WO2021205751A1 - パンツ型吸収性物品 - Google Patents

パンツ型吸収性物品 Download PDF

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Publication number
WO2021205751A1
WO2021205751A1 PCT/JP2021/005688 JP2021005688W WO2021205751A1 WO 2021205751 A1 WO2021205751 A1 WO 2021205751A1 JP 2021005688 W JP2021005688 W JP 2021005688W WO 2021205751 A1 WO2021205751 A1 WO 2021205751A1
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WO
WIPO (PCT)
Prior art keywords
pants
absorbent
absorbent article
longitudinal direction
type
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2021/005688
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
隆宏 植田
俊幸 谷尾
夏美 大村
綾 横市
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unicharm Corp
Original Assignee
Unicharm Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unicharm Corp filed Critical Unicharm Corp
Priority to CN202190000393.XU priority Critical patent/CN219332233U/zh
Priority to KR1020227033766A priority patent/KR20220163382A/ko
Publication of WO2021205751A1 publication Critical patent/WO2021205751A1/ja
Priority to SA522440814A priority patent/SA522440814B1/ar
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • A61F13/49—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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • 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
    • A61F13/49—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 specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/496—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 specially adapted to be worn around the waist, e.g. diapers, nappies in the form of pants or briefs
    • 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 of the pads
    • 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 of the pads
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • 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
    • A61F13/531—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 having a homogeneous composition through the thickness of the pad
    • A61F13/532—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 having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad

Definitions

  • the present invention relates to a pants-type absorbent article.
  • Absorbent bodies with a liquid-absorbing absorbent core and absorbent articles containing cooling agents, warming agents, fragrances, etc. to reduce discomfort felt by the wearer, etc. are already well known. There is.
  • Patent Document 1 describes a technique for reducing an unpleasant odor derived from excrement by providing a volatile fragrance on the outer surface or inner surface of the waist region of a pants-type absorbent article (pants-type worn article). Is disclosed.
  • Patent Document 2 by arranging a water-disintegrating microcapsule containing a warming agent on the surface sheet of the absorbent article, it is placed on the skin-facing surface side of the absorber at the timing of excretion of body fluid or the like. It is disclosed that the warming agent is diffused through the recessed portion provided, and the discomfort caused by the wearer's feeling of coldness is suppressed without heating the absorber.
  • JP-A-2018-102612 Japanese Unexamined Patent Publication No. 2019-187963
  • a fragrance volatile substance
  • the waist circumference is often composed of a non-woven fabric. Even if a volatile cooling agent is applied, it is not easy to control the air flow of the cooling agent, for example, the cooling agent may escape to the non-skin surface side of the absorbent article. No.
  • a gap is likely to be formed between the underwear and the body, and the warming agent or the cooling sensation agent stimulates the product. It is difficult to control the flow of air, such as controlling the place where the product should be given, and from which part of the product the air containing the warm or cold component is released.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a pants-type absorbent article that controls the air flow and improves the cooling sensation effect. be.
  • the main invention for achieving the above object includes a liquid-absorbing main body having a vertical direction, a horizontal direction, and a front-rear direction intersecting each other, and a waist circumference portion having elasticity in the horizontal direction.
  • a pants-type absorbent article having an exterior body provided so as to cover the non-skin side surface of the absorbent body, and a volatile cooling agent is applied to the absorbent body, and the absorbent body is coated with the absorbent body.
  • Both ends in the longitudinal direction of the main body have at least one main body side end seat portion constituting the absorbent main body and at least one exterior body side seat portion constituting the exterior body when viewed in the front-rear direction.
  • FIG. 4A is a schematic cross-sectional view of the absorbent body 20 along the line AA of FIG.
  • FIG. 4B is a schematic cross-sectional view including the absorbent body 20 and the exterior body 10 along the line BB of FIG.
  • FIG. 5 is a plan view illustrating the arrangement of the cooling sensation agent 26 and the joining region Q for joining the absorbent main body 20 and the exterior body 10.
  • FIG. 5 is a schematic plan view of the pants-type absorbent article 1 in the unfolded and stretched state according to the second embodiment as viewed from the skin side.
  • FIG. 5 is a schematic cross-sectional view taken along the line AA in FIG.
  • FIG. 5 is a schematic plan view of the pants-type absorbent article 1 in the unfolded and stretched state according to the second embodiment as viewed from the non-skin side.
  • It has a vertical direction, a horizontal direction, and a front-rear direction that intersect each other, and has a liquid-absorbing absorbent body and a waistline portion that has elasticity in the horizontal direction so as to cover the non-skin side surface of the absorbent body.
  • It is a pants-type absorbent article having an exterior body provided, and a volatile cooling agent is applied to the absorbent main body, and both ends of the absorbent main body in the longitudinal direction are the front and rear parts. Seen in the direction, it has at least one main body side end seat portion constituting the absorbent main body and at least one outer body side seat portion constituting the exterior body, and extends the waist circumference portion in the left-right direction.
  • a joining region for joining the sheet portions adjacent to each other in the front-rear direction among the main body side end seat portion and the exterior body side seat portion is intermittently provided in the left-right direction. It is a pants-type absorbent article characterized by this.
  • a pants-type absorbent article having an exterior body provided, wherein a volatile cooling agent is applied to the absorbent body, the backsheet has moisture permeability, and the absorbent core is provided. It is a pants-type absorbent article characterized in that it is provided on the non-skin side.
  • the absorbent body portion where the cooling sensation effect is obtained tends to collect moist air, but the breathable back sheet is on the non-skin side of the absorbent core.
  • the accumulated moisture can easily escape from the absorbent main body through the back sheet, and the moisture can be released to the outside in the thickness direction (front-back direction) from the back sheet through the exterior body. Thereby, the cooling sensation effect is improved.
  • the exterior body includes a waist circumference portion, and the waist circumference portion can be expanded and contracted in the left-right direction from both ends in the longitudinal direction of the absorbent body to the outside in the longitudinal direction.
  • the rigidity of the overlapping portion having a plurality of elastic members and where the waistline portion and both ends of the absorbent body overlap in the longitudinal direction when viewed in the front-rear direction, and from both ends of the absorbent body in the longitudinal direction. It is desirable that the rigidity of the overlapping portion is larger than the rigidity of the outer portion in the longitudinal direction.
  • the rigidity of only the waistline portion is smaller, so that the waistline portion only is finer due to the contraction of the elastic member. Wrinkles are likely to form. Since the size of the unevenness (wrinkles) generated by the contraction of the elastic member is in the relationship of "overlapping part between the waistline and the absorbent body"> "only the waistline", a large air flow in the absorbent body. Is formed, and a small air flow can be formed outside both ends in the longitudinal direction to control the air flow including a feeling of coldness. In addition, it is possible to create a flow of air that allows moisture to escape to the upper side in the vertical direction, and the cooling sensation effect is further improved.
  • the exterior body includes a waist circumference portion having a plurality of elastic members that can be expanded and contracted in the left-right direction, and both ends in the longitudinal direction of the absorbent body when viewed in the front-rear direction. It is desirable to have a portion where at least a part of the plurality of elastic members overlaps with each other.
  • the pants-type absorbent article includes a top sheet, an absorbent core, and a back sheet, and both ends of the absorbent body in the longitudinal direction are at least from the top sheet side. It is desirable that the embossed portion formed by embossing toward the back sheet is intermittently provided in the left-right direction.
  • both ends of the absorbent body in the longitudinal direction are more likely to be uneven, and air is more likely to escape.
  • the absorbent body has a central elastic member that can expand and contract in the longitudinal direction of the absorbent body at the central portion of the inseam facing the inseam of the wearer in the left-right direction.
  • the central elastic member overlaps with the cooling agent.
  • the central elastic member contracts in the longitudinal direction, so that the distance between the vaginal opening and the absorbent body coated with the cooling sensitizer becomes closer, so that the absorbent body and the body Is in close contact with the body, making it easier for the cooling agent to come into contact with the body.
  • the length of the central elastic member on the front side in the front-rear direction of the pants-type absorbent article in the vertical direction is shorter than the length of the central elastic member in the vertical direction.
  • the front side (ventral side) is kept flat without shrinking by shortening the central elastic member so as to fit the abdomen, and the rear side (dorsal side) is lengthened.
  • the absorbent body is brought into close contact with the groove on the buttocks.
  • a pants type having a vertically intersecting vertical direction, a horizontal direction, and a front-rear direction, and having a liquid-absorbing absorbent body and an exterior body provided so as to cover the non-skin side surface of the absorbent body.
  • An absorbent article in which a volatile cooling agent is applied to the absorbent body, is provided on both sides of the absorbent body in the left-right direction, and expands and contracts in the longitudinal direction of the absorbent body. It has a leak-proof wall provided with an elastic member, and at both ends in the longitudinal direction of the absorbent body, the leak-proof wall overlaps the absorbent body from the skin side at both sides in the left-right direction.
  • It is a pants-type absorbent article characterized in that the leak-proof wall and the absorbent main body do not overlap at the central portion in the left-right direction.
  • the leak-proof wall hits the thigh in the inguinal region, which makes it difficult for air to escape from the left-right direction and creates a flow of air moving in the longitudinal direction. Since the end portion in the longitudinal direction of the absorbent main body does not overlap the absorbent main body and the leak-proof wall in the central portion in the left-right direction, the air that is about to escape in the longitudinal direction can easily escape from the central portion. The air flow in the buttocks and lower abdomen makes it easier for the wearer to feel the cooling effect.
  • the pants-type absorbent article is such that the cooling sensation agent is applied to at least the central portion in the longitudinal direction of the absorbent body.
  • the wearer can obtain a cooling sensation effect immediately after wearing by applying the cooling sensation agent to the longitudinal central portion facing the portion where the cooling sensation is desired.
  • the vertical dimension of the absorbent body on the front side in the front-rear direction is the size of the absorbent body. It is desirable that it is smaller than the vertical dimension on the rear side in the front-rear direction.
  • the length of the absorbent body on the back side is longer, so that there are many parts where the skin and the absorbent body are in close contact with each other in the sleeping posture, and the volatile cold The sensitizer does not easily escape, making it easier to maintain the cooling effect on the back side.
  • the short anterior side allows air to escape from the ventral side to ensure air permeability.
  • the pants-type absorbent article has a pair of squeezed portions extending along the longitudinal direction of the absorbent body.
  • the pair of pressing portions can press the absorbing main body between the pair of pressing portions against the vaginal opening when a force is applied to the absorbent main body from the left and right directions.
  • the cooling effect can be amplified.
  • the pair of squeezed portions of the pants-type absorbent article are intermittently arranged in the longitudinal direction of the absorbent body.
  • the squeezed portion is continuously arranged in the longitudinal direction, it may be difficult to follow the movement of the wearer. It becomes easy to deform, and it becomes easy for the absorbent body to follow the movement of the body. As a result, it becomes easier to maintain the state in which the absorbent body is pressed against the body, and the cooling sensation effect can be maintained.
  • the absorbent body has a liquid-absorbing absorbent core along the longitudinal direction of the absorbent body, and the thickness of both ends of the absorbent core in the longitudinal direction. Is preferably thinner than the thickness of the longitudinal central region of the absorbent core.
  • the thickness of both ends in the longitudinal direction of the core is thin, a gap with the body is likely to be formed in that portion, and air is likely to flow to the outside in the longitudinal direction.
  • the thin part hits the lower abdomen in the front and the buttocks in the back, and the air flow is created in such a part, so that the cooling sensation effect can be easily felt.
  • the pants-type absorbent article is provided with a middle-high portion thicker than the periphery in the central region of the absorbent core.
  • the rear side in the front-rear direction corresponds to the back side of the wearer
  • the absorbent core is the rear side thicker than the periphery and the rear side thicker than the middle and high parts. It is desirable to have a middle and high part.
  • the rear middle and high part is a portion facing the wearer's buttocks, and the rear middle and high part can improve the fit between the absorbent body and the buttocks. Therefore, leakage can be prevented, and the thickness of the rear middle and high parts makes it less likely that the cold feeling leaks than the surroundings, and the buttocks can also be given a cooling feeling effect.
  • the absorbent body has a liquid-absorbing absorbent core along the longitudinal direction of the absorbent body, and the absorbent core is a basis weight of the absorbent core.
  • the absorbent core has a plurality of low basis weight portions lower than the surroundings, or a plurality of slit portions having a basis weight of the absorbent core of zero, and the plurality of low basis weight portions or the plurality of slit portions have the absorption. It is desirable to extend the sex core along the longitudinal direction and the left-right direction to divide the absorbent core into a plurality of compartments.
  • the bonding length in the left-right direction, which is bonded to the exterior body is the center of the absorbent body in the longitudinal direction. It is desirable that the portion is longer than the bonding length in the left-right direction, which is bonded to the exterior body.
  • the central portion of the absorbent body in the longitudinal direction is the inseam, and the absorbent body is on the skin side in the portion of the crotch where the absorbent body is not attached to the exterior body. It becomes easier to stand up.
  • Absorbency The rise of the main body reduces the escape of air from the left and right directions, making it easier for air to escape to the buttocks and ventral side.
  • the absorbent body has a liquid-absorbing absorbent core, and the absorbent core is provided between both ends in the longitudinal direction in the left-right direction rather than the both ends. It is desirable to have a constricted portion with a narrow width.
  • the narrow portion (constricted portion) in the left-right direction of the absorbent core corresponds to the crotch portion, and the leak-proof wall can easily stand up. It reduces the escape of air in the left-right direction and makes it easier for air to escape to the buttocks and abdomen.
  • the pants-type absorbent article has the absorbent body made of a polymer sheet.
  • the polymer sheet has high absorbency, and the cooling sensation agent acts on the vaginal opening and the like while removing moisture from the vaginal opening and the buttocks, so that the cooling effect can be enhanced. ..
  • the polymer sheet is provided with a pair of polymer-free regions extending in the longitudinal direction of the polymer sheet.
  • Such a pants-type absorbent article having a pair of leg circumference openings, and a curved elastic member along the pair of leg circumference openings in the upper half of the pair of leg circumference openings in the vertical direction. It is desirable to have.
  • the elastic member is arranged along the leg circumference opening, the fit of the leg circumference is improved by following the movement of the body.
  • the curved elastic member reduces the escape of air from the inner and can maintain the cooling sensation effect.
  • a recall display for reminding that the cooling sensation agent is provided can be visually recognized from the outside. It is desirable that it is provided in.
  • the wearer can visually confirm the position where the cooling sensation effect is obtained at the time of wearing.
  • a modifier is applied to the absorbent body, and when viewed in the front-rear direction, the overlapping region where the modifier and the cold sensitizer overlap and the above-mentioned It is desirable to have a non-overlapping region where the modifier and the cooling agent do not overlap.
  • the modifier facilitates drawing menstrual blood into the absorber and also plays a role of forming a film against the volatile cooling sensitizer.
  • the action of the cooling agent can be controlled.
  • by forming a film it becomes difficult for air with a cooling sensation that has emerged from non-overlapping regions and moisture between the absorbent body and the body to enter the absorbent body side, and air (moisture) with the body. It is easy to pull out through the absorbent body.
  • the sheet material constituting the exterior body or the skin-side sheet of the absorbent body that comes into contact with the wearer's skin is preferably a sheet having cotton fibers. ..
  • the presence of cotton fibers that easily contain moisture controls the escape route of air containing a volatile cooling sensation agent, and the seat portion having the cotton fibers exhibits a cooling sensation effect. Increase.
  • the absorbent body has a central portion in the left-right direction and at least the rear side in the front-rear direction of the pants-type absorbent article in the longitudinal direction of the absorbent body. It is desirable that a central squeezed portion that extends and is squeezed from the non-skin surface side is provided.
  • the central squeezed portion protrudes toward the skin so that the absorbent body can be applied to the buttocks, and the distance between the body and the absorbent body is narrowed. It is possible to improve the effect of the cooling agent applied to the sex body.
  • the absorbent body has a liquid-absorbing absorbent core along the longitudinal direction of the absorbent body, and at least in the inseam facing the inseam of the wearer. It is desirable that both sides of the absorbent core in the left-right direction are provided with portions thicker than the surroundings.
  • the cold sensitizer escapes from the width direction because the absorbent core has convex portions (thick parts) on both sides in the width direction (horizontal direction). Can be reduced, the cooling agent can be easily transferred to the lower abdomen and buttocks, and the air flow can be controlled.
  • the pants-type absorbent article 1 provided with the cooling sensation agent 26 described later will be described.
  • the absorbent article 1 for menstruation will be described, but the absorbent article 1 of the present embodiment also includes, for example, diapers for adults and babies, and is used for menstruation. Not limited.
  • FIG. 1 is a schematic perspective view of the pants-type absorbent article 1 according to the first embodiment
  • FIG. 2 is a plan view of the pants-type absorbent article 1 in the unfolded state according to the first embodiment.
  • the absorbent article 1 has a "vertical direction", a “horizontal direction”, and a "front-back direction” that intersect each other.
  • the vertical direction of the paper surface in FIG. 1 is the vertical direction
  • the upper side (lower side) of the paper surface is the vertical "upper” ("lower")
  • the left side (right side) of the paper surface is the left side in the left-right direction. (Right).
  • the side that is the ventral side of the wearer when wearing is referred to as the "front side”
  • the side that is the back side of the wearer is referred to as the "rear side”.
  • the absorbent articles 1 are said to intersect each other in the "longitudinal direction”. It has a "left-right direction (width direction)" and a "thickness direction”. Then, the vertical direction of the paper surface in FIG. 2 is the longitudinal direction, the upper side (lower side) of the paper surface is the longitudinal "front (ventral side)" ("rear (dorsal side)"), and the longitudinal direction is orthogonal to the paper surface.
  • the width direction is the width direction, and the left side (right side) of the paper is the left side (right side) in the width direction.
  • the direction orthogonal to the longitudinal direction and the width direction (horizontal direction) is the thickness direction, and in the thickness direction, the side that comes into contact with the wearer's skin is the “skin side” and vice versa.
  • the side is called the "non-skin side”.
  • the plan view (for example, FIG. 2) according to the present embodiment shows the stretched state of the object.
  • the "stretched state” is shown in a plan view by stretching each elastic body (for example, inseam thread rubber 30, elastic sheet 12 (corresponding to elastic film), etc.) included in the absorbent article 1. It is a state in which the member is stretched without wrinkles.
  • FIG. 2 it means a state in which the dimensions of the exterior body 10 and the absorbent main body 20, which will be described later, constitute the absorbent article 1 are extended until they match or are close to the dimensions of the member alone.
  • the state in which each elastic body naturally contracts and wrinkles or the like are formed on the members or the like shown in the plan view in the non-extended state is referred to as a "natural state".
  • the absorbent article 1 includes an exterior body 10 and a liquid-absorbing absorbent main body 20.
  • a process of forming the absorbent article 1 into a pants shape will be described first. ..
  • the absorbent body 20 will be described later with a section.
  • the exterior body 10 has a substantially hourglass shape in a plan view in the unfolded state. That is, the central portion in the longitudinal direction is recessed inward in the width direction, and this recessed portion forms a pair of leg circumference openings 1b shown in FIG. 1 when formed into a pants shape.
  • the exterior body 10 is located on the front side of the center line CL located at the center of the absorbent article 1 in the longitudinal direction and is applied to the ventral side of the wearer. It has a rear exterior body 10b (corresponding to the dorsal waistline) that is on the side and is applied to the back side of the wearer.
  • the front exterior body 10f (rear exterior body 10b) is provided at the front end (rear side) end portion along the width direction at the waist circumference front end portion 10ff (girth circumference rear end portion 10bf) and at both left and right ends. It has an anterior joint portion 10fe (rear joint portion 10be) along the longitudinal direction (both are diagonally downward-sloping portions in the plan view of FIG. 2).
  • the exterior body 10 according to the first embodiment is laminated on a non-stretchable sheet 14 having the shape of the exterior body 10 and having almost no elasticity in the left-right direction and a part of the skin side surface of the non-stretchable sheet 14.
  • An elastic sheet 12 having elasticity in the left-right direction front elastic sheet 12f and rear elastic sheet 12b
  • a part of the non-stretchable sheet 14 extends outward from the outer end 20et of the absorbent body 20 in the longitudinal direction (vertical direction), and is inside and in the thickness direction in the longitudinal direction at a predetermined position 10et in the longitudinal direction.
  • the portion where the non-stretchable sheet 14 is folded back is also referred to as a folded-back portion 15, and the predetermined position 10et where the non-stretchable sheet 14 is folded back is also referred to as an upper end 10et of the exterior body 10.
  • the folded-back portion 15 may be a sheet member different from the non-stretchable sheet 14. That is, the folded-back portion 15 is not formed by folding back the non-stretchable sheet 14 at the upper end 10et, but may be formed by a sheet member such as a non-woven fabric that is separate from the non-stretchable sheet 14.
  • the absorbent article 1 has elasticity in the left-right direction due to the stretchable sheet 12, in a natural state, the surfaces of the folded-back portion 15 and the non-stretchable sheet 14 have wrinkles along the vertical direction. It is formed.
  • the outer body 10 in the unfolded state is arranged so as to cover the non-skin side surface of the absorbent main body 20 in the thickness direction, and the absorbent article in the unfolded state is formed.
  • Generate 1 That is, the non-skin side surface of the absorbent main body 20 is used as a joint surface, and the joint surface is placed at a predetermined position on the unfolded exterior body 10 to be joined.
  • the absorbent main body 20 and the exterior body 10 in the unfolded state are bent in the longitudinal direction. That is, the absorbent body 20 and the exterior body are so that the skin side of the front exterior body 10f and the skin side of the rear exterior body 10b face each other with the center line CL in the longitudinal direction shown in FIG. 2 as a crease. 10 is bent in the longitudinal direction.
  • the waist circumference front end portion 10ff and the waist circumference rear end portion 10bf of the exterior body 10 form the waist circumference opening 1a on the upper side of the exterior body 10.
  • the pants-type absorbent article 1 has a configuration in which the exterior body 10 comes into contact with the wearer's waistline and does not fall when worn, mainly due to expansion and contraction of the exterior body 10 in the left-right direction (tightening to the body). Therefore, the absorbent body 20 joined to the exterior body 10 is the lower part of the wearer's crotch (the part where the absorbent body 20 comes into contact with the wearer's skin when worn, and the buttocks (buttocks) from the lower abdomen via the crotch part. ) Is in contact with the sacral portion) and is supported in the vertical direction by the exterior body 10.
  • the absorbent article 1 is a pants type having an abdomen, a back portion, and a crotch portion, and a waist circumference opening 1a and a pair of leg circumference openings 1b are formed, and the elastic sheet 12 included in the exterior body 10. It is supported so that it will not fall when worn.
  • contact means that the member is in contact with the wearer, and if at least a part of the member is in contact with the wearer, the member is in contact with the wearer.
  • a state in which the stretchable portion of the exterior body 10 is in contact with the wearer and the non-stretchable portion is not in contact with the wearer is a state in which the exterior body 10 is in contact with the wearer.
  • a known joining method such as an adhesive, a heat seal, an ultrasonic seal, or a combination thereof can be exemplified.
  • a post-treatment tape 60 is provided on the non-skin side surface of the exterior body 10.
  • the post-treatment tape 60 is a substantially rectangular tape-shaped member (tape member) that is long in the vertical direction, and one side in the vertical direction (longitudinal direction) is fixed to the exterior body 10 in the vertical direction (longitudinal direction). It has an adhesive portion on the other side. An adhesive is applied to the adhesive portion, and before the use of the absorbent article 1, a part of the post-treatment tape 60 is folded with the adhesive portion inside so that the adhesive portion is not exposed to the outside. To protect the adhesive surface.
  • the folded post-treatment tape 60 is stretched and pulled with respect to the absorbent article 1 rolled vertically so that the absorbent body 20 is inside.
  • the adhesive portion is exposed, and the adhesive portion side is wound around the absorbent article 1.
  • the absorbent article 1 can be held in a rolled state, and the absorbent article 1 is discarded without leaking excrement or the like adhering to the inside of the absorbent article 1 (absorbent body 20) to the outside. can do.
  • FIG. 3 is a plan view of the absorbent body 20
  • FIG. 4A is a schematic cross-sectional view of the absorbent body 20 along the line AA of FIG. 3
  • FIG. 4B is a line BB of FIG. It is a cross-sectional schematic view which includes the absorbent body 20 and the exterior body 10 along the above.
  • FIG. 4B is a cross-sectional view including the exterior body 10 in order to make it easy to understand the joint state between the absorbent main body 20 and the exterior body 10.
  • the absorbent core 22 is formed by molding a liquid absorbent material into a predetermined shape.
  • the absorbent core 22 has a substantially rectangular shape in a plan view (FIG. 2) and a convex central portion in the longitudinal direction in a cross-sectional view. It is formed into a portion shape (middle and high portion 22na shown in FIG. 4B, which will be described later).
  • the liquid-absorbent material include those in which a liquid-absorbent fiber such as pulp fiber contains a highly absorbent polymer (so-called SAP) or the like.
  • SAP highly absorbent polymer
  • the outer peripheral surface of the absorbent core 22 may be covered with a liquid-permeable sheet member (core wrap sheet 22a) such as tissue paper or non-woven fabric.
  • the top sheet 24 is a liquid-permeable sheet member that can come into contact with the wearer's skin when worn, and is formed of, for example, a hydrophilic air-through non-woven fabric or a spunbonded non-woven fabric. Further, the top sheet 24 may have a configuration of two or more layers. For example, a second sheet (not shown in FIG. 4A), which is a sheet member having substantially the same function and configuration as the top sheet 24, may be provided on the non-skin side of the top sheet 24.
  • the back sheet 25 is a liquid-impermeable and moisture-permeable sheet 25a for suppressing the leakage of excretory liquid such as menstrual blood absorbed by the absorbent core 22 to the outside, and the back sheet 25 on the non-skin side of the sheet 25a. It is formed in a two-layer structure including an arranged liquid-permeable sheet 25b.
  • a resin film such as a polyethylene film or a polypropylene film is used
  • the liquid-permeable sheet 25b for example, a flexible non-woven fabric or the like is used.
  • the size of the top sheet 24 and the size of the back sheet 25 are both sizes that cover the entire absorbent core 22.
  • the absorbent body 20 provided with the cooling sensation agent 26, which will be described later, is a portion where moist air tends to accumulate, but the back sheet 25 includes a moisture-permeable sheet 25a, and the back sheet 25 is provided.
  • the accumulated moisture escapes from the absorbent main body 20 through the back sheet 25, and further passes through the exterior body 10 to release the moisture in the thickness direction (front-back direction). It will be easier to escape to the outside. Thereby, the cooling sensation effect of the cooling sensation agent 26 can be improved.
  • the liquid permeable sheet 25b has an extending portion 25c extending to the outside of both ends 20es of the absorbent main body 20 in the width direction.
  • the extending portion 25c is bent toward the skin in the thickness direction with the fulcrum 50B as the starting point at both ends 20es in the width direction of the absorbent body 20, and is non-skinned at the apex 50S located on the skin side of the top sheet 24.
  • a three-dimensional gather 50 is formed (see FIG. 4A).
  • a three-dimensional gather elastic member 51 such as a rubber thread along the longitudinal direction of the absorbent body 20 is arranged at the apex 50S of the three-dimensional gather 50 in a state of being extended in the longitudinal direction.
  • the elasticity of the gathered elastic member 51 causes the apex 50S to stand up on the wearer's skin side.
  • the three-dimensional gather 50 functions as a leak-proof wall for suppressing lateral leakage of excrement and the like.
  • an inseam thread rubber 30 (hereinafter, also referred to as a central elastic member 30) that can be expanded and contracted in the longitudinal direction is provided between the liquid permeable sheet 25a and the liquid permeable sheet 25b in the thickness direction.
  • the inseam thread rubber 30 is located at the center of the absorbent body 20 in the left-right direction (width direction) from the front side where the lower abdomen abuts to the rear side where the buttocks abut through the crotch part. It is provided up to.
  • a plurality of squeezed portions 40 extending along the longitudinal direction of the absorbent body 20 are formed.
  • the squeezing portion 40 is provided so that when the wearer wears the absorbent article 1, the absorbent main body 20 is deformed along the wearer's body (so as to be a crease of deformation), and FIG. 4A.
  • the skin side of the absorbent body 20 (absorbent core 22) has a concave shape recessed from the skin side to the non-skin side.
  • the concave shape of the squeezed portion 40 is formed by, for example, squeezing the absorbent body 20 (absorbent core 22) from the skin side, and the density of the absorbent core 22 is higher than the density around the high density portion. It is a squeeze groove.
  • a volatile cooling sensation agent 26 is provided between the top sheet 24 in the thickness direction and the absorbent core 22, and in the first embodiment, the top sheet 24 It is applied to the non-skin side.
  • the cooling sensation agent 26 is continuous from the front end to the rear end in the longitudinal direction of the absorbent main body 20 at a predetermined interval in the width direction (short direction) of the absorbent main body 20. It is applied to a plurality of cooling agent application regions 26p (portions indicated by hatching) along the longitudinal direction. Therefore, a non-applied region 26n in which the cooling sensation agent 26 is not applied along the longitudinal direction is provided between the cooling sensation agent coating regions 26p adjacent to each other in the width direction of the absorbent body 20.
  • the above-mentioned cooling sensation agent 26 is a volatile substance, and for example, one that acts on the receptor activation channel (TRPM8) in the nerve of the skin is preferable.
  • Such cooling agents include, for example, menthol (eg, l-menthol) and derivatives thereof (eg, menthyl lactate), methyl salicylate, camphor, cucumber extract, essential oils derived from plants (eg, mint, eucalyptus, nutmeg). And so on.
  • the cooling sensation agent may be one that lowers the ambient temperature by the heat of vaporization. Examples of such a cooling sensitizer include alcohols such as methanol and ethanol.
  • cooling sensation agent is directly applied to the material constituting the absorbent article 1 because the cooling sensation effect does not occur when the water such as blood does not come into direct contact with the microcapsules to the extent that the microcapsules are disintegrated. ing.
  • the cooling sensation agent application region 26P of the cooling sensation agent 26 is not limited to the above-mentioned position, and the cooling sensation agent 26 may be applied to at least the central portion of the absorbent body 20 in the longitudinal direction.
  • the central part in the longitudinal direction is a position facing the excretion port such as the vaginal opening, and the wearer can apply the cooling sensitizer 26 to the central part in the longitudinal direction facing the part to be given a cooling sensation. , You can get a cooling effect immediately after wearing.
  • FIG. 5 is a plan view illustrating the arrangement of the cooling sensation agent 26 and the joining region Q for joining the absorbent main body 20 and the exterior body 10.
  • a joining region Q Qa in which an adhesive such as a hot melt adhesive is applied in an ⁇ shape is applied.
  • FIG. 5 shows a state in which the absorbent main body 20 having the joint region Qa intermittently provided in the left-right direction is arranged on the exterior body 10.
  • both end portions 20e are regions where the absorbent core 22 does not exist, and the thickness direction When viewed (in the front-rear direction when worn), a joint region Qa is arranged between the back sheet 25 (liquid permeable sheet 25b) constituting the absorbent body 20 and the elastic sheet 12 constituting the exterior body 10. There is.
  • the back sheet 25 (liquid permeable sheet 25b) and the stretchable sheet 12 are adjacent to each other in the thickness direction at both end portions 20e, and the back sheet 25 and the stretchable sheet 12 are so adjacent to each other in the thickness direction.
  • a joining region Qa for joining each other is intermittently provided in the left-right direction (see FIGS. 3 and 5).
  • the adhesive coating pattern is limited to the above-mentioned ⁇ shape, and any coating pattern such as a spiral shape or a stripe shape can be applied.
  • the cooling sensation agent 26 is applied to both ends 20e of the absorbent body 20 in the longitudinal direction to obtain a cooling sensation effect, and the both ends 20e are joined to the exterior body 10.
  • a difference in rigidity is generated in the left-right direction. That is, the joined region Q has a higher rigidity than the unjoined region, and the unjoined region (Qn) has a lower rigidity.
  • the front exterior body 10f rear exterior body 10b
  • the absorbent main body 20 absorbs menstrual blood and the like, moist air tends to accumulate, and if such moist air accumulates excessively, the cooling sensation effect tends to be impaired.
  • the vicinity of the vaginal opening gives a cooling sensation effect by bringing the absorbent body 20 into close contact with the vaginal opening, and allows such moist air to escape from between the uneven wrinkles formed on both ends 20e, thereby giving a cooling sensation effect. Can be improved.
  • both ends 20e in the longitudinal direction of the absorbent body 20 are the at least one body side end sheet portion constituting the absorbent body 20 and the exterior body 10 when viewed in the thickness direction (front-back direction when worn). It has at least one exterior body side seat portion constituting the above.
  • the main body side end sheet portion is seen in the thickness direction of each of the liquid permeable and moisture permeable sheet 25a and the top sheet 24.
  • the portion overlapping the both end portions 20e corresponds to this.
  • the exterior body side seat portion corresponds to a portion of the non-stretchable sheet 14 that overlaps both end portions 20e in the thickness direction.
  • FIG. 6 is a diagram illustrating a joining region Qb for joining the top sheet 24, the absorbent core 22, and the back sheet 25 (sheet 25a) of the absorbent body 20.
  • the cross-sectional view (right view) of FIG. 6 is a cross-sectional view taken along the line BB of the plan view (left view) of FIG.
  • the absorbent body 20 Before joining the absorbent body 20 to the exterior body 10, the absorbent body 20 is formed with the absorbent core 22 sandwiched between the top sheet 24 and the back sheet 25.
  • a bonding region Q (Qb) is provided on the non-skin side surface of the top sheet 24 by applying an adhesive such as a hot melt adhesive in an ⁇ shape.
  • the joint region Q (Qb) is intermittently provided along the longitudinal direction of the absorbent main body 20 with a predetermined interval Qn in the left-right direction (width direction). As shown in the cross-sectional view of FIG. 6, the top sheet 24 and the absorbent core 22 adjacent to each other in the thickness direction are joined by the joining region Qb.
  • both ends 20e in the longitudinal direction of the absorbent body 20 are regions where the absorbent core 22 does not exist, and in the present embodiment, the top sheet 24 and the back sheet 25 adjacent to each other in the thickness direction in the region. (Sheet 25a) is joined by the joining region Qb. Since the joint region Qb is intermittently provided in the left-right direction also at both end portions 20e, a difference in rigidity occurs between both end portions 20e in the left-right direction. That is, similarly to the joint region Qa, the joint region Qb has a higher rigidity than the non-joined region (Qn), and the non-joined region (Qn) has a lower rigidity than that. ..
  • the elastic front exterior body 10f (rear exterior body 10b) naturally contracts in the left-right direction. Due to the difference in rigidity, uneven wrinkles are likely to occur on both ends 20e of the absorbent body 20. Moist air is easily released from the wrinkles of the unevenness, and the effect of the cooling sensation agent 26 applied to the absorbent main body 20 is improved.
  • Example 1 an absorbent article in which a bonding region Q (Qb) between the top sheet 24 and the back sheet 25 is intermittently provided in the width direction (left-right direction) by applying an adhesive in an ⁇ -shaped coating pattern. It is 1. Further, Comparative Example 1 is an absorbent article 1 in which a bonding region Q between the top sheet 24 and the back sheet 25 is continuously provided in the width direction (left-right direction) by applying an adhesive using a coater. ..
  • the bonding region Q (Qa) between the exterior body 10 and the absorbent main body 20 is intermittently provided in the width direction (left-right direction) by applying the adhesive in an ⁇ -shaped coating pattern. It is an absorbent article 1.
  • Comparative Example 2 is an absorbent article 1 in which a bonding region Q between the exterior body 10 and the absorbent main body 20 is continuously provided in the width direction (left-right direction) by applying an adhesive using a coater. In all the absorbent articles 1, the cooling sensation agent is uniformly applied to the non-skin side surface of the top sheet 24 of the absorbent body 20.
  • Each absorbent article 1 was used by 10 subjects, and the evaluation of coolness from the lower abdomen to the vaginal opening and from the vaginal opening to the buttocks one hour after wearing was evaluated by the following five-grade score evaluation. , The average score was calculated. 5: Very cold 4: Quite cold 3: Moderately cold 2: Slightly cold 1: I don't feel
  • the average score of Example 1 was 3.8, which was better than the average score of 2.9 of Comparative Example 1.
  • the average score of Example 2 was 3.8, which was better than the average score of 3.2 of Comparative Example 2.
  • the user feels colder when the joint region Q (Qa) between the exterior body 10 and the absorbent body 20 is intermittently provided in the width direction.
  • the cooling sensitizer is provided by intermittently providing a joining region for joining the sheets adjacent to each other in the thickness direction at both ends 20e in the longitudinal direction of the absorbent body 20 of the absorbent article 1 in the left-right direction.
  • the cooling effect of 26 can be improved.
  • both end portions 20e of the absorbent main body 20 in the longitudinal direction are embossed portions 31 formed by embossing at least from the top sheet 24 side toward the back sheet 25 in the left-right direction. Has intermittently.
  • embossing both ends 20e of the absorbent main body 20 in the longitudinal direction are more likely to have irregularities, and air is more likely to escape from the irregularities.
  • the volatilized cooling sensation agent moves through the unevenness in the vertical direction, making it easier for the wearer to feel the cooling sensation effect.
  • the absorbent main body 20 is formed in the longitudinal direction at the central portion of the inseam facing the inseam of the wearer in the left-right direction. It has a stretchable central elastic member 30 (inseam thread rubber 30), and the central elastic member 30 overlaps with the cooling agent application region 26p when viewed in the thickness direction. As each central elastic member 30 contracts in the longitudinal direction, the distance between the vaginal opening and the absorbent body 20 to which the cooling sensitizer 26 is applied becomes closer, so that the absorbent body 20 and the body come into close contact with each other and the cooling sensitizer 26. The application area 26p becomes easy to come into contact with the body.
  • all of the central elastic member 30 overlaps with the cooling agent application region 26p, but the present invention is not limited to this, and at least a part of the central elastic member may overlap.
  • the front side in the longitudinal direction of the absorbent article 1 when viewed with reference to the center line CL located at the center of the absorbent article 1 in the longitudinal direction, the front side in the longitudinal direction of the absorbent article 1 (so-called the front-rear direction when folded in half at the center line CL).
  • the length L1 in the longitudinal direction (vertical direction) of the central elastic member 30 in the front side) is the center in the longitudinal direction of the absorbent article 1 (so-called rear side in the front-rear direction when folded in half at the center line CL).
  • the length of the elastic member 30 in the longitudinal direction (vertical direction) is shorter than the length L2 (L1 ⁇ L2).
  • the ventral side which is the front side
  • the absorbent main body 20 can be brought into close contact with the groove of the buttocks by lengthening the central elastic member 30.
  • the absorbent article 1 according to the first embodiment is provided with three-dimensional gathers (leakage-proof walls) 50 on both left and right sides of the absorbent main body 20 in the left-right direction. Then, at both end portions 20e in the longitudinal direction of the absorbent main body 20, the three-dimensional gathers 50 overlap the absorbent main body 20 from the skin side on both side portions in the left-right direction, and the three-dimensional gathers 50 are formed in the central portion in the left-right direction. It does not overlap with the absorbent body 20. In the inguinal region of the wearer, the three-dimensional gathers 50 hit the thighs to make it difficult for air to escape from the left-right direction and create a flow of air moving in the longitudinal direction.
  • the absorbent body 20 and the three-dimensional gather 50 do not overlap at the center in the left-right direction, the air that is about to escape in the longitudinal direction is left and right of the end 20e. It becomes easy to come out from the central part of the direction. Air flows from the central part to the wearer's lower abdomen if it is on the front side, and to the wearer's buttocks if it is on the posterior side, so that air containing a volatile cooling agent reaches the lower abdomen and buttocks. The wearer is more likely to feel the cooling effect.
  • the absorbent article 1 according to the first embodiment is in the longitudinal direction of the absorbent main body 20 with reference to the center line CL located at the center in the longitudinal direction of the absorbent article 1.
  • the dimension L3 in the longitudinal direction (vertical direction) on the front side (front side in the front-rear direction when worn) is the longitudinal direction (vertical direction) on the rear side (rear side in the front-rear direction when worn) of the absorbent body 20 in the longitudinal direction. It is smaller (shorter) than the dimension L4 (L3 ⁇ L4).
  • the size (L4) of the absorbent body 20 on the back side is longer, there are many parts where the skin and the absorbent body 20 are in close contact with each other when the wearer is in a sleeping position, and the volatilized cooling sensitizer escapes. It is difficult to maintain the cooling effect on the back side. On the contrary, since the dimension (L3) of the absorbent main body 20 on the front side (ventral side) is short, air is released from the ventral side to ensure air permeability.
  • the absorbent core 22 of the absorbent main body 20 is also viewed in the longitudinal direction (up and down) on the front side of the absorbent core 22 in the longitudinal direction with reference to the center line CL located at the center in the longitudinal direction of the absorbent article 1.
  • the dimension L5 in the direction) is smaller than the dimension L6 in the longitudinal direction (vertical direction) on the rear side in the longitudinal direction of the absorbent core 22 (L5 ⁇ L6).
  • the absorbent main body 20 is provided with at least a pair of squeezed portions 40, and the at least pair of squeezed portions 40 makes the absorbent main body 20 easily deformed. .. Specifically, when a force is applied to the absorbent main body 20 from the left-right direction, the absorbent main body 20 between the pair of pressing portions 40 is easily bent toward the body side and can be pressed against the vaginal opening. As a result, the absorbent body 20 comes into close contact with the body, and the cooling effect of the cooling agent 26 provided on the absorbing body 20 can be amplified.
  • the pair of pressing portions 40 are intermittently arranged in the longitudinal direction of the absorbent main body 20. If the squeezing portion 40 is continuously arranged in the longitudinal direction, the absorbent main body 20 is likely to be deformed, but it may be difficult to follow the movement of the wearer's foot. However, by arranging the squeezing portion 40 intermittently in the longitudinal direction, the absorbent main body 20 is likely to be partially deformed, and the absorbent main body 20 is likely to follow the movement of the wearer's foot. As a result, it becomes easier to maintain the state in which the absorbent body 20 is pressed against the vaginal opening, and the cooling sensation effect can be maintained.
  • the thickness of both ends 22e in the longitudinal direction of the absorbent core 22 becomes thinner toward both ends (front end, rear end) in the longitudinal direction. That is, the thickness of both end portions 22e is thinner than the thickness inside the both end portions 22e in the longitudinal direction (for example, the thickness D1 in the cross-sectional view of FIG. 6), and in the central region of the absorbent core 22 in the longitudinal direction. It is thinner than the thickness (D2) of a certain middle and high portion 22na. Since the thickness of both ends 22e of the absorbent core 22 in the longitudinal direction is thin, a gap with the body is likely to be formed in that portion, and air is likely to flow to the outside in the longitudinal direction. Further, both end portions 22e face the lower abdomen of the wearer on the front side and the buttocks on the rear side, and the air flow is formed in such a portion, so that the wearer can easily feel the vaporized cold sensitizer component. ..
  • a middle-high portion 22na thicker than the periphery is provided in the central region which is the central portion in the longitudinal direction of the absorbent core 22.
  • the central region of the absorbent core 22 in the longitudinal direction is a portion facing the vaginal opening, and the thickness of the absorbent core 22 in the region makes the cooling sensation less likely to leak than the surroundings.
  • the middle-high portion 22na may be provided at least in the central portion in the left-right direction of the absorbent core 22, and since the middle-high portion 22na and the body are easily in close contact with each other, the air collected in the absorbent main body 20 is thicker than the middle-high portion 22na.
  • the absorbent core having such a middle-high portion 22na is not limited to the single-layer structure as in the present embodiment, and includes an upper layer core and a lower layer core arranged on the non-skin side in the thickness direction of the upper layer core. It may have a two-layer structure.
  • FIG. 7 is a cross-sectional view showing a modified example of the absorbent core 22 according to the first embodiment.
  • the absorbent core 22 may have a rear middle-high portion 22ka thicker than the periphery on the rear side (dorsal side) of the middle-high portion 22na in the longitudinal direction. ..
  • the rear middle-high portion 22ka is a portion facing the wearer's buttocks, and the rear middle-high portion 22ka can improve the fit between the absorbent body 20 and the buttocks.
  • the thickness of the rear middle and high portion 22 ka makes it more difficult for the cooling sensation effect to escape than the surroundings, and the cooling sensation effect of the buttocks can be maintained.
  • FIG. 8 is a diagram showing another modification of the absorbent core 22 according to the first embodiment.
  • the absorbent core 22 of the absorbent main body 20 in the modified example of FIG. 8 has a plurality of low basis weight portions 55 having a basis weight of the absorbent core 22 lower than that of the surroundings.
  • the low basis weight portion 55 may be a slit portion 55 in which the basis weight of the absorbent core 22 is zero.
  • the plurality of low basis weight portions 55 (or the plurality of slit portions 55) extend along the longitudinal direction and the left-right direction of the absorbent core 22, and divide the absorbent core 22 into a plurality of compartments 56. ..
  • the cooling sensation agent 26 is applied so as to overlap with at least a part of the plurality of low basis weight portions 55 (slit portions 55) in the thickness direction.
  • the low basis weight portion 55 is not provided on the front side of the absorbent core 22 in the longitudinal direction, but the present invention is not limited to this, and the low basis weight portion 55 is partially provided at an arbitrary position of the absorbent core 22. Also, it may be provided on the entire surface.
  • the absorbent cores 22 can be deformed along only the compartments (56) required for the movement of the wearer, and follow the movement of the body. It becomes easier to do.
  • an air flow is generated at the time of deformation, and a cooling sensation effect is likely to be exhibited. Twice
  • the cooling agent application region 26p (the portion indicated by hatching) to which the cooling agent 26 is applied is provided so as to straddle the low basis weight portion 55 (or the slit portion 55) extending in the left-right direction. Is preferable.
  • the cooling sensitizer 26 can easily continuously stimulate the receptor activation channel (TRPM8) of the wearer's skin in accordance with the deformation of the absorbent body 20 that follows the movement of the wearer's body, and the cooling agent 26 becomes cold. The effect of the sensitizer 26 can be improved.
  • the absorbent main body 20 is provided with a central elastic member 30, and the central elastic member 30 contracts in the low basis weight portion 55 (or slit portion 55) having low rigidity to fit to the perineal portion and the buttocks.
  • the property is improved, and the cooling effect can be further enhanced.
  • the bonding length W1 is greater than the length in the left-right direction (referred to as the bonding length W2) in which the central portion of the absorbent body 20 in the longitudinal direction and the exterior body 10 are bonded. Is also longer (W1> W2).
  • the central portion of the absorbent body 20 in the longitudinal direction faces the wearer's inseam, and a portion of the absorbent body 20 in which the absorbent body 20 is not attached to the exterior body 10 is formed in the crotch.
  • the part that is not pasted together tends to stand up on the skin side.
  • the rise of the absorbent body 20 reduces the escape of air from the left and right directions, forms an air flow in the longitudinal direction, and facilitates the movement of air to the buttocks and abdomen of the wearer.
  • the length in the left-right direction (referred to as W3) in the center in the longitudinal direction of the product is longer than the length in the left-right direction of the absorbent main body 20, but the length of the product.
  • the length W3 of the exterior body 10 may be shorter than the length of the absorbent body 20 in the left-right direction.
  • the absorbent core 22 made of a liquid absorbent material is covered with a core wrap sheet 22a, and the absorbent core 22 is further covered with a top sheet 24 and a back sheet 25.
  • the structure is not limited to this, and the absorbent main body 20 may be composed of a polymer sheet in which SAP (super absorbent polymer) is sandwiched between two sheets such as a non-woven fabric.
  • SAP super absorbent polymer
  • the highly absorbent polymer sheet positively removes moisture generated in the vicinity of the vaginal opening and the buttocks due to walking or exercise to reduce stuffiness, thereby enhancing the cooling effect of the cooling sensitizer 26.
  • the above-mentioned polymer sheet may be provided with a pair of polymer non-existent regions in which SAP does not exist, which extends in the longitudinal direction of the polymer sheet. Since the polymer sheet has a difference in rigidity depending on the region where the superabsorbent polymer is present and the region where the superabsorbent polymer is not present, the polymer non-existing region having low rigidity is deformed according to the movement of the body, so that the fit of the absorbent body 20 is achieved. Is improved.
  • the outer body 10 does not have the elastic sheet 12, and the elastic member (mainly, the elastic member (skin side sheet 11 and the non-skin side sheet 14) described later) is formed between two sheets (skin side sheet 11 and non-skin side sheet 14) made of a non-woven fabric or the like. It differs from the first embodiment in that it has a ventral elastic member 13a, a dorsal elastic member 13b, a ventral leg circumference elastic member 16a, a dorsal leg circumference elastic member 16b, etc., which will be described later.
  • the parts different from the first embodiment will be mainly described. Further, the same parts as those in the first embodiment are assigned the same numbers, and the parts not particularly described are the same as those in the first embodiment.
  • FIG. 9 is a schematic perspective view of the pants-type absorbent article 1 according to the second embodiment.
  • FIG. 10 is a schematic plan view of the pants-type absorbent article 1 in the unfolded and stretched state according to the second embodiment as viewed from the skin side.
  • FIG. 11 is a schematic cross-sectional view taken along the line AA in FIG.
  • the exterior body 10 of the absorbent article 1 according to the second embodiment has a ventral waist circumference portion 10f, a dorsal waist circumference portion 10b, and a crotch lower portion 10m in the longitudinal direction.
  • the ventral girth portion 10f is a part of the front exterior body 10f of the first embodiment
  • the dorsal girth portion 10b is a part of the posterior girth portion 10b of the first embodiment
  • the ventral girth portion 10f is provided between the back side waist circumference portion 10b and the back side waist circumference portion 10b.
  • the exterior body 10 has a skin-side sheet 11 and a non-skin-side sheet 14 arranged on the non-skin-side side of the skin-side sheet 11.
  • the skin-side sheet 11 and the non-skin-side sheet 14 can be formed of, for example, a spunbonded non-woven fabric, an SMS non-woven fabric (spunbond, meltblown, spunbonded non-woven fabric) or the like.
  • the outer end (upper end) of the non-skin side sheet 14 in the longitudinal direction is folded back toward the skin side. The folded portion of the non-skin side sheet 14 wraps one end (outer end) of the skin side sheet 11 in the longitudinal direction.
  • the outer end (upper end) of the non-skin side sheet 14 in the longitudinal direction may not be folded back.
  • the exterior body 10 has a recessed portion 10c in which the central portion in the longitudinal direction is recessed inward in the left-right direction at the lower crotch portion 10 m.
  • the ventral waist circumference portion 10f (dorsal waist circumference portion 10b) of the exterior body 10 has a plurality of ventral elastic members 13a (dorsal elastic members 13b) such as rubber threads that can be expanded and contracted in the left-right direction. However, they are provided side by side in the vertical direction.
  • the ventral and dorsal elastic members 13a and 13b are provided so as to be sandwiched between the skin side sheet 11 and the non-skin side sheet 14 in a state of being extended in the left-right direction, respectively, and the ventral and dorsal elastic members 13a and 13b are provided.
  • 13a and 13b impart elasticity in the left-right direction to the ventral waist circumference portion 10f and the dorsal waist circumference portion 10b.
  • the exterior body 10 is provided with a plurality of ventral leg circumference elastic members 16a and a plurality of dorsal leg circumference elastic members 16b between the skin side sheet 11 and the non-skin side sheet 14. At least a part of the ventral and dorsal leg circumference elastic members 16a and 16b are arranged so as to be curved along the recessed portion 10c of the exterior body 10.
  • the ventral leg circumference elastic member 16a (dorsal leg circumference elastic member 16b) is formed from both ends of the ventral waist circumference portion 10f (dorsal waist circumference portion 10b) in the left-right direction to the ventral waist circumference portion 10f (dorsal waist circumference portion 10f).
  • the side waist circumference portion 10b) is curved diagonally downward toward the inside in the longitudinal direction and the inside in the left-right direction, and the central portion in the left-right direction is also curved inward in the longitudinal direction and inward in the left-right direction.
  • the dorsal leg circumference elastic member 16b has a portion curved to the ventral side in the central portion in the left-right direction beyond the central CL in the longitudinal direction of the exterior body 10.
  • the ventral and dorsal leg circumference elastic members 16a and 16b may be, for example, a plurality of rubber threads, a strip-shaped elastic sheet having elasticity, or the like, and in a stretched state, a hot melt adhesive or the like may be used. It is joined and fixed by an adhesive.
  • ventral and dorsal leg circumference elastic members 16a and 16b have a pair of leg circumference openings in the upper half of the pair of leg circumference openings 1b in the vertical direction in the state of the pants-type absorbent article 1 of FIG. It is also referred to as a curved elastic member 16a and 16b along each of the portions 1b.
  • a curved elastic member 16a and 16b along each of the portions 1b.
  • the absorbent core 22 of the absorbent body 20 has a constricted portion 22c between both ends in the longitudinal direction, which is narrower in the left-right direction than both ends. ing.
  • the narrow portion of the absorbent core 22 in the left-right direction corresponds to the crotch portion of the wearer, and narrowing the width in the crotch portion facilitates the rise of the three-dimensional gather 50. This reduces the escape of air in the left-right direction, creates an air flow in the longitudinal direction, and facilitates the escape of air to the wearer's buttocks and abdomen.
  • the absorbent core 22 is not limited to a shape having a constricted portion 22c, and may be, for example, a substantially rectangular shape in a plan view.
  • the back sheet 25 according to the second embodiment is a liquid-impermeable sheet that covers the absorbent core 22 from the non-skin side.
  • the width direction dimension of the back sheet 25 is sufficiently larger than that of the absorbent core 22, and the center side in the left-right direction is the position where both ends in the width direction form the left-right end portion 20ee of the absorbent body 20 as a folded position. Folded back (inside).
  • a liquid-impermeable leak-proof sheet or the like may be further provided between the core wrap sheet 22a and the back sheet 25.
  • a pair of three-dimensional gathers 50 that can stand up on the skin side in the thickness direction are formed by the side sheet 28 (FIG. 11).
  • the pair of three-dimensional gathers 50 are provided along the longitudinal direction on both left and right sides of the absorbent body 20 when viewed in the thickness direction (FIG. 10), and include a plurality of elastic members 51 that expand and contract in the longitudinal direction. ..
  • the three-dimensional gather 50 according to the second embodiment is formed from a portion outside the side sheet 28 in the left-right direction.
  • the side seats 28 are overlapped from the skin side of the top sheet 24 so as to extend outward in the left-right direction from the top sheet 24, and are joined to the left-right end portion of the top sheet 24 along the longitudinal direction at the joint portion 28A. Has been done. Then, the unjoined portion extending outward in the left-right direction is folded back toward the skin side in the thickness direction and inward in the left-right direction with the fulcrum 28S1 as the bending starting point to form the three-dimensional gather 50. ing.
  • the joint portion 28A joined to the left-right end portion of the top sheet 24 functions as the base end portion of the three-dimensional gather 50, and the portion on the front end side in the left-right direction further than the base end portion (28A) is a free end. It becomes possible to stand up as a department.
  • a plurality of elastic members 51 such as rubber threads along the longitudinal direction of the absorbent body 20 are fixed to the pair of three-dimensional gathers 50 in a state of being extended in the longitudinal direction. The stretchability in the longitudinal direction developed by the member 51 causes the free end to stand on the skin side of the wearer.
  • the center of the top sheet 24 in the left-right direction is in direct contact with the skin, but the outside of the top sheet 24 is a folded side. It will come into contact with the skin via the sheet 28.
  • the part that comes into direct contact with the top sheet 24 can quickly feel the cooling sensation effect, and the part that comes into contact with the side sheet 28 and the skin can deliver the cooling sensation to the skin with a time lag, and the cooling sensation effect lasts. Is improved.
  • the ventral waist circumference portion 10f (dorsal waist circumference portion 10b) of the second embodiment has a plurality of ventral sides on the outer side in the longitudinal direction from both ends 20et in the longitudinal direction of the absorbent main body 20. It has an elastic member 13a (dorsal elastic member 13b). Then, when viewed in the thickness direction (front-back direction when worn), the rigidity of the overlapping portion where the ventral waist circumference portion 10f (dorsal waist circumference portion 10b) and both end portions 20e in the longitudinal direction of the absorbent body 20 overlap, and absorption.
  • the rigidity of the outer portion in the longitudinal direction is compared with that of both ends 20et in the longitudinal direction of the main body 20, the rigidity of the above-mentioned overlapping portion is larger. Only the materials (skin side sheet 11 and non-skin side sheet 14) of the ventral waist circumference portion 10f (dorsal waist circumference portion 10b) are present in the outer portion in the longitudinal direction from both ends 20et in the longitudinal direction of the absorbent body 20. It is a part. Therefore, since the rigidity is smaller than that of the overlapping portion where the absorbent main body 20 overlaps, the portion of only the ventral waist circumference portion 10f (dorsal waist circumference portion 10b) is the ventral elastic member 13a (dorsal elastic member 13b).
  • Fine wrinkles are likely to be formed due to shrinkage, and larger wrinkles are likely to be formed at the overlapping portion.
  • a large air flow is formed at the overlapping portion with the absorbent main body 20, and a small air flow is formed outside the both ends 20et in the longitudinal direction, and the air flow including the volatile cooling agent 26 is formed. It becomes easier to control.
  • both end portions 20e in the longitudinal direction of the absorbent main body 20 and a plurality of antinodes when viewed in the thickness direction (direction penetrating the paper surface), both end portions 20e in the longitudinal direction of the absorbent main body 20 and a plurality of antinodes. It has a portion that overlaps with at least a part of the side elastic member 13a (dorsal elastic member 13b).
  • the ventral elastic member 13a (dorsal elastic member 13b) contracts in the left-right direction.
  • Concavities and convexities are more likely to be formed on both ends 20e of the absorbent body 20 in the longitudinal direction, and air is more likely to escape. As a result, the moisture accumulated in the absorbent main body 20 can be more easily released to the upper side in the vertical direction, and the cooling sensation effect is improved.
  • FIG. 12 is a schematic plan view of the pants-type absorbent article 1 in the unfolded and stretched state according to the second embodiment as viewed from the non-skin side.
  • the top sheet 24 may be a film made of polyethylene or the like, or may have a large number of openings. When the top sheet 24 has a large number of openings, air containing the volatile cooling sensation agent is released from the openings, and the wearer can more easily feel the cooling sensation effect.
  • the sheet material (the above-mentioned elastic sheet 12, the non-stretchable sheet 14, the skin-side sheet 11, and the non-skin-side sheet 14) constituting the exterior body 10 of the present invention, or the absorbent main body 20 is worn.
  • the skin-side sheet (top sheet 24 described above) that comes into contact with the human skin may be a sheet having cotton fibers. The presence of the cotton fiber that easily contains moisture makes it easier to control the escape route of the air containing the volatile cooling sensation agent 26, and the expression of the cooling sensation effect can be enhanced in the sheet portion having the cotton fiber.
  • a modifier such as a blood modifier that facilitates the attraction of menstrual blood may be applied to the skin side surface of the top sheet 24 of the absorbent body 20 of the present invention.
  • a blood modifier for example, a polyoxypropylene glycol-based compound or the like can be used. Then, when viewed in the thickness direction (front-back direction when worn), the overlapping region where the modifier and the cooling sensitizer 26 overlap, and the non-overlapping region where the modifier and the cooling sensitizer 26 do not overlap. It is preferable to have.
  • the modifier facilitates drawing menstrual blood into the absorbent core 22, and the modifier acts as a membrane for the volatile cooling agent 26, so that the cooling agent in the overlapping region 26 actions can be controlled.
  • such a film makes it difficult for the cooling air generated from the non-overlapping region and the moisture between the absorbing body 20 and the body to enter the absorbing body 20 side, and the air (moisture) is released. It is easy to pull out through between the body and the absorbent body 20.
  • a plurality of squeezed portions 40 having a concave shape recessed from the skin side to the non-skin side are formed on the skin side of the absorbent body 20, but the present invention is not limited to this.
  • the absorbent body 20 extends in the longitudinal direction of the absorbent body 20 and is non-skinned at the central portion in the left-right direction and at least the rear side (dorsal side) of the absorbent article 1 in the front-rear direction (longitudinal direction).
  • a central squeezed portion (not shown) squeezed from the surface side may be provided.
  • the central squeezed portion is a concave region recessed from the non-skin side to the skin side, which is formed by squeezing the central portion of the absorbent main body 20 in the left-right direction from the non-skin side.
  • the recessed area makes it easier for the absorbent body 20 to protrude toward the skin when worn. Since the central pressed portion of the absorbent main body 20 projects toward the skin, it becomes easier to apply the absorbent main body 20 to the buttocks, and the distance between the body and the absorbent main body 20 is narrowed, so that the absorbent main body 20 is coated. It is possible to improve the effect of the cooling agent 26.
  • the absorbent core 22 has a middle / high portion 22na, but the present invention is not limited to this.
  • portions thicker than the periphery may be provided on both sides of the absorbent core 22 in the left-right direction. Since the absorbent core 22 has convex portions (thick portions) on both sides in the left-right direction, it is possible to reduce the escape of the cooling sensation agent 26 from the left-right direction. As a result, it is easy to create an air flow in the longitudinal direction of the absorbent core 22. The longitudinal air flow facilitates the transfer of the cooling sensation 26 to the wearer's lower abdomen and buttocks.
  • a liquid-permeable non-woven fabric can be used, but the non-woven fabric may be a non-woven fabric containing irregularities formed by using heat-extended fibers or the like.
  • Concavo-convex The unevenness of the non-woven fabric is formed by a grid-like recess extending in a direction intersecting each of the longitudinal direction and the left-right direction of the absorbent main body 20, and a plurality of convex portions formed in a region surrounded by the recess. Can be formed.
  • the non-woven fabric having such unevenness makes it easier for unevenness to be formed on both end portions 20e of the absorbent main body 20 in the longitudinal direction, and makes it easier for moisture accumulated in the absorbent main body 20 to escape from the unevenness.

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
PCT/JP2021/005688 2020-04-06 2021-02-16 パンツ型吸収性物品 Ceased WO2021205751A1 (ja)

Priority Applications (3)

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CN202190000393.XU CN219332233U (zh) 2020-04-06 2021-02-16 内裤状吸收性制品
KR1020227033766A KR20220163382A (ko) 2020-04-06 2021-02-16 팬츠형 흡수성 물품
SA522440814A SA522440814B1 (ar) 2020-04-06 2022-10-04 منتج ماص من نوع السراويل الداخلية

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JP2020068488A JP7143362B2 (ja) 2020-04-06 2020-04-06 パンツ型吸収性物品
JP2020-068488 2020-04-06

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JP2023177094A (ja) * 2022-06-01 2023-12-13 ユニ・チャーム株式会社 パンツ型吸収性物品
WO2025205650A1 (ja) * 2024-03-25 2025-10-02 ユニ・チャーム株式会社 パンツ型吸収性物品
WO2025205649A1 (ja) * 2024-03-25 2025-10-02 ユニ・チャーム株式会社 パンツ型吸収性物品

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JP2023061803A (ja) * 2021-10-20 2023-05-02 ユニ・チャーム株式会社 吸収性物品

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SA522440814B1 (ar) 2025-01-07
CN219332233U (zh) 2023-07-14
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JP2021164529A (ja) 2021-10-14
JP2022136273A (ja) 2022-09-15

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