JP7179072B2 - absorbent article - Google Patents

Description

The present invention relates to absorbent articles.

Absorbent articles comprising herbal medicinal materials are known. For example, Patent Literature 1 discloses an absorbent article in which an intermediate absorbent body containing a herbal medicine material is arranged between a topsheet and a base absorbent body. In this absorbent article, a powdery herbal medicine material having a desired particle size distribution and average particle shape is arranged in the intermediate absorbent body. As the herbal medicine material, herbal medicines such as Manchuria, Toki and Kobushi are mixed at a ratio of 1:1:1, for example, and used.

Japanese Patent No. 4261593

If the herbal medicine material is arranged on the non-skin side of the surface sheet as in the absorbent article of Patent Document 1, it seems difficult to allow the components of the herbal medicine material to reach the wearer's skin. However, even in that case, if the component has the property of being easily compatible with water, that is, it is water-soluble, the herbal medicine material may come into contact with body fluids (eg: menstrual blood), which are liquid excretions, or water such as sweat. allows the component to dissolve in the water. Therefore, when the moisture reaches the skin, it is possible for the ingredients to reach the wearer's skin.

However, there are cases in which components of herbal medicine materials have properties that are difficult to absorb into water, that is, they are water-insoluble. For example, if the component has a property of being easily compatible with oil, that is, lipophilicity, even if the herbal medicine material comes into contact with water such as body fluids or sweat, it is difficult for the component to dissolve in the water. In that case, even if the moisture reaches the skin, it is difficult for the component to reach the wearer's skin. Therefore, even if such a herbal medicinal material is arranged in an absorbent article, it may be difficult to sufficiently exhibit its function as a herbal medicinal material.

This also applies to herbal medicinal materials that have both water-soluble and lipophilic components. Such herbal medicine materials include, for example, one or more types of crude drugs having water-soluble components or extracts thereof, and one or more types of crude drugs having lipophilic components or extracts thereof. is mentioned. Furthermore, such herbal medicine materials include one or more types of crude drugs and extracts thereof having both water-soluble and lipophilic components.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is an absorbent article comprising a herbal medicinal material containing not only a water-soluble component but also a lipophilic component, so that the components of the herbal medicinal material can be easily applied to the wearer's skin. To provide an absorbent article that can be reached.

The absorbent article of the present invention has a longitudinal direction, a width direction and a thickness direction. a permeable sheet member, wherein the herbal medicine material layer is positioned on at least one of the absorbent body and the sheet member and contains a herbal medicine material having a water-soluble component and a lipophilic component; , a solvent layer containing a lipophilic solvent located in at least one of the absorbent body and the sheet member, wherein a portion of the herbal medicine material layer and a portion of the solvent layer overlap in the thickness direction; Or an absorbent article that overlaps in the longitudinal direction or the width direction.

According to the present invention, there is provided an absorbent article comprising a herbal medicinal material containing not only a water-soluble component but also a lipophilic component, so that the components of the herbal medicinal material can easily reach the wearer's skin. possible absorbent articles can be provided.

1 is a plan view showing a configuration example of a sanitary napkin according to a first embodiment; FIG. 2 is a cross-sectional view along the longitudinal centerline in FIG. 1; FIG. FIG. 2 is a bottom view showing a configuration example of the sanitary napkin according to the first embodiment; FIG. 4 is a schematic diagram showing the arrangement of solvent layers in the liquid-permeable sheet according to the first embodiment; FIG. 4 is a schematic diagram showing the arrangement of solvent layers in the absorber according to the first embodiment; FIG. 4 is a plan view showing a configuration example of a sanitary napkin according to a second embodiment; FIG. 7 is a cross-sectional view along the longitudinal centerline in FIG. 6; FIG. 5 is a schematic diagram showing the arrangement of solvent layers of a liquid-permeable sheet according to a second embodiment; FIG. 6 is a schematic diagram showing the arrangement of solvent layers of an absorbent body according to a second embodiment;

Specifically, the present disclosure relates to the following aspects.
[Aspect 1]
an absorbent body having a longitudinal direction, a width direction and a thickness direction, and a liquid-permeable sheet member overlapping the absorbent body in the thickness direction, positioned closer to the skin than the absorbent body, and having liquid permeability; a herbal medicine material layer located on at least one of the absorbent body and the sheet member and containing a Chinese herbal medicine material having a water-soluble component and a lipophilic component; and the absorbent body and the sheet member and a solvent layer containing a lipophilic solvent, wherein part of the herbal medicine material layer and part of the solvent layer overlap in the thickness direction, or the longitudinal direction or the width Directionally overlapping, absorbent article.

In this 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 overlap in the plane direction (longitudinal direction or width direction), Located on at least one of the absorbent body and the sheet member.
Therefore, in the region where the herbal medicine material overlaps with the lipophilic solvent in the thickness direction or the planar direction, when the body fluid is excreted into the absorbent article and migrates and diffuses in the sheet member and the absorbent body, part of the body fluid is Via traditional Chinese medicine materials and lipophilic solvents. As a result, the lipophilic solvent also migrates and diffuses along with the flow (migration and diffusion) of the body fluid, and comes into contact with at least a part of the herbal medicine material. Thereby, the lipophilic components of the herbal medicine material can be dissolved in the lipophilic solvent. Then, the lipophilic solvent containing the lipophilic component diffuses or volatilizes, so that the lipophilic solvent can reach the wearer's skin. Alternatively, when the lipophilic solvent containing the lipophilic component is contained in water such as body fluids or sweat, for example, in a state where it is contained in the form of an oil film on the approximate surface of the water, the water becomes vapor or is absorbed. The lipophilic solvent can reach the wearer's skin together with moisture by diffusing back to the skin side due to the body pressure applied to the sexual article. That is, the lipophilic component of the herbal medicine material can reach the wearer's skin.
On the other hand, in a region where the herbal medicine material does not overlap with the lipophilic solvent in the thickness direction or the planar direction (partial overlapping region is also possible), when the body fluid moves and diffuses in the sheet member and the absorbent, part of the body fluid Part reaches the herbal medicine material without going through the lipophilic solvent. Alternatively, sweat released from the skin diffuses in the sheet member and reaches the herbal medicine material. That is, water such as body fluids and perspiration comes into contact with the herbal medicine material due to flow (migration/diffusion). These allow the water-soluble components of herbal medicine materials to dissolve in water such as body fluids and sweat. At that time, since the lipophilic solvent does not exist in the vicinity, it is possible to prevent the lipophilic solvent from covering the herbal medicinal material and making it difficult for water to reach the herbal medicinal material. Then, the moisture containing the water-soluble component becomes vapor or diffuses toward the skin due to the body pressure applied to the absorbent article, so that the moisture containing the water-soluble component spreads to the wearer's skin. can be reached. That is, the water-soluble component of the herbal medicine material can reach the wearer's skin.
As a result, in an absorbent article in which the herbal medicinal material contains not only a water-soluble component but also a lipophilic component, both components of the herbal medicinal material can easily reach the wearer's skin. As a result, the present absorbent article can exhibit the effect of the herbal medicine material, for example, the effect of improving blood flow and blood circulation to warm the body.

[Aspect 2]
The absorbent article according to aspect 1, wherein the solvent layer is positioned closer to the skin than the herbal medicine material layer.
In this absorbent article, the solvent layer is positioned closer to the skin than the herbal medicine material layer. Therefore, when the body fluid is excreted into the absorbent article and migrates and diffuses in 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 medicinal material can be dissolved by the lipophilic solvent, thereby allowing the lipophilic component of the herbal medicinal material to reach the skin of the wearer.

[Aspect 3]
The absorbent article according to aspect 2, wherein the solvent layer is further located on the non-skin side of the herbal medicine material layer.
In this absorbent article, the solvent layer is present not only at a position closer to the skin than the herbal medicine material layer, but also at a position closer to the skin than the herbal medicine material layer. Therefore, when the body fluid is excreted into the absorbent article and migrates and diffuses in the sheet member and the absorbent body, the body fluid and the lipophilic solvent can more reliably pass through the herbal medicine material. Therefore, the lipophilic component of the herbal medicinal material can be further dissolved in the lipophilic solvent, thereby allowing the lipophilic component of the herbal medicinal material to reach the wearer's skin even more.

[Aspect 4]
4. The absorbent article according to any one of aspects 1 to 3, wherein the solvent layer is not arranged in the widthwise central portion.
The central portion in the width direction of the absorbent article abuts on the wearer's excretory opening and the area in the vicinity thereof, that is, the sensitive skin area. Therefore, in the present absorbent article, the solvent layer is not arranged in the central portion in the width direction of the absorbent article. Therefore, it is possible to make it difficult for the lipophilic component of the herbal medicine material to migrate to the area where the sensitive skin area contacts. This allows the lipophilic component of the herbal medicine material to reach areas other than the central portion in the width direction of the absorbent article, while preventing the component from directly reaching the sensitive skin area.

[Aspect 5]
5. The absorbent article according to any one of aspects 1 to 4, further comprising a warming agent having a warming function located in at least one of the absorbent body and the sheet member.
The present absorbent article further comprises a warming agent having a warming function. Therefore, air containing moisture such as sweat generated near the skin whose body temperature has risen due to the effect of warmth softens the herbal medicine material, increases its surface area, and makes it easier to release the ingredients of the herbal medicine material. be able to. Furthermore, 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 can be volatilized together with water and/or the lipophilic solvent, or alone. can be made easier. These allow the components of the herbal medicine material to reach the wearer's skin. In addition, when the effect of the herbal medicinal material is to warm the body by improving the blood flow and blood circulation, the present absorbent article can further warm the body due to the synergistic effect of the warming agent and the herbal medicinal material.

[Aspect 6]
The sheet further comprises a warming member positioned at least one of the front side and the rear side in the longitudinal direction of the absorbent body in the absorbent article in plan view and containing another warming agent having a warming function. In a plan view, the member extends at least one of the front side and the rear side in the longitudinal direction from the absorbent body, overlaps with the warming member in the thickness direction, and is closer to the skin than the warming member. 6. The absorbent article according to any one of aspects 1-5, wherein the absorbent article is located.
In the present absorbent article, the other warming agent is positioned on at least one of the front side of the absorbent body in the longitudinal direction, i.e., the abdomen side of the wearer, and the rear side of the absorbent body in the longitudinal direction, i.e., the back side of the wearer. It is further provided with a warming member including. Therefore, when the absorbent article is worn by the wearer, at least one of the wearer's ventral side and back side can be warmed by the warming agent. This allows the components of the herbal medicine material to reach the wearer's skin, and at least one of the abdomen and back can be warmed by other warming agents located on at least one of the ventral side and the dorsal side.

[Aspect 7]
another herbal medicinal material layer positioned on at least one of the warming member and the sheet member and containing another herbal medicinal material having a water-soluble component and a lipophilic component; and at least one of the warming member and the sheet member and another solvent layer containing another lipophilic solvent, wherein a part of the other herbal medicine material layer and a part of the other solvent layer overlap in the thickness direction. The absorbent article described.
In this absorbent article, at least one of the front side and the back side in the longitudinal direction of the absorbent body, the other herbal medicine material and the other lipophilic solvent are arranged in the thickness direction or in the plane direction (longitudinal direction or width direction). It is positioned on at least one of the warming member and the sheet member while partially overlapping. Therefore, when the absorbent article is worn by the wearer, while warming at least one portion of the wearer's ventral side or back side with the warming agent, perspiration occurs near the skin whose body temperature has increased due to the warming effect. Humid air such as can soften other herbal medicinal materials and increase their surface area to facilitate the release of the components of other herbal medicinal materials. In addition, the air warmed by the effect of warming can warm other lipophilic solvents, so that the components of other herbal medicinal materials dissolved in other lipophilic solvents can be replaced by moisture and/or other lipophilic solvents. Together with or alone, it can facilitate volatilization. These allow components of other herbal medicinal materials to reach the wearer's skin on the front side in the longitudinal direction on at least one of the front side and the back side in the longitudinal direction.

[Aspect 8]
Aspects 5 to 5, wherein the warming agent contains a warming component that causes a wearer to perceive a warming sensation, and a solvent component that dissolves or disperses the warming component, and the solvent component is the lipophilic solvent. 8. The absorbent article according to any one of 7.
In the present 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 a solvent layer, and there is no need to provide a separate solvent layer. Alternatively, the area or thickness of the solvent layer can be reduced. Thereby, the distance between the herbal medicine material and/or the warming agent and the wearer's skin surface 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 wearer's skin.

[Aspect 9]
9. The absorbent article according to any one of aspects 1 to 8, wherein the herbal medicine material comprises a crude drug containing the water-soluble component and a crude drug containing the lipophilic component.
As herbal medicine materials, there are mixtures of a plurality of types of herbal medicines or extracts of the herbal medicines. Therefore, in the present absorbent article, as a herbal medicine material, a herbal medicine material in which a crude drug containing a water-soluble component or an extract of the crude drug and a crude drug having a lipophilic component or the extract of the crude drug are mixed is used. and Even in such a case, in the present absorbent article, by dissolving the water-soluble component in water and dissolving the lipophilic component in the lipophilic solvent, the component of the herbal medicine material can reach the wearer's skin more. can be done. Therefore, even if the herbal medicinal material is a mixture of a plurality of crude drugs or their extracts, the herbal medicines or their crude drug extracts are not separated, and each herbal drug or its components It can be used effectively.

Hereinafter, the absorbent article according to the embodiment will be described by taking a sanitary napkin provided with a herbal medicine material as an example. However, the absorbent article is not limited to that example, and other absorbent articles comprising herbal medicine materials may be used as long as they do not deviate from the gist of the present invention. Such absorbent articles include, for example, common sanitary napkins, pantiliners, incontinence pads, and disposable diapers with herbal materials.

(First embodiment)
The configuration of the sanitary napkin 1 according to this embodiment will be described. 1 to 5 are diagrams showing configuration examples of a sanitary napkin 1 according to this embodiment. FIG. 1 is a plan view showing a state in which an individual wrapping sheet 41 of a sanitary napkin 1 is opened and unfolded. FIG. 2 is a cross-sectional view of the sanitary napkin 1 shown in FIG. 1 (excluding the individual wrapping sheet 41) along the longitudinal center line CL (described later). FIG. 3 is a bottom view showing the sanitary napkin 1 (excluding the individual wrapping sheet 41). FIG. 4 is a schematic diagram showing the arrangement of solvent layers 51a and 51b (described later) and the like in the liquid-permeable sheet 7 of the sanitary napkin 1. As shown in FIG. FIG. 5 is a schematic diagram showing the arrangement of the solvent layers 50a and 52a (described later) of the sanitary napkin 1 and the like. The sanitary napkin 1 has a longitudinal direction L, a width direction W and a thickness direction T which are perpendicular to each other. In the sanitary napkin 1 depicted in FIG. 1 , the upper side of the drawing is the front side (front) or ventral side in the longitudinal direction L, and the lower side of the drawing is the rear side (rear side) or dorsal side of the longitudinal direction L. When the sanitary napkin 1 placed on a plane including the longitudinal direction L and the width direction W is viewed from the upper side in the thickness direction T, it is called "planar view", and the shape grasped in plan view is called "planar shape". An arbitrary direction within a plane including the longitudinal direction L and the width direction W is called a "planar direction". When the wearer wears the sanitary napkin 1, the sides in the thickness direction T that are relatively close to and far from the wearer's skin surface are referred to as the "skin side" and the "non-skin side", respectively. These definitions are commonly used for each material of the sanitary napkin 1 as well.

The individual wrapping sheet 41 has both ends in the longitudinal direction L that are longer than both ends in the longitudinal direction L of the sanitary napkin 1, and both ends in the width direction W that extend in the width direction of the sanitary napkin 1. It is longer outside in the width direction W than both ends of W. Therefore, when the sanitary napkin 1 is placed on the individual packaging sheet 41, it is placed so as not to protrude outside the individual packaging sheet 41 in plan view. Thereby, when the sanitary napkin 1 is folded together with the individual wrapping sheet 41, the sanitary napkin 1 can be wrapped so as not to protrude outside the individual wrapping sheet 41.例文帳に追加

The sanitary napkin 1 includes an absorbent main body 3 that absorbs bodily fluids (example: menstrual blood), which is mainly liquid excretion, and an absorbent main body 3 that is positioned on the front side (abdominal side) in the longitudinal direction L of the absorbent main body 3 so that the skin feels warm. and a warmth main body 5 that allows the user to perceive the That is, the sanitary napkin 1 is divided into an absorbent body 3 at the rear in the longitudinal direction L and a warming body 5 at the front in the longitudinal direction L. As shown in FIG. The absorbent main body 3 has a generally general sanitary napkin shape, and includes a pair of wing portions 17, 17 extending outward in the width direction W. As shown in FIG. The shape of the warming body 5 is not particularly limited, and examples thereof include triangles, rectangles, polygons (including cases where the corners are rounded and cases where the sides are curved), circles, ovals, the shape of an organism, or any of these. A combination is mentioned. In another embodiment, the warming main body 5 is positioned on the rear side (dorsal side) instead of on the front side (abdominal side) in the longitudinal direction L of the absorbent main body 3, or together with the front side (abdominal side). In yet another embodiment, the pair of wings 17, 17 are absent. In yet another embodiment, the warming body 5 is not provided.

The sanitary napkin 1 has a longitudinal center line CL (imaginary line) extending in the longitudinal direction L passing through the center of the width direction W, and a pair of wing portions 17, 17 connecting the center of the longitudinal direction L of each of the pair of wing portions 17, 17 to the width direction W. and a width direction center line CW (virtual line). However, if the wing portion 17 does not exist, the widthwise center line CW is a line that extends in the widthwise direction W in the longitudinal direction L and passes through the center of the excretory opening contact area 21 (described later) of the absorbent main body 3 . In this embodiment, both are assumed to match. Alternatively, when the absorber 11 has a so-called hourglass shape, the widthwise center line CW extends in the widthwise direction W through the position (excluding both ends) where the widthwise dimension of the absorber 11 is the smallest in the longitudinal direction L. Let the line extend. In the sanitary napkin 1, the direction and the side toward the longitudinal center line CL are the inward direction and the inner side in the width direction W, respectively, and the direction and the side away from it are the outward direction and the outer side in the width direction W, respectively. On the other hand, the direction and the side toward the center line CW in the width direction are defined as the inward direction and the inner side in the longitudinal direction L, respectively, and the direction and the side away from the width direction center line CW are defined as the outward direction and the outer side in the longitudinal direction L, respectively. These definitions are commonly used for each material of the sanitary napkin 1 as well.

The sanitary napkin 1 includes, in the absorbent body 3, a liquid-permeable sheet 7 that contacts the wearer's skin when worn, a liquid-impermeable sheet 9 that contacts clothes (underwear) when worn, a liquid-permeable sheet 7, and and an absorbent body 11 arranged between the liquid-impermeable sheets 9 . In addition, the sanitary napkin 1 includes, in the warming body 5, a liquid-permeable sheet 7 that contacts the wearer's skin when worn, a liquid-impermeable sheet 9 that contacts the wearer's clothes when worn, a liquid-permeable sheet 7, and and a warming agent holding sheet 13 arranged between the liquid impermeable sheets 9 . The warming agent holding sheet 13 is positioned on the front side in the longitudinal direction L of the absorber 11 . The liquid-permeable sheet 7 in the absorbent main body 3 and the liquid-permeable sheet 7 in the warming main body 5 are an integral sheet. The liquid-impermeable sheet 9 in the absorbent main body 3 and the liquid-impermeable sheet 9 in the warming main body 5 are integral sheets. However, the integral sheet includes not only the case where the material is one sheet but also the sheet obtained by combining and integrating a plurality of sheets. The absorbent body 11 in the absorbent main body 3 and the warming agent holding sheet 13 in the warming main body 5 are separate members. The overlapping portion 15 is formed by overlapping the front end portion of the absorbent body 11 in the longitudinal direction L with the rear end portion of the warming agent holding sheet 13 in the longitudinal direction L in the thickness direction T. As shown in FIG. That is, in the longitudinal direction L, the front edge 11E1 of the absorbent body 11 is located forward of the rear edge 13E2 of the warming agent holding sheet 13. As shown in FIG. In this case, the end of the absorbent body 11 is arranged on the end of the warming agent holding sheet 13 in the overlapping portion 15 . This is for suppressing leakage of bodily fluids forward in the longitudinal direction L.

In another embodiment, when the function of warmth is emphasized, the edge of the warming agent holding sheet 13 is arranged on the edge of the absorber 11 in the overlapping portion 15 . In still another embodiment, the end portions of the absorbent body 11 and the end portions of the warming agent holding sheet 13 do not overlap in plan view (the overlapping portion 15 does not exist), and the edges are in contact with each other, or separated. In yet another embodiment, the position of the front edge 11E1 in the longitudinal direction L of the absorbent body 11 overlaps with the position of the front edge 13E1 in the longitudinal direction L of the warming agent holding sheet 13, or more. also exist outside. In other words, the warming agent holding sheet 13 overlaps the absorber 11 over the entire length in the longitudinal direction L. As shown in FIG. In still another embodiment, the warming body 5 is replaced with a heat retaining body of the same shape, and the warming agent holding sheet 13 is replaced with a heat retaining sheet of the same shape that does not contain a warming agent.

The sanitary napkin 1 comprises, in at least one of the absorbent main body 3 and the warming main body 5, a herbal medicinal material layer containing a herbal medicinal material having a water-soluble component and a lipophilic component, and a solvent layer containing a lipophilic solvent. . In this embodiment, the sanitary napkin 1 includes a herbal medicine material layer 45 containing a herbal medicine material having a water-soluble component and a lipophilic component, and a solvent layer 51a containing a lipophilic solvent in the absorbent body 3. The herbal medicine material layer 45 has a substantially rectangular shape in plan view, and is positioned on the skin-side surface or inside of the absorbent body 11 in the thickness direction T. As shown in FIG. The herbal medicine material layers 45 are located on both sides of the longitudinal center line CL and on both sides of the width center line CW in plan view, that is, in the width direction W and the longitudinal direction of the absorbent body 3. Located in the central region of L. In this embodiment, all or part of the herbal medicine material layer 45 is positioned in a region including the excretory opening contact region 21 (described later) in plan view. 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. The planar shape of the herbal medicine material layer 45 is arbitrary.

The solvent layer 51a has a plurality of striped shapes extending in the longitudinal direction L and arranged at predetermined intervals in the width direction W in a plan view. To position. Part of the herbal medicine material layer 45 and part of the solvent layer 51a overlap in the thickness direction T, and part of the herbal medicine material layer 45 is located on the non-skin side of part of the solvent layer 51a. A portion of the herbal medicine material layer 45 and a portion of the solvent layer 51a are in direct contact with each other in the thickness direction T from the viewpoint of facilitating the elution of the lipophilic component into the lipophilic solvent. The solvent layer 51a extends outward in the longitudinal direction L and outward in the width direction W from the herbal medicine material layer 45 in plan view from the viewpoint that the lipophilic component easily contacts the lipophilic solvent. The sanitary napkin 1 has a region VM1 where part of the herbal medicine material layer 45 and part of the solvent layer 51a 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 facilitate the elution of the water-soluble component of the herbal medicine material into body fluids, sweat, and other moisture. As another embodiment, when the herbal medicine material layer 45 is positioned on the surface of the liquid-permeable sheet 7 on the non-skin side in the thickness direction T, the solvent layer 51a is positioned in the thickness direction T on the liquid-permeable sheet 7 is located on the skin side of the herbal medicine material layer 45 in . The planar shape of the solvent layer 51a is arbitrary.

The sanitary napkin 1 further comprises a solvent layer 52a containing a lipophilic solvent in the absorbent main body 3 . The solvent layer 52a has a plurality of striped shapes extending in the longitudinal direction L and arranged at predetermined intervals in the width direction W in a plan view. located on or inside the skin side of the Part of the herbal medicine material layer 45 and part of the solvent layer 52a overlap in the thickness direction T, and part of the herbal medicine material layer 45 is located on the skin side of part of the solvent layer 52a. A portion of the herbal medicine material layer 45 and a portion of the solvent layer 52a are in direct contact with each other in the thickness direction T from the viewpoint of facilitating the elution of the lipophilic component into the lipophilic solvent. The solvent layer 52a extends outward in the longitudinal direction L and outward in the width direction W of the herbal medicine material layer 45 in plan view from the viewpoint that the lipophilic component is easily brought into contact with the lipophilic solvent. The sanitary napkin 1 has a region VM2 where part of the herbal medicinal material layer 45 and part of the solvent layer 52a do not overlap in the thickness direction T, and thus a region where the herbal medicinal material exists but the lipophilic solvent does not exist. . This is to facilitate the elution of the water-soluble component of the herbal medicine material into body fluids, sweat, and other moisture. The planar shape of the solvent layer 52a is arbitrary.

Note that in another embodiment, one of the solvent layer 51a and the solvent layer 52a is provided and the other is not provided. In yet another embodiment, (a part of) the herbal medicine material layer 45 and at least one of (a part of) the solvent layer 51a and (a part of) the solvent layer 52a are formed on the non-skin side of the liquid-permeable sheet 7. , and/or the skin-side surface or inside of the absorbent body 11, located in substantially the same range in the thickness direction T. In that case, it can be said that a portion of the herbal medicine material layer 45 and at least one of a portion of the solvent layer 51a and a portion of the solvent layer 52a overlap in the planar direction (longitudinal direction or width direction). Such a state includes, for example, a state in which one of a portion of the herbal medicine material layer 45 and a portion of the solvent layer 51a (, 52a) is embedded in the other.

The sanitary napkin 1 includes another herbal medicine material layer 47 containing a Chinese herbal medicine material having a water-soluble component and a lipophilic component, and another solvent layer 51b containing a lipophilic solvent in the warming body 5 . The herbal medicine material layer 47 extends in the longitudinal direction L, has a plurality of striped shapes arranged at predetermined intervals in the width direction W, and is positioned on or inside the warming agent holding sheet 13 on the skin side in the thickness direction T. do. The herbal medicine material layer 47 is formed in a central area in the width direction W of the warming agent holding sheet 13 and extending between both edges in the longitudinal direction L in 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. The planar shape of the herbal medicine material layer 47 is arbitrary.

The solvent layer 51b extends in the longitudinal direction L, has a plurality of striped shapes arranged at predetermined intervals in the width direction W, and is located on the non-skin-side surface of the liquid-permeable sheet 7 in the thickness direction T. In the width direction W, the width of the solvent layer 51 b is greater 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 the part of the herbal medicine material layer 47 is located on the non-skin side of the part of the solvent layer 51b. A portion of the herbal medicine material layer 47 and a portion of the solvent layer 51b are in direct contact with each other in the thickness direction T from the viewpoint of facilitating the elution of the lipophilic component 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 facilitate the elution of the water-soluble component of the herbal medicine material into body fluids, sweat, and other moisture. As another embodiment, when the herbal medicine material layer 47 is positioned on the non-skin-side surface of the liquid-permeable sheet 7 in the thickness direction T, the solvent layer 51b is is located on the skin side of the herbal medicine material layer 47 in . Note that 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. As shown in FIG. The solvent layer 50a is formed on the non-skin side of the herbal medicine material layer 47 and the skin of the warming agent holding sheet 13 in the thickness direction T in a region excluding both ends in the width direction W of the warming agent holding sheet 13 in plan view. located on or inside the side. Part of the herbal medicine material layer 47 and part of the solvent layer 50a overlap in the thickness direction T, and part of the herbal medicine material layer 47 is located on the skin side of part of the solvent layer 50a. A portion of the herbal medicine material layer 47 and a portion of the solvent layer 50a are in direct contact with each other in the thickness direction T from the viewpoint of facilitating the elution of the lipophilic component into the lipophilic solvent. The solvent layer 50a extends outward in the width direction W from the herbal medicine material layer 47 in a plan view from the viewpoint that the lipophilic component is easily brought into contact with the lipophilic solvent. In another embodiment, the sanitary napkin 1 has a region in which 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 the lipophilic solvent is There are areas that do not exist. This is to facilitate the elution of the water-soluble component of the herbal medicine material into body fluids, sweat, and other moisture. The planar shape of the solvent layer 50a is arbitrary.

In another embodiment, one of the solvent layer 51b and the solvent layer 50a is provided and the other is not provided. In yet another embodiment, (a part of) the herbal medicine material layer 47 and at least one of (a part of) the solvent layer 51b and (a part of) the solvent layer 50a are formed on the non-skin side of the liquid-permeable sheet 7. , and/or the skin-side surface or inside of the warming agent holding sheet 13, and are located in substantially the same range in the thickness direction T. In that case, it can be said that a portion of the herbal medicine material layer 47 and at least one of a portion of the solvent layer 51b and a portion of the solvent layer 50a overlap in the planar direction (longitudinal direction or width direction). Such a state includes, for example, a state in which one of a portion of the herbal medicine material layer 47 and a portion of the solvent layer 51b (, 50a) is embedded in the other. 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 edge of the sanitary napkin 1 to the front edge 11E1 of the absorbent body 11 . On the other hand, the range in the longitudinal direction L of the warming body 5 is the range from the front edge 11E1 of the absorbent body 11 to the front edge of the sanitary napkin 1 . The range in the width direction W of the absorbent main body 3 and the warming main body 5 is both the full width range. In this case, it can be said that the overlapping portion 15 is included in the absorbent main body 3 and the rear end portion of the warming agent holding sheet 13 of the warming main body 5 in the longitudinal direction L extends into the absorbent main body 3 . In addition, in the longitudinal direction L, the absorbent body 3 has a front region 3a from the widthwise center line CW to the front edge 11E1 of the absorbent body 11, and a widthwise centerline CW to the rear edge of the sanitary napkin 1. and a rear region 3b. However, the front and rear edges of the sanitary napkin 1, the front and rear edges 11E1 and 11E2 of the absorbent body 11, and the front and rear edges 13E1 and 13E2 of the warming agent holding sheet 13 in the longitudinal direction L are , are the outermost positions in the longitudinal direction L. In the present embodiment, the edges 11E1 and 11E2 and the edges 13E1 and 13E2 are all at intersections with the longitudinal centerline CL.

In the present embodiment, in the sanitary napkin 1, the excretory opening contact area 21 is positioned slightly forward in the longitudinal direction L and in the center in the width direction W in plan view of the absorbent main body 3, and the rest of the area is positioned around it. A non-excretion opening contact area 23 is located as the area of . The excretory opening contact area 21 is an area that faces or contacts the excretory opening of the wearer when the sanitary napkin 1 is worn. The excretory opening contact area 21 is determined according to the type and application of the absorbent article. The excretory opening contact area 21 is, for example, slightly forward in the center of the absorbent body 11 in the longitudinal direction L and has a length of about 1/4 to 2/3 of the total length of the absorbent body 11 in the longitudinal direction L. , and has a width of about 1/3 to 3/4 of the total length in the width direction W of the absorbent body 11 at approximately the center of the absorbent body 11 . When there is a pair of wing portions 17, 17 as in the present embodiment, the excretory opening contact area 21 is formed on a line connecting the centers of the pair of wing portions 17, 17 in the longitudinal direction L to the width direction W. The center in the longitudinal direction L is located. Alternatively, when the absorbent body 11 has a so-called hourglass shape, the lengthwise direction L of the excretion opening contact area 21 is positioned at the position where the dimension in the widthwise direction W of the absorbent body is the smallest except for both ends in the longitudinal direction L of the absorbent body. is located at the center of However, positional deviation within a predetermined length range is allowed. The predetermined length is 5% of the length in the longitudinal direction L of the absorbent body 11 .

The liquid-permeable sheet (sheet member) 7 overlaps the absorber 11 in the thickness direction T, and includes a top sheet 7a and a pair of side sheets 7b, 7b joined to both sides in the width direction W of the top sheet 7a. I have. The dimension in the width direction W of the surface sheet 7 a is approximately the same as the dimension in the width direction W of the absorbent body 11 . Each side seat 7b includes a leak-proof wall 7W located at the inner end in the width direction W and extending along the longitudinal direction L. As shown in FIG. That is, the liquid-permeable sheet 7 includes a pair of leak-proof walls 7W, 7W. Each leak-proof wall 7W has an outer edge as a fixed end and an inner edge as a free end in the width direction W, and extends upward in the thickness direction T of the surface sheet 7a. . The pair of leak-proof walls 7W, 7W are formed such that their free ends can stand up toward the skin when the sanitary napkin 1 is worn. A pair of leak-proof walls 7W, 7W are formed on the absorbent main body 3 and the warming main body 5 to prevent body fluids from leaking mainly outward in the width direction W, and to reduce the warmth of the warming main body 5. The air warmed by the effect is suppressed from escaping to the outside in the width direction W and held.

In another embodiment, each of both ends in the width direction W of the surface sheet 7a includes a leak-proof wall 7W extending along the longitudinal direction L. As shown in FIG. In still another embodiment, the liquid-permeable sheet 7 does not have a pair of side sheets 7b, 7b. In yet another embodiment, the liquid-permeable sheet 7 does not have a pair of leak-proof walls 7W, 7W. In yet another embodiment, the liquid-permeable sheet 7 is in contact with the non-skin side of the surface sheet 7a, and thus overlaps with the absorbent body 11 in the thickness direction T, thereby diffusing body fluids in the planar direction. member). In yet another embodiment, the surface sheet 7a is positioned between a plurality of protrusions that extend continuously or intermittently along the longitudinal direction L, and adjacent protrusions that extend continuously or intermittently along the longitudinal direction L. and a plurality of intermittently extending recesses.

The absorbent body 11 includes an absorbent core (not shown) and a core wrap (not shown) that wraps the absorbent core. The absorber 11 is partitioned into a central region 62 located substantially in the center in the longitudinal direction L, a front region 61 adjacent to the front of the central region 62, and a rear region 63 adjacent to the rear of the central region 62. . Here, the central region 62 corresponds to the excretory opening contact region 21 and is located in a range further forward in the longitudinal direction L. As shown in FIG. The herbal medicine material layer 45 is located in the central region 62 . The basis weight of the central region 62 is higher than the basis weights of the front region 61 and the rear region 63 . Therefore, in the absorbent body 11, the basis weight of the region on the front side in the longitudinal direction L of the widthwise center line CW is higher than the basis weight of the region on the rearward side of the widthwise center line CW in the longitudinal direction L. That is, in the absorbent body 11, the basis weight of the area from the widthwise center line CW to the front edge 11E1 in the longitudinal direction L is the basis weight of the area from the widthwise center line CW to the rear edge 11E2 in the longitudinal direction L. higher than the quantity. As a result, the absorption amount in the excretory opening contact area 21 slightly forward from the center in the longitudinal direction L is increased, and the wearer's excretion opening is shifted slightly forward in the longitudinal direction L from the excretory opening contact area 21. Even when the sanitary napkin 1 is worn in this state, the absorbent body 11 can reliably absorb body fluids. In another embodiment, the basis weight of the absorbent body 11 is high in specific portions different from the above, or is substantially constant over the entire region. In another embodiment, absorbent body 11 does not use a core wrap.

The warming agent holding sheet 13 (functional layer; warming member) is composed of a single layer or a plurality of layers of sheets such as non-woven fabric, and contains a warming agent 50 (functional agent). The shape of the warming agent holding sheet 13 is not particularly limited as long as it can be arranged inside the peripheral edge portion 27 of the sanitary napkin 1 that suppresses leakage of the warming agent 50. For example, the shape of the warming body 5 is similar. A reduced shape is included. The warming agent 50 stimulates thermoreceptors (thermal receptors) in the skin without heating the body of the wearer of the sanitary napkin 1 or the vicinity thereof, thereby causing the wearer to perceive a warm sensation. It contains a component that senses warmth and further contains a solvent component that dissolves or disperses the component that senses warmth. The warming agent 50 is in the form of gas or liquid, and contains a fluid component or a volatile component that can move from the place where it is placed due to the influence of temperature, air pressure, external force, etc. For example, at least one of the warming component and the solvent component is Contains fluid or volatile components. Even if the warming agent-holding sheet 13 is arranged on the non-skin side of the liquid-permeable sheet 7, the warming agent 50 of the warming agent-holding sheet 13 elutes or volatilizes, for example, when the sanitary napkin 1 is worn. For example, the liquid permeable sheet 7 can be permeated, and the skin of the wearer's lower abdomen can be contacted. As a result, the warming component of the warming agent 50 stimulates the heat receptors in the skin, and the lower abdomen of the wearer can feel the warmth. In this embodiment, the solvent component of the warming agent 50 and (the solvent component of) the solvent layer 50a are the same. Therefore, the warming agent 50 exists at the position where the solvent layer 50a exists. By using both solvent components in common, the distance between the herbal medicine material layer 47 or the warming agent 50 and the wearer's skin surface can be shortened, and the thickness can be reduced to improve the wearing comfort.

In this embodiment, in the warming agent holding sheet 13, the warming agent 50 has a width in the width direction W that is approximately the same as or slightly larger than the width of the surface sheet 7a (or the absorbent body 11) in a plan view, and a width in the longitudinal direction L. is arranged in a range extending between both edges. In another embodiment, the warming agent 50 is arranged over the entire central portion 25 of the warming agent holding sheet 13 excluding the peripheral edge portion in plan view. As a result, the effect of the warming agent 50 extends over a wider area. In still another embodiment, the warming agent 50 is disposed on the entire warming agent holding sheet 13 including the peripheral edge portion in plan view. In yet another embodiment, the warming agent 50 is arranged in a plurality of stripes extending in the longitudinal direction L and arranged in the width direction W at predetermined intervals. It is easy to apply the warming agent. In yet another embodiment, the warming agent 50 does not contain a solvent component. In yet another embodiment, the warming body 5 has a support sheet that supports the warming agent-holding sheet 13 on the non-skin side of the warming agent-holding sheet 13 . In yet another embodiment, the warming body 5 does not include the warming agent 50 in the warming agent-retaining sheet 13, so the warming agent-retaining sheet 13 acts as a heat retaining sheet to keep the lower abdomen warm. In this case, the solvent layer 50a is separately formed. The planar shape of the warming agent 50 is arbitrary.

In this embodiment, the absorbent body 11 contains a warming agent 52 (functional agent). The warming agent 52 is arranged in a plurality of striped (continuous or intermittent) portions extending in the longitudinal direction L and arranged in the width direction W on the skin-side surface of the absorbent body 11 . In this case, the range in the width direction W in which the warming agent 52 is arranged is generally within the range in the width direction W of the topsheet 7a. The warming agent 52 is located at a different position than the warming agent 50, but has the same properties. In another embodiment, the warming agent 52 is disposed on yet another portion of the absorbent body 11, such as on or within the non-skin side. In yet another embodiment, absorbent body 11 does not include warming agent 52 . In this embodiment, the solvent component of the warming agent 52 and (the solvent component of) the solvent layer 52a are the same. Therefore, the warming agent 52 exists at the position where the solvent layer 52a exists. By sharing both solvent components, the distance between the herbal medicine material layer 45 or the warming agent 52 and the wearer's skin surface can be shortened, and the thickness can be reduced to improve the wearing comfort.

In this embodiment, the liquid-permeable sheet 7 (sheet member) contains a warming agent 51 (functional agent). The warming agent 51 is arranged in a plurality of striped (continuous or intermittent) portions extending in the longitudinal direction L and arranged in the width direction W on the non-skin side surface of the liquid permeable sheet 7 . In this case, the range in the width direction W in which the warming agent 51 is arranged is generally within the range in the width direction W of the absorbent body 11 . The warming agent 51 and the warming agent 50 are arranged in different positions, but have the same properties. In another embodiment, the warming agent 51 is arranged on another part of the liquid-permeable sheet 7, for example, on the skin-side surface. In still 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 is the same as (the solvent component of) the solvent layer 51a and the solvent layer 51b (the solvent component of). Therefore, the warming agent 51 exists at the positions where the solvent layers 51a and 51b exist. By sharing these solvent components, the distance between the herbal medicine material layers 45 and 47 and the warming agent 51 and the wearer's skin surface can be shortened, and the thickness can be reduced to improve the 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. In another embodiment, at least one of the warming components of warming agent 50, warming agent 51, and warming agent 52 is different from the rest. Further, in this embodiment, the solvent components of the warming agent 50, the warming agent 51, and the warming agent 52 are the same. In another embodiment, at least one of the solvent components of warming agent 50, warming agent 51, and warming agent 52 is different from the rest. Furthermore, 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 by itself, thereby warming the wearer of the sanitary napkin 1. containing a heat-generating component that heats the body or its vicinity. When the sanitary napkin 1 has a warming agent, at least one of the warming agent 50, the warming agent 51, and the warming agent 52 may be included.

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. As shown in FIG. In another embodiment, the liquid-impermeable sheet 9 is also non-breathable (non-breathable). Therefore, the sanitary napkin 1 has a structure in which it is difficult for the air existing in the area closer to the skin than the liquid-impermeable sheet 9 to escape to the non-skin side of the liquid-impermeable sheet 9, that is, to the outside of the sanitary napkin 1. It's becoming In other words, the sanitary napkin 1 has a structure in which it is difficult for the air warmed by the heat sensation to escape to the outside of the sanitary napkin 1 .

The sanitary napkin 1 has an adhesive portion for fixing the sanitary napkin 1 to the clothes of the wearer in both the absorbent body 3 and the warming body 5 . One surface of the adhesive portion is fixed to the liquid-impermeable sheet 9 , and the other surface is temporarily fixed to the individual packaging sheet 41 of the sanitary napkin 1 . Among them, the absorbent main body 3 includes, in a plan view, an adhesive portion 73 which is arranged in a region overlapping with the absorbent body 11, extends along the longitudinal direction L and is intermittently arranged in the width direction W, and the width of the wing portion 17. An adhesive portion 71 extending along the longitudinal direction L is arranged substantially in the central portion in the direction W. As shown in FIG. On the other hand, the heat-sensing main body 5 is provided with adhesive portions 72 at both end regions in the width direction W. As shown in FIG. In another embodiment, the other surface of the adhesive part is temporarily fixed to a 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 line F2 (example: right fold line). , a width direction first folding line F3 (example: front folding line) and a width direction second folding line F4 (example: rear folding line). The first longitudinal folding line F1 and the second longitudinal folding line F2 extend along the longitudinal direction L and are arranged parallel to each other at predetermined intervals from one side to the other side in the width direction W. The first width-direction folding line F3 and the second width-direction folding line F4 extend along the width direction W and are arranged parallel to each other at predetermined intervals from one side to the other side in the longitudinal direction L. That is, there are two longitudinal fold lines and two width direction fold lines. However, the first width-direction folding line F3 is arranged in front of the sanitary napkin 1, and the second width-direction folding line F4 is arranged behind the sanitary napkin 1. As shown in FIG. The first width-direction folding line F3 is located at the front end of the absorbent body 3 and the rear end of the warming body 5 . Specifically, the first widthwise folding line F3 is positioned closer to the widthwise center line CW than the front edge 11E1 in the longitudinal direction L of the absorbent body 11 . The first widthwise folding line F3 and the second widthwise folding line F4 are located on the front side and the rear side in the longitudinal direction L of the excretion opening contact area 21 so as to avoid the excretion opening contact area 21 . However, in another embodiment, there are no longitudinal fold lines. In still another embodiment, the number of width direction fold lines is one or three or more.

When the sanitary napkin 1 is individually wrapped, the sanitary napkin 1, along with the individual wrapping sheet 41, is positioned outside the first longitudinal folding line F1 and the second longitudinal folding line F2 in the width direction W (a pair of ) are each folded toward the skin-side surface. Next, the sanitary napkin 1 folded together with the individual wrapping sheet 41 has the first width-direction folding line F3 and the second width-direction folding line F4 as the base axis, and the portions outside the both folding lines in the longitudinal direction L are the skin-side surfaces. folded towards. After that, one end of the individual packaging sheet 41 is fixed to the opposing individual packaging sheet 41 with the fixing tape 43 . Thereby, an individual package of the sanitary napkin 1 is formed. When the sanitary napkin 1 is to be used, that is, when the individual packaging is opened, the procedure for individual packaging is reversed.

The sanitary napkin 1 also has a plurality of pressing portions 31 and 33 . The plurality of compressed portions 31 are arranged in a curved line continuously or intermittently so as to surround the excretory opening contact area 21 mainly in the absorbent body 3 . The plurality of compressed portions 33 are arranged in a dot-like manner in a region surrounded by the plurality of compressed portions 31 in the absorbent body 3 . The compressed portions 31 and 33 are formed by compressing the liquid permeable sheet 7 and the absorbent body 11 (and the warming agent holding sheet 13 in the overlapping portion 15) from the skin side toward the non-skin side. In addition, the shape and arrangement of the plurality of pressing portions 31 and 33 are arbitrary. In another embodiment, in the warming main body 5, the liquid-permeable sheet 7 and the warming agent holding sheet 13 (and the absorbent body 11 in the overlapping portion 15) are further pressed from the skin side to the non-skin side. with one or more presses. The shape of the pressing part is arbitrary.

The sanitary napkin 1 also 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 edge portions 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 surfaces of the absorbent body 11 and the warming agent holding sheet 13 are joined with an adhesive (eg, hot-melt adhesive) or the like. The non-skin side surfaces of the absorbent body 11 and the warming agent holding sheet 13 and the skin side surface of the liquid impermeable sheet 9 are joined with an adhesive (same as above) or the like.

In the sanitary napkin 1, the herbal medicinal material having water-soluble and lipophilic components in the herbal medicinal material layer 45 (47) and the lipophilic solvent in the solvent layer 51a (51b) extend in the thickness direction T (another implementation In terms of form, the planar direction is also possible (hereinafter also referred to as “thickness direction T, etc.”), and is located on at least one of the absorbent body 11 and the liquid-permeable sheet 7 . Therefore, in the region where the herbal medicine material overlaps with the lipophilic solvent in the thickness direction T or the like, when body fluid is excreted into the sanitary napkin 1 and migrates and diffuses in the liquid-permeable sheet 7 and the absorbent body 11, the body fluid Some go through herbal medicine materials and lipophilic solvents. As a result, the lipophilic solvent moves and diffuses as the body fluid flows, migrates and diffuses, and comes into contact with at least a part of the herbal medicine material. Thereby, the lipophilic components of the herbal medicine material can be dissolved in the lipophilic solvent. Then, the lipophilic solvent containing the lipophilic component diffuses or volatilizes, so that the lipophilic solvent can reach the wearer's skin. Alternatively, when the lipophilic solvent containing the lipophilic component is contained in water such as body fluids or sweat, for example, when it is contained in the form of an oil film on the approximate surface of the water, the water becomes vapor, or The body pressure applied to the napkin 1 causes the lipophilic solvent to reach the wearer's skin together with the moisture by diffusing it back to the skin side. That is, the lipophilic component of the herbal medicine material can reach the wearer's skin.

On the other hand, in the region VM1 where the herbal medicinal material of the herbal medicinal material layer 45 (47) does not overlap the lipophilic solvent of the solvent layer 51a (51b) in the thickness direction T or the like (a part of the overlapping region is also possible), body fluid When migrating and diffusing through the liquid-permeable sheet 7 and the absorbent body 11, part of the body fluid reaches the herbal medicine material without passing through the lipophilic solvent. Alternatively, sweat released from the skin diffuses through the liquid-permeable sheet 7 and reaches the herbal medicine material. That is, the water such as body fluids and perspiration flows, migrates, and diffuses to come into contact with the herbal medicine material. These allow the water-soluble components of herbal medicine materials to dissolve in water such as body fluids and sweat. At that time, since the lipophilic solvent does not exist in the vicinity, it is possible to prevent the lipophilic solvent from covering the herbal medicinal material and making it difficult for water to reach the herbal medicinal material. Then, the moisture containing the water-soluble component becomes vapor or diffuses toward the skin due to the body pressure applied to the sanitary napkin 1, so that the moisture containing the water-soluble component spreads to the wearer's skin. can be reached. That is, the water-soluble component of the herbal medicine material can reach the wearer's skin.

Here, even if the crude drug or the extract of the crude drug contained in the herbal medicine material (hereinafter also referred to as "herbal drug etc.") is one kind, not only the components that the crude drug etc. are easy to mix with water (water-soluble), It may contain (lipophilic) components that are easily compatible with oil. In addition, there are multiple types of herbal medicines, etc. contained in herbal medicine materials, and these multiple types of crude drugs, etc. are not only herbal medicines that have components that are easily compatible with water (water-soluble), but also are easily compatible with oil (lipophilic). It may contain herbal medicines with ingredients. Even if the sanitary napkin 1 containing such herbal medicinal material, that is, the sanitary napkin 1 containing both water-soluble and lipophilic components, the herbal medicinal material's lipophilic and water-soluble Both components can easily reach the wearer's skin.

As a result, in the sanitary napkin 1, not only the water-soluble component of the herbal medicine material but also the lipophilic component can easily reach the wearer's skin, and the effects of the herbal medicine material, such as blood flow and blood circulation, can be achieved. It can be effective in warming the body by improving the

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 is attached to the wearer's clothes (example: shorts) so that the excretion opening contact area 21 of the absorbent body 11 of the absorbent body 3 corresponds to the wearer's excretion opening. fixed. As a result, the sanitary napkin 1 is fixed to the clothing so that the warming agent holding sheet 13 of the warming body 5 corresponds to the wearer's lower abdomen, the herbal medicine material layer 45 of the absorbent body 3 corresponds to the excretion port, and so on. . 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 wearer's skin near the excretory opening. used.

In other words, in the sanitary napkin 1, when the absorbent main body 3 is placed on the wearer's clothes so that the excretion opening contact area 21 of the absorbent body 11 contacts the wearer's excretion opening, the warming agent holding sheet 13 is placed on the wearer's clothes. It has a shape to be placed at a position corresponding to the lower abdomen of the. Therefore, the distance between the excretory opening contact area 21 of the absorbent body 11 of the absorbent main body 3 and the warming agent holding sheet 13 of the warming main body 5 is the distance between the wearer's excretory opening and the lower abdomen (on the skin surface). distance).

In this embodiment, the warming agent 50 (functional agent) of the warming agent holding sheet 13 contains a warming component that activates TRP channels 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 permeates the liquid-permeable sheet 7 and comes into contact with the wearer's skin. In the wearer's skin, the TRP channel in the portion of the wearer's skin that is in contact with the warming agent can be efficiently activated, and a warm sensation can be efficiently imparted to the lower abdomen of the wearer.

By applying a warm sensation to the lower abdomen of the wearer, the TRP channel in the part of the skin of the wearer's lower abdomen that is in contact with the warming component is activated. , heat is generated from the part in contact with the warming agent, and it can be expected to raise the temperature of the part in contact with the warming component on the wearer's skin. As a result, it is expected that the region near the wearer's uterus will be warmed, the pain substance prostaglandin will be excreted, and the wearer's menstrual pain will be alleviated. By warming the part near the uterus of the wearer, it is expected that the premenstrual syndrome, sensitivity to cold, menopausal disorder, etc. of the wearer will be alleviated. By promoting blood circulation (promoting the flow of lymph), it is expected to discharge waste products, improve coldness, improve fat burning, and improve immunity. In addition, when the effect of the herbal medicine material is to warm the body by improving the blood flow and 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, the solvent layer 51a is positioned on the skin side of the herbal medicine material layer 45 as a preferred aspect. Therefore, when the body fluid is excreted into the sanitary napkin 1 and migrates and diffuses through the liquid-permeable sheet 7 and the absorbent body 11, the body fluid and the lipophilic solvent can reliably pass through the herbal medicine material. Therefore, the lipophilic component of the herbal medicinal material can be dissolved by the lipophilic solvent, thereby allowing the lipophilic component of the herbal medicinal material to reach the wearer's skin.

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

The central portion of the sanitary napkin 1 in the width direction W contacts the wearer's excretory opening and its vicinity, that is, the sensitive skin area. Therefore, in this embodiment, as a preferred aspect, the solvent layer 51a (, 52a) is not arranged in the central portion in the width direction W of the sanitary napkin 1 . That is, there is a region VM1 (, VM2) in which the herbal medicine material (the lipophilic component thereof) of the herbal medicine material layer 45 is present, but the lipophilic solvent of the solvent layer 51a (, 52a) is absent. Therefore, it is possible to make it difficult for the lipophilic component of the herbal medicine material to migrate to the area where the sensitive skin area contacts. This allows 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 (a water-soluble component of) an herbal medicine material exists in the central portion of the sanitary napkin 1 in the width direction W, and that component easily migrates to the excretory opening and its vicinity. However, since this region is a region where the bodily fluid is directly excreted from the excretion port, the amount of the component transferred to the excretion port and the region in the vicinity thereof is suppressed to some extent.

As a preferred aspect, this embodiment further comprises a warming agent 51 (or a warming agent 52) that is positioned on at least one of the absorbent body 11 and the liquid permeable sheet 7 and has a warming function. Therefore, air containing moisture such as sweat generated near the skin whose body temperature has risen due to the effect of the warming agent 51 (or the warming agent 52) softens the herbal medicine material and increases its surface area. It can facilitate the release of components of herbal medicine materials. Furthermore, the lipophilic solvent can be warmed by the air warmed by the effect of the warming agent 51 (or the warming agent 52). Together with the solvent or alone, it can facilitate volatilization. These allow the components of the herbal medicine material to reach the wearer's skin. Accordingly, when the effect of the herbal medicine material is to warm the body by improving the blood flow and 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, in plan view, the front side (abdominal side) in the longitudinal direction L (in another embodiment, the back side (dorsal side) is also possible from the absorbent body 11 in the sanitary napkin 1. Hereinafter, " It further includes a warming agent holding sheet 13 positioned on the front side (abdominal side, etc.) and containing another warming agent 50 having a warming function. The liquid-permeable sheet 7 extends to the front side (abdominal side) or the like in the longitudinal direction L of the absorber 11 in plan view, and overlaps the warming agent holding sheet 13 in the thickness direction T to hold the warming agent. It is positioned closer to the skin than the sheet 13 . Therefore, when the sanitary napkin 1 is worn by the wearer, the warming agent 50 is applied to the wearer's ventral side (in another embodiment, the dorsal side is also acceptable; hereinafter also referred to as "ventral side, etc."). can be warmed by Therefore, the component of the herbal medicine material can reach the wearer's skin, and the other warming agent positioned on the front side (abdominal side) or the like can warm the abdomen or the like.

As another embodiment, the sanitary napkin 1 is positioned on at least one of the warming agent-retaining sheet 13 and the liquid-permeable sheet 7, and contains other herbal medicine materials having water-soluble components and lipophilic components. It comprises a herbal medicine material layer 47 and another solvent layer 51b (50a) located on at least one of the warming agent holding sheet 13 and the liquid permeable sheet 7 and containing another lipophilic solvent. A portion of the other herbal medicine material layer 47 and a portion of the other solvent layer 51b (50a) overlap in the thickness direction T or the like. That is, in the sanitary napkin 1, the other herbal medicine material and the other lipophilic solvent partially overlap in the thickness direction T or the like on the front side (abdominal side) or the like in the longitudinal direction L of the absorbent body 11, It is positioned on at least one of the warming agent holding sheet 13 and the liquid permeable sheet 7 . Therefore, when the sanitary napkin 1 is worn by the wearer, while the warming agent 50 warms the wearer's front side (abdominal side) and the like, the warming agent 50 warms the area around the skin whose body temperature has risen. The resulting moist air, such as perspiration, can soften the other herbal medicinal materials, increase their surface area, and facilitate the release of the ingredients of the other herbal medicinal materials. Furthermore, since the lipophilic solvent can be warmed by the air warmed by the effect of the warming agent 50, the ingredients of other herbal medicines dissolved in the lipophilic solvent can be It can be easily volatilized. These allow components of other herbal medicine materials on the front side in the longitudinal direction L to reach the skin on the front side in the longitudinal direction of the wearer.

In addition, as a preferred aspect of the present 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. is a lipophilic solvent. Therefore, the solvent layers 50a, 51a, 51b, 52a can be used as the (solvent components of) the warming agents 50, 51, 52, and there is no need to provide a separate solvent layer, or the area or thickness of the solvent layer can be reduced. As a result, the distance between the herbal medicine material layers 45, 47 and/or the warming agents 50, 51, 52 and the wearer's skin surface can be shortened. , 52 can be made easier to reach the wearer's skin.

Chinese herbal medicines include mixtures of a plurality of kinds of herbal medicines or extracts of these herbal medicines in order to enhance efficacy. Therefore, as a preferred aspect of the present embodiment, the herbal medicine material is a herbal medicine in which a crude drug containing a water-soluble component or an extract of the crude drug and a crude drug having a lipophilic component or an extract of the crude drug are mixed. use. Even in such a case, in this absorbent article, by dissolving the water-soluble component in water such as body fluids and sweat, and by dissolving the lipophilic component in the lipophilic solvent, the component of the herbal medicine material can be absorbed by the wearer. It can be reached by the skin. Therefore, even if the herbal medicine material is a mixture of a plurality of crude drugs or extracts of the crude drugs, each crude drug or the components of the extract of each crude drug can be separated without separating the crude drugs or the extracts of the crude drugs. It can be used effectively.

As a preferred aspect of the sanitary napkin 1 of the present embodiment, in the longitudinal direction L, the distance between the widthwise center line CW and the front edge 11E1 of the absorbent body 11 is , and the front edge of the sanitary napkin 1 . Therefore, in the front region of the sanitary napkin 1 in the longitudinal direction L, a sufficient region in the longitudinal direction L of the absorbent body 11 capable of absorbing bodily fluids can be secured. Therefore, when the sanitary napkin 1, which has the warmth-sensing body 5 on the front side in the longitudinal direction L and has a relatively long front portion, is worn on an underwear, the wearer does not have to worry about the protrusion of the front end portion. Even if the sanitary napkin 1 is worn with the sanitary napkin 1 shifted rearward more than necessary, a sufficient area for the absorbent body 11 can be secured in the front area of the sanitary napkin 1, so body fluid leakage from the front side can be suppressed. .

(Second embodiment)
The configuration of the sanitary napkin 1a according to this embodiment will be described. A 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 warming body 5. As shown in FIG. To put it simply, the sanitary napkin 1a has a configuration in which the warming body 5 is removed from the sanitary napkin 1. As shown in FIG. Differences between the sanitary napkin 1a and the sanitary napkin 1 will be mainly described below.

6 to 9 are diagrams showing configuration examples of the sanitary napkin 1a according to this embodiment. FIG. 6 is a plan view showing the unfolded state of the sanitary napkin 1a. FIG. 7 is a cross-sectional view of the sanitary napkin 1a shown in FIG. 6 along the longitudinal center line CL. 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 and the like of the sanitary napkin 1a.

The herbal medicine material layer 45a of the sanitary napkin 1a according to the present embodiment is arranged in a range in the longitudinal direction L that overlaps the range from one end to the other end of the absorbent body 11 in the thickness direction T. It is different from the herbal medicine material layer 45 of the sanitary napkin 1 according to one embodiment. By arranging the herbal medicine material layer 45a in a longer range in the longitudinal direction L, the function of the herbal medicine material can be further enhanced. In another embodiment, the herbal medicine material layer 45a is arranged similarly to the herbal medicine material layer 45 of the first embodiment. In another embodiment, the sanitary napkin 1a further comprises a warming body 5 similar to that of the first embodiment.

(Materials, etc. in sanitary napkin 1)
Next, each material and the like of the sanitary napkin 1 (including the sanitary napkin 1a; the same shall apply hereinafter) in each embodiment will be described.

In each of the above embodiments, the herbal medicinal material layer 45 (, herbal medicinal material layer 45a) contained in the sanitary napkin 1 contains a herbal medicinal material having a water-soluble component and a lipophilic component, and a solvent layer (, other solvent layer) contains a lipophilic solvent.

Here, the Chinese herbal medicine material is a material containing Chinese medicine, and the Chinese medicine is an agent containing Chinese medicine (prescription) and herbal medicine. Crude drugs are agents with medicinal properties obtained by processing and adjusting natural materials (eg, plants, animals, and minerals) by specific methods. Kampo medicines are medicines in which multiple crude drugs are combined. The herbal medicine material may be any herbal medicine that is medically, pharmacologically, or physiologically acceptable, or an extract extracted from the herbal medicine. There are no particular restrictions. As a herbal medicine material, for example, crude drugs or herbal medicines described in "New General Chinese Medicine Prescription Guide" (edited by Japan Kampo Herbal Medicines Association, published by Jiho Co., Ltd.), or extracted from those crude drugs or herbal medicines extracts. Specifically, Kampo medicines include keishibukuryogan, kamishoyosan, tokishakuyakusan, unkeito, kyukyougato, shakuyakukanzoto, tokishigyakukagoshuyushokyoto, and peach. Examples include Kakujokito, Daiobotanhito, and Goshakusan. Herbal medicines include Akyo (Ajia), Guiyou (艾葉), Kankyo (dried ginger), Glycyrrhiza (licorice), Bellflower (bellflower), Pheasant (Kojitsu), Cinnamon bark (cinnamon bark), Koboku (Prudence), and Goshuyu (Wu Shuyu). ), rhubarb, rhubarb, rhubarb, rhubarb jujube), taksha, chimpi, chili pepper, winter melon, toki, peach kernel, carrot, bakumondo, peppermint, hangge (half) Natsu), Byakushi, Byakujutsu (Byakjutsu), Bukuryo (Bukuryo), Bosho (Gerbery), Botanpi (peony bark), Ephedra (Ephedra), Mokutsu (Mokutsu) and the like are exemplified.

Lipophilic (oil-soluble, fat-soluble) components in these herbal medicine materials are not particularly limited as long as they are soluble in a lipophilic solvent. Such lipophilic ingredients include, for example, fat-soluble polyphenols, gingerols, shogaols, and gingerones. Fat-soluble polyphenols can be extracted with a lipophilic solvent, for example, from Toki, river cucumber, and Chinese peony. Gingerols and the like (body-warming ingredients) can be extracted, for example, from ginger with a lipophilic solvent.

On the other hand, the water-soluble components in these herbal medicine materials are not particularly limited as long as they are soluble in body fluids, sweat and the like. Examples of such water-soluble components include water-soluble polyphenols and paeoniflorin. Water-soluble polyphenols can be extracted with water from, for example, Dang Gui, Sichuan cucumber, and Chinese peony. Paeoniflorin, an analgesic component, can be extracted with water, for example, from peony.

The lipophilic solvent is not particularly limited as long as it can dissolve the lipophilic components of the herbal medicine material. Examples of lipophilic solvents include oils and fats. Fats and oils include, for example, natural oils such as vegetable oils and animal oils, and hydrocarbons. Examples of natural oils include fatty acid esters such as triglycerides, coconut oil, and linseed oil. Hydrocarbons include, for example, paraffins such as liquid paraffin. The lipophilic solvent does not necessarily have to be in a liquid form, and may be in solid form in any material of the sanitary napkin 1 or may be volatile depending on temperature. Although the lipophilic solvent is in a liquid state during the manufacturing process of the sanitary napkin 1, it may be in a solid state when the sanitary napkin 1 is completed, stored, or sold. However, during use, it will return to a liquid state 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 absorbent body 11 are the warming agent 50 containing the warming component and the solvent component that activate TRP channels, and the warming agent. It has an agent 51 and a warming agent 52 .

The warming agents 50, 51, 52 include, for example, a warming component that activates TRP channels (thermoreceptors (thermal receptors)) and a solvent component. The warming component is not particularly limited as long as it activates the TRP channel, and examples thereof include agonists to the TRPV1 receptor, agonists to the TRPV3 receptor, etc., and agonists to the TRPV1 receptor are preferred. This is because the TRPV1 receptor has a high activation temperature threshold of more than 43° C. and can impart a high sense of warmth to the wearer.

The warming component is preferably a plant-derived compound from the viewpoint of comfort of the wearer. Examples of warming ingredients include capsicoside, capsaicin, capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, nonivamide, etc.), capsanthin, benzyl nicotinate, β-butoxyethyl nicotinate, and N-acylcrocodile. lanamide, nonanoic acid vanillylamide, polyhydric alcohol, red pepper powder, red pepper tincture, red pepper extract, nonanoic acid vanillyl ether, vanillyl alcohol alkyl ether derivatives (examples: vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, vanillyl lylhexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratial alcohol derivative, substituted benzyl alcohol derivative, substituted benzyl alcohol alkyl ether, vanillin propylene glycol acetal, ethyl vanillin propylene glycol acetal, ginger extract, ginger Oils, gingerols, gingerones, hesperidins, and pyrrolidone carboxylic acids, and any combination thereof. Among them, the warming component is preferably not capsaicin from the viewpoint that the wearer hardly feels pain, and vanillyl alcohol alkyl ether derivatives (examples: vanillyl ethyl ether, vanillyl butyl ether, vanillyl pentyl ether, vanillylhexyl ether), ginger extract, ginger oil, gingerol and gingerone, and any combination thereof are more preferred.

The solvent component is not particularly limited as long as it can contain a warming component, and examples thereof include lipophilic solvents and hydrophilic solvents. Such a solvent component can dissolve or disperse the warming component. Examples of lipophilic solvents include oils and fats. Examples of fats and oils include natural oils (eg, fatty acid esters such as triglycerides, coconut oil, linseed oil, etc.), hydrocarbons (eg, paraffin (eg, liquid paraffin)), and the like. Hydrophilic solvents include, for example, water and alcohols. Examples of alcohols include lower alcohols such as methanol, ethanol, ethylene glycol and glycerin, and higher alcohols such as capryl alcohol, lauryl alcohol and myristyl alcohol. Among them, as the solvent component, oils (lipophilic solvents) or alcohols (hydrophilic solvents) are preferable from the viewpoint of easy control of volatility, particularly easy reduction of volatility. In addition, from the viewpoint of less inhibition of absorbability, the solvent component is preferably a lipophilic solvent. By using a lipophilic solvent as the solvent component of the warming agent, it can also be used as a lipophilic solvent for the herbal medicine material, whereby the sanitary napkin 1 can be made thinner and softer, and the feeling of wearing can be improved.

Note that the warming agent 51 of the liquid permeable sheet 7 and the warming agent 52 on the surface of the absorbent body 11 may be applied to lower layers (eg, the absorbent body 11, the lower part of the absorbent body 11) depending on the type of body fluid and the position where it is applied. It is preferable to coexist with a durable hydrophilizing agent (durable hydrophilizing agent) having a characteristic that it is difficult to flow out. That is, it preferably contains a durable hydrophilic oil agent as a solvent component. The durable hydrophilic oil agent is not particularly limited, and those coated or kneaded into fibers can be employed in the technical field. Examples of durable hydrophilizing agents include a mixture of an alkyl phosphate ester salt having 10 to 30 carbon atoms and a betaine compound, sulfate ester salt or sulfonate salt having 10 to 30 carbon atoms, an alkyl phosphate ester salt and polyether modification. A mixture with silicone and the like are included. Therefore, it is possible to prevent the warming agents 51 and 52 from migrating to the lower layers due to body fluids. That is, the warming agent can be maintained in a portion relatively close to the skin. As a result, it is possible to further improve the durability of the warm feeling.

The concentration of the warming component of the warming agents 50 to 52 is preferably 1 to 50% by mass, more preferably 3 to 30% by mass, still more preferably 5 to 15% by mass. This is from the viewpoint 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/m ² , more preferably 0.01 to 20 g/m ² , even more preferably. is between 0.1 and 10 g/m ² . This is for giving a feeling of warmth to the wearer.

When the warming agents 50 to 52 contain heat-generating components as warming-sensing components, the heat-generating component is not particularly limited as long as the heat-generating component itself generates heat. Exothermic components include, for example, metal powder such as iron powder (using heat of oxidation), acidic substances and alkaline substances (using heat of neutralization), and inorganic salts (using heat of hydration). When the heat-generating component is used, the wearer's skin can actually be warmed when the sanitary napkin 1 is worn, and the wearer can certainly feel the warmth.

The warming agent 50, the warming agent 51, and the warming agent 52 are water-disintegrable protective materials to prevent them from volatilizing or migrating to other areas before the sanitary napkin 1 is used. , for example, may be protected by microcapsules. A microcapsule encloses a functional agent, and when it comes into contact with a liquid (eg, menstrual blood, urine, sweat), it disintegrates and releases the functional agent to the outside. The released functional agent evaporates due to the wearer's body temperature, etc., or comes into contact with the wearer's skin, thereby exerting a predetermined function on the wearer.

Materials for microcapsules include, for example, sugars such as monosaccharides (example: glucose), disaccharides (example: sucrose) and polysaccharides (example: dextrin, glucomannan, sodium alginate, water-soluble starch), gelatin, Water-soluble polymers (examples: polyvinyl alcohol, polyvinyl acetate) and the like can be mentioned.

Microcapsules are commercially available, such as INCAP™, available from Symrise. Alternatively, microcapsules can be produced, for example, by dissolving the material of microcapsules in water to form an aqueous solution, mixing a functional agent and a surfactant in the aqueous solution, and drying under reduced pressure while spraying the aqueous solution. can be done.

In the sanitary napkin 1, the warming agents 50 to 52 include, in addition to the warming component and the solvent component described above, at least one other agent having a desired effect within a range that does not impede the effect of imparting a warm feeling to the wearer. can contain ingredients. Such at least one other ingredient includes, for example, antibacterial agents, skin astringent agents, anti-inflammatory agents, vitamins, amino acids, zeolite, hyaluronic acid, collagen, petrolatum, trehalose, pH adjusters, moisturizers, fragrances. etc.

The warming agent of the sanitary napkin 1 does not easily cause low-temperature burns and does not easily soften the adhesive part 72, etc., unlike exothermic agents that generate heat themselves. In addition, the adhesive portion 72 and the like are less likely to remain on underwear or the like, which is preferable.

In the sanitary napkin 1, the material of the liquid-permeable sheet 7 is not particularly limited as long as it has liquid-permeability. be done. As the fabric, a non-woven fabric is preferable from the viewpoint of ease of manufacturing the sanitary napkin 1 . Nonwoven fabrics include, for example, air-laid pulp, air-through nonwoven fabrics, spunbond nonwoven fabrics, point-bond nonwoven fabrics, spunlace nonwoven fabrics, needle-punched nonwoven fabrics, meltblown nonwoven fabrics, and combinations thereof (example: SMS). Among them, as the nonwoven fabric, an air-through nonwoven fabric is preferable. The liquid-permeable sheet 7 preferably has a basis weight of 5-100 g/m ² , more preferably 10-50 g/m ² .

Examples of fibers that make up the fabric include natural fibers, synthetic fibers, and semi-synthetic fibers. Natural fibers include, for example, pulp fibers and regenerated cellulose fibers. Regenerated cellulose fibers include, for example, rayon fibers. Semi-synthetic fibers include, for example, semi-synthetic cellulose fibers such as acetate fibers. Synthetic fibers include, for example, thermoplastic fibers. Examples of thermoplastic fibers include polyolefin polymers such as polyethylene and polypropylene, polyester polymers such as polyethylene terephthalate (PET), polybutylene terephthalate and polypentylene terephthalate, and polyamides such as nylon 6 and nylon 6,6. Examples include fibers formed from polyacrylonitrile-based polymers, acrylic polymers, polyacrylonitrile-based polymers, modified products thereof, or combinations thereof. Examples of the perforated film include polyethylene or polypropylene sheets having a plurality of perforations.

The surface sheet 7a is preferably made of hydrophilic fibers (eg, cotton, rayon, wool, silk). As a result, moisture including perspiration can be easily drawn into and held in the constituent fibers. This makes it difficult for water to remain on the surface of the constituent fibers, makes it difficult for water to come into contact with the skin, and makes it difficult for the skin to feel cold. As a result, it is possible to further improve the durability of the warm feeling.

In the sanitary napkin 1, the material of the liquid-impermeable sheet 9 is not particularly limited as long as it is liquid-impermeable and air-impermeable. This is to make it difficult for the air warmed by the warming effect of the warming agent 50 to escape from the area between the liquid-impermeable sheet 9 and the skin. Examples of materials for the liquid-impermeable sheet 9 include synthetic resin films such as polyethylene and polypropylene, nonwoven fabrics such as spunbond or spunlace bonded to synthetic resin films, and multi-layer nonwoven fabrics such as SMS. A flexible synthetic resin film is preferred. The liquid-impermeable sheet 9 preferably has a basis weight of 10-50 g/m ² , more preferably 15-30 g/m ² .

In the sanitary napkin 1, the material of the warming agent holding sheet 13 includes, for example, those listed as the material of the liquid permeable sheet 7, a porous resin sheet such as a sponge sheet, and the like, impregnated with the warming agent 50. possible ones. Specifically, when the solvent component of the warming agent 50 is a lipophilic solvent, synthetic fiber fabrics such as nonwoven fabrics, woven fabrics, and knitted fabrics can be used, and synthetic fiber nonwoven fabrics are preferred. When the solvent component of the warming agent is a hydrophilic solvent, examples thereof include fabrics composed of cellulosic fibers, such as nonwoven fabrics, woven fabrics, knitted fabrics, etc., preferably tissues and air-laid pulps composed of pulp fibers. mentioned. As another embodiment, when a heat-retaining main body having a heat-retaining function is used instead of the heat-sensing main body 5, the material of the heat-retaining sheet that replaces the heat-sensing agent-holding sheet 13 is, for example, a heat-sensing agent-holding sheet. 13, and in this case the warming agent 50 is not impregnated.

In the sanitary napkin 1, examples of materials for (the absorbent core of) the absorbent body 11 include pulp fibers and superabsorbent polymers. When the absorbent body 11 has a core wrap, the material of the core wrap includes, for example, tissue. The basis weight of the absorbent body 11 is, for example, 10 to 500 g/m ² , preferably 100 to 400 g/m ² .

In the sanitary napkin 1, materials for the adhesive portions 71, 72, 73, etc. include hot-melt adhesives such as styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS), styrene- Pressure-sensitive adhesives or heat-sensitive adhesives mainly composed of rubber such as isoprene-styrene (SIS) or olefins such as linear low-density polyethylene; water-soluble polymers (eg, polyvinyl alcohol, carboxymethyl cellulose, gelatin, etc.) or water-sensitive adhesives made of water-swellable polymers (eg, polyvinyl acetate, sodium polyacrylate, etc.).

In the sanitary napkin 1, examples of the material of the individual packaging sheet 41 include polyolefin 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 polymer, such as vinylidene chloride methyl acrylate copolymer, polyvinyl alcohol, nylon, such as nylon 6, aluminum foil, and substrate film (polyethylene terephthalate, etc.). Alumina, silica, etc. are vapor-deposited.

The absorbent article (example: sanitary napkin) of the present invention is not limited to the above-described embodiments, and may be combined with each other without departing from the scope and spirit of the present invention. It is possible, for example, to apply technology.

1 sanitary napkin 7 liquid-permeable sheet (sheet member)
9 Liquid-impermeable sheet 11 Absorber 51, 52 Warming agent 60 Absorber pressing part (absorber concave part)
67 sheet pressing portion (sheet member concave portion)

Claims (9)

an absorbent body having a longitudinal direction, a width direction and a thickness direction, and a liquid-permeable sheet member overlapping the absorbent body in the thickness direction, positioned closer to the skin than the absorbent body, and having liquid permeability; An absorbent article comprising
a herbal medicine material layer located on at least one of the absorbent body and the sheet member and containing a herbal medicine material having a water-soluble component and a lipophilic component;
a solvent layer located on at least one of the absorbent body and the sheet member and containing a lipophilic solvent;
with
A part of the herbal medicine material layer and a part of the solvent layer overlap in the thickness direction, or one of the part of the herbal medicine material layer and the part of the solvent layer is embedded in the other. overlapping in the longitudinal direction or the width direction in a state ,
absorbent article. The solvent layer is located closer to the skin than the herbal medicine material layer,
The absorbent article according to claim 1. The solvent layer is also located on the non-skin side of the herbal medicine material layer,
The absorbent article according to claim 2. The solvent layer is not arranged in the central portion in the width direction,
4. The absorbent article according to any one of claims 1-3. Further comprising a warming agent positioned on at least one of the absorbent body and the sheet member and having a warming function,
5. The absorbent article according to any one of claims 1-4. Further comprising a warming member positioned at least one of the front side and the rear side in the longitudinal direction of the absorbent body in the absorbent article in a plan view and containing another warming agent having a warming function,
In a plan view, the sheet member extends to at least one of the front side and the rear side in the longitudinal direction from the absorbent body, overlaps with the warming member in the thickness direction, and has a lower thickness than the warming member. located on the side of
6. The absorbent article according to any one of claims 1-5. another herbal medicinal material layer located on at least one of the warming member and the sheet member and containing another herbal medicinal material having a water-soluble component and a lipophilic component;
another solvent layer located on at least one of the warming member and the sheet member and containing another lipophilic solvent;
further comprising
Part of the other herbal medicine material layer and part of the other solvent layer overlap in the thickness direction, or overlap in the longitudinal direction or the width direction,
The absorbent article according to claim 6. The warming agent is
A warming component that makes the wearer perceive warmth,
a solvent component that dissolves or disperses the warming component;
including
The solvent component is the lipophilic solvent,
8. The absorbent article according to any one of claims 5-7. The herbal medicine material comprises a crude drug containing the water-soluble component or an extract of the crude drug, and a crude drug containing the lipophilic component or an extract of the crude drug.
9. The absorbent article according to any one of claims 1-8.

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