CN111818887A - Absorbent article - Google Patents

Absorbent article Download PDF

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Publication number
CN111818887A
CN111818887A CN202080001342.9A CN202080001342A CN111818887A CN 111818887 A CN111818887 A CN 111818887A CN 202080001342 A CN202080001342 A CN 202080001342A CN 111818887 A CN111818887 A CN 111818887A
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CN
China
Prior art keywords
temperature
solvent
chinese medicine
traditional chinese
component
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Granted
Application number
CN202080001342.9A
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Chinese (zh)
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CN111818887B (en
Inventor
林俊久
山本成海
内田祥平
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Unicharm Corp
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Unicharm Corp
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Publication of CN111818887A publication Critical patent/CN111818887A/en
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Publication of CN111818887B publication Critical patent/CN111818887B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51113—Topsheet, i.e. the permeable cover or layer facing the skin comprising an additive, e.g. lotion or odour control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
    • A61F13/47263—Sanitary towels, incontinence pads or napkins specially adapted for female use with activating means, e.g. elastic, heat or chemical activatable means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/40—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing ingredients of undetermined constitution or reaction products thereof, e.g. plant or animal extracts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/44—Medicaments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/51113—Topsheet, i.e. the permeable cover or layer facing the skin comprising an additive, e.g. lotion or odour control
    • A61F2013/51117—Topsheet, i.e. the permeable cover or layer facing the skin comprising an additive, e.g. lotion or odour control the lotion having skin care properties
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/84—Accessories, not otherwise provided for, for absorbent pads
    • A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
    • A61F2013/8408—Additives, e.g. for odour, disinfectant or pH control with odour control
    • A61F2013/8435—Additives, e.g. for odour, disinfectant or pH control with odour control with plant derivatives

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Hematology (AREA)
  • Zoology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Botany (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

Provided is an absorbent article which can make water-soluble components and lipophilic components of a traditional Chinese medicine material easily reach the skin of a wearer. An absorbent article includes: an absorber (11); and a sheet member (7) that overlaps the absorber in the thickness direction, is positioned closer to the skin than the absorber, and has liquid permeability. The absorbent article further includes: a Chinese medicinal material layer (45) located at least one of the absorber and the sheet member and containing a Chinese medicinal material having a water-soluble component and a lipophilic component; and a solvent layer (51a) that is located on at least one of the absorber and the sheet member and that contains a lipophilic solvent. The part of the traditional Chinese medicine material layer and the part of the solvent layer are overlapped in the thickness direction, or overlapped in the length direction or the width direction.

Description

Absorbent article
Technical Field
The present invention relates to an absorbent article.
Background
Absorbent articles provided with traditional Chinese medicine materials are known. For example, patent document 1 discloses an absorbent article in which an intermediate absorbent body containing a traditional Chinese medicine material is disposed between a topsheet and a base absorbent body. In the absorbent article, a traditional Chinese medicine material having a powder with a desired particle size distribution and an average particle shape is disposed in the intermediate absorber. As the Chinese medicinal materials, the crude drugs of mugwort leaf (artemisia leaf), angelica (angelica), and cyperus rotundus (cyperus rotundus) are mixed in the ratio of 1: 1: 1, and mixing them.
Documents of the prior art
Patent document
Patent document 1: japanese patent No. 4261593
Disclosure of Invention
Problems to be solved by the invention
If a traditional Chinese medicine material is disposed at a position on the non-skin side of the topsheet as in the absorbent article of patent document 1, it seems to be difficult for the components of the traditional Chinese medicine material to reach the skin of the wearer at first glance. However, even in this case, when the component has a property of being easily soluble in water, that is, water solubility, the component can be dissolved in water by bringing the Chinese medicinal material into contact with the water such as body fluid (exemplified by menstrual blood) or sweat, which is liquid excrement. Therefore, by allowing the moisture to reach the skin, the component can reach the skin of the wearer.
However, the components of the Chinese medicinal material sometimes have the property of being hardly soluble in water, i.e., are not water-soluble. For example, in the case where the component has a property of being easily soluble in an oil component, i.e., lipophilicity, even if the traditional Chinese medicine material comes into contact with moisture such as body fluid and sweat, the component is hardly dissolved in the moisture. In this case, even if the moisture reaches the skin, it is difficult for the component to reach the skin of the wearer. Therefore, even if such a traditional Chinese medicine material is disposed in an absorbent article, it may be difficult to sufficiently exhibit the function as a traditional Chinese medicine material.
Such a situation occurs also in the case of a traditional Chinese medicine material having both a water-soluble component and a lipophilic component. Examples of such a herbal material include the following herbal materials: one or more crude drugs having water-soluble components, or extracts thereof; and one or more crude drugs having lipophilic components, and their extracts. Further, as such a Chinese medicinal material, one or more crude drugs having both a water-soluble component and a lipophilic component, and extracts thereof can be cited.
Accordingly, an object of the present invention is to provide an absorbent article including a traditional Chinese medicine material containing not only a component having water solubility but also a component having lipophilicity, wherein the absorbent article can make the components of the traditional Chinese medicine material easily reach the skin of a wearer.
Means for solving the problems
An absorbent article according to the present invention is an absorbent article having a longitudinal direction, a width direction, and a thickness direction, the absorbent article including: an absorbent body; and a sheet member that overlaps the absorber in the thickness direction, is positioned closer to the skin than the absorber, and has liquid permeability, wherein the absorbent article includes: a layer of traditional Chinese medicine material, located at least one of the absorber and the sheet member, containing a traditional Chinese medicine material having a water-soluble component and a lipophilic component; and a solvent layer that is located in at least one of the absorber and the sheet member, contains an oleophilic solvent, and a part of the traditional Chinese medicine material layer and a part of the solvent layer overlap in the thickness direction or overlap in the length direction or the width direction.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, it is possible to provide an absorbent article including a traditional Chinese medicine material containing not only a component having water solubility but also a component having lipophilicity, wherein the absorbent article is capable of allowing the components of the traditional Chinese medicine material to easily reach the skin of a wearer.
Drawings
Fig. 1 is a plan view showing a configuration example of a sanitary napkin according to embodiment 1.
Fig. 2 is a sectional view along a longitudinal center line of fig. 1.
Fig. 3 is a bottom view showing a configuration example of the sanitary napkin according to embodiment 1.
Fig. 4 is a schematic view showing the arrangement of the solvent layer of the liquid-permeable sheet according to embodiment 1.
Fig. 5 is a schematic diagram showing the arrangement of the solvent layer in the absorber of embodiment 1.
Fig. 6 is a plan view showing a configuration example of the sanitary napkin according to embodiment 2.
Fig. 7 is a sectional view taken along a longitudinal center line of fig. 6.
Fig. 8 is a schematic view showing the arrangement of the solvent layer of the liquid-permeable sheet according to embodiment 2.
Fig. 9 is a schematic diagram showing the arrangement of the solvent layer in the absorber of embodiment 2.
Detailed Description
Specifically, the present disclosure relates to the following aspects.
[ solution 1]
An absorbent article having a longitudinal direction, a width direction, and a thickness direction, the absorbent article comprising: an absorbent body; and a sheet member that overlaps the absorber in the thickness direction, is positioned closer to the skin than the absorber, and has liquid permeability, wherein the absorbent article includes: a layer of traditional Chinese medicine material, located at least one of the absorber and the sheet member, containing a traditional Chinese medicine material having a water-soluble component and a lipophilic component; and a solvent layer that is located in at least one of the absorber and the sheet member, contains an oleophilic solvent, and a part of the traditional Chinese medicine material layer and a part of the solvent layer overlap in the thickness direction or overlap in the length direction or the width direction.
In the absorbent article, the traditional Chinese medicine material having the water-soluble component and the lipophilic solvent are partially overlapped in the thickness direction or overlapped in the planar direction (the longitudinal direction or the width direction), and are positioned in at least one of the absorbent body and the sheet member.
Therefore, in the region where the traditional Chinese medicine material and the lipophilic solvent overlap in the thickness direction or the plane direction, when the body fluid is excreted into the absorbent article and transferred and diffused in the sheet member and the absorbent body, a part of the body fluid passes through the traditional Chinese medicine material and the lipophilic solvent. As a result, the lipophilic solvent is transferred and diffused along with the flow (transfer and diffusion) of the body fluid, and comes into contact with at least a part of the traditional Chinese medicine material. This allows the lipophilic component of the traditional Chinese medicine material to be dissolved in the lipophilic solvent. Then, the lipophilic solvent containing the lipophilic component diffuses or volatilizes, and the lipophilic solvent can reach the skin of the wearer. Alternatively, in a state where the lipophilic solvent containing the lipophilic component is contained in moisture such as body fluid or sweat, for example, in an oil film state on the substantial surface of the moisture, the moisture is converted into steam or diffused so as to return to the skin side by the body pressure applied to the absorbent article, and the lipophilic solvent can reach the skin of the wearer together with the moisture. That is, the lipophilic component of the traditional Chinese medicine material can reach the skin of the wearer.
On the other hand, in a region where the traditional Chinese medicine material and the lipophilic solvent do not overlap in the thickness direction or the planar direction (a region where the two overlap may be a partial region), when the body fluid is transferred and diffused in the sheet member and the absorbent body, a part of the body fluid reaches the traditional Chinese medicine material without passing through the lipophilic solvent. Alternatively, sweat or the like released from the skin diffuses in the sheet member and reaches the Chinese medicinal material. That is, the moisture such as body fluid and sweat comes into contact with the herbal medicine material by flowing (transferring/diffusing). This makes it possible to dissolve the water-soluble components of the herbal material into the moisture of body fluid, sweat, etc. In this case, since the lipophilic solvent is not present in the vicinity, it is possible to suppress the lipophilic solvent from covering the traditional Chinese medicine materials and making it difficult for water to reach the traditional Chinese medicine materials. Then, the moisture containing the water-soluble component is converted into steam or diffused toward the skin side by the body pressure applied to the absorbent article, so that the moisture containing the water-soluble component can reach the skin of the wearer. That is, the water-soluble components of the traditional Chinese medicine material can reach the skin of the wearer.
Thus, in an absorbent article in which the traditional Chinese medicine material contains not only a component having water solubility but also a component having lipophilicity, both components of the traditional Chinese medicine material can easily reach the skin of the wearer. Thus, the absorbent article can exhibit the effects of the traditional Chinese medicine materials, for example, the effects of warming the body by improving blood flow and blood circulation.
[ solution 2]
The absorbent article according to claim 1, wherein the solvent layer is located on the skin side of the layer of traditional Chinese medicine material.
In the absorbent article, the solvent layer is located closer to the skin than the layer of traditional Chinese medicine material. Therefore, when the body fluid is excreted into the absorbent article and transferred and diffused in the sheet member and the absorbent body, the body fluid and the lipophilic solvent can reliably pass through the traditional Chinese medicine material. Therefore, the lipophilic component of the traditional Chinese medicine material can be further dissolved in the lipophilic solvent, and the lipophilic component of the traditional Chinese medicine material can be further allowed to reach the skin of the wearer.
[ solution 3]
The absorbent article according to claim 2, wherein the solvent layer is further located on a non-skin side of the layer of traditional Chinese medicine material.
In the absorbent article, the solvent layer is present not only on the skin side but also on the non-skin side of the traditional Chinese medicine material layer. Therefore, when the body fluid is excreted into the absorbent article and transferred and diffused in the sheet member and the absorbent body, the body fluid and the lipophilic solvent can more reliably pass through the traditional Chinese medicine material. Therefore, the lipophilic component of the traditional Chinese medicine material can be further dissolved in the lipophilic solvent, and the lipophilic component of the traditional Chinese medicine material can be further made to reach the skin of the wearer.
[ solution 4]
The absorbent article according to any one of claims 1 to 3, wherein the solvent layer is not disposed in a central portion in the width direction.
The center portion in the width direction of the absorbent article abuts against the excretory opening of the wearer and the region in the vicinity thereof, that is, the region of sensitive skin. Therefore, in the present absorbent article, the solvent layer is not disposed in the center portion in the width direction of the absorbent article. Therefore, it is possible to make it difficult for lipophilic components of the traditional Chinese medicine material to migrate to the region where sensitive skin is in contact. This makes it possible to prevent the lipophilic component of the traditional Chinese medicine material from directly reaching the sensitive skin area while allowing the lipophilic component to reach the area other than the center portion in the width direction of the absorbent article.
[ solution 5]
The absorbent article according to any one of claims 1 to 4, further comprising a temperature-sensitive agent having a temperature-sensitive function and located in at least one of the absorber and the sheet member.
The absorbent article further includes a temperature-sensitive agent having a temperature-sensitive function. Therefore, the air containing moisture such as sweat generated in the vicinity of the skin where the body temperature rises due to the temperature sensing effect can swell the traditional Chinese medicine material, increase the surface area thereof, and facilitate the release of the components of the traditional Chinese medicine material. Further, since the lipophilic solvent can be warmed by the temperature-sensitive effect, the components of the traditional Chinese medicine material dissolved in the lipophilic solvent can be easily volatilized together with the moisture and/or the lipophilic solvent or can be volatilized separately. This allows the components of the traditional Chinese medicine material to reach the skin of the wearer. In addition, in the case where the effect of the traditional Chinese medicine material is an effect of warming the body by improving blood flow and blood circulation, the absorbent article can further warm the body by the synergistic effect of the temperature sensitive agent and the traditional Chinese medicine material.
[ solution 6]
The absorbent article according to any one of claims 1 to 5, further comprising a temperature-sensitive member that is located on at least one of the front side and the rear side in the longitudinal direction of the absorbent body of the absorbent article in plan view, contains another temperature-sensitive agent having a temperature-sensitive function, and the sheet member protrudes toward at least one of the front side and the rear side in the longitudinal direction with respect to the absorbent body in plan view, overlaps the temperature-sensitive member in the thickness direction, and is located on the skin side of the temperature-sensitive member.
The absorbent article further includes a temperature-sensitive member that is positioned on at least one of the front side in the longitudinal direction of the absorbent body, i.e., the abdomen side of the wearer, and the back side in the longitudinal direction of the absorbent body, i.e., the back side of the wearer, and that contains another temperature-sensitive agent. Therefore, when the absorbent article is worn on the wearer, at least one of the abdominal side and the back side of the wearer can be warmed by the temperature sensitive agent. This allows the components of the traditional Chinese medicine material to reach the skin of the wearer, and allows at least one of the abdomen and the back to be warmed by another temperature sensitive agent located on at least one of the abdomen side and the back side.
[ solution 7]
The absorbent article according to claim 6, wherein the absorbent article comprises: a layer of other traditional Chinese medicine material, located in at least one of the temperature sensitive member and the sheet member, containing other traditional Chinese medicine material having a water-soluble component and a lipophilic component; and an additional solvent layer that is provided on at least one of the temperature-sensitive member and the sheet member, contains an additional lipophilic solvent, and partially overlaps with the additional solvent layer in the thickness direction.
In the absorbent article of the present invention, the other traditional Chinese medicine material and the other lipophilic solvent are partially overlapped in the thickness direction or the planar direction (longitudinal direction or width direction) on at least one of the front side and the back side in the longitudinal direction with respect to the absorbent body, and are positioned at least one of the temperature sensitive member and the sheet member. Therefore, when the absorbent article is worn on the wearer, at least one of the abdominal side and the back side of the wearer is warmed by the temperature sensitive agent, and the other traditional Chinese medicine materials can be swollen by the air containing moisture such as sweat generated in the vicinity of the skin where the body temperature rises due to the temperature sensitive effect, so that the surface area is increased, and the components of the other traditional Chinese medicine materials can be easily released. Further, since the other lipophilic solvent can be warmed by the air warmed by the temperature-sensitive effect, the components of the other traditional Chinese medicine materials dissolved in the other lipophilic solvent can be easily volatilized together with the moisture and/or the other lipophilic solvent or can be volatilized separately. Thus, at least one of the front side and the rear side in the longitudinal direction can further allow the components of the other traditional Chinese medicine materials to reach the skin on the front side in the longitudinal direction of the wearer.
[ solution 8]
The absorbent article according to any one of claims 5 to 7, wherein the temperature-sensitive agent includes: a temperature-sensitive component for causing a wearer to perceive a temperature sensation; and a solvent component for dissolving or dispersing the temperature sensitive component, the solvent component being the lipophilic solvent.
In the absorbent article of the present invention, since the solvent component contained in the temperature sensitive agent is a lipophilic solvent, it is possible to form (the solvent component of) the temperature sensitive agent as a solvent layer, to eliminate the need for a separate solvent layer, or to reduce the area or thickness of the solvent layer. This can shorten the distance between the traditional Chinese medicine material and/or the temperature sensitive agent and the skin surface of the wearer. Thus, the traditional Chinese medicine material layer and/or the temperature sensitive agent can reach the skin of the wearer more easily.
[ solution 9]
The absorbent article according to any one of claims 1 to 8, wherein the traditional Chinese medicine material includes: a crude drug containing the water-soluble component; and a crude drug containing the lipophilic component.
As the Chinese medicinal material, there is a Chinese medicinal material obtained by mixing a plurality of crude drugs or extracts of the crude drugs. Therefore, the absorbent article uses, as the herbal material, a herbal material obtained by mixing a crude drug or an extract of the crude drug containing a water-soluble component and a crude drug or an extract of the crude drug containing a lipophilic component. Even in such a case, in the present absorbent article, by dissolving the water-soluble component in the water and dissolving the lipophilic component in the lipophilic solvent, it is possible to further allow the components of these traditional Chinese medicine materials to reach the skin of the wearer. Therefore, even if the Chinese medicinal material is a mixture of a plurality of crude drugs or extracts thereof, each crude drug or component of each crude drug extract can be effectively used without separating the crude drugs or extracts thereof.
Hereinafter, an absorbent article according to an embodiment will be described by taking a sanitary napkin provided with a traditional Chinese medicine material as an example. The absorbent article is not limited to this example, and may be another absorbent article including a traditional Chinese medicine material without departing from the spirit of the present invention. Examples of such absorbent articles include normal sanitary napkins, pantiliners, incontinence pads, and disposable diapers that are provided with a traditional Chinese medicine material.
(embodiment 1)
The structure of the sanitary napkin 1 according to the present embodiment will be described. Fig. 1 to 5 are views showing a configuration example of a sanitary napkin 1 according to the present embodiment. Fig. 1 is a plan view showing a state where an individual packaging 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 taken along a longitudinal center line CL (described later) (except for the individual package sheet 41). Fig. 3 is a bottom view of the sanitary napkin 1 (except for the individual packaging sheet 41). Fig. 4 is a schematic view 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. Fig. 5 is a schematic view showing the arrangement of solvent layers 50a, 52a (described later) and the like in the sanitary napkin 1. The sanitary napkin 1 has a longitudinal direction L, a width direction W, and a thickness direction T that are orthogonal to each other. In the sanitary napkin 1 shown in fig. 1, the upper side of the drawing is defined as the front side (front) or the ventral side in the longitudinal direction L, and the lower side of the drawing is defined as the rear side (rear) or the back side in the longitudinal direction L. The sanitary napkin 1 placed on a plane including the longitudinal direction L and the width direction W as viewed from above in the thickness direction T is referred to as "planar shape", and the shape grasped in the planar shape is referred to as "planar shape". An arbitrary direction in a plane including the longitudinal direction L and the width direction W is referred to as a "plane direction". The side that becomes the skin surface relatively close to the wearer in the thickness direction T when the sanitary napkin 1 is worn by the wearer is referred to as the "skin side", and the side that becomes the skin surface relatively distant from the wearer in the thickness direction T is referred to as the "non-skin side". These definitions are also common to the respective materials of the sanitary napkin 1.
Both ends in the longitudinal direction L of the individual packaging sheet 41 extend outward in the longitudinal direction L from both ends in the longitudinal direction L of the sanitary napkin 1, and both ends in the width direction W extend outward in the width direction W from both ends in the width direction W of the sanitary napkin 1. Therefore, when the sanitary napkin 1 is placed on the individual packaging sheet 41, the sanitary napkin is placed so as not to protrude outside the individual packaging sheet 41 in a plan view. Thus, when the sanitary napkin 1 is folded together with the individual packaging sheet 41, the sanitary napkin 1 can be packaged so as not to protrude outside the individual packaging sheet 41.
The sanitary napkin 1 includes an absorbent main body 3 that mainly absorbs body fluid (exemplified by menstrual blood) that is liquid excrement, and a temperature-sensitive body 5 that is positioned on the front side (ventral side) in the longitudinal direction L of the absorbent main body 3 and is used to make the skin feel a temperature. That is, the sanitary napkin 1 is divided into the absorption body 3 on the rear side in the longitudinal direction L and the temperature-sensitive body 5 on the front side in the longitudinal direction L. The absorbent main body 3 has a shape substantially similar to that of a normal sanitary napkin, and includes a pair of wings 17, 17 extending outward in the width direction W. The shape of the temperature-sensitive body 5 is not particularly limited, and examples thereof include: triangle, rectangle, polygon (including the case of round corner and the case of curve side); circular and oval; the shape of the living being; or a combination thereof. In another embodiment, the temperature-sensitive body 5 is positioned on the rear side (back side) in the longitudinal direction L of the absorption body 3 instead of the front side (abdomen side), or is positioned on both the front side (abdomen side) and the rear side (back side) in the longitudinal direction L of the absorption body 3. In yet another embodiment, there is no pair of wings 17, 17. In another embodiment, the temperature-sensitive body 5 is not provided.
The sanitary napkin 1 has a longitudinal center line CL (imaginary line) extending in the longitudinal direction L through the center in the width direction W and a width center line CW (imaginary line) connecting the centers in the longitudinal direction L of the pair of flaps 17, 17 in the width direction W. When the wing portions 17 are not present, the width-direction center line CW is a line extending in the width direction W through the center of the excretory opening contact region 21 (described later) of the absorption body 3 in the longitudinal direction L. In the present embodiment, both are identical. Alternatively, when the absorbent body 11 is of a so-called hourglass shape, the widthwise center line CW is a line extending in the widthwise direction W through a position (excluding both ends) where the dimension in the widthwise direction W of the absorbent body 11 in the longitudinal direction L is smallest. In the sanitary napkin 1, the direction toward the longitudinal center line CL is set to be inward in the width direction W, the side toward the longitudinal center line CL is set to be inward in the width direction W, the direction away from the longitudinal center line CL is set to be outward in the width direction W, and the side away from the longitudinal center line CL is set to be outward in the width direction W. On the other hand, the direction toward the width-direction center line CW is inward in the longitudinal direction L, the side toward the width-direction center line CW is inward in the longitudinal direction L, the direction away from the width-direction center line CW is outward in the longitudinal direction L, and the side away from the width-direction center line CW is outward in the longitudinal direction L. These definitions are also common to the respective materials of the sanitary napkin 1.
The sanitary napkin 1 includes, in the absorption body 3, a liquid-permeable sheet 7 that comes into contact with the skin of the wearer when worn, a liquid-impermeable sheet 9 that comes into contact with clothing (underwear) when worn, and an absorbent body 11 disposed between the liquid-permeable sheet 7 and the liquid-impermeable sheet 9. The sanitary napkin 1 further includes a liquid-permeable sheet 7 that comes into contact with the skin of the wearer when worn, a liquid-impermeable sheet 9 that comes into contact with clothing when worn, and a warming agent retaining sheet 13 disposed between the liquid-permeable sheet 7 and the liquid-impermeable sheet 9, in the warming body 5. The temperature-sensitive agent holding sheet 13 is positioned on the front side in the longitudinal direction L with respect to the absorbent body 11. The liquid-permeable sheet 7 of the absorption body 3 and the liquid-permeable sheet 7 of the temperature-sensitive body 5 are integrated sheets. The liquid-impermeable sheet 9 of the absorbent body 3 and the liquid-impermeable sheet 9 of the temperature-sensitive body 5 are an integral sheet. The integrated sheet includes not only a case where the material is a single sheet but also a sheet obtained by joining and integrating a plurality of sheets. The absorber 11 of the absorption body 3 and the temperature sensitive agent holding sheet 13 of the temperature sensitive body 5 are relatively independent members. The overlapping portion 15 is formed by overlapping the front end portion of the absorbent body 11 in the longitudinal direction L and the rear end portion of the temperature sensitive agent holding sheet 13 in the longitudinal direction L in the thickness direction T. That is, the front end edge 11E1 of the absorbent body 11 is positioned further forward than the rear end edge 13E2 of the temperature sensitive agent holding sheet 13 in the longitudinal direction L. In this case, the end of the absorbent body 11 is disposed at the end of the temperature-sensitive agent holding sheet 13 in the overlapping portion 15. This is to suppress the forward leakage of the body fluid in the longitudinal direction L.
In another embodiment, when the function of giving importance to the temperature sensation is considered, the end of the temperature sensitive agent holding sheet 13 is disposed at the end of the absorbent body 11 in the overlapping portion 15. In another embodiment, the end of the absorbent body 11 and the end of the temperature-sensitive agent holding sheet 13 do not overlap in a plan view (the overlapping portion 15 does not exist), and these edges are in contact with or separated from each other. In still another embodiment, the position of the front end edge 11E1 in the longitudinal direction L of the absorbent body 11 overlaps with or is located outside the position of the front end edge 13E1 in the longitudinal direction L of the temperature sensitive agent holding sheet 13. In other words, the temperature-sensitive agent holding sheet 13 overlaps the absorbent body 11 over the entire region in the longitudinal direction L. In another embodiment, the temperature-sensitive body 5 is replaced with a heat-retaining body having the same shape, and the temperature-sensitive agent retaining sheet 13 is replaced with a heat-retaining sheet having the same shape and not containing a temperature-sensitive agent.
The sanitary napkin 1 includes, in at least one of the absorption body 3 and the temperature-sensitive body 5: a Chinese medicinal material layer containing Chinese medicinal material with water-soluble component and lipophilic component; and a solvent layer comprising a lipophilic solvent. In the present embodiment, the sanitary napkin 1 includes, in the absorption body 3: a Chinese medicinal material layer 45 containing Chinese medicinal material having water-soluble components and lipophilic components; and a solvent layer 51a containing a lipophilic solvent. The traditional Chinese medicine material layer 45 has a substantially rectangular shape in plan view, and is positioned on the surface of the skin side of the absorbent body 11 or inside thereof in the thickness direction T. The chinese medicinal material layer 45 is located on both sides across the longitudinal center line CL and on both sides across the width center line CW in plan view, that is, in the central region in the width direction W and the longitudinal direction L of the absorbent main body 3. In the present embodiment, the entire or a part of the chinese medicinal material layer 45 is located in a region including the excretory opening contact region 21 (described later) in a plan view. In another embodiment, the layer 45 of traditional Chinese medicine material is positioned on the non-skin side surface of the liquid-permeable sheet 7 in the thickness direction T. In addition, the planar shape of the Chinese medicinal material layer 45 is arbitrary.
The solvent layer 51a has a plurality of stripe shapes extending in the longitudinal direction L and arranged at predetermined intervals in the width direction W in a plan view, and is positioned on the non-skin side surface of the liquid-permeable sheet 7 in the thickness direction T. A part of the traditional Chinese medicine material layer 45 overlaps a part of the solvent layer 51a in the thickness direction T, and a part of the traditional Chinese medicine material layer 45 is located on the non-skin side of the part of the solvent layer 51 a. From the viewpoint that lipophilic components are easily eluted into the lipophilic solvent, a part of the traditional Chinese medicine material layer 45 is in direct contact with a part of the solvent layer 51a in the thickness direction T. From the viewpoint that the lipophilic component is likely to contact the lipophilic solvent, the solvent layer 51a protrudes outward in the longitudinal direction L and outward in the width direction W in the plan view than the traditional Chinese medicine material layer 45. In the sanitary napkin 1, there is a region VM1 where a part of the traditional Chinese medicine material layer 45 and a part of the solvent layer 51a do not overlap in the thickness direction T, that is, there is a region where the traditional Chinese medicine material is present but the lipophilic solvent is not present. This is to facilitate the elution of water-soluble components of the herbal materials into body fluids, sweat, and other water. In addition, as another embodiment, in the case where the traditional Chinese medicine material layer 45 is positioned on the non-skin side surface of the liquid-permeable sheet 7 in the thickness direction T, the solvent layer 51a is positioned on the skin side of the traditional Chinese medicine material layer 45 in the liquid-permeable sheet 7 in the thickness direction T. The planar shape of the solvent layer 51a is arbitrary.
The sanitary napkin 1 further includes a solvent layer 52a containing a lipophilic solvent in the absorbent body 3. The solvent layer 52a has a plurality of stripe shapes extending in the longitudinal direction L and arranged at predetermined intervals in the width direction W in a plan view, and is positioned on the non-skin side of the herbal material layer 45 in the thickness direction T and on the skin side surface or inside of the absorbent body 11. The part of the traditional Chinese medicine material layer 45 and the part of the solvent layer 52a overlap in the thickness direction T, and the part of the traditional Chinese medicine material layer 45 is located on the skin side of the part of the solvent layer 52 a. From the viewpoint that lipophilic components are easily eluted into the lipophilic solvent, a part of the traditional Chinese medicine material layer 45 is in direct contact with a part of the solvent layer 52a in the thickness direction T. From the viewpoint that the lipophilic component is likely to contact the lipophilic solvent, the solvent layer 52a protrudes outward in the longitudinal direction L and outward in the width direction W in the plan view than the traditional Chinese medicine material layer 45. In the sanitary napkin 1, there is a region VM2 where a part of the traditional Chinese medicine material layer 45 and a part of the solvent layer 52a do not overlap in the thickness direction T, and thus there is a region where the traditional Chinese medicine material is present but the lipophilic solvent is not present. This is to facilitate the elution of water-soluble components of the herbal materials into body fluids, sweat, and other water. The planar shape of the solvent layer 52a is arbitrary.
In another embodiment, one of the solvent layer 51a and the solvent layer 52a is provided, and the other is not provided. In still another embodiment, at least one of (a part of) the solvent layer 51a and (a part of) the solvent layer 52a is located in substantially the same range in the thickness direction T as (a part of) the surface of the liquid-permeable sheet 7 on the non-skin side and/or the surface or the inside of the absorbent body 11 on the skin side. In this case, it can be said that at least one of the part of the solvent layer 51a and the part of the solvent layer 52a overlaps the part of the chinese medicinal material layer 45 in the planar direction (the longitudinal direction or the width direction). Such a state is, for example, a state in which one of the part of the chinese medicinal material layer 45 and the part of the solvent layer 51a (, 52a) is embedded in the other.
The sanitary napkin 1 includes a temperature-sensitive body 5 comprising: a layer 47 of other traditional Chinese medicine material containing traditional Chinese medicine material having water-soluble components and lipophilic components; and an other solvent layer 51b containing a lipophilic solvent. The chinese medicinal material layer 47 has a plurality of stripe shapes extending in the longitudinal direction L and arranged at predetermined intervals in the width direction W, and is located on the skin-side surface or inside of the temperature-sensitive agent holding sheet 13 in the thickness direction T. The traditional Chinese medicine material layer 47 is formed in a central region in the widthwise direction W of the temperature sensitive agent holding sheet 13 across both end edges in the longitudinal direction L of the temperature sensitive agent holding sheet 13 in a plan view. In another embodiment, the traditional Chinese medicine material layer 47 is positioned on the non-skin side surface of the liquid-permeable sheet 7 in the thickness direction T. In addition, the planar shape of the Chinese medicinal material layer 47 is arbitrary.
The solvent layer 51b has a plurality of stripe shapes extending in the longitudinal direction L and arranged at predetermined intervals in the width direction W, and is positioned on the non-skin side surface of the liquid-permeable sheet 7 in the thickness direction T. The width of the solvent layer 51b is larger than the width of the Chinese medicine material layer 47 in the width direction W. The part of the traditional Chinese medicine material layer 47 overlaps the part of the solvent layer 51b in the thickness direction T, and the part of the traditional Chinese medicine material layer 47 is located on the non-skin side of the part of the solvent layer 51 b. From the viewpoint that lipophilic components are easily eluted into the lipophilic solvent, a part of the traditional Chinese medicine material layer 47 is in direct contact with a part of the solvent layer 51b in the thickness direction T. In addition, there is a region where a part of the traditional Chinese medicine material layer 47 and a part of the solvent layer 51b do not overlap in the thickness direction T, that is, there is a region where the traditional Chinese medicine material is present but the lipophilic solvent is not present. This is to facilitate the elution of water-soluble components of the herbal materials into body fluids, sweat, and other water. In addition, as another embodiment, in the case where the traditional Chinese 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 positioned on the skin side of the traditional Chinese medicine material layer 47 in the liquid-permeable sheet 7 in the thickness direction T. 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 temperature-sensitive body 5. The solvent layer 50a is located on the non-skin side of the herbal material layer 47 in the thickness direction T and on the skin side surface or inside of the temperature-sensitive agent holding sheet 13 in the region excluding both end portions in the width direction W of the temperature-sensitive agent holding sheet 13 in a plan view. The part of the traditional Chinese medicine material layer 47 and the part of the solvent layer 50a overlap in the thickness direction T, and the part of the traditional Chinese medicine material layer 47 is located on the local skin side of the solvent layer 50 a. From the viewpoint that lipophilic components are easily eluted into the lipophilic solvent, a part of the traditional Chinese medicine material layer 47 is in direct contact with a part of the solvent layer 50a in the thickness direction T. From the viewpoint that the lipophilic component is likely to contact the lipophilic solvent, the solvent layer 50a protrudes outward in the width direction W in plan view from the traditional Chinese medicine material layer 47. In another embodiment, the sanitary napkin 1 has a region where a part of the traditional Chinese medicine material layer 47 does not overlap with a part of the solvent layer 50a in the thickness direction T, that is, a region where the traditional Chinese medicine material is present but the lipophilic solvent is not present. This is to facilitate the elution of water-soluble components of the herbal materials into body fluids, sweat, and other water. 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 still another embodiment, at least one of (a part of) the solvent layer 51b and (a part of) the solvent layer 50a is located in substantially the same range in the thickness direction T as (a part of) the surface of the liquid-permeable sheet 7 on the non-skin side and/or the surface or the inside of the warming-agent-holding sheet 13 on the skin side. In this case, it can be said that at least one of the part of the solvent layer 51b and the part of the solvent layer 50a overlaps the part of the chinese medicine material layer 47 in the planar direction (the longitudinal direction or the width direction). Such a state is, for example, a state in which one of the part of the chinese medicinal material layer 47 and the part of the solvent layer 51b (, 50a) is embedded in the other. In addition, the sanitary napkin 1 may have at least one of the traditional Chinese medicine material layer 45 and the traditional Chinese medicine material layer 47.
In the present embodiment, the range in the longitudinal direction L of the absorption body 3 is set to a range from the rear end edge of the sanitary napkin 1 to the front end edge 11E1 of the absorbent body 11. On the other hand, the range in the longitudinal direction L of the temperature-sensitive body 5 is from the front end edge 11E1 of the absorbent body 11 to the front end edge of the sanitary napkin 1. The absorption body 3 and the temperature-sensitive body 5 each have a range in the width direction W that extends over the entire width. In this case, it can be said that the overlapping portion 15 is included in the absorption body 3, and the rear end portion of the temperature sensitive agent holding sheet 13 of the temperature sensitive body 5 in the longitudinal direction L protrudes into the absorption body 3. The absorbent body 3 is divided in the longitudinal direction L into a front region 3a from the widthwise center line CW to the front end edge 11E1 of the absorbent body 11 and a rear region 3b from the widthwise center line CW to the rear end edge of the sanitary napkin 1. Here, the front and rear end edges of the sanitary napkin 1 in the longitudinal direction L, the front and rear end edges 11E1, 11E2 of the absorbent body 11, and the front and rear end edges 13E1, 13E2 of the temperature-sensitive agent holding sheet 13 are all located at the outermost positions in the longitudinal direction L. In the present embodiment, the end edges 11E1, 11E2 and the end edges 13E1, 13E2 are all defined as intersections with the longitudinal center line CL.
In the present embodiment, in the sanitary napkin 1, the excretory opening contact region 21 is located slightly forward of the center in the longitudinal direction L and at the center in the width direction W in the absorbent body 3 in a plan view, and the non-excretory opening contact region 23 is located around this as the other region. The excretory opening contact region 21 is a region that faces or contacts the excretory opening of the wearer when the sanitary napkin 1 is worn. The excretory opening contact region 21 is determined according to the type and use of the absorbent article. The excretory opening contact region 21 is formed, for example, in the longitudinal direction L, at a position slightly forward of the center of the absorbent body 11, with a length of about 1/4 to 2/3 of the total length of the absorbent body 11 in the longitudinal direction L, and in the width direction W, at a substantially center of the absorbent body 11, with a width of about 1/3 to 3/4 of the total length of the absorbent body 11 in the width direction W. When the pair of wing portions 17, 17 are present as in the present embodiment, the center in the longitudinal direction L of the excretory opening contact region 21 is located on a line connecting the centers in the longitudinal direction L of the pair of wing portions 17, 17 in the width direction W. Alternatively, in the case where the absorbent body 11 is of a so-called hourglass shape, the center in the longitudinal direction L of the excretory opening contact region 21 is located at a position where the dimension in the width direction W of the absorbent body is smallest, excluding both ends in the longitudinal direction L of the absorbent body. Wherein positional deviation within a range of a predetermined length is allowed. The predetermined length is set to be 5% of the length of the absorbent body 11 in the longitudinal direction L.
The liquid-permeable sheet (sheet member) 7 overlaps the absorbent body 11 in the thickness direction T, and includes a front sheet 7a and a pair of side sheets 7b and 7b joined to both sides of the front sheet 7a in the width direction W. The dimension of the top sheet 7a in the width direction W is approximately the same as the dimension of the absorbent body 11 in the width direction W. Each side sheet 7b includes a leakage preventing wall 7W located at an inner end in the width direction W and extending in the longitudinal direction L. That is, the liquid-permeable sheet 7 includes a pair of leakage preventing walls 7W, 7W. Each of the leakage preventing walls 7W extends upward in the thickness direction T of the front sheet 7a with the outer edge as a fixed end and the inner edge as a free end in the width direction W. The pair of leakage preventing walls 7W, 7W are formed so that the free ends can stand up toward the skin when the sanitary napkin 1 is worn. The pair of leakage preventing walls 7W, 7W are formed on the absorption body 3 and the temperature sensitive body 5, and suppress leakage of the body fluid mainly to the outside in the width direction W, and also suppress escape of the air warmed by the temperature sensitive effect of the temperature sensitive body 5 to the outside in the width direction W to hold the air.
In another embodiment, the front sheet 7a includes leakage preventing walls 7W extending in the longitudinal direction L at both ends in the width direction W. In another embodiment, the liquid-permeable sheet 7 does not have the pair of side sheets 7b, 7 b. In another embodiment, the liquid-permeable sheet 7 does not have a pair of leakage preventing walls 7W, 7W. In another embodiment, the liquid-permeable sheet 7 includes a liquid diffusion sheet (sheet member) that is in contact with the non-skin side of the top sheet 7a, overlaps the absorber 11 in the thickness direction T, and diffuses body fluid in the planar direction. In another embodiment, the surface sheet 7a has: a plurality of projections extending continuously or intermittently along the longitudinal direction L; and a plurality of concave portions located between the convex portions adjacent to each other and extending continuously or intermittently in the longitudinal direction L.
The absorber 11 includes an absorbent core (not shown) and a core cladding (not shown) that wraps the absorbent core. The absorber 11 is divided in the longitudinal direction L into a central region 62 located substantially at the center, 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 drain port contact region 21 and is located in a range up to a position further forward in the longitudinal direction L. The layer 45 of traditional Chinese medicine material is located in the central region 62. The weight per unit area of the central region 62 is higher than the weight per unit area of the front region 61 and the rear region 63. Therefore, in the absorbent body 11, the weight per unit area of the region on the front side in the longitudinal direction L with respect to the widthwise center line CW is higher than the weight per unit area of the region on the rear side in the longitudinal direction L with respect to the widthwise center line CW. That is, in the absorbent body 11, the area from the width direction center line CW to the front end edge 11E1 in the longitudinal direction L has a higher weight per unit area than the area from the width direction center line CW to the rear end edge 11E2 in the longitudinal direction L. This can increase the amount of absorption of the excretory opening contact region 21 slightly forward of the center in the longitudinal direction L, and can reliably absorb body fluid with the absorbent body 11 even when the sanitary napkin 1 is worn with the excretory opening of the wearer slightly offset forward in the longitudinal direction L relative to the excretory opening contact region 21. In another embodiment, the basis weight of the absorbent body 11 is higher in a specific portion different from the above, or is substantially constant in the entire region. In another embodiment, the absorber 11 does not use a core cladding.
The temperature-sensitive agent holding sheet 13 (functional layer; temperature-sensitive member) is composed of one or more layers of sheet materials such as nonwoven fabric, and contains a temperature-sensitive agent 50 (functional agent). The shape of the temperature-sensitive agent holding sheet 13 is not particularly limited as long as it can be disposed inside the peripheral edge portion 27 of the sanitary napkin 1 that suppresses leakage of the temperature-sensitive agent 50, and examples thereof include a shape obtained by similarly reducing the shape of the temperature-sensitive body 5. The temperature-sensitive agent 50 contains a temperature-sensitive component that stimulates the temperature receptors of the skin (thermal perception receptors) without heating the body of the wearer of the sanitary napkin 1 or the vicinity thereof and allows the wearer to perceive a temperature, and further contains a solvent component that dissolves or disperses the temperature-sensitive component. The temperature sensitive agent 50 contains a fluid component or a volatile component which is in the form of a gas or a liquid and which can move from the disposed portion under the influence of temperature, gas pressure, external force, or the like, and at least one of the temperature sensitive component and the solvent component contains a fluid component or a volatile component, for example. Even if the temperature-sensitive agent holding sheet 13 is disposed at a position on the non-skin side of the liquid-permeable sheet 7, the temperature-sensitive agent 50 of the temperature-sensitive agent holding sheet 13 can penetrate through the liquid-permeable sheet 7 and come into contact with the skin of the lower abdomen of the wearer by, for example, elution or volatilization when the sanitary napkin 1 is worn. Thus, the temperature sensitive component of the temperature sensitive agent 50 can stimulate the thermal sensory receptors of the skin and impart a temperature sensation to the lower abdomen of the wearer. In the present embodiment, the solvent component of the temperature sensitive agent 50 is the same as (the solvent component of) the solvent layer 50 a. Thus, the temperature sensitive agent 50 is present at the position of the solvent layer 50 a. By sharing the solvent components of the two, the distance between the herbal material layer 47 and the temperature sensitive agent 50 and the skin surface of the wearer can be shortened, and the thickness can be reduced to improve the wearing feeling.
In the present embodiment, the temperature sensitive agent 50 is disposed in the temperature sensitive agent holding sheet 13 in a range substantially equal to or slightly larger than the width of the top sheet 7a (or the absorbent body 11) in the width direction W and in a range extending between both end edges in the longitudinal direction L in a plan view. In another embodiment, the temperature sensitive agent 50 is disposed in the entire central portion 25 of the temperature sensitive agent holding sheet 13 excluding the peripheral edge portion in a plan view. This expands the effect of the temperature sensitive agent 50 over a wider range. In another embodiment, the temperature sensitive agent 50 is disposed on the entire surface of the temperature sensitive agent holding sheet 13 including the peripheral edge portion in a plan view. In still another embodiment, the temperature sensitive agent 50 is arranged in a plurality of stripes extending in the longitudinal direction L and arranged at predetermined intervals in the width direction W. The temperature sensitive agent can be easily applied. In yet another embodiment, the temperature sensitive agent 50 does not contain a solvent component. In another embodiment, the temperature-sensitive body 5 has a support sheet for supporting the temperature-sensitive agent holding sheet 13 on the non-skin side of the temperature-sensitive agent holding sheet 13. In another embodiment, the temperature-sensitive body 5 does not include the temperature-sensitive agent 50 in the temperature-sensitive agent holding sheet 13, and therefore, the temperature-sensitive agent holding sheet 13 serves as a heat retaining sheet for retaining heat in the lower abdomen. In this case, the solvent layer 50a is additionally formed. The planar shape of the temperature sensitive agent 50 is arbitrary.
In the present embodiment, the absorbent body 11 contains a temperature sensitive agent 52 (functional agent). The temperature sensitive agent 52 is disposed on the skin-side surface of the absorber 11 in a plurality of stripe-shaped (continuous or intermittent) portions extending in the longitudinal direction L and arranged in the width direction W. In this case, the range in the width direction W in which the temperature sensitive agent 52 is disposed is substantially within the range in the width direction W of the top sheet 7 a. The temperature sensitive agent 52 is disposed at a position different from that of the temperature sensitive agent 50, but has the same properties. In another embodiment, the temperature sensitive agent 52 is disposed in another part of the absorbent body 11, for example, on the surface on the non-skin side or inside. In yet another embodiment, the absorbent body 11 does not contain a temperature sensitive agent 52. In the present embodiment, the solvent component of the temperature sensitive agent 52 is the same as (the solvent component of) the solvent layer 52 a. Thus, the temperature sensitive agent 52 is present at the position of the solvent layer 52 a. By sharing the solvent components of the two components, the distance between the herbal material layer 45 and the temperature sensitive agent 52 and the skin surface of the wearer can be shortened, and the thickness can be reduced to improve the wearing feeling.
In the present embodiment, the liquid-permeable sheet 7 (sheet member) contains a temperature-sensitive agent 51 (functional agent). The temperature sensitive agent 51 is disposed on the non-skin side surface of the liquid-permeable sheet 7 in a plurality of stripe-shaped (continuous or intermittent) portions extending in the longitudinal direction L and arranged in the width direction W. In this case, the range in the width direction W in which the temperature sensitive agent 51 is disposed is substantially within the range in the width direction W of the absorbent body 11. The temperature sensitive agent 51 is disposed at a position different from that of the temperature sensitive agent 50, but has the same properties. In another embodiment, the temperature sensitive agent 51 is disposed on another part of the liquid-permeable sheet 7, for example, on the skin side surface. In another embodiment, the liquid-permeable sheet 7 does not contain the temperature-sensitive agent 51. In the present embodiment, the solvent component of the temperature sensitive agent 51 is the same as (the solvent component of) the solvent layer 51a and (the solvent component of) the solvent layer 51 b. Therefore, the temperature sensitive agent 51 is present at the positions where the solvent layers 51a and 51b are present. By using these solvent components in common, the distance between the layers 45, 47 of traditional Chinese medicine and the temperature sensitive agent 51 and the skin surface of the wearer can be shortened, and the thickness can be reduced to improve the wearing feeling.
In the present embodiment, the temperature sensitive components of the temperature sensitive agent 50, the temperature sensitive agent 51, and the temperature sensitive agent 52 are the same. In another embodiment, at least one of the temperature-sensitive components of the temperature- sensitive agents 50, 51, and 52 is different from the remaining temperature-sensitive components. In the present embodiment, the solvent components of the temperature sensitive agent 50, the temperature sensitive agent 51, and the temperature sensitive agent 52 are the same. In another embodiment, at least one of the solvent components of the temperature sensitive agent 50, the temperature sensitive agent 51, and the temperature sensitive agent 52 is different from the remaining solvent components. In still another embodiment, at least one of the temperature-sensitive components of the temperature- sensitive agents 50, 51, and 52 includes a heat-generating component that generates heat by itself to heat the body of the wearer of the sanitary napkin 1 or the vicinity thereof. When the sanitary napkin 1 contains a temperature-sensitive agent, at least one of the temperature- sensitive agents 50, 51, and 52 may be contained.
In the sanitary napkin 1, the liquid-impermeable sheet 9 (the 2 nd sheet member) is a sheet having liquid impermeability and overlapping the absorbent body 11 in the thickness direction T. In another embodiment, the liquid-impermeable sheet 9 is also not breathable (is non-breathable). Therefore, the sanitary napkin 1 is configured such that air present in the region closer to the skin than the liquid-impermeable sheet 9 is less likely to escape to the non-skin side of the liquid-impermeable sheet 9, that is, to the outside of the sanitary napkin 1. In other words, the sanitary napkin 1 is configured such that it is difficult for air warmed by the temperature sensing effect to escape to the outside of the sanitary napkin 1.
The sanitary napkin 1 includes an adhesive portion for fixing the sanitary napkin 1 to the clothing of the wearer in both the absorption body 3 and the temperature-sensitive body 5. One surface of the adhesive part 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. The absorption body 3 is provided with: adhesive sections 73 arranged in a region overlapping the absorbent body 11 in a plan view, for example, extending in the longitudinal direction L and arranged intermittently in the width direction W; and an adhesive portion 71 extending in the longitudinal direction L at a substantially central portion in the width direction W of the wing portion 17. On the other hand, the adhesive portions 72 are disposed in the regions of both end portions in the width direction W of the temperature-sensitive body 5. In another embodiment, the other surface of the adhesive portion is temporarily fixed to the release sheet fixed to the individual packaging sheet 43.
As shown in fig. 1, the individual package (sanitary napkin 1+ individual package sheet 41) has a longitudinal 1 st fold line F1 (for example, a left fold line) and a longitudinal 2 nd fold line F2 (for example, a right fold line), and a width 1 st fold line F3 (for example, a front fold line) and a width 2 nd fold line F4 (for example, a rear fold line). The longitudinal direction 1 st folding line F1 and the longitudinal direction 2 nd folding line F2 extend along the longitudinal direction L, and are arranged in parallel with each other at a predetermined interval from one side to the other side in the width direction W. The width-direction 1 st folding line F3 and the width-direction 2 nd folding line F4 extend in the width direction W and are arranged in parallel with each other at predetermined intervals from one side to the other side in the longitudinal direction L. That is, the number of the longitudinal folding lines is 2, and the number of the width folding lines is 2. The 1 st fold line F3 in the width direction is disposed in front of the sanitary napkin 1, and the 2 nd fold line F4 in the width direction is disposed behind the sanitary napkin 1. The widthwise 1 st fold line F3 is located at the front end of the absorption body 3 and the rear end of the temperature sensitive body 5. Specifically, the widthwise 1 st fold line F3 is located closer to the widthwise center line CW than the front end edge 11E1 in the longitudinal direction L of the absorbent body 11. The width direction 1 st folding line F3 and the width direction 2 nd folding line F4 are located on the front side and the rear side in the longitudinal direction L of the drain contact region 21 so as to avoid the drain contact region 21. In another embodiment, there is no longitudinal fold. In still another embodiment, the number of the width-direction folding lines is 1 or 3 or more.
When the sanitary napkin 1 is individually packaged, the portions (the pair of outer portions) on the outer sides in the width direction W from the longitudinal direction 1 folding line F1 and the longitudinal direction 2 folding line F2 are folded toward the skin side surface together with the individual packaging sheet 41 on the basis of the longitudinal direction 1 folding line F1 and the longitudinal direction 2 folding line F2. Next, the sanitary napkin 1 folded together with the individual packaging sheet 41 is folded with the widthwise 1 st fold line F3 and the widthwise 2 nd fold line F4 as base axes, and portions on the outer side in the longitudinal direction L than both fold lines are respectively folded toward the skin side surface. Thereafter, one end portion of the individual packaging sheet 41 is fixed to the individual packaging sheet 41 facing thereto by the fixing tape 43. This forms an independent package of the sanitary napkin 1. Further, when the sanitary napkin 1 is used, that is, when the individual package is opened, the opening is performed in a reverse procedure to that in the individual package.
The sanitary napkin 1 further includes a plurality of compressed portions 31 and 33. The plurality of compressed portions 31 are arranged continuously or intermittently in a curved shape so as to surround the excretory opening contact region 21 mainly in the absorption body 3. The plurality of compressed parts 33 are disposed in a dot-like manner and dispersed in a region surrounded by the plurality of compressed parts 31 of the absorption body 3. The compression portions 31 and 33 are formed by compressing the liquid-permeable sheet 7 and the absorbent body 11 (the overlapping portion 15 further includes the warming agent holding sheet 13) from the skin side toward the non-skin side. The shape and arrangement of the plurality of compressing portions 31 and 33 are arbitrary. In another embodiment, the temperature-sensitive body 5 further includes one or more compressed portions formed by compressing the liquid-permeable sheet 7 and the temperature-sensitive agent holding sheet 13 (the absorbent body 11 is further included in the superposed portion 15) from the skin side to the non-skin side. The shape of the compression portion is arbitrary.
The sanitary napkin 1 further includes a seal portion 29. The sealing portion 29 is formed by joining and sealing 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 absorber 11 and the temperature sensitive agent-retaining sheet 13 are bonded to each other with an adhesive (exemplified by a hot melt adhesive) or the like, and the non-skin side surfaces of the absorber 11 and the temperature sensitive agent-retaining sheet 13 and the skin side surface of the liquid-impermeable sheet 9 are bonded to each other with an adhesive (the same applies to) or the like.
In the sanitary napkin 1, the traditional Chinese medicine material having a water-soluble component and an oleophilic component in the traditional Chinese medicine material layers 45 (and 47) and the oleophilic solvent in the solvent layer 51a (and 51b) are partially overlapped in the thickness direction T (in another embodiment, may be in the planar direction, and hereinafter, may be referred to as "thickness direction T, etc.), and are positioned at least in one of the absorbent body 11 and the liquid-permeable sheet 7. Therefore, in the region where the traditional Chinese medicine material and the lipophilic solvent overlap in the thickness direction T or the like, when the body fluid is excreted into the sanitary napkin 1 and transferred and diffused in the liquid-permeable sheet 7 and the absorbent body 11, a part of the body fluid passes through the traditional Chinese medicine material and the lipophilic solvent. As a result, the lipophilic solvent is transferred and diffused along with the flow, transfer, and diffusion of the body fluid, and comes into contact with at least a part of the traditional Chinese medicine material. This allows the lipophilic component of the traditional Chinese medicine material to be dissolved in the lipophilic solvent. Then, the lipophilic solvent containing the lipophilic component diffuses or volatilizes, and the lipophilic solvent can reach the skin of the wearer. Alternatively, in a state where the lipophilic solvent containing the lipophilic component is contained in moisture such as body fluid or sweat, for example, in an oil film state on the substantial surface of the moisture, the moisture is converted into steam or diffused so as to return to the skin side by the body pressure applied to the sanitary napkin 1, and the lipophilic solvent can reach the skin of the wearer together with the moisture. That is, the lipophilic component of the traditional Chinese medicine material can reach the skin of the wearer.
On the other hand, in the regions VM1 or the like (or the regions that may be partially overlapped) where the herbal materials in the herbal material layers 45 (or 47) and the lipophilic solvent in the solvent layers 51a (or 51b) do not overlap in the thickness direction T or the like, when the body fluid is transferred and diffused in the liquid-permeable sheet 7 and the absorbent body 11, a part of the body fluid reaches the herbal materials without passing through the lipophilic solvent. Alternatively, sweat or the like released from the skin diffuses in the liquid-permeable sheet 7 and reaches the traditional Chinese medicine material. That is, the moisture of the body fluid, sweat, etc. flows, transfers, and diffuses to contact the Chinese medicinal material. This makes it possible to dissolve the water-soluble components of the herbal material into the moisture of body fluid, sweat, etc. In this case, since the lipophilic solvent is not present in the vicinity, it is possible to suppress the lipophilic solvent from covering the traditional Chinese medicine materials and making it difficult for water to reach the traditional Chinese medicine materials. Then, the moisture containing the water-soluble component is converted into steam or diffused toward the skin side by the body pressure applied to the sanitary napkin 1, so that the moisture containing the water-soluble component can reach the skin of the wearer. That is, the water-soluble components of the traditional Chinese medicine material can reach the skin of the wearer.
Here, even if the crude drug or an extract of the crude drug (hereinafter, also referred to as "crude drug or the like") contained in the traditional Chinese medicine material is one type, the crude drug or the like may contain not only a component that is easily soluble in water (water-soluble) but also a component that is easily soluble in an oil (lipophilic). In addition, there are cases where the crude drugs and the like contained in the Chinese medicinal material are in various forms, and the various crude drugs and the like include not only crude drugs and the like having a component that is easily soluble in water (water-soluble) but also crude drugs and the like having a component that is easily soluble in oil (lipophilic). Even in the sanitary napkin 1 containing such a traditional Chinese medicine material, that is, the sanitary napkin 1 in which the traditional Chinese medicine material contains both water-soluble and lipophilic components, as described above, both lipophilic and water-soluble components of the traditional Chinese medicine material can easily reach the skin of the wearer.
Thus, in the sanitary napkin 1, not only the water-soluble component of the traditional Chinese medicine material can easily reach the skin of the wearer, but also the lipophilic component can easily reach the skin of the wearer, thereby exerting the effects of the traditional Chinese medicine material, such as the effects of making blood flow and blood circulation good and warming the body.
Next, a preferred method of using the sanitary napkin 1 of the present embodiment will be described.
When the sanitary napkin 1 is worn by a wearer, the sanitary napkin 1 is fixed to a garment (exemplified by underpants) so that the excretory opening contact region 21 of the absorbent body 11 of the absorbent body 3 corresponds to the excretory opening of the wearer. Thus, the sanitary napkin 1 is fixed to the clothing so that the temperature-sensitive agent holding sheet 13 of the temperature-sensitive body 5 corresponds to the lower abdomen of the wearer and the traditional Chinese medicine material layer 45 of the absorption body 3 corresponds to the excretion portion. Then, the sanitary napkin 1 is used in a state where the skin-side surface of the temperature-sensitive body 5 is in contact with the skin of the lower abdomen of the wearer and the skin-side surface of the absorption body 3 is in contact with the skin in the vicinity of the excretory opening of the wearer.
In other words, the sanitary napkin 1 has the following shape: when the absorbent main body 3 is placed on the clothing so that the excretory opening contact region 21 of the absorbent body 11 contacts the excretory opening of the wearer, the temperature sensitive agent retaining sheet 13 is placed at a position corresponding to the lower abdomen of the wearer. Therefore, the distance between the excretory opening contact region 21 of the absorbent body 11 of the absorbent body 3 and the temperature sensitive agent retaining sheet 13 of the temperature sensitive body 5 is substantially equal to the distance between the excretory opening of the wearer and the lower abdomen (distance on the skin surface).
In the present embodiment, the temperature sensitive agent 50 (functional agent) of the temperature sensitive agent-holding sheet 13 contains a temperature sensitive component for activating the TRP channel and a solvent component. Therefore, when the sanitary napkin 1 is used by being fixed to clothing, the temperature sensitive agent 50 contained in the temperature sensitive agent-retaining sheet 13 penetrates through the liquid-permeable sheet 7 and comes into contact with the skin of the wearer, and the TRP channel in the temperature sensitive agent-contacting portion of the skin of the wearer which is in contact with the temperature sensitive component can be activated efficiently, thereby imparting a temperature sensation to the lower abdomen of the wearer efficiently.
By imparting a temperature sensation to the lower abdomen of the wearer, the TRP channel of the temperature sensitive component-contacting portion of the skin of the lower abdomen of the wearer is activated, and as a result, heat is generated from the temperature sensitive component-contacting portion via the sympathetic nervous system, and the temperature of the temperature sensitive component-contacting portion of the skin of the wearer can be expected to increase. As a result, it is expected that the site close to the uterus of the wearer is warmed, the pain substance prostaglandin is discharged, and the dysmenorrhea of the wearer is alleviated. By warming the portion near the uterus of the wearer, it is expected to alleviate Premenstrual Syndrome (Premenstrual Syndrome), cold symptoms, climacteric disorders, and the like of the wearer. It is expected to promote blood flow (lymph flow) to discharge metabolites, improve cold syndrome, increase fat burning, and improve immunity. In addition, when the effect of the traditional Chinese medicine material is an effect of warming the body by improving blood flow and blood circulation, the sanitary napkin 1 can further warm the body by the synergistic effect of the temperature sensitive agent and the traditional Chinese medicine material.
In the present embodiment, the solvent layer 51a is preferably located on the skin side of the herbal material layer 45. Therefore, when the body fluid is excreted into the sanitary napkin 1 and transferred and diffused in the liquid-permeable sheet 7 and the absorbent body 11, the body fluid and the lipophilic solvent can reliably pass through the traditional Chinese medicine material. Therefore, the lipophilic component of the traditional Chinese medicine material can be further dissolved in the lipophilic solvent, and the lipophilic component of the traditional Chinese medicine material can be further made to reach the skin of the wearer.
In the present embodiment, as a preferred mode, the solvent layer 52a is positioned on the non-skin side of the herbal material layer 45 in addition to the solvent layer 51a positioned on the skin side of the herbal material layer 45. Therefore, when the body fluid is excreted into the sanitary napkin 1 and transferred and diffused in the liquid-permeable sheet 7 and the absorbent body 11, the body fluid and the lipophilic solvent can more reliably pass through the traditional Chinese medicine material. Therefore, the lipophilic component of the traditional Chinese medicine material can be further dissolved in the lipophilic solvent, and thus the lipophilic component of the traditional Chinese medicine material can further reach the skin of the wearer.
The center portion in the width direction W of the sanitary napkin 1 is in contact with the excretory opening of the wearer and the region in the vicinity thereof, that is, the region of sensitive skin. Therefore, in the present embodiment, the solvent layer 51a (or 52a) is not disposed in the center portion in the width direction W of the sanitary napkin 1 as a preferable mode. That is, there are regions VM1(, VM2) in which (lipophilic components of) the herbal material of the herbal material layer 45 are present but the lipophilic solvent of the solvent layers 51a (, 52a) is not present. Therefore, the lipophilic component of the traditional Chinese medicine material can be made less likely to migrate to the region where the sensitive skin region is in contact with. This makes it possible to prevent the lipophilic component of the medicinal material from reaching the region other than the central portion in the width direction W of the sanitary napkin 1 and from directly reaching the sensitive skin region. Further, it is also conceivable that (a water-soluble component of) the traditional Chinese medicine material is present in the central portion in the width direction W of the sanitary napkin 1, and this component is likely to migrate to the excretory opening and the vicinity thereof. However, since this region is a region where body fluid from the excretory opening is directly excreted, the amount of transfer of this component to the excretory opening and the region in the vicinity thereof is suppressed to a certain extent to be low.
In the present embodiment, as a preferred mode, the present embodiment further includes a temperature sensitive agent 51 (or a temperature sensitive agent 52) having a temperature sensitive function and located at least one of the absorbent body 11 and the liquid-permeable sheet 7. Therefore, the air containing moisture such as sweat generated in the vicinity of the skin where the body temperature is raised by the effect of the temperature sensitive agent 51 (or the temperature sensitive agent 52) can swell the traditional Chinese medicine material to increase the surface area thereof, and the components of the traditional Chinese medicine material can be easily released. Further, since the lipophilic solvent can be warmed by the effect of the temperature sensitive agent 51 (or the temperature sensitive agent 52), the components of the traditional Chinese medicine material dissolved in the lipophilic solvent can be easily volatilized together with the moisture and/or the lipophilic solvent or can be volatilized separately. This allows the components of the traditional Chinese medicine material to reach the skin of the wearer. Thus, when the effect of the traditional Chinese medicine material is an effect of warming the body by improving blood flow and blood circulation, the sanitary napkin 1 can further warm the body by the synergistic effect of the temperature sensitive agent and the traditional Chinese medicine material.
In the present embodiment, as a preferable mode, the sanitary napkin further includes a temperature sensitive agent holding sheet 13 which includes another temperature sensitive agent 50 having a temperature sensitive function at a position on the front side (ventral side) (in another embodiment, the rear side (back side) or the like) in the longitudinal direction L of the sanitary napkin 1 in a plan view from the absorbent body 11. The liquid-permeable sheet 7 projects forward (toward the abdomen) in the longitudinal direction L from the absorbent body 11 in plan view, overlaps the temperature sensitive agent holding sheet 13 in the thickness direction T, and is positioned closer to the skin than the temperature sensitive agent holding sheet 13. Therefore, when the sanitary napkin 1 is worn on the wearer, the abdomen side (in another embodiment, the back side, hereinafter also referred to as "abdomen side or the like") of the wearer can be warmed by the temperature sensitive agent 50. This allows the components of the herbal material to reach the skin of the wearer, and allows the abdomen to be warmed by another temperature sensitive agent located on the front side (abdomen side) or the like.
As another embodiment, the sanitary napkin 1 includes: a layer 47 of another traditional Chinese medicine material, which is located on at least one of the warming agent-retaining sheet 13 and the liquid-permeable sheet 7 and contains another traditional Chinese medicine material having a water-soluble component and a lipophilic component; and another solvent layer 51b (50 a) which is located on at least one of the temperature-sensitive agent holding sheet 13 and the liquid-permeable sheet 7 and contains another lipophilic solvent. In addition, a part of the other Chinese medicinal material layer 47 and a part of the other solvent layer 51b (, 50a) overlap in the thickness direction T or the like. That is, in the sanitary napkin 1, other traditional Chinese medicine materials and other lipophilic solvents are partially overlapped in the thickness direction T or the like at a position on the front side (ventral side) or the like in the longitudinal direction L with respect to the absorbent body 11, and are positioned at least in one of the temperature sensitive agent holding sheet 13 and the liquid permeable sheet 7. Therefore, when the sanitary napkin 1 is worn on a wearer, the temperature sensitive agent 50 can warm the front side (ventral side) of the wearer and the like, and the other traditional Chinese medicine materials can be swollen by air containing moisture such as sweat generated in the vicinity of the skin whose body temperature has been raised by the effect of the temperature sensitive agent 50, thereby increasing the surface area and facilitating the release of the components of the other traditional Chinese medicine materials. Further, the lipophilic solvent can be warmed by the air warmed by the effect of the temperature sensitive agent 50, and therefore, the components of the other traditional Chinese medicine materials dissolved in the lipophilic solvent can be easily volatilized together with the moisture and/or the solvent or can be volatilized separately. This allows the other components of the herbal material 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 the present embodiment, the temperature- sensitive agents 50, 51, and 52 preferably include a temperature-sensitive component for allowing the wearer to perceive a temperature and a solvent component for dissolving or dispersing the temperature-sensitive component, and the solvent component is a lipophilic solvent. Therefore, (the solvent component of) the temperature sensitive agents 50, 51, and 52 can be the solvent layers 50a, 51b, and 52a, and thus it is not necessary to provide a separate solvent layer, or the area or thickness of the solvent layer can be reduced. This can shorten the distance between the herbal material layers 45, 47 and/or the temperature sensitive agents 50, 51, 52 and the skin surface of the wearer, and thus the herbal material layers 45, 47 and/or the temperature sensitive agents 50, 51, 52 can be further brought to the skin of the wearer.
As a traditional Chinese medicine, there is a traditional Chinese medicine obtained by mixing a plurality of crude drugs or extracts of these crude drugs in order to improve the drug efficacy. Therefore, in the present embodiment, as a preferred mode, a Chinese medicine material is used which is obtained by mixing 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. Even in such a case, in the present absorbent article, by dissolving the water-soluble component in the moisture of body fluid, sweat, or the like and dissolving the lipophilic component in the lipophilic solvent, it is possible to further allow the components of these traditional Chinese medicine materials to reach the skin of the wearer. Therefore, even if the Chinese medicinal material is a Chinese medicinal material obtained by mixing a plurality of crude drugs or extracts of the crude drugs, each crude drug or component of the extract of the crude drug can be effectively used without separating the crude drugs or the extracts of the crude drugs.
In the sanitary napkin 1 of the present embodiment, as a preferable mode, the distance between the widthwise center line CW and the front end edge 11E1 of the absorbent body 11 is longer than the distance between the front end edge 11E1 of the absorbent body 11 and the front end edge of the sanitary napkin 1 in the longitudinal direction L. Therefore, in the front region in the longitudinal direction L of the sanitary napkin 1, a region of the absorbent body 11 capable of absorbing body fluid can be sufficiently secured in the longitudinal direction L. Therefore, when the sanitary napkin 1 having the temperature sensitive body 5 on the front side in the longitudinal direction L and a relatively long front portion is worn on underwear, even if the wearer shifts the sanitary napkin 1 to the rear side by a necessary amount or more in anticipation of the protrusion of the front end portion, the region of the absorbent body 11 can be sufficiently secured in the front region of the sanitary napkin 1, and thus leakage of body fluid from the front side can be suppressed.
(embodiment 2)
The structure of the sanitary napkin 1a according to the present embodiment will be described. The sanitary napkin 1a of the present embodiment is different from the sanitary napkin 1 of embodiment 1 in that it does not have the temperature sensitive body 5. In short, the sanitary napkin 1a has a structure in which the temperature-sensitive body 5 is removed from the sanitary napkin 1. Hereinafter, differences between the sanitary napkin 1a and the sanitary napkin 1 will be mainly described.
Fig. 6 to 9 are views showing configuration examples of the sanitary napkin 1a according to the present embodiment. Fig. 6 is a plan view showing a state in which the sanitary napkin 1a is unfolded. Fig. 7 is a cross-sectional view of the sanitary napkin 1a shown in fig. 6 taken along the longitudinal center line CL. Fig. 8 is a schematic view showing the arrangement of the solvent layer 51a and the like in the liquid-permeable sheet 7 of the sanitary napkin 1 a. Fig. 9 is a schematic view showing the arrangement of the solvent layer 52a and the like of the sanitary napkin 1 a.
The sanitary napkin 1a of the present embodiment is different from the sanitary napkin 1 of embodiment 1 in that the traditional Chinese medicine material layer 45a is disposed in the longitudinal direction L in a range overlapping with the range from one end portion to the other end portion of the absorbent body 11 in the thickness direction T. By disposing the chinese medicinal material layer 45a in a longer range in the longitudinal direction L, the function of the chinese medicinal material can be further improved. In another embodiment, the chinese medicinal material layer 45a is arranged in the same manner as the chinese medicinal material layer 45 of embodiment 1. In another embodiment, the sanitary napkin 1a further includes a temperature-sensitive body 5 similar to that of embodiment 1.
(materials of sanitary napkin 1, etc.)
Next, materials and the like of the sanitary napkin 1 (including the sanitary napkin 1 a. the same applies hereinafter) according to each embodiment will be described.
In each of the above embodiments, the traditional Chinese medicine material layer 45(, the traditional Chinese medicine material layer 45a) included in the sanitary napkin 1 includes a traditional Chinese medicine material having a water-soluble component and a lipophilic component, and the solvent layer (, the other solvent layer) includes a lipophilic solvent.
Here, the traditional Chinese medicine material is a material containing traditional Chinese medicine, which is a medicament containing a traditional Chinese medicine prescription (prescription) and crude drugs. Crude drugs are drugs having active ingredients obtained by processing and adjusting natural raw materials (exemplified by plants, animals, and minerals) by a specific method. The traditional Chinese medicine prescription is a medicament obtained by combining a plurality of crude drugs. The Chinese medicinal material may be a medically, pharmaceutically or physiologically acceptable Chinese medicine or an extract obtained from the Chinese medicine, and there is no particular limitation on the crude drugs constituting the Chinese medicine, the combination thereof, and the blending ratio thereof. Examples of the Chinese medicinal materials include "crude drugs or Chinese medicinal formulae described in" entry to the New general Han prescription "(edited by the Japanese Han prescription crude drug formulation Association, published by Jiho corporation), and extracts obtained by extracting these crude drugs or Chinese medicinal formulae. Specifically, as the traditional Chinese medicine formula, a cassia twig-poria pill, a modified ease powder, a angelica-peony powder, a channel warming decoction, a ligusticum wallichii and glue-moxa decoction, a peony-licorice decoction, an angelica sinensis and tetrapsis sinensis plus evodia rutaecarpa and ginger decoction, a peach kernel and qi-supporting decoction, a rhubarb-moutan bark decoction, a five-ingredient powder and the like can be exemplified. Examples of crude drugs include colla Corii Asini, folium Artemisiae Argyi, rhizoma Zingiberis, radix Glycyrrhizae, radix Platycodonis, fructus Aurantii Immaturus, cortex cinnamomi japonici, cortex Magnoliae officinalis, fructus evodiae, radix bupleuri, herba asari, fructus Gardeniae, radix rehmanniae, radix Paeoniae, rhizoma Zingiberis, rhizoma Chuanxiong, rhizoma Atractylodis, and radix Et rhizoma Rhei, jujube (jujube), alisma orientale (rhizoma alismatis), dried orange peel (pericarpium citri reticulatae), Chinese waxgourd seed (semen benincasae), Chinese angelica (angelica sinensis), peach kernel (peach kernel), ginseng (ginseng), ophiopogon root (radix ophiopogonis), mint (mint), pinellia ternate (pinellia ternate), angelica dahurica, bighead atractylodes rhizome (rhizoma atractylodis macrocephalae), poria cocos (poria), mirabilite (mirabilite), moutan bark (cortex moutan bark), ephedra herb (ephedra herb), akebia stem (caulis akebiae) and the like.
The lipophilic (oil-soluble, fat-soluble) component of these traditional Chinese medicine materials is not particularly limited as long as it is soluble in a lipophilic solvent. Examples of such lipophilic components include fat-soluble polyphenols, gingerol, shogaol, and zingerone. The fat-soluble polyphenol can be extracted from, for example, angelica, ligusticum wallichii, and paeonia lactiflora with a lipophilic solvent. Gingerol and the like (body-warming components) can be extracted from ginger with a lipophilic solvent, for example.
On the other hand, the water-soluble components of these herbal materials are not particularly limited as long as they are soluble in moisture such as body fluid and sweat. Examples of such water-soluble components include water-soluble polyphenols and paeoniflorin. The water-soluble polyphenol can be extracted from, for example, angelica, ligusticum wallichii, and paeonia lactiflora with water. Paeoniflorin (analgesic component) can be extracted from peony with water, for example.
The lipophilic solvent is not particularly limited as long as it can dissolve lipophilic components contained in the herbal medicine materials. Examples of the lipophilic solvent include fats and oils. Examples of the oil and fat include natural oils such as vegetable oils and animal oils, and hydrocarbons. Examples of the natural oil include fatty acid esters such as triglycerides, coconut oil, linseed oil, and the like. Examples of the hydrocarbon include paraffin such as liquid paraffin. The lipophilic solvent is not necessarily in a liquid state, and may be a lipophilic solvent which is solid and is disposed on any material of the sanitary napkin 1, or a lipophilic solvent which is volatile depending on the temperature. The lipophilic solvent may be in a liquid state during the production of the sanitary napkin 1, but may be in a solid state at the time of completion of the production of the sanitary napkin 1, at the time of storage, or at the time of sale. In use, the liquid state is recovered due to an increase in the ambient temperature by body temperature or the like.
In each of the above embodiments, the temperature sensitive agent-holding sheet 13, the liquid-permeable sheet 7, and the absorbent body 11 have the temperature sensitive agent 50, the temperature sensitive agent 51, and the temperature sensitive agent 52 containing the temperature sensitive component and the solvent component for activating the TRP channel.
The temperature sensitive agents 50, 51, 52 contain, for example, a temperature sensitive component for activating a TRP channel (a thermoreceptor (a warming sensory receptor)) and a solvent component. The thermosensitive component is not particularly limited as long as it activates the TRP channel, and examples thereof include an agonist against TRPV1 receptor, an agonist against TRPV3 receptor, and the like, and preferably an agonist against TRPV 1. This is because, the activation temperature threshold of TRPV1 receptor is as high as exceeding 43 ℃, which can impart higher temperature sensation to the wearer.
The temperature-sensitive component is preferably a plant-derived compound from the viewpoint of the feeling of comfort of the wearer. Examples of the temperature-sensitive component include capsaicin, capsaicinoids (dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, homocapsaicin, nonivamide, etc.), capsorubin, benzyl nicotinate, β -butoxyethyl nicotinate, N-acetyl vanillylamide, vanillylnonanoate, polyol, paprika, capsicum tincture, capsicum extract, vanillyl nonanoate ether, vanillyl alcohol alkyl ether derivatives (exemplified by vanillyl ethyl ether, vanillyl alcohol butyl ether, vanillyl alcohol pentyl ether, vanillyl alcohol hexyl ether), isovanillyl alcohol alkyl ether, ethyl vanillyl alcohol alkyl ether, veratryl alcohol derivatives, substituted benzyl alcohol alkyl ethers, vanillin propylene glycol acetal, ethyl vanillin propylene glycol acetal, ginger extract, ginger oil, gingerol, zingerone, hesperidin, pyrrolidone carboxylic acid, and any combination thereof. Among them, from the viewpoint of making the wearer feel less painful, the temperature-sensitive component is preferably not capsaicin, and more preferably vanillyl alcohol alkyl ether derivatives (exemplified by vanillyl alcohol ethyl ether, vanillyl alcohol butyl ether, vanillyl alcohol pentyl ether, and vanillyl alcohol hexyl ether), ginger extract, ginger oil, gingerol, zingerone, and any combination thereof.
The solvent component is not particularly limited as long as it can contain a temperature sensitive component, and examples thereof include lipophilic solvents and hydrophilic solvents. Such a solvent component can dissolve, disperse, or the like the temperature sensitive component. Examples of the lipophilic solvent include fats and oils. Examples of the oils and fats include natural oils (e.g., fatty acid esters such as triglycerides, coconut oil, linseed oil, and the like), hydrocarbons (e.g., paraffins (e.g., liquid paraffin)), and the like. Examples of the hydrophilic solvent include water and alcohol. Examples of the alcohol include lower alcohols such as methanol, ethanol, ethylene glycol and glycerol, and higher alcohols such as octanol, lauryl alcohol and myristyl alcohol. Among them, from the viewpoint of easy control of volatility, particularly easy reduction of volatility, the solvent component is preferably an oil or fat (lipophilic solvent) or an alcohol (hydrophilic solvent). In addition, the solvent component is preferably a lipophilic solvent from the viewpoint of difficulty in inhibiting the absorbability. By using the solvent component of the temperature sensitive agent as the lipophilic solvent, the temperature sensitive agent can also serve as the lipophilic solvent for the traditional Chinese medicine material, whereby the sanitary napkin 1 can be made thinner and more flexible, and the wearing feeling can be improved.
The temperature sensitive agent 51 of the liquid-permeable sheet 7 and the temperature sensitive agent 52 on the surface of the absorbent body 11 preferably coexist with a durable hydrophilic oil agent (durable hydrophilizing agent) having a property of being hard to flow out to the lower layer (exemplified: the absorbent body 11 and the lower portion of the absorbent body 11) depending on the type of body fluid and the position to be applied. That is, the solvent component preferably contains a durable hydrophilic oil agent. The durable hydrophilic finish is not particularly limited, and a durable hydrophilic finish coated or kneaded into a fiber can be used in the present technical field. Examples of the durable hydrophilizing agent include alkyl phosphate ester salts having 10 to 30 carbon atoms and betaine compounds having 10 to 30 carbon atoms, mixtures of sulfate ester salts or sulfonate salts, and mixtures of alkyl phosphate ester salts and polyether-modified silicones. Therefore, the temperature sensitive agents 51 and 52 can be prevented from being transferred to the lower layer by the body fluid. That is, the temperature sensitive agent can be maintained relatively close to the skin. This can further improve the persistence of the temperature sensation.
The concentration of the temperature sensitive component in the temperature sensitive agent 50 to 52 is preferably 1 to 50% by mass, more preferably 3 to 30% by mass, and still more preferably 5 to 15% by mass. This is from the viewpoint of the effect of temperature sensing. In the sanitary napkin 1, the weight per unit area of the temperature sensitive component of the temperature sensitive agent 50 to 52 is preferably 0.001g/m2～30g/m2More preferably 0.01g/m2～20g/m2More preferably 0.1g/m2～10g/m2. This is to give a feeling of warmth to the wearer.
When the temperature sensitive agents 50 to 52 contain a heat generating component as a temperature sensitive component, the heat generating component is not particularly limited as long as the heat generating component itself generates heat. Examples of the heat generating component include metal powder such as iron powder (using oxidation heat), acidic substance, alkaline substance (using neutralization heat), and inorganic salt (using hydration heat). When the heat generating component is used, the skin of the wearer can be warmed in a realistic manner when the sanitary napkin 1 is worn, and the wearer can feel the warmth reliably.
The temperature sensitive agents 50, 51, and 52 may be protected by a water-disintegrable protective material, such as microcapsules, in order to prevent volatilization or migration to other areas before the sanitary napkin 1 is used. The functional agent is encapsulated in microcapsules, and collapses when contacted with a liquid (exemplified by menstrual blood, urine, and sweat), and the functional agent is released to the outside. The released functional agent is vaporized by the body temperature of the wearer or the like, or comes into contact with the skin of the wearer, thereby exerting a predetermined function on the wearer.
Examples of the raw material of the microcapsule include: saccharides such as monosaccharides (exemplified by glucose), disaccharides (exemplified by sucrose), and polysaccharides (exemplified by dextrin, glucomannan, sodium alginate, and water-soluble starch); gelatin; and water-soluble polymers (for example, polyvinyl alcohol and polyvinyl acetate).
The microcapsules are publicly available, and examples thereof include INCAP (trademark) publicly available from Symrise corporation. In addition, the microcapsules can be produced, for example, as follows: the raw material of the microcapsule is dissolved in water to form an aqueous solution, and the functional agent and the surfactant are mixed in the aqueous solution, and the mixture is dried under reduced pressure while spraying the aqueous solution.
In the sanitary napkin 1, the temperature sensitive agents 50 to 52 may contain at least one other component having a desired action within a range not to inhibit the effect of imparting a temperature to the wearer in addition to the temperature sensitive component and the solvent component. Examples of the at least one other component include an antibacterial agent, a skin astringent, an anti-inflammatory agent, vitamins, amino acids, zeolite, hyaluronic acid, collagen, vaseline, trehalose, a pH adjuster, a humectant, and a perfume.
The temperature sensitive agent of the sanitary napkin 1 is different from a heat generating agent that generates heat by the agent itself, and is less likely to cause low-temperature burns, and the adhesive portion 72 and the like are less likely to soften, so that when the sanitary napkin 1 is removed from underwear and the like after use, the adhesive portion 72 and the like are less likely to remain in the underwear and 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, and examples thereof include a fabric (exemplified by a nonwoven fabric, a woven fabric, and a knitted fabric), an apertured film, and the like. The fabric is preferably a nonwoven fabric from the viewpoint of ease of production of the sanitary napkin 1. Examples of the nonwoven fabric include pulp air-laid nonwoven fabric, through-air nonwoven fabric, spun-bonded nonwoven fabric, point-bonded nonwoven fabric, spunlace nonwoven fabric, needle-punched nonwoven fabric, melt-blown nonwoven fabric, and a combination thereof (for example, SMS). Among them, as the nonwoven fabric, a through-air nonwoven fabric is preferable. The liquid-permeable sheet 7 preferably has a thickness of 5g/m2～100g/m2More preferably 10g/m2～50g/m2Weight per unit area of (c).
Examples of the fibers constituting the fabric include natural fibers, synthetic fibers, and semi-synthetic fibers. Examples of the natural fibers include pulp fibers and regenerated cellulose fibers. Examples of the regenerated cellulose fibers include rayon fibers. Examples of the semi-synthetic fibers include semi-synthetic cellulose fibers such as acetate fibers. Examples of the synthetic fibers include thermoplastic fibers. Examples of the thermoplastic fibers include fibers formed of polyolefin polymers such as polyethylene and polypropylene, polyester polymers such as polyethylene terephthalate (PET), polybutylene terephthalate, and polybutylene terephthalate, polyamide polymers such as nylon 6 and nylon 6, acrylic polymers, polyacrylonitrile polymers, modified products thereof, or combinations thereof. Examples of the apertured film include apertured films having a plurality of apertured parts formed in a sheet of polyethylene or polypropylene.
The top sheet 7a is preferably made of hydrophilic fibers (for example, cotton, rayon, wool, and silk). This makes it possible to easily introduce and retain moisture containing sweat into the constituent fibers. This makes it possible to prevent moisture from remaining on the surface of the constituent fibers, to prevent moisture from coming into contact with the skin, and to prevent the skin from feeling cold. This can further improve the persistence of the temperature sensation.
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 air warmed by the temperature-sensitive effect of the temperature-sensitive agent 50 to escape from the region between the liquid-impermeable sheet 9 and the skin. Examples of the material of the liquid-impermeable sheet 9 include: synthetic resin films such as polyethylene and polypropylene; a raw material obtained by bonding a synthetic resin film to a nonwoven fabric such as spun-bonded or spun-laced fabric; a multi-layer nonwoven fabric such as SMS, etc., preferably a synthetic resin film having non-air permeability. The liquid-impermeable sheet 9 preferably has a thickness of 10g/m2～50g/m2More preferably 15g/m2～30g/m2Is not only a sheetBit area weight.
In the sanitary napkin 1, examples of the material of the temperature-sensitive agent holding sheet 13 include materials listed as the material of the liquid-permeable sheet 7 and materials capable of being impregnated with the temperature-sensitive agent 50, such as a porous resin sheet like a sponge sheet. Specifically, when the solvent component of the temperature sensing agent 50 is a lipophilic solvent, examples of the solvent component include synthetic fiber fabrics, such as nonwoven fabrics, woven fabrics, and knitted fabrics, and preferred examples thereof include synthetic fiber nonwoven fabrics. When the solvent component of the temperature sensing agent is a hydrophilic solvent, examples thereof include a fabric made of a cellulose fiber, such as a nonwoven fabric, a woven fabric, and a knitted fabric, and preferably include a tissue paper made of a pulp fiber, and a pulp air-laid nonwoven fabric. In another embodiment, when a heat insulating body having a heat insulating function is used instead of the temperature sensitive body 5, examples of the material of the heat insulating sheet instead of the temperature sensitive agent holding sheet 13 include materials listed as the material of the temperature sensitive agent holding sheet 13, and in this case, the temperature sensitive agent 50 is not impregnated.
Examples of the raw material of (the absorbent core of) the absorbent body 11 in the sanitary napkin 1 include pulp fibers and super absorbent polymers. When the absorber 11 has a core-covering layer, the core-covering layer is made of, for example, tissue paper. The weight per unit area of the absorbent body 11 is, for example, 10g/m2～500g/m2Preferably 100g/m2～400g/m2。
In the sanitary napkin 1, examples of the material of the adhesive sections 71, 72, 73 include hot-melt adhesives such as: pressure-sensitive adhesives or heat-sensitive adhesives based on rubber systems such as styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS) or styrene-isoprene-styrene (SIS) or based on olefin systems such as linear low-density polyethylene; and water-sensitive adhesives comprising a water-soluble polymer (e.g., polyvinyl alcohol, carboxymethyl cellulose, gelatin, etc.) or a water-swellable polymer (e.g., 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 inner liner layer from the viewpoint of improving airtightness. Examples of the material of the inner liner include: ethylene-vinyl alcohol copolymers; vinylidene chloride-based polymers such as vinylidene chloride methyl acrylate copolymers; polyvinyl alcohol; nylons, such as nylon 6; aluminum foil; a base material obtained by vapor-plating alumina, silica, or the like on a base film (polyethylene terephthalate or the like).
The absorbent article (exemplified by sanitary napkin) of the present invention is not limited to the above-described embodiments, and the embodiments may be combined with each other and known techniques may be applied thereto without departing from the object and spirit of the present invention.
Description of the reference numerals
1: a sanitary napkin; 7: a liquid-permeable sheet (sheet member); 9: a liquid-impermeable sheet; 11: an absorbent body; 51. 52: a temperature sensing agent; 60: an absorber compressed portion (absorber concave portion); 67: a sheet compression portion (sheet member recess).

Claims (9)

1. An absorbent article having a longitudinal direction, a width direction, and a thickness direction, the absorbent article comprising: an absorbent body; and a sheet member that is overlapped with the absorber in the thickness direction, is positioned closer to the skin side than the absorber, and has liquid permeability,
the absorbent article includes:
a layer of traditional Chinese medicine material, located at least one of the absorber and the sheet member, containing a traditional Chinese medicine material having a water-soluble component and a lipophilic component; and
a solvent layer, located at least one of the absorber and the sheet member, containing an oleophilic solvent,
the part of the traditional Chinese medicine material layer and the part of the solvent layer are overlapped in the thickness direction, or overlapped in the length direction or the width direction.
2. The absorbent article of claim 1,
the solvent layer is located at the skin side of the Chinese medicinal material layer.
3. The absorbent article of claim 2, wherein,
the solvent layer is further positioned on the non-skin side of the traditional Chinese medicine material layer.
4. The absorbent article according to any one of claims 1 to 3, wherein,
the solvent layer is not disposed in the center in the width direction.
5. The absorbent article according to any one of claims 1 to 4, wherein,
the absorbent article further includes a temperature sensitive agent having a temperature sensitive function located in at least one of the absorber and the sheet member.
6. The absorbent article according to any one of claims 1 to 5, wherein,
the absorbent article further includes a temperature-sensitive member containing another temperature-sensitive agent having a temperature-sensitive function, the temperature-sensitive member being located on at least one of the front side and the rear side of the absorbent article in the longitudinal direction with respect to the absorbent body in plan view,
the sheet member extends at least one of the front side and the rear side in the longitudinal direction with respect to the absorbent body in a plan view, overlaps the temperature sensitive member in the thickness direction, and is positioned closer to the skin than the temperature sensitive member.
7. The absorbent article of claim 6,
the absorbent article further includes:
a layer of other traditional Chinese medicine material, located in at least one of the temperature sensitive member and the sheet member, containing other traditional Chinese medicine material having a water-soluble component and a lipophilic component; and
a further solvent layer, located at least one of the temperature-sensitive member and the sheet member, comprising a further lipophilic solvent,
the part of the other traditional Chinese medicine material layer and the part of the other solvent layer are overlapped in the thickness direction, or overlapped in the length direction or the width direction.
8. The absorbent article according to any one of claims 5 to 7, wherein,
the temperature sensing agent comprises:
a temperature-sensitive component for causing a wearer to perceive a temperature sensation; and
a solvent component for dissolving or dispersing the temperature sensitive component,
the solvent component is the lipophilic solvent.
9. The absorbent article according to any one of claims 1 to 8, wherein,
the traditional Chinese medicine material comprises: a crude drug or an extract of the crude drug containing the water-soluble component; and a crude drug having the lipophilic component or an extract of the crude drug.
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CN111818887B (en) 2022-12-20
KR20210134333A (en) 2021-11-09

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