KR102611290B1 - absorbent article - Google Patents

Abstract

An absorbent article is provided that allows water-soluble components and lipophilic components of herbal medicine materials to easily reach the wearer's skin. The absorbent article includes an absorber 11 and a sheet member 7 that overlaps the absorber in the thickness direction and is positioned closer to the skin than the absorber and has liquid permeability. The absorbent article includes an herbal medicine material layer 45 located on at least one of the absorber and the sheet member and containing an herbal medicine material having a water-soluble component and a lipophilic component, and a oriental medicine material layer 45 located on at least one of the absorber and the sheet member and containing a lipophilic solvent. It is further provided with a solvent layer (51a) containing. A part of the herbal medicine material layer and a part of the solvent layer overlap in the thickness direction, or in the longitudinal or width direction.

Description

absorbent article

The present invention relates to absorbent articles.

Absorbent articles containing herbal medicine materials are known. For example, Patent Document 1 discloses an absorbent article in which an intermediate absorbent containing an herbal medicine material is disposed between a surface sheet and a base absorbent body. In this absorbent article, a powdery herbal medicine material having a desired particle size distribution or average particle shape is disposed on an intermediate absorbent body. As herbal medicine ingredients, herbal medicines such as Aleaf, Angelica root and Hyangbuja are used mixed in a ratio of, for example, 1:1:1.

Patent Document 1: Japanese Patent No. 4261593

As with the absorbent article in Patent Document 1, if the herbal medicine material is disposed on the non-skin side of the surface sheet, it appears at first glance that it is difficult to allow the components of the herbal medicine material to reach the wearer's skin. However, even in that case, if the ingredient is easily soluble in moisture, i.e., has water solubility, the herbal medicine material may come into contact with moisture from body fluids (e.g. menstrual blood) or sweat, which are liquid excretions. Can dissolve in moisture. Therefore, when the moisture reaches the skin, it is possible to allow the ingredients to reach the skin of the wearer.

However, there are cases where components of herbal medicine materials have a property that makes them difficult to blend with moisture, that is, they are water-insoluble. For example, if the component has the property of being easily fused with oil, that is, lipophilicity, even if the herbal medicine material comes into contact with moisture such as body fluids or sweat, it is difficult for the component to dissolve in the moisture. In that case, even if the moisture reaches the skin, it is difficult to allow the ingredients to reach the skin of the wearer. Therefore, even if such herbal medicine materials are disposed in absorbent articles, there is a risk that it will be difficult to fully exert their function as herbal medicine materials.

This also applies to herbal medicine materials that have both a water-soluble component and a lipophilic component. Examples of such herbal medicine materials include those containing one or more types of herbal medicines or extracts thereof having water-soluble components, and one or more types of herbal drugs or extracts thereof having lipophilic components. Furthermore, such herbal medicine materials include one or more types of herbal medicines or extracts thereof having both water-soluble components and lipophilic components.

Accordingly, the object of the present invention is an absorbent article comprising an herbal medicine material containing not only a water-soluble component but also a lipophilic component, and an absorbent article capable of easily allowing the components of these herbal medicine materials to reach the skin of the wearer. It is about providing.

The absorbent article of the present invention has a longitudinal direction, a width direction, and a thickness direction, and includes an absorbent body, a sheet member that overlaps the absorber body in the thickness direction, is positioned closer to the skin than the absorber body, and has liquid permeability. As an oriental medicine material layer located on at least one of the absorber and the sheet member and containing an oriental medicine material having a water-soluble component and a lipophilic component, and located on at least one of the absorber and the sheet member, a lipophilic solvent An absorbent article comprising a solvent layer comprising: a part of the herbal medicine material layer and a part of the solvent layer overlapping in the thickness direction, or in the longitudinal direction or the width direction.

According to the present invention, there is provided an absorbent article comprising an herbal medicine material containing not only a water-soluble component but also a lipophilic component, and which allows the components of these herbal medicine materials to easily reach the wearer's skin. You can.

Fig. 1 is a plan view showing a structural example of a sanitary napkin according to the first embodiment.
FIG. 2 is a cross-sectional view along the longitudinal center line in FIG. 1.
Fig. 3 is a bottom view showing a structural example of a sanitary napkin according to the first embodiment.
Figure 4 is a schematic diagram showing the arrangement of the solvent layer of the liquid-permeable sheet according to the first embodiment.
Fig. 5 is a schematic diagram showing the arrangement of the solvent layer in the absorber according to the first embodiment.
Fig. 6 is a plan view showing a structural example of a sanitary napkin according to the second embodiment.
FIG. 7 is a cross-sectional view along the longitudinal center line in FIG. 6.
Fig. 8 is a schematic diagram showing the arrangement of the solvent layer of the liquid-permeable sheet according to the second embodiment.
Fig. 9 is a schematic diagram showing the arrangement of the solvent layer of the absorber according to the second embodiment.

Specifically, the disclosure of the present invention relates to the following aspects.

[Mode 1]

An absorbent article having a longitudinal direction, a width direction, and a thickness direction, comprising an absorbent body, a sheet member that overlaps the absorber in the thickness direction, is positioned closer to the skin than the absorber body, and has liquid permeability, wherein the absorbent body and the sheet An herbal medicine material layer located on at least one of the members and containing an herbal medicine material having a water-soluble component and a lipophilic component, and a solvent layer located on at least one of the absorber and the sheet member and containing a lipophilic solvent; , an absorbent article in which a part of the herbal medicine material layer and a part of the solvent layer overlap in the thickness direction, or in the longitudinal direction or the width direction.

In the present absorbent article, the herbal medicine material having a water-soluble component and a lipophilic component and the lipophilic solvent partially overlap in the thickness direction or in the planar direction (longitudinal or width direction), and at least one of the absorbent body and the sheet member It is located in

Therefore, in the area where the herbal medicine material overlaps the lipophilic solvent in the thickness direction or planar direction, when body fluid is excreted in the absorbent article and migrates and diffuses inside the sheet member and absorber, a part of the body fluid is combined with the herbal medicine material and the lipophilic solvent. Passes through solvent. As a result, along with the flow (migration and diffusion) of the body fluid, the lipophilic solvent also migrates and diffuses and comes into contact with at least part of the herbal medicine material. Thereby, the lipophilic component of the herbal medicine material can be dissolved in the lipophilic solvent. Then, the lipophilic solvent containing the lipophilic component diffuses or volatilizes, allowing the lipophilic solvent to reach the wearer's skin. Alternatively, when the lipophilic solvent containing the lipophilic component is contained in moisture such as body fluids or sweat, for example, in the form of an oil film on the surface of the moisture, the moisture becomes vapor or is deposited on an absorbent article. By diffusing back to the skin side due to the applied body pressure, the lipophilic solvent along with moisture can reach the skin of the wearer. In other words, the lipophilic component of the herbal medicine material can reach the skin of the wearer.

On the other hand, in areas where the herbal medicine material does not overlap with the lipophilic solvent in the thickness direction or planar direction (partial overlap is also possible), when body fluid migrates and diffuses within the sheet member and absorber, a part of the body fluid is contained in the lipophilic solvent. Reach the herbal medicine ingredients without passing through. Alternatively, sweat released from the skin diffuses within the sheet member and reaches the herbal medicine material. In other words, moisture such as body fluids and sweat comes into contact with the herbal medicine material through flow (migration/diffusion). By these means, the water-soluble components of herbal medicine materials can be dissolved in moisture such as body fluids and sweat. At that time, since the lipophilic solvent does not exist nearby, it is possible to prevent the lipophilic solvent from covering the herbal medicine material and making it difficult for moisture to reach the herbal medicine material. Then, the moisture containing the water-soluble component becomes vapor or diffuses toward the skin due to body pressure applied to the absorbent article, allowing the moisture containing the water-soluble component to reach the wearer's skin. there is. In other words, the water-soluble components of the herbal medicine material can reach the skin of the wearer.

Due to these, in an absorbent article in which the herbal medicine material contains not only a water-soluble component but also a lipophilic component, it becomes possible to easily allow both components of the herbal medicine material to reach the wearer's skin. Thereby, the present absorbent article can exhibit the effects of herbal medicine materials, such as the effect of improving blood flow and blood circulation and warming the body.

[Aspect 2]

The absorbent article according to aspect 1, wherein the solvent layer is located closer to the skin than the herbal medicine material layer.

In the present absorbent article, the solvent layer is located closer to the skin than the herbal medicine material layer. Therefore, when the body fluid is excreted in the absorbent article and migrates and spreads inside the sheet member and the absorbent body, the body fluid and the lipophilic solvent can reliably pass through the herbal medicine material. Therefore, the lipophilic component of the herbal medicine material can be dissolved in the lipophilic solvent, thereby allowing the lipophilic component of the herbal medicine material to reach the wearer's skin more easily.

[Aspect 3]

The absorbent article according to aspect 2, wherein the solvent layer is further located on a non-skin side than the herbal medicine material layer.

In the present absorbent article, the solvent layer is present not only at a position on the skin side of the herbal medicine material layer, but also at a position on the non-skin side of the herbal medicine material layer. Therefore, when the body fluid is excreted in the absorbent article and migrates and spreads inside the sheet member and the absorbent body, the body fluid and the lipophilic solvent can pass through the herbal medicine material more reliably. Therefore, the lipophilic component of the herbal medicine material can be further dissolved in the lipophilic solvent, and thereby more of the lipophilic component of the herbal medicine material can be allowed to reach the wearer's skin.

[Aspect 4]

The absorbent article according to any one of aspects 1 to 3, wherein the solvent layer is not disposed in the central portion of the width direction.

The central portion in the width direction of the absorbent article contacts the wearer's excretion opening and the area near it, that is, the sensitive skin area. Therefore, in the present absorbent article, the solvent layer is not disposed in the central portion of the absorbent article in the width direction. For this reason, it can be difficult to transfer the lipophilic component of the herbal medicine material to the area where the sensitive skin area comes into contact. Thereby, the lipophilic component of the herbal medicine material can be allowed to reach areas other than the central portion in the width direction of the absorbent article, while the component can be prevented from directly reaching the sensitive skin area.

[Aspect 5]

The absorbent article according to any one of aspects 1 to 4, further comprising a warming agent that is located on at least one of the absorber and the sheet member and has a warming function.

In the present absorbent article, a warming agent having a warming function is further provided. Therefore, the herbal medicine material can be soaked by air containing moisture such as sweat generated near the skin where the body temperature has risen due to the effect of warmth, thereby increasing its surface area, making it easier to release the ingredients of the herbal medicine material. In addition, since the lipophilic solvent can be warmed by the air warmed by the effect of warmth, the components of the herbal medicine material dissolved in the lipophilic solvent are volatilized together with moisture and/or the lipophilic solvent or alone. You can do it easily. These allow the ingredients of herbal medicine ingredients to reach the wearer's skin more easily. Additionally, when the effect of the herbal medicine material is to warm the body by improving blood flow or blood circulation, the absorbent article can further warm the body due to the synergistic effect of the warming agent and the herbal medicine material.

[Aspect 6]

In a plan view, a warming member is located at least one of a front and rear side of the absorbent article in the longitudinal direction relative to the absorbent body, and further includes a warming member containing another warming agent having a warming function, the sheet member extends to at least one of the front and rear sides in the longitudinal direction of the absorber in a plan view, overlaps the thermal member in the thickness direction, and is located on a skin side of the thermal member. Any one of aspects 1 to 5. The absorbent article described in paragraph 1.

The absorbent article further includes a warming member containing another warming agent, which is located on at least one of the longitudinal front side of the absorber, i.e., the wearer's back side, and the longitudinal rear side of the absorber, i.e., the wearer's back side. Therefore, when the absorbent article is worn on the wearer, at least one of the wearer's dorsal and back sides can be warmed by the warming agent. Thereby, the components of the herbal medicine material can reach the wearer's skin, and at least one of the abdomen and the back can be warmed by the other warming agent located on at least one of the dorsal and back sides.

[Aspect 7]

another herbal medicine material layer located on at least one of the warming member and the sheet member and containing another herbal medicine material having a water-soluble component and a lipophilic component; and another oriental medicine material layer located on at least one of the warming member and the sheet member and the other lipophilic component. The absorbent article according to aspect 6, comprising another solvent layer containing an oil-based solvent, wherein a part of the other herbal medicine material layer and a part of the other solvent layer overlap in the thickness direction.

In the present absorbent article, on at least one of the longitudinal front and rear sides of the absorbent body, the other herbal medicine material and the other lipophilic solvent partially overlap in the thickness direction or the planar direction (longitudinal direction or width direction), and a warming member and It is located on at least one side of the sheet member. Therefore, when the absorbent article is worn on the wearer, at least one of the dorsal or back sides of the wearer is warmed by the warming agent, and the air containing moisture such as sweat generated near the skin where the body temperature has risen due to the warming effect is absorbed. , It is possible to soak other herbal medicine materials and increase the surface area, making it easier to release the components of other herbal medicine materials. In addition, because the air warmed by the warming effect can warm other lipophilic solvents, the components of other herbal medicine materials dissolved in other lipophilic solvents can be mixed with water and/or other lipophilic solvents, or alone. This makes it easy to volatilize. By these means, it is possible to allow the components of other herbal medicine materials to reach the skin of the wearer's front longitudinal direction more on at least one of the front and rear sides in the longitudinal direction.

[Aspect 8]

The warming agent includes a warming component that causes the wearer to perceive a warm sensation, and a solvent component that dissolves or disperses the warming component, and the solvent component is the lipophilic solvent. Absorbent article described.

In this absorbent article, since the solvent component contained in the warming agent is a lipophilic solvent, (the solvent component of) the warming agent can be used as the solvent layer, and there is no need to form a separate solvent layer, or Area or thickness can be reduced. Thereby, the distance between the herbal medicine material and/or the warming agent and the skin surface of the wearer can be shortened. Therefore, it is possible to make it easier for the herbal medicine material layer and/or the warming agent to reach the skin of the wearer.

[Aspect 9]

The absorbent article according to any one of aspects 1 to 8, wherein the herbal medicine material includes a herbal medicine containing the water-soluble component and a herbal medicine having the lipophilic component.

As herbal medicine materials, there exist multiple types of herbal medicines or mixtures of extracts of the above herbal medicines. Therefore, in the present absorbent article, as the herbal medicine material, a herbal medicine containing a water-soluble component or an extract of the herbal medicine is mixed with a herbal medicine or an extract of the herbal medicine having a lipophilic component. Even in this case, in the present absorbent article, by dissolving the water-soluble component in moisture and dissolving the lipophilic component in a lipophilic solvent, the components of these herbal medicine materials can be made more likely to reach the skin of the wearer. Therefore, even if the herbal medicine material is a mixture of a plurality of herbal medicines or extracts of the herbal medicines, the components of each herbal medicine or the extract of each herbal medicine can be effectively used without separating the herbal medicines or the extracts of the herbal medicines.

Hereinafter, the absorbent article according to the embodiment will be described by taking a sanitary napkin containing herbal medicine material as an example. However, the absorbent article is not limited to that example, and other absorbent articles containing herbal medicine materials may be used as long as it does not deviate from the spirit of the present invention. Examples of such absorbent articles include common sanitary napkins, panty liners, incontinence pads, and disposable diapers containing herbal medicine materials.

(First Embodiment)

The configuration of the sanitary napkin 1 according to this embodiment will be described. 1 to 5 are diagrams showing a structural example of the sanitary napkin 1 according to this embodiment. Fig. 1 is a plan view showing the individual packaging sheet 41 of the sanitary napkin 1 in an opened and unfolded state. Fig. 2 is a cross-sectional view along the longitudinal center line CL (described later) of the sanitary napkin 1 shown in Fig. 1 (excluding the individual packaging sheet 41). Fig. 3 is a bottom view showing the sanitary napkin 1 (excluding the individual packaging sheet 41). Fig. 4 is a schematic diagram showing the arrangement of solvent layers 51a, 51b (described later), etc. in the liquid-permeable sheet 7 of the sanitary napkin 1. Fig. 5 is a schematic diagram showing the arrangement of the solvent layers 50a, 52a (described later), etc. of the sanitary napkin 1. The sanitary napkin 1 has a longitudinal direction (L), a width direction (W), and a thickness direction (T) that are orthogonal to each other. In the sanitary napkin 1 drawn in FIG. 1, the upper side of the drawing is referred to as the front (front) or dorsal side in the longitudinal direction (L), and the lower side of the drawing is referred to as the rear (posterior) or dorsal side in the longitudinal direction (L). The sanitary napkin 1 placed on a plane including the longitudinal direction (L) and the width direction (W) when viewed from above in the thickness direction (T) is called “planar view,” and the shape seen in plan view is called “planar view.” It is called a “flat shape.” Any direction in the plane including the longitudinal direction (L) and the width direction (W) is called the “plane direction.” When the wearer puts on the sanitary napkin 1, the side that is relatively close to and far from the wearer's skin surface in the thickness direction T is called the “skin side” and the “non-skin side,” respectively. These definitions are also commonly used for each material of the sanitary napkin 1.

The individual packaging sheet 41 has both ends in the longitudinal direction (L) longer outward in the longitudinal direction (L) than both ends in the longitudinal direction (L) of the sanitary napkin 1, and both ends in the width direction (W). , it is longer outward in the width direction (W) than both ends of the sanitary napkin (1) in the width direction (W). Accordingly, the sanitary napkin 1 is arranged so that, when placed on the individual packaging sheet 41, it does not protrude to the outside of the individual packaging sheet 41 in plan view. Thereby, when the sanitary napkin 1 is folded together with the individual packaging sheet 41, the sanitary napkin 1 can be packaged so that it does not protrude to the outside of the individual packaging sheet 41.

The sanitary napkin 1 has an absorbent body 3 that mainly absorbs body fluids (e.g. menstrual blood), which are liquid excretions, and is located on the front (dorsal side) in the longitudinal direction L of the absorbent body 3, and is positioned on the skin. It is provided with a warmth body (5) that perceives warmth. That is, the sanitary napkin 1 is divided into a rear absorbent body 3 in the longitudinal direction (L) and a front warm body 5 in the longitudinal direction (L). The shape of the absorbent body 3 is roughly that of a general sanitary napkin, and is provided with a pair of wing portions 17, 17 extending outwardly in the width direction W. The shape of the thermal body 5 is not particularly limited, and examples thereof include a triangle, a rectangle, a polygon (including those with rounded corners or curved sides), a circle, an oval, the shape of a living thing, or a combination thereof. You can. Moreover, in another embodiment, the warm feeling main body 5 is located on the back side (dorsal side) instead of the front side (dorsal side) of the longitudinal direction L of the absorbent main body 3, or together with the front side (dorsal side). In another embodiment, the pair of wing portions 17, 17 is not present. In another embodiment, the thermal sensing body 5 is not provided.

The sanitary napkin 1 has a longitudinal center line CL (imaginary line) extending through the center of the width direction W and extending in the longitudinal direction L, and each length of a pair of wing portions 17, 17. It has a width direction center line (CW) (imaginary line) connecting the center of the direction (L) to the width direction (W). However, when the wing portion 17 is not present, the width direction center line CW passes through the center of the outlet contact area 21 (described later) in the longitudinal direction L. It should be a line extending in the direction (W). In this embodiment, both are assumed to coincide. Alternatively, when the absorber 11 has a so-called hourglass shape, the width direction center line (CW) is the position (excluding both ends) where the dimension in the width direction (W) of the absorber 11 is minimum in the longitudinal direction (L). It shall be a line extending in the width direction (W) passing through In the sanitary napkin 1, the direction and side toward the longitudinal center line CL are respectively inward and inward in the width direction W, and the direction and side away from it are respectively outward and outward in the width direction W. do. On the other hand, the direction and side toward the width direction center line CW are respectively set inward and inside the longitudinal direction L, and the direction and side away from it are respectively set outward and outward in the longitudinal direction L. These definitions are also commonly used for each material of the sanitary napkin 1.

The sanitary napkin (1) includes, in the absorbent body (3), a liquid-permeable sheet (7) that contacts the skin of the wearer when worn, and a liquid-impermeable sheet (9) that contacts clothing (underwear) when worn. and an absorber (11) disposed between the liquid-permeable sheet (7) and the liquid-impermeable sheet (9). In addition, the sanitary napkin 1 includes, in the warm body 5, a liquid-permeable sheet 7 that contacts the skin of the wearer when worn, and a liquid-impermeable sheet 9 that contacts clothing when worn. , and a thermostat holding sheet (13) disposed between the liquid-permeable sheet (7) and the liquid-impermeable sheet (9). The thermostat holding sheet 13 is located ahead of the absorber 11 in the longitudinal direction L. Additionally, the liquid-permeable sheet 7 in the absorbent body 3 and the liquid-permeable sheet 7 in the warm-sensing body 5 are one sheet. The liquid-impermeable sheet 9 in the absorbent body 3 and the liquid-impermeable sheet 9 in the warm-sensing body 5 are one sheet. However, the term “integrated sheet” includes not only a single sheet of material, but also sheets obtained by combining multiple sheets into one piece. The absorbent body 11 in the absorbent body 3 and the warming agent holding sheet 13 in the warming body 5 are different members. The front end in the longitudinal direction (L) of the absorber 11 overlaps with the rear end in the longitudinal direction (L) of the thermal agent holding sheet 13 in the thickness direction (T), thereby forming an overlapping portion (15). do. That is, in the longitudinal direction L, the front end edge 11E1 of the absorber 11 is located ahead of the rear end edge 13E2 of the thermal agent holding sheet 13. In this case, in the overlapping portion 15, the end of the absorber 11 is disposed on the end of the thermal agent holding sheet 13. This is to suppress leakage of body fluid from the front in the longitudinal direction (L).

Additionally, in another embodiment, when the function of thermal sensation is emphasized, in the overlapping portion 15, the end of the thermal agent holding sheet 13 is disposed on the end of the absorber 11. In another embodiment, the end of the absorber 11 and the end of the thermal agent holding sheet 13 do not overlap in plan view (the overlapping portion 15 does not exist), and these end edges are in contact with each other. Or they are spaced apart. In another embodiment, the position of the front end edge 11E1 in the longitudinal direction L of the absorber 11 is the same as that of the front end edge 13E1 in the longitudinal direction L of the thermal agent holding sheet 13. It overlaps with the location or exists outside it. In other words, the thermostat holding sheet 13 overlaps the absorber 11 over the entire length direction L. As another embodiment, the thermal body 5 is replaced by a thermal insulation body of the same shape, and the thermal agent holding sheet 13 is replaced by a thermal insulation sheet of the same shape that does not contain a thermal agent.

The sanitary napkin (1) includes, in at least one of the absorbent body (3) and the warm body (5), an herbal medicine material layer containing an herbal medicine material having a water-soluble component and a lipophilic component, and a lipophilic solvent. It is provided with a solvent layer. In this embodiment, the sanitary napkin 1 includes, in the absorbent body 3, an herbal medicine material layer 45 containing an herbal medicine material having a water-soluble component and a lipophilic component, and a lipophilic solvent. It is provided with a solvent layer (51a). The herbal medicine material layer 45 has a substantially rectangular shape in plan view, and is located on or inside the skin-side surface of the absorber 11 in the thickness direction T. The herbal medicine material layer 45 is located on both sides of the longitudinal center line CL and on both sides of the width direction center line CW in plan view, that is, the width of the absorbent body 3 It is located in the central area in the direction (W) and longitudinal direction (L). In this embodiment, all or part of the herbal medicine material layer 45 is located in a region including the excretory outlet contact area 21 (described later) in plan view. Additionally, in another embodiment, the herbal medicine material layer 45 is located on the surface of the liquid-permeable sheet 7 on the non-skin side in the thickness direction T. Additionally, the planar shape of the herbal medicine material layer 45 is arbitrary.

The solvent layer 51a extends in the longitudinal direction (L) in plan view, has the shape of a plurality of stripes arranged at predetermined intervals in the width direction (W), and is formed in the thickness direction (T) by a liquid-permeable sheet ( 7) It is located on the surface of the non-skin side. A part of the herbal medicine material layer 45 and a part of the solvent layer 51a overlap in the thickness direction T, and a part of the herbal medicine material layer 45 is located on the non-skin side of a part of the solvent layer 51a. . A part of the herbal medicine material layer 45 and a part of the solvent layer 51a are in direct contact in the thickness direction T from the viewpoint that the lipophilic component is easily eluted into the lipophilic solvent. From the viewpoint that the lipophilic component easily comes into contact with the lipophilic solvent, the solvent layer 51a is located outside the herbal medicine material layer 45 in the longitudinal direction (L) and in the width direction (W) in a plan view. extends to the outside of. In the sanitary napkin 1, there is a region VM1 in which a part of the herbal medicine material layer 45 and a part of the solvent layer 51a do not overlap in the thickness direction T, that is, the herbal medicine material is present but the lipophilic solvent is not present. There is an area that does not exist. This is to make it easier for the water-soluble components of herbal medicine ingredients to be dissolved in moisture such as body fluids or sweat. In addition, as another embodiment, when the herbal medicine material layer 45 is located on the non-skin-side surface of the liquid-permeable sheet 7 in the thickness direction T, the solvent layer 51a is located in the thickness direction T , it is located on the skin side of the herbal medicine material layer 45 in the liquid-permeable sheet 7. Additionally, the planar shape of the solvent layer 51a is arbitrary.

The sanitary napkin (1) further includes a solvent layer (52a) containing a lipophilic solvent in the absorbent body (3). The solvent layer 52a extends in the longitudinal direction (L) in plan view and has the shape of a plurality of stripes lined up at predetermined intervals in the width direction (W), and in the thickness direction (T), the herbal medicine material layer ( The non-skin side of 45) is also located on or inside the skin side of the absorber 11. A part of the herbal medicine material layer 45 and a part of the solvent layer 52a overlap in the thickness direction T, and a part of the herbal medicine material layer 45 is located on the skin side of a part of the solvent layer 52a. A part of the herbal medicine material layer 45 and a part of the solvent layer 52a are in direct contact in the thickness direction T from the viewpoint that the lipophilic component is easily eluted into the lipophilic solvent. From the viewpoint that the lipophilic component easily comes into contact with the lipophilic solvent, the solvent layer 52a is located outside the herbal medicine material layer 45 in the longitudinal direction L and to the outside in the width direction W in a plan view. It is extended. In the sanitary napkin 1, there is a region VM2 in which a part of the herbal medicine material layer 45 and a part of the solvent layer 52a do not overlap in the thickness direction T, and therefore the herbal medicine material is present but the lipophilic solvent is not present. There is an area that does not exist. This is to make it easier for the water-soluble components of herbal medicine ingredients to be dissolved in moisture such as body fluids or sweat. Additionally, the planar shape of the solvent layer 52a is arbitrary.

Moreover, in another embodiment, it has either the solvent layer 51a or the solvent layer 52a and does not have the other. In another embodiment, (part of) the herbal medicine material layer 45, at least one of (part of) the solvent layer 51a and (part of) the solvent layer 52a is the ratio of the liquid-permeable sheet 7. It is located in approximately the same range in the thickness direction T on the skin-side surface and/or the skin-side surface or interior of the absorber 11. In that case, it can be said that a part of the herbal medicine material layer 45, a part of the solvent layer 51a, and at least one of a part of the solvent layer 52a overlap in the planar direction (longitudinal direction or width direction). Such a state may include, for example, a state in which one of a part of the herbal medicine material layer 45 and a part of the solvent layer 51a (, 52a) is buried in the other.

The sanitary napkin 1 includes, in the warm body 5, another herbal medicine material layer 47 containing an herbal medicine material having a water-soluble component and a lipophilic component, and another solvent layer containing a lipophilic solvent ( 51b) is provided. The herbal medicine material layer 47 extends in the longitudinal direction L and has the shape of a plurality of stripes arranged at predetermined intervals in the width direction W, and in the thickness direction T, the thermal agent holding sheet 13 It is located on the surface or inside the skin side. The herbal medicine material layer 47 is formed in a central area in the width direction (W) of the thermal agent holding sheet 13 between both ends in the longitudinal direction (L) in a plan view. In another embodiment, the herbal medicine material layer 47 is located on the surface of the liquid-permeable sheet 7 on the non-skin side in the thickness direction T. Additionally, the planar shape of the herbal medicine material layer 47 is arbitrary.

The solvent layer 51b extends in the longitudinal direction (L) and has the shape of a plurality of stripes lined up at predetermined intervals in the width direction (W), and has the ratio of the liquid-permeable sheet 7 in the thickness direction (T). It is located on the surface of the skin. In the width direction (W), the width of the solvent layer 51b is larger than the width of the herbal medicine material layer 47. A part of the herbal medicine material layer 47 and a part of the solvent layer 51b overlap in the thickness direction T, and a part of the herbal medicine material layer 47 is located on the non-skin side of a part of the solvent layer 51b. . A part of the herbal medicine material layer 47 and a part of the solvent layer 51b are in direct contact in the thickness direction T from the viewpoint that the lipophilic component is easily eluted into the lipophilic solvent. In addition, there is a region where a part of the herbal medicine material layer 47 and a part of the solvent layer 51b do not overlap in the thickness direction T, that is, a region where the herbal medicine material exists but the lipophilic solvent does not exist. This is to make it easier for the water-soluble components of herbal medicine ingredients to be dissolved in moisture such as body fluids or sweat. In addition, as another embodiment, when the herbal medicine material layer 47 is located on the non-skin-side surface of the liquid-permeable sheet 7 in the thickness direction T, the solvent layer 51b is located in the thickness direction T , it is located on the skin side of the herbal medicine material layer 47 in the liquid-permeable sheet 7. Additionally, the planar shape of the solvent layer 51b is arbitrary.

The sanitary napkin 1 further includes a solvent layer 50a containing a lipophilic solvent in the warm body 5. The solvent layer 50a is, in plan view, an area excluding both ends in the width direction (W) of the thermal agent holding sheet 13, and the non-skin area of the herbal medicine material layer 47 in the thickness direction (T). The side is also located on or inside the skin-side surface of the warming agent holding sheet 13. A part of the herbal medicine material layer 47 and a part of the solvent layer 50a overlap in the thickness direction T, and a part of the herbal medicine material layer 47 is located on the skin side of a part of the solvent layer 50a. A part of the herbal medicine material layer 47 and a part of the solvent layer 50a are in direct contact in the thickness direction T from the viewpoint that the lipophilic component is easily eluted into the lipophilic solvent. The solvent layer 50a extends outward in the width direction W from the perspective of the herbal medicine material layer 47 in plan view, from the viewpoint that the lipophilic component easily comes into contact with the lipophilic solvent. In addition, in another embodiment, the sanitary napkin 1 has a region where a part of the herbal medicine material layer 47 and a part of the solvent layer 50a do not overlap in the thickness direction T, that is, the herbal medicine material is present but is lipophilic. There is a region where no solvent exists. This is to make it easier for the water-soluble components of herbal medicine ingredients to be dissolved in moisture such as body fluids or sweat. Additionally, the planar shape of the solvent layer 50a is arbitrary.

Moreover, in another embodiment, it has either the solvent layer 51b or the solvent layer 50a and does not have the other. In another embodiment, (part of) the herbal medicine material layer 47, (part of) the solvent layer 51b, and (part of) the solvent layer 50a are at least one of the liquid-permeable sheet 7. It is located in approximately the same range in the thickness direction T on the skin-side surface and/or the skin-side surface or inside of the warming agent holding sheet 13. In that case, it can be said that a part of the herbal medicine material layer 47, a part of the solvent layer 51b, and at least one of a part of the solvent layer 50a overlap in the planar direction (longitudinal direction or width direction). Such a state may include, for example, a state in which one of a part of the herbal medicine material layer 47 and a part of the solvent layer 51b (, 50a) is buried in the other. Additionally, the sanitary napkin 1 may have at least one of the herbal medicine material layer 45 and the herbal medicine material layer 47.

In this embodiment, the range in the longitudinal direction L of the absorbent body 3 is the range from the rear end edge of the sanitary napkin 1 to the front end edge 11E1 of the absorbent body 11. Do this. On the other hand, the range in the longitudinal direction L of the thermal body 5 is the range from the front edge 11E1 of the absorber 11 to the front edge of the sanitary napkin 1. In addition, the ranges in the width direction (W) in the absorbent body 3 and the thermal sensing body 5 are all set to the full width range. In this case, the overlapping portion 15 is included in the absorbent body 3, and the rear end of the thermal agent holding sheet 13 of the thermal body 5 in the longitudinal direction L is included in the absorbent body 3. It can be said that it extends within. In addition, the absorbent body 3 has, in the longitudinal direction L, a front area 3a from the width direction center line CW to the front end edge 11E1 of the absorber 11, and a width direction center line CW. ) to the rear end edge of the sanitary napkin 1. However, in the longitudinal direction L, the front and rear end edges of the sanitary napkin 1, the front and rear end edges 11E1 and 11E2 of the absorber 11, and the warming agent retaining sheet 13. The front and rear end edges 13E1 and 13E2 are both positioned at the outermost positions in the longitudinal direction L. In this embodiment, the end edges 11E1 and 11E2 and the end edges 13E1 and 13E2 are all set as intersection points with the longitudinal center line CL.

In the present embodiment, in the sanitary napkin 1, in the absorbent body 3, in plan view, the excrement port contact area 21 is slightly forward of the center in the longitudinal direction L and in the center of the width direction W. This is located, and the excrement port non-contact area 23 is located around it as an additional area. The outlet contact area 21 is an area that faces or contacts the wearer's outlet when the sanitary napkin 1 is worn. The excrement outlet contact area 21 is determined depending on the type and purpose of the absorbent article. The excrement port contact area 21 is, for example, slightly forward of the center of the absorber 11 in the longitudinal direction L and has a length of about 1/4 to 2/3 of the total length in the longitudinal direction L of the absorber 11. It is located approximately at the center of the absorber 11 in the width direction (W) and has a width of about 1/3 to 3/4 of the total length of the absorber 11 in the width direction (W). When a pair of wing parts 17, 17 is present as in this embodiment, a line connecting the center of each of the pair of wing parts 17, 17 in the longitudinal direction L in the width direction W On this, the center of the excretory mouth contact area 21 in the longitudinal direction L is located. Alternatively, when the absorber 11 has a so-called hourglass shape, the length of the outlet contact area 21 is at the position where the dimension in the width direction (W) of the absorber is smallest, excluding both ends in the longitudinal direction (L) of the absorber. The center of the direction (L) is located. However, positional deviation within a predetermined length range is permitted. The predetermined length is 5% of the length of the absorber 11 in the longitudinal direction L.

The liquid-permeable sheet (sheet member) 7 is a pair that overlaps the absorber 11 in the thickness direction (T) and is joined to the top sheet 7a on both sides in the width direction (W) of the top sheet 7a. It is equipped with side sheets 7b and 7b. The size of the surface sheet 7a in the width direction (W) is approximately the size of the width direction (W) of the absorber 11. Each side sheet 7b is located at an inner end in the width direction W and includes a leakage prevention wall 7W extending along the longitudinal direction L. That is, the liquid-permeable sheet 7 includes a pair of leakage prevention walls 7W and 7W. Each leakage prevention wall 7W has an outer end edge as a fixed end in the width direction W, an inner end edge as a free end, and has an inner end edge as a free end in the width direction T of the top sheet 7a. It extends upward. The pair of leakage prevention walls 7W, 7W is formed so that the free end can stand toward the skin when the sanitary napkin 1 is attached. A pair of leakage prevention walls 7W and 7W are formed on the absorbent body 3 and the warm feeling main body 5, and prevent body fluid from leaking mainly to the outside in the width direction W, and the warm feeling main body 5 ), the warmed air is suppressed and maintained from escaping outward in the width direction (W) due to the effect of the thermal sensation.

Additionally, in another embodiment, a leakage prevention wall 7W extending along the longitudinal direction L is included at each end of the surface sheet 7a in the width direction W. In another embodiment, the liquid-permeable sheet 7 does not have a pair of side sheets 7b, 7b. In another embodiment, the liquid-permeable sheet 7 does not have a pair of leakage prevention walls 7W, 7W. In another embodiment, the liquid-permeable sheet 7 is in contact with the non-skin side of the top sheet 7a, and thus overlaps the absorber 11 in the thickness direction T, thereby diffusing body fluid in the planar direction. A sheet (sheet member) is provided. In another embodiment, the surface sheet 7a is positioned between a plurality of convex portions extending continuously or intermittently along the longitudinal direction L and adjacent convex portions, and is configured to extend continuously or intermittently along the longitudinal direction L. It has a plurality of concave portions extending to.

The absorbent body 11 includes an absorbent core (not shown) and a core wrap (not shown) surrounding the absorbent core. The absorber 11 has, in the longitudinal direction L, a central region 62 located approximately in the center, a front region 61 adjacent to the front of the central region 62, and a rear region of the central region 62. It is divided into a rear area 63 adjacent to . Here, the central area 62 corresponds to the excretory port contact area 21 and is located further forward in the longitudinal direction L. The herbal medicine material layer 45 described above is located in the central area 62. And, the basis weight of the center area 62 is higher than that of the front area 61 and the rear area 63. Therefore, in the absorber 11, the basis weight of the area in the longitudinal direction L ahead of the width direction center line CW is higher than the basis weight of the area behind the width direction center line CW in the longitudinal direction L. That is, in the absorber 11, the basis weight of the area from the width direction center line CW to the front end edge 11E1 in the longitudinal direction L is that of the area from the width direction center line CW to the rear end edge 11E1 in the longitudinal direction L. However, it is higher than the basis weight of the area up to the edge (11E2). As a result, the amount of absorption in the outlet contact area 21 slightly forward of the center in the longitudinal direction L is increased, and the wearer's outlet is slightly shifted forward in the longitudinal direction L relative to the outlet contact area 21. Even when the sanitary napkin 1 is attached, it becomes possible to reliably absorb body fluids with the absorbent body 11. In other embodiments, the basis weight of the absorber 11 is high in specific parts different from the above, or is approximately constant over the entire area. In other embodiments, the absorbent body 11 does not utilize a core wrap.

The warmth agent holding sheet 13 (functional layer; warmth member) is comprised of a single-layer or multiple-layer sheet such as nonwoven fabric, and contains a warmth agent 50 (functional agent). The shape of the warming agent holding sheet 13 is not particularly limited as long as it can be placed inside the peripheral edge portion 27 of the sanitary napkin 1 to suppress leakage of the warming agent 50, for example, A shape in which the shape of the main body 5 is similarly reduced can be given. The warming agent 50 contains a warming component that stimulates the temperature receptor (heat perception receptor) of the skin and causes the wearer to perceive a sense of warmth without heating the body of the person wearing the sanitary napkin 1 or its vicinity. And, it further includes a solvent component that dissolves or disperses the warming component. The warming agent 50 is in the form of a gas or liquid and contains a fluid component or volatile component that can move from the place where it is placed due to the influence of temperature, atmospheric pressure, external force, etc., for example, at least one of the warming component and the solvent component. This includes fluid components or volatile components. Moreover, even if the warming agent holding sheet 13 is disposed on the non-skin side of the liquid-permeable sheet 7, the warming agent 50 of the warming agent holding sheet 13 is used when wearing the sanitary napkin 1. For example, it can penetrate the liquid-permeable sheet 7 by elution or volatilization and come into contact with the skin of the wearer's lower abdomen. Thereby, the warm component of the warm agent 50 stimulates the heat perception receptors of the skin, and can provide a warm feeling to the lower abdomen of the wearer. In this embodiment, the solvent component of the warming agent 50 and the solvent component of the solvent layer 50a (the solvent component) are the same. Accordingly, the warming agent 50 exists at the location where the solvent layer 50a exists. By sharing the solvent components of both, the distance between the herbal medicine material layer 47 or the warming agent 50 and the skin surface of the wearer can be shortened, and the thickness can be reduced to improve wearing comfort.

In this embodiment, in the thermal agent holding sheet 13, the thermal agent 50 is approximately equal to the width of the surface sheet 7a (or the absorber 11) in the width direction W in a plan view. It is arranged in a slightly larger range, spanning between both ends in the longitudinal direction (L). In another embodiment, the thermal agent 50 is disposed over the entire central portion 25 excluding the peripheral edge portion of the thermal agent holding sheet 13 in plan view. Thereby, the effect of the warming agent 50 extends to a much wider area. In another embodiment, the thermal agent 50 is disposed throughout the thermal agent holding sheet 13 including the peripheral edge portion in plan view. In another embodiment, the thermostat 50 extends in the longitudinal direction L and is arranged in a plurality of stripes arranged at predetermined intervals in the width direction W. This makes it easier to apply the warming agent. In another embodiment, the warming agent 50 does not include a solvent component. In another embodiment, the warming body 5 has a support sheet for supporting the warming agent holding sheet 13 on the non-skin side of the warming agent holding sheet 13 . In another embodiment, the thermal body 5 does not include the thermal agent 50 in the thermal agent holding sheet 13, and therefore the thermal agent holding sheet 13 serves as a heat retention sheet to keep the lower abdomen warm. In this case, a separate solvent layer 50a is formed. Additionally, the planar shape of the warming agent 50 is arbitrary.

In this embodiment, the absorber 11 contains the warming agent 52 (functional agent). The warming agent 52 is disposed on the skin-side surface of the absorber 11 in a plurality of stripe-shaped (continuous or intermittent) portions extending in the longitudinal direction L and lining up in the width direction W. In this case, the range in the width direction W in which the thermal agent 52 is disposed is approximately within the range in the width direction W of the topsheet 7a. Although the position of the thermostat 52 is different from the thermostat 50, its properties are the same. In another embodiment, the warming agent 52 is disposed at another location of the absorbent body 11, for example, on the surface or inside the non-skin side. In another embodiment, the absorber 11 does not include the warming agent 52. In this embodiment, the solvent component of the warming agent 52 and the solvent component of the solvent layer 52a (the solvent component) are the same. Therefore, the warming agent 52 exists at the location where the solvent layer 52a exists. By sharing the solvent components of both, the distance between the herbal medicine material layer 45 or the warming agent 52 and the skin surface of the wearer can be shortened, and the thickness can be reduced to improve wearing comfort.

In this embodiment, the liquid-permeable sheet 7 (sheet member) contains the warming agent 51 (functional agent). The warming agent 51 is applied to a plurality of stripe-shaped (continuous or intermittent) portions extending in the longitudinal direction (L) and lined up in the width direction (W) on the non-skin side surface of the liquid-permeable sheet 7. It is placed. In this case, the range in the width direction W in which the temperature reducer 51 is disposed is approximately within the range in the width direction W of the absorber 11. Although the position in which the temperature reduction agent 51 is arranged is different from the temperature reduction agent 50, its properties are the same. In another embodiment, the warming agent 51 is disposed at another location of the liquid-permeable sheet 7, for example, on the surface on the skin side. In another embodiment, the liquid-permeable sheet 7 does not contain the warming agent 51. In this embodiment, the solvent component of the warming agent 51, the solvent layer 51a (solvent component), and the solvent layer 51b (solvent component) are the same. Therefore, the warming agent 51 exists at the location where the solvent layers 51a and 51b exist. By sharing these solvent components, the distance between the herbal medicine material layers 45, 47 or the warming agent 51 and the skin surface of the wearer can be shortened, and the thickness can be reduced to improve wearing comfort.

In this embodiment, the warming components of the warming agent 50, the warming agent 51, and the warming agent 52 are the same as each other. In another embodiment, at least one of the warming components of the warming agent 50, the warming agent 51, and the warming agent 52 is different from the others. In addition, in this embodiment, the solvent components of the warming agent 50, the warming agent 51, and the warming agent 52 are the same as each other. In another embodiment, at least one of the solvent components of the warming agent 50, the warming agent 51, and the warming agent 52 is different from the others. Moreover, in another embodiment, at least one of the warming components of the warming agent 50, the warming agent 51, and the warming agent 52 generates heat itself, and the body of the person wearing the sanitary napkin 1 or a heat-generating component that heats the vicinity thereof. In addition, when the sanitary napkin 1 has a warming agent, it may contain at least one of the warming agent 50, the warming agent 51, and the warming agent 52.

In the sanitary napkin 1, the liquid-impermeable sheet 9 (second sheet member) is a liquid-impermeable sheet that overlaps the absorber 11 in the thickness direction T. In another embodiment, the liquid-impermeable sheet 9 also has no breathability (it is non-breathable). Therefore, the sanitary napkin 1 allows the air existing in the area closer to the skin than the liquid-impermeable sheet 9 to the non-skin side of the liquid-impermeable sheet 9, that is, to the outside of the sanitary napkin 1. It is structured to be difficult to escape. In other words, the sanitary napkin 1 is configured to make it difficult for air warmed by the effect of warmth to escape to the outside of the sanitary napkin 1.

The sanitary napkin 1 has adhesive portions on both the absorbent body 3 and the warm body 5 for fixing the sanitary napkin 1 to the wearer's clothes. One side of the adhesive portion is fixed to the liquid-impermeable sheet 9, and the other side is temporarily fixed to the individual packaging sheet 41 of the sanitary napkin 1. Among these, the absorbent body 3 has adhesive portions 73 disposed in a region overlapping with the absorber 11 in a plan view, extending, for example, along the longitudinal direction L, and intermittently arranged in the width direction W. ) and an adhesive portion 71 extending along the longitudinal direction L is disposed at approximately the center of the wing portion 17 in the width direction W. On the other hand, in the thermal body 5, adhesive portions 72 are disposed at both end regions in the width direction W. In another embodiment, the other side of the adhesive portion is temporarily fixed to the release sheet fixed to the individual packaging sheet 43.

As shown in FIG. 1, the individual package (sanitary napkin 1 + individual packaging sheet 41) has a first longitudinal fold line F1 (example: left fold line) and a second longitudinal fold. It has a line F2 (example: right fold line), a first fold line F3 in the width direction (example: front fold line), and a second fold line F4 in the width direction (example: rear fold line). The longitudinal first fold line F1 and the longitudinal second fold line F2 extend along the longitudinal direction L and are arranged parallel to each other at predetermined intervals from one side of the width direction W to the other side. there is. The first fold line F3 in the width direction and the second fold line F4 in the width direction extend along the width direction W, and are arranged parallel to each other at predetermined intervals from one side in the longitudinal direction L to the other side. there is. That is, there are two longitudinal fold lines and two width direction fold lines. However, the first fold line F3 in the width direction is disposed at the front of the sanitary napkin 1, and the second fold line F4 in the width direction is disposed at the rear of the sanitary napkin 1. The first fold line F3 in the width direction is located at the front end of the absorbent main body 3 and the rear end of the warm sensing main body 5. Specifically, the first fold line F3 in the width direction is located closer to the center line CW in the width direction than the front end edge 11E1 in the longitudinal direction L of the absorber 11. The first fold line F3 in the width direction and the second fold line F4 in the width direction are located ahead and behind the outlet contact area 21 in the longitudinal direction L so as to avoid the outlet contact area 21. . Additionally, in other embodiments, there are no longitudinal fold lines. In another embodiment, there is one or three or more transverse fold lines.

And, when the sanitary napkin 1 is individually packaged, along with the individual packaging sheet 41, the first longitudinal fold line F1 and the second longitudinal fold line F2 are used as the base axis. , the portions (a pair of outer portions) outside of both fold lines in the width direction W are each folded toward the surface on the skin side. Subsequently, the sanitary napkin 1 folded together with the individual packaging sheet 41 has the first fold line F3 in the width direction and the second fold line F4 in the width direction as the main axis, and the sanitary napkin 1 is folded in a longitudinal direction from both fold lines. The outer portions of (L) are each folded toward the surface on the skin side. After that, one end of the individual packaging sheet 41 is fixed to the individual packaging sheet 41 opposing it with a fixing tape 43. Thereby, an individual package of the sanitary napkin 1 is formed. And, when the sanitary napkin 1 is used, that is, when the individual packaging is opened, the sanitary napkin 1 is opened in the opposite order to when the individual packaging is opened.

Additionally, the sanitary napkin 1 has a plurality of pressing portions 31 and 33. The plurality of pressing portions 31 are arranged continuously or intermittently in a curved shape, mainly in the absorbent body 3, to surround the excrement port contact area 21. The plurality of compression portions 33 are distributed and arranged in a dot shape in the area surrounded by the plurality of compression portions 31 in the absorbent body 3. The compressed portions 31 and 33 are formed by compressing the liquid-permeable sheet 7 and the absorber 11 (and the warming agent holding sheet 13 in the overlapping portion 15) from the skin side toward the non-skin side. Additionally, the shape and arrangement of the plurality of pressing portions 31 and 33 are arbitrary. In another embodiment, in the thermal body 5, the liquid-permeable sheet 7 and the thermal agent holding sheet 13 (also the absorbent body 11 in the overlapping portion 15) are pressed from the skin side to the non-skin side. It has one or a plurality of compression parts formed by doing so. The shape of the pressing portion is arbitrary.

Additionally, the sanitary napkin 1 has a seal portion 29. The seal portion 29 joins and seals the liquid-permeable sheet 7 and the liquid-impermeable sheet 9 at their peripheral edges 27 by a known method such as heat sealing. In the sanitary napkin 1, the non-skin side surface of the liquid-permeable sheet 7 and the skin side surface of the absorbent body 11 and the warming agent retaining sheet 13 are joined with an adhesive (e.g., a hot melt adhesive) or the like. , the non-skin side surface of the absorber 11 and the warming agent retaining sheet 13 and the skin side surface of the liquid impermeable sheet 9 are joined with an adhesive (same type) or the like.

In the sanitary napkin 1, the herbal medicine material having a water-soluble component and a lipophilic component in the herbal medicine material layer 45 (, 47) and the lipophilic solvent in the solvent layer 51a (, 51b) are aligned in the thickness direction (T ) (in other embodiments, a planar direction is also possible. Hereinafter also referred to as “thickness direction (T), etc.”), and is located on at least one of the absorber 11 and the liquid-permeable sheet 7. Therefore, in the area where the herbal medicine material overlaps the lipophilic solvent in the thickness direction (T), etc., body fluid is excreted into the sanitary napkin 1 and transfers and diffuses into the liquid-permeable sheet 7 and the absorber 11. , part of the body fluid passes through herbal medicine ingredients and lipophilic solvents. As a result, as the body fluid flows, migrates and diffuses, the lipophilic solvent also migrates and diffuses, coming into contact with at least a portion of the herbal medicine material. Thereby, the lipophilic component of the herbal medicine material can be dissolved in the lipophilic solvent. Then, the lipophilic solvent containing the lipophilic component diffuses or volatilizes, allowing the lipophilic solvent to reach the wearer's skin. Alternatively, when the lipophilic solvent containing the lipophilic component is contained in moisture such as body fluids or sweat, for example, in the form of an oil film on the approximate surface of the moisture, the moisture becomes vapor or is used as a sanitary napkin ( 1) By diffusing back to the skin side due to the body pressure applied, the lipophilic solvent along with moisture can reach the wearer's skin. In other words, the lipophilic component of the herbal medicine material can reach the skin of the wearer.

On the other hand, the area (VM1), etc., where the herbal medicine material of the herbal medicine material layer 45 (, 47) does not overlap with the lipophilic solvent of the solvent layer (51a) (, 51b) in the thickness direction (T), etc. (even if it is a partially overlapping region) (possible), when the body fluid moves and diffuses inside the liquid-permeable sheet 7 and the absorber 11, a part of the body fluid reaches the herbal medicine material without passing through the lipophilic solvent. Alternatively, sweat or the like released from the skin diffuses within the liquid-permeable sheet 7 and reaches the herbal medicine material. In other words, the moisture such as body fluids and sweat flows, migrates and diffuses, and comes into contact with the herbal medicine material. By these means, the water-soluble components of herbal medicine materials can be dissolved in moisture such as body fluids and sweat. At that time, since the lipophilic solvent does not exist nearby, it is possible to prevent the lipophilic solvent from covering the herbal medicine material and making it difficult for moisture to reach the herbal medicine material. Then, the moisture containing the water-soluble component becomes vapor or diffuses toward the skin by the body pressure applied to the sanitary napkin 1, thereby causing the moisture containing the water-soluble component to be deposited on the wearer's skin. can be reached. In other words, the water-soluble components of the herbal medicine material can reach the skin of the wearer.

Here, even if the herbal medicine or the extract of the herbal medicine (hereinafter also referred to as “herbal medicine, etc.”) contained in the herbal medicine material is one type, the herbal medicine, etc. is not only a (water-soluble) component that easily fuses with moisture, but also fuses with oil. It may contain ingredients that are prone to becoming lipophilic (lipophilic). In addition, there are multiple types of herbal medicines included in herbal medicine materials, and these multiple types of herbal drugs are not only herbal drugs with (water-soluble) components that are easily soluble in moisture, but also (lipophilic) components that are easily soluble in oil. It may include herbal medicines having . Even if the sanitary napkin 1 containing such an herbal medicine material, that is, the herbal medicine material is a sanitary napkin 1 containing both water-soluble and lipophilic components, as described above, the herbal medicine material contains both lipophilic and water-soluble components. It becomes possible to easily allow the ingredients to reach the skin of the wearer.

By these means, in the sanitary napkin 1, not only the water-soluble components of the herbal medicine material but also the lipophilic component easily reaches the skin of the wearer, thereby improving the effects of the herbal medicine material, such as blood flow and circulation. It can have a warming effect on the body.

Next, a preferred method of using the sanitary napkin 1 according to this embodiment will be described.

When the wearer wears the sanitary napkin (1), the sanitary napkin (1) must be worn (e.g., shorts) so that the outlet contact area 21 of the absorbent body 11 of the absorbent body 3 corresponds to the wearer's outlet. ) and fix it on. Thereby, the sanitary napkin 1 is placed on the clothing so that the warming agent retaining sheet 13 of the warming body 5 corresponds to the lower abdomen of the wearer, and the herbal medicine material layer 45 of the absorbent body 3 corresponds to the excretion opening. It is fixed. Then, the sanitary napkin 1 is placed in a state in which the skin-side surface of the warming body 5 is in contact with the skin of the wearer's lower abdomen, and the skin-side surface of the absorbent body 3 is in contact with the skin near the wearer's excretion opening. It is used.

In other words, the sanitary napkin 1 is equipped with the warming agent retaining sheet 13 when the absorbent body 3 is placed on clothing so that the outlet contact area 21 of the absorbent body 11 is in contact with the wearer's outlet. It has the same shape as being placed in a position corresponding to the lower abdomen of the ruler. Therefore, the distance between the outlet contact area 21 of the absorbent body 11 of the absorbent body 3 and the warm agent holding sheet 13 of the thermal body 5 is the distance between the wearer's outlet and the lower abdomen (on the skin surface). distance) is approximately the same.

In this embodiment, the thermal agent 50 (functional agent) of the thermal agent holding sheet 13 contains a thermal component that activates the TRP channel and a solvent component. Therefore, when the sanitary napkin 1 is fixed to clothing and used, the warming agent 50 contained in the warming agent holding sheet 13 penetrates the liquid-permeable sheet 7 and comes into contact with the wearer's skin. Thus, on the wearer's skin, the TRP channel at the part of the warm agent contacting the warm component is efficiently activated, and a warm feeling can be efficiently provided to the wearer's lower abdomen.

By providing a sense of warmth to the wearer's lower abdomen, the TRP channel at the part in contact with the warm agent that is in contact with the warm component of the skin of the wearer's lower abdomen is activated, and as a result, heat is generated from the part in contact with the warm agent through the sympathetic nervous system. It can be expected to increase the temperature of the contact area of the warming component on the person's skin. As a result, it is expected to warm the area close to the wearer's uterus, excrete the pain substance prostaglandin, and relieve the wearer's menstrual pain. By warming the area close to the wearer's uterus, it is expected to alleviate the wearer's premenstrual syndrome, sensitivity to cold, and menopausal disorders. By promoting blood circulation (promoting lymph flow), it is expected to discharge waste, improve coldness, improve fat burning, and improve immunity. Additionally, when the effect of the herbal medicine material is to warm the body by improving blood flow or blood circulation, the sanitary napkin 1 can further warm the body due to the synergistic effect of the warming agent and the herbal medicine material.

In this embodiment, as a preferred aspect, the solvent layer 51a is located on the skin side of the herbal medicine material layer 45. Therefore, when the body fluid is excreted on the sanitary napkin 1 and migrates and spreads inside the liquid-permeable sheet 7 and the absorber 11, the body fluid and the lipophilic solvent can reliably pass through the herbal medicine material. Therefore, the lipophilic component of the herbal medicine material can be dissolved in the lipophilic solvent, thereby allowing the lipophilic component of the herbal medicine material to reach the wearer's skin more easily.

In this embodiment, as a preferred embodiment, in addition to the solvent layer 51a being located on the skin side of the herbal medicine material layer 45, the solvent layer 52a is further positioned on the non-skin side of the herbal medicine material layer 45. Therefore, when the body fluid is excreted on the sanitary napkin 1 and migrates and spreads inside the liquid-permeable sheet 7 and the absorber 11, the body fluid and the lipophilic solvent can pass through the herbal medicine material more reliably. Therefore, the lipophilic component of the herbal medicine material can be further dissolved in the lipophilic solvent, and thereby more of the lipophilic component of the herbal medicine material can be allowed to reach the wearer's skin.

The central portion of the sanitary napkin 1 in the width direction W contacts the wearer's excretory opening and the area near it, that is, the sensitive skin area. Therefore, in this embodiment, as a preferred aspect, the solvent layers 51a (, 52a) are not disposed in the central portion of the sanitary napkin 1 in the width direction W. That is, the oriental medicine material (lipophilic component of) of the oriental medicine material layer 45 exists, but there is a region VM1 (, VM2) in which the oleophilic solvent of the solvent layer 51a (, 52a) does not exist. . For this reason, it can be difficult to transfer the lipophilic component of the herbal medicine material to the area where the sensitive skin area comes into contact. Thereby, it is possible to allow the lipophilic component of the herbal medicine material to reach areas other than the central portion in the width direction W of the sanitary napkin 1, while preventing the component from directly reaching the sensitive skin area. In addition, it is conceivable that the herbal medicine material (a water-soluble component) is present in the central portion of the sanitary napkin 1 in the width direction W, and that the component is likely to migrate to the excretion opening and the area near it. However, since that area is an area where body fluid from the excretion opening is directly excreted, the amount of the components moving into the excretion opening and the area near it is suppressed to a certain extent.

In this embodiment, as a preferred embodiment, a warming agent 51 (or a warming agent 52) having a warming function is further provided, which is located on at least one of the absorber 11 and the liquid-permeable sheet 7. Therefore, the herbal medicine material is soaked by air containing moisture such as sweat generated near the skin where the body temperature has risen due to the effect of the warming agent 51 (or the warming agent 52), thereby increasing its surface area, thereby increasing the surface area of the herbal medicine material. It is easy to release the components. In addition, since the lipophilic solvent can be warmed by the air warmed by the effect of the warming agent 51 (or the warming agent 52), the components of the herbal medicine material dissolved in the lipophilic solvent are removed from moisture and/or It can be easily volatilized with a lipophilic solvent or alone. These allow the ingredients of herbal medicine ingredients to reach the wearer's skin more easily. Accordingly, when the effect of the herbal medicine material is to improve blood flow or blood circulation and warm the body, the sanitary napkin 1 can further warm the body due to the synergistic effect of the warming agent and the herbal medicine material.

In the present embodiment, as a preferred embodiment, in plan view, the front (dorsal side) of the sanitary napkin 1 in the longitudinal direction L (can also be the back (dorsal side) in other embodiments) compared to the absorbent body 11 in the sanitary napkin 1. , also referred to as “anterior (dorsal) side, etc.”) and further provided with a warming agent holding sheet 13 containing another warming agent 50 having a warming function. In plan view, the liquid-permeable sheet 7 extends to the front (dorsal side) or the like in the longitudinal direction (L) of the absorber 11 and overlaps the temperature-sensitive agent retaining sheet 13 in the thickness direction (T). It is located closer to the skin than the holding sheet 13. Therefore, when the sanitary napkin 1 is attached to the wearer, the wearer's dorsal side (in other embodiments, the dorsal side is also possible. Hereinafter also referred to as the "dorsal back") is warmed with the warming agent 50. can do. Therefore, the components of the herbal medicine material can reach the skin of the wearer, and the dorsal side and the like can be warmed by other warming agents located on the front (ventral side) and the like.

In another embodiment, the sanitary napkin 1 is located on at least one of the thermal agent holding sheet 13 and the liquid-permeable sheet 7, and contains another herbal medicine material having a water-soluble component and a lipophilic component. It is provided with the herbal medicine material layer 47, and another solvent layer 51b (, 50a) containing another lipophilic solvent, located on at least one of the warming agent holding sheet 13 and the liquid-permeable sheet 7. And, a part of the other herbal medicine material layer 47 and a part of the other solvent layer 51b (, 50a) overlap in the thickness direction T, etc. That is, in the sanitary napkin 1, on the front side (dorsal side) of the absorber 11 in the longitudinal direction L, etc., other herbal medicine materials and other lipophilic solvents partially overlap in the thickness direction T, etc., thereby providing a warm feeling. It is located on at least one of the second holding sheet 13 and the liquid-permeable sheet 7. Therefore, when the sanitary napkin 1 is worn on the wearer, the wearer's front (dorsal) side is warmed with the warming agent 50, and the area near the skin where the body temperature has risen due to the effect of the warming agent 50 is warmed. The air containing moisture such as sweat generated can soak other herbal medicine ingredients, increase the surface area, and make it easier to release the ingredients of other herbal medicine ingredients. In addition, since the lipophilic solvent can be warmed by the air warmed by the effect of the warming agent 50, the components of other herbal medicine materials dissolved in the lipophilic solvent can be added together with water and/or the solvent, or alone. , it can be easily volatilized. By these means, the components of other herbal medicine materials on the front side in the longitudinal direction L can be made more likely to reach the skin on the front side in the longitudinal direction of the wearer.

In addition, in a preferred embodiment in this embodiment, the warming agents 50, 51, and 52 include a warming component that causes the wearer to perceive a warm sensation, and a solvent component that dissolves or disperses the warming component, and the solvent component is a parenteral component. It is an oily solvent. Therefore, the solvent component of the sensitizers 50, 51, and 52 can be used as the solvent layer 50a, 51a, 51b, and 52a, and there is no need to form a separate solvent layer, or the area of the solvent layer Alternatively, the thickness can be reduced. Thereby, the distance between the herbal medicine material layers 45, 47 and/or the warming agents 50, 51, and 52 and the skin surface of the wearer can be shortened, so these herbal medicine material layers 45, 47 and/or the warming agents 50, 51, and 52 can be shortened. It is possible to make it easier for the agents 50, 51, and 52 to reach the wearer's skin.

As oriental medicine, there exist products in which multiple types of herbal medicines or extracts of these herbal medicines are mixed to increase medicinal efficacy. Therefore, in the present embodiment, as a preferred embodiment, the herbal medicine material uses a herbal medicine that is a mixture of a herbal medicine containing a water-soluble component or an extract of the herbal medicine and a herbal medicine or an extract of the herbal medicine having a lipophilic component. Even in this case, in the present absorbent article, the water-soluble components are dissolved in moisture such as body fluids and sweat, and the lipophilic components are dissolved in a lipophilic solvent, thereby allowing the components of these herbal medicine materials to reach the wearer's skin more easily. . Therefore, even if the herbal medicine material is an herbal medicine that is a mixture of a plurality of herbal medicines or extracts of the herbal medicines, the components of each herbal medicine or the extracts of each herbal medicine can be effectively used without separating these herbal medicines or the extracts of the herbal medicines.

In the sanitary napkin 1 of the present embodiment, as a preferred embodiment, the distance between the width direction center line CW and the front end edge 11E1 of the absorber 11 in the longitudinal direction L is It is configured to be longer than the distance between the front edge 11E1 and the front edge of the sanitary napkin 1. Therefore, in the area on the front side of the sanitary napkin 1 in the longitudinal direction L, a sufficient area of the absorber 11 capable of absorbing body fluid can be secured in the longitudinal direction L. Therefore, when the sanitary napkin 1, which has a warm body 5 on the front side in the longitudinal direction L and has a relatively long front portion, is attached to underwear, there is concern about the front end protruding. Therefore, even if the wearer mounts the sanitary napkin 1 with the sanitary napkin 1 shifted backwards more than necessary, the area of the absorber 11 can be sufficiently secured in the area on the front side of the sanitary napkin 1, so that It can prevent leakage of body fluids.

(Second Embodiment)

The configuration of the sanitary napkin 1a according to this embodiment will be described. The sanitary napkin 1a according to the present embodiment differs from the sanitary napkin 1 according to the first embodiment in that it does not have a warm body 5. Simply put, the sanitary napkin 1a has a configuration excluding the warm body 5 from the sanitary napkin 1. Below, the differences between the sanitary napkin 1a and the sanitary napkin 1 will be mainly explained.

6 to 9 are diagrams showing a structural example of the sanitary napkin 1a according to this embodiment. Figure 6 is a plan view showing the sanitary napkin 1a in an unfolded state. FIG. 7 is a cross-sectional view taken along the longitudinal center line CL of the sanitary napkin 1a shown in FIG. 6. Fig. 8 is a schematic diagram showing the arrangement of the solvent layer 51a and the like in the liquid-permeable sheet 7 of the sanitary napkin 1a. Fig. 9 is a schematic diagram showing the arrangement of the solvent layer 52a of the sanitary napkin 1a.

The herbal medicine material layer 45a of the sanitary napkin 1a according to this embodiment overlaps the range from one end to the other end of the absorber 11 in the longitudinal direction L and the thickness direction T. It is different from the herbal medicine material layer 45 of the sanitary napkin 1 according to the first embodiment in that it is disposed in . By arranging the herbal medicine material layer 45a over a longer range in the longitudinal direction L, the function of the herbal medicine material can be further improved. In another embodiment, the herbal medicine material layer 45a is arranged in the same manner as the herbal medicine material layer 45 in the first embodiment. Moreover, in another embodiment, the sanitary napkin 1a is further provided with the same warm body 5 as that in the first embodiment.

(Each material in sanitary napkin (1), etc.)

Next, each material, etc. in the sanitary napkin 1 (including the sanitary napkin 1a; the same applies hereinafter) in each embodiment will be explained.

In each of the above-described embodiments, the herbal medicine material layer 45 (, herbal medicine material layer 45a) included in the sanitary napkin 1 contains an herbal medicine material having a water-soluble component and a lipophilic component, The solvent layer (another solvent layer) contains a lipophilic solvent.

Here, the herbal medicine material is a material containing an herbal medicine, and the herbal medicine is an agent containing an herbal medicine (prescription) and herbal medicine. Herbal medicines are preparations that have medicinal properties made by processing and adjusting natural materials (e.g. plants, animals, minerals) in a specific way. Oriental herbal medicine is a combination of multiple herbal medicines. In addition, the herbal medicine material may be a medically, pharmaceutically, or physiologically acceptable herbal medicine or an extract extracted from the herbal medicine, and there are no particular restrictions on the herbal medicine constituting the herbal medicine, its combination, or the mixing ratio. Examples of herbal medicine materials include herbal medicines or herbal medicines described in the "New General Guide to Oriental Medicine Prescriptions" (edited by the Japan Oriental Herbal Medicine Association, published by Jiho Co., Ltd.), or extracts extracted from these herbal medicines or herbal medicines. Specifically, examples of oriental herbal remedies include Gyeji Bokryeong-hwan, Kami Soyo-san, Angelica Peony-san, Ongyeong-tang, Gung-gui Gyo-ae-tang, Peony Licorice-tang, Danggwi-sa Station Gaosuyu Ginger-tang, Doin Seung-gi-tang, Rhubarb Mokdanpi-tang, and Ojeok-san. Herbal medicines include glue, aleaf, dandelion, licorice, gilgyeong, jisil, cinnamon, cucurbita, and osuyu. , Posthumous name, Seshin, Sanchija, Rehmannia glutinosa, Peony, Ginger, Cheongung, Creation, Rhubarb, Daejo ( Daesang (澤瀉), dermis (陳皮), donggwaja (冬瓜子), Angelica (當歸), Daoin (桃仁), ginseng (人蔘), Macmundong (麥門冬), peppermint (薄荷), banha Examples include (半夏), Guritdae, Baekchul (白朮), Bokryeong (茯笭), Mangcho (芒硝), Mokdanpi (牧丹皮), Ephedra (麻黃), and Moktong (木通).

The lipophilic (oil-soluble, fat-soluble) components in these herbal medicine materials are not particularly limited as long as they are soluble in lipophilic solvents. Examples of such lipophilic components include fat-soluble polyphenols, gingerol, shogaol, and zingerone. Fat-soluble polyphenols can be extracted, for example, from angelica root, angelica root, and peony with a lipophilic solvent. Gingerol and the like (components that warm the body) can be extracted, for example, from ginger using a lipophilic solvent.

On the other hand, there are no particular restrictions on the water-soluble components in these herbal medicine materials as long as they are soluble in moisture from body fluids, sweat, etc. Examples of such water-soluble components include water-soluble polyphenols and peoniflorin. Water-soluble polyphenols can be extracted by moisture from, for example, Angelica, Angelica, and Peony. Peoniflorin (analgesic ingredient) can be extracted, for example, from peony by water.

The lipophilic solvent is not particularly limited as long as it can dissolve the lipophilic component of the herbal medicine material. Examples of lipophilic solvents include fats and oils. Examples of oils and fats include natural oils such as vegetable oil and animal oil, and hydrocarbons. Examples of natural oils include fatty acid esters such as triglycerides, palm oil, and linseed oil. Examples of hydrocarbons include paraffins such as liquid paraffin. In addition, the lipophilic solvent does not necessarily have to be in a liquid form, and may be disposed in a solid form on any material of the sanitary napkin 1 or may be volatile depending on the temperature. In addition, the lipophilic solvent may be in a liquid form during the manufacturing process of the sanitary napkin 1, but may be in a solid form upon completion of the sanitary napkin 1 or during subsequent storage or sale. However, when used, it returns to the liquid form due to an increase in ambient temperature due to body temperature, etc.

In each of the above-described embodiments, the warming agent holding sheet 13, the liquid-permeable sheet 7, and the absorber 11 include a warming agent 50 containing a warming component that activates the TRP channel and a solvent component; It has a warming agent (51) and a warming agent (52).

The thermosensitivity agents 50, 51, 52 include, for example, a thermosensitivity component and a solvent component that activate TRP channels (temperature receptors). The warming component is not particularly limited as long as it activates the TRP channel, and examples include agonists for TRPV1 receptors and agonists for TRPV3 receptors, with agonists for TRPV1 being preferred. This is because the TRPV1 receptor has a high activation temperature threshold exceeding 43°C, and can provide a high sense of warmth to the wearer.

The thermal component is preferably a plant-derived compound from the viewpoint of the wearer's sense of security. As warming components, for example, capsicoside, capsaicin, capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, nonivamide, etc.), capsanthin, benzyl nicotinic acid, nicotinic acid β- Butoxyethyl, N-acylvanilamide, nonanoic acid vanillyl amide, polyhydric alcohol, red pepper powder, red pepper tincture, red pepper extract, nonanoic acid vanillyl ether, vanillyl alcohol alkyl ether derivatives (examples: vanillyl ethyl ether, var. (nilyl butyl ether, vanillyl pentyl ether, vanillyl hexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratryl alcohol derivatives, substituted benzyl alcohol derivatives, substituted benzyl alcohol alkyl ether, vanillin propylene glycol acetal, Examples include ethyl vanillin propylene glycol acetal, ginger extract, ginger oil, gingerol, zingerone, hesperidin, and pyrrolidone carboxylic acid, and any combinations thereof. Among these, the warming component is preferably not capsaicin from the viewpoint of the wearer having difficulty feeling pain, and is preferably a vanillyl alcohol alkyl ether derivative (e.g., vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, vanillyl hexyl). ether), ginger extract, ginger oil, gingerol, and zingerone, and any combination thereof are more preferred.

The solvent component is not particularly limited as long as it can contain a warmth component, and examples include lipophilic solvents and hydrophilic solvents. These solvent components can dissolve, disperse, etc. the warming components. Examples of lipophilic solvents include fats and oils. Examples of oils and fats include natural oils (e.g. fatty acid esters such as triglycerides, palm oil, linseed oil, etc.), hydrocarbons (e.g. paraffin (e.g. liquid paraffin)), etc. Examples of hydrophilic solvents 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. Among these, as the solvent component, fats and oils (lipophilic solvent) or alcohol (hydrophilic solvent) are preferable from the viewpoint of easy control of volatility, and especially ease of lowering volatility. Additionally, from the viewpoint of difficulty in inhibiting water absorption, it is preferable that the solvent component is a lipophilic solvent. By making the solvent component of the warming agent a lipophilic solvent, it can also be used as a lipophilic solvent for herbal medicine materials, thereby making the sanitary napkin 1 thinner and softer, and improving wearing comfort.

In addition, the warming agent 51 of the liquid-permeable sheet 7 or the warming agent 52 on the surface of the absorber 11 may be applied to the lower layer (e.g., the absorber 11, the absorber (11), depending on the type of body fluid and the position to which it is applied. It is desirable to coexist with a durable hydrophilic emulsion (durable hydrophilic agent) that has the property of being difficult to leak into the lower part of 11). That is, it is preferable that the solvent component contains a durable hydrophilic emulsion. There is no particular limitation on the durable hydrophilic emulsion, and those coated or rolled into fibers can be used in the art. Examples of durable hydrophilic agents include alkyl phosphate ester salts having 10 to 30 carbon atoms, betaine compounds having 10 to 30 carbon atoms, mixtures of sulfuric acid ester salts or sulfonate salts, mixtures of alkyl phosphate ester salts and polyether-modified silicone, etc. can be mentioned. Therefore, it is possible to prevent the warming agents 51 and 52 from moving to the lower layer due to body fluids. In other words, the warming agent can be kept relatively close to the skin. Thereby, it becomes possible to further improve the sustainability of the warmth.

The concentration of the warming component of the warming agent (50 to 52) is preferably 1 to 50 mass%, more preferably 3 to 30 mass%, and still more preferably 5 to 15 mass%. This is in terms of the effect of warmth. In the sanitary napkin 1, the basis weight of the warming component in the warming agents 50 to 52 is preferably 0.001 to 30 g/m2, more preferably 0.01 to 20 g/m2, and still more preferably is 0.1 to 10 g/m2. This is to provide warmth to the wearer.

Additionally, when the warming agents 50 to 52 contain a heat-generating component as a warming component, there is no particular limitation as to the heat-generating component as long as the heat-generating component itself generates heat. Examples of heat-generating components include metal powders such as iron (using heat of oxidation), acidic substances and alkaline substances (using heat of neutralization), and inorganic salts (using heat of hydration). When a heat-generating component is used, the wearer's skin can be realistically warmed when the sanitary napkin 1 is worn, and the wearer can definitely feel warmth.

The warming agent 50, the warming agent 51, and the warming agent 52 have water disintegration properties in order to prevent the sanitary napkin 1 from volatilizing or moving to another area until it is used. ) may be protected by a protective material such as microcapsules. Microcapsules contain a functional agent, and when they come in contact with liquid (e.g. acupuncture points, urine, sweat), they collapse and release the functional agent to the outside. The released functional agent exerts a predetermined function on the wearer by being vaporized by the wearer's body temperature or by contacting the wearer's skin.

Materials for microcapsules include, for example, sugars such as monosaccharides (e.g. glucose), disaccharides (e.g. sucrose) and polysaccharides (e.g. dextrin, glucomannan, sodium alginate, water-soluble starch), gelatin, and water-soluble polymers (e.g. polyvinyl). alcohol, polyvinyl acetate), etc.

Microcapsules are commercially available, for example, INCAP (trademark) available from Symrise. Additionally, microcapsules can be manufactured, for example, by dissolving the microcapsule material in water to form an aqueous solution, mixing a functional agent and a surfactant in the aqueous solution, and drying the aqueous solution under reduced pressure while spraying.

In the sanitary napkin 1, the warming agent 50 to 52 is, in addition to the warming component and solvent component described above, at least one other type of agent having a desired effect within a range that does not impede the effect of providing a warming sensation to the wearer. May contain ingredients. Examples of such at least one other ingredient include drugs such as antibacterial agents, skin astringents, and anti-inflammatory agents, vitamins, amino acids, zeolite, hyaluronic acid, collagen, petrolatum, trehalose, pH adjusters, moisturizers, and fragrances.

Unlike the heating agent that generates heat itself, the warming agent of the sanitary napkin (1) is difficult to cause low-temperature burns, and the adhesive portion (72) is difficult to soften, so it is difficult to soften the sanitary napkin (1) after use. This is preferable because it is difficult for the adhesive portion 72 or the like to remain when removed from underwear, etc.

In the sanitary napkin 1, the material of the liquid-permeable sheet 7 is not particularly limited as long as it is liquid-permeable, and examples include fabric (e.g., non-woven fabric, woven fabric, knitted fabric), perforated film, etc. As the fabric, non-woven fabric is preferable from the viewpoint of ease of manufacturing the sanitary napkin 1. Nonwoven fabrics include, for example, airlaid pulp, air-through nonwoven fabric, spunbond nonwoven fabric, point bond nonwoven fabric, spunlace nonwoven fabric, needle punched nonwoven fabric, melt blown nonwoven fabric, and combinations thereof (example: SMS). Among them, as a nonwoven fabric, an air-through nonwoven fabric is preferable. The liquid-permeable sheet 7 preferably has a basis weight of 5 to 100 g/m2, more preferably 10 to 50 g/m2.

Fibers constituting the fabric include, for example, natural fibers, synthetic fibers, and semi-synthetic fibers. Examples of natural fibers include pulp fibers and regenerated cellulose fibers. Examples of regenerated cellulose fibers include rayon fibers. Examples of semi-synthetic fibers include semi-synthetic cellulose fibers such as acetate fibers. Examples of synthetic fibers include thermoplastic fibers. Thermoplastic fibers include, for example, polyolefin polymers such as polyethylene and polypropylene, polyester polymers such as polyethylene terephthalate (PET), polybutylene terephthalate, and polypentylene terephthalate, and nylon 6 and nylon 6,6. Fibers formed from polyamide-based polymers, acrylic polymers, polyacrylonitrile-based polymers, modified products thereof, or combinations thereof may be included. Examples of the perforated film include those in which a plurality of perforations are formed in a sheet of polyethylene or polypropylene.

Additionally, the top sheet 7a is preferably formed of hydrophilic fibers (eg, cotton, rayon, wool, silk). Thereby, moisture including sweat can be easily drawn into and retained in the constituent fibers. This can make it difficult for moisture to remain on the surface of the constituent fibers, make it difficult for moisture to come into contact with the skin, and make it difficult to feel cold on the skin. Thereby, it becomes possible to further improve the sustainability of the warmth.

In the sanitary napkin 1, the material for the liquid-impermeable sheet 9 is not particularly limited as long as it is liquid-impermeable and non-breathable. This is to make it difficult for air warmed by the warming effect of the warming agent 50 to dissipate from the area between the liquid-impermeable sheet 9 and the skin. Materials for the liquid-impermeable sheet 9 include, for example, synthetic resin films such as polyethylene or polypropylene, synthetic resin films bonded to nonwoven fabrics such as spunbond or spunlace, multi-layer nonwoven fabrics such as SMS, etc. A synthetic resin film having non-breathable properties is preferred. The liquid-impermeable sheet 9 preferably has a basis weight of 10 to 50 g/m2, more preferably 15 to 30 g/m2.

In the sanitary napkin 1, the material for the warming agent retaining sheet 13 includes, for example, materials listed as the material for the liquid-permeable sheet 7, or a porous resin sheet such as a sponge sheet, and the warming agent 50. Examples include those that can be impregnated. Specifically, when the solvent component of the warming agent 50 is a lipophilic solvent, examples include fabrics of synthetic fibers, such as non-woven fabrics, woven fabrics, knitted fabrics, etc., preferably non-woven fabrics of synthetic fibers. When the solvent component of the sensitizer is a hydrophilic solvent, examples include fabrics made of cellulose fibers, such as non-woven fabrics, woven fabrics, knitted fabrics, etc., and preferably tissue made of pulp fibers and airlaid pulp. there is. In addition, as another embodiment, when a thermal insulation main body with a thermal insulation function is used instead of the thermal insulation main body 5, the material of the thermal insulation sheet replacing the thermal agent holding sheet 13 is, for example, the thermal insulation agent holding sheet 13. Examples of the materials include those listed, and in this case, the warming agent 50 is not impregnated.

In the sanitary napkin 1, materials for the absorbent body 11 (absorbent core) include, for example, pulp fibers and highly absorbent polymers. When the absorber 11 has a core wrap, the material of the core wrap may be, for example, tissue. The basis weight of the absorber 11 is, for example, 10 to 500 g/m2, and is preferably 100 to 400 g/m2.

In the sanitary napkin 1, the material for the adhesive portions 71, 72, 73, etc. is a hot melt adhesive, such as styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS), styrene- pressure-sensitive or heat-sensitive adhesives mainly made of rubber such as isoprene-styrene (SIS) or olefin such as linear low-density polyethylene; Examples include water-soluble adhesives containing water-soluble polymers (e.g., polyvinyl alcohol, carboxymethyl cellulose, gelatin, etc.) or water-swellable polymers (e.g., polyvinylacetate, sodium polyacrylate, etc.).

In the sanitary napkin 1, the material of the individual packaging sheet 41 includes, for example, polyolefin-based polymers such as polyethylene and polypropylene. The individual packaging sheet 41 may include an airtight layer from the viewpoint of improving airtightness. Materials for the airtight layer include, for example, ethylene vinyl alcohol copolymer, vinylidene chloride-based polymers, such as vinylidene chloride methyl acrylate copolymer, polyvinyl alcohol, nylon, such as nylon 6, aluminum foil, and base film (polyethylene terephthalate). phthalate, etc.) on which alumina, silica, etc. are deposited.

The absorbent article (e.g., sanitary napkin) of the present invention is not limited to the above-described embodiments, and may be made by combining the embodiments or applying known techniques within the scope without departing from the purpose and spirit of the present invention. It is possible to do so.

1: Sanitary napkin 7: Liquid-permeable sheet (sheet member)
9: Liquid impermeable sheet 11: Absorber
51, 52: Warming agent 60: Absorber compression portion (absorbent concave portion)
67: Sheet compression portion (sheet member concave portion)

Claims (9)

An absorbent article having a longitudinal direction, a width direction, and a thickness direction, comprising an absorbent body, a sheet member overlapping the absorbent body in the thickness direction, located closer to the skin than the absorber body, and having liquid permeability,
An herbal medicine material layer located on at least one of the absorber and the sheet member and containing an herbal medicine material having a water-soluble component and a lipophilic component;
A solvent layer located on at least one of the absorber and the sheet member and containing a lipophilic solvent.
Equipped with
A portion of the herbal medicine material layer and a portion of the solvent layer overlap in the thickness direction, or one of the portion of the herbal medicine material layer and a portion of the solvent layer is embedded in the other in the longitudinal direction or the width. Absorbent articles that overlap in one direction. The absorbent article according to claim 1, wherein the solvent layer is located closer to the skin than the herbal medicine material layer. The absorbent article according to claim 2, wherein the solvent layer is located not only on a skin side of the herbal medicine material layer but also on a non-skin side of the herbal medicine material layer. The absorbent article according to any one of claims 1 to 3, wherein the solvent layer is disposed on both sides of the central portion in the width direction. The absorbent article according to any one of claims 1 to 3, further comprising a warming agent having a warming function and positioned on at least one of the absorbent body and the sheet member. The warming agent according to any one of claims 1 to 3, which is located at least one of the front and rear sides in the longitudinal direction of the absorbent material in the absorbent article in plan view and has a warming function. It is further provided with a warmth member including,
In plan view, the sheet member extends to at least one of the front and rear sides in the longitudinal direction relative to the absorber, overlaps the warm member in the thickness direction, and is located closer to the skin than the warm member. The method of claim 6, further comprising: another herbal medicine material layer located on at least one of the warmth member and the sheet member and comprising another herbal medicine material having a water-soluble component and a lipophilic component;
Another solvent layer located on at least one of the thermal member and the sheet member and containing another oleophilic solvent.
It is further provided with,
A part of the other herbal medicine material layer and a part of the other solvent layer overlap in the thickness direction, or one of the part of the other herbal medicine material layer and a part of the other solvent layer is embedded in the other side in the longitudinal direction or the above Absorbent articles that overlap in the width direction. The method of claim 5, wherein the warming agent is:
A warming component that causes the wearer to perceive a sense of warmth,
Solvent component that dissolves or disperses the warming component
Including,
An absorbent article wherein the solvent component is the lipophilic solvent. The herbal medicine material according to any one of claims 1 to 3, wherein the herbal medicine material comprises a herbal medicine or an extract of the herbal medicine containing the water-soluble component, and a herbal medicine or an extract of the herbal medicine having the lipophilic component. Absorbent articles.