to any one of aspects C1 to C3, wherein the absorbent article includes a central temperature-sensitive area between the pair of side edge areas, the central temperature-sensitive area contains the temperature-sensitive solution, and the The basis weight of the temperature-sensitive solution in the central temperature-sensitive region is larger than the basis weight of the temperature-sensitive solution in each region of the inner warm-sensitive region of the pair of side edge regions.

When an absorbent article is attached, there is a tendency that a lower pressure (installation pressure, etc.) is applied to the center portion in the widthwise direction of the absorber than the side edge portions of the absorber in the widthwise direction. The above-mentioned absorbent article, the basis weight of the temperature-sensing solution in the central temperature-sensing region where pressure is not easily applied during wear is higher than the warmth sensation in each region of the inner warm-sensing region of a pair of side edge regions where pressure is easily exerted during wearing The basis weight of the solution is more. Therefore, the wearer can easily feel the warm feeling from the absorber to the side edge regions, and it is difficult for the wearer to feel the difference in the warm feeling effect between the central warm feeling area, the inner warm feeling area, and the outer warm feeling area. The wearer feels itching.

[Aspect C5] The absorbent article according to aspect C4, wherein the center temperature-sensitive region is adjacent to the inner temperature-sensitive region of each region of the pair of side edge regions.

In the above-mentioned absorbent article, since the central warmth-sensing region is adjacent to the inner warmth-sensing region of each region of the pair of side edge regions, the wearer cannot easily feel the warmth-sensing effect between the central warmth-sensing region and the inner warmth-sensing region. The difference is not easy to make the user feel itchy.

[Aspect C6] The absorbent article according to aspect C4 or C5, wherein the central temperature-sensitive region is arranged on the liquid-permeable sheet, or an auxiliary sheet arranged between the liquid-permeable sheet and the absorber. In the above-mentioned absorbent article, since the central warmth-sensing region is arranged on the liquid-permeable sheet or a predetermined auxiliary sheet, the wearer can feel a warm feeling in the initial stage of wearing. Moreover, since the said absorbent article does not arrange|position the center temperature sensitive area in an absorber, it is hard to inhibit the absorbency of an absorber by a warm solution.

[Aspect C7] The absorbent article according to any one of aspects C1 to C6, wherein the temperature-sensing agent is an agent that acts on the TRPV1 receptor.

Since the above-mentioned absorbent article acts on the TRPV1 receptor, the wearer can feel a temperature exceeding 43°C, which is the activation temperature threshold of the TRPV1 receptor, at the time of use. As a result, the said absorbent article can make the wearer feel a sufficient warm feeling.

[Aspect C8] The absorbent article according to any one of aspects C1 to C7, wherein the solvent is a lipophilic solvent.

The inventors of the present application confirmed that when the solvent constituting the warming solution is a lipophilic solvent, compared with the case where the solvent constituting the warming solution is a hydrophilic solvent, such as water, it takes time to feel a desired temperature (warm The heat feeling time) tended to be longer, and it was found that the itching was easily felt due to the long warm feeling time.

Since the above-mentioned absorbent article has the predetermined inner warmth-sensing area and outer-side warmth-sensing area, the wearer is less likely to feel itching during the above-mentioned warm feeling time. In addition, since the solvent is a lipophilic solvent, the temperature-sensing solution in the inner and outer temperature-sensing regions does not easily move to the absorber, and the temperature-sensing efficiency of the warming solution that must impart a warm feeling to the wearer is unlikely to decrease.

[Aspect C9] The absorbent article according to any one of Aspects C1 to C8, wherein the absorbent article can be purchased from sanitary napkins, panty-type sanitary napkins, sanitary pads with wings, and disposable diapers. Formed group selection.

The above-mentioned absorbent article can be selected from the group consisting of sanitary napkins, underwear-type sanitary napkins, sanitary pads with wings, and disposable diapers, so it can suppress itching while exhibiting absorbent performance. , which can give the user a sense of warmth.

[Aspect C10] The absorbent article according to any one of aspects C1 to C9, wherein the absorbent article does not contain a heat generating agent. Since the above-mentioned absorbent article does not contain a heat generating agent, even if the absorbent article is used for a long time, it is not easy for the wearer to suffer from low temperature burns.

<Invention A> Hereinafter, the temperature-sensitive article of the present invention (Invention A) will be described in detail. 1 to 3 are diagrams for explaining one of the embodiments according to the present invention (Invention A) (hereinafter referred to as "first embodiment") for sanitary napkin 1 as a warmth-sensing article. In addition, in the following, only "the sanitary napkin according to the first embodiment as a warmth-sensing article" may be referred to as "the sanitary napkin according to the first embodiment". Specifically, FIG. 1 is a plan view of the sanitary napkin 1 according to the first embodiment. FIG. 2 is an exploded perspective view of the sanitary napkin 1 according to the first embodiment. FIG. 3 is a view showing a state in which the sanitary napkin 1 is attached.

The sanitary napkin 1 according to the first embodiment has a longitudinal direction L, a widthwise direction W, and a thickness direction T that are orthogonal to each other, and includes an absorbent body 3 arranged ahead of the longitudinal direction L relative to the absorbent body 3 The temperature sensor body 5. The sanitary napkin 1 includes, in the absorbent body 3, a liquid-permeable sheet 7 that is in contact with the wearer's skin during wearing, a liquid-impermeable sheet 9 that is brought into contact with clothing 19 during wearing, and a The absorber 11 between the liquid-permeable sheet 7 and the liquid-impermeable sheet 9 . In addition, the sanitary napkin 1 includes, in the temperature-sensing body 5, a liquid-permeable sheet 7 that is in contact with the wearer's skin during wearing, a liquid-impermeable sheet 9 that abuts on clothing 19 during wearing, and Also, the auxiliary sheet 13 and the shape maintaining member 15 are arranged between the liquid-permeable sheet 7 and the liquid-impermeable sheet 9 . The shape maintaining member 15 is arranged on the liquid-impermeable sheet 9 side rather than the auxiliary sheet 13 .

In addition, 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 an integral sheet formed of non-woven fabric. In addition, the liquid-impermeable sheet 9 of the absorption body 3 and the liquid-impermeable sheet 9 of the temperature-sensitive body 5 are also constituted by an integral sheet. In addition, a part of the absorber 11 of the absorber body 3 and the shape retaining member 15 of the temperature-sensing body 5 are partially overlapped in the thickness direction T in the overlapping part 17, and the absorber 11 is arranged on the shape retaining member in the overlapping part 17 15 is closer to the position of the liquid-permeable sheet 7 .

The sanitary napkin 1 is provided with the adhesive portion 21 for fixing the sanitary napkin 1 to the wearer's clothing 19 on both the absorbent body 3 and the warmth-sensing body 5 . One surface of the adhesive portion 21 is fixed to the liquid-impermeable sheet 9 , and the other surface is temporarily fixed to the inner surface of the releasable packaging sheet 29 .

When the sanitary napkin 1 is not in use, it has a first folding axis F ₁ in the longitudinal direction and a second folding axis F ₂ in the longitudinal direction extending in the longitudinal direction L together with the packaging sheet 29 , and a folding axis extending in the width direction W. The first folding axis F ₃ in the widthwise direction, the second folding axis _F4 in the widthwise direction, and the third folding axis _F5 in the widthwise direction are folded as base axes to form an individual package (not shown) of the sanitary napkin 1 . . Moreover, the width direction 1st folding axis F3, the width direction 2nd folding axis _F4 , and the width direction _3rd folding axis _F5 are arrange|positioned at the front, the center, and the back of the sanitary napkin 1, respectively.

Moreover, the width direction 1st folding axis F3 is arrange|positioned so that it may overlap in the thickness direction T with the auxiliary sheet ₁₃ (the temperature sensitive area 31 mentioned later) in the unfolded state of the sanitary napkin 1 and the wrapping sheet 29. The _first folding axis F1 in the longitudinal direction and the _second folding axis F2 in the longitudinal direction are arranged and assisted in the unfolded state of the sanitary napkin 1 and the packaging sheet 29, although they do not overlap in the thickness direction T of the absorber 11. The sheets 13 (temperature sensitive regions 31 to be described later) overlap in the thickness direction T. As shown in FIG.

The individual packaging body of the sanitary napkin ₁ is based on the first folding axis F1 in the longitudinal direction and the _second folding axis F2 in the longitudinal direction as the base axis, and the sanitary napkin 1 is used as the inner side and the width direction W is folded. The sanitary napkin 1 and the packaging sheet 29 are then folded in the longitudinal direction L with the sanitary napkin 1 as the inner side using the first folding axis F3 in the widthwise direction and the _third folding axis _F5 in the widthwise direction as the base axis, and then, It is formed by folding in the longitudinal direction L with the sanitary napkin 1 as the inside with the second folding axis _F4 in the widthwise direction as the base axis.

In addition, the sanitary napkin 1 includes a pair of wing parts 23 for fixing the sanitary napkin 1 to the clothing 19, a sealing part 25, an embossed part 27, and the like, but since it is well known in the technical field, the Description is omitted.

In the sanitary napkin 1, the absorption body 3 and the temperature-sensing body 5 are arranged so that the excretory opening contact area (not shown) of the absorber 11 of the absorption body 3 is in contact with the excretion opening contact area of the wearer. When the clothing 19 is worn, the temperature-sensitive body 5, especially the auxiliary sheet 13, is arranged at a position corresponding to the lower abdomen of the wearer. In other words, it is the distance between the excretory opening contact area (not shown) of the absorber 11 constituting the absorption body 3 and the auxiliary sheet 13 of the temperature-sensing body 5, and the distance between the excretory opening and the lower abdomen of the wearer ( The distance on the skin surface) is approximately equal.

The absorption body 3 has the same shape as a normal sanitary napkin. The auxiliary sheet 13 is made of non-woven fabric, and the entirety of the auxiliary sheet 13 is coated with a temperature-sensitive solution (not shown), and the entirety of the auxiliary sheet 13 constitutes a temperature-sensitive region 31 . In addition, a part of the temperature-sensitive solution also migrates to the region on the auxiliary sheet 13 side of the liquid-permeable sheet 7 , and the region on the auxiliary sheet 13 side of the liquid-permeable sheet 7 constitutes the temperature-sensitive region 31 . Moreover, the length of the width direction W of the auxiliary sheet 13 is longer than the length of the width direction W of the absorber 11 , and the temperature sensitive area 31 is arranged in a wider area in the width direction W than the absorber 11 .

The warmth-sensing solution contains a warming-sensing agent for activating TRP ion channels, a cooling-sensing agent for activating TRP ion channels, and a vehicle. The sanitary napkin 1 is fixed to the clothing 19, and the temperature-sensing solution permeable sheet 7 contained in the temperature-sensing region 31 (auxiliary sheet 13) contacts the wearer's skin during use, thereby causing the wearer's skin to wear. The TRP ion channel of the portion in contact with the warming agent which is in contact with the warming agent can be efficiently activated, and a warm feeling can be efficiently imparted to the lower abdomen of the wearer.

As a result of activating the TRP ion channel in the portion of the skin of the wearer's lower abdomen that is in contact with the warming agent by imparting a feeling of warmth to the lower abdomen of the wearer, heat can be expected via the sympathetic nervous system. It is generated from the portion in contact with the warming agent, and the temperature of the portion in contact with the warming agent of the wearer's skin is raised, thereby warming the portion close to the wearer's uterus, and relieving the wearer's physiological pain. In addition, by warming the vicinity of the wearer's uterus, it can be expected to alleviate the wearer's premenstrual syndrome (Premenstrual Syndrome), fear of cold, menopausal disorders, and the like.

The inventors of the present invention have found that the time until a desired temperature is felt (warm feeling time) tends to be longer for a heat-sensing article containing a heat-sensing agent than for a heat-generating article containing a heat-generating agent (for example, iron powder), and in During this warm feeling time, the wearer is likely to feel itching. Since the sanitary napkin 1 contains both a warming agent that activates TRP ion channels and a cooling agent that activates TRP ion channels, the cooling agent imparts a cooling sensation to the wearer during the above-mentioned warm feeling time. , Therefore, the user is not easy to feel itching.

In addition, the first folding axis F ₃ in the width direction, the first folding axis F ₁ in the longitudinal direction, and the second folding axis F ₂ in the longitudinal direction are in the unfolded state of the sanitary napkin 1 and the packaging sheet 29 because they are related to the temperature sensitive area. 31 (auxiliary sheet 13) is repeatedly arranged in the thickness direction T, so that the wearer's pelvic lymph nodes (internal iliac lymph nodes, obturator lymph nodes, external iliac lymph nodes, anterior sacral lymph nodes, common iliac lymph nodes, parametrium lymph nodes, The sacral lymph nodes, supra-inguinal lymph nodes, para-aortic lymph nodes, etc.), groin lymph nodes (superficial inguinal lymph nodes, deep inguinal lymph nodes, etc.) and the like further impart warmth.

Fig. 4 is a diagram for explaining the underpants-type sanitary napkin 101 which is another embodiment (hereinafter referred to as "second embodiment") according to the present invention (invention A), and shows the wearing state 's diagram. In addition, in the following, "underpants-type sanitary napkin according to the second embodiment as a heat-sensing article" may be simply referred to as "underpants-type sanitary napkin according to the second embodiment".

The underpants-type sanitary napkin 101 according to the second embodiment includes an underpants portion 103 and an absorbent article portion 105 arranged on the inner surface of the underpants portion 103 . The absorbent article portion 105 includes, in the absorbent body 107, a liquid-permeable sheet (not shown) that is in contact with the wearer's skin during wearing, and a liquid-impermeable sheet (not shown) that is in contact with the underpants 103. ), and the absorber 111 disposed therebetween. In addition, the absorbent article portion 105 includes, in the temperature-sensitive body 109, a liquid-permeable sheet (not shown) that comes into contact with the wearer's skin during wearing, and a liquid-impermeable sheet (not shown) that comes into contact with the underwear portion 103. (not shown), and the auxiliary sheet 113 and the shape maintaining member 115 arranged therebetween.

In addition, the liquid-permeable sheet (not shown) in the absorption body 107 and the liquid-permeable sheet (not shown) in the temperature-sensitive body 109 are constituted by an integral sheet formed of nonwoven fabric. In addition, the liquid-impermeable sheet (not shown) in the absorption body 107 and the liquid-impermeable sheet (not shown) in the temperature-sensitive body 109 are also constituted by an integral sheet.

The auxiliary sheet 113 of the temperature-sensitive body 109 is made of non-woven fabric like the auxiliary sheet 13 in the first embodiment. The auxiliary sheet 113 is coated with a temperature-sensing solution (not shown) containing: a warming agent for activating the TRP ion channel, a cooling agent for activating the TRP ion channel, and a solvent (not shown), and the overall structure of the auxiliary sheet 113 Temperature sensitive area 117 . In addition, a part of the temperature sensitive solution also migrates to the area on the auxiliary sheet 113 side of the liquid permeable sheet (not shown), and the area on the auxiliary sheet 113 side of the liquid permeable sheet (not shown) also constitutes the temperature sensitive area 117 .

When the underwear-type sanitary napkin 101 is used, the permeable liquid permeable sheet (not shown) of the temperature-sensing solution contained in the temperature-sensing region 117 (auxiliary sheet 113 ) contacts the wearer's skin, so that the wearer's skin is The TRP ion channel of the portion in contact with the warming agent is efficiently activated, and a feeling of warmth can be efficiently imparted to the lower abdomen of the wearer.

As a result of activating the TRP ion channel in the portion of the skin of the wearer's lower abdomen that is in contact with the warming agent by imparting a feeling of warmth to the lower abdomen of the wearer, heat can be expected via the sympathetic nervous system. It is generated from the portion in contact with the warming agent, and the temperature of the portion in contact with the warming agent of the wearer's skin is raised, thereby warming the portion close to the wearer's uterus, and relieving the wearer's physiological pain. In addition, it can be expected to reduce premenstrual syndrome (Premenstrual Syndrome), fear of cold, menopausal disorders and the like of wearers.

FIG. 5 is a diagram illustrating a disposable diaper 201 for adults as a temperature-sensitive article according to yet another embodiment (hereinafter referred to as “third embodiment”) according to the present invention (invention A), and shows Diagram of the installed state. In addition, hereinafter, "the disposable diaper according to the third embodiment as a temperature-sensitive article" may be referred to as "the disposable diaper according to the third embodiment".

The disposable diaper 201 according to the third embodiment includes a liquid-permeable sheet 203 that is in contact with the wearer's skin, a liquid-impermeable sheet 205, a liquid-permeable sheet 203 disposed on the liquid-impermeable sheet 203, and a liquid-impermeable sheet 205. The absorber 207 between the sheets 205 , and the auxiliary sheet 209 which is located in front of the absorber 207 and between the liquid-permeable sheet 203 and the liquid-impermeable sheet 205 are arranged.

The auxiliary sheet 209 is arranged so as to correspond to the lower abdomen of the wearer when the disposable diaper 201 is worn. The auxiliary sheet 209 is made of non-woven fabric, and the entirety of the auxiliary sheet 209 is coated with a temperature-sensitive solution (not shown), and the entirety of the auxiliary sheet 209 constitutes a temperature-sensitive area 211 . In addition, a part of the temperature sensitive solution also migrates to the region on the auxiliary sheet 209 side of the liquid permeable sheet 203 , and the region on the auxiliary sheet 209 side of the liquid permeable sheet 203 also constitutes the temperature sensitive region 211 .

The warmth-sensing solution contains a warming-sensing agent for activating TRP ion channels, a cooling-sensing agent for activating TRP ion channels, and a vehicle. When the wearer wears the disposable diaper 201, the warm solution permeable sheet 203 contained in the warm solution contained in the auxiliary sheet 209 comes into contact with the wearer's skin, thereby causing the wearer's skin to penetrate. The TRP ion channel of the warming agent-contacting portion in contact with the warming agent is efficiently activated, and a warm sensation can be efficiently imparted to the lower abdomen of the wearer.

By imparting a feeling of warmth to the lower abdomen of the wearer, as a result of activating the TRP ion channel in the portion of the skin of the lower abdomen of the wearer that contacts the warming agent, the TRP ion channel is activated through the sympathetic nervous system. It is generated from the portion in contact with the warming agent, and it can be expected to raise the temperature of the portion in contact with the warming agent on the skin of the wearer.

As a result, when the wearer of the disposable diaper 201 is a woman, it can be expected that (i) the prostaglandin, which is a factor of menstrual pain, is excreted, the muscles such as the uterine muscle are relaxed, and the menstrual pain is relieved, and (ii) Promote blood circulation, promote lymph flow, discharge old waste, improve coldness, burn fat, (iii) improve immunity, etc. When the wearer of the disposable diaper 201 is a male, it can be expected to (i) excrete prostaglandins, relax muscles, relieve pain, (ii) promote blood circulation, promote the flow of lymph, and discharge old waste, Improve coldness, let fat burn, (iii) improve immunity, etc.

6 to 9 are diagrams for explaining a temperature-sensitive sheet 301 as a temperature-sensitive article according to yet another embodiment (hereinafter referred to as "fourth embodiment") according to the present invention (invention A). In addition, in the following, only "the temperature-sensitive sheet according to the fourth embodiment as a temperature-sensitive article" may be referred to as "the temperature-sensitive sheet according to the fourth embodiment". Specifically, FIG. 6 is a perspective view of an individual package 303 of a temperature-sensitive sheet in which the temperature-sensitive sheet 301 is individually packaged according to the fourth embodiment. FIG. 7 is a perspective view of a temperature-sensitive sheet 301 according to the fourth embodiment. FIG. 8 is an exploded perspective view of the temperature-sensitive sheet 301 according to the fourth embodiment. FIG. 9 is a view showing a mounted state of the temperature-sensitive sheet 301 according to the fourth embodiment. In addition, the "individual package of temperature-sensitive sheet" may be simply referred to as "individual package" below.

According to the temperature-sensitive sheet 301 of the fourth embodiment, the liquid-permeable sheet 307 abutting on the wearer's skin, the auxiliary sheet 309, the liquid-impermeable sheet 311 abutting on the clothes, and the liquid-impermeable sheet 311 are fixed in The impermeable sheet 311 is provided in the order of adhering the liquid-impermeable sheet 311 to the adhesive portion 313 for the clothing 321 and the release sheet 315 for temporarily fixing the adhesive portion 313, and has longitudinal directions L orthogonal to each other. , the width direction W and the thickness direction T. Moreover, the liquid-permeable sheet 307 has a skin contact surface 331 and a non-skin contact surface 333 . The auxiliary sheet 309 is composed of a non-woven fabric, and is coated on the whole with a warm-sensing solution (not shown) containing a warming-sensing agent for activating TRP ion channels, a cooling-sensing agent for activating TRP ion channels, and water as a hydrophilic solvent. ), the whole of the auxiliary sheet 309 constitutes the temperature sensitive area 341 . In addition, a part of the temperature sensitive solution also migrates to the area on the auxiliary sheet 309 side of the liquid permeable sheet 307 , and the area on the auxiliary sheet 309 side of the liquid permeable sheet 307 also constitutes the temperature sensitive area 341 .

The temperature-sensitive sheet 301 has a folding axis F ₆ extending parallel to the width direction W at the center of the longitudinal direction L. As shown in FIG. In addition, the individual package 303 is packaged as the packaging sheet 305 by folding the temperature _- sensitive sheet 301 with the folding axis F6 as the base axis and the skin contact surface 331 of the liquid-permeable sheet 307 as the inner side.

The adhesive portion 313 is composed of a plurality of adhesive portion portions 314 . Each of the plurality of adhesive portions 314 extends toward the widthwise direction W, and reaches both ends of the widthwise direction W of the temperature sensitive sheet 301 . The plurality of adhesive portions 314 are arranged at predetermined intervals in the longitudinal direction L. As shown in FIG. The release sheet 315 has the same shape as the outer edge of the liquid-impermeable sheet 311, and is arranged so as to cover the entirety of the adhesive portion 313 (a plurality of adhesive portion portions 314).

As shown in FIG. 6 , the temperature-sensitive sheet 301 is wrapped by the wrapping sheet 305 in a state folded in half to form an individual wrapping body 303 . Specifically, in the individual package 303, the temperature-sensitive sheet 301 which is folded inward with the skin contact surface 331 of the liquid-permeable sheet ₇ with the folding axis F6 as the base axis is sandwiched between two packaging sheets 305, It is formed by providing the sealing part 335 on the peripheral edge of the packaging sheet 305 of two sheets.

When the user uses the temperature-sensitive sheet 301 , the individual package 303 is unsealed from the notch 337 of the individual package 303 , the temperature-sensitive sheet 301 is taken out from the individual package 303 , and the release sheet 315 is peeled off from the temperature-sensitive sheet 301 . In this way, the wearer fixes the adhesive portion 313 of the thermal sheet 301 to the clothing 321, specifically, the inner surface of the underpants, and the skin contact surface 331 of the thermal sheet 301 is in contact with the wearer's skin. The temperature sensitive sheet 301 is used.

The warmth-sensing article of the present invention (Invention A) includes a temperature-sensing solution containing a warming-sensing agent for activating TRP ion channels, a cooling-sensing agent for activating TRP ion channels, and a vehicle. The above-mentioned thermosensitive agent is not particularly limited as long as it activates the TRP ion channel. For example, an agent that acts on the TRPV1 receptor, an agent that acts on the TRPV3 receptor, etc., is preferably an agent that acts on TRPV1. . The TRPV1 receptor has a high activation temperature when the critical value exceeds 43°C, and can give the wearer a high temperature sensation.

The above-mentioned warming agent is preferably a compound derived from a plant from the viewpoint of the user's sense of security. For the above-mentioned warming agent, for example, capsaicin, capsaicin, capsaicins (dihydrocapsaicin, original dihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, noniquat, etc.); Capsanthin; Benzyl Nicotinate; Nicotinic Acid-β-Butoxyethyl Ester; N-Acetyl Glycerophosphate; Vanillyl Amide Nonanoate; Polyol; Capsicum Powder; Capsicum Tincture; Capsicum Extract compounds; vanillyl ether of nonanoic acid; vanillyl alcohol alkyl ether derivatives (eg: vanillyl butyl ether, vanillyl alcohol ethyl ether, vanillyl amyl ether, vanillyl hexyl ether); isovanillyl alcohol alkyl ether; ethyl ether vanillyl alcohol alkyl ether; veratrol derivatives; substituted benzyl alcohol derivatives; substituted benzyl alcohol alkyl ethers; vanillyl extract propylene glycol acetaldehyde; ethyl vanillin propylene glycol acetaldehyde; ginger extract Ginger oil; gingerol; gingerol; hesperidin; and pyrrolidone carboxylic acid; and any combination of these.

The above-mentioned warming agent is not ideal from the viewpoint of the user not easily feeling pain and itching, but not capsaicin, and vanillyl alcohol alkyl ether derivatives, such as vanillyl alcohol ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, etc. are ideal. Ginger extract, vanillyl hexyl ether ginger extract, ginger oil, gingerol, and gingerone, and any combination of these are most desirable.

The cooling agent is not particularly limited as long as it activates the TRP ion channel, and examples thereof include an agent that acts on the TRPM8 receptor, an agent that acts on the TRPA1 receptor, and the like, and an agent that acts on TRPM8 is preferable. In order not to cause excessive cooling to the user.

Examples of the aforementioned cooling agents include: menthol (for example: l-menthol) and derivatives thereof (for example: menthyl lactate, menthyl glyceryl ether, for example: l-menthyl glyceryl ether); water Methyl cylate; camphor; essential oils derived from plants (eg: peppermint, eucalyptus), etc.

The above-mentioned solvent is not particularly limited as long as it can contain the above-mentioned warming agent and cooling agent, and examples thereof include a lipophilic solvent and a hydrophilic solvent. The above-mentioned solvent can dissolve and disperse the above-mentioned warming agent and cooling agent, for example. Examples of the above-mentioned lipophilic solvent include fats and oils, for example, natural oils (eg, fatty acid esters such as triglycerides, coconut oil, linseed oil, etc.); hydrocarbons (eg, paraffin, eg, mobile paraffin) Wait. Examples of the above-mentioned hydrophilic solvent include water and alcohols. Examples of the above-mentioned alcohols include lower alcohols such as methanol, ethanol, ethylene glycol, and glycerol, and higher alcohols such as octanol, lauryl alcohol, and myristyl alcohol.

The above-mentioned solvent is preferably fats and oils (lipophilic solvent) or alcohols (hydrophilic solvent) from the viewpoint of easy control of volatility, especially easy avoidance of volatility. Moreover, when the said temperature-sensitive article is an absorbent article, it is preferable that the said solvent is a lipophilic solvent from a viewpoint of inhibiting absorbency.

The aforementioned warming solution preferably contains 0.0001 to 5.0 mass % of the aforementioned warming agent, more desirably 0.0005 to 3.0 mass % of the aforementioned warming agent, and still more desirably 0.1 to 1.0 mass % of the aforementioned warming agent, And it is most desirable to contain 0.3-0.7 mass % of the said warming agent. From the viewpoint of the thermal effect. The above-mentioned warming solution preferably contains 0.0001 to 5.0 mass % of the above-mentioned cooling agent, more preferably 0.0005 to 3.0 mass % of the above-mentioned cooling agent, and more preferably 0.1 to 1.0 mass % of the above-mentioned cooling agent, and most ideally It is the said cooling agent containing 0.3-0.7 mass %. It is from the viewpoint that the wearer is less likely to feel itching during the warm feeling time, and is less likely to feel an excessive cooling sensation.

The above-mentioned warm-sensing solution ideally contains the above-mentioned warming-sensing agent and the cooling-sensing agent in a mass ratio of 20:1 to 1:10, and more preferably contains the above-mentioned warming-sensing agent and cooling-sensing agent in a mass ratio of 10:1 to 1:5, and furthermore Ideally, the above-mentioned warming agent and cooling agent are contained in a mass ratio of 2:1 to 1:1. It is from the viewpoint that the wearer is less likely to feel itching during the warm feeling time, and is less likely to feel a cool feeling, and is more likely to feel a warm feeling.

In the warm-sensing article of the present invention (Invention A), the basis weight of the warm-sensing agent is ideally a warm-sensing solution containing a basis weight of 0.001-10 g/m ² , more preferably a warm-sensing solution containing a basis weight of 0.003-5 g/m ² . The sensory solution is more preferably a temperature sensory solution containing a basis weight of 0.01 to 2.5 g/m ² , and more preferably a temperature sensory solution containing a basis weight of 0.05 to 1.5 g/m ² . From the point of view of giving warmth to the wearer.

In the warm feeling article of the present invention (Invention A), the warm feeling solution may contain at least one of the following types in addition to the above-mentioned warming agent, cooling agent and solvent, within a range that does not hinder the effect of imparting a warm feeling to the wearer other ingredients of the species. As for the above-mentioned at least one other component, for example, as a coolant, a coolant whose ambient temperature is lowered by the heat of vaporization is mentioned, and as for the coolant, for example, alcohols, for example, methanol, ethanol, etc. are mentioned. .

As for the other component of the said at least 1 type, a silicone oil, a silicon dioxide, a silicone resin etc. are mentioned, for example. Examples of the other components of at least one of the above include antioxidants, for example, BHT (2,6-di-butyltriyl-p-cresol), BHA (butylated hydroxyanisole), Propyl Ester, etc.

As for the other component of the said at least 1 type, a vitamin is mentioned, for example, a natural vitamin or a synthetic vitamin is mentioned, for example. Examples of the above-mentioned vitamins include water-soluble vitamins, for example, vitamin B group, for example: vitamin B ₁ , vitamin B ₂ , vitamin B ₃ , vitamin B ₅ , vitamin B ₆ , vitamin B ₇ , vitamin B ₉ , vitamin _B12 , etc., vitamin C. Examples of the above-mentioned vitamins include fat-soluble vitamins, for example, vitamin A group, vitamin D group, vitamin E group, and vitamin K group. The above-mentioned vitamins also contain such derivatives.

Examples of the other components of at least one of the above include amino acids; for example, alanine, arginine, lysine, histidine, proline, hydroxyproline, etc., and peptides.

Examples of the other components of at least one of the above include zeolite; for example, natural zeolite; Examples of other components of at least one of the above include cholesterol, hyaluronic acid, lecithin, ceramide, placenta, collagen, elastin, squalane, petrolatum, trehalose, and the like.

In addition, as for the above-mentioned at least one other component, for example, a pharmaceutical agent can be mentioned, for example, a skin astringent, an anti-acne agent, an anti-wrinkle agent, a cellulite removing agent, a whitening agent, an antibacterial agent, an antifungal agent, etc. . Examples of the aforementioned skin astringents include zinc oxide, aluminum sulfate, tannic acid, and the like, and examples of oil-soluble skin astringents include oil-soluble polyphenols. As said oil-soluble polyphenols, natural oil-soluble polyphenols include, for example, Phellodendron chinensis extract, Forsythia suspensa extract, wild sesame extract, Glycitragali extract, burdock extract, Salvia miltiorrhiza extract, Japanese ginseng extract, Tilia Extract, Tilia Extract, Birch Leaf Extract, Equisetum Leaf Extract, Sage Extract, Walnut Shell Extract, Hibiscus Flower Extract, Loquat Leaf Extract, Tilia Flower Extract, Hop Flower Extract , Horse chestnut seed extract, Coix seed extract, etc.

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

As the above-mentioned orange peel fat reducing agent, for example, a xanthine compound is mentioned, and for example, aminophenanthine, caffeine, theophylline, theobromine, etc. are mentioned. Examples of the above-mentioned whitening agents include nicotinamide, koji acid, arbutin, glucosamine and derivatives, phytosterol derivatives, ascorbic acid and derivatives thereof, mulberry bark extract and placenta extract.

Moreover, as for the said at least 1 sort(s) of other components, an anti-inflammatory component, a pH adjuster, an antibacterial agent, a moisturizing agent, a fragrance|flavor, a pigment, a dye, a pigment, a plant extract etc. are mentioned, for example. For the above-mentioned anti-inflammatory ingredients, for example, natural anti-inflammatory agents, and for example, peony, skullcap, Hypericum perforatum, chamomile, licorice, peach leaves, wormwood, perilla leaf extracts, etc., synthetic anti-inflammatory agents; for example Examples include allantoin, dipotassium glycyrrhizinate, and the like. Examples of the above-mentioned pH adjusters include malic acid, succinic acid, citric acid, tartaric acid, lactic acid, and the like for those who keep the skin in a weakly acidic state. Examples of the above-mentioned pigments include titanium oxide.

It is preferable that the temperature-sensing article of the present invention (Invention A) especially the temperature-sensing solution does not contain a heat generating agent. According to this, the wearer is less likely to suffer from low-temperature burns. In addition, since the temperature-sensitive article itself does not generate heat, the adhesive portion for fixing the temperature-sensitive article to the clothing and contacting the skin is not easily softened, and after the use of the temperature-sensitive article is completed, it is removed from the clothing and the wearer's skin. In the case of a temperature-sensitive article, the adhesive portion of the temperature-sensitive article is less likely to remain on clothing, skin, and the like.

As far as the above-mentioned exothermic agents are concerned, as long as the exothermic agents themselves generate heat, there are no special restrictions. For example, chemical energy such as the heat of oxidation of metal powder (such as iron powder), the heat of neutralization of acid and alkali, and the heat of hydration of inorganic salts can be used. By.

In the temperature-sensitive article of the present invention (Invention A), the liquid-permeable sheet is not particularly limited as long as it has liquid-permeability. The above-mentioned fabrics are preferably non-woven fabrics from the viewpoint of the easiness of the manufacturing method of a temperature-sensitive article. For the above-mentioned non-woven fabrics, for example, air-forming pulp, hot air non-woven fabrics, spun-bonded non-woven fabrics, point-bonded non-woven fabrics, water needle non-woven fabrics, needle punched non-woven fabrics, melt-blown non-woven fabrics, and combinations thereof (for example, SMS, etc.) Wait.

Examples of fibers constituting the above-mentioned fabric include natural fibers, synthetic fibers, and semi-synthetic fibers. As the above-mentioned natural fibers, pulp fibers and regenerated cellulose fibers can be mentioned. For the above-mentioned regenerated cellulose fibers, rayon fibers, for example, include: mucus rayon obtained from mucilage fibers; cuproammonium rayon fibers obtained from multi-component rayon and modal fibers, and the cupric ammonium salt solution of cellulose. (also known as "cupramine rayon"); and lyocell fibers and tencel obtained by an organic solvent spinning method using an organic solvent that is a mixed solution of an organic compound and water, without cellulose derivatives Cotton etc. As the above-mentioned semi-synthetic fibers, examples of semi-synthetic cellulose fibers include acetate fibers, and examples of the fibers include triacetate fibers and dimer acetate fibers.

Examples of the above-mentioned synthetic fibers include heat-fusible fibers, and examples of the fibers include polyolefin-based polymers. Examples of such polymers include polyethylene or polypropylene. Examples of polyester-based polymers include polyolefins. Paraben-based polymers, for example, polyethylene terebenzoate (PET), polybutylene terebenzoate, polypentene terebenzoate; polyamide-based polymers For example, nylon 6 or nylon 6,6; polyacrylic acid-based polymers; polyacrylonitrile-based polymers; or modified compounds of these, or fibers formed by a combination of these can be cited.

The above-mentioned perforated film includes, for example, a polyethylene or polypropylene sheet with a plurality of perforated portions.

When elastic strainability is imparted to the temperature-sensitive article of the present invention (Invention A), the liquid-permeable sheet may have hydrophilicity or lipophilicity. The hydrophilic liquid-permeable sheet is a material constituting a liquid-permeable sheet by treating with a hydrophilizing agent known in the technical field (eg, coating a hydrophilizing agent, mixing a hydrophilizing agent). As said hydrophilizing agent, a phosphoric acid alkyl ester salt, a phosphoric acid alkyl ester metal salt, etc. are mentioned, for example. In addition, for the above-mentioned hydrophilizing agent, for example, a mixture of a phosphate alkyl ester salt having 10 to 30 carbon atoms; A mixture of alkyl phosphate ester salt and polyether modified polysiloxane, etc. By adjusting the polarity (lipophilicity and hydrophilicity) between the liquid-permeable sheet and the auxiliary sheet, the temperature-sensitive article can have elastic strain.

The inventors of the present application found that the warm-sensing time of the heat-sensing article containing the heat-sensing agent tends to be longer than that of the heat-generating article containing the heat-generating agent (for example, iron powder). In addition to itching, the heat-sensing article containing a warming-sensing agent, compared with a heat-generating article containing a heat-generating agent (such as iron powder), may be affected by the state of the wearer's skin (for example, the dryness of the wearer's skin, etc.). Warm feeling is different. For example, when the wearer's skin is moistened with water, compared with when the wearer's skin is dry, the wearer's skin is more likely to maintain a swelled state of the stratum corneum, and the warm solution is more likely to reach the keratinocytes (keratinocytes). ) TRP ion channel, therefore, it is easy to feel warm (the time of warm feeling is short).

Therefore, by imparting elastic strainability to the temperature-sensitive article of the present invention (Invention A), the portion overlapping the temperature-sensitive area of the wearer and the temperature-sensitive article is pushed in the thickness direction of the temperature-sensitive article, thereby releasing the heat-sensitive area from the temperature-sensitive area. The warm feeling solution is released, and the warm feeling solution passing through the liquid permeable sheet reaches the wearer's skin, which can give the wearer a warmer feeling than before pushing in, so that the wearer can adjust the warm feeling.

As for the liquid-permeable sheet having lipophilicity, the liquid-permeable sheet can be formed by treating it with a hydrophilizing agent well-known in the technical field (for example, applying the lipophilicizing agent, mixing the lipophilicizing agent). material. As said lipophilic agent, fatty acid ester (for example, triglyceride), and hydrocarbon (for example, linear hydrocarbon) are mentioned.

When the liquid-permeable sheet of the warm-sensing article of the present invention (Invention A) is a woven fabric, elastic strain is imparted to the warm-sensing article of the present invention, and the liquid-permeable sheet preferably has a fiber density of 0.005 to 0.060 g/cm ³ , more preferably It is desirable to have a fiber density of 0.010 to 0.050 g/cm ³ , and it is more desirable to have a fiber density of 0.020 to 0.040 g/cm ³ . By adjusting the fiber density between the liquid-permeable sheet and the auxiliary sheet, the temperature-sensitive article can have elastic strainability. The measurement method of the said fiber density is mentioned later.

When the liquid-permeable sheet of the warm-sensing article of the present invention (Invention A) is a woven fabric, elastic strain is imparted to the warm-sensing article of the present invention, and the thickness of the fiber when the liquid-permeable sheet is loaded with a load of 30 g/cm ² is 3 g/cm ² . The ideal thickness is 70%, more preferably 60% or less, and most preferably 50% or less. According to this, when the wearer pushes the warm-sensitive article in the thickness direction, the liquid-permeable sheet easily collapses, and the warm-sensitive solution held by the liquid-permeable sheet is likely to come into contact with the wearer's skin, thereby making the warm The elastic strain of the sense object is improved.

When the liquid-permeable sheet of the warm-sensing article of the present invention (Invention A) is a woven fabric, when elastic strain is imparted to the warm-sensing article of the present invention, the thickness of the liquid-permeable sheet under a load of 10 g/cm ² is 3 g/cm ² . The thickness under load is desirably 70% or more, more desirably 80% or more, and most desirably 90% or more. According to this, the liquid-permeable sheet is less likely to collapse under the wearing pressure of the clothing or the like, and the warm-feeling solution held by the liquid-permeable sheet is less likely to contact the wearer's skin due to the wearing pressure, thereby making it easier to make a warm feeling. The elastic strain of the item is increased.

In the present invention (Invention A), the thickness at the load of 30 g/cm ² , 10 g/cm ² and 3 g/cm ² was measured in the following manner. (1) Prepare FS-60DS manufactured by Daiei Scientific Seiki Co., Ltd. in a constant temperature and humidity chamber with temperature: 20±5°C and humidity: 65±5% RH, and place the liquid-permeable sheet in the constant temperature and humidity chamber. (hereinafter referred to as "sample") for 24 hours. (2) Measure the thickness of the sample at 10 points at the replacement position, and use the average value of these as the thickness of the sample. The load is adjusted by changing the gauge head. Under the condition of load: 3g/ ^cm2 , use the gauge head of diameter: 44mm, under the condition of load: 10g/ ^cm2 , use the gauge head of diameter: 25mm, then under the condition of load: 30g/ ^cm2 Next, use a gauge head with a diameter: 14mm.

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

In the temperature-sensitive article of the present invention (Invention A), the liquid-permeable sheet may contain a heat-generating material, a heat-insulating material, a hygroscopic material, and a material ( Hereinafter, there are cases where it is only referred to as "functional material"). If the liquid-permeable sheet contains the above-mentioned predetermined functional materials, the main stratum corneum of the wearer's skin is easily swelled by moisture due to evaporation, sweat, etc. from the wearer, so that the warm solution can easily reach the main layer. TRP ion channel 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 above-mentioned heat-generating materials include (i) moisture-absorbing heat-generating materials (hygroscopic heat-generating fibers, moisture-absorbing heat-generating sheets, etc.); (ii) heat-storage materials (heat-storage fibers, heat-storage sheets, etc.); (iii) Far-infrared radiation materials (far-infrared radiation fibers, far-infrared radiation sheets, etc.).

As the above-mentioned moisture-absorbing and exothermic material, for example, an acrylic material, wool, etc. are mentioned. As the above-mentioned heat storage material, for example, a material containing a substance (such as zirconium carbide) that absorbs sunlight and is converted into thermal energy, a carbon material, and the like can be mentioned. As the above-mentioned far-infrared radiation material, for example, a material containing ceramics that emits far-infrared rays when heated can be mentioned. As said heat insulating material, a hollow fiber, a feather, etc. are mentioned. As the above-mentioned hygroscopic material, the above-mentioned natural fibers, semi-synthetic fibers, and the like can be mentioned.

Specifically, in the temperature-sensitive article of the present invention (Invention A), when the liquid-permeable sheet contains a moisture-absorbing heat-generating material, for example, when a moisture-absorbing heat-generating fiber is contained, if it provides evaporation, sweat, etc. Moisture, the hygroscopic exothermic fibers heat up, and the wearer is prone to sweating. Next, the main stratum corneum of the wearer's skin is swelled by the moisture of the wearer's sweat, so that the temperature-sensing solution can easily reach the TRP ion 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 liquid-permeable sheet contains a heat storage material or a far-infrared radiation material, the wearer tends to sweat, and the main stratum corneum of the wearer's skin is swelled by the moisture of the wearer's sweat. The temperature-sensing solution is made accessible to TRP ion channels 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 the temperature-sensing article of the present invention (Invention A), when the liquid-permeable sheet contains a heat-insulating material, the wearer tends to sweat, and the main stratum corneum of the wearer's skin is affected by the moisture of the wearer's sweat. It swells with moisture, and the temperature-sensing solution can easily reach the TRP ion 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 the temperature-sensing article of the present invention (Invention A), when the liquid-permeable sheet contains a hygroscopic material, the hygroscopic material retains moisture such as evaporation and perspiration of the wearer, thereby allowing the main stratum corneum of the wearer's skin It is easy to swell with water, and the temperature-sensing solution can easily reach the TRP ion 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 the temperature-sensitive article of the present invention (Invention A), the material of the liquid-impermeable sheet is not particularly limited as long as it has liquid-impermeability. Moisture-permeable film, non-moisture-permeable film, and multiple-layer non-woven fabric such as SMS, which is composed of moisture-permeable film and non-woven fabric such as spunbond or water needle, etc. The liquid-impermeable sheet preferably has a basis weight of 10 to 50 g/m ² , and more preferably has a basis weight of 15 to 30 g/m ² .

In the temperature-sensitive article of the present invention (Invention A), the liquid-impermeable sheet is preferably composed of a moisture-impermeable film. Because of this, the liquid-impermeable sheet, such as moisture and water vapor existing in the temperature-sensitive area and the wearer's skin in contact with the temperature-sensitive area, is not easily discharged out of the temperature-sensitive article, and it is easy to maintain the main body of the wearer's skin. The stratum corneum is in a state of swelling with water, so that the temperature-sensing solution can easily reach the TRP ion 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 article of the present invention (Invention A) may include additional members between the liquid-permeable sheet and the liquid-impermeable sheet, that is, for example, an auxiliary sheet, an absorber, and the like. The material of the above-mentioned auxiliary sheet can be exemplified as the material of the liquid-permeable sheet.

The above-mentioned auxiliary sheet contains a temperature-sensitive solution, that is, may constitute a temperature-sensitive area, and does not contain a temperature-sensitive solution, that is, may not constitute a temperature-sensitive area. When the above-mentioned auxiliary sheet constitutes a temperature-sensitive area, when the solvent of the temperature-sensitive solution is a lipophilic solvent, the above-mentioned auxiliary sheet is a fabric formed of synthetic fibers, such as non-woven fabrics, woven fabrics, fabrics, etc., such as synthetic fibers. of non-woven fabrics. In addition, when the auxiliary sheet constitutes a temperature-sensitive region, when the solvent of the temperature-sensing solution is a hydrophilic solvent, the auxiliary sheet is a fabric formed of cellulose fibers, such as non-woven fabric, woven fabric, woven fabric, etc. Tissue, air-formed pulp, etc. formed from pulp fibers.

When the temperature-sensitive article of the present invention (Invention A) has the following structure [(i) an auxiliary sheet is further provided, and (ii) the auxiliary sheet constitutes a temperature-sensitive region], the auxiliary sheet may have hydrophilic properties when the elastic strain property is imparted to the temperature-sensitive article. lipophilic or lipophilic. The auxiliary sheet having hydrophilicity is treated with a hydrophilizing agent known in the technical field (eg, coating the hydrophilizing agent, mixing the hydrophilizing agent) to form a material constituting the auxiliary sheet. As the above-mentioned hydrophilizing agent, the hydrophilizing agent exemplified in the description of the liquid-permeable sheet can be mentioned. By adjusting the polarity (lipophilicity and hydrophilicity) between the liquid-permeable sheet and the auxiliary sheet, the temperature-sensitive article can have elastic strain.

The auxiliary sheet having lipophilicity is a material constituting the auxiliary sheet by being treated with a lipophilic agent known in the technical field (eg, coating the lipophilic agent, mixing the lipophilic agent). As the above-mentioned lipophilic agent, the lipophilic agent exemplified in the description of the liquid-permeable sheet can be mentioned.

When the temperature-sensitive article of the present invention (Invention A) has the following structure [(i) an auxiliary sheet is further provided, and (ii) the auxiliary sheet constitutes a temperature-sensitive region], and when the elastic strain property is imparted to the temperature-sensitive article, the auxiliary sheet preferably has The fiber density is 0.010-0.500 g/cm ³ , more preferably 0.020-0.300 g/cm ³ , and more preferably 0.030-0.100 g/cm ³ . The above-mentioned auxiliary sheet desirably has a basis weight of 10 to 200 g/m ² , and more desirably has a basis weight of 15 to 150 g/m ² .

When the temperature-sensitive article of the present invention (Invention A) has the following structure [(i) an auxiliary sheet is further provided, (ii) the auxiliary sheet constitutes a temperature-sensitive region, and (iii) the liquid-permeable sheet is a fabric], the temperature-sensitive article is imparted In the case of elastic strainability, the liquid-permeable sheet has a fiber density that is less than 0.005 g/cm ³ ideally, more desirably, 0.010 g/cm ³ or more, and more desirably, 0.015 g/cm 3 or more. The fiber density is less than cm ³ , and it is more ideal that the fiber density is less than 0.020 g/cm ³ , the fiber density is less than 0.025 g/cm ³ , and the fiber density is less than 0.030 g/cm 3 more ideally. Small fiber density above cm ³ . According to this, in the state where no force is applied, the temperature-sensitive solution is easily held by the auxiliary sheet with high fiber density, and when the user pushes the temperature-sensitive article, the temperature-sensitive solution moves to the liquid-permeable sheet, and then, It is easy to move to the wearer's skin.

When the temperature-sensitive article of the present invention (Invention A) has the following structure [(i) further comprising an auxiliary sheet, (ii) the auxiliary sheet constitutes a temperature-sensitive region, and (iii) the liquid-permeable sheet is a woven fabric], a warm feeling can be imparted When the elastic strain of the article is concerned, the liquid-permeable sheet should ideally have a fiber density that is less than 0.440 g/cm ³ or less compared to the auxiliary sheet ^; It has a small fiber density of 0.250 g/cm ³ or less; it is more desirable to have a small fiber density of 0.200 g/cm ³ or less; it is still more desirable to have a small fiber density of 0.150 g/cm ³ or less; It is more desirable to have a small fiber density of 0.100 g/cm ³ or less; it is still more desirable to have a small fiber density of 0.060 g/cm ³ or less; it is still more desirable to have a small fiber density of 0.045 g/cm ³ or less ; It is most desirable to have a small fiber density of 0.040 g/cm ³ or less; and it is more desirable to have a small fiber density of 0.035 g/cm ³ or less. According to this, when the wearer pushes the temperature-sensitive article, the warm-sensitive solution moves to the liquid-permeable sheet, and then, it is easy to move to the wearer's skin.

The fiber density of the liquid-permeable sheet and the auxiliary sheet was measured in the following manner. (1) Prepare FS-60DS (measurement surface 44mm (diameter), measuring pressure 3g/cm) in a constant temperature and humidity chamber with temperature: 20±5°C and humidity: 65±5%RH ² ], and at least one sheet (hereinafter referred to as "sample") of the liquid permeable sheet and the auxiliary sheet (hereinafter referred to as "sample") was allowed to stand for 24 hours in the constant temperature and humidity chamber. (2) For the above-mentioned sample, 10 sample pieces with a size of 0.1 m×0.1 m were taken. (3) Measure the mass of each sample piece, and then calculate the basis weight of each sample piece: bw (g/m ² ) by dividing the mass (g) of each sample piece by the area (m ² ) of each sample piece.

(4) Use FS-60DS to pressurize 5 different parts of each sample sheet, measure the thickness of each part after pressing for 10 seconds, and take the average value of 5 measured values as the thickness of each sample sheet: t(m). (5) In each sample sheet, by dividing the basis weight of the sample sheet: bw (g/m ² ) by the thickness of the sample sheet: t (m) to adjust the unit, calculate the fiber density of each sample sheet: fd (g/m2) cm ³ ). (6) Calculate the average value of the fiber density: fd (g/cm ³ ) of a total of 10 sample sheets, and use the average value as the fiber density: FD (g/cm ³ ).

When the temperature-sensitive article of the present invention (Invention A) has the following structure [(i) an auxiliary sheet is further provided, (ii) the auxiliary sheet constitutes a temperature-sensitive region, and (iii) the solvent of the temperature-sensitive solution is a lipophilic solvent], When imparting elastic strainability to a temperature-sensitive article, it is desirable that the lipophilicity of the auxiliary sheet be higher than the lipophilicity of the liquid-permeable sheet.

In this way, the temperature-sensitive solution containing the lipophilic solvent is more likely to exist in the auxiliary sheet constituting the temperature-sensitive area than the liquid-permeable sheet. The warm feeling solution is released, moves to the liquid-permeable sheet, and reaches the wearer's skin through the warm-feeling solution of the liquid-permeable sheet, thereby imparting a warm feeling to the wearer. Furthermore, when the wearer stops pushing the warm-sensitive article, the warm-sensitive solution reaching the wearer's skin slowly returns to the assist sheet ( temperature sensitive area). Therefore, it is easier for the wearer to control the thermal sensation, and the elastic strainability of the above-mentioned thermal article tends to be excellent.

In addition, the temperature-sensitive article of the present invention (Invention A) has the following structure [(i) further comprising an auxiliary sheet, (ii) the auxiliary sheet constitutes a temperature-sensitive region, and (iii) the solvent of the temperature-sensitive solution is a hydrophilic solvent] In this case, it is preferable that the hydrophilicity of the auxiliary sheet be higher than that of the liquid-permeable sheet when the elastic strain property is imparted to the temperature-sensitive article. From the viewpoint of improving the elastic strainability of the temperature-sensitive article.

In this way, the temperature-sensitive solution containing the hydrophilic solvent is more likely to exist in the auxiliary sheet constituting the temperature-sensitive area than the liquid-permeable sheet, and when the user pushes the temperature-sensitive article, the auxiliary sheet (the temperature-sensitive area) is removed from the auxiliary sheet. The warm feeling solution is released, moves to the liquid-permeable sheet, and reaches the wearer's skin through the warm-feeling solution of the liquid-permeable sheet, thereby imparting a warm feeling to the wearer. Furthermore, when the wearer stops pushing the warm-sensitive article, the warm-sensitive solution reaching the wearer's skin slowly returns to the assist sheet due to the difference in hydrophilicity between the assist sheet and the liquid-permeable sheet. (warm area). Therefore, it is easier for the wearer to control the thermal sensation, and the elastic strainability of the above-mentioned thermal article tends to be excellent.

The degree of lipophilicity and the degree of hydrophilicity were evaluated as follows. (1) Prepare the automatic minimum contact angle meter MCA-J of Kyowa Interface Chemical Co., Ltd. in a constant temperature and humidity chamber with temperature: 20±5°C and humidity: 65±5% RH, and in this constant temperature and humidity chamber, the liquid permeability is measured. The flakes and auxiliary flakes (hereinafter "samples") were left to stand for 24 hours. (2) From the inkjet of MCA-J, drop tiny droplets (20pL) of deionized water on the surface of the sample that must be measured (if the sample is a fabric, it is the surface of the fiber, and if the sample is a sheet, it is the surface of the sheet , to record the appearance of tiny droplets at any time. (3) Image analysis is performed on the image after the fine droplets have adhered to the surface of the sample, and the contact angle of the fine droplets on the sample surface is calculated. (4) The contact angle is an average value of measurement values at 20 locations in total using 20 different fibers. (5) A sample with a large contact angle is regarded as a sample with high lipophilicity (sample with low hydrophilicity), and a sample with a small contact angle is regarded as a sample with low lipophilicity (sample with high hydrophilicity).

In the above-mentioned absorber, the core wrap layer covers an absorbent core containing pulp fibers and a polymer absorbent. core etc. As the above-mentioned core cladding layer, the above-mentioned auxiliary sheet can be mentioned. An absorbent article is mentioned as a temperature-sensitive article provided with the said absorber.

The temperature-sensitive article of the present invention (Invention A) may include an adhesive portion for fixing the temperature-sensitive article to clothing, the wearer's skin, or the like, and the adhesive portion may include a hot-melt adhesive, for example, or Pressure-sensitive adhesives or heat-sensitive adhesives mainly composed of olefins such as linear low-density polyethylene; Water-sensitive adhesives and the like made of water-swellable polymers (eg, polyvinyl acetate, sodium polyacrylate, etc.).

The temperature-sensitive article of the present invention (Invention A) is preferably packaged with a packaging sheet before use. From the viewpoint of protecting the temperature-sensitive solution held by the temperature-sensitive article, and from the viewpoint of preventing the temperature-sensitive solution from leaking to the outside. For example, the temperature-sensitive article of the present invention (Invention A) is preferably a package in which one or a plurality of temperature-sensitive articles are packaged with a packaging sheet, and more preferably an individual package in which a single temperature-sensitive article is packaged with a packaging sheet.

The material of the above-mentioned packaging sheet is, for example, a polyolefin-based polymer, and examples thereof include polyethylene and polypropylene. The above-mentioned packaging sheet may include an air-tight layer from the viewpoint of improving the air-tightness of the above-mentioned individual package, and the material of the air-tight layer is, for example, ethylene vinyl alcohol copolymer, vinylidene chloride-based polymer , for example: vinylidene chloride methyl acrylate polymer, polyvinyl alcohol, nylon, for example, Nylon 6, aluminum foil, substrate film (polyethylene terephthalate, etc.) Aluminum, silica, etc.

The temperature-sensitive article of the present invention (Invention A) is not particularly limited as long as it contains a temperature-sensitive solution, and examples thereof include an absorbent article, a temperature-sensitive sheet, and the like. There are no particular limitations on the above-mentioned absorbent articles, and examples of those having absorbents include: sanitary napkins, underwear-type sanitary napkins, sanitary pads, disposable diapers, and incontinence pads. , Interlabial pads, tampons, puerperium pads, breast milk pads, pads for hemorrhoids, sweat-absorbing pads, bedsore sheets (dressing sheets), pet diapers, pet sheets, etc.

The temperature-sensing region of the absorbent article containing the temperature-sensing solution can be arranged in the plane direction of the absorbent article at a position that does not overlap with the absorber in the thickness direction of the absorbent article; overlap with the absorber in the thickness direction of the absorbent article the position; the position of any combination of these, etc. The above-mentioned absorbent article contains the temperature-sensitive region of the temperature-sensitive solution, and can be arranged on the liquid-permeable sheet, the above-mentioned auxiliary sheet, the absorber, any combination of these, etc. in the thickness direction of the absorbent article. The above-mentioned absorbent article generally includes a liquid-permeable sheet, a liquid-impermeable sheet, and an absorber between the liquid-permeable sheet and the liquid-impermeable sheet.

In addition, the temperature-sensitive solution may move on or inside the material constituting the absorbent article, and a temperature-sensitive region may be formed in a part of the material adjacent to the material in which the temperature-sensitive solution is arranged. For example, when the auxiliary sheet is provided with the temperature-sensitive solution, when the liquid-permeable sheet is made of woven fabric, a part of the temperature-sensitive solution moves to, for example, an area on the auxiliary sheet side of the adjacent liquid-permeable sheet, and mainly moves to the absorbent article In the thickness direction of the liquid-permeable sheet, the region on the auxiliary sheet side of the liquid-permeable sheet may form a temperature-sensitive region. Furthermore, when the liquid-permeable sheet is provided with the temperature-sensitive solution, a part of the temperature-sensitive solution, for example, is mainly directed toward the region on the liquid-permeable sheet side of the adjacent auxiliary sheet or the region on the liquid-permeable sheet side of the adjacent absorber. When the thickness direction of the absorbent article moves, the region on the liquid-permeable sheet side of the auxiliary sheet or the region on the liquid-permeable sheet side of the absorber may form a temperature-sensitive region.

The temperature-sensitive article of the present invention (Invention A) has the following structures [(i) the temperature-sensitive article is an absorbent article provided with an absorber, and (ii) the temperature-sensitive solution and the absorber are arranged in the thickness direction of the absorbent article so that the When (iii) the widthwise fold axis extending in the widthwise direction of the absorbent article is folded in the longitudinal direction, and (iii) the widthwise folded axis of the absorbent article is folded in the unfolded state of the temperature-sensitive article and the temperature Ideally, the sensitive area is repeatedly arranged in the thickness direction of the temperature-sensitive article.

If the widthwise folded axis overlaps with the temperature-sensitive area in the thickness direction in the unfolded state of the temperature-sensitive article, the material of the widthwise folded axis overlapped portion of the temperature-sensitive area overlaps with the widthwise folded axis. The material density of the non-repetitive part of the folded axis in the widthwise direction of the density and temperature-sensitive area that does not overlap with the folded axis of the widthwise direction becomes higher, so the amount (basic weight) of the temperature-sensitive solution in the part of the repeated part of the folded axis in the widthwise direction will have There is a tendency that the amount (basis weight) of the temperature-sensing solution in the part where the folding axis does not overlap in the width direction becomes larger.

Therefore, when the temperature-sensing region is arranged at a position corresponding to the wearer's lower abdomen, the overlapping portion of the folded axis in the widthwise direction of the temperature-sensing region can be applied to the wearer's pelvic lymph nodes (internal iliac lymph nodes, obturator lymph nodes, external iliac lymph nodes) Lymph nodes, presacral lymph nodes, common iliac lymph nodes, para-uterine lymph nodes, sacral lymph nodes, supra-inguinal lymph nodes, para-aortic lymph nodes, etc.), inguinal lymph nodes (superficial inguinal lymph nodes, deep inguinal lymph nodes, etc.), etc. , and can be expected to impart a massage effect to these.

The temperature-sensitive article of the present invention (Invention A) has the following structures [(i) the temperature-sensitive article is an absorbent article provided with an absorber, and (ii) the temperature-sensitive solution and the absorber are arranged in the thickness direction of the absorbent article so that the When (iii) the temperature-sensitive article is folded in the widthwise direction along the longitudinal direction folded axis extending in the longitudinal direction of the absorbent article, the longitudinal direction folded axis in the unfolded state of the temperature-sensitive article is different from the temperature. Ideally, the sensitive area is repeatedly arranged in the thickness direction of the temperature-sensitive article.

In the unfolded state of the temperature-sensitive article, the longitudinal folding axis is arranged to overlap with the temperature-sensitive region in the thickness direction, because the overlapping portion of the longitudinal folding axis of the temperature-sensitive region overlaps with the longitudinal folding axis. Material Density and Temperature Sensing Region The material density of the non-repetitive part of the long-side folding axis that does not overlap with the long-side folding axis of the temperature-sensitive area is relatively high, so there is an amount of temperature-sensitive solution in the long-side folding axis overlapping part ( Basis weight) tends to increase the amount (basic weight) of the temperature-sensitive solution in the portion where the folding axis does not overlap in the longer side direction.

Therefore, when the temperature-sensing region is arranged at a position corresponding to the wearer's lower abdomen, the overlapping portion of the longitudinal folded axis of the temperature-sensing region can be applied to the wearer's pelvic lymph nodes (internal iliac lymph nodes, obturator lymph nodes, external iliac lymph nodes) Lymph nodes, presacral lymph nodes, common iliac lymph nodes, para-uterine lymph nodes, sacral lymph nodes, supra-inguinal lymph nodes, para-aortic lymph nodes, etc.), inguinal lymph nodes (superficial inguinal lymph nodes, deep inguinal lymph nodes, etc.), etc. , and can be expected to impart a massage effect to these.

The above-mentioned temperature-sensitive sheet includes, for example, a clothing-fixing type of temperature-sensitive sheet (for example, a liquid-impermeable sheet having an adhesive portion for fixing to the wearer's clothing on the clothing-contacting surface of the liquid-impermeable sheet, and attaching the above-mentioned temperature-sensitive sheet to the wearer's clothing). The adhesive portion is attached to the inner surface of the clothing for the user), and a skin-fixing thermal sheet (for example, on the skin contact surface of the liquid-permeable sheet (for example, the peripheral edge of the thermal sheet) is provided to be fixed on the wearer's skin The adhesive part used is to stick the above-mentioned adhesive part to the skin of the wearer and use it).

The clothing to which the clothing-fixing thermal sheet is fixed is not particularly limited, but for example, there may be a portion that directly contacts the skin of the wearer, and it is ideally suited to the wearer. Examples of the above-mentioned clothing include: intimate clothing (eg, underwear, underwear, bras, etc.); outerwear (eg, tops, lower clothing); socks; gloves; scarves; masks; goggles and the like.

There is no particular limitation on the part where the above-mentioned warm sheet can impart warmth, for example, the head (for example, the face, for example, the eyes); the neck, the upper limbs (for example, the chest, abdomen, groin, back, waist, upper arm, forearm, hand); lower limbs (eg: thigh, calf, foot), etc. In the above-mentioned temperature-sensitive sheet, the temperature-sensitive solution can hold the liquid-permeable sheet, the above-mentioned auxiliary sheet, and the like.

In the above-mentioned temperature-sensitive sheet, the temperature-sensitive region containing the temperature-sensitive solution can be arranged on the entire surface, the central portion, the peripheral portion, or any combination thereof in the plane direction of the temperature-sensitive sheet. In the temperature-sensitive sheet, the temperature-sensitive region containing the temperature-sensitive solution can be arranged in the thickness direction of the temperature-sensitive sheet with a liquid-permeable sheet, the above-mentioned auxiliary sheet, any combination of these, and the like. The above-mentioned temperature-sensitive sheet includes at least a liquid-impermeable sheet and a liquid-permeable sheet in general.

In addition, the temperature-sensitive solution may move on or inside the material constituting the temperature-sensitive sheet, and a temperature-sensitive region may be formed in a part of the material adjacent to the material in which the temperature-sensitive solution is arranged. For example, when the auxiliary sheet is provided with the temperature-sensitive solution, when the liquid-permeable sheet is made of woven fabric, a part of the temperature-sensitive solution moves to, for example, an area on the auxiliary sheet side of the adjacent liquid-permeable sheet, and mainly moves to the temperature-sensitive sheet In the thickness direction of the liquid-permeable sheet, the region on the auxiliary sheet side of the liquid-permeable sheet may form a temperature-sensitive region. In addition, when the temperature-sensitive solution is placed on the liquid-permeable sheet, a part of the temperature-sensitive solution moves mainly in the thickness direction of the temperature-sensitive sheet in the region of the adjacent auxiliary sheet on the liquid-permeable sheet side, for example, and the liquid permeability of the auxiliary sheet is thin. The area on the sheet side may form a temperature sensitive area.

<Invention B> Hereinafter, the temperature-sensitive article of the present invention (Invention B) will be described in detail. FIGS. 10 to 14 are diagrams for explaining one embodiment (hereinafter referred to as “first embodiment”) according to the present invention (invention B) for sanitary napkin 401 as a temperature-sensitive article. In addition, in the following, only "the sanitary napkin according to the first embodiment as a warmth-sensing article" may be simply referred to as "the sanitary napkin according to the first embodiment". Specifically, FIG. 10 is a perspective view of the sanitary napkin 401 according to the first embodiment. FIG. 11 is an exploded perspective view of the sanitary napkin 401 according to the first embodiment. FIG. 12 is a plan view of the auxiliary sheet 413 . FIG. 13 is a cross-sectional view of the auxiliary sheet 413 in the XIII-XIII cross section of FIG. 12 . FIG. 14 is a diagram showing a state in which the sanitary napkin 401 is attached.

The sanitary napkin 401 according to the first embodiment has a longitudinal direction L, a widthwise direction W, and a thickness direction T that are orthogonal to each other, and includes an absorbent body 403 that is arranged in front of the longitudinal direction L relative to the absorbent body 403 The temperature sensor body 405. The sanitary napkin 401 includes, in the absorbent body 403, a liquid-permeable sheet 407 that is in contact with the wearer's skin during wearing, a liquid-impermeable sheet 409 that is in contact with the clothing 19 during wearing, and a liquid-impermeable sheet 409 arranged on the The absorber 411 between the liquid-permeable sheet 407 and the liquid-impermeable sheet 409 . In addition, the sanitary napkin 401 includes, in the temperature-sensitive body 405, a liquid-permeable sheet 407 that comes into contact with the wearer's skin during wearing, a liquid-impermeable sheet 409 that comes into contact with the clothing 19 during wearing, and The auxiliary sheet 413 and the shape maintaining member 415 are arranged between the liquid-permeable sheet 407 and the liquid-impermeable sheet 409 . The shape maintaining member 415 is arranged on the liquid-impermeable sheet 409 side rather than the auxiliary sheet 413 .

In addition, the liquid-permeable sheet 407 of the absorbent body 403 and the liquid-permeable sheet 407 of the temperature-sensitive body 405 are constituted by sheets integrally formed of non-woven fabrics. In addition, the liquid-impermeable sheet 409 of the absorption body 403 and the liquid-impermeable sheet 409 of the temperature-sensitive body 405 are also constituted by an integral sheet. In addition, a part of the absorber 411 of the absorber body 403 and the shape maintaining member 415 of the temperature sensing body 405 are partially overlapped in the thickness direction T in the overlapping part 417, and the absorber 411 is arranged in the overlapping part 417 to maintain the shape. The member 415 is closer to the position of the liquid-permeable sheet 407 .

The sanitary napkin 401 is provided with an adhesive portion 421 for fixing the sanitary napkin 401 to the wearer's clothing 419 on both the absorption body 403 and the warmth-sensing body 405 . One surface of the adhesive portion 421 is fixed to the liquid-impermeable sheet 409 , and the other surface is temporarily fixed to the inner surface of the releasable packaging sheet 29 .

When the sanitary napkin 401 is not in use, it has a first folding axis F ₁ in the longitudinal direction and a second folding axis F ₂ in the longitudinal direction extending in the longitudinal direction L together with the packaging sheet 429, and a longitudinal direction W extending in the direction W. The first folding axis F3 in the widthwise direction, the second folding axis _F4 in the widthwise direction, and the _third folding axis _F5 in the widthwise direction are folded as base axes to form an individual package (not shown) of the sanitary napkin 401. . Moreover, the width direction 1st folding axis F3, the width direction 2nd folding axis _F4 , and the width direction _3rd folding axis _F5 are arrange|positioned at the front, center, and rear of the sanitary napkin 401, respectively.

In addition, the first folding axis F3 in the width direction is arranged in the unfolded state _of the sanitary napkin 401 and the wrapping sheet 429 so as to be connected to the auxiliary sheet 413 (the temperature-sensitive region 431 to be described later), specifically, to the temperature-sensitive application portion. 433 is repeated in the thickness direction T. The _first folding axis F1 in the longitudinal direction and the _second folding axis F2 in the longitudinal direction are arranged and assisted in the unfolded state of the sanitary napkin 401 and the packaging sheet 429, although they do not overlap with the absorber 411 in the thickness direction T. The sheet 413 (the temperature-sensitive region 431 to be described later) overlaps with the temperature-sensing application portion 433 in the thickness direction T specifically. In addition, the intersections of the first folding axis F ₃ in the width direction and each of the folding axes of the first folding axis F ₁ in the longitudinal direction and the second folding axis F ₂ in the longitudinal direction are arranged so as to be in the thickness direction of the temperature-sensing applying portion 433 . T repeats.

The individual packaging body of the sanitary napkin 401 is made by folding the sanitary napkin 401 inward in the width direction W with the _first folding axis F1 in the longitudinal direction and the _second folding axis F2 in the longitudinal direction as the base axes. The sanitary napkin 401 and the packaging sheet 429 are then folded inward in the longitudinal direction L using the first folding axis F3 in the widthwise direction and the _third folding axis _F5 in the widthwise direction as the base axes, and then, The sanitary napkin 401 is formed by folding the sanitary napkin 401 inward in the longitudinal direction L using the second folding axis _F4 in the widthwise direction as a base axis.

The sanitary napkin 401 includes a pair of wing portions 423 for fixing the sanitary napkin 401 to the clothing 419, a sealing portion 425, an embossed portion 427, and the like, but since it is well known in the technical field, the description is omitted. .

In the sanitary napkin 401, the absorption body 403 and the temperature-sensing body 405 are arranged so that the excretory opening contact area (not shown) of the absorber 411 of the absorption body 403 comes into contact with the excretion opening contact area of the wearer. When the clothing 419 is worn, the temperature sensing body 405, especially the auxiliary sheet 413, is arranged at a position corresponding to the lower abdomen of the wearer. In other words, it is the distance between the excretory opening contact area (not shown) of the absorber 411 constituting the absorption body 403 and the auxiliary sheet 413 of the temperature-sensitive body 405, and is the distance between the excretory opening and the lower abdomen of the wearer ( The distance on the skin surface) is approximately equal.

The absorbent body 403 has the same shape as a normal sanitary napkin. The auxiliary sheet 413 is composed of a non-woven fabric having a uniform basis weight, and a temperature-sensitive solution (not shown) is applied to the whole of the auxiliary sheet 413 , and the whole of the auxiliary sheet 413 constitutes a temperature-sensitive area 431 . Moreover, the length of the width direction W of the auxiliary sheet 413 is longer than the length of the width direction W of the absorber 411 , and the temperature sensitive area 431 is arranged in a wider area in the width direction W than the absorber 411 .

The temperature-sensing solution contains a temperature-sensing agent that activates TRP ion channels, and a vehicle. The sanitary napkin 401 is fixed to the clothing 419, and the temperature-sensing solution permeable sheet 407 contained in the temperature-sensing region 431 (auxiliary sheet 413) contacts the wearer's skin during use, so that the wearer's skin is The TRP ion channel of the portion in contact with the warming agent which is in contact with the warming agent can be efficiently activated, and a warm feeling can be efficiently imparted to the lower abdomen of the wearer.

By imparting a feeling of warmth to the lower abdomen of the wearer, as a result of activating the TRP ion channel of the part of the skin of the wearer's lower abdomen that is in contact with the warming agent, it can be expected that the sympathetic nervous system will make the TRP ion channel active. Heat is generated from the portion in contact with the warming agent to raise the temperature of the portion contacting the warming agent on the wearer's skin, thereby warming the portion close to the wearer's uterus and relieving the wearer's physiological pain. In addition, by warming the area close to the wearer's uterus, it can be expected to reduce the wearer's premenstrual syndrome (Premenstrual Syndrome), fear of cold, menopausal disorders, and the like.

As shown in FIGS. 12 and 13 , the auxiliary sheet 413 is a plurality of concentric circles (C ₁ , C ₂ , C centered on the center in the longitudinal direction L of the auxiliary sheet 413 and the center C in the width direction W as the center) ₃ and C ₄ ) are provided with a plurality of embossed portions 437 on the respective concentric circles. The concentric circle C ₁ , the concentric circle C ₂ , the concentric circle C ₃ , and the concentric circle C ₄ have radii of r, 3r, 5r, and 7r when the radius of the concentric circle _C1 is r, respectively. In addition, the plurality of embossed portions 437 are arranged at equal intervals on each of the plurality of concentric circles (C ₁ , C ₂ , C ₃ and C ₄ ).

The temperature-sensing region 431 is divided into a temperature-sensing application portion 433 , and a temperature-sensing peripheral portion 435 is arranged around the outer edge 439 of the temperature-sensing application portion 433 . The above-mentioned concentric circles C ₁ , concentric circles C ₂ , concentric circles C ₃ , and concentric circles C ₄ , and the plurality of embossed portions 437 are arranged on the temperature-sensing application portion 433 , and are not arranged on the temperature-sensing peripheral portion 435 . Embossed part 437. Therefore, the thickness of the auxiliary sheet 413 in the warmth-sensing portion 433 is thinner than that of the warmth-sensing peripheral portion 435 , and the fiber density of the auxiliary sheet 413 in the warmth-applying portion 433 is higher than that of the warmth-sensing peripheral portion 435 . In addition, although each part of the temperature-sensing application part 433 and the temperature-sensing peripheral part 435 contains a warming-sensing solution, the basis weight of the warming-sensing solution in the warming-sensing application part 433 is higher than the basis weight of the warming-sensing solution in the warming-sensing peripheral part 435 . many.

In addition, a part of the temperature-sensitive solution also migrates to the region on the side of the auxiliary sheet 413 of the liquid-permeable sheet 407 , and the region of the liquid-permeable sheet 407 on the side of the auxiliary sheet 413 also constitutes the temperature-sensitive region 431 , and a temperature-sensing application portion 433 is provided. and the peripheral portion 435 for the sense of warmth. Also, in the region of the liquid permeable sheet 7 on the auxiliary sheet 413 side, the basis weight of the warm feeling solution in the warm feeling applying portion 433 is larger than the basis weight of the warm feeling solution in the warm feeling peripheral portion 435 .

The inventors of the present invention have found that the time until a desired temperature is felt (warm feeling time) tends to be longer for a heat-sensing article containing a heat-sensing agent than for a heat-generating article containing a heat-generating agent (for example, iron powder), and in This warm feeling time makes it easy for the wearer to feel itching. In addition, the inventors of the present application found that the wearer is more likely to feel itching during the above-mentioned warm feeling time, especially in the vicinity of the boundary between the warm area and other areas (that is, near the outer edge of the warm area).

When the wearer wears the sanitary napkin 401, the warm feeling solution of the warm feeling application portion 433 imparts a predetermined warm feeling effect on the lower abdomen of the wearer, and the warm feeling solution of the warm feeling peripheral portion 435 is mainly used in the above-mentioned area. The warm feeling time gives a weaker warming effect to the lower abdomen of the wearer than the warm feeling solution of the warm feeling application part 433, and the wearer is less likely to feel itching on the lower abdomen.

In addition, the first folding axis F ₃ in the width direction, the first folding axis F ₁ in the longitudinal direction, and the second folding axis F ₂ in the longitudinal direction are in the unfolded state of the sanitary napkin 401 and the packaging sheet 429 due to the difference between the auxiliary sheet 413 and the auxiliary sheet 413. (The temperature-sensing region 431) is repeatedly arranged in the thickness direction T, so that the user's pelvic lymph nodes (internal iliac lymph nodes, obturator lymph nodes, external iliac lymph nodes, anterior sacral lymph nodes, common iliac lymph nodes, and parametrial lymph nodes) can be further targeted. , sacral lymph nodes, supra-inguinal lymph nodes, para-aortic lymph nodes, etc.), groin lymph nodes (superficial inguinal lymph nodes, deep inguinal lymph nodes, etc.) give warmth.

Fig. 15 is a diagram for explaining an underpants-type sanitary napkin 501 as a temperature-sensing article according to another embodiment (hereinafter referred to as "second embodiment") according to the present invention (invention B), and shows the wearing state 's diagram. In addition, in the following, "underpants-type sanitary napkin according to the second embodiment as a heat-sensing article" may be simply referred to as "underpants-type sanitary napkin according to the second embodiment".

The underpants-type sanitary napkin 501 according to the second embodiment includes an underpants portion 503 and an absorbent article portion 505 arranged on the inner surface of the underpants portion 503 . The absorbent article portion 505 includes, in the absorbent body 507, a liquid-permeable sheet (not shown) that is in contact with the wearer's skin during wearing, and a liquid-impermeable sheet (not shown) that is in contact with the underwear portion 503. ), and the absorber 511 disposed therebetween. In addition, the absorbent article portion 505 includes, in the temperature-sensitive body 509, a liquid-permeable sheet (not shown) that comes into contact with the wearer's skin during wearing, and a liquid-impermeable sheet (not shown) that comes into contact with the underwear portion 503. (not shown), and the auxiliary sheet 513 and the shape maintaining member 515 arranged between them.

In addition, the liquid-permeable sheet (not shown) in the absorption body 507 and the liquid-permeable sheet (not shown) in the temperature-sensitive body 509 are constituted by sheets integrally formed of non-woven fabrics. In addition, the liquid-impermeable sheet (not shown) in the absorption body 507 and the liquid-impermeable sheet (not shown) in the temperature-sensitive body 509 are also constituted by an integral sheet.

The auxiliary sheet 513 of the temperature-sensitive body 509 is made of nonwoven fabric similarly to the auxiliary sheet 413 in the first embodiment, and includes a plurality of embossed portions 523 . The entire auxiliary sheet 513 is coated with a warming solution (not shown) containing a warming agent for activating TRP ion channels and a solvent, and the entire auxiliary sheet 513 constitutes a warming area 517 . In the warm feeling region 517 of the auxiliary sheet 513 , the basis weight of the warm feeling solution in the warm feeling applying portion 519 is larger than the basis weight of the warm feeling solution in the warm feeling peripheral portion 521 .

In addition, a part of the temperature-sensitive solution also migrates to the area on the side of the auxiliary sheet 513 of the liquid-permeable sheet (not shown), although the area on the side of the auxiliary sheet 513 of the liquid-permeable sheet (not shown) also constitutes the temperature-sensitive area 517 However, even in the region on the side of the auxiliary sheet 513 of the liquid permeable sheet (not shown), the basis weight of the warm feeling solution in the warm feeling applying portion 519 is higher than the basis weight of the warm feeling solution in the warm feeling peripheral portion 521 More.

In this way, the underpants-type sanitary napkin 501 according to the second embodiment is similar to the sanitary napkin 401 according to the first embodiment, while suppressing the wearer's feeling of itchiness, and allowing the wearer's uterus to be close to the wearer's uterus. The part gives a sense of warmth. Furthermore, while suppressing the wearer's feeling of itching, the TRP ion channel in the part close to the wearer's uterus is activated, and heat is generated from the part in contact with the warming agent via the sympathetic nervous system, so that it can be expected to make the wearer close to the wearer's uterus. The temperature of the part of the user's uterus rises. As a result, it is expected that the wearer's physiological pain will be alleviated, and the wearer's premenstrual syndrome (Premenstrual Syndrome), chills, menopausal disorders, and the like can be expected to be alleviated.

FIG. 16 is a diagram illustrating a disposable diaper 601 for adults as a temperature-sensitive article according to yet another embodiment (hereinafter referred to as “third embodiment”) according to the present invention (invention B), and shows Figure of wearing state. In addition, hereinafter, "the disposable diaper according to the third embodiment as a temperature-sensitive article" may be simply referred to as "the disposable diaper according to the third embodiment".

A disposable diaper 601 according to the third embodiment includes a liquid-permeable sheet 603 that is in contact with the wearer's skin, a liquid-impermeable sheet 605, a liquid-permeable sheet 603 disposed on the liquid-impermeable sheet 603, and a liquid-impermeable sheet 605. The absorber 607 between the sheets 605 , and the auxiliary sheet 609 which is arranged forward of the absorber 607 and between the liquid-permeable sheet 603 and the liquid-impermeable sheet 605 .

The auxiliary sheet 609 is arranged so as to correspond to the lower abdomen of the wearer when the disposable diaper 601 is worn. The auxiliary sheet 609 is made of nonwoven fabric similarly to the auxiliary sheet 413 in the first embodiment, and includes a plurality of embossed portions 617 . The entire auxiliary sheet 609 is coated with a warming solution (not shown) containing a warming agent for activating TRP ion channels and a solvent, and the entire auxiliary sheet 609 constitutes a warming area 611 . Also in the warm feeling region 611 of the auxiliary sheet 609 , the basis weight of the warm feeling solution in the warm feeling application portion 613 is larger than the basis weight of the warm feeling solution in the warm feeling peripheral portion 615 .

In addition, a part of the temperature-sensitive solution also migrates to the area on the auxiliary sheet 609 side of the liquid-permeable sheet 603 , and the area on the auxiliary sheet 609 side of the liquid-permeable sheet 603 also constitutes the temperature-sensitive area 611 , and has a temperature-sensitive application portion 613 and the peripheral portion 615 of the warm feeling. Also, in the region on the auxiliary sheet 609 side of the liquid permeable sheet 603 , the basis weight of the warming solution in the warming applying portion 613 is larger than that in the warming peripheral portion 615 .

In this way, according to the disposable diaper 601 of the third embodiment, it is possible to give a warm feeling to the lower abdomen of the wearer while suppressing the wearer's feeling of itching. Furthermore, while suppressing the wearer's feeling of itching, the TRP ion channel of the portion in contact with the warming agent, which is close to the skin of the lower abdomen of the wearer, is activated, and the heat is released from the warmer via the sympathetic nervous system. A feeling agent contact part is generated, and it can be expected to raise the temperature of the warm feeling agent contact part of the wearer's skin.

As a result, when the wearer of the disposable diaper 601 is a woman, it can be expected that (i) the prostaglandin, which is a factor of menstrual pain, is excreted, the muscles such as the uterine muscle are relaxed, and the menstrual pain is relieved, and (ii) Promote blood circulation, promote lymph flow, discharge old waste, improve coldness, burn fat, (iii) improve immunity, etc. When the wearer of the disposable diaper 601 is a male, it can be expected to (i) excrete prostaglandins, relax muscles, relieve pain, (ii) promote blood circulation, promote the flow of lymph, and discharge old waste, Improve coldness, let fat burn, (iii) improve immunity, etc.

17 to 21 are diagrams for explaining a temperature-sensitive sheet 701 as a temperature-sensitive article according to yet another embodiment (hereinafter referred to as "fourth embodiment") of the present invention (invention B). In addition, hereinafter, "the temperature-sensitive sheet according to the fourth embodiment as a temperature-sensitive article" may be simply referred to as "the temperature-sensitive sheet according to the fourth embodiment". Specifically, FIG. 17 is a perspective view of an individual package body 703 of a temperature-sensitive sheet in which the temperature-sensitive sheet 701 is individually packaged according to the fourth embodiment. FIG. 18 is a perspective view of a temperature-sensitive sheet 701 according to the fourth embodiment. FIG. 19 is an exploded perspective view of a temperature-sensitive sheet 701 according to the fourth embodiment. FIG. 20 is a plan view of the auxiliary sheet 709 . FIG. 21 is a diagram showing a wearing state of the temperature-sensitive sheet 701 according to the fourth embodiment. In addition, the "individual package of temperature-sensitive sheet" may be simply referred to as "individual package" below.

The temperature-sensitive sheet 701 according to the fourth embodiment is composed of a liquid-permeable sheet 707 abutting against the wearer's skin, an auxiliary sheet 709, a liquid-impermeable sheet 711 abutting on clothing, and being fixed in liquid The impermeable sheet 711 is provided in the order of adhering the liquid-impermeable sheet 711 to the adhesive portion 713 for the clothing 721 and the release sheet 715 for temporarily fixing the adhesive portion 713, and has a longitudinal direction L orthogonal to each other. , the width direction W and the thickness direction T. Moreover, the liquid-permeable sheet 707 has a skin contact surface 731 and a non-skin contact surface 733 .

The auxiliary sheet 709 is composed of a first sheet 709a and a second sheet 709b having a smaller area than the first sheet 709a. The shapes in the side direction L and the width direction W) are similar to each other. The centers (not shown) of the first sheet 709a and the second sheet 709b are stacked in the thickness direction T so as to overlap.

In addition, the auxiliary sheet 709 is formed by coating the entire auxiliary sheet 709 with a temperature-sensing solution (not shown) containing a temperature-sensing agent for activating TRP ion channels and water as a hydrophilic solvent. Specifically, the portion where the first sheet 709a and the second sheet 709b of the auxiliary sheet 709 overlap is applied from the liquid-permeable sheet 707 side so that the temperature-sensitive solution has a predetermined basis weight n (g/m ² ), The portion of the first sheet 709a that does not overlap with the second sheet 209b was applied from the liquid-permeable sheet 707 side so that the temperature-sensitive solution had a basis weight of 0.5n (g/m ² ). In addition, in FIG. 20, X represents the quantity of the temperature-sensitive solution contained in the 1st sheet|seat 709a and the 2nd sheet|seat 709b.

The auxiliary sheet 709 constitutes a temperature-sensitive area 741 as a whole, and the overlapping portion of the first sheet 709a and the second sheet 709b of the auxiliary sheet 709 is divided into a temperature-sensing application portion 743, and only the first sheet 709a of the auxiliary sheet 709 A portion (a portion that does not overlap with the second sheet 709 b ) is defined as a temperature-sensing peripheral portion 745 . In the warm feeling region 741 of the auxiliary sheet 709 , the basis weight of the warm feeling solution in the warm feeling applying portion 743 is larger than the basis weight of the warm feeling solution in the warm feeling peripheral portion 745 .

In addition, a part of the temperature-sensitive solution also migrates to the region on the auxiliary sheet 709 side of the liquid-permeable sheet 707 , and the region on the auxiliary sheet 709 side of the liquid-permeable sheet 707 also constitutes a temperature-sensitive region 741 and includes a temperature-sensing application portion 743 and the peripheral portion 745 for the sense of warmth. Also, in the region on the auxiliary sheet 709 side of the liquid permeable sheet 707 , the basis weight of the warm feeling solution in the warm feeling applying portion 743 is larger than the basis weight of the warm feeling solution in the warm feeling peripheral portion 745 .

The temperature-sensitive sheet 701 has a folding axis F ₆ extending parallel to the width direction W at the center of the longitudinal direction L. As shown in FIG. The individual package 703 is packaged by the packaging sheet 705 by folding the skin contact surface 731 of the liquid-permeable sheet 707 inward with the temperature _- sensitive sheet 701 as the base axis.

The adhesive portion 713 is composed of a plurality of adhesive portion portions 714 . Each of the plurality of adhesive portions 714 extends toward the widthwise direction W, and reaches both ends of the widthwise direction W of the temperature sensitive sheet 701 . The plurality of adhesive portions 714 are arranged at predetermined intervals in the longitudinal direction L. As shown in FIG. The release sheet 715 has the same shape as the outer edge of the liquid-impermeable sheet 711, and is arranged so as to cover the entirety of the adhesive portion 713 (a plurality of adhesive portion portions 714).

As shown in FIG. 17 , the temperature-sensitive sheet 701 is packaged by the packaging sheet 705 in a state folded in half to form an individual package 703 . Specifically, the individual package 703 is a thermal sheet 701 folded inward with the skin-contacting surface 731 of the liquid _- permeable sheet 707 between two packing sheets 705 with the folding axis F6 as the base axis. It is formed by providing the sealing part 735 on the peripheral edge of the packaging sheet 705 of two sheets.

When the user uses the thermal sheet 701 , the individual package 703 is unsealed from the notch 737 of the individual package 703 , the thermal sheet 701 is taken out from the individual package 703 , and the release sheet 715 is peeled off from the thermal sheet 701 . Next, the wearer fixes the adhesive portion 713 of the temperature-sensitive sheet 701 to the clothing 721, specifically, the inner surface of the underpants, with the skin-contacting surface 731 of the temperature-sensitive sheet 701 in contact with the wearer's skin. The temperature sensitive sheet 701 is used.

When the wearer wears the warm feeling sheet 701, the warm feeling solution of the warm feeling application part 743 imparts a predetermined warm feeling effect to the skin of the wearer, and the warm feeling solution of the warm feeling peripheral part 745 is mainly used for the above-mentioned warming. Feeling time imparts a weaker warming effect to the skin of the wearer than the warm feeling solution of the warm feeling application part 743 , and the wearer is less likely to feel itching near the place where the warm feeling sheet 701 is attached.

In the temperature-sensing article of the present invention (Invention B), the temperature-sensing solution contains a temperature-sensing agent that activates TRP ion channels, and a vehicle. As the above-mentioned warming agent and solvent, those exemplified in connection with Invention A can be mentioned, and the description thereof will be omitted.

The aforementioned warming solution preferably contains 0.0001 to 5.0 mass % of the aforementioned warming agent, more desirably 0.0005 to 3.0 mass %, still more desirably 0.1 to 1.0 mass %, and most desirably 0.3 to 0.7 mass % . From the viewpoint of the thermal effect.

The temperature-sensing article of the present invention (Invention B) is not particularly limited to a temperature-sensing region including a temperature-sensing solution containing a temperature-sensing agent for activating TRP ion channels and a solvent, and may be provided anywhere. For example, when the temperature-sensitive article of the present invention (Invention B) is an absorbent article provided with an absorber, the temperature-sensitive region may be arranged at a position (i) overlapping the absorber in the thickness direction of the absorbent article; (ii) and The position where the absorber does not overlap in the thickness direction of the absorbent article is, for example, the position forward in the longitudinal direction of the absorbent article relative to the absorber, and the position rearward in the longitudinal direction of the absorbent article relative to the absorber.

Moreover, when the temperature sensitive article of this invention (Invention B) is an absorbent article provided with an absorber, it is preferable that the length of the width direction of a temperature sensitive area which comprises an absorbent article is longer than an absorber. From the viewpoint of the thermal effect. When the temperature-sensitive article of the present invention (Invention B) is a temperature-sensitive sheet, the temperature-sensitive region can be arranged at a desired position.

The temperature-sensing article of the present invention (Invention B) includes, in the temperature-sensing region, a temperature-sensing application portion, and a temperature-sensing peripheral portion arranged around the temperature-sensing application portion. If the temperature-sensing peripheral portion is arranged around the temperature-sensing application portion, the temperature-sensing application portion may be arranged around the plane direction of the temperature-sensitive article (the longitudinal direction and the widthwise direction of the temperature-sensitive article), but it is not necessary to install the temperature-sensing application portion. From the viewpoint of not easily feeling itchy, the ideal configuration of the peripheral part of the temperature sensor on the outer edge of the temperature application part is more than 50%, more ideally more than 70%, more ideally more than 90%, and the most ideal is 100%. % (that is, the temperature-sensing peripheral portion is the one where the temperature-sensing application portion is arranged around the plane direction of the temperature-sensing article) is ideal.

In the temperature-sensing article of the present invention (Invention B), the basis weight of the temperature-sensing agent in the temperature-sensing application portion of the temperature-sensing region is preferably a temperature-sensing solution containing a basis weight of 0.001-10 g/m ² , more preferably 0.003-10 g/m 2 . A temperature-sensing solution with a basis weight of 5 g/m ² is more ideally a temperature-sensing solution containing a basis weight of 0.01 to 2.5 g/m ² , and more preferably a temperature-sensing solution containing a basis weight of 0.05 to 1.5 g/m ² solution. From the point of view of giving the wearer a sense of warmth.

In the warm feeling area of the warm feeling article of the present invention (Invention B), the basis weight of the warm feeling solution in the warm feeling peripheral part is smaller than the basis weight of the warm feeling solution in the warm feeling application part, and the warm feeling in the warm feeling peripheral part is smaller. The basis weight of the solution is preferably 90% by mass or less, more preferably 70% by mass or less, and still more preferably 50% by mass or less of the basis weight of the temperature-sensing solution in the temperature-sensing application part. It is from the viewpoint that the wearer does not easily feel itching during the warm feeling time, especially in the vicinity of the outer edge of the warm feeling area.

In the warm feeling region of the warm feeling article of the present invention (Invention B), the basis weight of the warm feeling solution in the warm feeling peripheral portion is preferably 10% by mass or more of the basis weight of the warm feeling solution in the warm feeling application portion, more preferably It is 30 mass % or more, and more preferably, it is 50 mass % or more. It is from the viewpoint that the wearer does not easily feel itching during the warm feeling time, especially in the vicinity of the outer edge of the warm feeling area.

In the temperature-sensing article of the present invention (Invention B), the basis weight of the temperature-sensing solution in the temperature-sensing application portion and the temperature-sensing peripheral portion was measured as follows. (1) Prepare a plurality of temperature-sensitive articles, take out the temperature-sensitive area from each temperature-sensitive article, and solidify the temperature-sensitive solution in the temperature-sensitive area with liquid nitrogen. (2) Cut out a predetermined area having a planar direction: S ₁ (m ² ), and a predetermined area having a planar direction: S ₂ (m ² ) from the temperature sensing region where the temperature sensing solution is solidified using a cutter or the like ) of the temperature-sensing periphery. The above-mentioned predetermined area is, for example, 1.0×10 ⁻⁴ (m ² , 1 cm×1 cm). (3) Measure the mass of the temperature-sensing application part: m ₁ (g). (4) Wash the temperature-sensitive application portion with a cleaning solvent suitable for the polarity of the temperature-sensing solution (for example, toluene when the solvent for the temperature-sensing solution is a lipophilic solvent; ethanol when the solvent for the temperature-sensing solution is a hydrophilic solvent).

(5) The washed temperature-sensing application portion was dried at 70° C. for 1 hour, and the mass after drying was measured: m ₂ (g). (6) From the following formula: bs(g/m ² )=(m ₁ −m ₂ )/S ₁ , the basis weight of the temperature-sensing solution in the temperature-sensing application portion is calculated. (7) The basis weight of the temperature-sensing application part was measured 10 times in total for different temperature-sensing articles, and the average value was used as the basis weight of the temperature-sensing solution in the temperature-sensing application part. (8) The basis weight of the temperature-sensing peripheral portion was measured in the same manner as the basis weight of the temperature-sensing application portion. In addition, as long as it is the height of the basis weight of the temperature-sensing application part and the temperature-sensing peripheral part, it can be visually evaluated using an optical microscope or the like.

In the temperature-sensing region of the temperature-sensing article of the present invention (Invention B), 100% of the outer edge of the temperature-sensing application portion (that is, the temperature-sensing peripheral portion is arranged around the plane direction of the temperature-sensing article). It is desirable that the peripheral portion of the thermal sensation is ideal, and that the outer edge of the thermal sensation application portion and the peripheral portion of the thermal sensation peripheral portion are almost similar in shape. It is from the viewpoint that there is no unevenness and itching is not easily felt by the wearer during the warm feeling time, especially in the vicinity of the outer edge of the warm feeling area.

When the outer edge of the temperature-sensing application portion and the outer edge of the temperature-sensing peripheral portion are almost similar in shape, the center of the outer edge shape of the shape surrounded by the outer edge of the temperature-sensing application portion and the outer edge shape of the temperature-sensing peripheral portion The center of the heat sensor is arranged at almost the same position, and the outer edge shape of the temperature-sensing application portion is ideally 10 to 90% of the area ratio of the outer edge shape of the temperature-sensing peripheral portion, and more preferably 20 to 80%. The area ratio is more ideal, and the area ratio is 40~70%. It is from the viewpoint that the wearer does not easily feel itching during the warm feeling time, especially in the vicinity of the outer edge of the warm feeling area, and the wearer can feel a sufficient warm feeling afterwards.

In the warm-sensing region of the warm-sensing article of the present invention (Invention B), the basis weight of the warm-sensing agent in the warm-sensing peripheral portion is smaller than the basis weight of the warm-sensing agent in the warm-sensing application portion, but such a warm-sensing agent The distribution of , for example, can be achieved by applying a larger amount of the temperature-sensing solution to the temperature-sensing application portion than the temperature-sensing peripheral portion.

In addition, when the temperature-sensing region is made of a woven fabric, for example, a non-woven fabric, by adopting (i) a structure in which the fiber density of the temperature-sensing application portion is higher than that of the temperature-sensing peripheral portion (hereinafter referred to as "structure 1") , (ii) adopt a structure in which the basis weight of the warmth-sensing portion is higher than that of the warm-sensing peripheral portion (hereinafter referred to as "structure 2"), and (iii) the polarity of the fabric constituting the warmth-sensing portion is set to be close to the temperature The polarity of the sensory solution (for example, the polarity of the solvent) (for example, when the temperature-sensing solution contains a lipophilic solvent, the polarity of the fabric constituting the temperature-sensing application portion is set to lipophilic), and the polarity of the fabric constituting the temperature-sensing peripheral portion is set. A structure (hereinafter referred to as "structure") with a polarity far from the polarity of the warm-sensing solution (for example, the polarity of the solvent) (for example, when the warm-sensing solution contains a lipophilic solvent, the polarity of the fabric constituting the warm-sensing peripheral portion is set to hydrophilic) 3"), even when the temperature-sensing solution is uniformly applied to the temperature-sensing region, the basis weight of the temperature-sensing agent in the temperature-sensing peripheral portion is likely to be smaller than that of the warming-sensing application portion. In addition, of course, in the above-mentioned structures 1 to 3, a larger amount of the temperature-sensing solution may be applied to the temperature-sensing application portion than the temperature-sensing peripheral portion.

The woven fabric having the above-mentioned structure 1 is, for example, the auxiliary sheet 413 of the sanitary napkin 401 shown in the first embodiment, and can be produced by forming a plurality of embossed portions on a woven fabric having a uniform basis weight. For example, (a) the embossing strength of the embossed part (for example, the thickness of the embossed part/the thickness of the non-embossed part), (b) the number density of the embossed part (for example, The number of embossed parts/the area of the warmth-applying part is the plane direction of the fabric), (c) the area ratio of the embossed part (for example, the total area of the embossed parts/the area of the warmth-applying part is both (a) the embossing strength of the embossed part (for example, the thickness of the embossed part/the thickness of the non-embossed part), (b) the individuality of the embossed part Number density (for example, the number of embossed parts/the area of the warmth-sensing peripheral part is the plane direction of the fabric), (c) the area ratio of the embossed part (for example, the total area of the plurality of embossed parts/the warm-feeling periphery The area of the part is the plane direction of the fabric) and so on.

The woven fabric having the above-mentioned structure 2 is, for example, the auxiliary sheet 709 of the temperature-sensitive sheet 701 shown in the third embodiment, which can be produced by laminating a plurality of woven fabrics. In addition, the woven fabric having the above-mentioned structure 1 and structure 2 can be based on, for example, the descriptions in Japanese Patent Laid-Open No. 2008-138340, Japanese Patent Laid-Open No. 2008-144322, Japanese Patent Laid-Open No. 2008-264084, and Japanese Patent Laid-Open No. 2008-266813 to manufacture.

The woven fabric having the above-mentioned structure 3 can be produced by, for example, treating the woven fabric with a hydrophilizing agent, a lipophilizing agent, or the like known in the technical field. In addition, the hydrophilizing agent and the lipophilizing agent are as described above.

In the warm feeling article of the present invention (Invention B), the warm feeling solution may contain at least one of the following types in addition to the above-mentioned warm feeling agent and solvent, as long as the effect of imparting warm feeling to the wearer is not hindered of other ingredients.

As for the above-mentioned at least one other component, for example, what is exemplified as a cooling agent in Invention A, and what is exemplified as "at least one other component" can be mentioned.

The inventors of the present invention have found that when the warming solution further contains a cooling agent for activating TRP ion channels in addition to the warming agent for activating TRP ion channels, the wearer is in contact with the warming solution during the aforementioned warming sensation time. Itching is not easily felt in the part and its surrounding area.

In the warming article of the present invention (Invention B), when the warming solution further contains a cooling agent, the warming solution desirably contains 0.0001 to 5.0 mass % of the cooling agent, more desirably 0.0005 to 3.0 mass % of the cooling agent, and even more It is desirable to contain a cooling agent in an amount of 0.1 to 1.0 mass %, and it is most desirable to contain a cooling agent in an amount of 0.3 to 0.7 mass %. It is from the viewpoint that the wearer is less likely to feel itching during the warm feeling time, and is less likely to feel an excessive cooling sensation.

In the warming article of the present invention (Invention B), when the warming solution further contains a cooling agent, the warming solution preferably contains the warming agent and the cooling agent in a mass ratio of 20:1 to 1:10, more desirably The temperature-sensing agent and the cooling-sensing agent are contained in a mass ratio of 10:1 to 1:5, and more preferably, the warming-sensing agent and the cooling-sensing agent are contained in a mass ratio of 2:1 to 1:1. It is from the viewpoint that the wearer is less likely to feel itching during the warm feeling time, and is less likely to feel a cool feeling, and is more likely to feel a warm feeling.

It is preferable that the temperature-sensitive article of the present invention (Invention B), especially the temperature-sensitive solution described above, does not contain an exothermic agent like the temperature-sensitive article of Invention A. The above-mentioned exothermic agents include those listed in Invention A. In the temperature-sensitive article of the present invention (Invention B), the liquid-permeable sheet is not particularly limited as long as it has liquid-permeability, and those listed in Invention A are exemplified.

The temperature-sensitive article of the present invention (Invention B) can have elastic strain properties like the temperature-sensitive article of Invention A. Since the method for imparting elastic strainability to the temperature-sensitive article of the present invention (Invention B) is the same as that described in Invention A, these are used and detailed descriptions are omitted.

In the temperature-sensitive article of the present invention (Invention B), the liquid-permeable sheet, like the temperature-sensitive article of Invention A, may contain a heat-generating material, a heat-insulating material, a hygroscopic material, and any combination of these. The material selected by the formed group (hereafter, it may only be referred to as "functional material"). Since the above-mentioned functional materials are the same as those listed in Invention A, descriptions thereof will be omitted.

In the temperature-sensing article of the present invention (Invention B), the liquid-impermeable sheet can be the same as those listed in Invention A, so the description is omitted. The temperature-sensitive article of the present invention (Invention B) may include additional members between the liquid-permeable sheet and the liquid-impermeable sheet, for example, an auxiliary sheet, an absorber, and the like. The above-mentioned auxiliary sheets are the same as those listed in Invention A, so the description is omitted.

Since the said absorber is the same as what was enumerated in invention A, description is abbreviate|omitted. An absorbent article is mentioned as a temperature-sensitive article provided with the said absorber. The temperature-sensitive article of the present invention (Invention B) may include an adhesive portion for fixing the temperature-sensitive article to clothing, the wearer's skin, or the like, and the adhesive portion may be the same as that described in Invention A. are the same, so the description is omitted.

The temperature-sensitive article of the present invention (Invention B) is preferably packaged by a packaging sheet before use, as with the temperature-sensitive article of Invention A. As for the packaging sheet, the same as those listed in Invention A can be mentioned. Therefore, the description is omitted.

The temperature-sensitive article of the present invention (Invention B) is not particularly limited as long as it includes a temperature-sensitive region containing a temperature-sensitive solution, and examples thereof include absorbent articles, temperature-sensitive sheets, and the like. The above-mentioned absorbent article is not particularly limited, and the same as those listed in Invention A can be mentioned, so the description is omitted.

The temperature-sensitive article of the present invention (Invention B) has the following structure like the temperature-sensitive article of Invention A [(i) the temperature-sensitive article is an absorbent article including an absorber, and (ii) the temperature-sensitive region and the absorber are arranged In a position where the thickness direction of the absorbent article does not overlap, and (iii) the widthwise folded axis of the temperature-sensitive article extending in the widthwise direction of the absorbent article is folded in the longitudinal direction], the widthwise folded axis Ideally, in the unfolded state of the temperature-sensitive article, the temperature-sensing region and the temperature-sensing region are arranged to overlap in the thickness direction of the temperature-sensitive article. The reason for this is omitted since the description related to the invention A is completed.

The temperature-sensitive article of the present invention (Invention B) has the following structure as in the temperature-sensitive article of Invention A [(i) the temperature-sensitive article is an absorbent article including an absorber, and (ii) the temperature-sensitive solution and the absorber are arranged in In a position where the thickness direction of the absorbent article does not overlap, and (iii) when the temperature-sensitive article is folded in the widthwise direction of the longitudinal folded axis extending in the longitudinal direction of the absorbent article, the longitudinal folded axis is The unfolded state of the temperature-sensitive article is ideally the temperature-sensitive area, and more preferably, the temperature-sensitive application portion of the temperature-sensitive area is arranged to overlap in the thickness direction of the temperature-sensitive article. As for the reason, since the description related to the invention A is completed, the description is omitted.

The above-mentioned temperature-sensing sheet, clothing to which the clothing-fixing-type temperature-sensing sheet is fixed, the portion where the temperature-sensing sheet can impart warmth, the position of the temperature-sensing region containing the temperature-sensing solution, etc., are the same as those listed in Invention A. , so the description is omitted.

<Invention C> [definition] ・"Inside" and "Outside" In the present invention (Invention C), "inner side" and "outer side" in the width direction of the absorbent article, the two parts of the comparison represent the case of approaching the long-side axis of the absorbent article and the case of being far away, respectively. For example, regarding the "inner heat-sensing region" and the "outer heat-sensing region", the "inner heat-sensing region" is arranged at a position closer to the longitudinal axis of the absorbent article than the "outer heat-sensing region" that must be compared. On the other hand, the "outside heat-sensing region" is disposed at a position farther away from the long-side axis of the absorbent article than the "inside heat-sensing region" that must be aligned.

・"Length" and "Width" In the present invention (Invention C), "the length in the longitudinal direction of the absorbent article" may be simply referred to as "length", and there may be cases where "the length in the transverse direction of the absorbent article" is simply referred to as "width" .

Hereinafter, the absorbent article (warm-sensitive article) of the present invention (Invention C) will be described in detail. 22 to 25 are diagrams for explaining one embodiment (hereinafter referred to as "first embodiment") according to the present invention (invention C) for sanitary napkin 801 as an absorbent article (warm-feeling article). . In addition, hereinafter, "the sanitary napkin according to the first embodiment as an absorbent article" is simply referred to as "the sanitary napkin according to the first embodiment". Specifically, FIG. 22 is a plan view of the sanitary napkin 801 according to the first embodiment. FIG. 23 is an exploded perspective view of the sanitary napkin 801 according to the first embodiment. FIG. 24 is a diagram for explaining the inner warmth-sensing region 819 and inner warmth-sensing region 820 , the outer and outer warmth-sensing regions 821 and 822 , and the central temperature-sensing region 823 of the sanitary napkin 801 . FIG. 25 is a diagram showing a state in which the sanitary napkin 801 is attached.

The sanitary napkin 801 according to the first embodiment has a longitudinal direction L, a width direction W, and a thickness direction T that are orthogonal to each other. The sanitary napkin 801 includes: a liquid-permeable sheet 803 abutting against the wearer's skin during wearing, a liquid-impermeable sheet 805, a liquid-permeable sheet 803 and a liquid-impermeable sheet 805 abutting on clothing 817 during wearing Absorber 807 between permeable sheets 805 . The absorber 807 includes a pair of side edges 809 and side edges 810 extending in the longitudinal direction L. In other words, a pair of side edges 809 and side edges 810 are arranged at both ends in the widthwise direction W of the absorber 807 .

The sanitary napkin 801 is divided into overlapping regions 811 that do not overlap with the absorber 807 in the thickness direction T, and non-overlapping regions 813 that overlap the thickness direction T with the absorber 807 . The sanitary napkin 801 has a pair of side edge regions 815 and 816, each of which includes each of the pair of side edges 809 and 810, and has those extending in the widthwise direction W. Specifically, the overlapping region 811 of the side edge region 815 and the sandwiched side edge 809 exists across the non-overlapping region 813 , and the overlapping region 811 of the side edge region 816 and the sandwiched side edge 810 spans the non-overlapping region 813 exist. In addition, the liquid-permeable sheet 803 is arranged on both the overlapping region 811 and the non-overlapping region 813 .

The sanitary napkin 801 includes an adhesive portion 825 for fixing the sanitary napkin 801 to the clothing 817 of the wearer. One surface of the adhesive portion 825 is fixed to the liquid-impermeable sheet 805 , and the other surface is temporarily fixed to the inner surface of the releasable packaging sheet 833 .

When the sanitary napkin 801 is not in use, the first folding axis F ₁ in the longitudinal direction and the second folding axis F ₂ in the longitudinal direction extending in the longitudinal direction L together with the packaging sheet 833, and the longitudinal direction W extending in the width direction W. The first folding axis F ₃ in the widthwise direction and the second folding axis _F4 in the widthwise direction are folded as base axes to form an individual package (not shown) of the sanitary napkin 801 . Moreover, the longitudinal direction _1st folding axis F1 and the longitudinal direction _2nd folding axis F2 are respectively arrange|positioned at the position which overlaps with a pair of side edge 809 and side edge 810 of the absorber 807 in the thickness direction T. As shown in FIG. Moreover, the width direction 1st folding axis F ₃ and the width direction 2nd folding axis F ₄ are arrange|positioned at the front and the back of the sanitary napkin 801, respectively.

The individual package of the sanitary napkin 801 is made by folding the sanitary napkin 801 inward in the width direction W with the _first folding axis F1 in the longitudinal direction and the _second folding axis F2 in the longitudinal direction as the base axes. Next, the sanitary napkin 801 and the packaging sheet 833 are formed by folding the sanitary napkin 801 inward in the longitudinal direction _L using the first folded axis F3 in the widthwise direction and the second folded axis _F4 in the widthwise direction as base axes.

Also, the sanitary napkin 801 includes a pair of wing portions 827 for fixing the sanitary napkin 801 to the clothing 817, a sealing portion 829, an embossed portion 831, and the like, but it is well known in this technical field, so Description is omitted.

The side edge region 815 has a temperature-sensitive region 819 that is further inward in the widthwise direction W than the side edge 809 and is arranged on the inner side of the overlapping region 811 , and has a temperature-sensing region 819 that is further outside the widthwise direction W than the side edge 809 and is not arranged. The outer thermosensitive region 821 of the repeating region 813 is repeated. The inner temperature sensitive area 819 and the outer temperature sensitive area 821 are arranged in the excretion port contact area (not shown) in the longitudinal direction L.

Both the inner temperature-sensing area 819 and the outer temperature-sensing area 821 contain a temperature-sensing solution, and the temperature-sensing solution includes: a temperature-sensing agent that activates TRP ion channels, and a solvent, and the temperature-sensing solution in the outer temperature-sensing area 821 The basis weight of the solution is less than the basis weight of the temperature sensitive solution in the inner temperature sensitive area 819 . In this way, the wearer is less likely to feel the difference in the warming effect between the inner warm feeling region 819 and the outer warm feeling region 821, and the wearer is less likely to feel itching.

In addition, the side edge region 816 has the inner side in the widthwise direction W than the side edge 810 , is arranged inside the temperature sensitive region 820 of the overlapping region 811 , and has the outer side in the widthwise direction W than the side edge 810 , and It is arranged in the temperature sensitive area 822 outside the non-overlapping area 813 . The inner temperature sensitive area 820 and the outer temperature sensitive area 822 are arranged in the excretion port contact area (not shown) in the longitudinal direction L.

Both the inner temperature-sensing region 820 and the outer temperature-sensing region 822 contain a temperature-sensing solution, and the temperature-sensing solution includes: a temperature-sensing agent that activates TRP ion channels, and a solvent, and the temperature-sensing solution in the outer temperature-sensing region 822 The basis weight of the solution is less than the basis weight of the warm-sensitive solution in the inner warm-sensitive region 820 . In this way, the wearer is less likely to feel the difference in the warming effect between the inner warm feeling region 820 and the outer warm feeling region 822, and the wearer is less likely to feel itching.

Moreover, in the side edge area|region 815, the inner side temperature sensitive area|region 819 and the outer side temperature sensitive area|region 821 are adjoining with the side edge 809 in between. In this way, the wearer is less likely to feel the difference in the warming effect between the inner warm feeling region 819 and the outer warm feeling region 821, and the wearer is less likely to feel itching. Moreover, in the side edge area|region 816, the inner side temperature sensitive area|region 820 and the outer side temperature sensitive area|region 822 adjoin with the side edge 810 sandwiched|interposed therebetween. In this way, the wearer is less likely to feel the difference in the warming effect between the inner warm feeling region 820 and the outer warm feeling region 822, and the wearer is less likely to feel itching.

In addition, in the pair of side edge region 815 and side edge region 816, the inner temperature sensitive region 819 and the inner temperature sensitive region 820, and the outer thermal sensitive region 821 and the outer thermal sensitive region 822 are arranged in a nonwoven fabric. Liquid-permeable sheet 803 . In this way, the wearer can feel a warm feeling in the initial stage of wearing.

According to the sanitary napkin 801 of the first embodiment, the center temperature-sensing region 823 is provided between the side edge region 815 and the side edge region 816 . The central temperature-sensing region 823 further contains a temperature-sensing solution containing: a temperature-sensing agent that activates the TRP ion channel, and a solvent. The basis weight of the temperature-sensitive solution in each region of the inner temperature-sensitive region 819 and the inner-side temperature-sensitive region 820 of the side edge region 816 is larger. The basis weight of the temperature-sensing agent in the central temperature-sensitive area 823 where pressure is not easily applied during installation is higher than that of the inner temperature-sensitive area 819 of the side edge area 815 and the inner temperature-sensitive area 820 of the side edge area 816 where pressure is easily applied during installation The basis weight of the warm feeling solution in each of the 801 is larger, and the wearer can feel the warm feeling in the whole of the excretion port contact area (not shown) of the sanitary napkin 801 and its surrounding area, on the other hand, it is not easy to feel The difference in the warming effect between the inner warmth sensing area 819 and the inner warmth sensing area 820 and the central temperature sensing area 823 makes it difficult for the wearer to feel itching.

In addition, the center temperature sensitive area 823 is adjacent to both the inner temperature sensitive area 819 of the side edge area 815 and the inner temperature sensitive area 820 of the side edge area 816 . In this way, the wearer is less likely to feel the difference in the warming effect between the central warm feeling area 823 , the inner warm feeling area 819 , and the inside warm feeling area 820 , and the wearer is less likely to feel itching.

In addition, the central temperature-sensitive region 823 is arranged on the liquid-permeable sheet 803 made of nonwoven fabric. In this way, the wearer can feel a warm feeling at the initial stage of wearing the sanitary napkin 801 .

If the wearer wears the sanitary napkin 801, the central heat-sensitive area 823, the inner heat-sensitive area 819, the inner heat-sensitive area 820, and the outer heat-sensitive area 821 and the outer heat-sensitive area 822 are in contact with the wearer's excretion. It is not easy for the wearer to feel itching, and a warm feeling can be imparted to the wearer's excretion opening.

Fig. 26 is a diagram for explaining the underwear-type sanitary napkin 901 for use as an absorbent article (warm-feeling article) according to another embodiment (hereinafter referred to as "second embodiment") according to the present invention (invention C), and a diagram showing the installed state. In addition, in the following, "underpants-type sanitary napkin according to the second embodiment as an absorbent article" may be simply referred to as "underpants-type sanitary napkin according to the second embodiment".

The underpants-type sanitary napkin 901 according to the second embodiment has a longitudinal direction (not shown), a width direction W, and a thickness direction (not shown), and includes an underpants portion 903 and an underpants portion 903 arranged in the underpants portion 903. The absorbent article part 905 of the inner surface is constituted. The absorbent article portion 905 includes a liquid-permeable sheet (not shown) that comes into contact with the wearer's skin during wearing, a liquid-impermeable sheet (not shown) that comes into contact with the underwear portion 903, and a Absorber 907 in between. The absorber 907 includes a pair of side edges 909 and 910 extending in the longitudinal direction (not shown) of the underpants-type sanitary napkin 901 . In other words, a pair of side edges 909 and side edges 910 are arranged at both ends in the widthwise direction W of the absorber 907 . The underpants-type sanitary napkin 901 is further divided into: an absorber 907 , an overlapping region 911 where the thickness direction (not shown) of the underpants-type sanitary napkin 901 overlaps, and the thickness direction of the underpants-type sanitary napkin 901 (not shown) non-repetitive non-repetitive regions 913 .

The underpants-type sanitary napkin 901 has a pair of side edge regions 915 and side edge regions 916 , and each region includes one side edge 909 and one side edge 910 . In the underwear-type sanitary napkin 901, the pair of side edge regions 915 and the side edge regions 916 are respectively provided with a pair of side edges 909 and 910 of the absorber 907 that are located on the inner side in the widthwise direction W, and The inner temperature sensitive area 917 and the inner temperature sensitive area 918 are arranged in the overlapping area 911; Sensitive area 919 and outer temperature sensitive area 920 .

The inner temperature-sensitive area 917 and the inner temperature-sensitive area 918, and the outer temperature-sensitive area 919 and the outer temperature-sensitive area 920 are arranged on a liquid-permeable sheet (not shown) made of nonwoven fabric. In addition, the inner temperature-sensitive region 917 and the inner temperature-sensitive region 918; and the outer temperature-sensitive region 919 and the outer temperature-sensitive region 920 contain a temperature-sensitive solution containing: a temperature-sensing agent and a solvent for activating TRP ion channels, The basis weight of the temperature sensitive solution in the outer temperature sensitive area 919 is less than the basis weight of the temperature sensitive solution in the inner temperature sensitive area 917, and the basis weight of the temperature sensitive solution in the outer temperature sensitive area 920 is higher than that of the inner temperature sensitive area. The temperature sensitive solution in 918 has less basis weight. In addition, the inner temperature-sensitive area 917 and the inner temperature-sensitive area 918, and the outer temperature-sensitive area 919 and the outer temperature-sensitive area 920 are arranged in the same manner as those of the sanitary napkin 801 according to the first embodiment. In addition, the underpants-type sanitary napkin 901 according to the second embodiment does not have a central warmth-sensing region.

Therefore, after wearing the underwear-type sanitary napkin 901, the wearer is less likely to feel the warming effect between the inner temperature sensing area 917 and the inner temperature sensing area 918, and between the outer temperature sensing area 919 and the outer temperature sensing area 920. The difference is not easy to feel itching.

Fig. 27 is a diagram illustrating a disposable diaper 1001 for adults as an absorbent article (warm-sensitive article) according to yet another embodiment (hereinafter referred to as "third embodiment") according to the present invention (invention C). , and a diagram showing the wearing state. In addition, hereinafter, "the disposable diaper according to the third embodiment as an absorbent article" may be simply referred to as "the disposable diaper according to the third embodiment".

The disposable diaper 1001 according to the third embodiment has a longitudinal direction (not shown), a width direction W, and a thickness direction (not shown), and is provided with a liquid contacting the wearer's skin The permeable sheet 1003 , the liquid-impermeable sheet 1005 , and the absorber 1007 arranged between the liquid-permeable sheet 1003 and the liquid-impermeable sheet 1005 . The absorber 1007 includes a pair of side edges 1009 and 1010 extending in the longitudinal direction (not shown) of the disposable diaper 1001 . In other words, a pair of side edges 1009 and side edges 1010 are arranged at both ends in the width direction W of the absorber 1007 . The disposable diaper 1001 is further divided into: the absorber 1007 , the overlapping region 1011 where the thickness direction (not shown) of the disposable diaper 1001 is repeated, and the thickness direction of the disposable diaper 1001 (not shown) repeated non-repetitive regions 1013 .

The disposable diaper 1001 has a pair of side edge regions 1015 and side edge regions 1016, and each region includes one side edge 1009 and one side edge 1010. In the disposable diaper 1001, the pair of side edge regions 1015 and the side edge regions 1016 are respectively provided with the inner side in the width direction W of the pair of side edges 1009 and 1010 of the absorber 1007, respectively. and are arranged in the inner temperature sensitive area 1017 and the inner temperature sensitive area 1018 of the overlapping area 1011 ; and are arranged on the outer side of the width direction W than the pair of side edges 1009 and 1010 , and are arranged in the non-overlapping area 1013 . The outer temperature sensitive area 1019 and the outer temperature sensitive area 1020 .

In addition, the inner temperature sensitive area 1017 and the inner temperature sensitive area 1018, and the outer temperature sensitive area 1019 and the outer temperature sensitive area 1020 are arranged on the liquid-permeable sheet 1003 made of nonwoven fabric. In addition, the inner temperature-sensitive region 1017 and the inner temperature-sensitive region 1018; and the outer temperature-sensitive region 1019 and the outer temperature-sensitive region 1020 contain a temperature-sensing solution containing: a temperature-sensing agent and a solvent for activating TRP ion channels, The basis weight of the temperature sensitive solution in the outer temperature sensitive area 1019 is less than the basis weight of the temperature sensitive solution in the inner temperature sensitive area 1017, and the basis weight of the temperature sensitive solution in the outer temperature sensitive area 1020 is higher than that of the inner temperature sensitive area. The temperature sensitive solution in 1018 has less basis weight. By doing so, the wearer's lower abdomen can be given a warm feeling while making it difficult for the wearer to feel itching.

In the longitudinal direction (not shown) of the disposable diaper 1001, the inner heat-sensitive area 1017 and the inner heat-sensitive area 1018, the outer heat-sensitive area 1019 and the outer heat-sensitive area 1020, and the central heat-sensitive area 1021 are arranged It is located in front of the center part (not shown) in the longitudinal direction of the disposable diaper 1001, and is arranged on the front cloth.

Therefore, the wearer can feel a sense of warmth in the lower abdomen due to wearing the disposable diaper 1001 , such as warming the prostate gland for men, and warming the uterus for women.

In addition, when the wearer of the disposable diaper 1001 is a woman, it can be expected to (i) excrete prostaglandins, which are factors of menstrual pain, relax muscles such as uterine muscles, and relieve menstrual pain, and (ii) promote Blood circulation, promote the flow of lymph, discharge old waste, improve coldness, burn fat, (iii) improve immunity, etc. When the wearer of the disposable diaper 1001 is a male, it can be expected to (i) excrete prostaglandins, relax muscles, relieve pain, (ii) promote blood circulation, promote the flow of lymph, and discharge old waste, Improve coldness, let fat burn, (iii) improve immunity, etc.

The absorbent article (warmth-sensing article) of the present invention (Invention C) is one as long as each region of the pair of side edge regions includes each of the pair of side edges extending in the longitudinal direction of the absorbent article of the absorber, Its width is not particularly limited. In the width direction of the absorbent article, each side edge of the pair of side edge regions preferably has a width of 10% or more, more preferably 15% or more, of the width of the absorber with each of the pair of side edges as the center. width, and more ideally more than 20% of the width. Thereby, the wearer is less likely to feel itching in the pair of side edge regions of the absorber.

In the width direction of the absorbent article, each side edge of the pair of side edge regions preferably has a width of 60% or less of the width of the absorber, more preferably 50% or less, with each of the pair of side edges as the center. width, and more ideally a width below 40%. From the viewpoint of not hindering the absorbency of the absorber, and from the viewpoint of design constraints of the absorbent article, specifically, in the width direction of the absorbent article, never allow the pair of side edges of the absorber to From the viewpoint of such a design that each of the pair of side edges extending in the longitudinal direction of the absorbent article is too far apart.

In the absorbent article (warmth-sensitive article) of the present invention (Invention C), the inner temperature-sensitive region and the outer-side temperature-sensitive region are respectively arranged in each region of a pair of side edge regions, and the inner temperature-sensitive region is arranged in The inner side (overlapping region) of each of the pair of side edges and the outer heat-sensing region are not particularly limited as long as they are arranged on the outer side (non-overlapping region) of each of the pair of side edges, and can be arranged at any s position.

In each region of the pair of side edge regions, and in the widthwise direction of the absorbent article, the inner heat-sensitive region and the outer heat-sensitive region may be separated, but each side edge of the pair of side edges may be sandwiched therebetween. It is ideal to be adjacent to each other. Since the wearer is less likely to feel the difference in the warming effect between the inner warm feeling region and the outer warm feeling region, the wearer is less likely to feel itching.

In the absorbent article (warmth-sensing article) of the present invention (Invention C), the inner and outer heat-sensing regions in each region of the pair of side edge regions can be matched to parts that do not need to impart warmth to the wearer. And arrange|positioned at the arbitrary position of the longitudinal direction of an absorbent article. For example, in the absorbent article (warmth-sensitive article) of the present invention (invention C), the inner and outer heat-sensing regions in each region of the pair of side edge regions may extend across the longitudinal direction of the absorber The whole area of each of the pair of side edges may be arranged, and it may be arranged in a part.

In addition, when imparting warmth to the uterus of the wearer, the inner and outer warmth-sensing regions in each region of the pair of side edge regions may be arranged, for example, in the excretory opening contact region (for example, the absorbent article is : sanitary napkins, underwear-type sanitary napkins, sanitary pads with wings, disposable diapers, etc.), front cloth (for example, when the absorbent article is disposable diapers, etc.). In addition, when imparting warmth to the wearer's prostate, the inner and outer warmth-sensing regions in each region of the pair of side edge regions can be arranged, for example, on a front cloth (for example, an absorbent article that is used immediately after use). disposable diapers, etc.).

In the absorbent article (warmth-sensing article) of the present invention (Invention C), both the inner side-edge region and the outer-side temperature-sensing region in each region of the pair of side edge regions contain a temperature-sensing solution. Contains a temperature-sensing agent that activates TRP ion channels, and a vehicle. The inner warm feeling region is mainly a region that imparts a warm feeling to the wearer, and the outer warm feeling region is mainly a region for preventing the wearer from scratching.

In each of the pair of side edge regions, the basis weight of the temperature-sensitive solution in the outer temperature-sensitive region is smaller than the basis weight of the temperature-sensitive solution in the inner temperature-sensitive region, and the temperature-sensitive solution in the outer temperature-sensitive region With respect to the basis weight of the temperature-sensing solution in the inner temperature-sensing region, the basis weight of the powder is ideally in the range of 5 to 90 mass %, more preferably in the range of 10 to 70 mass %, and most ideally in the range of 20 to 50 mass % % range. By doing so, the wearer is less likely to feel the difference in the warming effect between the inner warm feeling region and the outer warm feeling region, and the wearer is less likely to feel itching.

In the absorbent article (warmth-sensing article) of the present invention (Invention C), the base weight of the warmth-sensing agent in each of the paired side edge regions preferably contains a base weight of 0.001 to 10 g/m ² . A heavy warm feeling solution is more ideally a warm feeling solution containing a basis weight of 0.003 to 5 g/m ² , more ideally a warm feeling solution containing a basis weight of 0.01 to 2.5 g/m ² , and more ideal It is a warm solution containing a basis weight of 0.05 to 1.5 g/m ² . From the point of view of imparting warmth to the wearer.

In the present invention (Invention C), the basis weight of the temperature-sensitive solution in the inner temperature-sensitive area, the outer temperature-sensitive area, and the desired central temperature-sensitive area is measured as follows. (1) A plurality of absorbent articles are prepared, and the temperature-sensing solution in each absorbent article is cured with liquid nitrogen. (2) Using a knife or the like, from the absorbent article in which the temperature-sensing solution is cured, each region sample such as the inner temperature-sensing region, the outer-side temperature-sensing region, and the desired central temperature-sensing region is cut out with a cutter or the like to have a predetermined area in the plane direction : S ₁ (m ² ). In addition, each sample can also be cut into a liquid-impermeable sheet containing an absorber. (3) Measure the mass of each sample: m ₁ (g). (4) Wash each sample with a cleaning solvent suitable for the polarity of the warm-sensing solution (for example, toluene when the solvent of the warm-sensing solution is a lipophilic solvent; ethanol when the solvent of the warm-sensing solution is a hydrophilic solvent, etc.)

(5) Dry each sample after washing at 70° C. for 1 hour, and measure the mass after drying: m ₂ (g). (6) From the following equation bs(g/m ² )=(m ₂ −m ₁ )/S ₁ , the basis weight of the temperature-sensing solution of each sample was calculated: bs (g/m ² ). (7) Using different absorbent articles, the basis weight of the temperature-sensitive solution of each sample was measured 10 times in total, and the average value of these was used as the basis weight of the temperature-sensitive solution in each region. In addition, as long as it is the height of the basis weight of the temperature sensitive solution in the inner temperature sensitive area, the outer temperature sensitive area, and the desired central temperature sensitive area, it can be visually evaluated using an optical microscope or the like.

In the absorbent article (warmth-sensitive article) of the present invention (invention C), the inner side-temperature-sensitive area and the outer-side temperature-sensitive area in each area of the pair of side edge areas can be combined with any layer in the thickness direction of the absorbent article . For example, the inner temperature sensitive region can be arranged on a liquid permeable sheet, an absorber, an auxiliary sheet described later, and the like, and the outer temperature sensitive region can be arranged in a liquid permeable sheet, a side sheet, an auxiliary sheet described later, and the like. From the viewpoint of quickly imparting warmth to the wearer, the inner and outer warmth-sensing regions of each of the paired side edge regions are arranged in the layer that contacts the wearer, specifically, in the liquid-permeable region. Sexual flakes, side flakes, etc. are ideal. In addition, when the temperature-sensitive solution moves slightly due to pressure, vibration, etc. applied to the absorbent article, at least one of the inner temperature-sensitive area and the outer temperature-sensitive area is disposed in a single layer (eg, coating), and the Can exist across multiple layers.

The absorbent article (warmth-sensitive article) of the present invention (Invention C) may include a center temperature-sensitive area between a pair of side edge areas. It comes from the viewpoint of providing a warm feeling to the part which contact|connects an absorber of a wearer. The above-mentioned central temperature-sensing region includes a warming-sensing solution, and the warming-sensing solution includes a warming agent and a solvent. In addition, the temperature sensitive solution, the temperature sensitive agent, and the solvent are as described in the inner temperature sensitive area and the outer temperature sensitive area.

When the absorbent article (warmth-sensitive article) of the present invention (Invention C) is provided with a central temperature-sensing region, the central temperature-sensing region may be arranged inside each region of a pair of side edge regions in the longitudinal direction of the absorbent article. Between the temperature-sensing regions, considering the effect of temperature-sensing, they may be arranged longer in the longitudinal direction of the absorbent article than the inner-side-temperature-sensing regions, and, in consideration of absorbency, may be shorter than the inner-side-temperature-sensing regions. It is arrange|positioned in the longitudinal direction of an absorbent article.

Moreover, when the absorbent article (warmth-sensing article) of the present invention (Invention C) includes a central temperature-sensing region, the central temperature-sensing region may be aligned with each region of the pair of side edge regions in the width direction of the absorbent article. The inner temperature-sensing regions are separated from each other, and may be adjacent to each other, and preferably adjacent to each other. In this way, the wearer is less likely to feel the difference in the warming effect between the inner warm feeling region and the central warm feeling region, and the wearer is less likely to feel itching.

The said center temperature sensitive area|region can arrange|position arbitrary layers in the thickness direction of an absorbent article. For example, the central temperature-sensitive region may be arranged on a liquid-permeable sheet, an absorber, an auxiliary sheet to be described later, or the like. From the viewpoint of quickly imparting a warm feeling to the wearer, the central warm feeling region is a layer that is in contact with the wearer, and specifically, it is preferably disposed on the liquid-permeable sheet. In addition, when the temperature-sensitive solution is slightly moved by pressure, vibration, etc. applied to the absorbent article, even when the central temperature-sensitive region is arranged in a single layer (eg, coating), it can exist across a plurality of layers.

The basis weight of the temperature-sensitive solution in the above-mentioned central temperature-sensitive region is arbitrary in principle, and even if the basis weight of the temperature-sensitive solution in each of the inner temperature-sensitive regions of the pair of side edge regions is smaller, it may be equal. Can be much. The basis weight of the temperature sensitive solution in the above-mentioned central temperature sensitive area is preferably larger than the basis weight of the warm sensitive solution in each area of the inner warm sensitive area of the pair of side edge areas. The basis weight of the temperature sensitive solution is preferably in the range of 105 to 500 mass %, more preferably 110 to 200 mass % with respect to the basis weight of the thermal sensitive solution in each of the inner warm sensitive regions of the pair of side edge regions. range, and more ideally in the range of 120 to 150 mass %. In this way, a warm feeling can be felt at the part of the wearer's skin that is in contact with the central warm feeling area, and the wearer can be less likely to feel the difference in the warming effect between the central warm feeling area and the inner warm feeling area. , and the wearer is less likely to feel itching.

In the absorbent article (warmth-sensing article) of the present invention (Invention C), the temperature-sensing solution contains a warming-sensing agent that activates TRP ion channels, and a vehicle. As the above-mentioned warming agent and solvent, those exemplified in connection with Invention A can be mentioned.

The aforementioned warming solution preferably contains 0.0001 to 5.0 mass % of the aforementioned warming agent, more desirably 0.0005 to 3.0 mass %, still more desirably 0.1 to 1.0 mass %, and most desirably 0.3 to 0.7 mass % . From the point of view of thermosensory effect.

In the absorbent article (warm-feeling article) of the present invention (invention C), the above-mentioned warm-feeling solution may include the following in addition to the above-mentioned warm-feeling agent and solvent, as long as the effect of imparting a warm feeling to the wearer is not hindered The other components of at least one of the above.

As for the above-mentioned at least one other component, for example, what is exemplified as a cooling agent in Invention A, and what is exemplified as "at least one other component", etc. are mentioned.

The inventors of the present invention have found that when the warming solution further contains a cooling agent for activating TRP ion channels in addition to the warming agent for activating TRP ion channels, the wearer is in contact with the warming solution during the above-mentioned warming sensation time. Itching is not easily felt in the part and its surrounding area.

In the absorbent article (warm-feeling article) of the present invention (Invention C), when the temperature-sensing solution further contains a cooling-sensing agent, the cooling-sensing solution preferably contains 0.0001 to 5.0 mass % of the cooling-sensing agent, more preferably 0.0005 to 3.0 mass % The cooling agent is more preferably 0.1 to 1.0 mass % of the cooling agent, and most preferably 0.3 to 0.7 mass % of the cooling agent. This is from the viewpoint that the wearer is less likely to feel itching during the warm feeling time, and less likely to feel an excessive cooling sensation.

In the absorbent article (warm-sensing article) of the present invention (Invention C), when the warming-sensing solution further contains a cooling-sensing agent, the warming-sensing solution preferably contains the warming-sensing agent and cooling sensation in a mass ratio of 20:1 to 1:10. It is more desirable to contain the above-mentioned warming agent and cooling agent in a mass ratio of 10:1 to 1:5, and it is more desirable to contain the above-mentioned warming agent and cooling agent in a mass ratio of 2:1 to 1:1. . It is from the viewpoint that the wearer is less likely to feel itching during the warm feeling time, and is less likely to feel a cool feeling and is more likely to feel a warm feeling.

It is preferable that the absorbent article (warm-sensitive article) of the present invention (Invention C), in particular, the above-mentioned temperature-sensitive solution does not contain an exothermic agent like the warm-sensitive article of Invention A. The above-mentioned exothermic agents include those listed in Invention A. In the absorbent article (warm-feeling article) of the present invention (Invention C), the liquid-permeable sheet is not particularly limited as long as it has liquid-permeability, and those listed in Invention A are exemplified.

The absorbent article (warmth-sensitive article) of the present invention (Invention C) can have elastic strain properties like the temperature-sensitive article of Invention A. Since the method of imparting elastic strainability to the absorbent article (warm-sensitive article) of the present invention (Invention C) is the same as that described in Invention A, these are used and detailed descriptions are omitted.

In the absorbent article (warm-sensitive article) of the present invention (Invention C), the liquid-permeable sheet may contain, as in the warm-sensitive article of Invention A, an exothermic material, a heat insulating material, and a hygroscopic material, and the A material selected from a group formed by an arbitrary combination of such materials (hereafter, it may only be referred to as a "functional material"). Since the above-mentioned functional materials are the same as those listed in Invention A, descriptions thereof will be omitted.

In the absorbent article (warm-feeling article) of the present invention (Invention C), since the liquid-impermeable sheet is the same as that listed in Invention A, the description is omitted.

The absorbent article (warmth-sensitive article) of the present invention (Invention C) may include an additional member, for example, an auxiliary sheet, between the liquid-permeable sheet and the liquid-impermeable sheet. The above-mentioned auxiliary sheets are the same as those listed in Invention A, so the description is omitted.

The absorbent article (warmth-sensitive article) of the present invention (Invention C) may include an adhesive portion for fixing the absorbent article to clothing, the wearer's skin, or the like. Those listed in Invention A are the same, so the description is omitted.

The absorbent article (warmth-sensitive article) of the present invention (Invention C) is preferably packaged by a packaging sheet before use, as with the warmth-sensing article of Invention A. The packaging sheet is the same as that of Invention A. Those listed are the same, so the description is omitted.

The above-mentioned absorbent article is not particularly limited, and the same as those listed in Invention A can be mentioned, so the description is omitted.

In addition, the temperature-sensitive solution may move on or inside the material constituting the absorbent article, and a part of the material adjacent to the material in which the temperature-sensitive solution is arranged may form a temperature-sensitive area (inner temperature-sensitive area, outer temperature-sensitive area) , the desired central temperature sensing area). For example, when the auxiliary sheet is provided with the temperature-sensitive solution, when the liquid-permeable sheet is made of woven fabric, a part of the temperature-sensitive solution moves to, for example, an area on the auxiliary sheet side of the adjacent liquid-permeable sheet, and mainly moves to the absorbent article In the thickness direction of the liquid-permeable sheet, there are cases in which temperature-sensitive regions (inner temperature-sensitive regions, outer-side temperature-sensitive regions, and desired central temperature-sensitive regions) are formed in the regions on the auxiliary sheet side of the liquid-permeable sheet. When the liquid-permeable sheet is provided with the temperature-sensitive solution, a part of the temperature-sensitive solution, for example, is mainly directed toward the liquid-permeable sheet side region of the adjacent auxiliary sheet or the region of the adjacent absorber on the liquid-permeable sheet side. When the thickness direction of the absorbent article moves, the area on the liquid-permeable sheet side of the auxiliary sheet or the area on the liquid-permeable sheet side of the absorber forms a temperature-sensitive area (inner temperature-sensitive area, outer-side temperature-sensitive area, desired the central temperature sensitive area).

In the absorbent article (warm-sensing article) of the present invention (Invention C), the temperature-sensing agent for imparting warmth to the wearer spans the overlapping region that overlaps with the absorber (of the absorbent article) in the thickness direction and the absorber The wearer is less likely to feel itching when both sides of the non-overlapping regions that do not overlap in the thickness direction (of the absorbent article) are arranged. Therefore, the absorbent article (warmth-sensing article) of the present invention (invention C) can be used to impart warmth to the following parts of the wearer, and the absorbent article (warmth-sensing article) of the present invention (invention C) ), the inner temperature sensitive area, the outer temperature sensitive area, and the desired central temperature sensitive area can be arranged at positions corresponding to the following parts.

・Prostate (mainly male) By imparting warmth to the skin near the prostate and preventing poor blood circulation near the prostate, prostatic hypertrophy, prostatitis and prostate cancer can be prevented and symptoms of these can be alleviated. ・groin By imparting warmth to the skin near the groin, inguinal hernias can be prevented and these symptoms alleviated. ・Thigh artery By imparting warmth to the skin near the femoral artery, prostatic hypertrophy, prostatitis, and prostate cancer can be prevented, these symptoms can be alleviated, and cold legs can be prevented.

・Bladder, pelvic floor muscles (mainly female) By giving warmth to the muscles in the vicinity of the bladder and pelvic floor muscles, it prevents the body from getting cold, and makes it difficult to leak urine. [Example]

Hereinafter, the present invention will be described by way of examples, but the present invention is not limited to these. <Invention A> [Production Example A1] The sanitary napkin No. A1 according to the first embodiment was produced as a temperature-sensitive article. The liquid-permeable sheet in the absorption body and the heat-sensing body is a hot air non-woven fabric (basic weight: 30g/m ² ), the auxiliary sheet is made of air-forming pulp (basic weight: 60g/m ² ), and the warm-sensing solution is warm-sensing The basis weight of the agent was applied in such an amount as to be 1.0 g/m ² . In addition, the warming solution is composed of vanillyl butyl ether (10.0% by mass) as a warming agent, 1-menthyl glyceryl ether (10.0% by mass) as a cooling agent, and isononanoic acid as a solvent Made of nonyl esters. The liquid-impermeable sheet was a polyethylene film (basis weight: 24 g/m ² ).

[Manufacture Example A2] As a temperature-sensitive article, the temperature-sensitive sheet No. A1 according to the fourth embodiment was manufactured. The liquid-permeable sheet is a hot air non-woven fabric (basic weight: 30 g/m ² ), the auxiliary sheet is made of air-forming pulp (basic weight: 100 g/m ² ), and the basis weight of the warming solution is 1.0 g/m of the warming agent. An amount of m ² is applied. In addition, the warming solution is composed of vanillyl butyl ether (0.3 mass %) as a warming agent, l-menthyl glyceryl ether (0.3 mass %) as a cooling agent, surfactant (1.2 mass %), and water as a solvent. The liquid-impermeable sheet was a polyethylene film (basis weight: 24 g/m ² ).

[Production Example A3] The warming solution contains vanillyl butyl ether (10.0% by mass) as a warming agent, except that it does not contain l-menthyl glyceryl ether as a cooling agent, in the same manner as in Production Example A1, to produce sanitary napkin No. A2. [Production Example A4] The warm feeling solution contained vanillyl butyl ether (0.3% by mass) as a warming agent, and except that l-menthyl glyceryl ether as a cooling agent was not included, a warm sheet No. A2 was produced in the same manner as in Production Example A2. .

[Examples A1 and A2, and Comparative Examples A1 and A2] When the sanitary napkins No.A1 and No.A2 were put on each of a plurality of subjects, it was less difficult to obtain the sanitary napkin No.A1 than the sanitary napkin No.A2 until the lower abdomen felt warm. A scratchy answer. Moreover, even after the sanitary napkin No. A1 started to feel warm, it was not easy to feel itching. Moreover, when each of a plurality of subjects was put on the lower abdomen and shoulders with the temperature-sensitive sheets No.A1 and No.A2, the temperature-sensitive sheet No.A1 was obtained as compared with the warm-sensitive sheet No.A2 until they felt warm. The answer is that it is not easy to feel itching in the lower abdomen and shoulders. Moreover, even after the warm sheet No. A1 was obtained, it was difficult to feel itching.

<Invention B> [Manufacturing example B1] The sanitary napkin No. B1 according to the first embodiment was manufactured as a temperature-sensitive article. The liquid-permeable sheet in the absorbing body and the temperature-sensing body is a hot air non-woven fabric (basic weight: 30g/m ² ), the auxiliary sheet is made of air-forming pulp (basic weight: 60g/m ² ), and the temperature-sensing solution is coated on The entire surface of the sheet is kept warm, and the entire sheet is assisted to form a temperature-sensitive area. In addition, in the temperature-sensing application portion, the warming-sensing solution was placed in such an amount that the basis weight of the warming agent was 1.0 g/m ² , and in the warming-sensing peripheral portion, the warming solution was arranged so that the basis weight of the warming agent was 0.7 g/m 2 . Such an amount as m ² is configured. In addition, the warming solution is composed of vanillyl butyl ether (10.0 mass %) as a warming agent and isononyl isononanoate as a solvent. The liquid-impermeable sheet was a polyethylene film (basis weight: 24 g/m ² ).

[Manufacture Example B2] As a temperature-sensitive article, the temperature-sensitive sheet No. B1 according to the fourth embodiment was manufactured. The liquid-permeable sheet is a hot air non-woven fabric (basic weight: 30 g/m ² ), the auxiliary sheet is made of air-forming pulp (basic weight: 100 g/m ² ), and the temperature-sensing solution is coated on the entire surface of the temperature-sensing maintaining sheet to assist The sheet as a whole forms a temperature sensitive area. In addition, in the temperature-sensing application portion, the warming-sensing solution was placed in such an amount that the basis weight of the warming agent was 1.0 g/m ² , and in the warming-sensing peripheral portion, the warming solution was arranged so that the basis weight of the warming agent was 0.7 g/m 2 . Such an amount as m ² is configured. In addition, the warming solution was composed of vanillyl butyl ether (0.3 mass %) as a warming agent, a surfactant (1.2 mass %), and water as a solvent. The liquid-impermeable sheet was a polyethylene film (basis weight: 24 g/m ² ).

[Production Example B3] Sanitary napkin No. B2 was produced in the same manner as in Production Example B1, except that the temperature-sensing solution was applied to the entire surface of the warmth-retaining sheet in such an amount that the basis weight of the warming agent was 1.0 g/m ² . . [Manufacture Example B4] A temperature-sensitive sheet No. B2 was manufactured in the same manner as in Manufacturing Example B2, except that the temperature-sensitive solution was applied to the entire surface of the temperature-sensitive maintaining sheet in such an amount that the basis weight of the temperature-sensing agent was 1.0 g/m ² .

[Examples B1 and B2, and Comparative Examples B1 and B2] When the sanitary napkins No.B1 and No.B2 were put on each of a plurality of subjects, it was less difficult to obtain the sanitary napkin No.B1 than the sanitary napkin No.B2 until the lower abdomen felt warm. A scratchy answer. Moreover, even after the sanitary napkin No. B1 began to feel warm, it was found that it was not easy to feel itching. Moreover, when each of a plurality of subjects was put on the lower abdomen and shoulders with the temperature-sensitive sheets No. B1 and No. B2, the temperature-sensitive sheet No. B1 was obtained while the temperature-sensitive sheet No. B2 felt warmer. The answer is that it is not easy to feel itching in the lower abdomen and shoulders. Moreover, even after the warm feeling sheet No. B1 was obtained, it was difficult to feel itching.

<Invention C> [Production Example C1] The sanitary napkin No. C1 according to the first embodiment was produced. The liquid-permeable sheet is a hot-air nonwoven fabric (basic weight: 30 g/m ² ), and the absorber is a core cladding layer composed of tissue paper covered with pulp (basic weight: 200 g/m ² ), and a polymer absorbent ( Basis weight: 20 g/m ² ) constituted the absorbent core, and the liquid-impermeable sheet was a polyethylene film (basic weight: 24 g/m ² ).

In addition, the inner temperature-sensitive area, the outer temperature-sensitive area, and the central temperature-sensitive area are arranged on the liquid-permeable sheet, and in the inner temperature-sensitive area, the temperature-sensitive solution is applied in such an amount that the basis weight of the temperature-sensing agent becomes 1.0 g/m ² . Arranged on the liquid-permeable sheet. In addition, the warming solution is composed of vanillyl butyl ether (10.0 mass %) as a warming agent and isononyl isononanoate as a solvent. Moreover, in the outer side temperature sensitive area, the said temperature sensitive solution was apply|coated so that the basis weight of the temperature sensitive solution might become 30 mass % of the basis weight of the temperature sensitive solution of the inner side temperature sensitive area. In the central temperature-sensitive area, the above-mentioned temperature-sensitive solution was applied so that the basis weight of the temperature-sensitive solution became 120% by mass of the basis weight of the temperature-sensitive solution in the inner temperature-sensitive area.

[Production Example C2] Sanitary napkin No. C2 was produced in the same manner as in Production Example C1 except that the central temperature-sensitive region was not formed.

[Production Example C3] Sanitary napkin No. C3 was produced in the same manner as in Production Example C1, except that the temperature-sensitive solution in the outer temperature-sensitive region was arranged so that the basis weight of the temperature-sensitive solution and the basis weight of the inner temperature-sensitive region were the same. [Production Example C4] Sanitary napkin No. C4 was produced in the same manner as in Production Example C2, except that the temperature-sensitive solution in the outer temperature-sensitive region was arranged so that the basis weight of the temperature-sensitive solution and the basis weight of the inner temperature-sensitive region were the same.

[Examples C1 and C2, and Comparative Examples C1 and C2] The sanitary napkins No. C1 to No. C4 were put on each of the plurality of subjects, and the warm feeling effect within 2 hours after wearing was evaluated by the five-stage evaluation value (1: no warm feeling effect was felt; 2 : very weak warming effect; 3: weak warming effect; 4: moderate warming effect; 5: strong warming effect), and evaluated by the following 5-stage evaluation values of 1 to 5 The degree of itching is not easily felt within 2 hours after application. The results are shown in Table 1 (the average value was rounded to an integer). 5: No difference in the warming effect was felt in each area, and no itchiness was felt. 4: A slight difference in the warming effect was not felt in each area, and the itching was hardly felt. 3: A slight difference in the warming effect is felt in each area, and a little itching is felt. 2: A difference in the warming effect was felt in each area, and a tolerable degree of itching was felt. 1: A difference in the warming effect was felt in each area, and an unbearable degree of itching was felt.

Table 1

1‧‧‧Sanitary napkins 3‧‧‧Absorptive body 5‧‧‧Temperature body 7‧‧‧Liquid permeable sheet 9‧‧‧Liquid impermeable sheet 11‧‧‧Absorptive body 13‧‧‧Auxiliary sheet 15‧‧‧Shape retaining member 17‧‧‧Repeat part 23‧‧‧Wing part 25‧‧‧Sealing part 27‧‧‧Embossed part 29‧‧‧Packaging sheet 31‧‧‧Temperature sensitive area 401‧‧‧Physical Sanitary napkin 403‧‧‧Absorbent body 405‧‧‧Warm body 407‧‧‧Liquid permeable sheet 409‧‧‧Liquid impermeable sheet 411‧‧‧Absorptive body 413‧‧‧Auxiliary sheet 415‧‧‧Shape Holding member 417‧‧‧Repeat part 431‧‧‧Warm-sensing area 433‧‧‧Warm-sensing application part 435‧‧‧Warm-sensing peripheral part 437‧‧‧Embossed part 439‧‧‧Outer edge 801‧‧‧Physiological use Sanitary napkin 803‧‧‧Liquid-permeable sheet 805‧‧‧Liquid-impermeable sheet 807‧‧‧Absorber 809, 810‧‧‧Side edge 811‧‧‧Repeat area 813‧‧‧Non-repeating area 815, 816‧ ‧‧Side edge area 817‧‧‧Wearing clothing 819, 820‧‧‧Inner temperature sensitive area 821, 822‧‧‧Outer temperature sensitive area 823‧‧‧Central temperature sensitive area L‧‧‧long-side direction W‧‧‧ Width direction T‧‧‧Thickness direction F ₁ ‧‧‧First folding axis in longitudinal direction F ₂ ‧‧‧Second folding axis in longitudinal direction F ₃ ‧‧‧First folding axis in width direction F ₄ ‧‧‧ The 2nd folding axis in the width direction F ₅ ‧‧‧The 3rd folding axis in the width direction F ₆ ‧‧‧The folding axis C‧‧‧Center C ₁ ~C ₄ ‧‧‧Concentric circles

FIG. 1 is a plan view of the sanitary napkin 1 according to the first embodiment of the invention A. As shown in FIG. FIG. 2 is an exploded perspective view of the sanitary napkin 1 according to the first embodiment of the invention A. FIG. FIG. 3 is a diagram showing a state in which the sanitary napkin 1 according to the first embodiment of the invention A is installed. FIG. 4 is a diagram for explaining the underwear-type sanitary napkin 101 according to the second embodiment of the invention A. FIG. FIG. 5 is a diagram illustrating the disposable diaper 201 according to the third embodiment of the invention A. FIG. 6 is a perspective view of an individual package 303 of the temperature-sensitive sheet 301 individually packaged according to the fourth embodiment of the invention A. FIG. FIG. 7 is a perspective view of a temperature-sensitive sheet 301 according to a fourth embodiment of Invention A. FIG. 8 is an exploded perspective view of a temperature-sensitive sheet 301 according to a fourth embodiment of Invention A. FIG. FIG. 9 is a view showing a mounted state of the temperature-sensitive sheet 301 according to the fourth embodiment of the invention A. FIG. 10 is a perspective view of a sanitary napkin 401 according to the first embodiment of Invention B. FIG. FIG. 11 is an exploded perspective view of the sanitary napkin 401 according to the first embodiment of Invention B. FIG. FIG. 12 is a plan view of the auxiliary sheet 413 . FIG. 13 is a cross-sectional view of the auxiliary sheet 413 in the XIII-XIII cross section of FIG. 12 . FIG. 14 is a view showing a state in which the sanitary napkin 401 according to the first embodiment of the invention B is installed. FIG. 15 is a diagram for explaining the underwear-type sanitary napkin 501 according to the second embodiment of the invention B. FIG. FIG. 16 is a diagram illustrating the disposable diaper 601 according to the third embodiment of the invention B. FIG. 17 is a perspective view of an individual package body 703 of the temperature-sensitive sheet 701 packaged individually according to the fourth embodiment of Invention B. FIG. 18 is a perspective view of a temperature-sensitive sheet 701 according to the fourth embodiment of Invention B. FIG. 19 is an exploded perspective view of a temperature-sensitive sheet 701 according to a fourth embodiment of Invention B. FIG. FIG. 20 is a plan view of the auxiliary sheet 709 . FIG. 21 is a view showing a mounted state of the temperature-sensitive sheet 701 according to the fourth embodiment of the invention B. FIG. FIG. 22 is a plan view of the sanitary napkin 801 according to the first embodiment of Invention C. FIG. FIG. 23 is an exploded perspective view of the sanitary napkin 801 . FIG. 24 is a diagram for explaining the inner temperature sensitive area 819 and the inner temperature sensitive area 820 , the outer temperature sensitive area 821 , the outer temperature sensitive area 822 , and the central temperature sensitive area 823 of the sanitary napkin 801 . FIG. 25 is a view showing a state in which the sanitary napkin 801 is attached. FIG. 26 is a diagram for explaining the underwear-type sanitary napkin 901 according to the second embodiment of the invention C. FIG. FIG. 27 is a diagram for explaining the disposable diaper 1001 according to the third embodiment of Invention C. FIG.

1‧‧‧Sanitary napkins

3‧‧‧Absorptive body

5‧‧‧Warm body

11‧‧‧Absorber

13‧‧‧Auxiliary sheet

15‧‧‧Shape retaining member

17‧‧‧Repetition

23‧‧‧Wings

25‧‧‧Sealing

27‧‧‧Embossed Section

29‧‧‧Packaging sheet

31‧‧‧Warm zone

F ₁ ‧‧‧The first folding axis in the longitudinal direction

F ₂ ‧‧‧The second folding axis in the longitudinal direction

F ₃ ‧‧‧The first folding axis in the width direction

F ₄ ‧‧‧The second folding axis in the width direction

F ₅ ‧‧‧The third folding axis in the width direction

L‧‧‧long side direction

W‧‧‧Wide side direction

Claims (15)

An absorbent article is an absorbent article comprising a liquid-permeable sheet, a liquid-impermeable sheet, and an absorber therebetween, wherein the absorbent article has a temperature-sensitive region containing a temperature-sensitive solution, the The warm-sensing solution contains a warming-sensing agent that activates TRP ion channels, a cooling-sensing agent that activates TRP ion channels, and a vehicle. The absorbent article according to claim 1, wherein the warming solution contains the warming agent and the cooling agent in a mass ratio of 20:1 to 1:10. A warm-sensitive article is a warm-sensitive article with a liquid-permeable sheet and a liquid-impermeable sheet, characterized in that: the warm-sensitive article has a warm-sensitive area containing a warm-sensitive solution, and the warm-sensitive solution contains a TRP ion channel The activated temperature-sensing agent and solvent, the temperature-sensing region is divided into: a temperature-sensing application part containing the temperature-sensing solution, and a temperature-sensing application part arranged around the temperature-sensing application part, and containing more than the temperature-sensing application part. The temperature-sensing peripheral portion of the temperature-sensing solution having a small basis weight. The temperature-sensing article according to claim 3, wherein the temperature-sensing region is composed of a fabric, and the fiber density of the fabric in the temperature-sensing application portion is higher than that of the fabric in the temperature-sensing peripheral portion. The temperature-sensing article according to claim 3 or 4, wherein the temperature-sensing region includes a plurality of embossed portions in the temperature-sensing application portion and the temperature-sensing peripheral portion, respectively, and the The embossing strength of each of the plurality of embossed portions is higher than that of each of the plurality of embossed portions in the temperature-sensing peripheral portion, or the number density of the plurality of embossed portions in the temperature-sensing applicable portion The number density of the plurality of embossed portions in the heat-sensing peripheral portion is higher than that of the plurality of embossed portions in the heat-sensing peripheral portion, or the area ratio of the plurality of embossed portions in the heat-sensing application portion is higher than that of the plurality of embossed portions in the heat-sensing peripheral portion. The area ratio of the embossed portion is higher. The temperature-sensitive article according to claim 3 or claim 4, wherein the temperature-sensitive article is an absorbent article having a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, and further comprising the liquid In the absorber between the permeable sheet and the liquid-impermeable sheet, the temperature-sensitive region is arranged at a position that does not overlap with the absorber in the thickness direction. The temperature-sensing article according to claim 6, wherein the temperature-sensing region is arranged at a position corresponding to the wearer's lower abdomen and is wider in the width direction than the absorber. The temperature-sensing article according to claim 7, wherein the temperature-sensing article is folded in the longitudinal direction along the widthwise fold axis extending in the widthwise direction, and the widthwise fold axis is folded in the temperature-sensing The unfolded state of the article is arranged to overlap with the temperature sensitive region in the thickness direction. The temperature-sensitive article according to claim 7, wherein the temperature-sensitive article is folded in the width direction of the pair of longitudinal fold axes extending in the longitudinal direction, and the pair of longitudinal folds are folded in the width direction. In the unfolded state of the temperature-sensing article, the folding axis is arranged on the outer side in the width direction of the absorber and overlaps with the temperature-sensing region in the thickness direction. An absorbent article having a longitudinal direction, a lateral direction, and a thickness direction, and comprising: a liquid-permeable sheet, a liquid-impermeable sheet, and a liquid-permeable sheet, a liquid-impermeable sheet, and a An absorbent article of a pair of side edge absorbers, characterized in that the absorbent article is divided into overlapping regions that overlap with the absorber in the thickness direction, and areas that do not overlap the absorber in the thickness direction. The non-overlapping region, the absorbent article includes a pair of side edge regions, and in the thickness direction, the pair of side edge regions respectively include each side edge of the pair of side edges of the absorbent body, and in the above-mentioned one For each side edge region of the pair of side edge regions, there are (i) an inner temperature-sensing region arranged in the overlapping region and an outer temperature-sensing region arranged in the non-overlapping region, (ii) the inner temperature-sensing region and the Both sides of the outer temperature-sensing region contain a temperature-sensing solution containing a temperature-sensing agent for activating TRP ion channels, and a solution, (iii) The basis weight of the temperature-sensitive solution in the outer temperature-sensitive region is smaller than the basis weight of the temperature-sensitive solution in the inner temperature-sensitive region. The absorbent article according to claim 10, wherein in each region of the pair of side edge regions, the inner heat-sensitive region and the outer heat-sensitive region sandwich each side edge of the pair of side edges adjacent in between. The absorbent article according to claim 10 or claim 11, wherein in each region of the pair of side edge regions, the inner temperature-sensitive region and the outer temperature-sensitive region are arranged on the liquid-permeable sheet . The absorbent article according to claim 10 or claim 11, wherein the absorbent article includes a central temperature-sensitive area between the pair of side edge areas, and the central temperature-sensitive area contains the temperature-sensitive solution, The basis weight of the temperature-sensitive solution in the central temperature-sensitive region is larger than the basis weight of the temperature-sensitive solution in each region of the inner temperature-sensitive region of the pair of side edge regions. The absorbent article according to claim 13, wherein the center temperature-sensing region is adjacent to the inner heat-sensing region of each region of the pair of side edge regions. According to the absorbent article described in item 13 of the scope of the application, wherein the preceding The central temperature-sensitive region is arranged on the liquid-permeable sheet or an auxiliary sheet arranged between the liquid-permeable sheet and the absorber.

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