JP2020039965A - Warming article - Google Patents

Abstract

To provide a warming article whose warming operation is controllable by a wearer.SOLUTION: A warming article 1 comprises a liquid-permeable sheet 7, a liquid-impermeable sheet 9, and a warming body 31 between the liquid-permeable sheet 7 and the liquid-impermeable sheet 9. The warming body 31 is constituted of a fabric and contains a warming solution containing a warming agent to activate a TRP channel and a solvent.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to warming articles.

US Pat. No. 5,047,097 discloses an absorbent article, preferably a sanitary article, containing an agent capable of transmitting perception to a wearer without the need to create external conditions perceived by the wearer, with the aim of improving comfort. A disposable absorbent article is described.
Also, in paragraph [0040] of US Pat. No. 6,086,097, preferred agents include warming agents, and the warming agents are capable of receiving a temperature without having to create a change in temperature on the body surface of the wearer of the article. It is described that the container (ie, heat) can be stimulated.

  Further, in paragraph [0109] of Patent Document 1, as a carrier vehicle of a delivery system suitable for containing an agent, a composition in the form of a lotion, cream, oil, ointment, powder, emulsion, foam, or gel; Aqueous or alcoholic solutions, oils and lipids such as hydrocarbon oils, fatty acid esters, long chain alcohols, and silicone oils, and finely divided solids such as starch or talc are described.

JP 2004-528090 A

The inventors of the present application have confirmed that when a heating agent as described in Patent Document 1 and a lipophilic solvent such as oil are combined, a heating agent such as iron powder, a heating agent, and a hydrophilic solvent (such as water) In general), the time until the desired temperature is felt (heat sensing time) tends to be longer, and the heat sensing time also depends on the presence or absence of moisture such as sweat of the wearer. It turned out to change greatly. If the warmth sensing time is long, the wearer tends to feel itching, especially at the beginning of wearing.
Therefore, an object of the present disclosure is to provide a warm sensation article that allows a wearer to control a warming effect.

  DISCLOSURE OF THE INVENTION The present disclosure is a warming article comprising a liquid-permeable sheet, a liquid-impermeable sheet, and a warming body between the liquid-permeable sheet and the liquid-impermeable sheet, The present inventors have found a warming article characterized in that the body is composed of a cloth and contains a warming solution containing a warming agent for activating TRP channels and a solvent.

  The warming article of the present disclosure allows the wearer to control the warming effect.

FIG. 1 is a plan view of a sanitary napkin 1 according to the first embodiment. FIG. 2 is an exploded perspective view of the sanitary napkin 1 according to the first embodiment. FIG. 3 is a cross-sectional view of the sanitary napkin 1 in a III-III cross section. FIG. 4 is a diagram showing a worn state of the sanitary napkin 1 according to the first embodiment. FIG. 5 is a diagram for explaining a shorts type sanitary napkin 101 according to the second embodiment. FIG. 6 is a diagram for explaining a disposable diaper 201 according to the third embodiment. FIG. 7 is a perspective view of an individual package body 303 of a warm sheet in which a warm sheet 301 according to the fourth embodiment is individually packaged. FIG. 8 is a perspective view of a warm sheet 301 according to the fourth embodiment. FIG. 9 is an exploded perspective view of a warm sheet 301 according to the fourth embodiment. FIG. 10 is a diagram showing a wearing state of the warm sheet 301 according to the fourth embodiment.

Specifically, the present disclosure relates to the following aspects.
[Aspect 1]
A liquid permeable sheet, a liquid impermeable sheet, a warm sensation article comprising a warming body between the liquid permeable sheet and the liquid impermeable sheet,
The warming body is composed of a fabric, and includes a warming solution containing a warming agent that activates a TRP channel and a solvent.
The above-mentioned warm sensation article characterized by the above-mentioned.

  The inventor of the present application has found that in a warming article containing a warming agent, the time until a desired temperature is felt (heat sensing time) tends to be longer than that of a heating article containing a heating agent (for example, iron powder). Yes, it was found that the wearer was apt to remember itching during the heat sensing time. In addition, the inventor of the present application has reported that a heat-sensitive article containing a warming agent has a condition of the skin of the wearer (for example, the dryness of the skin of the wearer) as compared with a heat-generating article containing a heating agent (for example, iron powder). Etc.), there was a difference in how to remember warmth. For example, when the wearer's skin is moistened with moisture, it is easier to maintain a state in which the stratum corneum of the wearer's skin is mainly swollen compared to the case where the wearer's skin is dry, Since the warming solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes), the warming feeling is easily remembered (heat sensing time is short).

In the warm sensation article, when the wearer presses a portion overlapping the warm sensation body of the warm sensation article in the thickness direction of the warm sensation article, the warm sensation solution is released from the warm sensation body and the liquid permeable sheet is formed. The passed warmth solution reaches the skin of the wearer and, compared to before pushing, can further impart a warmth to the wearer, and when the warmth is insufficient, the wearer is The warm feeling can be increased, and the warm feeling article is excellent in on-demand property.
In addition, as a result of the above-mentioned warming sensation agent, the TRP channel of the warming agent contacting portion of the wearer's skin that was in contact with the warming agent was activated, and as a result, heat was released from the warming agent contacting portion via the sympathetic nervous system. Is expected to increase the temperature of the wearer's skin at the temperature-sensitive agent contacting portion.

[Aspect 2]
The warm-feeling article according to aspect 1, wherein the solvent is a lipophilic solvent.

When the solvent constituting the warming solution is a lipophilic solvent, the volatility of the solvent is adjusted as compared with the case where the solvent is a hydrophilic solvent, for example, water. The temperature can be reduced, and packaging of the warm-sensing article can be simplified.
On the other hand, the inventors of the present application confirmed that, when a lipophilic solvent was selected as a solvent constituting the warming solution, the solvent constituting the warming solution was a hydrophilic solvent, for example, as compared with the case where water was used. It has been found that the above-mentioned temperature sensing time tends to be long.

  In the warm sensation article, when the wearer pushes the warm sensation article, the warm sensation solution is released from the warm sensation body, moves to the liquid permeable sheet, and passes through the liquid permeable sheet. Reaches the skin of the skin, compared to before pushing, can further impart a sense of warmth to the wearer, if the sense of warmth is insufficient, the wearer can increase the sense of warmth, the above The warming article is excellent in on-demand property.

[Aspect 3]
The warm-feeling article according to aspect 2, wherein the degree of lipophilicity of the fabric of the warming body is higher than the degree of lipophilicity of the liquid-permeable sheet.

  In the above warming article, the solvent of the warming solution is a lipophilic solvent and the degree of lipophilicity of the fabric constituting the warming body is higher than the degree of lipophilicity of the liquid-permeable sheet. The solution is more likely to be present in the warming body than the liquid permeable sheet, and when the wearer presses the warming article, the warming solution is released from the warming body and moves to the liquid permeable sheet, where the liquid permeates. When the warmth solution passed through the heat-sensitive sheet reaches the skin of the wearer and can give the wearer a further warmth, and when the wearer stops pushing the warming article, the warmth fabric Due to the difference between the lipophilicity of the liquid permeable sheet and the lipophilicity of the liquid-permeable sheet, the warm sensation solution that has reached the wearer's skin gradually returns to the warm sensation body. Therefore, it becomes easier for the wearer to control the warm feeling, and the warm feeling article is excellent in on-demand properties.

[Aspect 4]
The liquid permeable sheet is made of a fabric, the fiber density of the fabric of the warming body is higher than the fiber density of the fabric of the liquid permeable sheet, according to any one of aspects 1 to 3, The warming article of the description.

  In the warm sensation article, the fiber density of the fabric constituting the warm sensation body is higher than the fiber density of the fabric constituting the liquid-permeable sheet. The sensible solution is released, moves to the liquid permeable sheet, and the warm sensible solution that has passed through the liquid permeable sheet reaches the skin of the wearer and gives the wearer an additional warm feeling compared to before pressing. When the wearer stops pushing the warm sensation article, the difference between the fiber density of the fabric constituting the warm sensation body and the fiber density of the fabric constituting the liquid permeable sheet causes the wear on the skin of the wearer. The reached warming solution gradually returns to the warming body. Therefore, it becomes easier for the wearer to control the warm feeling, and the warm feeling article is excellent in on-demand properties.

[Aspect 5]
The warm sensation article according to any one of aspects 1 to 4, wherein the liquid-permeable sheet has a thickness under a load of 30 g / cm ² of 70% or less of a thickness under a load of 3 g / cm ^2. .

  In the warm sensation article, since the thickness under load is within a predetermined range, when the wearer pushes the warm sensation article, the thickness of the liquid-permeable sheet is reduced, and the liquid-permeable sheet is held. The warming solution easily moves to the wearer's skin. Therefore, the above warm feeling article is excellent in on-demand property.

[Aspect 6]
The warm sensation article according to aspect 1 or 2, wherein the liquid permeable sheet is constituted by an apertured film.

  In the warm sensation article, since the liquid-permeable sheet is composed of the apertured film, when the wearer pushes the warm-sensing article, the warm sensation solution is released from the warm sensation body and passed through the liquid permeable sheet. The warming solution can reach the wearer's skin and provide a further warming feeling to the wearer as compared to before the pushing, and when the wearer stops pushing the warming article, The warming solution reaching the skin gradually returns to the warming body. Therefore, it becomes easier for the wearer to control the warm feeling, and the warm feeling article is excellent in on-demand properties.

[Aspect 7]
In the thickness direction of the warming article, the thickness of the region of the warming article that overlaps with the warming body is thicker than the thickness of the area of the warming article that does not overlap with the warming body. 7. The warm sensation article according to any one of 6.

  In the above warming article, the thickness of the region overlapping with the warming body is thicker than the thickness of the region not overlapping with the warming body. The warming solution is easily released from the sensing body. Therefore, it becomes easier for the wearer to control the warm feeling, and the warm feeling article is excellent in on-demand properties.

[Aspect 8]
The warming article according to any one of aspects 1 to 7, wherein the warming article is selected from the group consisting of a sanitary napkin, a panty liner, a disposable diaper, and a shorts-type sanitary napkin.
Since the warming article is selected from the group consisting of a sanitary napkin, a panty liner, a disposable diaper, and a shorts-type sanitary napkin, the warming article exhibits an absorption performance and is worn by the wearer during the warmth sensing time. It is possible to provide a warm feeling to the lower abdomen of the wearer while suppressing itching of the lower abdomen.

Hereinafter, the warm sensation article of the present disclosure will be described in detail.
1 to 4 are diagrams for describing a sanitary napkin 1 as a warming article according to one of the embodiments of the present disclosure (hereinafter, referred to as “first embodiment”). Hereinafter, the “sanitary napkin as a warming article according to the first embodiment” may be simply referred to as a “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 cross-sectional view of the sanitary napkin 1 in a III-III cross section. FIG. 4 is a diagram showing a state of wearing the sanitary napkin 1.

  The sanitary napkin 1 according to the first embodiment has a longitudinal direction L, a width direction W, and a thickness direction T that are orthogonal to each other, and is provided with an absorbent body 3 and a warmer disposed in front of the absorbent body 3 in the longitudinal direction L. And a sense body 5. The sanitary napkin 1 includes, in the absorbent body 3, a liquid-permeable sheet 7 that comes into contact with the wearer's skin when worn, a liquid-impermeable sheet 9 that comes into contact with clothing 19 when worn, the liquid-permeable sheet 7 and the liquid-impermeable sheet. And an absorber 11 disposed between the permeable sheets 9. In the sanitary napkin 1, the liquid permeable sheet 7 which comes into contact with the wearer's skin when worn, the liquid impermeable sheet 9 which comes into contact with the clothing 19 when worn, and the liquid permeable sheet 7 And a heat-sensitive solution holding sheet 13 and a shape holding member 15 arranged between the liquid impermeable sheet 9 and the liquid impermeable sheet 9. The shape holding member 15 is disposed closer to the liquid impermeable sheet 9 than the warm solution holding sheet 13.

  In addition, the liquid permeable sheet 7 in the absorption main body 3 and the liquid permeable sheet 7 in the warm sensation main body 5 are formed of an integral sheet made of a hydrophilic nonwoven fabric treated with a hydrophilizing agent. In addition, the liquid impermeable sheet 9 in the absorption main body 3 and the liquid impermeable sheet 9 in the warm feeling main body 5 are also configured as an integral sheet. Further, the absorber 11 in the absorption main body 3 and the shape retaining member 15 in the warming sensation main body 5 partially overlap each other in the thickness direction T at the overlapping portion 17. The absorber 11 is disposed at a position closer to the liquid permeable sheet 7 than the shape maintaining member 15.

  The sanitary napkin 1 includes an adhesive portion 21 for fixing the sanitary napkin 1 to the clothes 19 of the wearer on both the absorbent main body 3 and the warming main 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 packaging sheet 29 to which releasability has been imparted.

In the unused state, the sanitary napkin 1 extends with the packaging sheet 29 in the longitudinal direction L, extends in the longitudinal direction L, the first longitudinal folding axis F ₁ and the second longitudinal folding axis F _2, and extends in the width direction W. It is folded with the first folding axis F ₃ , the second width folding axis F _{4 in the} width direction, and the third folding axis F ₅ in the width direction as base axes, and forms an individual package (not shown) of the sanitary napkin 1. The first folding axis F _{3 in} the width direction, the second folding axis F _{4 in} the width direction, and the third folding axis F _{5 in} the width direction are arranged in front, at the center, and behind the sanitary napkin 1, respectively.

Further, the first folding axis F ₃ in the width direction overlaps with the warming solution holding sheet 13 (the warming body 31 described later) in the thickness direction T when the sanitary napkin 1 and the packaging sheet 29 are deployed. Are located. The first longitudinal folding axis F ₁ and the second longitudinal folding axis F ₂ do not overlap with the absorbent body 11 in the thickness direction T in the unfolded state of the sanitary napkin 1 and the packaging sheet 29, but the warm solution holding sheet 13 (a warming element 31 described later) so as to overlap in the thickness direction T.

The individual package of the sanitary napkin 1 is such that the sanitary napkin 1 and the wrapping sheet 29 are formed with the first longitudinal axis F ₁ and the second longitudinal axis F ₂ as the base axes and the sanitary napkin 1 inside. Folding in the direction W, and then folding in the longitudinal direction L with the sanitary napkin 1 inside, with the first folding axis F _{3 in the} width direction and the third folding axis F ₅ in the width direction as base axes, and then the second folding axis in the width direction It is formed by folding in the longitudinal direction L with the sanitary napkin 1 inside with F ₄ as the base axis.

  In addition, the sanitary napkin 1 includes a pair of flap portions 23, a seal portion 25, an embossed portion 27, and the like for fixing the sanitary napkin 1 to the clothing 19, but is described in the art. Is omitted.

  The sanitary napkin 1 wears the absorbent body 3 and the warming body 5 so that the excretion opening contact area (not shown) of the absorber 11 of the absorption main body 3 contacts the excretion opening contact area of the wearer. , The warming main body 5, particularly the warming solution holding sheet 13, is arranged at a position corresponding to the lower abdomen of the wearer. In other words, the distance between the excretion opening contact area (not shown) of the absorber 11 of the absorbent main body 3 and the warming solution holding sheet 13 of the warming main body 5 is determined by the distance between the excretion opening of the wearer and the lower abdomen. It is configured to be substantially equal to the distance (distance on the skin surface).

The absorption main body 3 has the same shape as a normal sanitary napkin. The warm sensation solution holding sheet 13 is composed of a hydrophilic nonwoven fabric treated with the same hydrophilizing agent as that used for the liquid permeable sheet 7, and the entire warm sensation solution (shown in FIG. ) Is applied, and the whole of the warm-feeling solution holding sheet 13 constitutes the warming body 31. As shown in FIG. 3, the fiber density of the nonwoven fabric forming the warming body 31 (the warming solution holding sheet 13) is higher than the fiber density of the nonwoven fabric forming the liquid-permeable sheet 7.
Further, the length of the warming solution holding sheet 13 in the width direction W is longer than the length of the absorbing body 11 in the width direction W, and the warming body 31 is wider in the width direction W than the absorbing body 11. It is configured to be arranged in.

  The warming solution comprises a warming agent that activates the TRP channel and a lipophilic solvent. When the sanitary napkin 1 is fixed to the clothes 19 and used, the warming solution contained in the warming body 31 (the warming solution holding sheet 13) passes through the liquid permeable sheet 7 and comes into contact with the wearer's skin. Then, the TRP channel in the warming agent contacting portion of the wearer's skin, 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 warm feeling to the lower abdomen of the wearer, the TRP channel of the warming agent contacting portion of the lower abdominal skin of the wearer that has been in contact with the warming agent is activated, and as a result, the TRP channel is passed through the sympathetic nervous system Therefore, it is expected that heat will be generated from the warming agent contact area, and that the temperature of the warming agent contacting area of the wearer's skin will be increased, thereby warming a part close to the wearer's uterus and causing the wearer's menstrual pain. It is expected to ease.
In addition, by warming a part close to the uterus of the wearer, it is expected that premenstrual syndrome, chilliness, menopause, and the like of the wearer are reduced.

  The inventor of the present application has found that in a warming article containing a warming agent, the time until a desired temperature is felt (heat sensing time) tends to be longer than that of a heating article containing a heating agent (for example, iron powder). Yes, it has been found that the wearer tends to easily feel itching during the heat sensing time. In addition, the inventor of the present application has reported that a heat-sensitive article containing a warming agent has a condition of the skin of the wearer (for example, the dryness of the skin of the wearer) as compared with a heat-generating article containing a heating agent (for example, iron powder). Etc.), there was a difference in how to remember warmth. For example, when the wearer's skin is moistened with moisture, it is easier to maintain a state in which the stratum corneum of the wearer's skin is mainly swollen compared to the case where the wearer's skin is dry, Since the warming solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes), the warming feeling is easily remembered (heat sensing time is short).

  In the sanitary napkin 1 according to the first embodiment, as shown in FIG. 3, the fiber density of the nonwoven fabric forming the warming body 31 (the warming solution holding sheet 13) is the same as that of the nonwoven fabric forming the liquid permeable sheet 7. Since the density is higher than the fiber density, the warming solution is easily held by the warming body 31 (the warming solution holding sheet 13) having a high fiber density in a state where no force or the like is applied. When the wearer pushes the portion of the sanitary napkin 1 overlapping the warming body 31 in the thickness direction T, the warming solution moves to the liquid permeable sheet 7 and then to the wearer's skin. As a result, the part of the wearer's skin that is in contact with the warming agent (warming body 31) of the warming agent easily feels warmth.

  Next, when the wearer stops pushing the portion overlapping the warming element 31 of the sanitary napkin 1 in the thickness direction T, the warming solution is removed from the liquid-permeable sheet 7 having a low fiber density to obtain a fiber having a low fiber density. It is easy to return to the high warming body 31 (warming solution holding sheet 13). As a result, the portion of the wearer's skin that is in contact with the warming sensation agent is less likely to feel excessive warmth.

  As shown in FIG. 3, the thickness of the region of the sanitary napkin 1 overlapping the warming body 31 is greater than the thickness of the region of the sanitary napkin 1 not overlapping the warming body 31. By doing so, it becomes easier for the wearer to press in the area overlapping with the warming body 31, and as a result, the warming solution is easily released from the warming body 31 and the wearer can more easily control the warming feeling.

  FIG. 5 is a diagram for explaining a shorts-type sanitary napkin 101 as a warming article according to another embodiment of the present disclosure (hereinafter, referred to as “second embodiment”), showing a wearing state. is there. Hereinafter, the “shorts-type sanitary napkin as a warming article according to the second embodiment” may be simply referred to as “shorts-type sanitary napkin according to the second embodiment”.

  The shorts type sanitary napkin 101 according to the second embodiment includes a shorts section 103 and an absorbent article section 105 arranged on the inner surface of the shorts section 103. The absorbent article section 105 includes, in the absorbent main body 107, a liquid-permeable sheet (not shown) that comes into contact with the wearer's skin when worn, a liquid-impermeable sheet (not shown) that comes into contact with the shorts section 103, And an absorber 111 disposed therebetween. Further, the absorbent article section 105 includes a liquid-permeable sheet (not shown) that comes into contact with the wearer's skin when worn, and a liquid-impermeable sheet (not shown) that comes into contact with the shorts section 103 in the warm body 109. ), And a warm solution holding sheet 113 and a shape holding member 115 disposed therebetween.

  The liquid permeable sheet (not shown) in the absorbent main body 107 and the liquid permeable sheet (not shown) in the warm sensation main body 109 are integrally formed of a hydrophilic nonwoven fabric treated with a hydrophilizing agent. It is composed of sheets. Further, the liquid impermeable sheet (not shown) in the absorption main body 107 and the liquid impermeable sheet (not shown) in the warm feeling main body 109 are also formed as an integral sheet.

  The warming solution holding sheet 113 of the warming body 109 is made of a lipophilic nonwoven fabric treated with a lipophilic agent. The warm-sensing solution holding sheet 113 is coated with a warm-sensing solution (not shown) containing a warming agent for activating a TRP channel and a lipophilic solvent. Constitute the warming body 117 as a whole.

  As with the sanitary napkin 1 according to the first embodiment, the fiber density of the nonwoven fabric forming the warming body 117 (warming solution holding sheet 113) is similar to that of the nonwoven fabric forming the liquid permeable sheet (not shown). Higher than. In addition, the warming solution contains a lipophilic solvent, the warming body 117 is composed of a lipophilic nonwoven fabric, and the liquid-permeable sheet (not shown) is composed of a hydrophilic nonwoven fabric. The degree of lipophilicity of the sensation body 117 is higher than the lipophilicity of a liquid-permeable sheet (not shown).

  Therefore, when no force or the like is applied, the warming solution containing the lipophilic solvent is easily held by the warming body 117 (the warming solution holding sheet 113) having a high fiber density and a high lipophilicity. When the wearer pushes the portion of the shorts-type sanitary napkin 101 overlapping with the warming body 117 in the thickness direction (not shown) of the shorts-type sanitary napkin 101, the warming solution is applied to the liquid-permeable sheet ( (Not shown) and then to the wearer's skin. As a result, the warming agent contact portion that has been in contact with the warming agent (warming body 117) on the wearer's skin becomes easier to remember the warmth.

  Next, when the wearer stops pushing the portion overlapping the warming body 117 of the shorts-type sanitary napkin 101 in the thickness direction (not shown) of the shorts-type sanitary napkin 101, the warm-sensing solution becomes From the liquid permeable sheet (not shown) having a low fiber density and a low lipophilicity, it is easy to return to the warming body 117 (the warm solution holding sheet 113) having a high fiber density and a high lipophilicity. As a result, the portion of the wearer's skin that is in contact with the warming sensation agent is less likely to feel excessive warmth.

  By imparting a warm feeling to the lower abdomen of the wearer, the TRP channel of the warming agent contacting portion of the lower abdominal skin of the wearer that has been in contact with the warming agent is activated, and as a result, the TRP channel is passed through the sympathetic nervous system. Therefore, it is expected that heat will be generated from the warming agent contact area, and that the temperature of the warming agent contacting area of the wearer's skin will be increased, thereby warming a part close to the wearer's uterus and causing the wearer's menstrual pain. It is expected to ease. In addition, it is expected that premenstrual syndrome, chilliness, menopause, and the like of the wearer are reduced.

  FIG. 6 is a diagram illustrating a disposable diaper 201 for adults as a warming article according to still another embodiment of the present disclosure (hereinafter, referred to as “third embodiment”), showing a worn state. FIG. Hereinafter, the “disposable diaper as a warming article according to the third embodiment” may be simply referred to as “a disposable diaper according to the third embodiment”.

  The disposable diaper 201 according to the third embodiment is disposed between the liquid-permeable sheet 203 that contacts the wearer's skin, the liquid-impermeable sheet 205, and the liquid-permeable sheet 203 and the liquid-impermeable sheet 205. An absorbent body 207 and a warm solution holding sheet 209 disposed in front of the absorbent body 207 and between the liquid permeable sheet 203 and the liquid impermeable sheet 205 are provided. The liquid permeable sheet 203 is made of a hydrophilic nonwoven fabric treated with a hydrophilic agent.

The warm solution holding sheet 209 is arranged so as to be arranged at a position corresponding to the lower abdomen of the wearer when the disposable diaper 201 is worn.
The warming solution holding sheet 209 is made of a lipophilic nonwoven fabric treated with a lipophilic agent, and is coated with a warming solution (not shown). The whole of the holding sheet 209 forms the warming body 211. The warming solution comprises a warming agent that activates the TRP channel and a lipophilic solvent.
Note that the nonwoven fabric forming the warming element 211 (warming solution holding sheet 209) and the liquid permeable sheet 203 are formed of the same nonwoven fabric, and their fiber densities are the same.

  When no force or the like is applied, the warming solution containing the lipophilic solvent is easily held by the warming body 211 (the warming solution holding sheet 209) having high lipophilicity. When the wearer pushes the portion of the disposable diaper 201 overlapping the warming body 211 in the thickness direction (not shown) of the disposable diaper 201, the warming solution moves to the liquid-permeable sheet 203, Transfer to the wearer's skin. As a result, the warming agent contact portion that has been in contact with the warming agent on the skin of the wearer can easily feel warmth.

  Next, when the wearer stops pushing the portion overlapping the warming body 211 of the disposable diaper 201 in the thickness direction (not shown) of the disposable diaper 201, the warming solution becomes a liquid having low lipophilicity. It is easy to return from the permeable sheet (not shown) to the warming body 211 (the warming solution holding sheet 209) having high lipophilicity. As a result, the portion of the wearer's skin that is in contact with the warming sensation agent is less likely to feel excessive warmth.

  By imparting a warm feeling to the lower abdomen of the wearer, the TRP channel of the warming agent contacting portion of the lower abdominal skin of the wearer that has been in contact with the warming agent is activated, and as a result, the TRP channel is passed through the sympathetic nervous system. As a result, heat is generated from the warming sensate contacting part, and it is expected that the temperature of the wearer's skin at the warming sensate contacting part is increased.

As a result, when the wearer of the disposable diaper 201 is a woman, (i) discharging prostaglandin, which is a cause of menstrual pain, relaxing muscles such as uterine muscle, and alleviating menstrual pain; ii) It is expected to promote blood circulation, promote the flow of lymph, discharge waste products, improve coldness, burn fat, and (iii) improve immunity.
If the wearer of disposable diaper 201 is a male, (i) excrete prostaglandins, relax muscles and relieve pain, (ii) promote blood circulation, promote lymphatic flow, It is expected to discharge things, improve cooling, burn fat, and (iii) improve immunity.

  7 to 10 are diagrams for explaining a warming sheet 301 as a warming article according to still another embodiment of the present disclosure (hereinafter, referred to as “fourth embodiment”). Note that, hereinafter, the “heat-sensitive sheet as a warm-feeling article according to the fourth embodiment” may be simply referred to as a “heat-sensitive sheet according to the fourth embodiment”. Specifically, FIG. 7 is a perspective view of the individual wrapping body 303 of the thermal sensation sheet in which the thermal sensation sheet 301 according to the fourth embodiment is individually wrapped. FIG. 8 is a perspective view of a warm sheet 301 according to the fourth embodiment. FIG. 9 is an exploded perspective view of a warm sheet 301 according to the fourth embodiment. FIG. 10 is a diagram showing a wearing state of the warm sheet 301 according to the fourth embodiment. Hereinafter, the “individual package of the thermal sensation sheet” may be simply referred to as “individual package”.

  The warm sensation sheet 301 according to the fourth embodiment includes a liquid permeable sheet 307 in contact with the wearer's skin, a warm solution holding sheet 309, a liquid impermeable sheet 311 in contact with clothing, and a liquid impermeable sheet. An adhesive portion 313 for fixing the liquid impermeable sheet 311 to the clothing 321 and a release sheet 315 for temporarily fixing the adhesive portion 313 are provided in that order, and the longitudinal direction L orthogonal to each other is provided. , A width direction W and a thickness direction T. The liquid permeable sheet 307 is made of a nonwoven fabric having a hydrophilic property and treated with a hydrophilic agent, and has a skin contact surface 331 and a non-skin contact surface 333.

  The warm sensation solution holding sheet 309 is made of a nonwoven fabric having a hydrophilic property, which is obtained by treating the liquid permeable sheet 307 and treating with a hydrophilizing agent. And a warming solution (not shown) containing water as a hydrophilic solvent is applied, and the whole warming solution holding sheet 309 constitutes the warming body 341.

Warming sheet 301, the center of the longitudinal direction L, comprises a Orijiku F ₆ extending parallel to the width direction W. In the individual wrapping body 303, the warm sensation sheet 301 is folded around the folding axis F ₆ with the skin contact surface 331 of the liquid permeable sheet 307 inside, and is wrapped in the wrapping sheet 305.

The adhesive portion 313 includes a plurality of adhesive portions 314. Each of the plurality of adhesive portions 314 extends in the width direction W, and reaches both ends in the width direction W of the warm sensation sheet 301. The plurality of adhesive portions 314 are arranged at predetermined intervals in the longitudinal direction L.
The release sheet 315 has the same outer edge shape as the liquid impermeable sheet 311, and is arranged so as to cover the entire adhesive portion 313 (the plurality of adhesive portion portions 314).

As shown in FIG. 7, the warm sensation sheet 301 is wrapped in a wrapping sheet 305 in a state of being folded in two, and an individual wrapping body 303 is formed. More specifically, the individual wrapping body 303 is formed by folding the warm sensation sheet 301 folded in two with the skin contact surface 331 of the liquid permeable sheet 7 inside on the folding axis F ₆ as a base axis. And is provided by providing a seal portion 335 on the periphery of the two packaging sheets 305.

  When using the warm sheet 301, the wearer opens the individual package 303 from the cutout 337 of the individual package 303, takes out the warm sheet 301 from the individual package 303, and removes the peel sheet from the warm sheet 301. 315 is peeled off. Next, the wearer fixes the adhesive portion 313 of the warming sheet 301 to the clothing 321, specifically, the inner surface of the shorts, and with the skin contact surface 331 of the warming sheet 301 in contact with the wearer's skin. , A warm sheet 301 is used.

  As in the sanitary napkin 1 according to the first embodiment, the fiber density of the nonwoven fabric forming the warming body 341 (the warming solution holding sheet 309) is higher than the fiber density of the nonwoven fabric forming the liquid permeable sheet 307.

  When no force or the like is applied, a warming solution containing water as a hydrophilic solvent is easily held by the warming body 341 (warmth solution holding sheet 309) having a high fiber density. When the wearer pushes the warming sheet 301 (the warming body 341) in the thickness direction T, the warming solution moves to the liquid-permeable sheet 307 and then to the wearer's skin. As a result, the part of the wearer's skin that has been in contact with the warming agent (warming body 341) of the wearer's skin becomes easier to remember the warmth.

  Next, when the wearer stops pushing the warming sheet 301 (the warming body 341) in the thickness direction T, the warming solution is changed from the liquid permeable sheet 307 having a low fiber density to the warming feeling having a high fiber density. It is easy to return to the body 341 (warm solution holding sheet 309). As a result, the portion of the wearer's skin that is in contact with the warming sensation agent is less likely to feel excessive warmth.

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

  The warming agent is preferably a plant-derived compound from the viewpoint of a sense of security for the wearer. Examples of the warming agent include capsicoside, capsaicin, capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, nonivamide, etc.), capsanthin, benzyl nicotinate, β-butoxyethyl nicotinate, N-acyl Vanillamide, vanillyl nonanoate, polyhydric alcohol, pepper powder, pepper tincture, pepper extract, vanillyl ether nonanoate, vanillyl alcohol alkyl ether derivative (for example, vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, Vanillyl hexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratrial alcohol derivative, substituted benzyl alcohol derivative , Substituted benzyl alcohol alkyl ethers, vanillin propylene glycol acetal, ethyl vanillin propylene glycol acetal, ginger extract, ginger oil, gingerol, zingerone, hesperidin, and pyrrolidone carboxylic acid, as well as any combination thereof.

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

The solvent is not particularly limited as long as it can contain the warming agent, and examples thereof include a lipophilic solvent and a hydrophilic solvent. The solvent can dissolve or disperse the warming agent, for example.
Examples of the lipophilic solvent include oils and fats, for example, natural oils (for example, fatty acid esters such as triglycerides, coconut oil, linseed oil, and the like), and hydrocarbons (for example, paraffin, for example, liquid paraffin).
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 caprylic alcohol, lauryl alcohol, and myristyl alcohol.

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

  The warming solution preferably contains the warming agent in an amount of 0.0001 to 5.0% by mass, more preferably 0.0005 to 3.0% by mass, and still more preferably 0.1 to 1.0% by mass. And still more preferably, it contains 0.3 to 0.7% by mass. This is from the viewpoint of the warming effect.

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

  Examples of the at least one other component include a cooling sensation agent. Examples of the cooling sensation agent include those that activate a TRP channel, and examples of the cooling sensation agent include an agonist for the TRPM8 receptor, an agonist for the TRPA1 receptor, and an agonist for the TRPM8 receptor. Is preferred.

Examples of the cooling sensation agent include menthol (for example, 1-menthol) and its derivatives (for example, menthyl lactate, menthyl glyceryl ether, for example, 1-menthyl glyceryl ether), methyl salicylate, camphor, and plants (for example, mint, Essential oil derived from eucalyptus).
The inventor of the present application has found that, when the warming solution further includes a cooling agent for activating the TRP channel in addition to the warming agent for activating the TRP channel, the wearer may be able to perform warmth during the above-mentioned warming sensing time. It has been found that itching is difficult to remember in the area in contact with the sensitive solution and in the surrounding area.

  In the warm sensation article of the present disclosure, when the warm sensation solution further includes a cooling sensation agent, the warm sensation solution preferably contains the cooling sensation agent in an amount of 0.0001 to 5.0% by mass, more preferably 0.0005% by mass. To 3.0% by mass, more preferably 0.1 to 1.0% by mass, and even more preferably 0.3 to 0.7% by mass. This is from the viewpoint that it is difficult for the wearer to feel itching during the time of sensing the warmth and it is difficult for the wearer to excessively sense the cold.

  In the warm sensation article of the present disclosure, when the warm sensation solution further contains a cooling sensation agent, the warm sensation solution contains the warming sensation agent and the cooling sensation agent, preferably 20: 1 to 1:10, more preferably Comprises from 10: 1 to 1: 5, and more preferably from 2: 1 to 1: 1 by weight. This is because the wearer is less likely to feel itching during the heat sensing time, less likely to feel a cold sensation, and easier to remember a warm feeling.

  The at least one other component includes a cooling agent, for example, a cooling agent for lowering the ambient temperature by heat of vaporization, and the cooling agent includes, for example, alcohols, for example, methanol and ethanol.

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

The at least one other component includes, for example, a vitamin such as a natural vitamin or a synthetic vitamin. 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 B ₁₂ And vitamin C.
Examples of the above-mentioned vitamins include fat-soluble vitamins, for example, vitamin A group, vitamin D group, vitamin E group, vitamin K group and the like.
The vitamins also include their derivatives.

  The at least one other component includes, for example, amino acids such as alanine, arginine, lysine, histidine, proline, hydroxyproline and the like, as well as peptides.

The at least one other component includes, for example, zeolites, for example, natural zeolites, for example, zeolites, chabazite, pyroxene, natrolite, stilovite, and somosonite, and synthetic zeolites.
Examples of the at least one other component include cholesterol, hyaluronic acid, lecithin, ceramide, placenta, collagen, elastin, squalane, petrolatum, trehalose, and the like.

Examples of the at least one other component include drugs, for example, skin astringents, anti-acne agents, anti-wrinkle agents, anti-cellulite agents, whitening agents, antibacterial agents, antifungal agents and the like.
Examples of the skin astringent include oil-soluble skin astringents, such as zinc oxide, aluminum sulfate, and tannic acid, and oil-soluble polyphenols. As the above oil-soluble polyphenols, natural oil-soluble polyphenols, for example, psyllium extract, Hypericum perforatum extract, lycopodium extract, chamomile extract, burdock extract, salvia extract, linden extract, medusa extract, birch extract, horsetail extract, sage extract, salvia extract , Euchegurumi extract, hibiscus extract, loquat leaf extract, bodaille extract, hop extract, maronier extract, yoquinin extract and the like.

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

Examples of the anti-cellulite agent include xanthine compounds such as aminophylline, caffeine, theophylline, and theobromine.
Examples of the whitening agent include niacinamide, kojic acid, arbutin, glucosamine and derivatives, phytosterol derivatives, ascorbic acid and derivatives thereof, and mulberry extract and placenta extract.

In addition, examples of the at least one other component include an anti-inflammatory component, a pH adjuster, an antibacterial agent, a humectant, a fragrance, a pigment, a dye, a pigment, a plant extract, and the like. Examples of the anti-inflammatory component include, for example, naturally occurring anti-inflammatory agents, such as buttons, ogon, hypericum, chamomile, licorice, sycamore, mugwort, perilla extract and the like, and synthetic anti-inflammatory agents such as allantoin, dipotassium glycyrrhizinate and the like. Can be
Examples of the pH adjuster include those for keeping the skin weakly acidic, such as malic acid, succinic acid, citric acid, tartaric acid, and lactic acid.
Examples of the pigment include titanium oxide.

  The warming article of the present disclosure, particularly, the warming solution preferably does not contain a heating agent. By doing so, the wearer is less likely to burn at low temperatures. In addition, since the heat-sensitive article itself does not generate heat, the adhesive portion for clothing and fixing the heat-sensitive article to the skin is unlikely to soften, and the use of the heat-sensitive article is finished, and the heat-sensitive article is worn, the wearer's skin, etc. The adhesive part of the warm-sensing article is less likely to remain on clothes, skin, and the like when detached from the device.

  The heat generating agent is not particularly limited as long as the heat generating agent itself generates heat. For example, heat of oxidation of metal powder (for example, iron powder), heat of neutralization of acid and alkali, heat of hydration of inorganic salt, and the like. And the like utilizing chemical energy.

In the warm sensation article of the present disclosure, the liquid-permeable sheet is not particularly limited as long as it has liquid permeability, and is composed of, for example, a fabric (for example, a nonwoven fabric, a woven fabric, or a knitted fabric), an apertured film, or the like. . The fabric is preferably a nonwoven fabric from the viewpoint of ease of manufacturing the warm-sensing article.
Examples of the nonwoven fabric include an air-laid pulp, an air-through nonwoven fabric, a spunbonded nonwoven fabric, a point-bonded nonwoven fabric, a spunlace nonwoven fabric, a needle-punched nonwoven fabric, a meltblown nonwoven fabric, and a combination thereof (for example, SMS or the like).

Examples of the fibers constituting the fabric include natural fibers, synthetic fibers, and semi-synthetic fibers. The natural fibers include pulp fibers and regenerated cellulose fibers.
Examples of the regenerated cellulose fibers include rayon fibers, for example, viscose rayon obtained from viscose, polynosic and modal, cuprammonium rayon fibers obtained from a cuprammonium salt solution of cellulose (also referred to as “cupra”); organic compounds And lyocell and Tencel, which are obtained by an organic solvent spinning method using an organic solvent that is a mixed solution of water and water and do not pass through a cellulose derivative.
The semi-synthetic fibers include semi-synthetic cellulose fibers, for example, acetate fibers, for example, triacetate fibers and diacetate fibers.

  Examples of the synthetic fiber include a heat-fusible fiber such as a polyolefin-based polymer such as polyethylene or polypropylene; a polyester-based polymer such as terephthalate-based polymer such as polyethylene terephthalate (PET), polybutylene terephthalate, and polypliers. Fibers formed from lentephthalate; polyamide-based polymers, for example, nylon 6 or nylon 6,6; acrylic polymers; polyacrylonitrile-based polymers; modified products thereof, or combinations thereof.

  Examples of the aperture film include a polyethylene or polypropylene sheet provided with a plurality of apertures.

  In the warm sensation article of the present disclosure, the liquid permeable sheet can have hydrophilicity or lipophilicity from the viewpoint of improving the on-demand property of the warm sensation article. The liquid-permeable sheet having hydrophilicity is obtained by treating a material constituting the liquid-permeable sheet with a hydrophilic agent known in the art (for example, applying the hydrophilic agent, kneading the hydrophilic agent). Can be formed. Examples of the above-mentioned hydrophilizing agent include an alkyl phosphate ester salt and an alkyl phosphate metal salt. Examples of the hydrophilizing agent include, for example, a mixture of an alkyl phosphate ester salt having 10 to 30 carbon atoms and a betaine compound having 10 to 30 carbon atoms, a sulfate salt or a sulfonate salt, and a mixture of an alkyl phosphate ester salt and a polyphosphate. Examples thereof include a mixture with an ether-modified silicone.

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

In the warm sensation article of the present disclosure, when the liquid permeable sheet is a fabric, the liquid permeable sheet is preferably 0.005 to 0.060 g / cm from the viewpoint of improving the on-demand property of the warm sensation article. ^3, more preferably 0.010~0.050g / cm ^3, and more preferably has a fiber density of 0.020~0.040g / cm ^3.
The method for measuring the fiber density will be described later.

In the warm sensation article according to the present disclosure, when the liquid-permeable sheet is a fabric, the liquid-permeable sheet preferably has a thickness under a load of 30 g / cm ² of 3 g / cm ^2. Is 70% or less, more preferably 60% or less, and even more preferably 50% or less. By doing so, when the wearer pushes the warming article in the thickness direction, the liquid-permeable sheet is likely to be crushed, and the warming solution held by the liquid-permeable sheet is brought into contact with the wearer's skin. Therefore, the on-demand property of the warm sensation article is easily improved.

In the warm sensation article of the present disclosure, when the liquid-permeable sheet is a fabric, the liquid-permeable sheet preferably has a thickness under a load of 10 g / cm ² of 3 g / cm ^2. Is at least 70%, more preferably at least 80%, and even more preferably at least 90%. By doing so, the liquid-permeable sheet is less likely to be crushed by the pressure of clothing, etc., and the pressure makes it difficult to bring the warming solution held by the liquid-permeable sheet into contact with the wearer's skin. The on-demand property is easily improved.

In the present specification, the thickness under a load of 30 g / cm ² , 10 g / cm ² and 3 g / cm ² is measured as follows.
(1) FS-60DS manufactured by Daiei Kagaku Seiki Seisaku-Sho, Ltd. is prepared in a constant temperature and humidity chamber with a temperature of 20 ± 5 ° C. and humidity of 65 ± 5% RH, and a liquid permeable sheet is placed in the constant temperature and humidity chamber. (Hereinafter referred to as "sample") for 24 hours.
(2) The thickness of the sample is measured at 10 points at different locations, and the average value thereof is adopted as the thickness of the sample.
The load is adjusted by changing the contact point. Under the condition of load: 3 g / cm ^2, a probe having a diameter of 44 mm was used. Under the condition of load: 10 g / cm ² , the probe of 25 mm in diameter was used. Under the condition of load: 30 g / cm ² , the diameter was measured. : A 14 mm measuring element is used.

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

In the warm sensation article of the present disclosure, the liquid-permeable sheet is a material selected from the group consisting of a heat-generating material, a heat-insulating material, and a hygroscopic material, and any combination thereof (hereinafter, simply referred to as a “functional material”). (Which may be referred to as "a").
When the liquid-permeable sheet contains the above-mentioned predetermined functional material, the horny layer of the wearer's skin mainly swells easily due to moisture of the wearer's transpiration, sweat, etc. It becomes easier to reach TRP channels mainly present in cells (keratinocytes). As a result, the heat sensing time is shortened, and the wearer is less likely to feel itching during the heat sensing time.

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

Examples of the moisture-absorbing and heat-generating material include acrylate-based materials and wool. Examples of the heat storage material include a material containing a substance that absorbs sunlight and converts it into heat energy (such as zirconium carbide), and a carbon material. Examples of the far-infrared radiation material include a material containing a ceramic that emits far-infrared rays when heated.
Examples of the heat insulating material include hollow fibers and feathers.
Examples of the hygroscopic material include the above-described natural fibers and semi-synthetic fibers.

Specifically, in the warm sensation article of the present disclosure, when the liquid-permeable sheet contains a moisture-absorbing and heat-generating material, for example, moisture-absorbing and heat-generating fibers, moisture such as transpiration from the wearer's skin and sweat is provided. Then, the moisture-absorbing and heat-generating fibers generate heat, and the wearer easily sweats. Next, mainly the stratum corneum of the wearer's skin swells due to the moisture of the sweat of the wearer, and the warming solution easily reaches the TRP channels mainly present in keratinocytes (keratinocytes). As a result, the heat sensing time is shortened, and the wearer is less likely to feel itching during the heat sensing time.
In addition, even when the liquid-permeable sheet contains a heat storage material or a far-infrared radiating material, the wearer easily sweats, and the moisture of the wearer's sweat mainly swells the stratum corneum of the wearer's skin. In addition, the warming solution can easily reach TRP channels mainly present in keratinocytes (keratinocytes). As a result, the heat sensing time is shortened, and the wearer is less likely to feel itching during the heat sensing time.

In the warm sensation article of the present disclosure, when the liquid-permeable sheet includes a heat insulating material, the wearer easily sweats, and the moisture of the sweat of the wearer swells mainly the stratum corneum of the wearer's skin. Then, the warming solution can easily reach the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the heat sensing time is shortened, and the wearer is less likely to feel itching during the heat sensing time.
In the warm sensation article of the present disclosure, when the liquid-permeable sheet contains a moisture-absorbing material, the moisture-absorbing material retains moisture such as transpiration of the wearer, sweat, etc., and mainly forms the stratum corneum of the skin of the wearer. Swelling is facilitated, and the warming solution easily reaches TRP channels mainly present in keratinocytes (keratinocytes). As a result, the heat sensing time is shortened, and the wearer is less likely to feel itching during the heat sensing time.

  In the warm sensation article of the present disclosure, the material of the liquid impermeable sheet is not particularly limited as long as it has liquid impermeability. For example, a film, for example, a moisture permeable film composed of polyethylene, polypropylene, or the like , A non-woven fabric such as a non-permeable film, a spun bond or a spun lace and a non-woven fabric, and a multi-layer non-woven fabric such as an SMS.

In the warm sensation article of the present disclosure, it is preferable that the liquid impermeable sheet is composed of a moisture impermeable film. By doing so, moisture, water vapor, and the like present in the warming body and the wearer's skin in contact with the warming body are less likely to pass through the liquid impermeable sheet and be discharged to the outside of the warming article, thereby reducing wear of the wearer. Mainly, the horny layer of the skin is easily kept in a swollen state, and the warming solution easily reaches the TRP channel mainly present in keratinocytes (keratinocytes). As a result, the heat sensing time is shortened, and the wearer is less likely to feel itching during the heat sensing time.
The liquid impermeable sheet is preferably 10 to 50 g / m ^2, and more preferably has a basis weight of 15 to 30 g / m ^2.

The warming article of the present disclosure can include an additional member, for example, an intermediate sheet (for example, a warming solution holding sheet), an absorber, and the like, between the liquid-permeable sheet and the liquid-impermeable sheet.
Examples of the material for the intermediate sheet include those listed as materials for the liquid-permeable sheet. When the material of the intermediate sheet is selected from cloth and contains a warming solution, the intermediate sheet can constitute a warming solution holding sheet and a warming body.

  When the intermediate sheet forms the warming solution holding sheet and the warming body, the intermediate sheet may include the warming solution. When the intermediate sheet is used as a warming solution holding sheet and the solvent of the warming solution is a lipophilic solvent, the intermediate sheet is a cloth formed of synthetic fibers, for example, a nonwoven fabric, a woven fabric, or a knitted fabric. And the like, for example, a nonwoven fabric formed from synthetic fibers. In the case where the intermediate sheet is used as a warming solution holding sheet, and the solvent of the warming solution is a hydrophilic solvent, the intermediate sheet is made of a cellulose fiber-based fabric, for example, a nonwoven fabric or a woven fabric. It may be a cloth, a knitted fabric, or the like, and may be, for example, a tissue or an air-laid pulp made of pulp fibers.

  When the warm-sensing article of the present disclosure further includes an intermediate sheet and the intermediate sheet constitutes a warm-solution holding sheet (warming body), the intermediate sheet is used from the viewpoint of improving the on-demand property of the warm-sensing article. It can be hydrophilic or lipophilic. The intermediate sheet having hydrophilicity is formed by treating the material constituting the intermediate sheet with a hydrophilic agent known in the art (for example, applying the hydrophilic agent, kneading the hydrophilic agent). sell. Examples of the hydrophilizing agent include the hydrophilizing agents listed in the description of the liquid-permeable sheet.

  As the intermediate sheet having lipophilicity, a material constituting the intermediate sheet is treated with a lipophilic agent known in the art (for example, by applying a hydrophilic agent or kneading a hydrophilic agent). Can be formed. Examples of the lipophilic agent include the lipophilic agents listed in the description of the liquid-permeable sheet.

When the warm-sensing article of the present disclosure further includes an intermediate sheet and the intermediate sheet constitutes a warm-solution holding sheet (warming body), the intermediate sheet is used from the viewpoint of improving the on-demand property of the warm-sensing article. preferably 0.010~0.500g / cm ^3, more preferably 0.020~0.300g / cm ^3, and more preferably has a fiber density of 0.030~0.100g / cm ^3.
The intermediate sheet is preferably 10 to 200 g / m ^2, and more preferably has a basis weight of 15~150g / m ^2.

In the warm sensation article of the present disclosure, when the liquid-permeable sheet is a fabric, the liquid-permeable sheet is preferably at least 0.005 g / cm ³ , more preferably 0.010 g / cm ³ , than the intermediate sheet. or more, more preferably 0.015 g / cm ³ or more, more preferably 0.020 g / cm ³ or more, more preferably 0.025 g / cm ³ or more, and more preferably smaller by the difference between the 0.030 g / cm ³ or more Has a fiber density. By doing so, in a state where no force or the like is applied, the warming solution is easily held by the warming body having a high fiber density, and when the wearer pushes the warming article, the warming solution becomes liquid permeable. Move to the seat and then to the wearer's skin.

Further, in the warm sensation article of the present disclosure, when the liquid-permeable sheet is a fabric, the liquid-permeable sheet is preferably 0.440 g / cm ³ or less, more preferably 0.300 g / cm ³ , than the intermediate sheet. cm ³ or less, more preferably 0.250 g / cm ³ or less, even more preferably 0.200 g / cm ³ or less, even more preferably 0.150 g / cm ³ or less, even more preferably 0.100 g / cm ³ or less And still more preferably 0.060 g / cm ³ or less, even more preferably 0.045 g / cm ³ or less, still more preferably 0.040 g / cm ³ or less, and still more preferably 0.035 g / cm ³ or less. It has a small fiber density by difference. By doing so, when the wearer pushes the warm-sensing article, the warm-sensing solution moves to the liquid-permeable sheet, and then easily moves to the wearer's skin.

The fiber density of the liquid-permeable sheet and the intermediate sheet is measured as follows.
(1) Temperature: 20 ± 5 ° C. and humidity: 65 ± 5% RH, FS-60DS manufactured by Daiei Kagaku Seiki Seisakusho [measurement surface: 44 mm (diameter), measurement pressure: 3 g / cm ² ] is prepared, and the liquid-permeable sheet and / or the intermediate sheet (hereinafter, referred to as “sample”) is left to stand in the same temperature and humidity chamber for 24 hours.
(2) From the sample described above, 10 pieces of sample having a size of 0.1 mx 0.1 m are collected.
(3) The mass of each sample piece was measured, and then the mass (g) of each sample piece was divided by the area (m ² ) of each sample piece to obtain a basis weight: bw (g / g / m ² ) is calculated.

(4) Using FS-60DS, five different parts of each sample piece were pressurized, the thickness of each part after 10 seconds of pressurization was measured, and the average value of the five measured values was used for each sample piece. Thickness: t (m).
(5) In each sample piece, the basis weight of the sample piece: bw (g / m ² ) is divided by the thickness of the sample piece: t (m), and the unit is adjusted to adjust the fiber density of each sample piece. : Fd (g / cm ³ ) is calculated.
(6) The average value of the fiber density: fd (g / cm ³ ) of a total of 10 sample pieces is calculated, and the average value is adopted as the fiber density: FD (g / cm ³ ).

In the warming article of the present disclosure, when the solvent of the warming solution is a lipophilic solvent, and the intermediate sheet constitutes a warming solution holding sheet (warming body), the lipophilicity of the intermediate sheet is low. It is preferably higher than the degree of lipophilicity of the liquid-permeable sheet. This is from the viewpoint of improving the on-demand property of the warm feeling article.
Further, in the warm sensation article of the present disclosure, when the solvent of the warm sensation solution is a hydrophilic solvent, and the intermediate sheet forms a warm sensation solution holding sheet (warm body), It is preferable that the degree is higher than the degree of hydrophilicity of the liquid-permeable sheet. This is from the viewpoint of improving the on-demand property of the warm feeling article.

The level of the lipophilicity and the level of the hydrophilicity are evaluated as follows.
(1) Prepare an automatic contact angle meter MCA-J of Kyowa Interface Chemical Co., Ltd. in a constant temperature / humidity chamber with a temperature: 20 ± 5 ° C. and humidity: 65 ± 5% RH. The permeable sheet and the intermediate sheet (hereinafter, referred to as “sample”) are allowed to stand for 24 hours.
(2) From the ink jet of MCA-J, a minute droplet (20 pL) of deionized water is applied to the surface of the sample to be measured (the surface of the fiber when the sample is a fabric, the surface of the sheet when the sample is a sheet). ), And the state of the minute droplet is recorded over time.
(3) Image analysis is performed on the image immediately after the microdroplets have adhered to the surface of the sample, and the contact angle of the microdroplets to the sample surface is calculated.
(4) As the contact angle, an average value of the measured values of a total of 20 places of 20 different fibers is adopted.
(5) A sample having a large contact angle is a sample having a high lipophilicity (a sample having a low hydrophilicity), and a sample having a small contact angle is a sample having a low lipophilicity (a sample having a high hydrophilicity).

  As the above-mentioned absorber, the core wrap covers the absorbent core containing the pulp fiber and the polymer absorbent, and the core wrap covers the absorbent core containing the polymer absorbent or the absorbent core composed of the polymer absorbent. And the like. Examples of the core wrap include the above-described intermediate sheet. Absorbent articles are mentioned as warming articles provided with the above-mentioned absorber.

  The warming article of the present disclosure can be provided with an adhesive portion that fixes the warming article to clothes, the skin of a wearer, or the like, and the adhesive portion is a hot-melt adhesive, for example, styrene-ethylene- Pressure-sensitive type based mainly on rubbers such as butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS) and styrene-isoprene-styrene (SIS), or based on olefins such as linear low-density polyethylene Adhesives or heat-sensitive adhesives; water-soluble polymers (eg, polyvinyl alcohol, carboxymethyl cellulose, gelatin, etc.) or water-swellable polymers (eg, polyvinyl acetate, sodium polyacrylate, etc.); No.

  It is preferable that the warm sensation article of the present disclosure is packaged with a packaging sheet before use. This is from the viewpoint of protecting the warming solution held by the warming article, from the viewpoint of not leaking the warming solution held by the warming article to the outside. For example, the warming article of the present disclosure is preferably a package in which one or a plurality of warming articles is packaged with a packaging sheet, and is an individual package in which one warming article is packaged with a packaging sheet. Is more preferable.

  Examples of the material of the packaging sheet include polyolefin-based polymers, for example, polyethylene and polypropylene. From the viewpoint of enhancing the airtightness of the individual package, the packaging sheet may include an airtight layer, and as a material of the airtight layer, for example, ethylene vinyl alcohol copolymer, vinylidene chloride-based polymer, for example, vinylidene methyl chloride Acrylic copolymers, polyvinyl alcohols, nylons such as nylon 6, aluminum foil, and base films (eg, polyethylene terephthalate) on which alumina, silica, or the like is vapor-deposited.

The warming article of the present disclosure is not particularly limited as long as it contains a warming solution, and examples thereof include an absorbent article and a warming sheet.
The absorbent article is not particularly limited and includes an absorbent body, for example, sanitary napkin, shorts-type sanitary napkin, panty liner, disposable diaper, incontinence pad, interlabial pad, tampon, puerperal pad, breast milk pad , A hemorrhoid pad, a sweat-absorbing pad, a pressure ulcer sheet (dressing sheet), a pet diaper, a pet sheet, and the like.

In the above-described absorbent article, the warming body containing the warming solution is, in the plane direction of the absorbent article, an absorbent body, a position that does not overlap in the thickness direction of the absorbent article, the absorbent body, and the thickness of the absorbent article. It can be arranged at a position overlapping in the direction, a position of any combination thereof, and the like. In the above-described absorbent article, the warming body containing the warming solution can be arranged on the liquid-permeable sheet, the above-mentioned intermediate sheet, the absorbent body, any combination thereof, and the like in the thickness direction of the absorbent article.
The absorbent article generally includes a liquid-permeable sheet, a liquid-impermeable sheet, and an absorbent between the liquid-permeable sheet and the liquid-impermeable sheet.

  The warming solution may move on or inside the material constituting the absorbent article, and a part of the material adjacent to the material where the warming solution is arranged may form a warming region. . For example, when the liquid permeable sheet is made of a cloth when the warm sensation solution is arranged on the intermediate sheet, a part of the warm sensation solution is, for example, an area of the adjacent liquid permeable sheet on the intermediate sheet side. In some cases, the liquid-permeable sheet moves mainly in the thickness direction of the absorbent article, and a region on the intermediate sheet side of the liquid-permeable sheet may form a warm feeling region. In addition, when the warming solution is disposed on the liquid permeable sheet, a part of the warming solution is, for example, the liquid of the adjacent intermediate sheet, the region on the liquid permeable sheet side, or the liquid of the adjacent absorber. The area on the permeable sheet side moves mainly in the thickness direction of the absorbent article, and the intermediate sheet, the area on the liquid permeable sheet side, or the area of the absorber on the liquid permeable sheet side is a warm feeling area. May be formed.

  As the warming sheet, for example, a clothing-fixing type warming sheet (for example, an adhesive portion for fixing to a wearer's clothing on a clothing contact surface of a liquid impermeable sheet, For fixing to the wearer's skin on the skin-fixing type warm sensation sheet (for example, on the skin contact surface of the liquid permeable sheet (for example, the periphery of the warm sensation sheet)). Provided with an adhesive portion, wherein the adhesive portion is attached to the wearer's skin for use).

  The clothing to which the clothing-fixing type warm sheet is fixed is not particularly limited, and includes, for example, a clothing having a portion directly in contact with the wearer's skin and preferably used by fitting to the wearer. Examples of the clothes include underwear (for example, shorts, shirts, brassiere, etc.), outerwear (for example, upperwear, lowerwear), socks, gloves, mufflers, face masks, eye masks, and the like.

The site to which the warming sheet can provide a warming feeling is not particularly limited and includes, for example, a head (for example, a face, for example, an eye), a neck, an upper limb (for example, a chest, an abdomen, a groin, a back). , Waist, upper arm, forearm, hand), lower limb (for example, thigh, lower leg, foot), and the like.
In the warming sheet, the warming solution can be held in a liquid permeable sheet, the above-described intermediate sheet, or the like.

In the warm sensation sheet, the warm sensation body containing the warm sensation solution can be arranged in the plane direction of the warm sensation sheet at the entire surface, at the center, at the periphery, at any combination thereof, or the like. In the warm sensation sheet, the warm sensation body containing the warm sensation solution can be arranged on the liquid permeable sheet, the above-described intermediate sheet, any combination thereof, or the like in the thickness direction of the warm sensation sheet.
The warm sensation sheet generally includes at least a liquid impermeable sheet and a liquid permeable sheet.

  Note that the warming solution may move on or inside the material constituting the warming sheet, and a part of the material adjacent to the material on which the warming solution is arranged may form a warming region. . For example, when the liquid permeable sheet is made of a cloth when the warm sensation solution is arranged on the intermediate sheet, a part of the warm sensation solution is, for example, an area of the adjacent liquid permeable sheet on the intermediate sheet side. In some cases, the warming sheet moves mainly in the thickness direction of the warming sheet, and a region on the intermediate sheet side of the liquid-permeable sheet may form a warming area. In addition, when the warm sensation solution is disposed on the liquid permeable sheet, a part of the warm sensation solution is mainly placed in the region of the adjacent intermediate sheet on the liquid permeable sheet side, mainly the thickness of the warm sensation sheet. The intermediate sheet may move in the vertical direction, and the area of the intermediate sheet on the liquid permeable sheet side may form a warm feeling area.

  In the warm sensation article of the present disclosure, it is preferable that the thickness of the region of the warm sensation article that overlaps with the warm sensation body is larger than the thickness of the area of the warm sensation article that does not overlap with the warm sensation body. By doing so, it becomes easier for the wearer to push in the area overlapping with the warming sensation, and hence the warming sensation solution is easily released from the warming sensation, and the wearer can more easily control the warming sensation.

Hereinafter, the present disclosure will be described with examples, but the present disclosure is not limited to these examples.
[Production Example 1]
As the warming article, the sanitary napkin No. 1 according to the first embodiment is used. 1 was produced. The liquid-permeable sheet in the absorbent body and the warming body is formed of an air-through nonwoven fabric having a lipophilic property by treating a portion overlapping in the thickness direction of the sanitary napkin and the sanitary napkin with a lipophilic agent. : Heat-fusible fiber, basis weight: 30 g / m ² , fiber density: 0.03 g / cm ³ , other parts were treated with a hydrophilizing agent). An air-through nonwoven fabric having a lipophilic property treated with an oiling agent (constituting fiber: heat-fusible fiber, basis weight: 60 g / m ² , fiber density: 0.06 g / cm ³ ), The coating was applied in such an amount that the basis weight of the warming agent was 1.0 g / m ² . The warming solution was composed of vanillyl butyl ether (10.0% by mass) as a warming agent and isononyl isononanoate as a lipophilic solvent. The liquid impermeable sheet was a polyethylene film (basis weight: 24 g / m ² ).

[Production Example 2]
A sanitary napkin No. was prepared in the same manner as in Production Example 1 except that the “air-through nonwoven fabric having hydrophilicity” as the liquid-permeable sheet was changed to “air-through nonwoven fabric having hydrophilicity” treated with a hydrophilic agent. . 2 was produced.

[Production Example 3]
As the warming article, the warming sheet No. 4 according to the fourth embodiment is used. 1 was produced. The liquid-permeable sheet is an air-through non-woven fabric (constituting fiber: heat-fusible fiber, basis weight: 30 g / m ² , fiber density: 0.03 g / cm ³ ) treated with a hydrophilic agent, and retains a warm feeling solution. The sheet is not treated with an oil agent (a hydrophilizing agent or a lipophilic agent), and has a hydrophilic air-laid pulp (constituent fiber: pulp fiber, basis weight: 100 g / m ² , fiber density: 0.06 g / cm). ³ ), and the warming solution was applied in such an amount that the basis weight of the warming agent was 1.0 g / m ² . The warming solution was composed of vanillyl butyl ether (0.3% by mass) as a warming agent, a surfactant (1.2% by mass), and water as a hydrophilic solvent. The liquid impermeable sheet was a polyethylene film (basis weight: 24 g / m ² ).

[Production Example 4]
An air-through nonwoven fabric having a lipophilic property, the entire surface of which is treated with a lipophilic agent (component fiber: heat-fusible fiber, basis weight: 30 g / m ² , fiber density: 0.03 g / cm) ³ ), except that the sanitary napkin No. was changed in the same manner as in Production Example 1. 3 was produced.
[Production Example 5]
An air-through nonwoven fabric having a lipophilic property, the entire surface of which is treated with a lipophilic agent (component fiber: heat-fusible fiber, basis weight: 30 g / m ² , fiber density: 0.03 g / cm) ³ ), except that the warming sheet No. was changed in the same manner as in Production Example 3. 2 was produced.

[Examples 1 to 3, and Comparative Examples 1 and 2]
A sanitary napkin no. 1 to No. 3, warm feeling sheet No. 1 and No. 1 2 to wear, and by pushing them in, the thermal sensibility adjustability of whether or not the thermal sensation is easy to adjust is evaluated in four steps of 1 to 4 (1: difficult to adjust, 4: easy to adjust) I was evaluated by value. Table 1 shows the results (average values have been rounded to integers).

DESCRIPTION OF SYMBOLS 1 Sanitary napkin 3 Absorbing body 5 Warm feeling main body 7 Liquid permeable sheet 9 Liquid impermeable sheet 11 Absorber 13 Warm feeling solution holding sheet 15 Shape holding member 17 Overlapping part 19 Clothing 21 Adhesive part 23 Flap part 25 Seal part 27 Embossed part 29 Packaging sheet 31 Heating element L Longitudinal direction W Width direction T Thickness direction F ₁ Longitudinal first folding axis F ₂ Longitudinal second folding axis F ₃ Width first folding axis F ₄ Width second folding axis F ₅ widthwise third Orijiku F ₆ Orijiku

Claims (8)

A liquid permeable sheet, a liquid impermeable sheet, a warm sensation article comprising a warming body between the liquid permeable sheet and the liquid impermeable sheet,
The warming body is composed of a fabric, and includes a warming solution containing a warming agent for activating a TRP channel and a solvent.
The warm-feeling article, characterized in that:   The warm sensation article according to claim 1, wherein the solvent is a lipophilic solvent.   The warm sensation article according to claim 2, wherein the lipophilicity of the fabric of the warming body is higher than the lipophilicity of the liquid-permeable sheet.   The said liquid-permeable sheet is comprised from cloth, The fiber density of the said cloth of the said warming body is higher than the fiber density of the said cloth of the said liquid-permeable sheet, any one of Claims 1-3. 2. The warming article according to item 1. In the liquid-permeable sheet, the thickness at a load of 30 g / cm ² is 70% or less of the thickness of at 3 g / cm ² load, warming according to any one of claims 1-4 Goods.   The warm sensation article according to claim 1 or 2, wherein the liquid permeable sheet is constituted by an apertured film.   2. The thickness of the region of the warming article that overlaps with the warming body in the thickness direction of the warming article is greater than the thickness of an area of the warming article that does not overlap with the warming body. 3. The warm sensation article according to any one of claims 6 to 6.   The warming article according to any one of claims 1 to 7, wherein the warming article is selected from the group consisting of a sanitary napkin, a panty liner, a disposable diaper, and a shorts-type sanitary napkin.

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