TW201936147A - Absorbent article, thermal comfort member for absorbent article, and use of thermal comfort member by affixation to absorbent article - Google Patents

Abstract

The purpose of the present disclosure is to provide an absorbent article that resists movement of a thermal comfort solution when not worn and easily imparts thermal comfort when worn. This absorbent article has the following configuration. An absorbent article (1) having a waist region (WR) that is capable of extending in a waist direction (Wa), the absorbent article (1) being equipped with an absorbent body (5) and a thermal comfort member (7) for imparting thermal comfort to a wearer, and the thermal comfort member (7) being disposed in the waist region (WR) that is capable of extending in the waist direction (Wa), wherein the absorbent article (1) is characterized in that: the thermal comfort member (7) is equipped with a thermal-comfort-imparting layer (101), a liquid-impermeable layer (131), and a thermal comfort solution holding layer (121) that contains a thermal comfort solution; the thermal comfort solution includes a thermal comfort agent that activates TRP channels, and a solvent; and the thermal-comfort-imparting layer (101) is equipped with a plurality of openings (107) that are capable of releasing the thermal comfort solution when the waist region (WR) is extended in the waist direction (Wa).

Description

Absorbent articles, temperature-sensitive members for absorbent articles, and temperature-sensitive members are attached to the use of absorbent articles

The present disclosure relates to an absorbent article, a temperature sensitive member that is applied to a surrounding area of the absorbent article and imparts a warm feeling to the wearer, and a temperature sensitive member that imparts a warm feeling to the wearer. Use of sexual goods.

It is known to impart a warmth to the wearer's warmth. In particular, in the warm-sensing article which imparts a warm feeling, it is preferable to contain the skin which acts on the wearer and enhance the wearer's skin from the viewpoint of preventing the low-temperature burn. The way the temperature comes to act.

Patent Document 1 describes an absorbent article for the purpose of improving comfort, and which contains an agent capable of transmitting a feeling to a wearer without having to create an external condition felt by the wearer, preferably a hygienic type. Disposable absorbent articles after use.
Further, in paragraph [0040] of Patent Document 1, it is described that a preferable agent may be a warming agent which can stimulate the temperature sensor without creating a temperature change of the article on the wearer's body surface. (ie warm) content.

Further, in paragraph [0109] of Patent Document 1, "agent, which is typically a carrier for a cooling agent, may be mentioned, and examples thereof include an emulsion, a cream, an oil, an ointment, a powder, an emulsion, a foam or a gel. The composition of the form. Typical carrier for the cooling agent-like agent includes an aqueous solution or an alcohol solution, a hydrocarbon oil, a fatty acid ester, a long-chain alcohol, and an oil such as eucalyptus oil, a lipid, a starch or a talc. The content of the ultrafine particle solid.
[Previous Technical Literature]
[Patent Literature]

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

[The problem that the invention wants to solve]

In the absorbent article described in Patent Document 1, when the warming agent is used together with the carrier, the warming agent and the carrier are transferred from the placed place to the absorber during storage of the absorbent article, and sometimes The absorbency of the absorber is lowered.
Accordingly, an object of the present invention is to provide an absorbent article which is less likely to move the temperature sensitive solution when it is not worn, and which is easy to impart a warm feeling when worn.

[Technical means to solve the problem]

The present inventors have discovered an absorbent article having an armrest region that is extensible in the direction of the circumference, and includes: an absorbent body, and the above-mentioned weir area that is stretchable in the direction of the circumference and An absorbent article that imparts a warm feeling to a temperature sensitive member of a wearer, wherein the temperature sensitive member includes a temperature-sensing layer and a liquid-impermeable layer, and is disposed between the temperature-sensitive layer and contains a warm feeling a temperature-sensing solution holding layer of the solution; the temperature-sensing solution comprising: a temperature-sensing agent for activating the TRP channel; and a solvent; wherein the temperature-sensing layer is provided to: when the surrounding area is elongated in the direction of the circumference A plurality of openings of the above temperature sensitive solution can be released.

[Effects of the Invention]

The absorbent article of the present invention is difficult to move the warm feeling solution when it is not worn, and is easy to impart a warm feeling when worn.

In particular, the present disclosure relates to the following aspects.
[Pattern 1]
An absorbent article having a rim region that is extensible in a direction of the rim, and includes: an absorbing body; and the rim region that is stretchable in the slanting direction and imparts a warm feeling to the wearer An absorbent article of a temperature-sensitive member characterized by:
The temperature sensitive member includes: a temperature-sensing layer, a liquid-impermeable layer, and a temperature-sensitive solution holding layer disposed between the temperature-sensitive solution;
The above temperature sensitive solution comprises: a temperature sensitive agent for activating a TRP channel, and a solvent;
The temperature-sensing layer includes a plurality of opening portions for releasing the temperature-sensitive solution when the surrounding region is elongated in the circumferential direction.

In the above absorbent article, the temperature-sensitive solution holding layer that holds the temperature-sensitive solution is disposed between the temperature-sensing layer and the liquid-impermeable layer, and the temperature-sensing layer is provided so that the surrounding area of the absorbent article is When the stretching direction is in the direction of the circumference, a plurality of opening portions of the temperature sensitive solution can be released. Therefore, when the absorbent article is not worn (before wearing), it is difficult to move or volatilize the temperature sensitive solution from the temperature sensitive member. When the sexual article is worn, when the surrounding area and the temperature sensitive member are elongated in the direction of the circumference, the warm feeling imparting layer can release the warm feeling solution and impart a warm feeling to the wearer.

[Pattern 2]
The absorbent article according to aspect 1, wherein the temperature-sensing layer is composed of a liquid-impermeable film, and each of the plurality of opening portions extends in a direction crossing the direction of the weir.

In the absorbent article, the temperature-sensing layer is composed of a liquid-impermeable film, and each of the plurality of opening portions extends in a direction intersecting the crotch direction, so that it is difficult to be used when the absorbent article is not worn. The temperature sensitive solution is moved or volatilized from the temperature sensing member. Further, when the absorbent article is worn, when the surrounding area and the temperature sensitive member are elongated in the direction of the circumference, each of the plurality of opening portions expands in the direction of the circumference, and the temperature is maintained by the temperature sensitive solution holding layer. The sensible solution is moved to the wearer through the expanded plurality of openings, and the warmth is imparted to the wearer.

[Pattern 3]
The absorbent article according to aspect 2, wherein the temperature-sensing layer has a skin side surface and a non-skin side surface facing the skin side surface, and each of the plurality of opening portions in the thickness direction of the temperature sensing member It is arranged so as not to reach the non-skin side from the side of the skin, or to the side of the skin from the non-skin side.

In the above absorbent article, each of the plurality of perforating portions is disposed such that the side of the skin does not reach the non-skin side as a starting point, or the non-skin side is not used to reach the side of the skin. Therefore, when the absorbent article is not worn, it is difficult to move or volatilize the temperature sensitive solution from the temperature sensitive member.

[Pattern 4]
The absorbent article according to aspect 3, wherein each of the plurality of the opening portions is a non-penetrating slit portion, and the plurality of the opening portions are two opening portions adjacent to each other in the surrounding direction The method of partially repeating in the above-mentioned circumferential direction is intermittently arranged in the above-mentioned circumferential direction.

In the absorbent article, the plurality of openings formed by the non-penetrating slit portions are intermittently arranged in the circumferential direction such that the two adjacent opening portions are partially overlapped in the front circumferential direction. Therefore, when the absorbent article is not worn, it is difficult to hold the temperature sensitive solution from the temperature-sensing layer to the outside of the temperature-sensitive member, or to evaporate, and the temperature is felt when the absorbent article is worn. The layer itself is easily elongated in the direction of the circumference, and the temperature-sensitive solution held by the temperature-sensitive solution holding layer is moved to the wearer through the plurality of opening portions of the temperature-sensing layer, and the temperature is imparted to the wearer. .

[Pattern 5]
The absorbent article according to any one of the above aspects, wherein the temperature-sensitive solution holding layer is composed of a fabric and has a plurality of through slit portions extending in a direction crossing the direction of the weir.

In the absorbent article, the temperature-sensitive solution holding layer is composed of a fabric and has a plurality of through-slit portions extending in a direction intersecting the crotch direction. Therefore, when the absorbent article is worn, the temperature-sensitive member is When the yarn is stretched in the weir direction, the temperature sensitive solution holding layer itself is not easily thinned by the deformation of the plurality of through slit portions, so that the temperature sensitive solution held in the temperature sensitive solution holding layer can be prevented from being excessively exposed in the initial stage of wearing the absorbent article. The ground applies to the wearer's situation. Further, even if the temperature-sensitive solution holding layer is composed of a cloth having no stretchability, since the temperature-sensitive solution holding layer and the temperature-sensitive member easily follow the elongation of the absorbent article in the direction of the weft, when the absorbent article is worn, The wearer does not feel stiff.

[Figure 6]
The absorbent article according to aspect 5, wherein the plurality of through slit portions are intermittently arranged in the circumferential direction such that two adjacent through slit portions are partially overlapped in the surrounding direction. on.

In the absorbent article, the plurality of through slit portions are intermittently arranged in the surrounding direction so that the two adjacent through slit portions are partially overlapped in the surrounding direction, so that the absorbent article is worn. The temperature-sensing layer is easily elongated in the direction of the weave, and the wearer does not easily feel a feeling of stiffness when wearing the absorbent article.

[Skin 7]
The absorbent article according to any one of the above aspects, wherein the liquid non-penetrating layer is a stretchable film which is extensible in the direction of the weir.

In the above absorbent article, since the liquid non-penetrating layer is a stretchable film that can be stretched in the direction of the weft, the liquid non-penetrating layer and the temperature sensitive member are easily followed by the absorbent article when the absorbent article is worn. The elongation of the surrounding area.

[Figure 8]
The absorbent article according to any one of the above aspects, wherein the thickness retention ratio of the thickness of the temperature-sensitive solution-holding layer at a load of 30 g/cm ² to the thickness at a load of 3 g/cm ² is a thickness retention ratio. 70% or less.

In the above absorbent article, since the thickness retention ratio is within a predetermined range, when body pressure or the like is applied to the temperature sensitive member, the temperature sensitive solution retaining layer is easily broken, and the temperature sensitive solution can maintain the temperature sensitive solution maintained by the layer, via the temperature. The plurality of openings provided in the layer are easily moved to the skin of the wearer.

[Figure 9]
The absorbent article according to any one of aspects 1 to 8, wherein the warming agent is an agonist relative to a TRPV1 receptor.

In the above absorbent article, since the warming agent is an agonist with respect to the TRPV1 receptor, when the absorbent article is worn, the wearer can feel a temperature exceeding 43 ° C of the activation temperature threshold of the TRPV1 sensor. As a result, the wearer can feel a sufficient warm feeling in the above absorbent article.

[Figure 10]
The absorbent article according to any one of aspects 1 to 9, wherein the solvent is a lipophilic solvent.

In the above absorbent article, since the solvent constituting the temperature sensitive solution is a lipophilic solvent, the temperature sensitive member itself can suppress volatilization of the lipophilic solvent, so that the packaging of the absorbent article, for example, a single package can be simplified.

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

Since the absorbent article does not contain a heat generating agent, even if the absorbent article is used for a long period of time, it is difficult to cause low temperature burns to the wearer.

[Figure 12]
The absorbent article according to any one of the above aspects, wherein the absorbent article is selected from the group consisting of a pants-type sanitary napkin and a disposable diaper.

Since the absorbent article is selected from the group consisting of a pants-type sanitary napkin and a disposable diaper, it can exhibit absorption performance and impart warmth to the wearer.

[Figure 13]
A temperature-sensitive member that is applied to an absorbent article and imparts a warm feeling to the wearer's temperature-sensing member, which is characterized by:
The temperature sensitive member includes a temperature-sensing layer and a liquid-impermeable layer, and a temperature-sensitive solution holding layer containing a temperature-sensitive solution disposed therebetween, and being fixed to the liquid-impermeable layer and Providing the temperature sensitive member to the adhesive portion of the absorbent article;
The above temperature sensitive solution comprises: a temperature sensitive agent for activating a TRP channel, and a solvent;
The temperature-sensing layer includes a plurality of openings that release the temperature-sensitive solution when elongated in a predetermined direction.

When the temperature sensitive member is used in contact with an absorbent article, the temperature-sensitive solution holding layer that holds the temperature-sensitive solution is disposed between the temperature-sensing layer and the liquid-impermeable layer, and the temperature-sensing layer is provided. A plurality of openings of the temperature sensitive solution are released when elongated in a predetermined direction. Therefore, when the temperature sensitive member is used in contact with the absorbent article, it is difficult to move or volatilize the temperature sensitive solution from the temperature sensitive member when the absorbent article is not worn, and the absorbent article is worn. At the time, when the absorbent article and the temperature-sensitive member are elongated in a predetermined direction, the warm-sensing layer releases a warm feeling solution to impart a warm feeling to the wearer.

[Figure 14]
The temperature-sensing member according to the aspect 13, wherein the temperature-sensing member has a surrounding area that is stretchable in the direction of the circumference, and is used in contact with the surrounding area of the absorbent article having the absorbent body. The direction is the above-mentioned direction.

The temperature sensing member is attached to the surrounding area of the absorbent article such that the plurality of opening portions of the temperature-sensing layer release the temperature-sensitive solution when the temperature-sensitive member is elongated in the circumferential direction. . Therefore, when the temperature sensitive member is applied to the surrounding area of the absorbent article, it is difficult to move or volatilize the temperature sensitive solution from the temperature sensitive member when the absorbent article is not worn, and on the other hand, absorb When the sexual article is worn, when the absorbent article and the temperature-sensitive member are stretched in the direction around the absorbent article, the warm-sensing layer easily releases the warm-sensing solution, and the temperature is easily imparted to the wearer.

[Figure 15]
A temperature sensitive member is applied to an absorbent article, which imparts a warmth to the wearer, and is characterized by:
The temperature sensitive member includes a temperature-sensing layer and a liquid-impermeable layer, and a temperature-sensitive solution holding layer containing a temperature-sensitive solution disposed therebetween, and being fixed to the liquid-impermeable layer and Providing the temperature sensitive member to the adhesive portion of the absorbent article;
The above temperature sensitive solution comprises: a temperature sensitive agent for activating a TRP channel, and a solvent;
The temperature-sensing layer includes a plurality of openings that release the temperature-sensitive solution when elongated in a predetermined direction.

In the temperature sensitive member, the temperature sensitive solution holding layer that holds the temperature sensitive solution is disposed between the temperature sensing layer and the liquid non-penetrating layer, and the temperature sensing layer has a temperature sensation when extended in a predetermined direction. a plurality of openings in the solution. Therefore, in the above-described use, the temperature sensitive member used in contact with the absorbent article does not easily move or volatilize the temperature sensitive solution from the temperature sensitive member when the absorbent article is not worn, and on the other hand, absorbs. When the article is worn, when the absorbent article and the temperature-sensitive member are elongated in a predetermined direction, the warm-sensing layer releases a warm feeling solution to impart a warm feeling to the wearer.

Hereinafter, the absorbent article of the present invention, the temperature-sensitive member used for adhering to the absorbent article, and the use of the temperature-sensitive member to the absorbent article will be described in detail.

<Absorbables>
1 to 7 are views for explaining the pants-type sanitary napkin 1 as an absorbent article according to an embodiment (hereinafter referred to as "the first embodiment") of the present disclosure. In the following, the "pants-type sanitary napkin" which is an absorbent article according to the first embodiment will be referred to as "pants-type sanitary napkin according to the first embodiment".

Specifically, Fig. 1 is a front view of the pants-type sanitary napkin 1 according to the first embodiment. Fig. 2 is a development view of a pants-type sanitary napkin 1 according to the first embodiment. Fig. 3 is a plan view of the temperature sensing member 7. Fig. 4 is an exploded perspective view of the temperature sensing member 7. Fig. 5 is a partial end view of the V-V end face of Fig. 4. Fig. 6 is a view for explaining a plurality of slit portions 107 when the temperature sensing member 7 is extended in the winding direction Wa. Fig. 7 is a view showing the wearing state of the pants-type sanitary napkin 1.

The pants-type sanitary napkin 1 according to the first embodiment has a height direction Lo, a circumference direction Wa, and a thickness direction T which are orthogonal to each other. In the pants-type sanitary napkin 1 , the height direction Lo means a direction orthogonal to the circumference direction Wa. In addition, the pants-type sanitary napkin 1 is composed of a pants-type sanitary napkin body 3 including the absorbent body 5, and a temperature-sensitive member 7 disposed on the pants-type sanitary napkin body 3. The wearer member 7 is placed on the pants-type sanitary napkin body 3 so as to be placed at a position corresponding to the lower abdomen of the wearer when the wearer wears the pants-type sanitary napkin 1 .

The pants-type sanitary napkin body 3 (pants-type sanitary napkin 1) is divided into a front circumference area WR _F , an inter-strand area C, and a rear circumference area WR _R along the height direction Lo. The absorber 5 is disposed so as to cover the front sill region WR _{F of the} pants-type sanitary tampon main body 3, the inter-strand region C, and the rear rim region WR _R , and the temperature-sensitive member 7 is disposed in the front sill region WR _F .

The front sill region WR _F of the pants-type sanitary tampon main body 3 includes a non-woven fabric 11 that is disposed on the side of the front side that is close to the wearer and a non-woven fabric 13 that is disposed on the side that is away from the wearer (specifically, spunbonding) The non-woven fabric constitutes the front side laminated sheet, and the front side belt member 15 is disposed along the surrounding area WR. The front side laminated sheet is formed by forming a laminate in which the front side stretchable nonwoven fabric 11 and the front side nonwoven fabric 13 are laminated with a hot melt adhesive, and then the laminate is subjected to gear stretching. The front waistband member 15 is fixed to a folded-back portion of the front side laminated sheet which is folded back inside the front side stretchable nonwoven fabric 11.

The rear sill region WR _R of the pants-type sanitary napkin 1 includes a non-woven fabric 19 disposed on the side of the back side that is disposed close to the wearer and a non-woven fabric 21 disposed on the side away from the wearer (specifically, a spunbond non-woven fabric) The rear side laminated sheets are formed, and the rear side belt members 23 are disposed along the surrounding area WR. The back side laminated sheet is formed by forming a laminate in which the back side stretchable nonwoven fabric 19 and the back side nonwoven fabric 21 are laminated with a hot melt adhesive, and then the laminate is subjected to gear stretching. The rear waistband member 23 is fixed to a folded-back portion of the side laminated sheet after the back side stretchable nonwoven fabric 19 is folded inside. The front side nonwoven fabric 13 and the rear side nonwoven fabric 21 are integrally formed.

The front sill region WR _F and the rear sill region WR _{R are} joined by the respective two rear side joint portions 25 of the front sill region WR _{F and} the two rear side joint portions WR _R The surrounding area WR is formed, and the surrounding area WR is elongated in the winding direction Wa.
The structure of the pants-type sanitary napkin body 3 is the same as that described in Japanese Laid-Open Patent Publication No. 2016-059713, and the detailed description is omitted.

The temperature-sensitive member 7 is provided with a temperature-sensing layer 101 having a skin side surface 103 and a non-skin side surface 105, and a temperature-sensitive solution holding layer 121 adjacent to the non-skin side surface 105 of the temperature-sensing layer 101, and a temperature-sensing layer adjacent thereto. The solution holding layer 121 is opposite to the temperature-sensing layer 101 and abuts against the liquid non-penetrating layer 131 of the laundry, and is fixed to the liquid non-penetrating layer 131 and the liquid non-penetrating layer 131 is attached. The adhesive portion 133 of the pants-type sanitary napkin 1 is worn.

The temperature-sensing layer 101 and the liquid-impermeable layer 131 have substantially the same size in the height direction Lo and the surrounding direction Wa, and have a larger size than the temperature-sensitive solution holding layer 121. By sealing the peripheral portion of the temperature-sensing layer 101 and the liquid-impermeable layer 131, the temperature-sensitive member 7 can suppress the temperature-sensing solution held by the temperature-sensitive solution holding layer 121 disposed therebetween. The case where the sensing member 7 leaks to the outside.

The temperature sensitive solution retains layer 121 which retains a temperature sensitive solution (not shown) containing a temperature sensitive agent that activates the TRP channel and a lipophilic solvent.
The temperature-sensing layer 101 is composed of a liquid-impermeable film and has a plurality of slits which are capable of releasing a temperature-sensitive solution as a plurality of openings when the surrounding region WR is extended in the direction of Wa. Slot 107. As shown in FIG. 5, each of the plurality of slit portions 107 includes an opening 109 disposed on the skin side surface 103, a slit bottom 113 disposed between the skin side surface 103 and the non-skin side surface 105, and a connection opening 109 and The slit wall 111 of the slit bottom 113. In other words, each of the plurality of slit portions 107 constitutes a non-penetrating slit portion. Therefore, when the pants-type sanitary napkin 1 is not worn, the temperature-sensitive solution is less likely to move from the temperature-sensitive member 7 to the outside, for example, the absorber 5 is moved.

Among the plurality of slit portions 107, the openings 109 are arranged along the height direction Lo. The plurality of slit portions 107 are arranged apart from each other in the surrounding direction Wa. Further, the plurality of slit portions are arranged such that the two slit portions 107 adjacent to each other in the winding direction Wa are overlapped in the surrounding direction Wa, and the remaining portions are not overlapped. In the direction of the Wa.

As a result, as shown in Fig. 6, when the temperature sensitive member 7 is extended in the winding direction Wa, the openings 109 of the plurality of slit portions 107 of the non-through slit portion are elongated in the circumferential direction Wa, so that the opening 109 is made. The opening area is increased, and finally the opening 109 is split, in other words, each of the plurality of slit portions 107 constitutes a through slit.

Further, since the temperature-sensing layer 101 is composed of a liquid-impermeable film having the plurality of slit portions 107, the temperature-sensing layer 101 can be provided with a warm-sensing solution before the pants-type sanitary napkin 1 is worn. The temperature sensitive solution held by the holding layer 121 is sealed, and at the same time, when the pants-type sanitary napkin 1 is worn, the temperature-sensing layer 101 can follow the elongation of the surrounding area WR to maintain the warmth of the temperature-sensitive solution holding layer 121. The solution is released.

The warm-sensing solution holding layer 121 includes the skin side surface 123 on the temperature-sensing layer 101 side and the non-skin side surface 125 on the liquid non-penetrating layer 131 side. Further, the temperature sensitive solution holding layer 121 is composed of dust-free pulp and has a plurality of through slit portions 127. The plurality of through slit portions 127 penetrate from the skin side surface 123 to the non-skin side surface 125.

Each of the plurality of through slit portions 127 is disposed along the height direction Lo. The plurality of through slit portions 127 are arranged apart from each other in the surrounding direction Wa. Further, the plurality of through slit portions 127 are formed such that the two through slit portions 127 adjacent to each other in the winding direction Wa are overlapped in the surrounding direction Wa, and the remaining portions are not repeated. The manner is arranged in the winding direction Wa.

Therefore, when the pants-type sanitary napkin 1 is worn, the wearer stretches the crotch region WR of the pants-type sanitary napkin 1 in the wrap direction Wa while the wearer is stretched in the crotch region WR. When the pants-type sanitary napkin 1 is worn, the through slit portion 127 is elongated in the direction of the Wa, and the temperature-sensitive solution holding layer 121 and the temperature-sensitive member 7 can follow the elongation of the surrounding region WR.

The liquid non-penetrating layer 131 is composed of a stretchable film which can be elongated in the winding direction Wa.
The adhesive portion 133 is elongated in the winding direction Wa and is composed of a stretchable adhesive. Specifically, the plurality of adhesive portions 133p are disposed apart from each other in the circumferential direction Wa.

As shown in Fig. 7, when the wearer wears the pants-type sanitary napkin 1, the armor region WR of the pants-type sanitary napkin 1 is stretched in the wrap direction Wa, and then stretched in the wrap region WR. When the pants-type sanitary napkin 1 is worn in the state, the openings 109 of the plurality of slit portions 107 that do not penetrate the slit portion are expanded in the winding direction Wa, and the opening 109 is elongated in the winding direction Wa, so that the opening of the opening 109 is opened. The area is increased (refer to Fig. 6 above), the slit portion 107 is split in the thickness direction T, the slit bottom 113 is close to the non-skin side surface 105, and finally the slit bottom 113 reaches the non-skin side surface 105, and the slit portion 107 is made Through the slit portion.
As a result, the temperature-sensitive solution held by the temperature-sensitive solution holding layer 121 is moved to the wearer through the opening 109 of the plurality of slit portions 107 of the temperature-sensing layer 101, and the warmth can be imparted to the wearer.

When the user wears the pants-type sanitary napkin 1 , the temperature-sensing agent contained in the temperature-sensing solution contained in the temperature-sensitive member 7 contacts the wearer's skin, and can effectively activate the wearer's skin contacted by the warm-sensing agent. The TRP channel at the contact site can efficiently impart a warmth above body temperature (36 ° C) to the wearer's lower abdomen.

By imparting a warm feeling to the lower abdomen of the wearer, the TRP channel contacting the contact portion of the lower abdomen skin of the wearer of the warming agent is activated, and as a result, it is expected that heat is generated from the contact portion via the sympathetic nervous system. The temperature of the contact portion of the wearer's skin is raised, and the warming is close to the part of the wearer's uterus, and it is expected to alleviate the physiological pain of the wearer.
In addition, by warming close to the site of the wearer's uterus, it is expected to slow down the premenstrual syndrome (premenstrual Syndrome), coldness, menopausal disorders, and the like of the wearer.

Figs. 8 and 9 are views for explaining the pants-type sanitary napkin 201 as an absorbent article according to another embodiment (hereinafter referred to as "second embodiment") of the present disclosure. In the following, the "pants-type sanitary napkin" which is an absorbent article according to the second embodiment is hereinafter referred to as "pants-type sanitary napkin according to the second embodiment".
Specifically, Fig. 8 is a development view of the pants-type sanitary napkin 201 according to the second embodiment. Fig. 9 is a partial end view of the IX-IX end face of Fig. 8.

The pants-type sanitary napkin 201 according to the second embodiment has a height direction Lo, a circumference direction Wa, and a thickness direction (not shown) which are orthogonal to each other. In addition, the pants-type sanitary napkin 201 is composed of a pants-type sanitary napkin body 203 including an absorbent body 205, and a temperature-sensitive member 207 disposed on the pants-type sanitary napkin body 203. The wearer member 207 is disposed on the pants-type sanitary napkin body 203 so as to be placed at a position corresponding to the lower abdomen of the wearer when the wearer wears the pants-type sanitary napkin 201.

The pants-type physiological tampon main body 203 (pants-type sanitary napkin 201) is divided into a front sill area WR _F , an inter-strand area C, and a rear sill area WR _R along the height direction Lo. The absorber 205 is disposed so as to cover the front circumference area WR _{F of the} pants-type sanitary napkin body 203, the inter-strand area C, and the rear circumference area WR _R , and the temperature-sensing member 207 is disposed in the front circumference area WR _F .

The front sill region WR _F of the pants-type sanitary napkin 201 includes a first liquid-impermeable film 209 disposed on the side close to the wearer and a second liquid disposed on the side away from the wearer. The front side waist belt member 213 is disposed along the surrounding area WR between the transparent film 211 and the like. The first liquid non-penetrating film 209 and the second liquid non-penetrating film 211 are formed of a stretchable film that can be elongated in the winding direction Wa.

The rear squat area WR _R of the pants-type sanitary napkin 201 includes a first stretchable nonwoven fabric 217 disposed on the side close to the wearer, and a second stretchable nonwoven fabric 219 disposed on the side away from the wearer, and The rear side belt members 23 are disposed along the surrounding area WR between these.

The front sill region WR _F and the rear sill region WR _{R are} joined to each of the two rear side joint portions 223 of the front sill region WR _{F and} the two rear side joint portions WR of the rear sill region WR _R The surrounding area WR is formed, and the surrounding area WR is elongated in the winding direction Wa.

The temperature-sensing member 207 is provided with a temperature-sensing layer 301 having a skin side surface 303 and a non-skin side surface 305, a warm-sensing solution holding layer 321 having a skin side surface 323 and a non-skin side surface 325, and a liquid that is in contact with the laundry. Penetrating layer 327. The warm feeling providing layer 301 and the warm feeling solution holding layer 321 are disposed such that the non-skin side surface 305 of the warm feeling providing layer 301 is in contact with the skin side surface 323 of the warm feeling solution holding layer 321 . The liquid non-penetrating layer 327 is in contact with the non-skin side 325 of the warm solution holding layer 321 .

In the pants-type sanitary napkin 201 according to the second embodiment, the temperature-sensing layer 301 is composed of a first liquid-impermeable film portion 209p which is a part of the first liquid-impermeable film 209, and the liquid is not worn. The transparent layer 327 is composed of a second liquid non-penetrating thin film portion 211p which is a part of the second liquid non-penetrating film 211. The first liquid non-penetrating film portion 209p and the second liquid non-penetrating film portion 211p sandwich the temperature-sensing layer 301 therebetween, and the periphery thereof is made of an adhesive portion 329 composed of a stretchable adhesive. fixed. The temperature-improving layer 301 is not fixed to any of the first liquid non-penetrating film portion 209p and the second liquid non-penetrating film portion 211p.

The first liquid non-penetrating film portion 209p has a plurality of slit portions 307. As shown in FIG. 9, each of the plurality of slit portions 307 includes an opening 309 disposed on the skin side surface 303, a slit bottom 313 disposed between the skin side surface 303 and the non-skin side surface 305, and a coupling opening 309 and The slit wall 311 of the slit bottom 313. In other words, each of the plurality of slit portions 307 constitutes a non-penetrating slit portion. Therefore, when the pants-type sanitary napkin 201 is not worn, the temperature-sensitive solution is less likely to move from the temperature-sensitive member 207 to the outside, for example, the absorber 205. Further, each of the plurality of slit portions 307 is formed deeper than the plurality of slit portions 107 of the first embodiment. The other portions of the plurality of slit portions 307 are the same as those of the plurality of slit portions 107 of the first embodiment, and thus the description thereof will be omitted.

The temperature-sensitive solution holding layer 321 is made of dust-free pulp similarly to the temperature-sensitive solution holding layer 121 according to the first embodiment, but does not have a slit portion.

When the wearer wears the pants-type sanitary napkin 201, the armor region WR of the pants-type sanitary napkin 201 is stretched in the direction of the Wa, and then the pants-type region WR is stretched to wear the pants-type physiology. In the case of the sanitary napkin 201, the opening 309 of each of the plurality of slit portions 307 of the non-through slit portion is expanded in the surrounding direction Wa, and the opening 309 is elongated in the winding direction Wa, so that the opening area of the opening 309 is increased, and the slit portion is formed. 307 starts to split in the thickness direction T, and the slit bottom 313 approaches the non-skin side surface 305, and finally the slit bottom 313 reaches the non-skin side surface 305, and the slit portion 307 becomes the through slit portion.

As a result, the temperature-sensitive solution held by the temperature-sensitive solution holding layer 321 is moved to the wearer through the opening 309 of the plurality of slit portions 307 of the temperature-sensing layer 301, and the warmth can be imparted to the wearer.
In the temperature-sensitive member 207, the first liquid-impermeable film portion 209p constituting the temperature-sensing layer 301 is formed of a stretchable film. However, since each of the plurality of slit portions 307 is formed deep, the pants-type physiology is When the sanitary napkin 201 is worn, each of the plurality of slit portions 307 can be split.

Further, the temperature-sensitive solution holding layer 321 is composed of a dust-free pulp, and has no slit portion and has no stretchability, but the temperature-sensitive solution holding layer 321 is not fixed to the first liquid-impermeable film portion 209p (warm) Since the feeling-providing layer 301) and the second liquid-impermeable film portion 211p (liquid-impermeable layer 327) are not easily affected by the stretchability of the temperature-sensitive solution holding layer 321 .

10 and 11 are views showing a disposable diaper 401 as an absorbent article according to another embodiment (hereinafter referred to as "the third embodiment") of the present disclosure, which is an expanded view. . Hereinafter, the disposable diaper which is used as the absorbent article according to the third embodiment will be simply referred to as the disposable diaper according to the third embodiment.

The disposable diaper 401 according to the third embodiment has a height direction Lo, a circumferential direction Wa, and a thickness direction (not shown) which are orthogonal to each other. Further, the disposable diaper 401 is composed of a disposable diaper main body 403 having an absorbent body 405 and a temperature sensitive member 407 disposed in the disposable diaper main body 403. The temperature-sensitive member 407 is disposed in a disposable diaper 401 so as to be disposed at a position corresponding to the lower abdomen of the wearer when the wearer wears the disposable diaper 401.

The disposable diaper main body 403 (the disposable diaper 401) is divided into a front sill area WR _F , an inter-strand area C, and a rear sill area WR _R along the height direction Lo. The absorber 405 is disposed in the inter-strand region C and the rear crotch region WR _{R of the} disposable diaper main body 403, and the temperature-sensing member 407 is disposed in the front wrap region WR _F .

The front hem area WR _F of the disposable diaper main body 403 includes a front side stretchable nonwoven fabric 411 disposed on the side close to the wearer and a front side non-woven fabric 413 disposed on the side far from the wearer (specifically, spunbonding) The front side laminated sheet 415 is disposed between the front side laminated sheets and the surrounding area WR. The front side laminated sheet is formed by forming a laminate in which the front side stretchable nonwoven fabric 411 and the front side nonwoven fabric 413 are laminated with a hot melt adhesive, and then the laminate is subjected to gear stretching. The front waistband member 415 is fixed to the folded-back portion of the front side laminated sheet which is folded back inside the front side stretchable nonwoven fabric 411.

The rear rim region WR _R of the disposable diaper 401 is provided with a non-woven fabric 421 disposed on the side of the rear side close to the wearer and a non-woven fabric 421 disposed on the side away from the wearer (specifically, a spunbond non-woven fabric) The rear side laminated member 423 is disposed along the surrounding area WR between the rear side laminated sheets. The back side laminated sheet is formed by forming a laminate in which the back side stretchable nonwoven fabric 419 and the back side nonwoven fabric 421 are laminated with a hot melt adhesive therebetween, and then the laminate is subjected to gear stretching. The rear waistband member 423 is fixed to the folded-back portion of the side laminated sheet after the rear side stretchable nonwoven fabric 419 is folded inside. The front side non-woven fabric 413 and the rear side non-woven fabric 421 are integrally formed.

The front sill region WR _F and the rear sill region WR _{R are} joined to each of the two rear side joint portions 425 of the front sill region WR _{F and} the two rear side joint portions WR of the rear sill region WR _R The surrounding area WR is formed, and the surrounding area WR is elongated in the winding direction Wa.
Since the structure of the disposable diaper main body 403 is well known, detailed description is omitted.

The temperature sensitive member 407 is provided with a temperature-sensing layer 501 and a temperature-sensitive solution holding layer (not shown) adjacent to the non-skin side surface (not shown) of the temperature-sensing layer 501, and adjacent to the temperature sense. The solution holding layer (not shown) is opposite to the temperature-sensing layer 501 and abuts against the liquid non-penetrating layer of the laundry (not shown) and is fixed to the liquid non-penetrating layer ( The liquid non-penetrating layer (not shown) is attached to the adhesive portion of the disposable diaper 401 (not shown). The temperature-sensing layer 501 includes a plurality of slit portions 507.
The structure of the temperature sensitive member 407 is the same as that of the temperature sensitive member 7 of the first embodiment, and thus the description thereof is omitted.

When the wearer wears the disposable diaper 401, the surrounding area WR of the disposable diaper 401 is stretched in the direction of the Wa, and then worn after being stretched in the surrounding area WR. In the diaper 401, the opening 509 of each of the plurality of slit portions 507 which are not penetrating the slit portion is expanded in the circumferential direction Wa, and the opening 509 is elongated in the winding direction Wa, so that the opening area of the opening 509 is increased, and the slit portion is formed. When the 507 starts to be used, the disposable diaper 401 is split in the thickness direction, and the slit portion 507 is formed to penetrate the slit portion.
As a result, the temperature-sensitive solution held by the temperature-sensitive solution holding layer (not shown) is moved to the wearer through the opening 509 of the plurality of slit portions 507 of the temperature-sensing layer 501, and the temperature can be imparted to the wearer. .

When the user wears the disposable diaper 401, the temperature sensitive agent contained in the temperature sensitive solution contained in the temperature sensing member 407 contacts the wearer's skin, and can effectively activate the wearer's skin contacted by the warming agent. The TRP channel at the contact site can efficiently impart a warmth above body temperature (36 ° C) to the wearer's lower abdomen.

By imparting a warm feeling to the lower abdomen of the wearer, the TRP channel contacting the contact portion of the lower abdomen skin of the wearer in contact with the warming sensation solution is activated, and the result is expected to be derived from the sympathetic nervous system. The contact portion of the warming agent generates heat to increase the temperature of the contact portion of the wearer's skin.

As a result, when the wearer of the disposable diaper 401 is a female, it is expected that: (i) the prostaglandin which is a factor of physiological pain is discharged, the muscles such as the uterine muscle are relieved, and the physiological pain is alleviated ( Ii) Promote blood circulation and promote the flow of lymph, discharge waste, improve ice coldness and burn fat, and (iii) boost immunity.
When the wearer of the disposable diaper 401 is male, it is expected to: (i) expel prostaglandins, relax muscles and relieve pain, (ii) promote blood circulation and promote the flow of lymph, discharge waste, Improves coldness and burns fat, (iii) boosts immunity.

In the temperature sensing member of the present disclosure, when the surrounding area of the absorbent article is elongated in the circumferential direction, the plurality of opening portions of the temperature-sensing layer can release the temperature sensitive solution held by the temperature sensitive solution holding layer, The sensing member itself may not have elongation or stretchability, but the temperature sensing member of the present disclosure is preferably extensible or stretchable in the direction of the circumference. Thereby, the wearer does not easily feel the stiffness of the temperature sensitive member when wearing the absorbent article.

In the temperature sensing member of the present disclosure, the temperature sensitive solution contains a temperature sensitive agent for activating the TRP channel and a solvent.
The above-mentioned temperature sensitive agent is not particularly limited as long as it can activate the TRP channel, and examples thereof include an agonist for TRPV1 receptors, an agonist for TRPV3 receptors, and the like, preferably with respect to TRPV1 receptors. An agonist. This is because the activation temperature threshold of the TRPV1 receptor is higher than 43 °C, which gives a strong warmth to the wearer.

From the standpoint of the wearer's sense of security, the above-mentioned warming agent is preferably a compound derived from a plant. Examples of the above-mentioned warming agent include capsicoside, capsaicin, and capsaicinoid.
(Capsaicinoid) class (dihydrocapsaicin, dihydrocapsaicin)
(Nordihydrocapsaicin), high dihydrocapsaicin
(Homodihydrocapsaicin), high capsaicin, N-vanillyl amide
(Nonivamide), etc., Capsanchin, benzyl nicotinic acid, β-butoxyethyl nicotinic acid, N-mercaptovinylamine, vanillyl citrate, polyol, chili powder , capsicum tincture, capsicum extract, vanillin ether, vanillyl alcohol ether derivatives (such as vanillyl ether, vanillyl ether, vanillyl ether, vanillyl ether), isovanol ether, ethyl vanillyl alcohol ether, Resveratrol derivatives, substituted benzyl alcohol derivatives, substituted benzyl alcohol alkyl ethers, vanillin propylene glycol ketals, ethyl vanillin propylene glycol ketals, ginger extract, ginger oil (Ginger Oil), ginger oil (Gingerol ), Zingerone, Hesperidin and pyrrolidone carboxylic acid, and any combination of these.

The above-mentioned warming agent is preferably non-capsaicin from the viewpoint that the wearer does not easily feel pain or itching, and further preferably vanillyl alcohol ether derivatives (for example, vanilla ether, vanillyl ether, vanillyl ether, vanilla) Hexyl ether), ginger extract, Ginger Oil, Gingerol, and zingerone, and any combination of these.

The solvent is not particularly limited as long as it can contain the above-mentioned temperature sensitive agent, and examples thereof include a lipophilic solvent and a hydrophilic solvent. The solvent may be, for example, dissolved or dispersed as described above.
The lipophilic solvent may, for example, be a fat or oil, for example, a natural oil (for example, a fatty acid ester such as triglyceride, coconut oil or linseed oil), a hydrocarbon (for example, a paraffin wax such as flowing paraffin), or the like.

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

The above solvent is preferably a fat or oil (lipophilic solvent) or an alcohol (hydrophilic solvent) from the viewpoint of easily controlling the volatility and particularly reducing the volatility. Further, in the case of wearing the absorbent article, the solvent is preferably a lipophilic solvent from the viewpoint that the temperature-sensitive solution moved from the temperature-sensitive member is less likely to impede the absorbability of the absorbent article.

The amount of the temperature sensitive agent contained in the temperature sensitive solution varies depending on the type of the temperature sensitive agent. Generally, the temperature sensitive solution preferably contains 0.0001 to 5.0% by mass, and more preferably 0.0005 to 3.0% by mass. More preferably, it is 0.1 to 1.0% by mass, particularly preferably 0.3 to 0.7% by mass of the above-mentioned warming agent. This is from the point of view of the temperature effect.

In the temperature-sensitive member of the present invention, the temperature-sensitive solution may contain at least one other component as described below, in addition to the temperature-sensing agent and the solvent, insofar as it does not inhibit the temperature-sensing effect to the wearer.

The at least one other component may be a cooling sensitizer, for example, a TRP channel is activated, and the sensitizer is, for example, an agonist for a TRPM8 susceptor, an agonist for a TRPA1 susceptor, or the like, preferably An agonist of TRPM8 receptors.

Examples of the above-mentioned cooling sensitizer include menthol (for example, 1-menthol) and the derivative (for example, menthol lactate, menthol glyceryl ether, for example, 1-menthyl glyceryl ether), methyl salicylate, camphor, Essential oils derived from plants such as peppermint, eucalyptus, and the like.

The inventors of the present application found that when the warm feeling is imparted to the wearer, the warm feeling solution contains the above-mentioned cooling agent in addition to the above-mentioned warm feeling agent, whereby the wearer can feel the desired temperature until the wearer feels During the temperature sensing time of the time, itching is not easily felt at the contact portion and the peripheral portion in contact with the temperature sensitive solution.

In the above case, the temperature sensitive solution is preferably contained in an amount of 0.0001 to 5.0% by mass, particularly preferably 0.0005 to 3.0% by mass, more preferably 0.1 to 1.0% by mass, particularly preferably 0.3 to 0.7% by mass. This is from the viewpoint that the wearer does not easily feel itching during the temperature sensing time and does not easily feel excessive coolness.

In the above case, the temperature sensitive solution preferably contains the above temperature sensitive agent at a mass ratio of 20:1 to 1:10, particularly preferably 10:1 to 1:5, more preferably 2:1 to 1:1. Cool sensation. This is because the wearer does not easily feel itching during the temperature sensing time, and does not easily feel the cool feeling and feels the warm feeling easily.

The at least one other component may, for example, be a coolant, for example, a coolant which lowers the ambient temperature by heat of vaporization. The coolant is, for example, an alcohol, and examples thereof include methanol and ethanol.

Examples of the at least one other component include polyasoxylated oil, polyfluorene oxide, and polyoxynoxy resin.
The at least one other component mentioned above is, for example, an antioxidant, and examples thereof include BHT (2,6-di(tributyl)p-cresol), BHA (butylated hydroxymethoxybenzene), and gallic acid propyl group. Wait.

The at least one other component is, for example, a vitamin, and examples thereof include a natural vitamin and a synthetic vitamin. The vitamin is, for example, a water-soluble vitamin, for example, a vitamin B group, and examples thereof include vitamin B ₁ , vitamin B ₂ , vitamin B ₃ , and vitamins. B ₅ , vitamin B ₆ , vitamin B ₇ , vitamin B ₉ , vitamin B _12, etc., and vitamin C.
The vitamin is, for example, a fat-soluble vitamin such as a vitamin A group, a vitamin D group, a vitamin E group, and a vitamin K group.
In addition, the above vitamins also include such derivatives.

The at least one other component is, for example, an amino acid, and examples thereof include Alanine, Arginine, Lysine, Histidine, Proline, and the like. Hydroxyproline and the like as well as peptides.

The at least one other component is, for example, a zeolite, for example, a natural zeolite, and examples thereof include analcime, chabazite, stilbite, sodium zeolite (Natrolite), zeolite and rod zeolite (Thomosonite), and synthetic zeolite.
Examples of the at least one other component include cholesterol, hyaluronic acid, lecithin, ceramide, placenta, collagen, elastin, squalane, petrolatum, and sucrose. Trehalose) et al.

Further, the at least one other component is, for example, a drug, and examples thereof include a skin astringent agent, an anti-blistering agent, an anti-wrinkle agent, an anti-floating agent, a whitening agent, an antibacterial agent, and an antifungal agent.
The skin astringent agent may, for example, be an oil-soluble skin astringent such as zinc oxide, aluminum sulfate or tannic acid, for example, an oil-soluble polyphenol. Examples of the above oil-soluble polyphenols include natural oil-soluble polyphenols such as yellow leaf extract, small forsythia extract, stalk extract, chamomile extract, burdock extract, a red extract, Japanese cockroach Tree Extract, Western Linden Tree Extract, White Birch Extract, Euphorbia Extract, Clary Sage Extract, A String of Red Extract, Pecan Extract, Cinnamon Extract, Loquat Leaf Extract, Linden Extract, Hop Extract , horse chestnut extract, medlar extract, etc.

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

Examples of the antifloating agent include xanthine compounds such as aminophylline, caffeine, theophylline, and theobromine.
Examples of the above whitening agent include nicotine amide, citric acid, arbutin, glucosamine and derivatives, phytosterol derivatives, ascorbic acid and the derivatives, and mulberry extract and placenta extract.

Further, examples of the at least one other component include anti-inflammatory components, pH adjusters, antibacterial agents, moisturizers, perfumes, coloring matters, dyes, pigments, and plant extracts. Examples of the anti-inflammatory component include natural anti-inflammatory agents such as peony, scutellaria, small forsythia, chamomile, licorice, peach leaf, arborvitae, perilla extract, and the like, and synthetic anti-inflammatory agents such as allantoin, Potassium glycyrrhizin and the like.
Examples of the pH adjuster include those in which the skin is kept weakly acidic, such as malic acid, succinic acid, citric acid, tartaric acid, or lactic acid.
The pigment is exemplified by titanium oxide.

The temperature sensing member of the present disclosure, especially the above temperature sensitive solution, preferably contains no heat generating agent. Therefore, it is not easy to cause low temperature burns to the wearer. Further, since the temperature-sensitive member itself does not generate heat, when the temperature-sensitive member is fixed to the body of the absorbent body with an adhesive or the like, the adhesive portion is not easily softened, and when the absorbent article is worn, the temperature-sensitive member is not easily removed from the absorbent article. Fall off in the body.

The heat generating agent is not particularly limited as long as it is heated by the heat generating agent itself, and examples thereof include oxidizing heat of metal powder (for example, iron powder), neutralization heat of acid and alkali, and hydration heat of inorganic salt. Capable.

In the temperature-sensing member of the present invention, the temperature-sensing layer is preferably used in the case where the temperature-sensitive solution which is not easily held by the temperature-sensitive solution holding layer leaks to the outside of the temperature-sensitive member when the absorbent article is not worn. It is composed of a liquid-impermeable film. The liquid non-penetrating film can be used as a back sheet in the technical field of absorbent articles without any particular limitation, and examples thereof include polyolefin sheets such as polyethylene sheets, polypropylene sheets, and the like.

The temperature-sensing layer may be air-tight when the temperature-sensing solution held by the temperature-sensitive solution holding layer contains a high volatility, such as a solvent having a high volatility and/or a sensitizing agent having a high volatility. The air-tightness imparting layer having a gas-tight property may be a laminated film of the airtight film and the liquid non-penetrating film. Examples of the gas-tight film include an ethylene-vinyl alcohol copolymer; a vinylidene chloride-based polymer such as a dichloroethylene-methyl acrylate copolymer; a polyvinyl alcohol; a nylon such as nylon 6; an aluminum foil; A film of aluminum (polyethylene terephthalate or the like) is vapor-deposited with alumina or cerium oxide.

In order to enhance the skin contact of the wearer, the temperature-sensing layer may be a laminated sheet of the cloth disposed on the side of the skin (for example, a non-woven fabric such as a spunbonded nonwoven fabric or a water-jet nonwoven fabric) and the liquid-permeable film. The above-mentioned fabric may be equivalent to the fabric listed in the layer where the temperature sensitive solution is held.

The temperature-sensing layer includes a plurality of openings that release the temperature-sensitive solution when the temperature-sensitive member is elongated in the circumferential direction when the temperature-sensitive member is elongated in the circumferential direction. Each of the plurality of opening portions can penetrate from the skin side surface of the temperature-sensing layer to the non-skin side surface in the thickness direction of the temperature-sensing member, and the temperature-sensitive solution is not easily held when the absorbent article is not worn. From the viewpoint of keeping the temperature-sensing solution leaked to the outside of the temperature-sensing member, it is preferable that each of the plurality of the opening portions penetrates from the skin side of the temperature-sensing layer to the non-surface in the thickness direction of the temperature-sensing member. The side of the skin is the non-through opening.

The non-penetrating opening portion may be arranged such that the skin side surface of the warm feeling providing layer does not reach the non-skin side surface of the warm feeling providing layer, or the non-skin side of the warm feeling providing layer is used as a starting point. It is not arranged to reach the side of the skin of the warm-sensing layer.

The depth of the non-penetrating opening portion differs depending on the elongation of the surrounding region of the absorbent article, the elongation property of the temperature-sensing layer, and the fracture property of the material constituting the temperature-sensing layer. The depth of the portion is preferably 90% or less, more preferably 70% or less, and still more preferably 50% or less with respect to the thickness of the temperature-sensing layer. Further, the depth of the non-penetrating opening portion is preferably 10% or more, more preferably 20% or more, and still more preferably 30% or more, of the thickness of the temperature-sensing layer. Therefore, when the absorbent article is not worn, the temperature sensitive solution can be prevented from being moved or volatilized from the outside of the temperature sensitive member, and the absorbent article can be worn when the absorbent article is worn. A warming agent that retains the warmth of the solution is retained from the temperature-sensing layer.

Each of the plurality of opening portions preferably extends in a direction intersecting the direction of the weir in the plane direction of the temperature sensitive member, and is preferably in a direction orthogonal to the direction of the weir, that is, a height direction Extend. Thereby, when the temperature sensitive member is elongated in the direction of the circumference, the area of each opening of the plurality of opening portions is increased, and the temperature sensitive solution held by the temperature sensitive solution holding layer is easily moved to the wearer.

Preferably, the plurality of opening portions are two opening portions adjacent to each other in the winding direction, and a part of the opening portions are repeated in the winding direction, and the remaining portions are not repeated. The ground is arranged in the direction of the circumference. Therefore, when the absorbent article is not worn, it is difficult to maintain the temperature sensitive solution in the state of moving or volatilizing the temperature sensitive solution to the outside of the temperature sensitive member, and when the absorbent article is worn, the temperature is maintained. The feeling-providing layer itself is excellent in stretchability in the direction of the circumference.

In the temperature-sensitive member of the present invention, the temperature-sensitive solution-retaining layer is not particularly limited as long as it can maintain a warm feeling solution, and may be composed of a fabric such as a non-woven fabric, a woven fabric, or a knitted fabric. The above fabric is preferably non-woven from the viewpoint of ease of manufacture.
Examples of the nonwoven fabric include dust-free pulp, hot air non-woven fabric, spunbonded nonwoven fabric, point-bonded nonwoven fabric, water needle nonwoven fabric, needle-punched nonwoven fabric, melt-blown nonwoven fabric, and the like (for example, SMS or the like).

Examples of the fibers constituting the cloth include natural fibers, synthetic fibers, and semi-synthetic fibers. Examples of the natural fiber include wood pulp fibers and regenerated cellulose fibers.
The regenerated cellulose fiber may, for example, be an anthraquinone fiber, for example, a mucus liquid obtained from a mucus, a copper ammine fiber obtained from a multi-brain fiber, a Modal fiber, or a copper ammonia salt solution of cellulose ( Also known as "Cupra"; it is obtained by an organic solvent spinning method using an organic solvent of a mixed solution of an organic compound and water, and is not a cellulose derivative of Lyocell and Tencel.
The semi-synthetic fiber may, for example, be a semi-synthetic cellulose fiber, for example, an acetate fiber such as a triacetate fiber or a diacetate fiber.

The synthetic fiber may, for example, be a heat-fusible fiber, for example, a polyolefin-based polymer such as polyethylene or polypropylene; a polyester-based polymer such as a terephthalate-based polymer such as polyparaphenylene. Ethylene formate (PET), polybutylene terephthalate, polybutylene terephthalate; polyamine-based polymer, such as nylon 6 or nylon 6,6; acrylic polymer; polyacrylonitrile A polymer formed; or a denature of such or a combination thereof or the like.

In the temperature sensitive member of the present disclosure, the fabric constituting the temperature sensitive solution retaining layer may have hydrophilicity or lipophilicity. The hydrophilic fabric can be treated by a hydrophilizing agent generally known in the art (for example, by applying a hydrophilizing agent or a kneading hydrophilizing agent), or a fabric (fiber, fiber raw material, etc.) constituting the fabric. form. Examples of the hydrophilizing agent include an alkyl phosphate salt, an alkyl phosphate metal salt, and the like. Further, examples of the hydrophilizing agent include a mixture of an alkyl phosphate ester having 10 to 30 carbon atoms and a trimethylglycine compound, a sulfate salt or a sulfonate salt having 10 to 30 carbon atoms, and an alkyl phosphate salt. And a mixture of polyether-denatured polyoxane and the like.
The degree of hydrophilization of the fabric can be adjusted by the kind, concentration, amount, and the like of the above hydrophilizing agent.

A oleophilic fabric which can be treated by a lipophilic agent generally known in the art (for example, by coating a lipophilic agent or a kneading lipophilic agent) or by forming a fabric (fiber, fiber) Formed from raw materials, etc.). Examples of the above lipophilicizing agent include fatty acid esters (for example, glycerides) and hydrocarbons (for example, linear hydrocarbons).
The degree of lipophilicity of the fabric can be adjusted by the kind, concentration, amount, and the like of the above lipophilic agent.

In the temperature-sensing member of the present disclosure, the temperature-sensitive solution retaining layer may have no elongation in the direction of the weir, and may have an elongation in the direction of the weir.
The above-mentioned fabric can be mentioned as a temperature-sensitive solution holding layer which does not have the extensibility in the direction of the circumference. The temperature-sensing solution-retaining layer which does not have the extensibility in the direction of the circumference is preferably not joined to the liquid-impermeable layer and the liquid-impermeable layer in the case where the temperature-sensitive solution-holding layer is separated from the two or more. When the temperature-sensing layer and the liquid-impermeable layer are elongated in the direction of the weir, the temperature-sensitive solution retaining layer sometimes hinders the elongation of the temperature-inducing layer and the liquid-impermeable layer in the direction of the weft. The reason.

From this viewpoint, the temperature-sensitive solution holding layer which does not have the elongation in the direction of the weir is preferably joined to one or both of the temperature-imparting layer and the liquid-impermeable layer, or not It is bonded to both the temperature-sensing layer and the liquid-impermeable layer. Further, from the above viewpoint, when the temperature-sensitive solution holding layer which does not have the elongation in the direction of the circumference is joined to both the temperature-sensing layer and the liquid-impermeable layer in a single place, the layer is provided to the temperature-sensing layer. The joint of the joint and the liquid non-penetrating layer is preferably repeated in the thickness direction of the temperature sensitive member.

The temperature-sensitive solution holding layer having an elongation in the direction of the weir is a stretchable fabric such as a stretchable nonwoven fabric. Further, the temperature-sensitive solution holding layer having an elongation in the direction of the weir is a fabric having a plurality of through slit portions.

Each of the plurality of through slit portions preferably extends in a direction intersecting the crotch direction, and particularly preferably extends in a direction orthogonal to the crotch direction, that is, in the height direction. Thereby, when the temperature sensitive member is elongated in the circumferential direction, the area of each of the plurality of through slit portions is increased, whereby the temperature sensitive solution holding member can be elongated in the circumferential direction.

Preferably, the plurality of through slit portions are formed by two through slit portions adjacent to each other in the surrounding direction, and a part of the through slit portions are repeated in the surrounding direction, and the remaining portions are not repeated. The ground is arranged in the direction of the circumference. Thereby, the temperature sensitive solution holding member itself is excellent in stretchability in the direction of the wrap when the absorbent article is worn.

Temperature sensitive member of the present disclosure, the thickness of the temperature sensitive solution was maintained at 30g / cm ² load, the preferred thickness of 3g cm ² when a load / 70% or less, and particularly preferably 60% or less, more preferably 50% or less. Thereby, when body pressure or the like is applied to the temperature sensing member, the temperature sensitive solution holding layer is not easily broken, and the temperature sensitive solution can be maintained by the temperature sensitive solution holding layer, and the plurality of opening portions provided by the temperature sensing layer are provided. It is easy to move to the skin of the wearer.

Temperature sensitive member of the present disclosure, the thickness of the layer of temperature-sensitive solution was maintained at 10g / cm ² load, the preferred thickness of 3g cm ² when a load / 70% or more, and particularly preferably 80% or more, more preferably more than 90 percent. Thereby, the temperature sensitive solution can be prevented from being excessively broken by the wearing pressure of the clothes or the like.

In the present specification, the thickness at the load of 30 g/cm ² , 10 g/cm ² and 3 g/cm ² is measured as follows.
(1) Prepare FS-60DS manufactured by Daiei Scientific Seiki Co., Ltd. in a constant temperature and humidity chamber at a temperature of 20 ± 5 ° C and a humidity of 65 ± 5% RH, and place the solution in the same constant temperature and humidity chamber. Penetrating sheet (hereinafter referred to as "sample") for 24 hours.
(2) The location is changed to determine the thickness of the sample at 10, and the average of these is used as the thickness of the sample.
The load is adjusted by changing the measuring piece. To load: use conditions 3g / cm ² diameter: measuring element of 44mm, to load: diameter under 10g / cm ² is: 25mm measuring member, to load: diameter under 30g / cm ² is: 14mm Measuring piece.

The temperature-sensitive solution holding layer preferably has a basis weight of 10 to 100 g/m ² , and more preferably 20 to 50 g/m ² .

In the temperature-sensitive member of the present invention, the liquid-impermeable layer is not particularly limited as long as it can be elongated in the direction of the weir and does not penetrate the temperature-sensitive solution, and examples thereof include a stretchable film (for example, a polyurethane film) and a laminated sheet of the stretchable film and another film (for example, a laminated film in which an elongated stretchable film is applied to another film), and a stretched product of the laminated sheet, and the like .
The above-mentioned stretchable film is, for example, XME99107 Blue Flute Elastic manufactured by 3M Company.

The liquid non-penetrating layer may be airtight when the temperature sensitive solution held by the temperature sensitive solution holding layer contains a volatile one, such as a highly volatile solvent and/or a highly volatile warming agent. The airtight non-penetrating layer may be a laminated film of the airtight film and the stretchable film (for example, a laminated film in which an elongated stretchable film is adhered to the airtight film). The airtight film is exemplified as the temperature-sensitive layer.

In the temperature sensing member of the present disclosure, the liquid non-penetrating layer is preferably not moisture permeable. In this way, the skin of the wearer's skin, such as moisture or water vapor, which is not easily penetrated by the liquid penetrating layer, is discharged outside the temperature sensitive member, and it is easy to keep the wearer's skin mainly the swelling state of the stratum corneum, and the temperature is warm. The solution readily reaches the TRP channel that is predominantly present in keratinocytes (keratinocytes). As a result, the temperature sensing time can be shortened, and the wearer does not easily feel itching during the temperature sensing time.
The liquid non-penetrating layer preferably has a basis weight of 10 to 50 g/m ² , particularly preferably 15 to 30 g/m ² .

In the temperature-sensitive member of the present invention, the temperature-sensitive solution holding layer or the temperature-sensing layer composed of the laminated sheet may contain a heat-generating fiber, a heat-insulating fiber, and a hygroscopic fiber, and any of these. The fibers of the group formed by the combination (hereinafter sometimes referred to simply as "functional fibers").

When the temperature-sensing solution-retaining layer or the temperature-sensing layer composed of the above-mentioned laminated sheet contains the above-mentioned predetermined functional fibers, it is easy to cause the wearer's skin to be mainly the stratum corneum due to moisture such as evapotranspiration and sweat of the wearer. To swell, the warm sensation solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the temperature sensing time can be shortened, and the wearer does not easily feel itching during the temperature sensing time.

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

Examples of the moisture-absorbing and heat-generating fiber include acrylate-based fibers and wool. Examples of the heat storage fiber include a fiber containing a substance that absorbs sunlight and is converted into heat energy (zirconium carbide or the like), a fiber containing carbon, and the like. The far-infrared radiation fiber may, for example, be a fiber containing a ceramic that radiates far-infrared rays upon heating.
Examples of the heat insulating fiber include hollow fibers, feathers, and the like.
The above-mentioned natural fiber, semi-synthetic fiber, etc. are mentioned as said hygroscopic fiber.

Specifically, in the temperature-sensitive member of the present invention, when the temperature-sensitive solution holding layer or the temperature-sensing layer composed of the laminated sheet contains hygroscopic heat-generating fibers, moisture such as evapotranspiration and sweat from the wearer's skin When supplied, the hygroscopic heat-generating fiber generates heat and the wearer easily sweats. Then, due to the moisture of the wearer's sweat, the stratum corneum of the wearer's skin is mainly swollen, and the warm feeling solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the temperature sensing time can be shortened, and the wearer does not easily feel itching during the temperature sensing time.

Further, even when the warm-sensing solution-retaining layer or the temperature-sensing layer composed of the above-mentioned laminated sheet contains the heat-storing fiber or the far-infrared ray-irradiating fiber, the wearer is liable to sweat, and the wearer is caused by the sweat of the wearer's sweat. The main cause of the skin is that the stratum corneum becomes swollen, and the warm feeling solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the temperature sensing time can be shortened, and the wearer does not easily feel itching during the temperature sensing time.

In the temperature-sensitive member of the present invention, when the temperature-sensitive solution holding layer or the temperature-sensing layer composed of the laminated sheet contains heat-insulating fibers, the wearer easily sweats and wears due to the moisture of the wearer's sweat. The skin of the person is mainly caused by the swelling of the stratum corneum, and the warm feeling solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the temperature sensing time can be shortened, and the wearer does not easily feel itching during the temperature sensing time.

In the temperature-sensing member of the present invention, when the temperature-sensitive solution holding layer or the temperature-sensing layer composed of the laminated sheet contains hygroscopic fibers, the hygroscopic fibers can maintain moisture such as evapotranspiration and sweat of the wearer. The skin of the wearer is mainly caused by swelling of the stratum corneum, and the warm feeling solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the temperature sensing time can be shortened, and the wearer does not easily feel itching during the temperature sensing time.

In the temperature-sensitive member of the present disclosure, an additional member such as an auxiliary sheet or the like may be included between the temperature-sensing layer and the temperature-sensitive solution holding layer.
The material of the above-mentioned auxiliary sheet may be exemplified by the fabric constituting the temperature sensitive solution holding layer.

The temperature sensitive member of the present invention may include an adhesive for fixing the temperature sensitive member to an adhesive portion of the absorbent article, and an adhesive for forming the adhesive portion, and examples thereof include a hot melt adhesive such as styrene-ethylene-butadiene. - Styrene (SEBS), styrene-butadiene-styrene (SBS), styrene-isoprene-styrene (SIS), etc., mainly based on rubber or linear low-density polyethylene. The polyolefin is a main pressure-sensitive adhesive or a heat-sensitive adhesive; a water-soluble polymer (for example, polyvinyl alcohol, carboxymethyl cellulose, gelatin, etc.) or a water-swellable polymer (for example, polyvinyl acetate, A water-sensitive adhesive or the like composed of sodium polyacrylate or the like.

The adhesive portion and the adhesive capable of forming the adhesive portion preferably have extensibility and stretchability, and the adhesive having extensibility or stretchability is, for example, JM-5332 manufactured by Fuller.

Further, the above-mentioned adhesive portion may be intermittently disposed in the liquid non-penetrating layer of the temperature-sensitive member, which is a non-stretchable hot-melt adhesive generally used in the technical field, for example, (i) point-like adhesion The portion of the portion (ii) is a dot-shaped adhesive portion intermittently arranged in the height direction, or (iii) a linear adhesive portion extending in the height direction is intermittently arranged in the circumferential direction.
The adhesive portion and the adhesive may be used in the bonding of the materials constituting the temperature sensitive member, for example, the bonding of the temperature-sensing layer and the liquid-impermeable layer (for example, a circular seal), and the temperature-sensing layer of the temperature-sensitive solution holding layer. And/or bonding of the liquid non-penetrating layer, and the like.

The absorbent article of the present invention is preferably packaged in a packaging sheet before use, for example, in a single package, but the temperature sensitive solution held by the temperature sensitive solution holding layer is held in the temperature sensing layer and liquid of the temperature sensitive member. It does not penetrate the layer, so it can also be packaged without the airtight packaging sheet.

The material of the above-mentioned packaging sheet may, for example, be a polyolefin-based polymer such as polyethylene or polypropylene. The packaging sheet may include an airtight layer from the viewpoint of improving the airtightness of the single package, and examples of the material of the inner liner include an ethylene-vinyl alcohol copolymer and a vinylidene chloride polymer. For example, dichloroethylene-methyl acrylate copolymer; polyvinyl alcohol; nylon, such as nylon 6, aluminum foil; alumina, cerium oxide, etc., deposited on a substrate film (polyethylene terephthalate, etc.) By.

The absorbent article of the present invention is not particularly limited as long as it has a surrounding area and has an absorbent body, and examples thereof include a pants-type sanitary napkin and a disposable diaper.

<The use of temperature-sensitive members and temperature-sensitive members in the use of absorbent articles>
Further, the present disclosure relates to the use of a temperature-sensitive member used for adhering to an absorbent article and a temperature-sensitive member to be attached to an absorbent article.
The configuration of the temperature sensitive member and the absorbent article is described in the "absorbent article", and thus the description thereof is omitted here.
The area of the absorbent article to which the temperature sensitive member is attached may be an area in which the absorbent article is stretched when compared with the case where it is not worn, and is not particularly limited, and may be attached to any area of the absorbent article. .
The area of the absorbent article to which the temperature sensitive member is to be applied is preferably a surrounding area of the absorbent article having a stretchable area in the direction of the circumference. In this case, since the elongation is higher than when the wearing area is worn, the plurality of openings of the temperature-sensing layer of the temperature-sensitive member are likely to release the warm feeling solution.

<First embodiment>

1‧‧‧ Shorts type sanitary napkin

3‧‧‧ Shorts type physiological sanitary napkin body

5‧‧‧ absorber

7‧‧‧Temperature components

11‧‧‧ Front side stretchable non-woven fabric

13‧‧‧ Front side non-woven

15‧‧‧Front belt components

17‧‧‧ Front side joint

19‧‧‧Back side stretchable non-woven fabric

21‧‧‧ Back side non-woven

23‧‧‧Back side belt members

25‧‧‧Back side joint

101‧‧‧Temperature-giving layer

103‧‧‧Skin side

105‧‧‧Non-skin side

107‧‧‧Slits

109‧‧‧ openings

111‧‧‧ slit wall

113‧‧‧Slit bottom

121‧‧‧Temperature solution retention layer

123‧‧‧ Skin side

125‧‧‧Non-skin side

127‧‧‧through slit section

131‧‧‧Liquid penetrating layer

133‧‧‧Adhesive

133p‧‧‧Adhesive part

Wa‧‧‧ direction

Lo‧‧‧ height direction

T‧‧‧ thickness direction

WR‧‧‧ area

WR _F ‧‧‧ front area

WR _R ‧‧‧After the encirclement area

C‧‧‧inter-stock area

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

Fig. 2 is a development view of a pants-type sanitary napkin 1 according to the first embodiment.

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

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

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

Fig. 6 is a view for explaining a plurality of slit portions 107 when the temperature sensing member 7 is extended in the winding direction Wa.

Fig. 7 is a view showing the wearing state of the pants-type sanitary napkin 1.

Fig. 8 is a development view of a pants-type sanitary napkin 201 according to the second embodiment.

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

Fig. 10 is a development view of the disposable diaper 401 according to the third embodiment.

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

Claims (15)

An absorbent article having a rim region that is extensible in a direction of the rim, and includes: an absorbing body; and the rim region disposed in the slanting direction and imparting a warm feeling to the wearer An absorbent article of a temperature-sensitive member characterized by: The temperature sensitive member includes: a temperature-sensing layer, a liquid-impermeable layer, and a temperature-sensitive solution holding layer disposed between the temperature-sensitive solution; The aforementioned temperature sensitive solution contains: a temperature sensitive agent for activating the TRP channel, and a solvent; The temperature-sensing layer is provided to release a plurality of openings of the temperature-sensitive solution when the surrounding region is elongated in the circumferential direction. The absorbent article according to claim 1, wherein the temperature-sensing layer is composed of a liquid-impermeable film, and each of the plurality of opening portions extends in a direction crossing the direction of the weir. The absorbent article according to claim 2, wherein the temperature-sensing layer has a skin side surface and a non-skin side surface facing the skin side surface, and each of the plurality of opening portions is formed in a thickness direction of the temperature-sensitive member It is disposed so as not to reach the non-skin side from the side of the skin, or to reach the side of the skin from the non-skin side. The absorbent article according to claim 3, wherein each of the plurality of opening portions is a non-penetrating slit portion, and the plurality of opening portions are two opening portions adjacent to each other in the surrounding direction The manner of partially repeating in the aforementioned circumferential direction is intermittently arranged in the aforementioned circumferential direction. The absorbent article according to any one of claims 1 to 4, wherein the temperature-sensitive solution holding layer is made of a fabric and has a plurality of through slit portions extending in a direction crossing the direction of the weir. The absorbent article according to claim 5, wherein the plurality of through slit portions are intermittently arranged in the circumferential direction such that two adjacent through slit portions are partially overlapped in the circumferential direction on. The absorbent article according to any one of claims 1 to 6, wherein the liquid non-penetrating layer is a stretchable film which is extensible in the direction of the weir. The absorbent article according to any one of claims 1 to 7, wherein a thickness retention ratio of a ratio of a thickness of the temperature-sensitive solution-holding layer at a load of 30 g/cm ² to a thickness at a load of 3 g/cm ² is a thickness retention ratio. 70% or less. The absorbent article according to any one of claims 1 to 8, wherein the warming agent is an agonist relative to a TRPV1 receptor. The absorbent article according to any one of claims 1 to 9, wherein the solvent is a lipophilic solvent. The absorbent article according to any one of claims 1 to 10, wherein the absorbent article does not contain a heat generating agent. The absorbent article according to any one of claims 1 to 11, wherein the absorbent article is selected from the group consisting of a pants-type sanitary napkin and a disposable diaper. A temperature-sensitive member that is applied to an absorbent article and imparts a warm feeling to the wearer's temperature-sensing member, which is characterized by: The temperature sensitive member includes a temperature-sensing layer and a liquid-impermeable layer, a temperature-sensitive solution holding layer containing a temperature-sensitive solution disposed therebetween, and a liquid-impermeable layer and Used to attach the aforementioned temperature sensitive member to the adhesive portion of the absorbent article; The aforementioned temperature sensitive solution contains: a temperature sensitive agent for activating the TRP channel, and a solvent; The temperature-sensing layer includes a plurality of openings that release the temperature-sensitive solution when elongated in a predetermined direction. The temperature-sensing member according to claim 13, wherein the temperature-sensing member has a surrounding area that is stretchable in the direction of the circumference, and is used in contact with the surrounding area of the absorbent article having the absorbent body, the predetermined The direction is the aforementioned direction of the circumference. A temperature sensitive member is applied to an absorbent article, which imparts a warm feeling to the wearer's temperature sensitive member in contact with the absorbent article, and is characterized by: The temperature sensitive member includes a temperature-sensing layer and a liquid-impermeable layer, a temperature-sensitive solution holding layer containing a temperature-sensitive solution disposed therebetween, and a liquid-impermeable layer and Used to attach the aforementioned temperature sensitive member to the adhesive portion of the absorbent article; The aforementioned temperature sensitive solution contains: a temperature sensitive agent for activating the TRP channel, and a solvent; The temperature-sensing layer includes a plurality of openings that release the temperature-sensitive solution when elongated in a predetermined direction.