WO2020256103A1 - 吸収性物品、及び吸収性物品の製造方法 - Google Patents

吸収性物品、及び吸収性物品の製造方法 Download PDF

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Publication number
WO2020256103A1
WO2020256103A1 PCT/JP2020/024138 JP2020024138W WO2020256103A1 WO 2020256103 A1 WO2020256103 A1 WO 2020256103A1 JP 2020024138 W JP2020024138 W JP 2020024138W WO 2020256103 A1 WO2020256103 A1 WO 2020256103A1
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WO
WIPO (PCT)
Prior art keywords
sheet
absorbent article
width direction
dimensional
elastic member
Prior art date
Application number
PCT/JP2020/024138
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English (en)
French (fr)
Japanese (ja)
Inventor
夕貴 橋野
工藤　悦子
翠 手島
Original Assignee
ユニ・チャーム株式会社
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Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to CN202080045098.6A priority Critical patent/CN114080206B/zh
Publication of WO2020256103A1 publication Critical patent/WO2020256103A1/ja

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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
    • A61F13/45—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
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15756—Applying tabs, strips, tapes, loops; Knotting the ends of 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15764—Transferring, feeding or handling devices; Drives
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15804—Plant, e.g. involving several steps
    • 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
    • A61F13/494—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 characterised by edge leakage prevention 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
    • A61F13/45—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
    • A61F13/494—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 characterised by edge leakage prevention means
    • A61F13/49406—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 characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/49413—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 characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
    • 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
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F2013/15821—Apparatus or processes for manufacturing characterized by the apparatus for manufacturing
    • 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
    • A61F13/494—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 characterised by edge leakage prevention means
    • A61F2013/4948—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 characterised by edge leakage prevention means the edge leakage prevention means being elastic

Definitions

  • the present invention relates to an absorbent article and a method for producing an absorbent article.
  • FIG. 4 of Patent Document 1 from the side sheet 1 arranged outside the width direction of the center of the absorbent article in the width direction, the three-dimensional gathers that can stand up on the skin surface side, and the three-dimensional gathers. Also disclosed are absorbent articles having leg gathers arranged outside in the width direction. The side seats are folded back from two creases extending in the front-rear direction.
  • the leg gather is configured by folding back the side sheet with one crease (outer crease in the width direction) as the base point. Since the leg gather has a contraction region that contracts in the front-rear direction with a predetermined width, it is easy to maintain the flatness of the leg gather. As a result, the leg gathers can be easily fitted to the wearer's skin on the surface, and the wearer's leg circumference can be suppressed from being locally pressed.
  • the three-dimensional gather is configured by folding back the side sheet with the other crease (inner crease in the width direction) as the base point.
  • the three-dimensional gather has an upright portion that can be erected by a three-dimensional elastic member having elasticity in the front-rear direction, and an upright edge that serves as an upright fulcrum of the upright portion.
  • the upright portion is composed of a folded portion that is folded back from the inner crease as a base point and a non-folded portion that extends from the inner fold to the upright end edge. The end of the folded portion far from the inner crease is joined to the non-folded portion.
  • the excrement that has flowed on the surface of the absorbent article and moved outward in the width direction immediately contacts the non-folded portion in the vicinity of the standing edge.
  • the excrement tends to seep out of the three-dimensional gather in the width direction, and the excrement may leak.
  • the fold In order to reduce the area from the edge of the fold to the rising edge, the fold extends from the inner crease to the rising edge, i.e. the length of the fold is equal to the length of the non-fold.
  • the absorbent article according to one aspect is sandwiched between the front-rear direction, the width direction orthogonal to the front-rear direction, the thickness direction, the front waist circumference area, the rear waist circumference area, the front waist circumference area, and the rear waist circumference area. It has an inseam area, one side sheet arranged outside the width direction of the center of the absorbent article in the width direction, and three-dimensional gathers and leg gathers.
  • the three-dimensional gather has an upright portion that can be erected by one or more three-dimensional elastic members having elasticity in the front-rear direction, and an upright edge that serves as an upright fulcrum of the upright portion.
  • the leg gather has a contraction region that contracts in the front-rear direction with a predetermined width by one or more leg elastic members having elasticity in the front-rear direction, and is arranged outside the upright edge in the width direction.
  • the three-dimensional gathers and the leg gathers are composed of a pair of sheet layers facing each other by folding back the side sheet 1 with one crease extending in the front-rear direction as a base point.
  • the pair of sheet layers are in contact with the leg elastic member arranged on the outermost side in the width direction from the position in contact with the three-dimensional elastic member located closest to the skin surface side when the three-dimensional gather is erected. It extends continuously until.
  • the method for manufacturing an absorbent article includes one side sheet arranged outside the center in the width direction of the absorbent article, three-dimensional gathers, and leg gathers, and the three-dimensional object is described.
  • the gather has an upright portion that can be erected by one or more three-dimensional elastic members having elasticity in the front-rear direction, and an upright edge that serves as an upright fulcrum of the upright portion, and the leg gather has the leg gather in the front-rear direction. It has a contraction region that contracts in the front-rear direction with a predetermined width by one or more leg elastic members having elasticity, and is arranged outside the width direction from the standing edge, and is arranged with the three-dimensional gather.
  • the leg gather is a method for manufacturing an absorbent article for producing an absorbent article composed of a pair of sheet layers facing each other by folding back the side sheet 1 with one crease extending in the front-rear direction as a base point.
  • the manufacturing method includes a forming step in which a composite stretchable sheet having the pair of sheet layers and having elasticity forms a continuous sheet continuum in the front-rear direction.
  • a plurality of continuous elastic members composed of a first continuous elastic member constituting the one or more three-dimensional elastic members and a second continuous elastic member constituting the one or more leg elastic members are formed on the side sheet of the above 1.
  • FIG. 1 is a schematic front view of the absorbent article 1 according to the present embodiment.
  • FIG. 2 is a schematic plan view of the absorbent article 1 according to the present embodiment.
  • FIG. 3 is a schematic cross-sectional view taken along the F3-F3 cross section shown in FIG.
  • FIG. 4 is a schematic cross-sectional view of the absorbent article shown in FIG.
  • FIG. 5 is a schematic plan view of the absorbent article 1 according to the present embodiment.
  • FIG. 6 is a diagram for explaining three-dimensional gathers.
  • FIG. 7 is a diagram (No. 1) for explaining a method for manufacturing the absorbent article 1.
  • FIG. 8 is a diagram (No. 2) for explaining a method for manufacturing the absorbent article 1.
  • FIG. 9 is a diagram (No. 3) for explaining a method for manufacturing the absorbent article 1.
  • FIG. 10 is a schematic cross-sectional view of the absorbent article according to the modified example.
  • the absorbent article according to one aspect is sandwiched between the front-rear direction, the width direction orthogonal to the front-rear direction, the thickness direction, the front waist circumference area, the rear waist circumference area, the front waist circumference area, and the rear waist circumference area. It has an inseam area, one side sheet arranged outside the width direction of the center of the absorbent article in the width direction, and three-dimensional gathers and leg gathers.
  • the three-dimensional gather has an upright portion that can be erected by one or more three-dimensional elastic members having elasticity in the front-rear direction, and an upright edge that serves as an upright fulcrum of the upright portion.
  • the leg gather has a contraction region that contracts in the front-rear direction with a predetermined width by one or more leg elastic members having elasticity in the front-rear direction, and is arranged outside the upright edge in the width direction.
  • the three-dimensional gathers and the leg gathers are composed of a pair of sheet layers facing each other by folding back the side sheet 1 with one crease extending in the front-rear direction as a base point.
  • the pair of sheet layers are in contact with the leg elastic member arranged on the outermost side in the width direction from the position in contact with the three-dimensional elastic member located closest to the skin surface side when the three-dimensional gather is erected. It extends continuously until.
  • a pair of sheet layers are continuously present between the three-dimensional elastic member located closest to the skin surface when the three-dimensional gather is erected and the leg elastic member arranged on the outermost side in the width direction.
  • the standing edge of the three-dimensional gather is present between the three-dimensional elastic member located closest to the skin surface when the three-dimensional gather stands and the leg elastic member arranged on the outermost side in the width direction, the surface of the absorbent article is affected. Even if the excrement that flows and moves outward in the width direction exudes from one sheet layer (the inner sheet layer in the width direction in the upright state and the non-skin surface side sheet layer in the extended state) to the outside in the width direction.
  • the other sheet layer (the outer sheet layer in the width direction in the upright state and the sheet layer on the skin surface side in the extended state) can suppress exudation to the outside in the width direction. As a result, it is possible to suppress the leakage of excrement generated by exuding to the outside in the width direction of the three-dimensional gather.
  • both of the pair of seat layers overlap all leg elastic members in the thickness direction T, which makes it easier to maintain the flatness of the leg gathers, and the leg gathers fit the wearer's skin surface. It will be easier.
  • the side sheet of 1 may be folded back so that the 1 crease is arranged in the 3D gather.
  • the one or more three-dimensional elastic members and the one or more leg elastic members may be sandwiched between the pair of sheet layers.
  • the creases on the side sheet are softer to the touch than the edges of the side sheet (edges with cut surfaces). Therefore, when the three-dimensional gathers are erected, the folds of the side sheet, which are soft to the touch, hit the wearer's skin, so that deterioration of wearing comfort due to the erection of the three-dimensional gathers can be suppressed.
  • the absorbent article has a component that is located on the non-skin side of the side sheet of 1 and is directly or indirectly joined to the side sheet of 1.
  • the constituent member may extend outward in the width direction from the standing edge. According to this aspect, since the rigidity of the leg gather can be increased by the constituent member, it becomes easy to maintain the flatness of the leg gather.
  • the constituent member may have a liquid opaque sheet having liquid opacity.
  • the liquid-impermeable sheet can prevent the excrement from seeping out to the non-skin surface side of the liquid-impermeable sheet.
  • each of the pair of sheet layers may have an edge in the width direction of the side sheet of 1.
  • the edge of one sheet layer of the pair of sheet layers and the edge of the other sheet layer do not overlap in the thickness direction. As a result, the edge of one sheet layer and the edge of the other sheet layer are less likely to hit the wearer's skin together, and deterioration of the touch can be suppressed.
  • the number of the one or more leg elastic members may be larger than the number of the one or more three-dimensional elastic members.
  • the number of the one or more leg elastic members and the number of the one or more three-dimensional elastic members may be two or more.
  • the distance between the leg elastic members may be narrower than the distance between the three-dimensional elastic members.
  • the absorbent article uses an adhesive to attach the pair of sheet layers to each other between the three-dimensional elastic member located closest to the non-skin surface side when the three-dimensional gather is erected and the erected edge. It may have an in-sheet joint to be joined. According to this aspect, it becomes difficult for the excrement to reach the outer sheet layer in the width direction due to the joint portion, and the leakage of the excrement generated by exuding to the outside in the width direction of the three-dimensional gather can be suppressed.
  • the pair of sheet layers are not joined to each other by an adhesive in the region between the three-dimensional elastic member located closest to the non-skin surface side when the three-dimensional gather is upright and the upright edge. It may be an inner non-bonded region. According to this aspect, since a space is generated between the pair of sheet layers, it is possible to prevent excrement from continuously permeating from the inner sheet layer in the width direction to the outer sheet layer.
  • the region outside the leg elastic member arranged on the outermost side in the width direction is an outer non-bonded region in which the pair of sheet layers are not bonded to each other. You can.
  • the outer region in the width direction is more likely to hit the wearer's skin than the leg elastic member arranged on the outermost side in the width direction. Therefore, in the region, since the pair of sheet layers are not joined to each other, the rigidity of the region is not increased, and deterioration of the touch can be suppressed.
  • the side sheet 1 in a plan view of the absorbent article, is curved outward in the width direction, at least behind the center of the absorbent article in the anteroposterior direction. However, it may have a portion extending rearward.
  • the side seats are easily arranged along the shape of the wearer's body (specifically, the boundary line between the buttocks and the legs (flesh crack line)), and the wearer feels uncomfortable due to the side seats. It becomes difficult to give.
  • a storage space for excrement tools
  • leakage of excrement can be suppressed.
  • the method for manufacturing an absorbent article includes one side sheet arranged outside the center in the width direction of the absorbent article, three-dimensional gathers, and leg gathers, and the three-dimensional object is described.
  • the gather has an upright portion that can be erected by one or more three-dimensional elastic members having elasticity in the front-rear direction, and an upright edge that serves as an upright fulcrum of the upright portion, and the leg gather has the leg gather in the front-rear direction. It has a contraction region that contracts in the front-rear direction with a predetermined width by one or more leg elastic members having elasticity, and is arranged outside the width direction from the standing edge, and is arranged with the three-dimensional gather.
  • the leg gather is a method for manufacturing an absorbent article for producing an absorbent article composed of a pair of sheet layers facing each other by folding back the side sheet 1 with one crease extending in the front-rear direction as a base point.
  • the composite stretchable sheet having the pair of sheet layers and having elasticity has a forming step of forming a continuous sheet continuum in the front-rear direction.
  • a plurality of continuous elastic members composed of a first continuous elastic member constituting the one or more three-dimensional elastic members and a second continuous elastic member constituting the one or more leg elastic members are formed on the side sheet of the above 1.
  • the pair of sheet layers facing each other by folding back one side sheet is the most skin surface when the three-dimensional gather stands up. It extends continuously in the width direction from the position in contact with the three-dimensional elastic member located on the side to the position in contact with the leg elastic member arranged on the outermost side in the width direction.
  • both of the pair of seat layers overlap with all the leg elastic members, it is easy to maintain the flatness of the leg gathers, and the leg gathers are easy to fit on the wearer's skin. Therefore, it is possible to manufacture an absorbent article capable of reducing the leakage of excrement while facilitating the maintenance of the flatness of the leg gather.
  • it is not necessary to fold the side sheet continuum a plurality of times to form the sheet continuum it is possible to suppress an increase in the manufacturing process.
  • the forming step is performed in an intermediate region between a first elastic region in which the first continuous elastic member is arranged and a second elastic region in which the second continuous elastic member is arranged. It may further have a step of applying an adhesive that joins the sidesheet continuums together.
  • the intermediate region has lower rigidity than the first elastic region and the second elastic region because the continuous elastic member is not arranged. Therefore, the rigidity of the intermediate region can be increased by applying an adhesive in the intermediate region and joining the side sheet continuums to each other. As a result, wrinkles are less likely to occur in the sheet continuum when the sheet continuum is joined to another member, and the sheet continuum can be appropriately joined to the other member.
  • the composite stretchable sheet has a low stretchable region at the anterior-posterior end of the composite stretchable sheet, which has a lower stretchable force than the central portion of the composite stretchable sheet in the front-rear direction.
  • the step of forming the low expansion / contraction region in the sheet continuum and the sheet continuum are arranged on the non-skin surface side of the side sheet of 1 at least in a region overlapping the low expansion / contraction region. It may have a step of joining the constituent members to be joined to a continuous body. According to this aspect, this makes it difficult for the sheet continuum to shrink in the low expansion / contraction region, so that the sheet continuum can be easily joined to the continuum.
  • the low expansion / contraction region in the step of forming the low expansion / contraction region, may be formed by squeezing the sheet continuum and cutting the continuous elastic member.
  • a low expansion and contraction region can be formed and the rigidity of the sheet continuum can be increased by pressing.
  • the sheet continuum is less likely to shrink, so that the sheet continuum can be easily joined to the continuum.
  • the side sheet of 1 in a plan view of the absorbent article, is at least posterior to the center of the absorbent article in the anteroposterior direction, and is outside in the width direction.
  • the step of bending the sheet continuum and the curved sheet continuum are arranged on the non-skin surface side of the side sheet of 1 so as to have a portion extending backward while being curved toward. It may have a step of joining the constituent members to a continuous body.
  • the side seats are easily arranged along the shape of the wearer's body (specifically, the boundary line between the buttocks and the legs (flesh crack line)), and the wearer feels uncomfortable due to the side seats.
  • the manufacturing method provides a body adhesive for joining the sheet continuum to a continuum of continuous components arranged on the non-skin surface side of the side sheet of 1. It may have a step of applying to a sheet continuum. In the step of curving the sheet continuum, the sheet continuum coated with the main body adhesive may be curved. According to this aspect, it is not necessary to apply a high degree of control for applying the main body adhesive along the curvature of the sheet continuum, and it becomes easy to apply the main body adhesive at a target position.
  • the side sheet of the above 1 absorbs at least the absorption.
  • the sheet may have a step of joining the sheet to a continuous body in which the constituent members arranged on the non-skin surface side of the side sheet of 1 above are joined.
  • the force applied to the inside in the width direction and the force applied to the outside in the width direction are alternately and repeatedly applied to the sheet continuum, so that the sheet continuum may not be curved as intended. is there. Therefore, by individually bending the composite telescopic sheet, the composite telescopic sheet can be curved as intended.
  • the absorbent article is, for example, a pants-type disposable diaper, a tape-type disposable diaper, or a shorts-type sanitary napkin.
  • the absorbent article of the embodiment is a pants-type disposable diaper.
  • FIG. 1 is a schematic front view of the absorbent article 1 according to the present embodiment.
  • FIG. 2 is a schematic plan view of the absorbent article 1 according to the present embodiment. The schematic plan view shown in FIG. 2 shows an stretched state in which the absorbent article 1 is stretched to a state in which wrinkles are not formed in a state where the side joint portion 18 described later is unfolded.
  • FIG. 3 is a schematic cross-sectional view taken along the F3-F3 cross section shown in FIG.
  • FIG. 4 is a schematic cross-sectional view of the absorbent article shown in FIG.
  • FIG. 4A is a schematic cross-sectional view of the absorbent article at a position from the front waist circumference region of the inseam region, and is a schematic cross-sectional view along the F4A-F4A cross section shown in FIG.
  • FIG. 4B is a schematic cross-sectional view of the absorbent article at a position from the rear waist circumference region of the inseam region, and is a schematic cross-sectional view along the F4B-F4B cross section shown in FIG.
  • FIG. 5 is a schematic plan view of the absorbent article 1 according to the present embodiment.
  • FIG. 6 is a diagram for explaining three-dimensional gathers.
  • FIG. 6 is a diagram for explaining three-dimensional gathers.
  • FIG. 6 is a diagram showing a state in which three-dimensional gathers are erected in the F6-F6 cross section shown in FIG.
  • the members are separated in the thickness direction, they are in contact with each other in the thickness direction in the actual product.
  • the absorbent article 1 has a front-rear direction L and a width direction W that are orthogonal to each other.
  • the anteroposterior direction L is defined by the direction extending to the anterior side and the posterior side of the body.
  • the anteroposterior direction L is a direction extending anterior-posteriorly in the deployed absorbent article 1.
  • the absorbent article 1 has an orthogonal thickness direction T in both the front-rear direction L and the width direction W.
  • the thickness direction T extends to the skin surface side T1 facing the wearer side and the non-skin surface side T2 on the side opposite to the skin surface side.
  • the absorbent article 1 has a front waist circumference area S1, a rear waist circumference area S2, and an inseam area S3.
  • the front waist circumference area S1 is a region facing the front waist circumference (abdomen) of the wearer.
  • the rear waist circumference area S2 is an area facing the rear waist circumference (back) of the wearer, and includes an area on which the body (buttocks) is placed when worn.
  • the inseam area S3 is located in the inseam of the wearer and is a region sandwiched between the front waist area S1 and the rear waist area S2. As shown in FIG.
  • a side joint portion 18 may be provided in which the end portion of the front waist circumference region S1 in the width direction W and the end portion of the rear waist circumference region S2 in the width direction W are joined.
  • the side joint portion 18 is defined by a portion in which the outer portion of the front waist circumference region S1 and the outer portion of the rear waist circumference region S2 are locked to each other.
  • the absorbent article 1 in the state where the side joint 18 is formed, the absorbent article 1 has a waist opening 16 through which the wearer's body is passed and a pair of legs into which the wearer's legs are inserted.
  • the leg circumference opening 17 is formed.
  • the waist opening 16 may be defined by the front end edge S1F of the front waist circumference area S1 and the rear end edge S2R of the rear waist circumference area S2.
  • FIG. 2 shows a state in which the joint at the side joint portion 18 is released and the absorbent article 1 is unfolded.
  • the side joint portion 18 may extend along the front-rear direction L in each of the front exterior body 20 and the rear exterior body 30.
  • the boundary between the front waist area S1 and the inseam area S3 may be defined by the rear end edge of the side joint 18 provided on the front exterior body 20.
  • the boundary between the rear waist circumference area S2 and the inseam area S3 may be defined by the front end edge of the side joint portion 18 provided on the rear exterior body 30.
  • the inseam area S3 may be an area provided with the leg circumference opening 17.
  • the outer portion in the present invention is a portion that occupies a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is an outer edge in the width direction W.
  • the inner portion in the present invention is a portion that occupies a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is an inner edge in the width direction W.
  • the front end portion and the rear end portion in the present invention are portions that occupy a certain range in the front-rear direction L including the edge in the front-rear direction L, and the front end edge and the rear end edge are edges in the front-rear direction L.
  • the outer edge includes a front edge and a trailing edge, and the outer edge includes a front edge and a trailing edge.
  • the absorbent article 1 may have an exterior body 15 and a main body 40.
  • the exterior body 15 overlaps the main body 40 in the thickness direction T.
  • the exterior body 15 may have a front exterior body 20 arranged in the front waist circumference region S1 and a rear exterior body 30 arranged in the rear waist circumference region S2.
  • the front exterior body 20 is an exterior body arranged on the non-skin surface side T2 of the main body portion 40 in the front waist circumference region S1.
  • the rear exterior body 30 is an exterior body that is separated from the front exterior body 20 in the front-rear direction L and is arranged on the non-skin surface side T2 of the main body portion 40 in the rear waist circumference region S2.
  • the exterior body 15 may have a cover sheet arranged on the skin surface side T1 of the main body portion 40.
  • the cover sheet includes a front cover sheet 27 provided on the skin surface side T1 of the main body portion 40 of the front waist circumference area S1 and a rear cover sheet 37 provided on the skin surface side T1 of the main body portion 40 of the rear waist circumference area S2.
  • the front cover sheet 27 and the rear cover sheet 37 may be made of a sheet such as a non-woven fabric.
  • the front cover sheet 27 may be composed of a portion in which the sheet constituting the front exterior body 20 is folded back to the skin surface side T1, or is composed of a sheet separate from the sheet constituting the front exterior body 20. May be good.
  • the rear cover sheet 37 may be composed of a portion in which the sheet constituting the rear exterior body 30 is folded back to the skin surface side T1, or is separate from the sheet constituting the rear exterior body 30. It may be composed of a sheet of.
  • the front exterior body 20 and the rear exterior body 30 may be made of a sheet such as a non-woven fabric.
  • the front exterior body 20 may have a first front seat 25 and a second front seat 26 located on the non-skin surface side T2 of the first front seat 25.
  • the front exterior body 20 may further include seats other than the first front seat 25 and the second front seat 26.
  • the rear exterior body 30 may have a plurality of sheets.
  • the front exterior body 20 may have a first rear seat 35 and a second rear seat 36 located on the non-skin surface side T2 of the first rear seat 35.
  • the rear exterior body 30 may further include seats other than the first rear seat 35 and the second rear seat 36.
  • the exterior body 15 may have a waist elastic member WE having elasticity in the width direction W.
  • the front waist elastic member 22 which is the waist elastic member WE having elasticity in the width direction W may be arranged in the front waist circumference region S1.
  • a rear waist elastic member 32 which is a waist elastic member WE having elasticity in the width direction W, may be arranged in the rear waist circumference region S2.
  • the front waist elastic member 22 may be arranged between the first front seat 25 and the second front seat 26, and the rear waist elastic member 32 is arranged between the first rear seat 35 and the second rear seat 36. May be done.
  • the waist elastic member WE may be composed of, for example, a thread rubber stretchable in the width direction W or an elastic sheet stretchable in the width direction W.
  • the waist elastic member WE may be composed of, for example, the exterior body 15 itself made of a stretchable sheet.
  • the waist elastic member WE of the present embodiment is made of thread rubber.
  • the main body 40 is arranged at least in the inseam area S3.
  • the main body portion 40 may be arranged over the front waist circumference area S1, the rear waist circumference area S2, and the inseam area S3.
  • the main body 40 is configured as a separate body from the front exterior body 20 and the rear exterior body 30, and is joined to the front exterior body 20 and the rear exterior body 30 in the front waist circumference area S1 and the rear waist circumference region S2, respectively.
  • the main body 40 may have an absorbent main body 41 and a pair of composite elastic sheets 60 arranged on the skin surface side T1 of the absorbent main body 41.
  • the absorbent body 41 has at least an absorbent core 50.
  • the absorption core 50 contains an absorption material.
  • the absorption core 50 may contain, for example, ground pulp or a highly absorbent polymer (SAP), or a mixture thereof.
  • SAP highly absorbent polymer
  • the absorption core 50 is arranged at least in the inseam area S3.
  • the absorption core 50 may be arranged in the front waist circumference region S1 and may be arranged in the rear waist circumference region S2.
  • the absorption core 50 may extend from the front waist circumference region S1 to the rear waist circumference region S2 in the front-rear direction L.
  • the absorption core 50 may be covered by a core wrap.
  • the absorbent main body 41 includes a center sheet 43 located on the skin surface side T1 of the absorbing core 50, a liquid impermeable sheet 46 located on the non-skin surface side T2 of the absorbing core 50, and liquid impermeable. It may have a non-skin surface sheet 47 arranged on the non-skin surface side T2 of the transparent sheet 46.
  • the absorbent body 41 of the present embodiment has a center sheet 43, a liquid-impermeable sheet 46, and a non-skin surface sheet 47 from the skin surface side T1 to the non-skin surface side T2 in the region in front of the absorption core 50. They are arranged in the order of.
  • the center sheet 43, the absorption core 50, the liquid permeable sheet 46, and the non-skin surface sheet 47 are arranged in this order from the skin surface side T1 to the non-skin surface side T2.
  • the center sheet 43 and the liquid impermeable sheet 46 may be arranged with the absorption core 50 interposed therebetween in the thickness direction T.
  • the center sheet 43 may have liquid permeability, and may be made of, for example, a non-woven fabric.
  • the center sheet 43 covers the center of the absorption core 50 in the width direction W.
  • the liquid-impermeable sheet 46 may be liquid-impermeable, and may be made of, for example, a film. As shown in FIG. 4, the liquid-impermeable sheet 46 may be arranged on the non-skin surface side T2 rather than the side sheet 62.
  • the non-skin surface sheet 47 may be made of, for example, a non-woven fabric.
  • the absorbent main body 41 may have a non-skin side side sheet 48 arranged outside the absorption core 50 in the width direction W.
  • the non-skin side side sheet 48 may be arranged on the non-skin side T2 rather than the side sheet 62.
  • the non-skin side side sheet 48 may be made of, for example, a non-woven fabric.
  • the absorbent body 41 does not have to have the non-skin side side sheet 48.
  • the absorbent main body 41 is joined to the exterior body 15 via the main body joint MB.
  • the absorbent main body 41 is joined to the front exterior body 20 via the front main body joint 28, and is joined to the rear exterior 30 via the rear main body joint 38.
  • the absorbent article 1 may be provided with a non-bonded region NBR in which the absorbent main body 41 and the exterior body 15 are not bonded.
  • the length of the absorbent body 41 in the width direction W at the position from the rear waist circumference area of the inseam area S3 is the length of the absorbent body 41 at the position from the front waist circumference area of the inseam area S3. It may be longer than the length of W in the width direction.
  • the outer edge of the absorbent body 41 may extend in the front-rear direction L along the composite telescopic sheet 60.
  • the pair of composite elastic sheets 60 extend in the front-rear direction L at both side portions of the absorbent main body 41 and are joined to the absorbent main body 41.
  • the composite elastic sheet 60 has elasticity in the front-rear direction L.
  • the composite telescopic sheet 60 has a pair of sheet layers 62p, as will be described later.
  • the pair of composite elastic sheets 60 may have a pair of side sheets 62, a three-dimensional elastic member 75, and a leg elastic member 85.
  • the side sheet 62 is arranged outside the center C of the width direction W of the absorbent article 1 in the width direction W.
  • the side sheet 62 covers the outer portion of the center sheet 43 on the skin surface side T1 of the center sheet 43.
  • the side sheet 62 is composed of one sheet.
  • the single sheet constituting the side sheet may be a single sheet or a single laminated sheet in which the sheets are laminated in the thickness direction T.
  • the side sheet 62 of 1 extends rearward while curving outward in the width direction W, at least behind the center Lc of the absorbent article 1 in the front-rear direction L. May have a portion that is.
  • the maximum width between the pair of side seats 62 in the rear inseam area S3 is larger than the maximum width between the pair of side seats 62 in the front inseam area S3.
  • the side seat 62 extends in the front-rear direction L while being curved. Therefore, in the inseam region S3 on the front side, the side seat 62 may be joined to the center seat 43 and the non-skin side side seat 48. In the rear inseam region S3, the side sheet 62 may be joined to the non-skin side side sheet 48 and the non-skin surface sheet 47.
  • the side sheet 62 is folded back from the first fold FL1 which is one fold extending in the front-rear direction L from the side sheet 62 of 1.
  • the side sheet 62 of 1 may be folded back so that the first fold FL1 is arranged in the three-dimensional gather 70 described later. Therefore, the first fold FL1 is arranged inside the side sheet 62 in the width direction W.
  • the edge 62E of the side sheet 62 in the width direction W is arranged outside the side sheet 62 in the width direction W, that is, on the leg circumference opening 17 side.
  • the edge 62E of the side sheet 62 is the edge (edge having a cut surface) of the side sheet 62 itself.
  • a pair of sheet layers 62p facing each other are formed by folding back the side sheet 62 of 1 with the first fold FL1 as a base point.
  • the pair of sheet layers 62p has a first sheet layer 621 and a second sheet layer 622.
  • the first sheet layer 621 is arranged at least outside the width direction W in a state where the three-dimensional gathers are erected, and the second sheet layer 622 is arranged at least inside the width direction W.
  • the first sheet layer 621 is arranged on the skin surface side T1 in an elongated state in which the absorbent article is extended until the wrinkles of the three-dimensional gather disappear, and the second sheet layer 622 is arranged on the non-skin surface side T2.
  • the first fold FL1 may define the boundary between the first sheet layer 621 and the second sheet layer 622.
  • the pair of sheet layers 62p themselves may be further folded back from the second fold FL2, which is a fold extending in the front-rear direction L, inside the width direction W of the side sheet 62. ..
  • the first sheet layer 621 may be arranged on the non-skin surface side T2
  • the second sheet layer 622 may be arranged on the skin surface side T1.
  • Each of the pair of sheet layers 62p may have an edge 62E of one side sheet 62.
  • the edge 62E of the first sheet layer 621 and the edge 62E of the second sheet layer 622 overlap in the thickness direction T.
  • the edge 62E of the side sheet 62 may be arranged inside the width direction W of the absorbent body 41 with respect to the side edge in the width direction W. As a result, the edge 62E of the side sheet 62 is less likely to hit the wearer's skin, and deterioration of the touch can be suppressed.
  • the three-dimensional elastic member 75 is an elastic member having elasticity in the front-rear direction L. Due to the contraction of the three-dimensional elastic member 75, the three-dimensional gather 70 can stand up on the skin surface side T1.
  • the three-dimensional elastic member 75 may be made of, for example, a rubber thread or an elastic sheet.
  • the three-dimensional elastic member 75 is composed of one or more elastic members. When the number of the three-dimensional elastic members 75 is two or more, the three-dimensional elastic members 75 may be arranged at intervals in the width direction W.
  • the three-dimensional elastic member 75 is composed of a first three-dimensional elastic member 751 and a second three-dimensional elastic member 752. As shown in FIG.
  • the first three-dimensional elastic member 751 is located on the skin surface side T1 most when the three-dimensional gather 70 stands up. Therefore, the first three-dimensional elastic member 751 is arranged at the position closest to the apex Ap of the three-dimensional gather 70.
  • the second three-dimensional elastic member 752 is located on the non-skin surface side T2 most when the three-dimensional gather 70 stands up. Therefore, the second three-dimensional elastic member 752 is arranged at the position farthest from the apex Ap (first fold FL) of the three-dimensional gather 70 in the direction along the side sheet 62.
  • the side sheet 62 a pair of sheet layers 62p
  • the first three-dimensional elastic member 751 is the second three-dimensional elastic member. It is arranged outside the width direction W of 752. That is, the first three-dimensional elastic member 751 is arranged outside the width direction W of the second three-dimensional elastic member 752 in the non-standing state, but in the standing state, the width direction W is larger than that of the second three-dimensional elastic member 752. It may be located inside the body and on the skin surface side of the second three-dimensional elastic member 752.
  • the three-dimensional elastic member located closest to the skin surface side when the three-dimensional gather 70 stands is the first three-dimensional elastic member 751 in the present embodiment, but may be the second three-dimensional elastic member 752.
  • the three-dimensional elastic member located closest to the skin surface side when the three-dimensional gather 70 stands may be the three-dimensional elastic member located closest to the skin surface side in the center of the inseam region in the anteroposterior direction.
  • the absorbent article 1 is formed between the second three-dimensional elastic member 752 (the elastic member located on the non-skin surface side T2 most when the three-dimensional gather 70 is upright) and the upright edge 73 described later. It may have a joint portion (joint portion in the sheet) 63 for joining a pair of sheet layers 62p to each other with an adhesive.
  • the joint portion 63 in the sheet may be, for example, an HMA (hot melt adhesive).
  • the leg elastic member 85 is an elastic member having elasticity in the front-rear direction L.
  • the leg elastic member 85 is arranged outside the standing edge 73, which is a standing fulcrum of the standing portion 72, which will be described later, in the width direction W.
  • the leg elastic member 85 may be made of, for example, a rubber thread or an elastic sheet.
  • the leg elastic member 85 is composed of one or more elastic members. When the number of leg elastic members 85 is 2 or more, the leg elastic members 85 may be arranged at intervals in the width direction W. When the number of leg elastic members 85 and the number of three-dimensional elastic members 75 are two or more, the distance between the leg elastic members 85 may be narrower than the distance between the three-dimensional elastic members 75 in the width direction W. Further, the number of leg elastic members 85 may be larger than the number of three-dimensional elastic members 75.
  • the leg elastic member 85 is composed of a first leg elastic member 851, a second leg elastic member 852, a third leg elastic member 853, and a fourth leg elastic member 854.
  • the first leg elastic member 851 is arranged on the innermost side in the width direction W
  • the fourth leg elastic member 854 is arranged on the outermost side in the width direction W.
  • a contraction region 85R that contracts in the front-rear direction L with a predetermined width due to the contraction of the leg elastic member 85 is provided.
  • the width of the contraction region 85R is at least from the innermost leg elastic member 85 (that is, the first leg elastic member 851) to the outermost leg elastic member 85 (that is, the fourth leg elastic member 854) in the width direction W.
  • the length of the contraction region 85R may be longer than the length from the innermost leg elastic member 85 to the outermost leg elastic member 85.
  • the three-dimensional elastic member 75 and the leg elastic member 85 are sandwiched between a pair of sheet layers 62p. As a result, the three-dimensional elastic member 75 and the leg elastic member 85 are in contact with the sheet layer 62p.
  • the region outside the width direction W with respect to the fourth leg elastic member 854 arranged on the outermost side in the width direction W may be an outer non-bonded region in which the pair of sheet layers 62p are not bonded to each other.
  • the absorbent article 1 has a three-dimensional gather 70 and a leg gather 80.
  • the three-dimensional gather 70 can stand on the skin surface side T1.
  • the three-dimensional gather 70 may be referred to as a leak-proof cuff.
  • the three-dimensional gather 70 may have a leak-proof joint portion 71, an upright portion 72, and an upright end edge 73.
  • the leak-proof joint portion 71 is a portion for joining the side sheet 62 (composite telescopic sheet 60) to the absorbent main body 41.
  • the leak-proof joint 71 may be made of an adhesive.
  • the leak-proof joint 71 is located outside the front-rear joint portion 711 located outside the standing edge 73 in the front-rear direction L and outside the width direction W from the standing edge 73. It may have a width joint 712 to be arranged.
  • the front-rear joint portion 711 may have a front joint portion 711F arranged in the front waist circumference region S1 and a rear joint portion 711R arranged in the rear waist circumference region S2.
  • the standing portion 72 can stand by one or more three-dimensional elastic members 75.
  • the standing portion 72 stands up by the contraction of the three-dimensional elastic member 75.
  • the standing edge 73 serves as a standing fulcrum of the standing portion 72.
  • the upright edge 73 is composed of an inner edge of the front-rear joint 711 (a rear edge of the front joint 711F and a front edge of the rear joint 711R) and an inner edge of the width joint 712.
  • the front-rear joint portion 711 joins a portion where the side sheet 62 is folded back from the second fold FL2 as a base point and a portion which is not folded back from the second fold FL2 as a base point.
  • the leg gather 80 has a contraction region 85R.
  • the contraction region 85R contracts in the front-rear direction L due to the contraction of the leg elastic member 85 arranged outside the standing edge 73 in the width direction W in the inseam region S3. Further, the leg gather 80 is arranged outside the standing edge 73 in the width direction W in the extended state.
  • the three-dimensional gather 70 and the leg gather 80 are composed of a pair of sheet layers 62p.
  • the pair of sheet layers 62p are arranged on the outermost side in the width direction W from the position P1 in contact with the first three-dimensional elastic member 751 located closest to the skin surface when the three-dimensional gather 70 stands up. It extends continuously to the position P2 in contact with the fourth leg elastic member 854. Therefore, both of the pair of sheet layers 62p overlap all the leg elastic members 85 in the thickness direction T.
  • the pair of sheet layers 62p since the pair of sheet layers 62p are arranged on the three-dimensional gather 70 formed by the first fold FL1, the pair of sheet layers 62p exceeds the first three-dimensional elastic member 751 and the first fold FL1, that is, the apex of the three-dimensional gather 70. It extends continuously to Ap. Further, the pair of sheet layers 62p extends beyond the fourth leg elastic member 854 to the outside in the width direction W.
  • the constituent members arranged on the non-skin surface side T2 of 1 side sheet 62 and directly or indirectly joined to 1 side sheet 62 are standing ends. It may extend outward in the width direction W from the edge 73.
  • the constituent members may overlap one or more leg elastic members 85 in the thickness direction T, and preferably overlap all leg elastic members 85.
  • the constituent member is at least one of a center sheet 43, a liquid-impermeable sheet 46, a non-skin surface sheet 47, and a non-skin side side sheet 48. Therefore, for example, the liquid-impermeable sheet 46 may extend outward in the width direction W from the standing edge 73.
  • the center sheet 43 and the non-skin side side sheet 48 are directly joined to the side sheet 62.
  • the liquid-impermeable sheet 46 is indirectly joined to the side sheet 62 via the non-skin side side sheet 48.
  • the non-skin surface sheet 47 is directly bonded to the side sheet 62 (see FIG. 4A), and is indirectly bonded to the side sheet 62 via the liquid-impermeable sheet 46 and / or the non-skin side side sheet 48. ing.
  • the fourth three-dimensional elastic member 751 located on the skin surface side T1 when the three-dimensional gather 70 is erected is arranged on the outermost side in the width direction W.
  • a pair of sheet layers are continuously present between the leg elastic members 854. If there is an upright edge 73 between the three-dimensional elastic member located closest to the skin surface when the three-dimensional gather is upright and the leg elastic member arranged on the outermost side in the width direction, a pair of upright edge edges 73 is present.
  • the first The sheet layer 621 can prevent exudation to the outside in the width direction W. As a result, leakage of excrement generated by exuding to the outside of the width direction W of the three-dimensional gather can be suppressed.
  • both of the pair of seat layers overlap all the leg elastic members 85 in the thickness direction T, it is easy to maintain the flatness of the leg gather 80, and the leg gather 80 is on the wearer's skin. It will be easier to fit.
  • the first fold FL1 of the side sheet 62 is softer than the edge 62E of the side sheet 62. Therefore, since the three-dimensional elastic member 75 and the leg elastic member 85 are sandwiched between the pair of sheet layers 62p, the first fold FL1 of the side sheet 62, which is soft to the touch, hits the wearer's skin when the three-dimensional gather 70 stands up. Therefore, it is possible to suppress the deterioration of the wearing comfort of the absorbent article 1 due to the standing of the three-dimensional gather 70.
  • the leg gather 80 since the constituent members such as the center sheet 43, the liquid-impermeable sheet 46, the non-skin surface sheet 47, and the non-skin side side sheet 48 extend outward in the width direction W from the standing edge 73, the leg gather 80 The rigidity of the leg gather 80 can be increased, and the flatness of the leg gather 80 can be easily maintained.
  • the liquid opaque sheet 46 extends outside the width direction W from the standing edge 73, even if the excrement moves outside the width direction W from the standing edge 73, the liquid opaque sheet 46 is opaque. The sheet 46 can prevent excrement from seeping out to the non-skin surface side of the liquid-impermeable sheet 46.
  • the number of leg elastic members 85 is larger than the number of three-dimensional elastic members 75.
  • the rigidity of the leg gather 80 can be increased, and the flatness of the leg gather 80 can be easily maintained.
  • the distance between the leg elastic members 85 is narrower than the distance between the three-dimensional elastic members 75. As a result, by arranging a large number of leg elastic members 85 per unit area, the rigidity of the leg gather 80 can be increased, and the flatness of the leg gather 80 can be easily maintained.
  • the in-sheet joint portion 63 is provided between the second three-dimensional elastic member 752 and the upright edge 73, the excrement is collected by the in-sheet joint portion 63 in the outer first sheet layer in the width direction W. It becomes difficult to reach 621 (see FIG. 6). As a result, leakage of excrement generated by exuding the excrement to the outside of the width direction W of the three-dimensional gather 70 can be suppressed.
  • the region outside the width direction W of the fourth leg elastic member 854 is an outer non-joining region. Since the region easily hits the wearer's skin, the rigidity of the region is not increased and deterioration of the touch can be suppressed by not joining the pair of sheet layers 62p to each other in the region.
  • the side seat 62 has a portion (curved portion) extending rearward while curving outward in the width direction W on the rear side of the center Lc in the front-rear direction L. This makes it easier for the side seat 62 to be arranged along the shape of the wearer's body (specifically, the boundary line between the buttocks and the legs (flesh crack line)), giving the wearer a sense of discomfort due to the side seat 62. It becomes difficult. In addition, since a storage space for excrement (stool) can be secured, leakage of excrement can be suppressed.
  • FIGS. 7 to 9 are diagrams for explaining a method for producing the absorbent article 1.
  • the direction in which the component parts in the manufacturing process are conveyed is shown as the transport direction MD
  • the direction intersecting the transport direction is shown as the cross direction CD
  • the direction orthogonal to the transport direction MD and the cross direction CD is shown as the transverse direction TD.
  • the left figure shows the member seen from the transverse direction TD (upper side)
  • the right figure shows the member seen from the transport direction MD.
  • the right figure of the step S11 of FIG. 7 shows a schematic cross-sectional view along the C11-C11 cross section of the left figure.
  • the right figure of the step S12 of FIG. 7 shows a schematic cross-sectional view along the C12-C12 cross section of the left figure.
  • the right figure of the step S13 of FIG. 7 shows a schematic cross-sectional view along the C13-C13 cross section of the left figure.
  • the right figure of the step S20 of FIG. 8 shows a schematic cross-sectional view along the C20-C20 cross section of the left figure.
  • the right figure of the step S30 of FIG. 8 shows a schematic cross-sectional view along the C30-C30 cross section of the left figure.
  • the right figure of the step S40 of FIG. 8 shows a schematic cross-sectional view along the C40-C40 cross section of the left figure.
  • the right figure of the step S60 of FIG. 9 shows a schematic cross-sectional view along the C60-C60 cross section of the left figure.
  • the right figure of the step S70 of FIG. 9 shows a schematic cross-sectional view along the C70-C70 cross section of the left figure.
  • the right figure of the step S80 of FIG. 9 shows a schematic cross-sectional view along the C80-C80 cross section of the left figure.
  • the configuration of the manufacturing apparatus is not shown.
  • CL indicates a cutting line at which the sheet continuum 60C described later is cut.
  • PFL1 indicates a virtual line indicating a crease of the side sheet continuum 62C.
  • the first fold FL1 is provided by folding the side sheet continuum 62C at the position of PFL1.
  • the process for manufacturing the absorbent article according to the present embodiment includes steps S10 to S80.
  • Step S10 is a step in which the composite telescopic sheet 60 forms a sheet continuum 60C continuous in the front-rear direction L.
  • the step S10 may include a step S11, a step S12, and a step S13.
  • Step S11 is a step of applying the adhesive 63C to the conveyed side sheet continuum 62C.
  • the adhesive 63C is an adhesive corresponding to the joint portion 63 in the sheet.
  • the adhesive 63C joins the side sheet continuums 62C to each other.
  • the adhesive 63C is applied along the transport direction MD.
  • the adhesive 63C may be placed in the intermediate region MR.
  • the intermediate region MR is a region between the first elastic region ER1 and the second elastic region ER2.
  • the first elastic region ER1 is a region in which the first continuous elastic member 75C, which will be described later, is arranged.
  • the second elastic region ER2 is a region in which the second continuous elastic member 85C, which will be described later, is arranged.
  • the intermediate region MR is sandwiched between the first elastic region ER1 and the second elastic region ER2 in the transport direction MD.
  • Step S12 is a step of arranging a plurality of continuous elastic member CEs on the side sheet continuous body 62C.
  • the plurality of continuous elastic member CEs are composed of a first continuous elastic member 75C constituting one or more three-dimensional elastic members 75 and a second continuous elastic member 85C constituting one or more leg elastic members 85.
  • the continuous elastic member CE includes a three-dimensional elastic member 75 continuous in the front-rear direction L, and a leg elastic member 85 continuous in the front-rear direction L.
  • the first continuous elastic member 75C may be arranged between the position (PFL1) at which the first fold FL1 is formed and the adhesive 63C in the crossing direction CD.
  • the second continuous elastic member 85C may be arranged between the adhesive 63C in the crossing direction CD and one edge 62E closer to the adhesive 63C in the crossing direction CD of the side sheet continuum 62C.
  • the first continuous elastic member 75C is composed of the first continuous elastic member 751C and the first continuous elastic member 752C. Therefore, the first elastic region ER1 is a region between the first continuous elastic member 751C and the first continuous elastic member 752C.
  • the second continuous elastic member 85C is composed of the second continuous elastic member 851C to the second continuous elastic member 854C. Therefore, the second elastic region ER2 is a region between the second continuous elastic member 851C and the second continuous elastic member 854C.
  • An adhesive is applied to the continuous elastic member CE, and by arranging the continuous elastic member CE on the side sheet continuous body 62C, the continuous elastic member CE is fixed to the side sheet continuous body 62C.
  • An adhesive for fixing the continuous elastic member CE may be applied to the side sheet continuous body 62C.
  • Step S13 is a step of folding back the side sheet continuum 62C once so that all of the plurality of continuous elastic member CEs are sandwiched between the side sheet continuum 62C.
  • the side sheet continuous body 62C on one side is formed into a plurality of continuous elastic members with the position PFL1 serving as the first fold FL1 as a boundary. It overlaps with the side sheet continuum 62C on the other side where the CE is arranged in the transverse direction TD.
  • the distance from the position PFL1 to the other end edge 62E far from the adhesive 63C of the side sheet continuous body 62C in the crossing direction CD. Is required to be greater than or equal to the distance from position PFL1 to the second continuous elastic member 854C.
  • the adhesive 63C joins a pair of sheet layers 62p (first sheet layer 621 and second sheet layer 622) formed by folding back.
  • step S13 and after the illustration of the adhesive 63C is omitted.
  • a sheet continuum 60C having a pair of sheet layers 62p can be formed.
  • the absorbent article described in FIG. 4 of Patent Document 1 Japanese Patent Application Laid-Open No. 2018-511305
  • all the first continuous elastic members 75C are replaced with the side sheet continuum 62C by the first folding.
  • All the second continuous elastic members 85C can be sandwiched between the side sheet continuous bodies 62C by the second folding back. Therefore, in order to form the sheet continuum 60C, it is necessary to fold the side sheet continuum 62C at least twice.
  • the number of steps for forming the sheet continuum 60C can be reduced as compared with the absorbent article of FIG. 4 of Patent Document 1.
  • Step S20 is a step of forming a low expansion / contraction region LER (first low expansion / contraction region LER1).
  • the low stretchable region LER is a region at the end of the composite stretchable sheet 60 in the front-rear direction L and having a lower stretchable force than the central portion of the composite stretchable sheet 60 in the front-rear direction L.
  • the adhesive is applied so as to overlap the continuous elastic member CE (first continuous elastic member 75C) in the transverse direction TD.
  • the adhesive is applied so as to straddle the cutting line CL.
  • the adhesive is applied at intervals in the transport direction MD so that the stretch force of the central portion of the composite stretchable sheet 60 in the front-rear direction L does not decrease. Due to the rigidity of the adhesive, in the region where the adhesive is applied, the elastic force of the first continuous elastic member 75C is the first continuous in the region where the adhesive is not applied (the region before and after the adhesive transport direction MD). It becomes weaker than the elastic force of the elastic member 75C. Therefore, the region to which the adhesive is applied constitutes the first low-stretch region LER1, which is the low-stretch region LER.
  • Step S30 is a step of folding back the sheet continuum 60C.
  • the sheet continuum 60C is joined to each other via the adhesive applied in step S20.
  • Step S40 is a step of forming a low expansion / contraction region LER (second low expansion / contraction region LER2).
  • the sheet continuum 60C is squeezed in the region before and after the cutting line CL in the transport direction MD.
  • the continuous elastic member CE is cut.
  • the cut continuous elastic member CE contracts in the transport direction MD by contraction, and the three-dimensional elastic member 75 and the leg elastic member 85 are provided.
  • the region where the three-dimensional elastic member 75 and the leg elastic member 85 do not exist due to the contraction is a region where the elastic force is reduced and constitutes the second low elastic region LER2.
  • Step S50 is a step of applying the main body adhesive 71C to the sheet continuum 60C.
  • the main body adhesive 71C is an adhesive for joining the sheet continuous body 60C to the absorbent main body continuous body 41C in which the constituent members arranged on the non-skin surface side T2 of 1 side sheet 62 are continuous. Further, the main body adhesive 71C is an adhesive that constitutes the leak-proof joint portion 71. The main body adhesive 71C is applied to the area where the leak-proof joint 71 is arranged.
  • the main body adhesive 71C may be arranged in a region overlapping the low expansion / contraction region LER.
  • Step S60 is a step of bending the sheet continuum 60C.
  • the sheet continuum 60C is curved so that the side sheet 62 of 1 has a curved portion.
  • one side of the sheet continuum 60C in the transport direction MD is shifted to the crossing direction CD with respect to the other side of the sheet continuum 60C to obtain a sheet.
  • the continuum 60C can be curved.
  • the rear side of the sheet continuum 60C when the rear side of the sheet continuum 60C is shifted to one side (for example, the right side) of the crossing direction CD, the area between the next cutting line CL and the cutting line CL is in front of the sheet continuum 60C. Since the side is shifted to one side of the crossing direction CD, the rear side of the sheet continuum 60C may be shifted to the other side (for example, the left side) of the crossing direction CD. As a result, the space in the crossing direction CD is not increased, and the enormous manufacturing apparatus can be suppressed.
  • step S60 is performed after the step S40, the elastic members are not continuous in the width direction W. As a result, the force applied to the crossing direction CD by the elastic member can be reduced, and the sheet continuum 60C can be curved as intended. Since the step S60 is performed after the step S50, the sheet continuum 60C coated with the main body adhesive 71C is curved.
  • Step S70 is a step of joining the curved sheet continuum 60C to the absorbent body continuum 41C.
  • the sheet continuous body 60C can be joined to the absorbent main body continuous body 41C via the main body adhesive 71C.
  • the curved sheet continuum 60C can be joined to the absorbent main body continuum 41C at least at a position overlapping the low expansion / contraction region LER.
  • the absorbent main body continuous body 41C may have the absorbent main body 41 continuous in the front-rear direction L, or may be a continuous member directly joined to the composite telescopic sheet 60. For example, after the sheet continuous body 60C and the absorbent main body continuous body 41C that does not include the non-skin surface sheet 47 continuous in the front-rear direction L are joined, the non-skin surface sheet 47 is continuous in the front-rear direction L. May be joined. By joining the curved sheet continuum 60C to the absorbent main body continuous body 41C, the main body continuous body 40C in which the main body portion 40 is continuous can be formed.
  • Step S80 is a step of cutting the main body continuum 40C.
  • the main body continuum 40C is cut along the cutting line CL.
  • the side end portion of the main body continuum 40C in the crossing direction CD may be cut.
  • the side end portion 41CE of the absorbent body continuum 41C in the crossing direction CD may be cut along the sheet continuum 60C extending in the transport direction MD.
  • the main body 40 having a width on the rear side wider than the width on the front side can be manufactured.
  • the absorbent article 1 can be manufactured by joining the exterior body 15 to the main body 40.
  • the manufacturing method of the embodiment it is possible to manufacture the absorbent article 1 which can reduce the leakage of excrement while facilitating the maintenance of the flatness of the leg gather 80. Further, since it is not necessary to fold the side sheet continuum 62C a plurality of times to form the sheet continuum 60C, an increase in the manufacturing process can be suppressed.
  • step S11 the adhesive 63C for joining the side sheet continuums 62C to each other is applied to the intermediate region MR. Since the continuous elastic member CE is not arranged, the intermediate region MR has lower rigidity than the first elastic region ER1 and the second elastic region ER2. Therefore, the rigidity of the intermediate region MR can be increased by applying the adhesive 63C in the intermediate region MR and joining the side sheet continuums 62C to each other. As a result, when the sheet continuum 60C is joined to another member (absorbent main body continuum 41C), wrinkles are less likely to occur in the sheet continuum 60C (side sheet continuum 62C), and the sheet continuum 60C is used as a separate member. Can be joined properly.
  • step S70 the sheet continuum 60C is joined to the absorbent main body continuum 41C in the region overlapping the low expansion / contraction region LER.
  • the sheet continuum 60C is less likely to shrink, so that the sheet continuum 60C can be easily joined to the absorbent main body continuum 41C.
  • the second low expansion / contraction region LER2 is formed by pressing the sheet continuum 60C and cutting the continuous elastic member CE.
  • the continuous elastic member CE By cutting the continuous elastic member CE, the second low expansion / contraction region LER2 can be formed, and the rigidity of the sheet continuous body 60C can be increased by pressing. As a result, the sheet continuum 60C is less likely to shrink, so that the sheet continuum 60C can be easily joined to the absorbent main body continuum 41C.
  • step S70 the curved sheet continuum 60C is joined to the absorbent main body continuum 41C.
  • This makes it easier for the side seat 62 to be arranged along the shape of the wearer's body (specifically, the boundary line between the buttocks and the legs (flesh crack line)), giving the wearer a sense of discomfort due to the side seat 62. It is possible to manufacture the absorbent article 1 which becomes difficult.
  • the continuous elastic member CE can be curved as intended.
  • step S60 the sheet continuum 60C coated with the main body adhesive 71C is curved. Therefore, a high degree of control for applying the main body adhesive 71C along the curvature of the sheet continuum 60C becomes unnecessary, and the main body adhesive can be easily applied to the target position.
  • FIG. 10 is a schematic cross-sectional view of the absorbent article according to the modified example.
  • FIG. 10A is a schematic cross-sectional view of the absorbent article 1 according to the modified example 1
  • FIG. 10B is a schematic cross-sectional view of the absorbent article 1 according to the modified example 2.
  • the cross section in FIG. 10 corresponds to the F4A-F4A cross section. The same description as in the embodiment will be omitted.
  • Modification example 1 will be described with reference to FIG. 10A.
  • the edge 62E of the side sheet 62 is arranged on the three-dimensional gather 70.
  • the edge 62E of the side sheet 62 may form the apex Ap of the three-dimensional gather 70 described later.
  • the in-sheet joint portion 63 may not be provided in the region between the second three-dimensional elastic member 752 and the standing edge 73. That is, the region between the second three-dimensional elastic member 752 and the standing edge 73 may be an inner non-bonded region in which the pair of sheet layers 62p are not bonded to each other. As a result, a space is generated between the pair of sheet layers 62p, so that it is possible to prevent excrement from continuously permeating from the second sheet layer 622 to the first sheet layer 621.
  • Modification example 2 will be described with reference to FIG. 10B.
  • the edge 62E of the first sheet layer 621 and the edge 62E of the second sheet layer 622 do not have to overlap in the thickness direction T. Therefore, the edge 62E of the first sheet layer 621 and the edge 62E of the second sheet layer 622 may be displaced in the width direction W.
  • the edge 62E of the first sheet layer 621 and the edge 62E of the second sheet layer 622 are less likely to come into contact with the wearer's skin, and deterioration of the touch can be suppressed.
  • the edge 62E of the first sheet layer 621 may be arranged outside the edge 62E of the second sheet layer 622 in the width direction W, and may be located outside the edge 62E of the second sheet layer 622 in the width direction W. It may be arranged inside.
  • the method for producing an absorbent article may include a step of cutting the sheet continuum 60C after the step S50.
  • the sheet continuum 60C can be cut along the cutting line CL.
  • a step of bending the composite telescopic sheet 60 manufactured by cutting is performed.
  • the bending method is the same as in step S60.
  • the sheet continuum 60C when the sheet continuum 60C is curved, since the sheet continuum 60C is continuous in the transport direction MD, the sheet continuum 60C has a force applied to the inside of the crossing direction CD and the outside of the crossing direction CD. There is a possibility that the seat continuum 60C cannot be bent as intended due to the repeated alternating forces applied to the seat continuum 60C. Therefore, by individually bending the composite telescopic sheet 60, the composite telescopic sheet 60 can be curved as intended.
  • the curved composite telescopic sheet 60 is joined to the absorbent main body continuum 41C in the same manner as in step S70.
  • the composite telescopic sheet 60 curved as intended can be joined to the absorbent body continuum 41C, and the side sheet 62 is the shape of the wearer's body (specifically, the boundary line between the buttocks and the legs). (Filling line)), it becomes easier to arrange.
  • step S11 may be performed after step S12.
  • some steps of the manufacturing method may be omitted.
  • one step of the step of forming the first low stretch region LER1 and the second low stretch region LER2 may be omitted, or both steps may be omitted.
  • step S20 may be omitted.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Botany (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
PCT/JP2020/024138 2019-06-20 2020-06-19 吸収性物品、及び吸収性物品の製造方法 WO2020256103A1 (ja)

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CN115281939A (zh) * 2022-09-06 2022-11-04 智邦（天津）卫生用品科技有限公司 卫生巾制备方法

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JP2010088570A (ja) * 2008-10-06 2010-04-22 Kao Corp 帯状材料の取付方法及び吸収性物品の製造方法
JP2011523887A (ja) * 2008-06-13 2011-08-25 ザ プロクター アンド ギャンブル カンパニー 液体排出物の封じ込めを改善するための弾性的に収縮可能なカフを有する使い捨て吸収性物品
JP2015510838A (ja) * 2012-03-30 2015-04-13 ザ プロクター アンド ギャンブルカンパニー 吸収性物品用レッグカフの製造方法及び製造装置
JP2018511385A (ja) * 2015-03-18 2018-04-26 ザ プロクター アンド ギャンブル カンパニー レッグカフを備える吸収性物品

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JP6495765B2 (ja) * 2015-06-30 2019-04-03 ユニ・チャーム株式会社 使い捨ておむつ
JP6454658B2 (ja) * 2016-03-30 2019-01-16 大王製紙株式会社 使い捨ておむつ
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JP2011523887A (ja) * 2008-06-13 2011-08-25 ザ プロクター アンド ギャンブル カンパニー 液体排出物の封じ込めを改善するための弾性的に収縮可能なカフを有する使い捨て吸収性物品
JP2010088570A (ja) * 2008-10-06 2010-04-22 Kao Corp 帯状材料の取付方法及び吸収性物品の製造方法
JP2015510838A (ja) * 2012-03-30 2015-04-13 ザ プロクター アンド ギャンブルカンパニー 吸収性物品用レッグカフの製造方法及び製造装置
JP2018511385A (ja) * 2015-03-18 2018-04-26 ザ プロクター アンド ギャンブル カンパニー レッグカフを備える吸収性物品

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