WO2008029558A1 - Article absorbant - Google Patents

Article absorbant Download PDF

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Publication number
WO2008029558A1
WO2008029558A1 PCT/JP2007/064477 JP2007064477W WO2008029558A1 WO 2008029558 A1 WO2008029558 A1 WO 2008029558A1 JP 2007064477 W JP2007064477 W JP 2007064477W WO 2008029558 A1 WO2008029558 A1 WO 2008029558A1
Authority
WO
WIPO (PCT)
Prior art keywords
main body
wing
leakage preventing
absorbent
absorbent article
Prior art date
Application number
PCT/JP2007/064477
Other languages
English (en)
Japanese (ja)
Inventor
Hiroyuki Yokomatsu
Hironori Kawasaki
Shinsuke Nagahara
Yasuhiro Yamamoto
Mayumi Kimura
Haruo Sakahashi
Original Assignee
Kao Corporation
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
Priority claimed from JP2006239026A external-priority patent/JP5030510B2/ja
Priority claimed from JP2006277210A external-priority patent/JP5084220B2/ja
Priority claimed from JP2006277209A external-priority patent/JP2008093127A/ja
Priority claimed from JP2006304265A external-priority patent/JP5036279B2/ja
Priority claimed from JP2006312935A external-priority patent/JP5030548B2/ja
Priority claimed from JP2006316906A external-priority patent/JP5030554B2/ja
Application filed by Kao Corporation filed Critical Kao Corporation
Priority to CN200780032694.5A priority Critical patent/CN101516303B/zh
Priority to KR1020097002209A priority patent/KR101383696B1/ko
Publication of WO2008029558A1 publication Critical patent/WO2008029558A1/fr

Links

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
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4756—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins 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
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4752—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being an upstanding barrier
    • A61F13/4753—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being an upstanding barrier the barrier being not integral with the topsheet or backsheet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
    • A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
    • A61F13/4757—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means being located outside the perimeter of the absorbent core
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/476—Sanitary towels, incontinence pads or napkins characterised by encircling the crotch region of the undergarment
    • 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
    • A61F13/56—Supporting or fastening means

Definitions

  • the present invention relates to an absorbent article such as a sanitary napkin, a panty liner (orimono sheet), an incontinence pad, and the like.
  • the present invention also relates to an absorbent article, and more particularly to an absorbent article such as a sanitary napkin with a wing-shaped flap, and a method for producing the same.
  • some absorbent articles such as sanitary napkins are provided with a pair of side leakage preventing portions.
  • a pair of side leak-proof portions are provided on the skin contact surface side of the absorbent main body. It is provided on both sides.
  • areas for suppressing liquid diffusion are formed on both sides in the longitudinal direction on the skin contact surface side of the absorbent article, and in some cases, a three-dimensional wall is formed to prevent liquid from moving laterally. Being! /
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2001-245927
  • a liquid-permeable surface sheet a knock sheet, and an absorbent core sandwiched between the surface sheet and the back sheet.
  • On the surface of the biological napkin there is a main absorption region in the center in the width direction of the entire absorption region composed of the absorption core and the surface sheet, and the outer side of the main absorption region in the width direction is the absorption core and the surface.
  • a groove portion formed in a concave shape with the sheet is provided on the outer side in the width direction further than the groove portion, and a side leakage preventing portion extending in the longitudinal direction of the sanitary napkin is provided, and the surface sheet located in the main absorption region is provided.
  • the sanitary napkin is disclosed in the order of the groove density> side leak-proof part> main absorption region, and the relationship between the fiber density of the surface sheet, the fiber density of the surface sheet in the groove part, and the fiber density of the side leak-proof part.
  • the sanitary napkin has a hollow three-dimensional shape in which the non-woven fabric is folded back and the inner surfaces facing each other are separated from each other. ing.
  • Patent Document 2 Japanese Patent Laid-Open No. 2001-252306 includes an absorbent main body having an absorption layer and a leak-proof layer, is substantially vertically long, and has a pair of side leak-proof portions.
  • the absorbent body It is provided on both sides in the longitudinal direction on the skin contact surface side, and the side leak-proof portion is a non-woven fabric formed of thermoplastic fibers or a non-woven fabric containing thermoplastic fibers, and an elasticity that exerts an elastic contraction force in the vertical direction.
  • a non-woven fabric forming a side leak-proof portion, a rigid region in which concave and convex ridges are formed in which the top and bottom of the wave extend from the base end toward the free end and the wave repeats regularly in the vertical direction.
  • a sanitary napkin is disclosed in which a rigid boundary part in which uneven ridges are discontinuous extends in the middle region between the base end and the free end of the side leakage preventing part. Has been.
  • Patent Document 3 Japanese Patent Publication No. 7-5024378 includes an absorbent main body having an absorption layer and a leak-proof layer, is substantially vertically long, and has a pair of side leak-proof portions. There is disclosed a sanitary napkin that is provided on both sides of the absorbent main body, the side leak-proof portion has a loop shape, and a leak-proof layer extends inside the loop shape.
  • absorbent articles such as sanitary napkins extend outward in the width direction from respective side portions of the absorbent main body having a top sheet, a back sheet, and an absorbent body interposed between both sheets. Some of them have a pair of wings.
  • the absorbent main body is disposed on the upper surface (inner surface) of the crotch portion of the shorts, the wing portion is folded back to the lower surface (outer surface) side of the crotch portion, and the wing portion is The displacement of the absorbent article can be prevented by fixing it to the crotch portion with the displacement stopper provided on it.
  • the absorbent article is coated with both sides of the absorbent body on the skin contact surface side in order to improve the side leakage prevention from both sides of the absorbent body.
  • the wing portion is also provided in the absorbent article provided with such a side leakage preventing portion, for example, the side sheet forming the side leakage preventing portion is extended outward in the width direction of the absorbent main body.
  • Patent Document 4 Japanese Patent Laid-Open No. 2002-272786
  • the side sheet forming the side leakage preventing part and the back sheet of the absorbent main body are each extended outward in the width direction of the absorbent main body, and the wing portion is formed from the laminate of the extension regions of both sheets. Is adopted.
  • a window formed from a laminate of extended regions of the side sheet and the back sheet For example, the lip portion has a high rigidity and poor fit to the body, and the back sheet has a poor touch (softness) due to the presence of the back sheet.
  • Patent Document 4 Japanese Patent Laid-Open No. 2002-272786.
  • a sanitary napkin provided with a wing-shaped flap is widely known.
  • This type of sanitary napkin is formed of an absorbent main body and a pair of wing-shaped flap portions provided on both side edges in the longitudinal direction.
  • the wing-shaped flap in this type of sanitary napkin is provided with a flap adhesive portion on one side, and when the napkin is used, the edge of the crotch in underwear such as shorts (hereinafter also simply referred to as a short) It is bent along the part and fixed to the outer surface of the underwear through the flap adhesive part.
  • Patent Document 4 Japanese Patent Laid-Open No. 2002-272786
  • an absorber is interposed between the liquid-permeable top sheet and the liquid-impervious back sheet, and one or more protruding sideways for fixing to the underwear on both sides.
  • a wing-shaped flap is formed, and the liquid-impermeable back sheet has a sheet edge at a position slightly beyond the side edge of the absorbent body on both sides of the absorbent article, and the surface of the absorbent article extends longitudinally on both sides.
  • a side nonwoven fabric is provided along the direction and over substantially the entire length of the absorbent article, and a part of the side nonwoven fabric is extended to the side to form a wing-shaped flap portion.
  • a flap adhesive part is formed on the non-skin contact surface side! /, And an absorbent article is disclosed! /.
  • the side nonwoven fabric is made of an elastic nonwoven fabric, it can sufficiently follow the movement of the body even if it is fixed to the underwear by the wing-shaped flap.
  • Patent Document 5 Japanese Utility Model Publication No. 5-65319 discloses a liquid-permeable surface sheet and an impermeable back.
  • An absorbent main body comprising a face sheet and a liquid absorbent absorber interposed between the two sheets, and a pair of wing-shaped flap portions extending from both side edge forces in the longitudinal direction of the absorbent main body,
  • a flap adhesive portion is provided on the non-skin contact surface side of the wing-shaped flap portion, and the wing-shaped flap portion is formed between the back sheet, the top sheet, and both sheets extending from the side edge of the absorbent main body.
  • a sanitary napkin formed from a reinforcing layer interposed between the two is disclosed. According to the sanitary napkin described in Patent Document 5, the wing-shaped flap portions are prevented from swaying due to the low rigidity of the wing-shaped flap portions, and the flap adhesive portions are prevented from adhering to each other.
  • Patent Document 1 Japanese Patent Laid-Open No. 2001-245927
  • Patent Document 2 Japanese Patent Laid-Open No. 2001-252306
  • Patent Document 3 Japanese Patent Publication No. 7-502438
  • Patent Document 4 Japanese Patent Laid-Open No. 2002-272786
  • Patent Document 5 Japanese Utility Model Publication No. 5-65319
  • the hollow three-dimensional shape is crushed by individual packaging or when the napkin is worn, and there is a risk of liquid leakage.
  • the shape of the side leak-proof part has been devised to improve flexibility, body following ability and wearing feeling.
  • the back sheet and the side sheet are joined by a linear heat-seal line along the longitudinal direction at the outer position in the width direction of the absorbent body. Yes. Therefore, the wing part is easily broken due to the damage caused by the heat seal wire.
  • the linear heat-sealed wire is likely to be a folding guide wire, the folding position of the wing part is limited, and the wing part is difficult to be freely wound around the crotch part of the shorts.
  • the rigidity of the heat seal line increases the longitudinal rigidity of the absorbent body, making it difficult for the absorbent body to follow the body when worn.
  • the wing part is composed of a single layer of a side sheet, the wing part is stretched and when the absorbent article in an individual packaging state is taken out from the packaging material, It is difficult to peel off the wing from the covering sheet covering the slip stopper provided in the wing.
  • the rigidity of the wing part is low, the wing part is not easily folded when mounted on shorts.
  • the strength near the folded part of the wing part is low, so the wing part breaks near the base end part of the wing part! Part of the part may remain attached to the shorts.
  • the wing-shaped flap portion is formed from a single nonwoven fabric, the wing-shaped flap is formed from underwear such as shorts that is fixed via the flap adhesive portion. When the part is detached, the wing-shaped flap part may be broken.
  • the surface on the non-skin contact surface side of the wing-shaped flap is formed from an impermeable back sheet, and the back sheet is formed from a resin film! /, In some cases, the wearing feeling and operability may be inferior.
  • the present invention (first invention) relates to an absorbent article having a side leak-proof portion that is excellent in flexibility and body followability, and has a high wearing feeling and leak-proof property.
  • the present invention (first invention) is to provide a packaging structure of an absorbent article suitable for the absorbent article described above.
  • the present invention (second invention) is to provide an absorbent article having a side leak-proof portion which is excellent in body followability and wearing feeling and has a high leak-proof property, and a method for producing the same.
  • the present invention (third invention) is to provide an absorbent article having a side leakproof portion excellent in wearing feeling and leakproof property.
  • an object of the present invention is to have an absorbent main body, a wing portion, and a side leakage prevention portion, and the wing portion is formed from a side sheet that forms a side leakage prevention portion.
  • absorbent articles to provide an absorbent article in which the wing part is easily wrapped around the crotch part of the shorts, and the absorbent main body easily follows the body when worn immediately after the wing part is difficult to break.
  • an object of the present invention is to provide an absorbent article having a predetermined strength and having a wing-shaped flap portion excellent in wearing feeling and operability, and a method for producing the same.
  • an object of the present invention is an absorbent article having a wing portion and a side leakage preventing portion, wherein the wing portion is formed of a side sheet forming the side leakage preventing portion. The wing has good fit to the body and feels! /, And the wing is peeled off from the covering sheet covering the slip prevention agent. To provide an absorbent article that does not easily break near the end.
  • the absorbent article of the present invention has an absorbent layer and a leak-proof layer, is provided with a substantially vertically long absorbent main body, and a skin contact surface side of the absorbent main body by a pair of side leak-proof portions. Both sides in the longitudinal direction are covered.
  • Each of the pair of side leakage preventing parts is configured to include opposing side leakage preventing part forming sheets, and an embossed part is formed on at least one of the opposing side leakage preventing part forming sheets.
  • the absorbent article of the first invention of the present invention is the above-described absorbent article of the present invention, wherein the opposing side leak-proof portion forming sheets are inward in the width direction of the absorbent main body.
  • the side leakage preventing portion forming sheet is formed by being folded outward in the width direction so as to have a folded end portion.
  • a large number of the embossed portions are provided on the outer side in the width direction of the side leakage preventing portion forming sheet.
  • the side leakage preventing portion forming sheets are bonded to each other and have a non-bonded region.
  • the absorbent article packaging structure of the present invention comprises the above-described absorbent article of the first invention and a packaging material in which the inner surface of the absorbent article is individually peeled, and the non-absorbent main body is non-coated.
  • a main body adhesive portion is provided on the skin contact surface side, and the main body adhesive portion is detachably adhered to the packaging material so as to contact the inner surface of the packaging material.
  • the absorbent article and the packaging material are sequentially folded and folded two or more times from one end side in the longitudinal direction of the absorbent article to the skin contact surface side as an inner side. Thus, a plurality of broken lines are formed in the absorbent article.
  • the width of the non-joining region between the two folding lines located closest to the center in the longitudinal direction of the excretory part-facing region in the absorbent main body is the front and rear end portions of the absorbent main body, Is the closest to each part! / It is larger than the width of the non-bonded region between the line.
  • the packaging structure of the absorbent article of the present invention comprises the absorbent article of the first invention described above and a packaging material whose inner surface is individually peeled, and the non-absorbent body is non-coated.
  • a main body adhesive portion is provided on the skin contact surface side, and the main body adhesive portion is detachably adhered to the packaging material so as to contact the inner surface of the packaging material.
  • a middle-high portion extending between the front and rear end portions of the excretory part-facing region of the absorbent main body is formed.
  • the absorbent article and the packaging material are bent and folded one or more times sequentially from one edge side in the longitudinal direction of the absorbent article to the skin contact surface side as an inner side.
  • the packaging structure of the absorbent article is formed so that a fold line formed by the bending extends over the middle and high portions.
  • the absorbent article of the second invention of the present invention is the above-described absorbent article of the present invention, wherein the opposing side leakage preventing portion forming sheets are inward in the width direction of the absorbent main body.
  • a plurality of side leakage preventing part forming sheets are formed so as to overlap with each other.
  • the end portion has at least a non-joined portion at the sheet end portion of each of the side leakage preventing portion forming sheets.
  • a large number of the embossed portions are formed on the outer side in the width direction of the side leakage preventing portion.
  • the present invention is a method for producing an absorbent article according to the second invention described above, comprising the following steps.
  • Each of the side leakage preventing portion forming sheet continuums subjected to the hot air treatment is overlapped with one side edge in the longitudinal direction substantially coincided with each other, and the other side of the side leakage preventing portion forming sheet continuum thus overlapped is overlapped.
  • An embossing process in which a large number of embossed portions are formed on the side edge side to produce a side leakage preventing portion continuous member.
  • a pair of the side leakage preventing part continuous members are positioned on both sides in the longitudinal direction of the separately prepared absorbent body continuous body, and the side edges are positioned inward in the width direction of the absorbent body continuous body.
  • the joining process which joins so that it may make, and produces an absorbent article continuous body.
  • the present invention is a method for producing an absorbent article according to the second invention described above, comprising the following steps.
  • Hot air treatment or king that blows hot air on the continuous sheet of the side leakage preventing part forming sheet that has been fed out
  • a folding step in which one side portion in the longitudinal direction of the hot air-treated side leakage preventing portion forming sheet continuous body is folded in a direction orthogonal to the longitudinal direction to be folded in two.
  • a plurality of embossed parts are formed on the side opposite to the folded end formed by folding in two!
  • the pair of cut side leakage preventing part continuous members are positioned on both sides in the longitudinal direction of the separately prepared absorbent main body continuity, and the folded ends are positioned inward in the width direction of the absorbent main body continuous body. Joining process which joins so that an absorbent article continuous body may be produced.
  • the present invention is a method for manufacturing an absorbent article according to the second invention described above, and includes the following steps.
  • Each of the side leakage preventing part forming sheet continuums that have been fed out is superposed with one side edge of the longitudinal direction substantially matching each other, and the other side of the side leakage preventing part forming sheet continuum that is overlapped.
  • An embossing process in which a large number of embossed portions are formed on the side edge side to produce a side leakage preventing portion continuous member.
  • a hot air treatment step of blowing hot air onto the side leakage preventing part continuous member The pair of side leakage preventing part continuous members treated with the hot air are separately formed on both sides in the longitudinal direction of the absorbent main body continuous body, and the side edges are positioned inward in the width direction of the absorbent main body continuous body.
  • the joining process which joins so that it may be made and produces an absorbent article continuous body.
  • the present invention is also a method for producing an absorbent article according to the second invention described above, comprising the following steps.
  • a plurality of embossed portions are formed on the end side opposite to the folded end portion formed by folding the side leakage preventing portion forming sheet continuity on the folded side! Side leakage prevention part Embossing process to produce a continuous member.
  • a hot air treatment step of blowing hot air onto the cut side leakage preventing part continuous member is provided.
  • a pair of the side leakage preventive continuous members subjected to the hot air treatment are separately prepared on both sides in the longitudinal direction of the absorbent main body continuous body, and the folded end portions are inward in the width direction of the absorbent main body continuous body.
  • the joining process which joins so that it may be located in, and produces an absorbent article continuous body.
  • the absorbent article of the third invention of the present invention is the above-described absorbent article of the present invention, wherein the opposing side leakage preventing portion forming sheets are inward in the width direction of the absorbent main body.
  • the side leakage preventing portion forming sheet is formed by being folded outward in the width direction so as to have a folded end portion.
  • An intermediate layer is disposed between the folded sheet for forming the side leakage preventing parts.
  • the intermediate layer forms at least the skin contact surface side of the side leakage prevention portion.
  • the side leakage prevention portion formation that forms the upper layer or the non-skin contact surface side of the side leakage prevention portion forming sheet portion. It is joined to the lower layer composed of the sheet portion.
  • the absorbent article of the fourth invention of the present invention includes an absorbent body having a top sheet, a back sheet, and an absorbent body interposed between both sheets, and both side portions of the absorbent body.
  • a pair of wing portions extending outward in the width direction and a pair of side leakage preventing portions covering both side portions on the skin contact surface side of the absorbent main body are provided.
  • the absorptive main body is located in the longitudinal direction with an excretory part facing part having the wings on both sides, a front part positioned in front of the excretory part facing part, and behind the excretory part facing part. It is divided into a rear part.
  • the side leak-proof portion is formed of a water-repellent side sheet, and the side sheet extends from both side portions of the absorbent main body to form all or part of the wing portion.
  • the side sheet and the back sheet are joined by a heat seal line in a region outward in the width direction from the absorber.
  • the heat seal line extends from the front end side of the absorbent main body to the vicinity of the base of the front side of the wing part, and the rear base of the wing part from the rear end side of the absorbent main body. Although it extends over the vicinity, it is not provided between the bases of the both ends, or is provided discontinuously in the longitudinal direction.
  • the absorbent article of the fifth invention of the present invention comprises a substantially longitudinal absorbent body having an absorbent layer and a leak-proof layer, from both side edges in the longitudinal direction of the absorbent body. It has a pair of extending wing-shaped flaps. Each of the pair of wing-shaped flap portions is formed so as to have a layer structure in the thickness direction from the nonwoven fabric, and the nonwoven fabric is located on the outer side in the width direction of the absorbent main body than the base portion. The portion having a large number of layers is overlapped with the flap adhesive portion formed on the non-skin contact surface side.
  • the present invention is the method for producing an absorbent article according to the fifth invention described above, and includes the following steps.
  • the folded nonwoven fabric continuum includes a portion where the both side portions overlap, An embossing step of forming a long member by forming a large number of embossed portions with a predetermined width in a portion excluding both side portions of the folded nonwoven fabric continuous body.
  • An application step in which an adhesive is continuously applied to the portion of one surface of the elongated member where the both side portions overlap.
  • the elongate member coated with the adhesive is cut in the longitudinal direction so as to swing in the width direction and within the predetermined width where the embossed portion is formed, and a wing-shaped flap portion
  • a pair of the side leakage preventing part continuous members are separately formed on both sides of the skin contact surface side in the longitudinal direction on the skin contact surface side of the absorbent main body continuous body, and the wing-shaped flap part forming portions are arranged in the longitudinal direction of the absorbent main body continuous body. Joining the absorbent body continuum to produce an absorbent article continuum so as to extend from both side edges in the direction and the applied adhesive faces the non-skin contact surface side .
  • the absorbent article of the sixth invention of the present invention includes an absorbent main body including a top sheet, a back sheet, and an absorbent body interposed between both sheets, and both side portions of the absorbent main body.
  • a pair of wing portions extending outward in the width direction and a pair of side leakage preventing portions covering both side portions on the skin contact surface side of the absorbent main body are provided.
  • the wing portion includes an upper wing layer and a lower wing layer.
  • the side leak-proof portion is made of a water-repellent side sheet, and the side sheet extends from both side portions of the absorbent main body to form the wing upper layer.
  • the back sheet extends from both sides of the absorbent main body to form the wing lower layer.
  • the wing portion has a wing base end portion, which is a base end portion thereof, formed of a laminate of the wing upper layer and the wing lower layer, and a wing tip portion force that is a portion other than the wing base portion.
  • FIG. 1 is a plan view showing a first embodiment of a sanitary napkin as an absorbent article of the present invention (first invention).
  • FIG. 2 is a sectional view taken along line XX in FIG.
  • FIG. 3 is an enlarged cross-sectional view showing a part of the non-joining region of the side leakage preventing part in the sanitary napkin shown in FIG. 1.
  • FIG. 4 is a plan view showing a part P of the joint region of the side leakage preventing part in the sanitary napkin of FIG. 1 in an enlarged manner.
  • FIG. 5 is a plan view showing a second embodiment of a sanitary napkin as an absorbent article of the present invention (first invention).
  • FIG. 6 (a) is a perspective view of a side leak-proof portion forming sheet in the sanitary napkin of FIG.
  • FIG. 6 (b) is a plan view of the side leak-proof portion forming sheet in the sanitary napkin of FIG.
  • FIG. 7 is a cross-sectional view taken along line Y—Y in FIG.
  • FIG. 8 is a partially broken perspective view showing a side leak-proof portion of the sanitary napkin of FIG.
  • FIG. 9 is an enlarged plan view showing a part Q of the joining region of the side leakage preventing part in the sanitary napkin of FIG.
  • FIG. 10 is a perspective view showing a first embodiment of the packaging structure for sanitary napkins of the present invention (first invention).
  • FIG. 11 is a cross-sectional view taken along the line ZZ of FIG.
  • FIG. 12 is a plan view (development of the packaging structure) showing a state in which the sanitary napkin of FIG. 10 is in contact with the packaging material.
  • FIG. 13 is a plan view corresponding to FIG. 12 and showing a second embodiment of the sanitary napkin packaging structure of the present invention (first invention).
  • FIG. 14 is a plan view showing a first embodiment of a sanitary napkin as an absorbent article of the present invention (second invention).
  • FIG. 15 is a cross-sectional view taken along line XI-XI in FIG.
  • FIG. 16 is a cross-sectional view taken along line X 2 -X 2 in FIG.
  • FIG. 17 is a cross-sectional view corresponding to FIG. 16, showing a second embodiment of a sanitary napkin as an absorbent article of the present invention (second invention).
  • FIG. 18 is a cross-sectional view taken along line X3-X3 in FIG.
  • FIG. 19 is a cross-sectional view taken along line X 4 -X 4 of FIG.
  • FIG. 20 is a cross-sectional view corresponding to FIG. 16, showing a third embodiment of a sanitary napkin as an absorbent article of the present invention (second invention).
  • FIG. 21 (a) is an explanatory view of the first embodiment of the method for producing a preferred / absorbent article of the present invention (second invention).
  • FIG. 21 (b) is an explanatory view of the first embodiment of the method for producing a preferred / absorbent article of the present invention (second invention).
  • FIG. 21 (c) is an explanatory view of the first embodiment of the method for producing a preferred / absorbent article of the present invention (second invention).
  • FIG. 22 is an explanatory diagram of the hot air treatment device shown in FIG. 21 (c).
  • FIG. 23 (a) is an explanatory view of a second embodiment of the preferred method for producing an absorbent article of the present invention (second invention).
  • FIG. 23 (b) is an explanatory view of the second embodiment of the preferred method for producing an absorbent article of the present invention (second invention).
  • FIG. 23 (c) is an explanatory view of a second embodiment of the preferable method for producing an absorbent article of the present invention (second invention).
  • FIG. 24 is a perspective view showing one embodiment of a sanitary napkin as an absorbent article according to the present invention (third invention).
  • FIG. 25 is a sectional view taken along line XX in FIG.
  • FIG. 26 is an enlarged plan view showing a side leakage preventing part and a wing part in the excretory part facing part of the sanitary napkin shown in FIG. 24.
  • FIG. 27 is a cross-sectional view corresponding to FIG. 25, showing a modification of the absorbent article of the present invention (third invention).
  • FIG. 28 is a plan view showing a sanitary napkin as a first embodiment of the absorbent article of the present invention (fourth invention).
  • FIG. 29 is a bottom view showing the sanitary napkin shown in FIG. 28.
  • FIG. 30 is a cross-sectional view taken along line III-III shown in FIG.
  • FIG. 31 is a cross-sectional view taken along line IV-IV shown in FIG.
  • FIG. 32 is a partially enlarged plan view showing the wing portion and the excretory portion facing portion in the vicinity of the sanitary napkin shown in FIG. 28.
  • FIG. 33 is a perspective view (with underwear omitted) showing a state in which the sanitary napkin shown in FIG. 28 is attached.
  • FIG. 34 is a partially enlarged plan view (corresponding to FIG. 32) showing the wing part and the excretory part opposing part in the vicinity thereof in a modification of the sanitary napkin of the first embodiment.
  • FIG. 35 is a partially enlarged plan view showing the wing part and the excretory part facing part in the vicinity thereof in the sanitary napkin as the second embodiment of the absorbent article of the present invention (fourth invention) (FIG. 3). 2 correspondence diagram).
  • FIG. 36 (a) is a partially enlarged plan view (corresponding to FIG. 32) showing the wing portion and the excretory portion facing portion in the vicinity thereof in a modification of the sanitary napkin of the second embodiment. .
  • FIG. 36 (b) is a cross-sectional view taken along the line BB in FIG. 36 (a) (corresponding to FIG. 30).
  • FIG. 37 is a partially enlarged plan view showing the wing part and the excretory part facing part in the vicinity of the sanitary napkin as the third embodiment of the absorbent article of the present invention (fourth invention) (FIG. 3).
  • FIG. 38 is a partially enlarged plan view (corresponding to FIG. 32) showing the wing part and the excretory part opposing part in the vicinity thereof in the first modification of the sanitary napkin of the third embodiment.
  • FIG. 39 is a partially enlarged plan view (corresponding to FIG. 32) showing the wing part and the excretory part facing part in the vicinity thereof in the second modification of the sanitary napkin of the third embodiment.
  • FIG. 40 is a partially enlarged plan view showing the wing part and the excretory part facing part in the vicinity of the sanitary napkin as the fourth embodiment of the absorbent article of the present invention (fourth invention) (FIG. 3).
  • FIG. 41 is a plan view showing a first embodiment of a sanitary napkin as an absorbent article according to the present invention (fifth invention).
  • FIG. 42 is an enlarged cross-sectional view taken along line XX in FIG. 41.
  • FIG. 43 is an enlarged plan view showing a joining line in the side leakage preventing part of the sanitary napkin shown in FIG. 41.
  • FIG. 44 shows a second embodiment of the sanitary napkin as the absorbent article of the present invention (the fifth invention). It is a top view which shows a form.
  • FIG. 45 is an enlarged sectional view taken along line Y—Y in FIG. 44.
  • FIG. 46 (a) is an illustration of the first embodiment of the preferred embodiment of the present invention (fifth invention) and the method for producing an absorbent article.
  • FIG. 46 (b) is an explanatory diagram of the first embodiment of the production method of the absorbent article according to the present invention (fifth invention)!
  • FIG. 46 (c) is an explanatory diagram of the first embodiment of the method for producing a preferred / absorbent article of the present invention (fifth invention).
  • FIG. 46 (d) is an illustration of the first embodiment of the preferred embodiment of the present invention (the fifth invention) and the method for producing an absorbent article.
  • FIG. 47 (a) is a view for further explaining the preferred method for producing an absorbent article of the present invention (fifth invention) in FIG.
  • FIG. 47 (b) is a diagram for further explaining the preferred method for producing an absorbent article of the present invention (fifth invention) in FIG.
  • FIG. 48 is a plan view showing a sanitary napkin as the first embodiment of the absorbent article of the present invention (sixth invention).
  • FIG. 49 is a bottom view showing the sanitary napkin shown in FIG. 48.
  • FIG. 50 is a cross-sectional view taken along line III-III shown in FIG.
  • FIG. 51 is a cross-sectional view taken along the line IV-IV shown in FIG. 48.
  • FIG. 52 is a partially enlarged plan view showing the wing portion and the excretory portion facing portion in the vicinity thereof in the sanitary napkin shown in FIG. 48.
  • FIG. 53 is a perspective view showing an attached state of the sanitary napkin shown in FIG. 48 (underwear is omitted).
  • FIG. 54 is a partially enlarged plan view showing the wing part and the excretory part facing part in the vicinity of the sanitary napkin as the second embodiment of the absorbent article of the present invention (sixth invention) (FIG. 5). 2 correspondence diagram).
  • FIG. 55 is a partially enlarged plan view showing the wing part and the excretory part facing part in the vicinity of the sanitary napkin as the third embodiment of the absorbent article of the present invention (sixth invention) (FIG. 5). 2 correspondence diagram).
  • FIG. 56 is a partially enlarged plan view showing the wing part and the excretory part opposing part in the vicinity thereof in the sanitary napkin as the fourth embodiment of the absorbent article of the present invention (sixth invention) (FIG. 5). 2 correspondence diagram).
  • the absorbent article 1 of the first embodiment is a sanitary napkin, and has a liquid-retaining absorbent layer 11 and a liquid-impermeable leak-proof layer 12 as shown in FIGS.
  • the substantially longitudinally long absorbent main body 10 is provided, and the pair of side leakage preventing portions 5 and 5 cover both sides in the longitudinal direction of the absorbent main body 10 on the skin contact surface side.
  • the absorbent layer 11 in the napkin 1 is composed of a liquid-permeable surface sheet 2 and a liquid-retaining absorbent body 4, and the leak-proof layer 12 is composed of a back sheet 3 having air permeability and liquid impermeability.
  • the pair of side leakage preventing parts 5 and 5 are configured to include the opposite side leakage preventing part forming sheets 50, which are opposed to each other.
  • Embossed portions 52 are formed on both side leakage preventing portion forming sheets 50.
  • the side leak-proof portion forming sheet 50 opposite to the width direction of the absorbent main body 10 is arranged such that the opposite side leak-proof portion forming sheet 50 has a folded end portion 51 inward in the width direction of the absorbent main body 10. It is folded back.
  • the side leak-proof portion forming sheets 50 are provided on the outer side of the absorbent main body 10 in the width direction of the side leak-proof portion forming sheet 50, and each of the pair of side leak-proof portions 5, 5 is provided. In the vicinity of the folded-back end portion 51, the side leak-proof portion forming sheets 50 are bonded to each other and have the non-bonded region 5A.
  • the sanitary napkin 1 (hereinafter also simply referred to as napkin) of the first embodiment will be described in further detail.
  • the napkin 1 is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the absorbent main body 10 (hereinafter also referred to as the main body longitudinal direction).
  • Each of the top sheet 2 and the back sheet 3 is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • the absorbent body 4 is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body, and is sandwiched and fixed between the top sheet 2 and the back sheet 3.
  • the width of the top sheet 2 is substantially the same as the width of the absorber 4, and the back sheet It is formed narrower than the width of the route 3.
  • the top sheet 2 covers the entire surface of the absorbent body 4 on the skin contact surface side.
  • the top sheet 2 and the back sheet 3 are respectively extended from both ends in the longitudinal direction of the absorbent body 4, and the extended portions are bonded to each other by a known bonding method such as heat sealing or bonding with an adhesive.
  • the napkin 1 has a front part A in the longitudinal direction and an excretory part facing part B that is a central region in the longitudinal direction (a confronting excretion part that is mainly disposed facing the liquid excretion part of the wearer It is divided into a part having an area in the center in the width direction) and a rear part C (a part mainly facing the wearer's buttocks).
  • the excretory part facing region is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body.
  • the front part A is the part located on the foremost side of the wearer when wearing the napkin, and the rear part C is the part located on the most rear side of the wearer.
  • Each of the pair of side leakage preventing parts 5, 5 in the napkin 1 of the first embodiment will be further described.
  • Each of the pair of side leakage preventing parts 5, 5 is formed in a vertically long shape as shown in FIG.
  • the longitudinal direction is coincident with the longitudinal direction of the main body.
  • Each of the pair of side leak-proof portions 5 and 5 has substantially the same width, and is arranged between both end portions in the longitudinal direction of the main body.
  • the side leakage preventing part 5 is joined to the back sheet 3 by a seal part 8 at the side edge of the absorbent main body 10.
  • the side leakage prevention part 5 extends from the side edge of the side leakage prevention part forming sheet 50 force absorbent main body 10 toward the inside of the width direction of the absorbent main body 10 (hereinafter also simply referred to as the main body width direction). After being folded outward in the main body width direction toward the absorption layer 11 so as to form an inner edge portion as the folded end portion 51, it extends outward in the main body width direction.
  • the front end portion of the folded side leakage preventing portion forming sheet 50 is joined to the back surface sheet 3 again at the seal portion 8.
  • the seal portion 8 can be formed by a known joining means such as heat sealing or adhesion with an adhesive.
  • the side leak-proof portion forming sheet 50 is formed from a nonwoven fabric.
  • the nonwoven fabric forming the side leak-proof portion forming sheet 50 is provided with a number of recesses 52 a, 52 a.
  • the individual recesses 52a are discontinuously formed in a circular shape in plan view. In the recess 52a, the nonwoven fabric fibers are consolidated and the density is increased.
  • the recess 52a is formed of a non-woven fabric that extends from the outer surface 50c side of the side leak-proof portion 5 toward the inner surfaces 50a, 50b.
  • the recess 52a has an opening on the outer surface 50c of the side leak-proof portion 5.
  • Each recess 52a preferably has the same dimensions.
  • the outer surface 50c of the side leak-proof portion 5 is a surface on the skin contact surface side of the side leak-proof portion 5, and the inner surfaces 50a and 50b of the side leak-proof portion 5 are the folded back sides. These are the opposite surfaces of the leak-proof portion forming sheet 50. Note that a part of the outer surface 50c of the side leak-proof portion 5 is opposed to the top sheet 2 because the side leak-proof portion forming sheet 50 is folded back.
  • a force S including a cylindrical shape or a truncated cone shape in which the diameter of the recess 52a gradually increases from the outer surface 50c side toward the inner surface 5 Oa, 50b side can be cited.
  • the diameter of the recess 52a gradually decreases from the outer surface 50c side to the inner surfaces 50a, 50b! /
  • the inverted frustum shape stabilizes the three-dimensional shape of the recess 52a.
  • the recess 52a has an inverted truncated cone shape.
  • the recess 52a includes a bottom surface portion 56a and a wall portion 57 provided continuously around the bottom surface portion 56a.
  • the outer surface of the bottom surface portion 56a is a part of the inner surfaces 50a and 50b of the side leakage preventing portion 5.
  • the opening diameter of the outer surface 50c of the side leak-proof portion 5 in the concave portion 52a is 1 to 8 mm, particularly 1.5 to 6 mm, in order to obtain a good touch and cushioning property of the side leak-proof portion 5. preferable.
  • the bottom surface portion 56a of the recess 52a has a circular shape in plan view, is formed in a flat plate shape, and is formed into a film.
  • the portion where the bottom surface portion 56a is formed into a film is 20 to 90%, especially 30 to 80%, relative to the area of the bottom surface portion 56a in plan view. It is preferable in obtaining.
  • the bottom surface portion 56a is all formed into a film.
  • the film formation is a state in which at least the resin having the lowest melting point among the constituent resins of the constituent fibers of the nonwoven fabric is softened (preferably melted and solidified), and the constituent fibers are in close contact with the film. In the filmed part, the fiber shape is almost lost.
  • the bottom surface portion 56a formed into a film is thinner and denser than the portion of the recess 52a that is not formed into a film, and the surface thereof is smooth.
  • the non-embossed portion and the non-recessed non-woven fabric of the side leak-proof portion 5 are not formed into a film that is not embossed, so that they have a soft texture and the level difference due to unevenness is reduced. Good point.
  • the outer surface of the side leak-proof part 5 that directly touches the skin of the napkin wearer 5 is formed from the non-embossed part of the nonwoven fabric, so the touch is good.
  • each of the pair of side leakage preventing portions 5 and 5 has an inner surface 50a, 50b facing each other of the side leakage preventing portion forming sheet 50 in the vicinity of the folded end portion 51. It has a non-bonded region 5A, and the inner surfaces 50a, 50b facing each other are bonded to each other at the outer portion in the width direction of the main body with respect to the non-bonded region 5A. It has area 5B.
  • the non-joining region 5A is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body.
  • the non-joining region 5A has a predetermined width and is formed between both end portions in the longitudinal direction of the side leakage preventing portion 5.
  • the width of the non-joining area 5A in the excretory part facing part B is formed larger than the widths in the front part A and the rear part C.
  • the widths of the front part A and the rear part C are substantially the same.
  • the width of the non-joining region 5A is the length of the non-joining region 5A in the body width direction.
  • the position of the wide portion in the non-joint region 5A in the body length direction is the force formed to coincide with the excretory portion facing portion B.
  • the wide portion is facing the excretory portion It may be formed to extend from the excretory part facing part B toward the front part A, as long as it is formed so as to include the part B. It may be formed to extend, or may be formed to extend from the excretory part facing part B toward the front part A and the rear part C, respectively.
  • the opposing inner surfaces 50a, 50b of the side leakage preventing portion forming sheet 50 are at least partially separated from each other, and the side leakage preventing portion 5 is a hollow portion.
  • the It has good cushioning properties when wearing a napkin.
  • the side leakage preventing portion forming sheet 50 is provided with a large number of recessed portions 52a, 52a ... separated by embossing, and the side leakage preventing portion forming sheet folded back.
  • a protruding portion from which a part of the side leakage preventing portion forming sheet 50 protrudes is formed on the opposite inner surfaces 50a, 50b side of 50.
  • the bottom surface portion 56a protrudes to the opposite inner surfaces 50a, 50b side of the folded side leakage preventing portion forming sheet 50, and the protruding portion is a bottom surface.
  • the side leak-proof portion forming sheet 50 In a state where the side leak-proof portion forming sheet 50 is spread out in a planar shape, a large number of the spaced-apart concave portions 52a, 52a, ... are formed so as to be in line-symmetrical positions with respect to the folded end portion 51. It is preferable that At least when the inner surfaces 50a, 50b of the side leakage preventing portion forming sheets 50 facing each other are brought close to each other, the recesses 52a, 52a,... Are arranged so that the bottom surfaces 56a of the recesses 52a are partially in contact with each other. It is preferable.
  • the concave portion 56a is formed in the non-joining region 5A as described above, the side leakage preventing portion 5 is pressed against the skin of the wearer when the napkin is worn, and the opposite side leakage preventing portion forming sheet 5 is opposed.
  • the bottom surface portion 56a of the recess 52a is in contact with each other as shown in FIG.
  • the outer surface of the bottom surface portion 56a is flat and the bottom surface portions 56a are in contact with each other, the bottom surface portions 56a have a relatively large contact area. In this case, it is preferable that substantially the whole is overlapped. In this case, a pair of inverted truncated cone shapes are in contact with each other at the bottom surfaces (the bottom surfaces having smaller diameters).
  • the non-joining region 5A of the side leak-proof portion 5 having the above-described configuration is bulky and has a cushioning property and an excellent wearing feeling even when the napkin is worn, and also has excellent three-dimensional shape stability. .
  • the width of the non-joining area 5A in the excretion part facing part B is formed wider than the width of the non-joining area 5A in the front part A and the rear part. Is formed wider so that cushioning and leakage prevention are improved.
  • the side leak-proof portion forming sheet 50 is folded and the side leak-proof portion 5 is formed, the side leak-proof portion 5 may be folded back from the original folding position.
  • the displacement force in the body width direction of the actual folding position is less than half of the diameter of the bottom surface part 56a with respect to the original folding position, at least partially. It is possible to obtain a state where 56a are in contact with each other.
  • the preferable diameter of the bottom surface portion 56a is a force depending on the processing accuracy of the manufacturing process. Usually, it is in the following range.
  • the diameter of the bottom surface portion 56a of the recess 52a is preferably 0.5 to 7 mm, particularly preferably! To 5 mm.
  • the ratio of the bottom surface portions 56a overlapping each other is 10 to 90%, particularly 20 to 80% of the area of the bottom surface portion 56a in plan view. Preferable for obtaining stability.
  • the interval between the recesses 52a at the closest distance (for example, the interval between the centers) is in the longitudinal direction of the main body; ⁇ 10mm, especially 2-7mm, in the body width direction; ⁇ 10 mm, especially 2 to 7 mm is preferable for the same reason.
  • the distance between the centers may not be in the longitudinal direction and width direction, so the longitudinal direction and width direction of the main body are virtually set as the longitudinal direction line and the width direction line connecting the embosses. In some cases, the distance between the imaginary line and the center of the embossed portion 52a at the closest distance may be obtained.
  • One end portion force in the width direction of the main body in the non-joining region 5A is a folded end portion 51 as an inner edge portion.
  • the folded end 51 is formed by folding the side leak-proof portion forming sheet 50 at least on both sides of the excretory portion-facing region of the absorbent main body 10, that is, in the excretory portion-facing portion B so as not to be folded. Being! /, I like to be! /
  • the “folding fold” means that a straight folding fold where two surfaces intersect is not formed in the folded end portion 51.
  • the side leakage preventing portion is formed. This means that the folded end 51 is not formed by folding the sheet 50 in half so as to have a predetermined angle.
  • the folded end 51 described above has a rounded shape and softly touches the skin of the napkin wearer, so the side leak-proof portion 5 has excellent fit. ing.
  • the joining region 5B is the outer portion of the side leakage preventing portion 5.
  • the joining region 5B is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body.
  • the joining region 5B has a predetermined width and is formed between both end portions in the longitudinal direction of the side leakage preventing portion 5.
  • the joining region 5B is a portion excluding the non-joining region 5A of the side leakage preventing portion 5 and is indicated by hatching in FIG.
  • the width of the joining region 5B in the excretory part facing part B is formed smaller than the widths in the front part A and the rear part C.
  • the widths at the front part A and the rear part C are substantially the same.
  • the width of the bonding region 5B is the length of the bonding region 5B in the main body width direction.
  • the side leak-proof portion forming sheet 50 has a large number of embossed portions 52, 52 as shown in FIG. ⁇
  • the embossed portions 52, 52,... are respectively formed in the recessed portion 52a and the non-recessed portion of the side leakage preventing portion forming sheet 50 in the joining region 5B.
  • the embossed portions 52 in the joining region 5B are arranged in a so-called staggered pattern, and each embossed portion 52 is formed in a discontinuous shape in a circular shape in plan view. Has been.
  • the diameter of the embossed portion 52 is smaller than the diameter of the concave portion 52a.
  • the diameter of the side leakage preventing portion 5 is 0.;! ⁇ 5mm, particularly 0.3-3mm. It is preferable from the viewpoints of touch, flexibility and strength.
  • the distance between the embossed parts 52 at the closest distance is 1 to 5 mm, especially 2 to 4 mm in the longitudinal direction of the main body “ ⁇ ”. ! ⁇ 5 mm, particularly 2 to 4 mm. Force is preferable from the same viewpoint.
  • the side leak-proof portion 5 will be further described. It is preferable that the side leak-proof portion 5 is not joined to the inner side partial force in the width direction of the main body with respect to the seal portion 8 and the surface sheet 2. However, at both ends in the longitudinal direction of the main body, it is preferable that the portion between the folded end portion 51 and the seal portion 8 is joined to the topsheet 2 in the width direction of the main body or in the vicinity of the folded end portion 51.
  • the side leak-proof portion 5 When the side leak-proof portion 5 is joined to the absorbent main body 10, the side leak-proof portion 5 is applied with tension toward both ends in the longitudinal direction of the side leak-proof portion 5 toward the outside in the longitudinal direction of the main body. It is preferable to join the leaking part 5 to the absorbent main body 10. As a result, in the natural state of the napkin 1, a state in which the folded end portion 51 of the side leakage preventing portion 5 is separated from the surface sheet 2 is obtained, and the leakage preventing property of the side leakage preventing portion 5 is enhanced.
  • the folded-back end portion 51 of the side leakage preventing portion 5 is at least partially separated from the surface sheet 2 in order for the side leakage preventing portion 5 to form a three-dimensional barrier.
  • the inner edge portion is formed with a groove 7 to be described later, so that the topsheet 2 sinks around the groove 7, so that the three-dimensionality of the side leakage preventing portion 5 with respect to the topsheet 2 is increased, and the width of the main body is increased.
  • the body fluid flowing on the top sheet 2 from the inside to the outside is effectively prevented from moving.
  • the width of each of the pair of side leakage preventing portions 5 and 5 described above preferably has the following dimensions in order to obtain good leakage prevention and wearing feeling.
  • the seal portion 8 and an inner edge in the width direction of the main body are arranged on the longitudinal center line of the wing portion 6.
  • the length of the gap measured along the surface of the side leak-proof portion 5 in the width direction of the main body is preferably 10 to 30 mm, particularly 15 to 25 mm.
  • the width of the non-joining region 5A in the excretory part facing part B is 3 to 15 mm, particularly 5 to 10 mm.
  • the side leakage preventing part 5 has excellent flexibility, difficulty in collapsing, and body followability. Good for getting.
  • the non-joining region 5A in the front part A and the rear part C may not be substantially formed, but the width of the non-joining region 5A in the front part A and the rear part C is 2 to 7 mm. 3 to 5 mm is preferable for obtaining excellent flexibility and crushing resistance of the side leakage preventing part 5. Good.
  • the width of the non-joining region 5A in the excretory part facing part B is formed wider than the front part A and the rear part, the non-contact part of the excretory part facing part B in the individual packaging form to be described later.
  • a force that moves outward (by folding) acts on the upper surface of the joint region 5A. Therefore, the folded end 51 is moved in the individual packaging form, and no fold is formed.
  • the napkin 1 of the first embodiment will be further described.
  • the napkin 1 has a pair of wing portions 6 and 6 that extend from both side edges in the longitudinal direction of the absorbent main body 10.
  • Each of the pair of wing portions 6 and 6 is formed of a side leakage preventing portion forming sheet 50 extending from the absorbent main body 10.
  • the pair of wing portions 6 and 6 are formed in the excretory portion facing portion B.
  • Each of the pair of wing portions 6 and 6 and the side leakage preventing portion 5 on the same side in the longitudinal direction of the main body are integrally formed from a single side leakage preventing portion forming sheet 50.
  • One sheet of the side leakage preventing part forming sheet 50 is divided into a side leakage preventing part 5 and a wing part 6 with the seal part 8 as a boundary.
  • the shape of the seal portion 8 is such that when the wing portion 6 that is connected is bent along the edge of the shorts crotch, it can be easily fitted to the edge of the shorts crotch.
  • the part has a shape constricted inward in the body width direction.
  • the non-joining region 5A has a shape in which the edge on the inner side in the main body width direction is constricted in the main body width direction along the shape of the seal portion 8 in the excretory part facing part B. . Further, in the excretory part facing part B, the part of the joining region 5B connected to the wing part 6 has a shape constricted inward in the body width direction along the shape of the seal part 8.
  • a groove 7 is provided on the skin contact surface side of the absorbent main body 10 in the napkin 1.
  • the groove 7 is formed of a pair of embossed grooves extending in the longitudinal direction of the main body and embossed grooves extending in the width direction of the main body at both longitudinal ends of the embossed groove.
  • the groove 7 is formed so as to extend between the front and rear end portions of the excretory portion facing portion B.
  • Each of the pair of embossed grooves extending in the longitudinal direction of the main body is formed outwardly in the width direction of the main body. It has a shape in which three curved parts that are convexly convex are connected in the longitudinal direction of the main body.
  • the embossed groove extending in the main body width direction has a convex shape outward in the main body longitudinal direction. 'The top sheet 2 and the absorber 4 are joined by the groove 7. The folded end portion 51 of the side leak-proof portion 5 is located just outside the groove 7 as shown in FIG.
  • the basis weight of the portion of the absorbent body 4 arranged inside the groove 7 is larger than that of the outer portion of the groove 7, and the absorbent layer 11 of the absorbent main body 10 has a front and back of the excretory part facing part B.
  • a mid-high portion 13 extending between the end portions is formed.
  • the plan view shape of the middle-high portion 13 is the same as that of the groove 7.
  • the thickness of the absorber 4 is preferably substantially constant in each of the inner portion and the outer portion of the groove 7.
  • the thickness of the part of the absorber 4 arranged inside the groove 7 is projected to the thickness of the part of the absorber 4 arranged on the outside;! ⁇ 10mm, especially 2 ⁇ 8mm
  • the side spill-proof part 5 of the napkin 1 is formed with creases due to packaging, and from the viewpoint of liquid absorption retention. preferable.
  • the center in the width direction is used, and for the outer side of the groove 7, the part that is about 10 mm away from the groove 7 and is less affected by the groove 7 is used as the measurement reference.
  • a conventionally known nonwoven fabric can be used without particular limitation.
  • various nonwoven fabrics such as air-through nonwoven fabric, spunbond nonwoven fabric, meltblown nonwoven fabric, spunlace nonwoven fabric and needle punched nonwoven fabric obtained by hot-air treatment of heat-bonded fiber webs produced by the card method.
  • fiber bonding means in these non-woven fabrics.
  • bonding by soldering or bonding by thermal fusion can be used.
  • mechanical entanglement of fibers such as spunlace nonwoven fabric may be used.
  • the hot-bonded fiber web obtained by the card method is treated with hot air as a non-woven fabric to prevent strong compression.
  • An air-through nonwoven fabric made into a nonwoven fabric is most preferably used.
  • the basis weight of the nonwoven fabric forming the side leak-proof portion forming sheet 50 is 10 to 100 g / m 2 , especially 15 -50 g / m 2 and even 20-50 g / m 2 Strength of the side leak-proof part 5 is improved to improve the leak-proof property and a good feeling of wearing the side leak-proof part 5 It is preferable in obtaining.
  • the basis weight is measured, for example, as follows.
  • the side leakage preventing part forming sheet 50 is cut into a size of lOmm X IOmm or more, preferably 30 mm X 30 mm or more, and a measuring piece having a total area of 250 mm 2 or more is taken from one napkin, and the weight of the measuring piece is maximized.
  • the top sheet 2 As a material for forming the top sheet 2, the back sheet 3, or the absorbent body 4, various materials that are conventionally used in absorbent articles such as sanitary napkins are particularly limited. Use without power.
  • the side leak-proof portion forming sheet 50 of the first embodiment is suitably manufactured by, for example, the method described below.
  • the air-through non-woven fabric was threaded between a pair of metal rolls that had a large number of irregularities and were intertwined with each other, and was subjected to steel match embossing to give a concave shape.
  • a side leakage preventing portion forming sheet 50 is obtained.
  • the clearance between the pair of rolls is partially made sufficiently smaller than the thickness of the nonwoven fabric, and one or both of the rolls are set. It is preferable that the melting point of the resin constituting the nonwoven fabric is the lowest softening point or higher than the melting point of the resin.
  • a sanitary napkin according to a second embodiment of the present invention (first invention) will be described below with reference to FIGS. Regarding the second embodiment, unless otherwise specified, the description in detail regarding the above-described embodiment is applied as appropriate. 5 to 9, the same members as those in FIGS.
  • the napkin 1 according to the second preferred embodiment of the present invention (the first invention) is folded back into the non-joint region 5A!
  • a protruding portion from which a part of the side leakage preventing portion forming sheet protrudes is formed on the opposite inner surface 50a, 50b side of the leakage portion forming sheet 50.
  • the side leak-proof portion forming sheet 50 has a plurality of flanges 5 protruding toward the opposing inner surfaces 50a and 50b of the side leak-proof portion forming sheet 50 that are folded back. Are provided, and the projecting portion is formed by the flange portions 58, 58,.
  • the side leak-proof portion forming sheet 50 that forms the side leak-proof portion 5 does not have a flat portion as shown in FIG. 6 (a). In this way, a large number of flange portions 58, 58... And groove portions 59, 59.
  • the collar portion 58 is curved in a convex shape, and the groove portion 9 is curved in a concave shape.
  • Each of the flange portion 58 and the groove portion 59 is formed in a straight line shape.
  • the flange portions 58 and the groove portions 59 are alternately arranged, and the groove portions 59 are formed by a continuous surface from the flange portion 58.
  • the interval between the adjacent flanges 58 is preferably 0.5 to 5 mm, particularly preferably !! to 3 mm.
  • the interval between adjacent grooves 59 is also preferably 0.5 to 5 mm, particularly preferably !! to 3 mm.
  • the side leakage preventing part forming sheet 50 described above is oblique to the direction in which the flange part 58 and the groove part 59 are arranged as shown in Fig. 6 (b).
  • a side leak-proof portion forming sheet 50 is folded back and formed along a virtual line L that intersects the line so as not to be folded.
  • each of the folded end portion 51 of the side leak-proof portion 5 is formed with a flange portion 58 and a groove portion 59 so as to obliquely intersect the longitudinal direction of the main body.
  • the non-joining region 5A is provided with a large number of flanges 58, 58,... Projecting toward the opposite inner surfaces 50a, 50b of the folded side leakage preventing portion forming sheet 50. Therefore, when the side leak-proof part 5 is pushed by the wearer's skin when the napkin is worn, and the inner surfaces 50a and 50b of the opposing side leak-proof part forming sheet 50 approach each other, the flange parts 58 are partially Since the contact state is formed, the non-bonded region 5A is hardly crushed.
  • the folded end portion 51 is formed with a streak-like pattern at the folded end portion 51 where the opposing side leak-proof portion forming sheets 50 are not overlapped to reduce the cushioning property, so that a fold line is formed. It is hard to be done.
  • the non-joining region 5A of the side leak-proof portion 5 having the above-described configuration is bulky and has cushioning properties and excellent wearing feeling even when worn with a napkin, and has excellent three-dimensional stability. .
  • the side leakage preventing portion 5 also corresponds to a number of flange portions 58, 58, and groove portions 59, 59, as shown in FIGS. Many grooves and ridges are formed Therefore, the touch is excellent.
  • the flange 58 is curved in a concave shape toward the skin contact surface side on the skin contact surface side of the side leak-proof portion 5, and the groove 59 is bent in a convex shape toward the skin contact surface side. ing.
  • the side leakage preventing portion forming sheet 50 is provided with a large number of embossed portions 52, 52, as shown in FIG.
  • the opposed inner surfaces 50a, 50b of the side leakage preventing portion forming sheet 50 are joined to each other by the embossed portions 52, 52.
  • the embossed portion 52 is formed in each of the flange portion 58 and the groove portion 59.
  • the napkin packaging structure 20 of the first embodiment comprises, as shown in Figs. 10 to 12; a napkin 1 and a packaging material 21 whose inner surface is individually peeled, and has an absorbent main body.
  • 10 is provided with a main body adhesive portion 10a (not shown) on the non-skin contact surface side, and the main body adhesive portion 10a adheres to the packaging material 21 so that the main body adhesive portion 10a contacts the inner surface of the packaging material 21.
  • the napkin packaging structure 20 of the first embodiment will be further described.
  • the napkin 1 is the napkin according to the first embodiment or the second embodiment of the present invention (first invention) described above.
  • a pair of main body adhesive portions 10a, 10a are formed on both side portions in the main body longitudinal direction.
  • Each of the pair of main body adhesive portions 10a, 10a is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body.
  • the main body adhesive portion 10a adheres to the inside of the shorts when the napkin is worn, and fixes the absorbent main body 10, and is a so-called slip stopper.
  • wing adhesive portion 6a (not shown) is formed on the non-skin contact surface side of each of the pair of wing portions 6, 6!
  • the pair of wing portions 6, 6 is provided with wing portion adhesive portions 6a, 6a. It is folded upward on the absorbent main body 10, and a piece of release paper (not shown) is placed on the wing portion adhesive portions 6a, 6a, and the release treatment surface thereof is the wing portion adhesive portion 6a. , Adhesive to the 6a side.
  • the pair of wing portions 6 and 6 are indicated by dotted lines. Further, the napkin 1 does not have the recess 52a, or the flange 58 and the groove 59.
  • the development surface of the packaging material 21 is a vertically long rectangle.
  • the wrapping material 21 has peelability because the entire inner surface or the portion in contact with the napkin 1 and the periphery thereof are peeled off.
  • first invention it is not necessary to peel the entire inner surface, and for example, a part obtained by peeling only the portion other than the peripheral portion of the inner surface can be used. Furthermore, it is only necessary that the peeling process is performed only on the inner surface portion of the packaging material 21 that comes into contact with the adhesive portion of the napkin 1.
  • a tab tape 22 is provided at the front end of the packaging material 21 as shown in FIG.
  • the napkin 1 is positioned substantially in the center of the packaging material 21, and the longitudinal direction of the napkin 1 and the longitudinal direction of the packaging material 21 are substantially aligned so that the main body adhesive portions 10a, 10a
  • the wrapping material 21 is detachably adhered to the wrapping material 21 so as to contact the inner surface of the wrapping material 21.
  • the packaging material 21 is formed such that its length and width are larger than the length and width of the napkin 1.
  • the napkin 1 and the packaging material 21 are sequentially and twice from the rear edge side, which is one edge in the longitudinal direction of the napkin 1, with the skin contact surface side as the inner side. It is bent and folded, and the two napkin lines Sl and S2 are formed on the napkin 1 by the bending, and is in the position closest to the center in the longitudinal direction of the excretory part facing region in the absorbent main body 10.
  • the center in the longitudinal direction of the excretory part facing region in the absorbent main body 10 is indicated by a center line CL.
  • the napkin 1 and the packaging material 21 are: It is bent so as not to be bent in the excretory part facing region of the absorbent main body 10.
  • the fold line S1 is formed at the boundary between the front part A and the excretory part facing part B, and the fold line S2 is formed at the boundary between the excretion part facing part B and the rear part C.
  • the two fold lines S 1 and S 2 are located before and after the center in the longitudinal direction of the excretory part-facing region in the absorbent main body 10 of the napkin 1.
  • the napkin 1 is formed wider than the width of the non-joining region 5A in the front part A and the rear part C of the non-joining region 5A in the excretory part facing part B. Therefore, the width of the non-joining region 5A between the two broken lines Sl and S2 is larger than the width of the non-joining region 5A between the front end portion of the absorbent main body 10 and the folding line S1. Similarly, the width of the non-bonded region 5A between the two broken lines Sl and S2 is larger than the width of the non-bonded region 5A between the rear end of the absorbent body 10 and the broken line S2.
  • the fold lines S1 and S2 are formed so as to straddle the middle-high portion 13 in the main body width direction. Since the napkin 1 is bent at the folding lines Sl and S2 according to the thickness of the middle and high portions 13, as shown in FIG. 11, the side leakage preventing portion 5 is formed with creases due to packaging. Even if a crease is formed by packaging, the degree is weak. In particular, since the vicinity of the folded end 51 is close to the middle-high portion 13, a folding fold is formed in the non-joint area 5A.
  • the packaging material 21 is sealed at the left and right side edges and the front edge.
  • the left and right side edges are sealed by heat sealing, and the front edge is sealed by tab tape 22.
  • the left and right side edges are heat-sealed, but it is also preferable to provide perforations along the heat-sealed portion for easier opening.
  • the packaging structure 20 of the first embodiment since the crease due to the fold line is not formed in the excretory part facing part B of the napkin 1 taken out from the packaging structure 20, the side of the excretion part facing part B is formed.
  • the side leakage preventing part forming sheet 50 The surfaces 50a and 50b are at least partially separated from each other, the side leakage preventing portion 5 has a hollow portion, and the folded end portion 51 has a rounded shape.
  • the degree of folding by the fountains Sl and S2 formed before and after the excretory part facing part B of the napkin 1 taken out from the packaging structure 20 is weak.
  • the side leak-proof portion 5 of the napkin 1 taken out from the packaging structure 20 of the first embodiment has a high wearing feeling and leak-proof property.
  • the absorbent layer 11 of the absorbent main body 10 is opposed to the excretory part of the absorbent main body 10, as shown in FIG.
  • a middle-high portion 13 is formed between the front and rear end portions of the region, and the napkin 1 and the packaging material 21 are arranged on the skin contact surface side from the rear end edge side which is one end edge in the longitudinal direction of the napkin 1.
  • the folding spring S3 formed by the bending is formed so as to straddle the middle and high portions 13.
  • the packaging structure 20 of the second embodiment will be further described.
  • the folding line S3 is formed so as to substantially coincide with the central line CL in the longitudinal direction of the excretory part-facing region of the absorbent main body 10.
  • the spring S3 is formed so as to straddle the middle and high portions 13 in the width direction of the main body. Since the napkin 1 is bent by the thickness of the middle and high part 13 in the folding spring S3, the side leakage preventing part 5 is formed with folds by packaging, so Even if ridges are formed, the degree is weak. In particular, since the vicinity of the folded-back end portion 51 is close to the middle-high portion 13, folding folds due to packaging are hardly formed in the non-joining region 5A.
  • the present invention (first invention) can be modified as appropriate without departing from the spirit of the present invention without being limited to the above-described embodiment.
  • the pair of side leakage preventing parts 5 and 5 are preferably formed over the entire length of the absorbent main body 10, but at least the front and rear end parts of the excretory part facing part B It is sufficient if it is formed over the entire area.
  • the front end portion of the folded side leakage preventing portion forming sheet 50 is the side edge portion in the longitudinal direction of the absorbent main body 10 and the back sheet 3 from the seal portion 8.
  • the joined force S and the front end portion of the folded side leakage preventing portion forming sheet 50 may be located on the inner side in the body width direction with respect to the side edge portion.
  • the tip portion is joined to the surface sheet 2 or the portion of the side leakage preventing portion forming sheet 50 facing each other.
  • the shape of the recess 52a in plan view may be an elliptical shape, a triangular shape, a rectangular shape, a combination thereof, or the like in addition to a circular shape.
  • nabkin 1 is bent twice, but may be bent three or more times. Further, in the packaging structure 20 of the second embodiment, the napkin 1 may be sequentially bent twice or more times as it was once bent. Orizumi S3 does not have to match the central spring CL.
  • the absorbent article of the present invention may be a sanitary napkin, but may also be a panty liner, an incontinence pad, or the like.
  • the absorbent article 1 of the first embodiment is a sanitary napkin, and has a liquid-retaining absorbent layer 11 and a liquid-impermeable leak-proof layer 12, as shown in Figs. 14 to 16;
  • a substantially vertically long absorbent main body 10 is provided, and both side portions in the longitudinal direction of the absorbent main body 10 on the skin contact surface side are covered with a pair of side leakage preventing portions 5 and 5.
  • the absorbent layer 11 in the napkin 1 is composed of a liquid-permeable surface sheet 2 and a liquid-retaining absorbent body 4, and the leak-proof layer 12 is composed of a back sheet 3 having air permeability and liquid impermeability.
  • the pair of side leakage preventing portions 5 and 5 are configured to include the opposing side leakage preventing portion forming sheets 50A and 50B, respectively.
  • Embossed part 52 is formed on both side leakage prevention part forming sheets 50A and 50B. Yes.
  • the two side leak-proof portion forming sheets 50A and 50B are overlapped so that the opposing side leak-proof portion forming sheets 50A and 50B have end portions 51 inward in the width direction of the absorbent main body 10. Formed at the end 51, and the sheet end portions 51A, 51B of the side leak-proof portion forming sheets 50A, 50B have at least a non-joined portion, and the absorbent main body 10 in the side leak-proof portion 5 is formed.
  • the sanitary napkin 1 (hereinafter also simply referred to as napkin) of the first embodiment will be described in further detail.
  • the napkin 1 is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the absorbent main body 10 (hereinafter also referred to as the main body longitudinal direction).
  • Each of the top sheet 2 and the back sheet 3 is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • the absorbent body 4 is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body, and is sandwiched and fixed between the top sheet 2 and the back sheet 3.
  • the width of the top sheet 2 is substantially the same as the width of the absorber 4 and is formed narrower than the width of the back sheet 3.
  • the top sheet 2 covers the entire surface of the absorbent body 4 on the skin contact surface side.
  • the top sheet 2 and the back sheet 3 are respectively extended from both ends in the longitudinal direction of the absorbent body 4, and the extended portions are bonded to each other by a known bonding method such as heat sealing or bonding with an adhesive.
  • Each of the pair of side leakage preventing parts 5 and 5 in the napkin 1 of the first embodiment will be further described.
  • Each of the pair of side leakage preventing parts 5 and 5 is formed in a vertically long shape as shown in FIG. The longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • Each of the pair of side leakage preventing parts 5 and 5 has substantially the same width, and is arranged between both end parts in the longitudinal direction of the main body.
  • each of the pair of side leak-proof portions 5 and 5 is located on the side non-skin contact surface side with the side leak-proof portion forming sheet 50A located on the skin contact surface side.
  • Side leakage preventing portion forming sheet 50B and force The sheet end portions 51A and 51B on the inner side in the width direction of the main body are overlapped so as to substantially coincide with each other.
  • Each of the two side leak-proof portion forming sheets 50A and 50B is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • the shape of the side leakage preventing part forming sheet 50B in plan view is the same as that of the side leakage preventing part 5.
  • Side leakage preventing part forming sheet 50A force The shape of the portion overlapping the side leakage preventing part forming sheet 50B in plan view is the same as that of the side leakage preventing part forming sheet 50B.
  • the two side leak-proof portion forming sheets 50A and 50B are each formed of a nonwoven fabric.
  • the non-joining portion is provided so as to continuously extend in the longitudinal direction of the absorbent main body 10.
  • the sheet end portions 51 ⁇ / b> A and 51 ⁇ / b> B are not joined between substantially both end portions in the longitudinal direction of the side leak-proof portion 5.
  • Each of the sheet end portions 51A and 51B is linear in the longitudinal direction of the main body, and is formed from a cut surface obtained by cutting the nonwoven fabric as shown in FIG.
  • the inner edge portion as the inner end portion 51 in the width direction of the main body is such that the sheet end portion 51A and the sheet end portion 51B overlap vertically as shown in FIG. Is formed.
  • the end 51 is linearly formed in the longitudinal direction of the main body.
  • Each of the two side leakage preventing part forming sheets 50A and 50B is joined to the back sheet 3 by the seal part 8 at the side edge of the absorbent main body 10!
  • the sheet end portions 51A and 51B substantially coincide with each other in the width direction of the absorbent main body 10, as shown in FIG.
  • the sheet end portions 51A and 51B substantially coincide with each other when the sheet end portion 51A and the sheet end portion 51B are slightly shifted in the width direction of the main body, and the sheet end portion 51A and the sheet end portion. This includes the case where the positions in the main body width direction of the respective parts 51B are the same and not shifted.
  • the shifted length may be 0 to 5 mm, particularly 0 to 3 mm. It is preferable for obtaining the leakage prevention property and cushioning property of the side leakage prevention part 5.
  • the side leak-proof portion 5 is formed by superposing three or more side leak-proof portion forming sheets, the sheet end portions of the at least two side leak-proof portion forming sheets are shifted from each other. Length force that is in the above range Force is preferable for the same reason.
  • the above-mentioned misalignment is preferable in that the uppermost sheet is the inner end in the width direction from the viewpoint of improving the feel and cushion feeling.
  • each of the pair of side leak-proof portions 5 and 5 has a non-joint region in the vicinity of the end portion 51 where the two side leak-proof portion forming sheets 50A and 50B are not joined.
  • 5A In the outer portion in the main body width direction than the non-joining region 5A, there is a joining region 5B in which two side leakage preventing portion forming sheets 50A and 50B are joined. In the joining region 5B, the two side leakage preventing part forming sheets 50A and 50B are joined by the embossed parts 52 and 52, respectively.
  • the non-joining region 5A is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body.
  • the non-joining region 5A has a predetermined width and is formed between both end portions in the longitudinal direction of the side leakage preventing portion 5.
  • the joining region 5B is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body.
  • the joining region 5B is a portion excluding the non-joining region 5A of the side leakage preventing portion 5.
  • the joining region 5B has a predetermined width and is formed between both ends of the side leakage preventing portion 5 in the longitudinal direction.
  • the non-joining region 5A includes an end portion 51 of the side leakage preventing portion 5 and is an inner region in the body width direction of the side leakage preventing portion 5.
  • the sheet end portions 51A and 51B are expanded in the thickness direction of the side leakage preventing portion forming sheets 50A and 50B and are fluffed. Therefore, in the non-joint region 5A, the two side leak-proof portion forming sheets 50A and 50B are partially separated, and the side leak-proof portion 5 exhibits good cushioning properties when the napkin is worn.
  • each of the sheet end portions 51A, 51B that are expanded swells in a trumpet shape inward in the main body width direction.
  • the inner sides of the sheet end portions 51A and 51B swelled in a trumpet shape are in contact with each other, and between the side leak-proof portion forming sheet 50A and the side leak-proof portion forming sheet 50B. A space is partially formed.
  • the non-bonded area 5A is joined by a large number of embossed parts 52, 52 ... This is because is large.
  • the fibers constituting the non-woven fabric are consolidated by the embossed portion 52 in the bonding region 5B, and the vicinity including the embossed portion 52 has a small thickness.
  • the non-woven fabric has an embossed portion 52 in the non-bonded region 5A. Therefore, the degree of freedom of the fiber is high, and the thickness of the nonwoven fabric at each of the sheet end portions 51A and 51B is the thickness before or near the embossed portion 52 formed in the joining region 5B. It is in.
  • the nonwoven fabric may be reduced in thickness. In this case, as will be described in detail later, the production of the napkin 1 is performed. It is preferable to apply hot air treatment to the nonwoven fabric in the process to restore the thickness of the nonwoven fabric.
  • Another reason is that by providing a large number of embossed portions 52, 52 ... in the joining region 5B, the surface on the skin contact surface side and the surface on the non-skin contact surface side of the sheet end are respectively Since the main body is pulled outward in the width direction, each of the sheet end portions 51A and 51B expands, and the thickness of each of the sheet end portions 51A and 51B is increased before the embossed portion 52 is formed in the joining region 5B. It is because it becomes larger than the thickness of the nonwoven fabric. The thickness of each of the sheet end portions 51A and 51B can be further increased by performing the hot air treatment.
  • the sheet end portions 51A and 51B that form the end portion 51 of the side leak-proof portion 5 are bulky, flexible, excellent in cushioning properties, and highly leak-proof.
  • the width of the non-joining region 5A is preferably 5 to 70%, particularly 20 to 50% of the width of the side leak-proof portion 5 from the viewpoint described above, together with the non-joining region 5B. This is preferable.
  • the width A of the non-joining region is preferably 2 to 10 mm, particularly 3 to 7 mm, from the viewpoint of obtaining the leakage prevention property and cushioning property of the side leakage prevention portion 5.
  • the side leak-proof portion 5 is provided with a large number of embossed portions 52, 52..., And two side leak-proof portion forming sheets 50A, 50B force S , And the embossed portions 52, 52.
  • the embossed portions 52 in the joining region 5B are arranged in a so-called staggered pattern, and the individual embossed portions 52 are each formed discontinuously in a circular shape in plan view. Has been.
  • the side leakage preventing portion 5 is provided with a large number of embossed portions 52, 52 ⁇ in the joining region 5B, the contact area with the skin of the napkin wearer is reduced and the touch is good.
  • the side leakage preventing part 5 includes an embossed part 52 and a non-embossed part.
  • the side leak-proof portion forming sheets 50A and 50B are easily bent or bent along a large number of the rows. Excellent trackability.
  • the embossed portion 52 has a diameter of 0.5 to 5 mm, particularly preferably !! to 3 mm, from the viewpoint of the touch, flexibility and strength of the side leakage preventing portion 5.
  • the distance between the embossed parts 52 at the closest distance is 1 to 5 mm, especially 2 to 3 mm in the longitudinal direction of the main body “ ⁇ ”. ! ⁇ 8 mm, particularly 2 to 5 mm, which is preferable from the same viewpoint.
  • the longitudinal direction and the width direction may not be in the longitudinal direction and the width direction at the distance between the centers. In some cases, it is determined by the distance between this imaginary line and the center of the embossed part 52 at the closest distance.
  • the side leak-proof portion 5 will be further described. It is preferable that the side leak-proof portion 5 is not joined to the inner side partial force in the width direction of the main body with respect to the seal portion 8 and the top sheet 2. However, it is preferable that the two side leak-proof portion forming sheets 50A and 50B are joined to the surface sheet 2 in the width direction of the main body or in the vicinity of the end portion 51 at both ends in the longitudinal direction of the main body.
  • the end portion 51 of the side leak-proof portion 5 is preferably at least partially separated from the topsheet 2, so that the side leak-proof portion 5 forms a three-dimensional barrier. Also, since the end 51 is formed with a groove 7 described later, the top sheet 2 sinks around the groove 7, so that the degree of three-dimensionality of the side leakage preventing part 5 with respect to the top sheet 2 is increased. It effectively prevents the movement of body fluid that has flowed on the top sheet 2 from the inside in the direction to the outside.
  • the width of each of the pair of side leakage preventing portions 5, 5 described above preferably has the following dimensions in order to obtain good leakage prevention and a feeling of wearing.
  • the seal portion 8 and an inner edge in the width direction of the main body are arranged on the longitudinal center line of the wing portion 6.
  • the length of the gap measured along the surface of the side leak-proof portion 5 in the width direction of the main body is preferably 10 to 30 mm, particularly 15 to 25 mm.
  • the napkin 1 of the first embodiment will be further described.
  • the main body 10 has a pair of wing portions 6 and 6 extending from both side edges in the longitudinal direction, and each of the pair of wing portions 6 and 6 has a side leak-proof portion shape extending from the absorbent main body 10. It is formed from the composite sheet 50A.
  • the pair of wing parts 6 and 6 are formed on both sides of the excretory part facing region in the absorbent main body 10.
  • Each of the pair of wings 6 and 6 and the side leakage preventing part 5 on the same side in the longitudinal direction of the main body are integrally formed from one side leakage preventing part forming sheet 50A.
  • One sheet of the side leakage preventing part forming sheet 50A is divided into the side leakage preventing part 5 and the wing part 6 with the seal part 8 as a boundary.
  • the shape of the seal portion 8 is the center in the longitudinal direction so that when the connected wing portion 6 is bent along the edge of the shorts crotch, it easily fits with the edge of the shorts crotch.
  • the part has a shape constricted inward in the body width direction.
  • the portion of the joining region 5B connected to the wing portion 6 has a shape constricted inward in the main body width direction along the shape of the seal portion 8.
  • the wing portion 6 bent along the edge portion of the shorts crotch is fixed to the outer surface of the shorts.
  • a wing adhesive portion (not shown) is provided.
  • a groove 7 is provided on the skin contact surface side of the absorbent main body 10 in the napkin 1.
  • the groove 7 is formed of a pair of embossed grooves extending in the longitudinal direction of the main body and embossed grooves extending in the width direction of the main body at both ends in the longitudinal direction of the embossed groove.
  • the groove 7 is formed so as to extend between the front and rear end portions of the excretory portion facing portion B.
  • Each of the pair of embossed grooves extending in the longitudinal direction of the main body has a shape in which three portions that are convexly curved outward in the width direction of the main body are connected in the longitudinal direction of the main body.
  • the embossed groove extending in the main body width direction has a convex shape outward in the main body longitudinal direction. 'The top sheet 2 and the absorber 4 are joined by the groove 7. As shown in FIG. 15, the end portion 51 of the side leakage preventing portion 5 is located just outside the groove 7.
  • a conventionally known nonwoven fabric can be used without particular limitation.
  • air-through nonwoven fabrics spunbond nonwoven fabrics, melts obtained by hot-air treatment of heat-bonded fiber webs manufactured by the card method
  • various nonwoven fabrics such as blown nonwoven fabric, spunlace nonwoven fabric and needle punched nonwoven fabric.
  • fiber bonding means there are no particular restrictions on the fiber bonding means in these nonwoven fabrics. For example, bonding by means of a solder can be used. Further, instead of fiber bonding, mechanical entanglement of fibers such as spunlace nonwoven fabric may be used.
  • the hot-sealed fiber web obtained by the card method is treated with hot air as a non-woven fabric to give strong compression.
  • An air-through non-woven fabric formed into a non-woven fabric is most preferably used.
  • the basis weight of the nonwoven fabric forming the side leak-proof portion forming sheets 50A and 50B is 8 to 30 g / m 2 , especially 10 to 25 g / m 2. This is preferable for improving the leak-proof property and obtaining a good wearing feeling of the side leak-proof portion 5.
  • the material for forming the top sheet 2, the back sheet 3, or the absorbent body 4 various materials that are conventionally used in absorbent articles such as sanitary napkins are particularly limited. Use without power.
  • the napkin 1 according to the second preferred embodiment of the present invention is, as shown in Figs. 17 to 19, the sheet end portions 51A and 51B of the side leakage preventing portion forming sheets 50A and 50B, respectively.
  • the sheet end portions 51A and 51B are partially bonded to each other so that the end portion 51 of the side leakage preventing portion 5 has a broken line shape as the non-bonded portion.
  • the cut 51a is formed to extend in the longitudinal direction of the absorbent main body 10.
  • the side leak-proof portion 5 has a side leak-proof portion forming sheet 50 so that the side leak-proof portion 5 has an end portion 51 as a folded end portion inward in the width direction of the main body.
  • the leak forming sheet 50 is formed by being folded back outward in the width direction of the main body.
  • the inner side of the side leakage-proof portion forming sheet 50 folded inward in the width direction of the portion where the sheet end portions 51A and 51B are bonded is shown in FIG.
  • a partially hollow state is formed as shown in FIG.
  • the nonwoven fabric forming the side leak-proof portion forming sheet 50 swells softly, and the rounded end portion 51 is formed.
  • the side leak-proof portion forming sheet 50 is partially cut at the end portion 51 as shown in Figs. As shown in FIG. 17, the broken line 51a formed by cutting is vertically long and is formed so as to extend along the end 51 in the longitudinal direction of the main body.
  • the side end portions 51A and 51B of the side leakage preventing portion forming sheets 50A and 50B are as shown in FIG. Substantially match. Each of the sheet end portions 51A and 51B expands in the thickness direction of the side leakage preventing portion forming sheets 50A and 50B, and is fluffy.
  • the broken line 51a is formed by aligning predetermined lengths 51a 'in the longitudinal direction of the main body at equal intervals.
  • the cut 51a ' is open.
  • the napkin 1 according to the second embodiment is configured such that the end of the side leak-proof portion 5 has the non-joined portion, and the fiber omission or fiber generated from the cut surface of the side leak-proof portion forming sheet 50 is present.
  • the fluff is reduced and the texture is excellent.
  • the length of the cut line 51a 'constituting the broken line cut line 51a is 2-1 Omm, particularly 3 to 5 mm.
  • the force is preferable from the viewpoints described above and the cushioning property of the side leakage preventing part 5! /.
  • the interval in the longitudinal direction of the main body between the cut lines 51a 'constituting the broken line cut line 51a is:! To 10 mm, particularly 2 to 7 mm.
  • the lengthwise interval of the cuts is not the same length, but prevents the fluff from being generated due to the side sheet being unwound from the cuts during use, etc. It is preferable to mix several lengths in the les.
  • the napkin 1 of the second embodiment includes a covering sheet 50C, and the end portion 51 of the side leakage preventing part 5 is covered with the covering sheet 50C.
  • the covering sheet 50C covers the end portion 51 of the side leakage preventing portion 5 and is arranged so as to cover at least the portion where the joining region 5B is formed on the outer side in the body width direction. Is preferred.
  • the entire body width direction is covered with the covering sheet 50C on the skin contact surface side and the non-skin contact surface side of the side leak-proof portion 5.
  • the covering sheet 50C is joined to the back sheet 3 together with the side leakage preventing portion forming sheet 50 by the seal portion 8 at the side edge portion of the absorbent main body 10.
  • the covering sheet 50C extends from the side edge of the absorbent main body 10 inwardly in the width direction of the main body so as to cover the skin contact surface side of the side leakage preventing portion 5, and a folded end portion is formed.
  • FIG. 3 after being folded back outward in the body width direction toward the absorbent layer 11, the outward force in the body width direction is applied so as to cover the non-skin contact surface side of the side leakage preventing part 5. It extends.
  • the front end portion of the folded cover sheet 50C is joined to the back sheet 3 again at the seal portion 8.
  • the coating sheet 50C is formed from a nonwoven fabric! /
  • the non-woven fabric forming the covering sheet 50C the side leakage preventing part forming sheet 50A described above is used.
  • the basis weight of the nonwoven fabric forming the covering sheet 50C is 8 to 30 g / m 2 , particularly 10 to 25 g / m 2 .
  • the side leakage preventing part 5 includes two side leakage preventing part forming sheets 50A and 50B, The side leakage preventing portion forming sheet 50D interposed between the sheets is overlapped and formed!
  • the side leak-proof part 5 is formed by laminating three sheets!
  • the sheet end portions 51A and 51B are separated from each other because the side leakage preventing portion forming sheet 50D is interposed between the two sheets.
  • the sheet end portion 51D of the side leak-proof portion forming sheet 50D is positioned outward in the main body width direction from the sheet end portions 51A and 51B.
  • the side leak-proof part forming sheet 50D is formed of a nonwoven fabric, and the basis weight thereof is 2 sheets. Id leakage preventing part forming sheet 50A, 50B larger force It is preferable for enhancing the cushioning property of the side leakage preventing part 5.
  • the basis weights of the nonwoven fabrics forming the two side leak-proof portion forming sheets 50A, 5OB are the same, and the basis weight of the nonwoven fabric forming the side leak-proof portion forming sheet 50D is two sheets. 20 to 100%, especially 30 to 80% larger than the basis weight of the non-woven fabric forming the side leakage preventing part forming sheets 50A and 50B, because the expansion of the inner end of the side sheet is good. preferable.
  • the side leak-proof portion forming sheet 50D is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • the length of the side leak-proof portion forming sheet 50D in the longitudinal direction of the main body is the same as that of the side leak-proof portion forming sheet 50B, and the length in the width direction of the main body is smaller than that of the side leak-proof portion forming sheet 50B.
  • the sheet end portion 51D of the side leakage preventing portion forming sheet 50D is linear in the longitudinal direction of the main body, and is formed from a cut surface obtained by cutting the nonwoven fabric.
  • the side leak-proof portion forming sheet 50D is joined to the back sheet 3 together with the two side leak-proof portion forming sheets 5OA and 50B by the seal portion 8 at the side edge of the absorbent main body 10.
  • the side leakage preventing part forming sheet 50C is joined to the two side leakage preventing part forming sheets 50A, 50B by a large number of embossed parts 52, 52,.
  • the pair of side leakage preventing parts 5 and 5 are preferably formed over the entire length of the absorbent main body 10, but at least at the front and rear end parts of the excretory part facing region. It is formed over! /
  • a broken line-like cut 51a is formed at the end 51 of the side leakage preventing part 5, and the cut 51a has a plurality of vertically long cuts 51a 'at equal intervals. Although it was formed side by side, it does not have to be arranged at equal intervals, and the end 51 of the side leak-proof portion forming sheet 50 may be partially cut, and the shape of the cut 51 is circular, rectangular, It may be polygonal and is not limited to the embodiment described above. In the second embodiment, one or a plurality of other sheets are provided between the folded side leakage preventing portion forming sheets 50. Do not have a leak-proof part forming sheet.
  • the basis weight of the nonwoven fabric forming the side leak-proof portion forming sheet 50D was larger than the basis weight of the nonwoven fabric forming the two side leak-proof portion forming sheets 50A, 50B. It may be equivalent.
  • one side leakage preventing portion forming sheet is provided between the two side leakage preventing portion forming sheets 50A and 50B, but two or more other side leakage preventing portion forming sheets are provided. Have a forming sheet! /!
  • the absorbent article of the present invention may be a sanitary napkin, but may also be a panty liner, an incontinence pad, or the like.
  • a preferred first embodiment for producing the napkin of the present invention includes, for example, the following methods.
  • the first embodiment of the manufacturing method of the napkin 1 according to the first embodiment described above is a long shape wound in two rolls as shown in FIGS. 21 (a) to 21 (c).
  • the side leakage preventing portion forming sheet continuum 50Aa, 50B a is fed out from the side sheets 100A, 100B of the side leakage preventing portion forming sheet, and the side leakage preventing portion forming sheet continuity 50Aa, 50 Ba is fed out.
  • the hot air treatment process in which hot air is blown on each side and the hot air-treated side leakage preventing portion forming sheet continuum 50Aa, 50Ba are overlapped with one side edge 50Aaa, 50 Baa in the longitudinal direction substantially matched.
  • the continuous side leakage preventing portion forming sheet continuous body 50Aa, 50 Ba is formed from a breathable nonwoven fabric, and in the hot air treatment step, hot air is blown onto the nonwoven fabric in an air-through manner to increase the bulk (thickness) of the nonwoven fabric.
  • a method for recovering the volume of the wound nonwoven fabric for example, there is a method described in the specification of JP-A-2004-13 7655.
  • heat treatment apparatuses 101A and 101B used in the hot air treatment step will be described with reference to FIGS. Since the heat treatment apparatuses 101A and 101B are the same apparatus, the heat treatment apparatus 101A will be described below.
  • the heat treatment apparatus 101A includes a wire mesh conveyor belt 1012, a heating zone H, and a cooling zone C as shown in FIG.
  • the conveyor belt 1012 has an endless edge and is supported by a pair of support shafts 1013 and 1013 so as to go around in a predetermined direction.
  • a heating zone H is installed relatively upstream with respect to the circumferential direction of the conveyor belt 1012, and a cooling zone C is installed relatively downstream.
  • the conveyor belt 1012 is made of metal or resin such as polyethylene terephthalate. From the viewpoint of heat dissipation efficiency in the heating zone H and the cooling zone C, the conveyor belt 1012 is preferably made of a resin such as polyethylene terephthalate! /.
  • a first blower 1014 is installed on the upper side of the conveyor belt 1012 so as to face the conveyor benore 1012.
  • the first blower 1014 blows out toward the hot wind competition completion belt 1012 heated to a predetermined temperature.
  • a first suction box 1015 for sucking hot air blown from the first blower 1014 is installed at a position facing the first blower 1014 with the conveyor belt 1012 interposed therebetween.
  • the first blower 1014 and the first succession box 1015 constitute a heating zone H.
  • the hot air sucked by the first suction box 1015 is sent to the first blower 1014 through a duct (not shown). That is, the hot air circulates between the first blower 1014 and the first suction box 1015.
  • a second blower 1016 is installed opposite to the conveyor belt 1012 immediately downstream of the first blower 1014 in the circumferential direction of the conveyor belt 1012. From the second blower 1016, cold air of a predetermined temperature blows out toward the conveyor belt 1012. At the position facing the second blower 1016 across the conveyor belt 1012, the second blower 1016 A second suction box 1017 is installed to suck in cool air that has been blown out. The second blower 1016 and the second suction box 1017 constitute a cooling zone C. The cold air sucked by the second suction box 1017 is discharged out of the apparatus through a duct (not shown).
  • the side leakage preventing portion forming sheet continuous bodies 50Aa and 50Ba are fed out from the original fabrics 100A and 100B, respectively.
  • the bulk of the side leakage preventing portion forming sheet continuous bodies 50Aa and 50Ba wound in a roll shape is reduced by the winding pressure.
  • the bulk of the side leakage preventing portion forming sheet continuous bodies 50Aa and 50Ba in this state is recovered by passing them through the devices 101A and 101B.
  • the width of the side leakage preventing portion forming sheet continuous body 50Aa preferably has a dimension capable of forming the side leakage preventing portion forming sheet 50A (including the wing portion 6) in the napkin 1.
  • the width of the side leakage preventing portion forming sheet continuous body 50Ba has a dimension capable of forming the side leakage preventing portion forming sheet 50B in the napkin 1 which is narrower than the width of the side leakage preventing portion forming sheet continuous body 50Aa. S is preferred.
  • Each of the drawn side leakage preventing portion forming sheet continuums 50Aa and 50Ba is sent to the hot air treatment step.
  • the hot air treatment step hot air is blown to each of the drawn side leakage preventing portion forming sheet continuous bodies 50Aa and 50Ba to recover the bulk.
  • the hot air treatment for the side leakage preventing portion forming sheet continuous body 50Aa is also the same for the hot air treatment for the side leakage preventing portion forming sheet continuous body 5 OBa.
  • the side leakage preventing portion forming sheet continuous body 50Aa fed from the original fabric 100A is conveyed together with the conveyor belt 1012.
  • the transported side leakage preventing portion forming sheet continuous body 50Aa is sent to the heating zone H.
  • hot air heated to a predetermined temperature is blown out from the first blower 1014 toward the conveyor belt 1012.
  • hot air is blown to the continuous side leakage prevention sheet forming sheet 50Aa by the air-through method. That is, hot air is blown to the side leakage preventing portion forming sheet continuous body 50Aa, and the blown hot air passes through the side leakage preventing portion forming sheet continuous body 50Aa.
  • This hot air blowing operation By the operation, the bulk of the side leakage preventing portion forming sheet continuous body 50Aa, which is a nonwoven fabric in a state in which the bulk is reduced, is increased and recovered to the same level as before the winding.
  • Preferable V in the bulk recovery of the nonwoven fabric forming the side leakage preventing part forming sheet continuous body 50Aa V and each heat treatment condition are as follows.
  • the conveying speed of the conveyor belt 1012 varies depending on the material of the nonwoven fabric, the degree to which the bulk is reduced, etc., and when the nonwoven fabric contains thermoplastic fibers, it is 40 to 350 cm / second, especially 80 to 250 cm / second. I prefer to be there!
  • the temperature of the hot air varies depending on the material of the nonwoven fabric, the degree to which the bulk is reduced, etc.
  • the nonwoven fabric contains thermoplastic fibers, it should be 90 to 120 ° C, especially 100 to 110 ° C. It is preferable.
  • the temperature of the hot air should be 5-30 ° C, especially 10-20 ° C lower than the melting point of the heat-fusible fibers. Is preferred
  • the blowing time of the hot air is sufficient for a short time, specifically 0.05 to 3 seconds, preferably 0.05 to;! Seconds, more preferably about 0.05 to 0.5 seconds.
  • the bulk of the non-woven fabric 10 is restored by blowing hot air for a short time. This greatly contributes to improving production efficiency and downsizing the equipment.
  • the reason for the short spraying time is thought to be the contribution of the air-through method.
  • cooling zone C cold air of a predetermined temperature is blowing from the second blower 1016 toward the conveyor belt 1012.
  • the nonwoven fabric is cooled by the air-through method. Wind is blown. That is, in the cooling zone C, cold air is blown to the nonwoven fabric, and the blown cold air penetrates the nonwoven fabric.
  • the temperature of the cold air depends on the type of fiber constituting the nonwoven fabric, a sufficient cooling effect can be obtained if it is 50 ° C or lower, particularly 30 ° C or lower. Although there is no particular restriction on the lower limit value of the temperature of the cold air! /, It is appropriate that the room temperature is about 20 to 25 ° C. from the viewpoint of energy cost and simplification of the apparatus 101A.
  • the wind speed of the cold air should be:! ⁇ 10m / sec, especially l ⁇ 5m / sec, especially l ⁇ 3m / sec Preferred. If the wind speed is within this range, a sufficient cooling effect is exhibited. In addition, the risk of hindering the stable conveyance of the nonwoven fabric due to the increased wind speed is reduced.
  • a short time is sufficient for the cold air blowing time.
  • the non-woven fabric is sufficiently cooled by spraying cold air for a very short time of 0.01% or more, particularly 0.02 ⁇ ;!, Especially 0.05 ⁇ 0.5.
  • the reason for the short spraying time is thought to be the contribution of the air-through method.
  • the hot air-treated side leakage preventing portion forming sheet continuous bodies 50Aa and 50Ba are sent to the embossing step.
  • each of the side leakage preventing portion forming sheet continuums 50Aa and 50Ba is substantially formed on one side edge 50Aaa and 50Baa in the longitudinal direction.
  • a laminated body continuation made to coincide with each other is produced, and the laminated body continuation is sent to the embossing device 102.
  • the embossing device 102 includes a pair of emboss rolls in which embossing convex portions are regularly arranged on the peripheral surface.
  • the embossing convex portion on one embossing roll is arranged over a predetermined width on each embossing roll peripheral surface so as to face the embossing convex portion on the other embossing roll.
  • the clearance between the pair of embossing rolls is formed to be smaller than the thickness of the overlapped side leakage preventing portion forming sheet continuous body 50Aa, 50Ba within a predetermined width where the embossing convex portions are arranged.
  • the embossed convex portion is arranged! /, And the portion adjacent to the predetermined width! /, The clearance between the pair of embossing rolls is overlapped and the side leakage preventing portion forming sheet continuous body is overlapped. 50Aa, 50Ba It is formed larger than the thickness!
  • the laminate continuum was regularly arranged with partial cavities spaced inward in the width direction of the laminate continuum from the side edges 50Aaa and 50Baa, and embossing convex portions on the circumferential surface of the embossing roll.
  • Side embossed parts 52, 52 ... are formed on the side leakage preventing sheet forming sheet continuous body 50Aa, 50Ba, which are fed to the embossing device 102 so that they are embossed in part, and overlapped
  • the leakage preventing portion forming sheet continuum 50Aa and 50Ba are joined together, and the laminated body continuum is sent to the rotary cutter 103.
  • the laminate continuous body includes a plurality of embossed portions 52, 52... Extending from the side edges 50Aaa, 50Baa to the opposite side edge from the portion spaced inward in the width direction of the laminate continuous body. ⁇ ⁇ Is preferably formed.
  • the side continuous leak preventive part forming part 5a5 is continuous and the wing part forming part 5a6 is discontinuous from the laminate continuous body.
  • the laminated body continuous body is cut so as to swing in the width direction thereof, and the side leakage preventing portion connecting member 5a having a large number of side leakage preventing portion forming portions 5a5 and wing portion forming portions 5a6 is provided. Make it.
  • the side leakage preventing portion forming portion 5a5 is a portion of the side leakage preventing portion continuous member 5a that forms the side leakage preventing portion 5
  • the wing portion forming portion 5a6 is the portion of the side leakage preventing portion continuous member 5a that forms the wing portion 6.
  • a device used for cutting it is possible to use a device that has been used for cutting absorbent articles other than rotary cutters. In FIG. 21 (c), the embossed portion 52 is not shown.
  • the pair of side leak-proof portion continuous members 5a and 5a are separately prepared on both side portions in the longitudinal direction on the skin contact surface side of the absorbent main body continuous body 1 Oa.
  • the formed sheet continuous body 50Ba side is opposed to the absorbent main body continuous body 10a and the side edges 50Aaa and 5OBaa are joined so as to be positioned inward in the width direction of the absorbent main body continuous body 10a, and the napkin 1
  • the upper and lower surfaces are joined across the width direction at a predetermined interval corresponding to the length to form a seal portion, and the absorbent article continuous body la is produced.
  • the side leak-proof portion continuous member 5a is formed from the side leak-proof portion forming portion 5a5 along the boundary between the side leak-proof portion forming portion 5a5 and the wing portion forming portion 5a6.
  • 10a It joins to the absorptive main body continuous body 10a so that the side part of the longitudinal direction which covers may be covered.
  • the pair of side leakage preventing part continuous members 5a and 5a and the absorbent main body continuous body 10a are joined to each other at a predetermined interval in the strength direction by the seal part.
  • the absorbent article continuum la is sent to the cutting step, and in the cutting step, the absorbent article continuum la is intermittently formed in the longitudinal direction as the sealed portion as the cut portion.
  • the napkin of the present invention as an individual absorbent article is sent to the cutting step, and in the cutting step, the absorbent article continuum la is intermittently formed in the longitudinal direction as the sealed portion as the cut portion.
  • a force that can use various devices conventionally used for cutting absorbent articles is preferable.
  • a combination of a cutter roll and a receiving roll or a force roll is heated.
  • part of the napkin 1 which is not demonstrated especially including the absorptive main body continuous body 10a is manufactured in accordance with a conventional method.
  • the napkin 1 of the present invention (second invention) is obtained. Further, by providing the hot air treatment step before the embossing step, the bulk of each of the side leakage preventing portion forming sheets 50A and 50B can be recovered to the state before winding. Therefore, the seat end portions 51A and 51B are expanded widely, and the napkin 1 excellent in flexibility and cushioning properties of the side leakage preventing portion 5 can be obtained.
  • the second embodiment of the method for manufacturing the napkin 1 according to the first embodiment described above is a long side guard wound in a roll shape as shown in FIGS. 23 (a) to 23 (b).
  • a number of embossed parts 52, 52 An embossing process for producing the side leakage preventing part continuous member 5a, and a first cutting process for continuously cutting the folded end 51 of the side leakage preventing part continuous member 5a in the longitudinal direction of the side leakage preventing part continuous member 5a;
  • the hot air treatment step of blowing hot air to the cut side leakage preventing part continuous member 5a, and the pair of side leakage preventing part continuous members 5a, 5a that have been subjected to the hot air treatment are separately produced.
  • a joining step in which the folded end portions 51 are joined so as to be positioned inward in the width direction of the absorbent main body continuous body 10a on both sides in the direction, and the absorbent article continuous body la is produced.
  • the side leakage preventing portion forming sheet continuous body 50Aa is fed out from one raw fabric 100A.
  • the width of the continuous side leakage preventing part forming sheet 50Aa has a dimension that can form the side leakage preventing part forming sheet 50A (including the wing part 6) and the side leakage preventing part forming sheet 50B arranged in the width direction of the napkin 1. ! /, I prefer to do that.
  • the fed side leakage preventing portion forming sheet continuous body 50Aa is sent to the folding step.
  • one side portion in the longitudinal direction of the side leakage preventing portion forming sheet continuous body 50Aa is orthogonal to the longitudinal direction. Fold it in the direction you want and fold it in half.
  • the side portion it is preferable that one side portion of the side leakage preventing portion forming sheet continuous body 50Aa is folded so that the folded end portion 51 does not fold. Since the folded portion will become the side leak-proof portion forming sheet 50B in the future, it is preferable that the width of the folded portion is the same length as the side leak-proof portion forming sheet 50B.
  • a folded end portion 51 is formed in the side leakage preventing portion forming sheet continuous body 50Aa by folding it in half.
  • the folded side leakage preventing portion forming sheet continuous body 50Aa is sent to the embossing step.
  • the folded side leakage preventing portion forming sheet continuous body 50Aa is partially separated from the folded end portion 51 inward.
  • a large number of embossed parts 52, 52 are sent to the embossing device 102 so that the embossed convex parts on the peripheral surface of the rail are embossed at regularly arranged parts, and folded back to the side leakage preventing part forming sheet continuous body 50Aa.
  • ⁇ , and the inner surfaces of the opposing side leakage preventing portion forming sheet continuous body 50Aa are joined to each other and sent to the rotary cutter 103.
  • a large number of embossed portions 52, 52,... Are formed from the portion spaced inward from the folded end portion 51 to the opposite end portion. It is preferable.
  • the side leak-proof part is continuous from the continuous side leak-proof part forming sheet 50Aa to the side leak-proof part forming part 5a5 and discontinuous in the wing part forming part 5a6.
  • a side leakage preventing part continuous member 5a having a large number of side leakage preventing part forming parts 5a5 and wing part forming parts 5a6 is produced. .
  • the side leak-proof portion forming portion 5a5 is a folded portion of the side leak-proof portion connecting member 5a that forms the side leak-proof portion 5, and the wing portion forming portion 5a6 is the wing portion.
  • the side leakage preventing part continuous member 5a forming 6 is folded back! /, ! /.
  • the side leakage preventing part continuous member 5a is sent to the first cutting step.
  • the folded end 51 of the side leakage preventing part continuous member 5a is cut linearly and continuously in the longitudinal direction of the side leakage preventing part continuous member 5a by the cutting device 104.
  • the cutting device 104 a force capable of using various devices conventionally used for cutting absorbent articles is preferred, in particular, a combination of a cutter roll and a receiving roll and a method in which the cutter roll is heated! Masle.
  • the side leak-proof portion continuous member 5a with the folded end portion 51 cut is sent to the heat treatment step.
  • one heat treatment apparatus 101A is provided, and the side leakage preventing part continuous member 5a is sent to the heat treatment apparatus 101A, and the side leakage prevention part continuous By blowing hot air on the member 5a, the bulk of the non-woven fabric forming the side leak-proof portion continuous member 5a is recovered.
  • a pair of side leakage preventing part continuous members 5a, 5a was separately prepared.
  • Absorbent body continuum 1 Oa on both sides in the longitudinal direction on the skin contact surface side, the side that becomes side leakage preventive part forming sheet 50Ba is opposed to absorbent body continuum 10a and folded end 51 is absorbed.
  • the main body continuous body 10a is joined so as to be positioned inward in the width direction, and at the predetermined interval corresponding to the length of the napkin 1, the upper and lower surfaces are joined across the width direction to form a seal portion.
  • an absorbent article continuum la is produced.
  • the absorbent article continuum la is sent to the second cutting step, and the absorbent article continuum la is intermittently formed in the longitudinal direction in the second cutting step.
  • the napkin 1 of the present invention (second invention) as an individual absorbent article is obtained by cutting across the width direction at the above-described seal portion.
  • the napkin 1 of the present invention (second invention) is obtained.
  • the hot air treatment step after the embossing step handling at the time of manufacturing is improved, and manufacturing stability is excellent. For example, it becomes easy to align the positions of the continuums.
  • the heat treatment step the thickness of the nonwoven fabric can be easily controlled.
  • the hot air treatment step may be provided after the embossing step, the embossing step being provided after the hot air treatment step.
  • the force that has produced the napkin 1 using the two side leakage preventing part forming sheet continuums 50Aa and 50Ba is used to apply the napkin 1 using the three or more side leakage preventing part forming sheet continuums. It may be manufactured.
  • the two side leakage preventing part forming sheet continuums 50Aa and 50Ba are used by using two hot air treatment devices 101A and 101B, the force S that has been subjected to the hot air treatment,
  • the hot air treatment may be performed using a hot air treatment apparatus.
  • the force provided with the folding step, the embossing step, and the first cutting step is the force of the folding step, the embossing step, and the first cutting step.
  • the hot air treatment process may be provided later.
  • the force S that continuously cuts the folded end portion 51 and the folded end portion 51 may be cut discontinuously.
  • one or a plurality of other side leakage preventing portion forming sheet continuums may be used in the folded side leakage preventing portion forming sheet continuum 50Aa.
  • the absorbent article 1 of the first embodiment is a sanitary napkin, and has a liquid-retaining absorbent layer 11 and a liquid-impermeable leak-proof layer 12, as shown in Figs.
  • a vertically long absorbent main body 10 is provided, and both side portions in the longitudinal direction on the skin contact surface side of the absorbent main body 10 are covered by the pair of side leakage preventing portions 5 and 5.
  • the absorbent layer 11 in the napkin 1 is composed of a liquid-permeable surface sheet 2 and a liquid-retaining absorbent body 4, and the leak-proof layer 12 is composed of a back sheet 3 having air permeability and liquid impermeability.
  • the pair of side leakage preventing parts 5 and 5 are configured to include the opposite side leakage preventing part forming sheets 50, which are opposed to each other.
  • An embossed portion 52 is formed on at least one of the side leakage preventing portion forming sheets 50.
  • the side leak-proof portion forming sheet 50 is opposite to the width of the absorbent main body 10 such that the side leak-proof portion forming sheet 50 facing each other has a folded end 51 inward in the width direction of the absorbent main body 10. It is folded back.
  • An intermediate layer 50C is disposed between the folded side leak-proof portion forming sheets 50, and the intermediate layer 50C is formed on the side leak-proof portion forming sheet 50 that forms the non-skin contact surface side of the side leak-proof portion 5. It is joined to the lower layer 50B.
  • the sanitary napkin 1 (hereinafter also simply referred to as napkin) of the first embodiment will be described in further detail.
  • the napkin 1 is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the absorbent main body 10 (hereinafter also referred to as the main body longitudinal direction).
  • Each of the top sheet 2 and the back sheet 3 is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • the absorbent body 4 is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body, and is sandwiched and fixed between the top sheet 2 and the back sheet 3.
  • the width of the top sheet 2 is substantially the same as the width of the absorber 4, and the back sheet It is formed narrower than the width of the route 3.
  • the top sheet 2 covers the entire surface of the absorbent body 4 on the skin contact surface side.
  • the top sheet 2 and the back sheet 3 are respectively extended from both ends in the longitudinal direction of the absorbent body 4, and the extended portions are bonded to each other by a known bonding method such as heat sealing or bonding with an adhesive.
  • the napkin 1 has a front part A in the longitudinal direction and an excretory part facing part B that is the central area in the longitudinal direction (an excretion part that is disposed mainly facing the liquid excretion part of the wearer). It is divided into a portion having a facing region in the center in the width direction) and a rear portion C (a portion mainly disposed facing the buttocks of the wearer).
  • the front part A is the part that is positioned on the foremost side of the wearer when the napkin is worn
  • the rear part C is the part that is located on the rearmost side of the wearer.
  • region of the absorptive main body 10 is vertically long, The longitudinal direction is in agreement with the main body longitudinal direction.
  • Each of the pair of side leakage preventing parts 5 and 5 in the napkin 1 of the first embodiment will be further described.
  • Each of the pair of side leakage preventing parts 5 and 5 is formed in a vertically long shape as shown in FIG. The longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • Each of the pair of side leakage preventing parts 5 and 5 has substantially the same width, and is arranged between both end parts in the longitudinal direction of the main body.
  • the side leak-proof portion forming sheet 50 forming the side leak-proof portion 5 is joined to the back sheet 3 by the seal portion 8 at the side edge portion of the absorbent main body 10.
  • the side leakage preventing part 5 has a side leakage preventing part forming sheet 50 extending from the side edge of the absorbent main body 10 toward the inside of the width direction of the absorbent main body 10 (hereinafter also simply referred to as the main body width direction), After being folded back outward in the body width direction toward the absorption layer 11 so as to form an inner edge as the folded end 51, it extends outward in the body width direction.
  • the front end portion of the folded side leakage preventing portion forming sheet 50 is joined to the back surface sheet 3 again at the seal portion 8.
  • the seal portion 8 can be formed by a known joining means such as heat sealing or adhesive bonding.
  • the seal part 8 is not included in the side leak-proof part 5.
  • the side leak-proof portion forming sheet 50 is formed from a nonwoven fabric.
  • the side leakage preventing part 5 is divided into an inner part 5A on the inner side and an outer part 5B on the outer side in the body width direction.
  • Intermediate layer 50C absorbs in side leak-proof part 5
  • the main body 10 is arranged between both end portions in the width direction, and extends over the inner portion 5A and the outer portion 5B.
  • the intermediate layer 50C is interposed between the upper layer 50A and the lower layer 50B.
  • the intermediate layer 50C is formed from a nonwoven fabric!
  • the intermediate layer 50C is joined to the back sheet 3 together with the side leakage preventing part forming sheet 50 by the seal part 8 at the side edge part of the absorbent main body 10.
  • the intermediate layer 50C extends from the side edge of the absorbent main body 10 inwardly in the width direction of the main body, and extends to the vicinity of the folded portion 51.
  • the intermediate layer 50C is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body.
  • the shape of the intermediate layer 50C in plan view is substantially the same as that of the side leak-proof portion 5.
  • the intermediate layer 50C, the side leak-proof portion forming sheet 50, and the force many embossed portions 52, 52 In the inner part 5A in the body width direction of the side leakage preventing part 5, the side leakage preventing part forming sheet 50 is formed with the intermediate layer 50C and the side leakage preventing part formed by the embossed part 52 being formed. Joined with sheet 50! / ,!
  • the upper layer 50A and the intermediate layer 50C are joined at the side leakage preventing portion 5 and the upper layer 50A and the intermediate layer 50C are at least partially separated from each other. Preferable from the perspective of Tatsuyon! /.
  • the inner part 5A is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • the inner portion 5A has a predetermined width and extends between both end portions in the longitudinal direction of the side leak-proof portion 5.
  • the inner portion 5A is formed with a large number of embossed portions 52, 52, etc. formed by the embossed portion 52, and the rigidity is lower than that of the outer portion 5B.
  • the folded end 51 is preferably formed by folding the side leak-proof portion forming sheet 50 so as not to be folded. As shown in FIG. 25, the folded end 51 has a rounded shape, and comes into soft contact with the skin of the napkin wearer, so that the side leak-proof portion 5 has excellent fit.
  • the inner part 5A is a laminate of three layers of nonwoven fabric (upper layer 50A, lower layer 50B and intermediate layer 50C). It has a structure, is bulky, and has improved cushioning properties. Further, the inner portion 5A is enhanced in the leakproof property of the side leakproof portion 5 having a high degree of solidity with respect to the topsheet 2 due to its bulkiness.
  • the opposite upper layer 50A and lower layer 50B formed by the embossed portion 52 are at least partially separated from each other, so that the side leak-proof portion 5 is flexible and conforms to the body. And it has excellent cushioning properties.
  • the outer portion 5B is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • the outer portion 5B has a predetermined width and extends between both end portions in the longitudinal direction of the side leakage preventing portion 5.
  • the outer portion 5B is a portion excluding the inner portion 5A of the side leakage preventing portion 5.
  • the intermediate layer 50C and the lower layer 50B are joined together by a number of embossed portions 52, 52, as shown in FIG. 25 and FIG.
  • the rigidity of the is increased. Even when the inner part 5A is turned over when the napkin is worn, the outer part 5B having high rigidity is not easily deformed, so that the side leakage preventing part 5 is prevented from being turned over in the entire width direction of the main body.
  • the embossed portions 52 in the outer portion 5B are arranged in a so-called staggered pattern, and the individual embossed portions 52 are each formed discontinuously in a circular shape in plan view. ing.
  • the embossed portion 52 has a diameter of 0.5 to 10 mm, particularly preferably !! to 5 mm, from the viewpoint of the touch, flexibility and strength of the side leakage preventing portion 5.
  • the distance between the embossed parts 52 at the closest distance is 1 to 10 mm, especially 2 to 5 mm in the longitudinal direction of the main body, especially 2 to 5 mm. ⁇ 10 mm, particularly 2 to 5 mm.
  • the distance between the centers may not be the longitudinal direction and the width direction. Therefore, the longitudinal direction of the main body and the width direction of the main body are virtually the longitudinal direction line connecting the embosses and the width direction line. In some cases, it is determined by the distance between the virtual line and the center of the embossed portion 52 at the closest distance.
  • the width of the inner part 5A in the side leak-proof part 5 is 2 to 20 mm, particularly 5 to 10 mm. It has a preferable width together with the 1S outer part 5B, and the side leak-proof part 5 is excellent. Flexibility And it's preferred to get body following ability.
  • the side leak-proof portion 5 will be further described. It is preferable that the side leak-proof portion 5 is not joined to the inner side partial force in the width direction of the main body with respect to the seal portion 8 and the topsheet 2. However, at both ends in the longitudinal direction of the main body, it is preferable that the portion between the folded end portion 51 and the seal portion 8 is joined to the topsheet 2 in the width direction of the main body or in the vicinity of the folded end portion 51.
  • the folded end portion 51 of the side leak-proof portion 5 is preferably at least partially separated from the topsheet 2 so that the side leak-proof portion 5 forms a three-dimensional barrier. Further, the folded end portion 51 as the inner edge portion is formed with a groove 7 to be described later, so that the topsheet 2 sinks around the groove 7, so that the three-dimensionality of the side leakage preventing portion 5 with respect to the topsheet 2 is increased. This effectively prevents the movement of bodily fluid flowing on the top sheet 2 from the inside in the width direction of the main body to the outside.
  • the width of each of the pair of side leakage preventing portions 5 and 5 described above preferably has the following dimensions in order to obtain good leakage prevention and wearing feeling.
  • the seal portion 8 and an inner edge in the width direction of the main body are arranged on the longitudinal center line of the wing portion 6.
  • the length of the gap measured along the surface of the side leak-proof portion 5 in the width direction of the main body is preferably 10 to 30 mm, particularly 15 to 25 mm.
  • the napkin 1 of the first embodiment will be further described. As shown in Fig. 24, the napkin 1 has a pair of wings 6 and 6 that extend from both side edges in the longitudinal direction of the absorbent main body 10. Each of the pair of wing portions 6 and 6 is formed from a side leakage preventing portion forming sheet 50 extending from the absorbent main body 10. The pair of wing parts 6 and 6 are formed in the excretory part facing part B.
  • Each of the pair of wing parts 6 and 6 and the side leakage preventing part 5 on the same side in the longitudinal direction of the main body are integrally formed from one side leakage preventing part forming sheet 50.
  • One sheet of the side leakage preventing part forming sheet 50 is divided into a side leakage preventing part 5 and a wing part 6 with the seal part 8 as a boundary.
  • the upper layer 50A extends from the absorbent main body 10, and each of the pair of wing portions 6 and 6 is formed from the upper layer 50A.
  • the shape of the seal portion 8 is such that when the wing portion 6 provided in a row is bent along the edge of the shorts crotch, it easily fits with the edge of the shorts crotch.
  • the middle part of the main body In the middle part of the main body, it has a shape constricted inward in the width direction of the main body. Further, in the excretory part facing part B, the part of the outer part 5B connected to the wing part 6 has a shape constricted inward in the body width direction along the shape of the seal part 8.
  • the wing portion 6 bent along the edge portion of the shorts crotch is fixed to the outer surface of the shorts.
  • a wing adhesive portion 6a is provided.
  • the intermediate layer 50C force extends from both side edges in the longitudinal direction of the absorbent main body 10, and each of the pair of wings 6, 6 and the intermediate layer 50C are embossed. Are joined by a number of joints 59, 59. In the inner part of the wing part 6 in the width direction of the body, the intermediate layer 50C force forms the non-skin contact surface side of the wing part 6
  • the intermediate layer 50C force absorbing main body 10 extends from the inside to the outside across the seal portion 8 to form a part of the wing portion 6, so that the wing portion 6
  • the strength in the vicinity of the base of the wing is increased, and when the wing 6 is pulled when the napkin is worn, the vicinity of the base of the wing 6 is prevented from being torn.
  • the intermediate layer 50C extends outward in the width direction of the absorbent main body 10 rather than the wing adhesive portion 6a formed on the non-skin contact surface of the wing portion 6.
  • the wing adhesive portion 6a is formed by applying an adhesive to the non-skin contact surface of the intermediate layer 50C, and the outer edges of the wing adhesive portion 6a and the intermediate layer 50C in the body width direction are respectively connected. Yes.
  • the wing portion 6 Since the outer portion of the wing portion 6 in the width direction of the main body is formed only from the side leakage preventing portion forming sheet 50, the wing portion 6 is highly flexible and has excellent operability.
  • the joints 59 in the wing part 6 are arranged in a so-called staggered pattern, and the individual joints 59 are each formed discontinuously in a circular shape in plan view. .
  • the diameter of the joint portion 59 is larger than the embossed portion 52;! ⁇ 15m m, in particular 1.5 to 10 mm, is preferable from the viewpoint of the strength and feel of the wing part 6.
  • the distance between the joints 59 that are at the closest distance is the “longitudinal direction I-port”; ⁇ 10 mm, especially 2 to 5 mm, “width of the main body
  • mouth” is preferably 1 to 10 mm, particularly 2 to 5 mm from the same viewpoint.
  • the embossed area ratio of the embossed part 52 of the side leakage preventing part 5 in the excretory part facing part B is smaller than the embossed area ratio of the joint part 59 in the wing part 6 from the viewpoint of the soft touch.
  • the embossed area ratio of the wing part is large, specifically, it is preferably about 10 to 50%.
  • the embossed area ratio means the bottom area of the emboss, and is measured using a NEXUS image analysis system (Ver. 4.2).
  • the embossed area ratio of the side leak-proof part 5 is 5 to 50%, particularly 10 to 30% higher than the embossed area ratio of the wing part 6. Is preferable from the viewpoint described above.
  • the embossed portion 52 of the side leakage preventing portion 5 and the joint portion 59 of the wing portion 6 are the distance between the embossed portion 52 or the joint portions 59 at the closest distance (
  • the distance between the centers is equal in the width direction of the main body and in the longitudinal direction of the main body, and the diameter of the embossed portion 52 is smaller than the diameter of the joint portion 59.
  • the embossed area ratio is smaller than the embossed area ratio in the wing part 6.
  • a groove 7 is provided on the skin contact surface side of the absorbent main body 10 in the napkin 1.
  • the groove 7 is formed of a pair of embossed grooves extending in the longitudinal direction of the main body and embossed grooves extending in the width direction of the main body at both ends in the longitudinal direction of the embossed groove.
  • the groove 7 is formed so as to extend between the front and rear end portions of the excretory portion facing portion B.
  • Each of the pair of embossed grooves extending in the longitudinal direction of the main body has a shape in which three portions that are convexly curved outward in the width direction of the main body are connected in the longitudinal direction of the main body.
  • the embossed groove extending in the width direction of the main body has a convex shape outward in the longitudinal direction of the main body.
  • the top sheet 2 and the absorber 4 are joined by the groove 7.
  • the folded end 51 of the side leakage preventing part 5 is located just outside the groove 7.
  • nonwoven fabrics such as air-through nonwoven fabric, spunbond nonwoven fabric, meltblown nonwoven fabric, spunlace nonwoven fabric, and needle punched nonwoven fabric obtained by hot-air treatment of a heat-bonded fiber web manufactured by the card method.
  • fiber bonding means in these non-woven fabrics.
  • bonding by soldering or bonding by thermal fusion can be used.
  • mechanical entanglement of fibers such as spunlace nonwoven fabric may be used.
  • the hot-bonded fiber web obtained by the card method is treated with hot air as a non-woven fabric to prevent strong compression.
  • An air-through nonwoven fabric made into a nonwoven fabric is most preferably used.
  • the basis weight is measured, for example, as follows.
  • the side leakage preventing part forming sheet 50 is cut into a size of lOmm X IOmm or more, preferably 30 mm X 30 mm or more, and a measuring piece having a total area of 250 mm 2 or more is taken from one napkin, and the weight of the measuring piece is maximized.
  • the nonwoven fabric forming the intermediate layer 50C the same material as the side leakage preventing portion forming sheet 50 described above can be used.
  • a material having high adhesiveness with the wing adhesive portion 6a is selected as the nonwoven fabric forming the intermediate layer 50C. It is preferable to prevent the so-called adhesive residue that remains on the shorts side when a part of the wing adhesive portion 6a is removed when the wing portion 6 is removed from the shorts or the like. From such a viewpoint, a spunbond nonwoven fabric is preferred as the nonwoven fabric.
  • a heat-bonded fiber web manufactured by the card method is used as a material for forming the intermediate layer 50C. It is also preferable to use.
  • the material for forming the top sheet 2, the back sheet 3 or the absorbent body 4 various materials that have been conventionally used for absorbent articles such as sanitary napkins are used without particular limitation. be able to.
  • the intermediate layer 50C is not disposed in the vicinity of the folded portion 51 in the side leakage preventing portion 5.
  • the length of the intermediate layer 50C in the main body width direction in this modification is shorter than the intermediate layer of the first embodiment described above.
  • An end 51C on the inner side in the body width direction of the intermediate layer 50C is located on the outer side when the side leakage preventing part 5 is divided into two in the body width direction.
  • the outer end of the intermediate layer 50C in the width direction of the main body extends to the vicinity of the base of the wing portion 6 and is adjacent to the inner end of the wing adhesive portion 6a in the width direction of the main body. is doing.
  • the wing adhesive portion 6a in the present modification is formed by applying an adhesive to the non-skin contact surface of the side leakage preventing portion forming sheet 50.
  • the pair of side leakage preventing parts 5 and 5 are preferably formed over the entire length of the absorbent main body 10, but at least at the front and rear end parts of the excretory part facing region. What is necessary is just to form over.
  • the intermediate layer 50C in the side leak-proof portion 5 may be bonded to the force S bonded to the lower layer 50B and the upper layer 50A.
  • each of the pair of wing portions 6 and 6 may be formed only from the force intermediate layer 50C formed from the upper layer 50A, or the upper layer 50A and It may be formed from the intermediate layer 50C.
  • the absorbent article of the present invention may be a sanitary napkin, but may be a panty liner, an incontinence pad, or the like.
  • the absorbent article according to the first embodiment of the present invention is a sanitary napkin 1 and, as shown in FIGS. 28 to 31, a top sheet 2, a back sheet 3, and both sheets 2 and 3.
  • An absorbent main body 10 having an absorbent body 4 interposed between the pair of wing parts 5 and 5 and a pair of rear flaps 7 extending outward in the width direction from both sides of the absorbent main body 10, respectively. 7 and a pair of side leak-proof portions 6 and 6 that cover both side portions of the absorbent main body 10 on the skin contact surface side.
  • the “skin contact surface side” refers to the side (surface) that is disposed on the skin side of the wearer when worn, out of the front and back sides (surface) of each member such as the absorbent main body. ). Further, the “non-skin contact surface side” is a side (surface) disposed on the opposite side to the wearer's skin side when worn. Unless otherwise specified, the “longitudinal direction” is a direction along the longitudinal direction of the absorbent article, and the “width direction” is a direction along the width direction of the absorbent article.
  • the excretory part facing part A is a region facing the excretory part of the wearer as shown in FIG. 28, and has a wing part 5 as in the present invention (fourth invention).
  • the absorbent article is a part having wing parts 5 on both sides.
  • the area located in front of the excretory part facing part A is referred to as the front part B, and the area located behind the excretion part facing part A is referred to as the rear part C.
  • the absorbent main body 10 has a liquid holding surface sheet 2, a liquid-impermeable or water-repellent back sheet 3, and a liquid holding medium disposed between both sheets 2 and 3. It has a sex absorber 4.
  • the absorber 4 has a substantially rectangular shape with rounded front and rear edges in plan view.
  • the top sheet 2 covers the entire upper surface of the absorber 4 as shown in FIGS.
  • the front and rear edges of the topsheet 2 are rounded, and the front and rear edges of the absorber 4 Each extends in the longitudinal direction.
  • the side edges of the top sheet 2 are straight along the longitudinal direction, and are slightly extended from the side edges of the absorbent body 4 in the width direction. Are separated.
  • the back sheet 3 covers the entire area of the lower surface of the absorber 4, as shown in Figs.
  • the front and rear edges of the back sheet 3 are rounded and extend from the front and rear edges of the absorber 4 in the longitudinal direction. Both side edges of the back sheet 3 extend in the width direction from each side edge of the absorber 4.
  • the non-skin contact surface side of the absorbent main body 10 has the absorbent body 10 and the crotch portion of the shorts on the non-skin contact surface side of the back sheet 3.
  • An anti-slip agent 11 is provided to secure the upper surface (inner surface) of.
  • the slip stopper 11 is formed of an adhesive or the like (the same applies to the slip stoppers 55 and 75 described later).
  • the top sheet 2, the back sheet 3, and the absorbent body 4 various materials conventionally used in absorbent articles such as sanitary napkins can be used without particular limitation.
  • a non-woven fabric having liquid permeability can be used as the surface sheet 2.
  • a liquid-impermeable or water-repellent film or the like can be used as the absorbent body 4, it is possible to use an absorbent core mainly composed of a fiber aggregate such as pulp fiber, short fiber, or long fiber web, which has been conventionally used, and coated with a covering sheet. it can.
  • the absorbent core contains a super absorbent polymer! /, You can! /.
  • the back sheet 3 preferably has moisture permeability (breathability).
  • a moisture-permeable sheet for example, a thermoplastic resin added with an inorganic compound or an organic compound filler is melt-extruded with a T-die or a circular die force to form a film.
  • Resin sheet obtained by stretching or biaxial stretching, composite nonwoven fabric (S, SMS, SMMS, etc.) in which spunbond nonwoven fabric (S) and melt blown nonwoven fabric (M) are composited, air-through nonwoven fabric, SMS, etc.
  • S composite nonwoven fabric
  • M melt blown nonwoven fabric
  • the absorber 4 has a two-layer structure including an upper absorber 41 and a lower absorber 42 as shown in FIG.
  • the upper absorbent body 41 is shorter in length and width than the lower absorbent body 42 in a plan view, and has a shape smaller than the center first seal line 12 described later. Are not joined.
  • the upper absorbent body 41 is located closer to the center in the longitudinal direction and the width direction of the lower absorbent body 42, and by extension, is located closer to the center in the longitudinal direction and the width direction of the absorbent main body 10. Accordingly, the upper absorbent body 41 forms a so-called middle-high region in the absorbent main body 10.
  • a central first seal line 12 and a central second seal line 13 are provided, which are integrally consolidated with 42.
  • the central first seal line 12 is provided in a ring shape in a region not covered by the side leakage preventing part 6 on the upper surface of the topsheet 2 so as to surround the upper absorbent layer 41 in plan view.
  • the pair of front and rear center second seal lines 13 and 13 have a substantially semicircular arc shape, and are continuous with the center first seal line 12 at the front and rear sides of the front and rear of the center first seal line 12, respectively. Provided.
  • the center first seal line 12 and the center second seal line 13 do not join the force sheet sheet 2 and the upper absorbent body 41 to join the surface sheet 2 and the lower absorbent body 42. Therefore, the upper absorbent body 41 is enclosed in a closed space composed of the top sheet 2 and the lower absorbent body 42.
  • the wing portion 5 has both side portions of the absorbent body 10 extending at the excretory portion facing portion A.
  • the wing portion 5 is used by being folded back to the lower surface (outer surface) side of the crotch portion of underwear such as shorts.
  • the wing portion 5 has a substantially trapezoidal shape in which the lower base (side longer than the upper base) is located on the side of the absorbent main body 10 in plan view.
  • a slip stopper 55 is provided on the non-skin contact surface side of the wing portion 5. With the slip stopper 55, the wing part 5 folded back to the bottom (outer surface) side of the crotch part of the shorts can be secured to the crotch part at the time of use.
  • the rear flap 7 extends from both sides of the absorbent main body 10 at the rear portion C.
  • the rear flap 7 is used by being attached to an underwear such as shorts that is not folded back while extending from the absorbent main body 10. However, after The part flap 7 may be folded back to the skin contact surface side or the non-skin contact surface side of the absorbent main body 10 in order to make it compact in an individual packaging form or the like.
  • the rear flap 7 is shown in Figure 28
  • a slip stopper 75 is provided on the non-skin contact surface side of the rear flap 7.
  • a slip stopper 75 allows the rear flap 7 to be fastened to the shorts when in use.
  • a straight line connecting both bases of the wing portion 5 is a boundary line between the absorbent main body 10 and the wing portion 5.
  • the boundary line between the absorbent main body 10 and the rear flap 7 is directed from the position closest to the rear part C of the boundary line between the absorbent main body 10 and the wing part 5 toward the rear end of the absorbent main body 10 along the longitudinal direction. It is a straight line that extends.
  • the side leak-proof portion 6 is a component part that covers both side portions of the absorbent main body 10 on the skin contact surface side. Each of the both sides on the contact surface side is provided so as to extend substantially along the longitudinal direction of the absorbent main body 10.
  • the side leak-proof portion 6 includes a water-repellent side sheet 61.
  • the side sheet 61 is folded in half in the width direction to form a folded portion at the inner edge of the side leakage preventing portion 6 to form a two-layer region.
  • 80% or more of the planar view area of the side leak-proof portion 6 is a two-layer region.
  • the inner edge portion of the side leak-proof portion 6 is linear along the longitudinal direction of the absorbent main body 10. With this configuration, when installed, the inner edge side force S in the side leak-proof portion 6 is opened as a pocket on the inner side in the width direction of the absorbent main body 10.
  • the water-repellent side sheet 61 various water-repellent materials that are conventionally used in absorbent articles such as sanitary napkins can be used without particular limitation, and they have moisture permeability. More preferably.
  • the side sheet 61 may be liquid impermeable.
  • the material of the site sheet 61 is, for example, a spunbond nonwoven fabric, a sheet in which a spunbond nonwoven fabric (S) and a melt blown nonwoven fabric (M) are combined (for example, SM, SMS, SMMS), a heat roll nonwoven fabric, or an air-through nonwoven fabric. And water repellent (hydrophobic) non-woven fabrics.
  • the smoothness of the surface of the sheet is reduced. Since the strength, feel and physical properties (strength, etc.) of the sheet are good, it is preferable in that the tear resistance of the wing part 5 and the transfer resistance of the anti-slipping agent 55 are good. In addition, the use of non-woven fabric made by the air-through method is preferable in that it can be easily obtained in thickness even at a low basis weight, giving it a good feeling (crispy feeling) and good touch.
  • the side sheet 61 is preferably an embossed sheet in which a large number of embossed recesses having no corners, such as a substantially circular shape, an ellipse shape, and a rounded rectangle shape, are formed on the nonwoven fabric.
  • embossed recesses By forming embossed recesses, the contact area with the skin can be reduced, and against the problem of fluff peculiar to non-woven fabrics, by forming embossed recesses without corners, fluffing (mainly due to fiber breakage) can be prevented. When you feel better, there are benefits.
  • the side seats 61 extend from both sides of the absorbent main body 10 to form the wing part 5 and the rear flap 7 respectively.
  • the wing part 5 and the rear flap 7 are different in the position (excretion part facing part A / rear part C), the usage method (use by folding / use without folding), etc.
  • the basic configuration particularly the configuration in the thickness direction
  • the description regarding the wing part 5 described above or below also applies to the rear flap 7 as appropriate.
  • the side leak-proof portion 6 includes a front sheet B of the absorbent main body 10 on the front end portion B and the outer edge portion thereof by the front seal wire 84 in the front portion B. Or it is bonded to the back sheet 3.
  • the front seal line 84 is formed by heat sealing. Note that seal lines 81 and 83 to be described later are similarly formed by heat sealing.
  • the side leakage preventing part 6 is located between the vicinity of the front base of the wing part 5 and the vicinity of the rear base of the wing part 5! /
  • the edge side is joined to the back sheet 3 of the absorbent main body 10 by a heat seal line provided discontinuously in the longitudinal direction.
  • the heat seal line is formed by intermittently providing a plurality of excretion part facing part seal lines 81 extending in the width direction in the longitudinal direction. “Near the root of wing part 5” means an area within a radius of 6 mm from the base of wing part 5, and therefore it may be located on the absorbent main body 10 side with respect to the base of wing part 5. It may be located on the wing 5 side.
  • the plurality of excretory part-facing part seal lines 81 are provided on the wing part 5 side.
  • the outer end portion is provided so as to form a convex curved line (indicated by a two-dot chain line in FIG. 32) inward in the width direction of the absorbent main body 10.
  • the excretion part facing part seal line 81 is not limited to a continuous line shape, and may be a broken line (including a dot line). Further, the excretion part-facing part seal line 81 may have the same width in the width direction in order to form a curved shape convex inward in the width direction. However, as shown in FIG. If it is formed short near the center and long near the rear and rear, it is possible to keep the joints (in terms of area / strength) near the front and rear (in terms of area / strength), and the seal line 81 is less likely to become hard. It is preferable from the point.
  • the side leak-proof portion 6 has a rear portion C on the outer edge side and rear end side of the rear portion C by a rear-side seal wire 83. It is joined to the seat 3 or the face sheet 2.
  • the rear seal line 83 is provided on the front end portion side and the rear end portion side of the side leak-proof portion 6 located in the rear portion C and is separated in the longitudinal direction.
  • the heat seal line for joining the side sheet 61 and the back sheet 3 will be described from another viewpoint.
  • the side sheet 61 and the back sheet 3 are joined to each other by a heat seal line (front seal line 84, rear seal line 83, excretion part facing part seal line 81) in an area outside the absorbent body 4 in the width direction.
  • the heat seal line extends along the front end side force of the absorbent main body 10 and the vicinity of the base of the front side of the wing part 5! It extends from the rear end side of the main body 10 to the vicinity of the base of the rear side of the wing part 5 (the rear seal line 83), but it is discontinuously provided in the longitudinal direction between the vicinity of both bases.
  • Le, ru (excretion part facing part seal line 81).
  • the surface sheet 2 has a side-proofing structure by means of the seal wires 84, 81 and 83 provided in the side leakage-proofing part 6 in a region overlapping the side leakage-proofing part 6 in plan view. It is joined to the back sheet 3 of the absorbent main body 10 through the leaking part 6. In addition, the top sheet 2 does not overlap with the side leak-proof part 6 in a plan view! /, In the area! /, Even though the front seal line 84 and the rear seal line 83 are used, Bonded to sheet 3.
  • the front seal line 84 extends continuously in a substantially semicircular arc shape from the left side edge of the front part B of the absorbent body 10 to the right side edge via the front end edge.
  • the rear seal line 83 continuously extends to the rear edge of the rear part C of the absorbent main body 10.
  • the rear flap 7 is joined by a rear seal line 83 extending from the front end side and the rear end side in the side leakage preventing part 6, respectively.
  • the rear seal line 83 is provided on the front end side and the rear end side of the flap base end 73 so as to be separated in the longitudinal direction.
  • each of the pair of side leakage prevention parts 6 has a side leakage prevention part seal line 62 including a side leakage prevention part first seal line 63 and a side leakage prevention part second seal line 64. It is provided.
  • the side leak-proof portion first seal line 63 is provided in the excretory portion facing portion A, and is curved to protrude outward in the width direction and extends in the longitudinal direction.
  • the length of the side seal portion first seal line 63 is substantially the same as the length of the base end portion of the wing 5 along the longitudinal direction of the absorbent main body 10.
  • the side leakage preventing part second seal line 64 is provided separately from each of the front part B and the rear part C, and has a zigzag shape along the longitudinal direction.
  • the side leak-proof portion first seal line 63 is close to the inner side in the width direction of the excretion portion-facing portion seal line 81 and joins the side leak-proof portion 6 to the surface sheet 2.
  • the side leakage preventing part first seal line 63 and the side leakage preventing part second sealing line 64 are the side leakage preventing part second sealing line 64, the side leakage preventing part first sealing line 63 and the side leakage preventing part second. It continues from the front part B through the excretory part facing part A to the rear part C in the order of the seal line 64.
  • the side leak-proof portion 6 is joined to the upper surface of the top sheet 2 of the absorbent main body 10 by the side leak-proof portion seal wire 62.
  • the side leakage preventing part seal wire 62 can be provided so that the side leakage preventing part 6 is fixed to the absorber 4 together with the surface sheet 2, and the side leakage preventing part 6 can be provided without interposing the surface sheet 2. 6 can be fixed directly to the absorbent body 4. [0296]
  • the region between the inner edge of the side leak-proof portion 6 and the side leak-proof portion seal wire 62 is not joined to the top sheet 2, and forms a pocket with the top sheet 2. .
  • the pocket is opened when worn, and body fluid that has moved outward in the width direction can be captured in the opened pocket, thereby improving leakage prevention.
  • it since it can be easily understood visually that the leak-proof property in the width direction is high, it is preferable in terms of giving the wearer a sense of security.
  • the side leakage preventing part seal spring 62 absorbs all or part of the fluid in a plan view in that the body fluid trapped in the pocket is smoothly absorbed into the absorbent body 4 and the leakage prevention performance is further improved. It is preferable to overlap with the body 4. The body fluid trapped in the pocket is absorbed by the absorber 4 while moving from the front of the pocket to the back, or after reaching the back of the pocket, it is returned to the absorber 4 and absorbed.
  • the constituent members of the sanitary napkin 1 according to the first embodiment include various adhesives (not shown) such as a hot-melt adhesive in addition to the seal wires 81, 83, 84, and 62 described above. Are further joined.
  • the adhesive is used mainly for the purpose of reinforcing the bonding by the seal lines 81, 83, 84 and 62, and, as a secondary measure, the liquid force S held by the absorbent body 4, the pressure by the wearer's movement, etc. It is provided for the purpose of improving the effect of preventing leakage caused by bleeding.
  • the adhesive is provided, for example, between the absorbent body 4 and the back sheet 3, and between the side leak-proof portion 6 and the top sheet 2.
  • the adhesive is preferably provided between the side sheet 61 and the back sheet 3 between the bases of the wing part 5.
  • Adhesive is applied continuously (in the form of a plane)! /, May! / (V, loose solid coating) 1S, intermittently considering the breathability of the coated area It is preferable that it is coated.
  • the intermittent coating form include a spiral shape, a stripe shape extending in the width direction, an ⁇ shape, and a dot shape.
  • the excretion part-facing part seal line 81 is formed by heat sealing, but other than that, for example, it is formed by ultrasonic sealing, high-frequency sealing, or adhesive. It ’s the power to do.
  • the thickness of the absorbent main body 10 is preferably 5 mm or less, more preferably 3.5 mm or less in the excretory part facing part A.
  • the thickness of the absorbent main body 10 is preferably 3 mm or less, more preferably 2 mm or less in the front part B and the rear part C.
  • Absorbent body 10 If the thickness is set in such a range, it will fit more along the front and back direction of the body where it will be difficult to feel uncomfortable at the time of wearing, and the pocket will open at the time of wearing. Therefore, it is preferable.
  • the thickness of the absorbent main body 10 is measured by the following measuring method.
  • a thickness of 5 cN / cm 2 is applied to the sample and the thickness under this condition is measured.
  • Wear pressure varies depending on body parts, individual differences, state (sitting / moving), etc., but clothing such as shorts should be worn in the central area (near the excretion point) opposite the excretion part. in a state in which external pressure is not fragments but to use, since the load of no load ⁇ 5 cN / cm @ 2, was measured at the load (5cN / cm 2).
  • a thickness gauge PEACOCK DIAL PRIGHT GAUGES R5_C (manufactured by OZAKI MFG.CO ⁇ TD) was used for the thickness measurement. At this time, place a plate (acrylic plate with a thickness of about 5 mm) in the measurement area between the tip of the thickness gauge and the product, and adjust the size of the plate so that the load is 5 cN / cm 2 .
  • the shape of the plate shall be circular or square.
  • the tear strength at the base of the wing part 5 should be 500 ⁇ ;! OOOcN force S Even if the slip stopper 55 of the wing part 5 is peeled off the crotch part of the shorts after preferred use In order to further ensure that tearing starting from the root of part 5 does not occur, it is more preferably 650 cN or more.
  • the tear strength of the wing part 5 is measured by the following measuring method.
  • the test piece should be 75mm front and back based on the center of the wing part in the longitudinal direction of the absorbent article in the product form (total 150mm: the length where the root part of the wing part remains reliably). Then, the absorbent article in the product form was cut in the width direction to make a sample, and further, a cut was made in the longitudinal direction at a length of 15 mm from the base part of the wing part, and this was used as a test piece.
  • the upper part of the Tensilon tensile tester is sandwiched between the absorbent main body part of the obtained test piece (the wing part is not sandwiched), and the lower part of the wing part is folded back by cutting into the lower chuck. was measured.
  • the absorbent main body 10 is disposed on the upper surface (inner surface) of the crotch portion (not shown) of the shorts, and is fixed to the crotch portion by the slip stopper 11.
  • the rear flap 7 is disposed on the upper surface (inner surface) of the shorts, and is fixed to the shorts by the slip stopper 75. Then, as shown in FIG. 33, the wing portion 5 is folded back to the lower surface (outer surface) side of the crotch portion, and the wing portion 5 is fixed to the outer surface of the crotch portion by the slip stopper 55, thereby shifting the position deviation. Can be installed while preventing.
  • the side sheet 61 and the back sheet 3 have a heat seal line (front seal line) in a region outward in the width direction from the absorbent body 4. 84, the rear seal line 83, and the excretion part facing part seal line 81) .
  • the heat seal line extends from the front end side of the absorbent main body 10 to the vicinity of the root of the front side of the wing part 5. It extends from the rear end side of the absorbent body 10 to the vicinity of the base of the rear side of the wing part 5 along with! /, And (front seal line 84).
  • the wing part 5 In the vicinity of the bases of the both ends, it is discontinuously provided in the longitudinal direction (excretion portion facing portion seal line 81). Therefore, the wing part 5 is not easily broken by the damage caused by the heat seal wire. Further, the folding position of the wing part 5 is not limited, and the wing part 5 can be easily wound around the short part of the shorts. In addition, the absorbent main body 10 with little increase in the longitudinal rigidity of the absorbent main body 10 due to the rigidity of the heat seal wire is excellent in wearability along the body.
  • the heat seal line provided discontinuously between both bases extends in the width direction. It is formed by intermittently providing a plurality of excretion part facing part seal lines 81 in the longitudinal direction. Therefore, it is possible to achieve both the effect of preventing the wing portion 5 from breaking and the effect of preventing the rigidity of the absorbent main body 10 from increasing.
  • the plurality of excretory part facing part seal lines 81 are provided so as to form a convex curved line inward in the width direction of the absorbent main body 10 at the outer end force S on the wing part 5 side. Therefore, when the wing part 5 is folded back to the back sheet 3 side of the absorbent main body 10, the fold line of the wing part 5 is formed to bend along the curve line. Therefore, since the wing part 5 is folded back along the side edge shape of the short part of the shorts (usually recessed inward in the width direction), the sanitary napkin 1 is attached to the shorts. High stability.
  • the side leak-proof portion 6 is close to the inner side in the width direction of the excretory portion-facing portion seal line 81, and the side leak-proof portion seal line 62 that joins the side leak-proof portion 6 to the surface sheet 2 62 (Side leakage preventing part first seal line 63) is provided. Therefore, the rigidity of the region on the inner side in the width direction of the excretory part-facing part seal line 81 is increased, and the folding line is clearly formed. As a result, the folding operability of the wing part 5 is improved.
  • the plurality of excretory part-facing part seal lines 81 can be arranged so as to extend parallel to the width direction of the absorbent main body 10, as shown in FIG. Force
  • the outer end portion force S on the wing portion 5 side can be arranged IJ so as to be inclined outward in the longitudinal direction of the absorbent main body 10.
  • the seals in the direction opposite to the direction of the urging force, the point of joining, the hardness of the seal line 81, and the direction of the force applied to the wing part 5 are obtained. Since the spring 81 extends, it is preferable in that the force is evenly distributed.
  • the one on the front end side of the absorbent main body 10 is absorbent on the outer end part on the wing part 5 side. Inclined toward the front end of the main body 10, and among them, the closer to the front end of the absorbent main body 10, and the excretion part-facing section line 81 has a larger inclination angle. Similarly, of the plurality of excretory part facing part line 81, the outer end of the absorbent main body 10 is inclined toward the rear end of the absorbent main body 10 at the rear end side of the absorbent main body 10. is doing.
  • the wing part 5 is folded back to the back sheet 3 side of the absorbent main body 10.
  • the folding line is a curved line that protrudes inward in the width direction
  • the excretory part-facing part seal line 81 is formed in the side edge of the crotch part of the shorts (usually inward in the width direction). Since the wings 5 are arranged so as to extend in a substantially orthogonal direction, the effect of preventing the wing portion 5 from being broken is extremely high.
  • FIG. 35 shows the wing part 5 and the excretory part facing part A in the vicinity thereof in the sanitary napkin of the second embodiment of the absorbent article of the present invention (fourth invention).
  • the sanitary napkin 1 of the second embodiment is different from the sanitary napkin 1 of the first embodiment in that the excretory part facing part seal line 81 is not provided, and the rear end part of the front seal line 84 and The difference is that the front end portion of the rear seal line 83 is curved outward in the width direction of the absorbent article 1 and located at the wing portion 5.
  • the heat seal line that joins the side sheet 61 and the back sheet 3 in the region outward in the width direction from the absorbent body 4 It is not provided between the vicinity of the front base and the vicinity of the rear base of the wing part 5. Therefore, the same effects as the sanitary napkin 1 of the first embodiment are exhibited.
  • the rear end portion of the front seal line 84 and the front end portion of the rear seal line 83 are curved toward the outer side in the width direction of the force-absorbing material 1 and are positioned at the wing portion 5. Therefore, in particular, the wing part 5 has a high anti-breakage effect, and when the wing part 5 is folded back to the back sheet 3 side of the absorbent main body 10 when installed, the side edge side force absorption in the side leak-proof part 6 is absorbed. It opens as a pocket on the inner side of the body 10 in the width direction and is very effective in preventing side leakage.
  • the wing part 5 may be composed of a laminated body of a wing upper layer 51 and a wing lower layer 52, as shown in FIGS. 36 (a) and 36 (b).
  • the wing upper layer 51 is formed from side sheets 61 extending from both sides of the absorbent main body 10
  • the wing lower layer 52 is formed from the back sheet 3 extending from both sides of the absorbent main body 10.
  • the wing base 5 has a wing base end 53, which is the base end thereof, and a wing upper layer 51.
  • the wing front end portion 54 which is a layered body with the wing lower layer 52, other than the wing base end portion 53, consists of only the wing upper layer 51.
  • Wing upper layer 51 and wing lower layer 52 are preferably joined by an adhesive too! /.
  • FIG. 37 shows the wing part 5 and the excretory part facing part A in the vicinity thereof in the sanitary napkin of the third embodiment of the absorbent article of the present invention (fourth invention)!
  • the sanitary napkin 1 of the third embodiment is different from the sanitary napkin 1 of the second embodiment in the bending direction of the rear end portion of the front seal line 84 and the front end portion of the rear seal line 83.
  • the rear end portion of the front seal line 84 and the front end portion of the rear seal line 83 are curved inward in the width direction of the absorbent article 1, and the excretory portion facing portion A of the absorbent main body 10 Is located.
  • the heat seal line that joins the side sheet 61 and the back sheet 3 in the region outward in the width direction from the absorbent body 4 is provided on the wing part 5. It is not provided between the vicinity of the front base and the vicinity of the rear base of the wing part 5. Therefore, the same effects as the sanitary napkin 1 of the first embodiment are exhibited.
  • the rear end portion of the front seal line 84 and the front end portion of the rear seal line 83 are curved toward the inner side in the width direction of the absorbent article 1 and are positioned on the absorbent main body 10. Therefore, the fold line force of the wing part 5 becomes a curved line that is convex inward in the width direction, and the wing part 5 is immediately recessed toward the inner side in the width direction (usually inward in the width direction). ), The attachment stability of the sanitary napkin 1 to the shorts is high.
  • the absorbent main body 10 having a small increase in the longitudinal rigidity of the absorbent main body 10 due to the rigidity of the heat seal wire is excellent in wearability along the body.
  • the rear end portion of the front seal line 84 is curved inward in the width direction of the absorbent article 1, and It may be curved toward the rear end.
  • the front end portion of the rear seal line 83 may be curved inward in the width direction of the absorbent article 1 and further curved toward the front end portion of the absorbent main body 10.
  • the rear end portion of the front seal line 84 and the front end portion of the rear seal line 83 have such a curved shape! / If this is the case, the wrapping line of the wing part 5 is the side edge of the crotch part of the shorts. The shape is likely to be closer to the shape.
  • the rear end portion of the front seal line 84 may be arranged in two rows separated in the width direction. If the rear end part of the front seal line 84 and the front end part of the rear seal line 83 are arranged in two rows in this way, it corresponds to the wearer's body shape and the width of the crotch part of the shorts. A curved fold line of the wing part 5 is easily formed.
  • FIG. 40 shows the wing part 5 and the excretory part facing part A in the vicinity thereof in the sanitary napkin of the fourth embodiment of the absorbent article of the present invention (fourth invention).
  • the sanitary napkin of the fourth embodiment is different from the first embodiment in that the excretory part-facing part seal line 81 is not provided.
  • the rear end portion of the front section line 84 and the front end portion of the rear portion seal line 83 are not curved outward or inward in the width direction.
  • the same effects as in the first embodiment can be obtained, and since the folding position of the wing part 5 is hardly restricted, the wing part 5 can be freely wound around the crotch part of the shorts. Easier effects are even higher.
  • the rear seal line 83 can be provided from the rear end portion of the absorbent main body 10 to the vicinity of the root of the rear side of the wing portion 5.
  • the side seat 61 may form a part of the wing part 5 and the rear flap 7 or may form a part! A part of the wing part 5 and the rear flap 7 is formed from the back sheet 3 by force.
  • a plurality of excretion part facing part seal lines 81 extending in the width direction are provided intermittently in the longitudinal direction, so that they are discontinuously provided near the bases of the wing parts 5.
  • the plurality of excretory part-facing part seal wires 81 and the outer end of the wing part 5 side of the absorbent article 1 It can be provided so as to form a straight line extending along the longitudinal direction.
  • the two-layer region of the side leak-proof portion 6 is not limited to one formed by folding back one side sheet 61 in the width direction as in the above embodiment, and may be formed by laminating two sheets. it can. Further, the side leak-proof portion 6 may not have a two-layer region. That is, the side leakage prevention part 6 can be formed from one side sheet 61 that is not folded.
  • each configuration in each of the above embodiments can be appropriately combined with other embodiments, and the absorbent article of the present invention (fourth invention) is not limited to sanitary napkins, but a panty liner ), Incontinence pads and the like.
  • the underwear to be worn is not limited to the show.
  • the absorbent article 1 of the first embodiment is a sanitary napkin (hereinafter also simply referred to as a napkin). As shown in FIGS. 41 to 43, the liquid-retaining absorbent layer 11 and the liquid-impermeable material are used. And a pair of wing-shaped flap portions 6 and 6 extending from both side edge portions 10a in the longitudinal direction of the absorbent body 10. Yes.
  • the absorbent layer 11 of the napkin 1 is composed of a liquid-permeable top sheet 2 and a liquid-retaining absorbent body 4, and the leak-proof layer 12 is composed of a back sheet 3 having air permeability and liquid impermeability.
  • each of the pair of wing-shaped flap portions 6, 6 is formed so as to have a layer structure in the thickness direction from the nonwoven fabric, and the absorbent main body 10 is more than the base portion 62.
  • the absorbent main body 10 is more than the base portion 62.
  • the central portion M At the outer position in the width direction at the center portion M as a portion where the number of layers of the nonwoven fabric is larger than that of the base portion 62, and the central portion M and a flap formed on the non-skin contact surface side.
  • the adhesive part 61 overlaps (a flap adhesive part 61 is formed on the non-skin contact surface side of the central part M).
  • the napkin 1 has a front part A, an excretion part facing part B (a part having an excretion part facing area disposed in the center in the width direction) facing the wearer's liquid excretion part, and a rear part. Divided into part C.
  • the napkin 1 of the first embodiment is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the absorbent main body 10 (hereinafter also referred to as the main body longitudinal direction).
  • Each of the top sheet 2 and the back sheet 3 is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • the absorbent body 4 is vertically long, and its longitudinal direction coincides with the longitudinal direction of the main body. Nut is fixed between the three.
  • the width of the top sheet 2 is substantially the same as the width of the absorber 4 and is formed narrower than the width of the back sheet 3.
  • the top sheet 2 covers the entire surface of the absorbent body 4 on the skin contact surface side.
  • Each of the top sheet 2 and the back sheet 3 is bonded to each other by a known bonding method such as heat sealing or bonding with an adhesive at the extended portions of the absorber 4 in the longitudinal direction. .
  • the skin contact surface is a surface that is directed toward the wearer's skin when worn, out of both surfaces of the absorbent article spread in a flat shape, Of the absorbent article expanded in a flat shape, it is the one that faces the underwear side of the shorts etc. (the side opposite to the wearer's skin) when worn.
  • the skin contact surface includes the surface sheet 2 side surface of the absorbent main body 10 and the surface sheet 2 side surface of the wing-shaped flap 6, and the non-skin contact surface includes the back surface of the absorbent main body 10.
  • the surface on the sheet 3 side and the surface on the back sheet 3 side of the wing-shaped flap portion 6 formation surface of the flap adhesive portion 61) are included.
  • the napkin 1 has a pair of side leak-proof portions 5 and 5, and the pair of side leak-proof portions 5 and 5 allows the skin in the absorbent main body 10 to be skinned. Both sides in the longitudinal direction on the abutting surface side are covered, and each of the pair of side leakage preventing parts 5 and 5 and each of the pair of wing-shaped flap parts 6 and 6 are formed in a body-like manner.
  • the pair of wing-shaped flap portions 6, 6 of the first embodiment are provided in the excretory portion facing portion B of the napkin 1.
  • Each of the pair of wing-shaped flap portions 6 and 6 is vertically long, and the longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • Each of the pair of wing-shaped flap portions 6 and 6 has a central portion M in the width direction of the absorbent main body 10 (hereinafter, also referred to as a main body width direction) formed of three layers of nonwoven fabric.
  • An inner portion I located inward in the width direction of the main body from M is formed of two layers of nonwoven fabric.
  • the outer portion O positioned outward in the width direction of the main body from the central portion M is formed from two layers of nonwoven fabric.
  • the wing-shaped flap portion 6 has a layer structure in which the number of layers of the nonwoven fabric forming the wing-shaped flap portion 6 is different depending on the position in the main body width direction.
  • An inward portion I of the wing-shaped flap portion 6 is a base portion 62 in the wing-shaped flap portion 6.
  • the central part M of the wing-shaped flap 6 is In other words, the wing-shaped flap portion 6 is a region having a predetermined width centered on the center in the width direction.
  • the wing-shaped flap portion 6 is formed from two wing-shaped flap portion forming sheets 6A and 6B made of a nonwoven fabric.
  • the wing-shaped flap portion forming sheet 6A extends from the outer edge of the wing-shaped flap portion 6 in the width direction of the main body toward the inside of the main body width direction, and the non-skin contact surface of the wing-shaped flap portion 6 A side surface is formed. Further, the wing-shaped flap portion forming sheet 6A is directed inward in the width direction of the main body so as to cover the skin contact surface side of the absorbent main body 10 from the side edge 1 Oa in the longitudinal direction of the absorbent main body 10.
  • the wing-shaped flap portion forming sheet 6A extends from the longitudinal side edge portion 10a of the absorbent main body 10 and extends to the central portion M of the wing-shaped flap portion 6.
  • the inner surface I and the center M are formed on the skin contact surface side.
  • the wing-shaped flap portion forming sheet 6B extends from the outer edge in the body width direction of the wing-shaped flap portion 6 to the central portion M of the wing-shaped flap portion 6.
  • the surface on the non-skin contact surface side and part of the surface on the skin contact surface side of the sheet 6B are folded back! /, And covered with the wing-shaped flap part forming sheet 6A! .
  • each of the pair of wing-shaped flap portions 6 and 6 of the first embodiment has a layer structure in the thickness direction thereof. That is, the inner part I is formed of two layers of opposing nonwoven fabrics of the wing-shaped flap part forming sheet 6A, and the central part M is two layers of opposing parts of the wing-shaped flap part forming sheet 6A. And a wing-shaped flap portion forming sheet 6B interposed between the two layers, and the outer portion O is formed of a wing-shaped flap portion forming sheet 6A and a wing-shaped layer. It is formed of two layers in which one layer made of the flap portion forming sheet 6B is laminated.
  • each of the pair of wing-shaped flap portions 6, 6 is formed with a large number of embossed portions 63, 63 ⁇ , and the wing-shaped flaps facing each other in the inward portion I Part forming sheets 6A are joined together.
  • the wing-shaped flap portion forming sheet 6A and the wing-shaped flap portion forming sheet 6B are joined to each other.
  • a wing-shaped flap portion 6 bent along the edge of the bottom of the short crotch is provided on the non-skin contact surface side surface of each of the pair of wing-shaped flap portions 6, 6.
  • a flap adhesive 61 is provided for fixing to the surface. As shown in FIG. 42, the flap adhesive portion 6 is formed in the central portion M of the wing-shaped flap portion 6. The flap adhesive portion 61 is formed by applying an adhesive to the non-skin contact surface side surface of the wing-shaped flap portion 6. Before the napkin 1 is used, the protective sheet is adhered to the flap adhesive section 61 so as to be peeled off.
  • the dimensions of the wing-shaped flap portion 6 are preferably appropriately designed according to the size and application of the napkin 1, but in general, the dimensions of the wing-shaped flap portion of the sanitary napkin are in the longitudinal direction of the main body.
  • the length is preferably 30 to 100 mm, and the length in the main body width direction is preferably 20 to 40 mm.
  • the length in the width direction of the main body of the central portion M of the wing-shaped flap portion 6 is preferably 2 to 30 mm, and particularly preferably 5 to 20 mm, so that the central portion M has rigidity and flap adhesion.
  • the central portion M has a predetermined strength enough to prevent the wing-shaped flap portion 6 from being broken.
  • the length of the inner part I in the width direction of the main body is preferably 5 to 30 mm, particularly 10 to 20 mm.
  • the wing-shaped flap 6 is bent at the base 62 and fixed to shorts or the like. Preferred from the viewpoint of operability.
  • the length in the main body width direction of the wing-shaped flap portion 6 and each part thereof is a value in which the length in the main body width direction in the excretory portion facing portion B of the absorbent main body 10 is the largest.
  • a conventionally known nonwoven fabric can be used without any particular limitation.
  • various nonwoven fabrics such as an air-through nonwoven fabric, a spunbond nonwoven fabric, a meltblown nonwoven fabric, a spunlace nonwoven fabric and a needle punched nonwoven fabric obtained by hot air treatment of a heat-bonded fiber web produced by the card method can be used.
  • the fiber bonding means There are no particular restrictions on the fiber bonding means. For example, bonding by a binder or bonding by thermal fusion can be used. Also, instead of fiber bonding, mechanical entanglement of fibers such as spunlace nonwoven fabric may be used!
  • the hot-melt fiber web obtained by the card method is treated with hot air as a non-woven fabric to make it strong.
  • An air-through non-woven fabric that is made into a non-woven fabric without compression is most preferably used.
  • the wing-shaped flap portion forming sheets 6A and 6B are preferably stretchable from the viewpoint of forming the side leakage preventing portion 5 together with the wing-shaped flap portion 6. Power S is preferable.
  • the basis weight of the non-woven fabric forming the wing-shaped flap portion forming sheet 6A is 10 to 80 g / m 2 , particularly 20 to 50 g / m 2.
  • the base 62 of the wing-shaped flap portion 6 has flexibility, the wing This is preferable in that the operability of the flaky flap portion 6 is improved and the wing-like flap portion 6 and the side leakage preventing portion 5 are given a predetermined strength and a good wearing feeling.
  • the basis weight of the non-woven fabric forming the wing-shaped flap portion forming sheet 6B is 10 to 80 g / m 2 , particularly 20 to 50 g / m 2.
  • the wing-shaped flap portion 6 has a predetermined strength and good wearing feeling. It is preferable in giving.
  • the basis weight of the nonwoven fabric that forms the wing-shaped flap portion forming sheet 6A is set. It is preferable to make it smaller than the wing-shaped flap forming sheet 6B.
  • each of the pair of side leakage preventing portions 5 and 5 of the napkin 1 of the first embodiment is formed in a vertically long shape, and the longitudinal direction thereof coincides with the longitudinal direction of the main body.
  • Each of the pair of side leak-proof portions 5 and 5 has substantially the same width, and is arranged between both end portions in the longitudinal direction of the main body.
  • the side leak-proof portion 5 is formed from a wing-shaped flap portion forming sheet 6A. As shown in FIG. 42, the wing-shaped flap portion forming sheet 6A is joined to the back sheet 3 by the seal portion 8 at the side edge portion 10a of the absorbent main body 10.
  • the side leakage prevention part 5 has a wing-shaped flap part forming sheet 6 A, and the side edge part 10a of the absorbent main body 10. After the wing-shaped flap portion forming sheet 6A is folded outwardly in the width direction of the main body so as to have a folded end portion 51, it extends toward the inside in the width direction of the absorbent main body 10 and remains as it is. It extends outward in the width direction of the main body and is joined to the back sheet 3 again at the seal portion 8.
  • the seal portion 8 is formed by a force formed by a known joining means such as heat sealing or adhesive bonding.
  • both side edges in the longitudinal direction of the back sheet 3 slightly extend outward in the body width direction from the seal part 8 as shown in FIG.
  • the part of the back sheet 3 that is extended! / Is joined to the wing-shaped flap 6! /, N! /, And the force.
  • each of the pair of side leakage preventing portions 5 and 5 and the wing-shaped flap portion 6 on the same side in the longitudinal direction of the main body are integrally formed from one wing-shaped flap portion forming sheet 6A. Is formed.
  • the wing-shaped flap portion forming sheet 6A is divided into a side leak-proof portion 5 and a wing-shaped flap portion 6 with the seal portion 8 as a boundary.
  • the shape of the seal portion 8 is shown in FIG. 41 so that when the connected wing-shaped flap portion 6 is bent along the edge of the shorts crotch, it easily fits with the edge of the shorts crotch. As shown, it has a shape constricted inward in the main body width direction at the center in the longitudinal direction.
  • each of the pair of side leakage preventing parts 5 and 5 is formed with a wing-like flap part, which is a non-woven fabric forming the wing-like flap part 6, as shown in FIG. Formed from sheet 6A.
  • This wing-shaped flap portion forming sheet 6A force has a basis weight in the above-mentioned range, so that the inner surfaces of the folded end portions 51 are at least partially separated from each other. Therefore, the side leak-proof portion 5 has a good cushioning property.
  • each of the pair of side leakage preventing parts 5 and 5 has a concave shape toward the inner side in the width direction of the absorbent main body 10, as shown in Figs. It is joined to the absorbent main body 10 by a first joint line 52 and a second joint line 53 that is positioned before and after the longitudinal direction of the absorbent main body 10 of the first joint line 52 and extends so as to intersect the longitudinal direction.
  • a pocket 52c that is opened when worn is formed between the first joint line 52 and the folded end 51 in each of the pair of side leakage preventing parts 5 and 5, and the second joint line 53 is formed at the folded end.
  • the portion 53a close to the portion 51 and the portion 53b far from the turned-up end 51 are alternately provided, and the turned-up ends adjacent to each other.
  • the distance L2 between the portions 53a close to the portion 51 is shorter than the longitudinal length L1 of the first joining line 52.
  • the first joint line 52 of the side leakage preventing part 5 will be further described.
  • the first joint line 52 is provided in the excretory part facing part B of the napkin 1 as shown in FIG.
  • the pair of side leakage preventing parts 5 and 5 are joined to the absorbent main body 10 by first joining lines 52, respectively.
  • the first joining line 52 is continuous in the longitudinal direction of the absorbent main body 10.
  • the first joining line 52 extends in the longitudinal direction in an arc shape, and has portions 52a and 52a close to the folded end 51 and a portion 52b far from the folded end 51. Yes.
  • the length L1 in the longitudinal direction of the first joint line 52 (see FIG. 43) and the separation distance W1 between the portion 52a near the folded end 51 of the first joint line 52 and the portion 52b far from the folded end 51 (FIG. 43). (Referred to below as reference width), it is preferable that the relationship of L1> W1 is satisfied.
  • L1 has a length of 10 to 50% of the length of the napkin 1 in the longitudinal direction of the body, and W1 has a width of 3 to 30% of the length of the napkin 1 in the width direction of the body.
  • the length of the napkin 1 in the width direction of the main body here means the greatest length force in the width direction of the main body at the excretory part-facing portion B of the absorbent main body 10!
  • here! /, “Near! /,” And “Far,” are far compared to the near !, near and far compared to the part. It is.
  • the first and second joining lines are preferably a single joining line that is substantially continuous as a whole. That is, the first bonding line and the second bonding line are each a substantially continuous bonding line, and the first bonding line and the second bonding line are also substantially continuous. Is preferred. “Substantially continuous” means that, in addition to the continuous joining line as in the first embodiment, a plurality of joining parts do not overlap with the straight line when an arbitrary straight line parallel to the width direction of the absorbent article is assumed. Including the ones that are arranged continuously so that there are no parts, and those that consist of many joints that are discontinuous when viewed microscopically, but that form linear joints when viewed as a whole. In addition, it includes a joining line formed by arranging a number of joining parts in the longitudinal direction of the napkin 1 so as to overlap each other.
  • the length L1 (see FIG. 43) of the first joint line 52 provided in the excretory part facing part B is substantially the same as the length of the base part 62 of the wing-shaped flap part 6, as shown in FIG. is there.
  • the first joining line 52 in the first embodiment is formed by applying a part of the portion of the side leakage preventing part 5 located near the center in the body width direction to the surface by heat embossing. Formed by joining with sheet 2!
  • the first joint line 52 is formed by bonding the side leak-proof portion 5 only to the top sheet 2 as in the present embodiment, or the side leak-proof portion 5 is fixed to the absorber 4 together with the top sheet 2.
  • a groove is formed in the portion corresponding to the first joint line of the absorbent body 4! /,!, It becomes softer and the absorbent article becomes softer. This is preferred because it improves fit.
  • the first joining line 52 may be formed by compressing the side leak-proof portion 5 together with the topsheet 2 and the absorber 4. In this case, there is an advantage that liquid bleeding and diffusion are suppressed by the groove formed in the first joint line 52 portion.
  • a portion 52d (see Fig. 43) between the folded end portion 51 and the first joining line 52 in each of the pair of side leakage preventing portions 5 and 5 is not joined to the top sheet 2, and the portion 52d
  • a pocket 52c (see FIG. 42, hereinafter also referred to as a large pocket) is formed between the surface sheet 2 and the surface sheet 2.
  • the pocket 52c is opened at least when worn, and since the bodily fluid that has moved in the width direction of the body of the napkin 1 is captured in the opened pocket 52c, leakage prevention can be improved.
  • the leak-proof property in the width direction of the body is high, so it is also preferable because it gives the wearer a sense of security!
  • the first joining line 52 overlaps with the absorber 4 in plan view. This means that the liquid captured by the pocket 52c is smoothly absorbed by the absorber, and the leak-proof property is further improved. Since it improves, it is preferable.
  • the liquid caught in the pocket 52c is absorbed by the absorber 4 while it is absorbed by the absorber 4 while moving from the front of the pocket 52c to the back, or after reaching the back of the pocket 52c.
  • the term “overlapping with the absorber 4” in plan view means that the entire first joint line 52 or part of the force absorber 4 exists in the region where the absorber 4 is disposed. It is preferable that a part of the swing width W1 overlaps the absorber 4 in the first joining line 52. It is more preferable that the entire swing width W1 overlaps the absorber 4.
  • the first joining line 52 has the entire swinging width W1 overlapped with the absorber 4 over the entire length thereof.
  • the second joint lines 53 are connected to each other before and after the first joint line 52, respectively.
  • the second joining line 53 is formed in the side leakage preventing part 5 of the front part A and the rear part C.
  • the pair of side leakage preventing parts 5 and 5 are joined to the absorbent main body 10 by a second joining line 53, respectively.
  • the second joining line 53 is continuous in the longitudinal direction of the absorbent main body 10.
  • the second joining line 53 meanders so as to alternately have portions 53a near the folded end 51 and portions 53b far from the folded end 51, and more specifically. Has a zigzag shape along the longitudinal direction! Near the folded end 51! /, Between the portion 53a and the portion 53b far from the folded end 51, the joining line forming the second joining line 53 extends so as to intersect in the longitudinal direction. I'm connected.
  • the second joining line 53 has a shape in which an arc-shaped portion convex toward the center in the width direction of the main body and an arc-shaped portion concave toward the center in the width direction of the main body are alternately connected. It has a part parallel to the longitudinal direction.
  • the distance L2 between the portions close to the adjacent folded end 51 is shorter than the longitudinal length L1 of the first joint line 52, as shown in FIG. Yes.
  • the distance L2 is a length obtained by measuring the distance between the points closest to the folded-back end portions 51 in the portions 53a near the folded-back end portions 51 along the longitudinal direction of the main body.
  • the separation distance W3 (see FIG. 43; hereinafter also referred to as the swing width) between the portion 53a near the folded end portion 51 and the portion 53b far from the folded end portion 51 of the second joining line 53 is due to heat embossing.
  • the first joint line 52 has a predetermined width, and both side edges of the first joint line 52 can be regarded as two parallel straight lines microscopically. Therefore, the seal width W2 is equal to the two parallel straight lines. The distance between.
  • a portion 53d (see Fig. 43) between the second joining line 53 and the folded end portion 51 in each of the pair of side leakage preventing portions 5 and 5 is not joined.
  • a pocket 53c (hereinafter also referred to as a small pocket) is formed in between.
  • the pocket 53c is preferably open.
  • the second bonding line 53 in the first embodiment is similar to the first bonding line 52 in that heat embossing is added.
  • a part of the side leakage preventing portion 5 located near the center in the body width direction is joined to the surface sheet 2.
  • the description of the first joining line 52 described above is appropriately applied.
  • the second bonding line 53 overlaps with the absorber 4 in plan view. This means that the liquid captured by the pocket 53c is smoothly absorbed by the absorber and the leakage prevention property is further improved. Since it improves, it is preferable.
  • the entire width of the second joining line 53 overlaps the absorber 4 over the entire length thereof.
  • the description of the first bonding line 52 described above is appropriately applied.
  • each of the pair of side leak-proof portions 5 and 5 a plurality of small pockets 53c formed by the second joint line 53 are formed as long as one is formed before and after the large pocket 52c. It ’s a good thing.
  • the region of the small pocket 53c formed by the second joint line is preferably 10% or more in the front-rear direction with respect to the length L1 of the first joint line.
  • the length of the pocket 53c in the longitudinal direction is preferably 4% or more with respect to L1.
  • the length L1 of the first joint line 52 in the main body longitudinal direction of the napkin 1 of the first embodiment is 40 to 100 mm.
  • the length of the second joint line 53 in the main body longitudinal direction (preferably 100 mm)
  • the area where the meandering is repeated) is preferably 4 to 50 mm.
  • L1 is preferably longer.
  • the distance L2 in the second bonding line 53 is preferably 4 to 30 mm.
  • L2 / L1 is preferably 4 to 75%.
  • the swing width W1 of the first joint line 52 is preferably 2 to 15 mm
  • the swing width W3 of the second joint line 53 is preferably 2 to 15 mm.
  • W1 is a force that is the same as W3, a force that is greater than W3.
  • grooves 7 are provided on the skin contact surface side of the absorbent main body 10 in the napkin 1.
  • the groove 7 is formed of a pair of embossed grooves extending in the longitudinal direction of the main body, and arc-shaped double embossed grooves extending in the width direction of the main body at both longitudinal ends of the embossed groove. Further, the pair of embossed grooves extending in the longitudinal direction of the main body has a shape confined inside. 'Surface sheet 2 and absorber 4 are joined by groove 7 Has been.
  • the folded end portion 51 of the side leak-proof portion 5 is located just outside the groove 7 as shown in FIG.
  • the napkin 1 of the first embodiment is provided with a polymer sheet 41 interposed between the top sheet 2 and the absorber 4.
  • a polymer sheet 41 fluff pulp and a sheet formed by mixing a superabsorbent polymer into a fiber and the like are used, and a sheet formed by mixing a superabsorbent polymer into a sheet is used as the polymer sheet 41.
  • Absorbing polymers can be dispersed in layers, or can be dispersed in three dimensions! /.
  • the other forming materials constituting the napkin 1 of the first embodiment will be described.
  • the forming material for the surface sheet 2, the back sheet 3, the adhesive, the absorbent body 4 or the polymer sheet 41 is a sanitary napkin.
  • the vicinity of the base portion 62 of the wing-shaped flap portion 6 is flexible, excellent in operability, and the center where the flap adhesive portion 61 is formed.
  • the part M is rigid and has a predetermined strength, and is fixed via the flap adhesive part 61.
  • the excretory part facing part B which is likely to be twisted when worn, has the first joint line 52 that forms a large pocket 52c and the second joint lines 53, 53 before and after the first joint line 52, so it twists to the napkin 1. Even if this occurs, the small pocket 53c formed by the second joint line 53 is deformed and the torsion of the napkin 1 is absorbed. Therefore, the large pocket 52c in the excretory part facing part B can capture the body fluid that has moved in the width direction without being crushed by twisting. Further, when the napkin 1 is worn, the hip portion is likely to be twisted. However, since the rear portion C also has the second joining line 53, the leak-proof property is further enhanced.
  • a sanitary napkin according to a second embodiment of the present invention (fifth invention) will be described below with reference to Figs. Regarding the second embodiment, unless otherwise specified, the description in detail regarding the first embodiment described above is appropriately applied.
  • the same members as those in FIGS. 41 to 43 are denoted by the same reference numerals.
  • the sanitary napkin 1 according to the second preferred embodiment of the present invention (the fifth invention) has a wing-shaped flap portion 6 that is a member different from the side leakage preventing portion 5. It is formed from.
  • the wing-shaped flap portion 6 is formed of two wing-shaped flap portion forming sheets 6 C and 6 D made of a nonwoven fabric. As shown in FIG. 45, the wing-shaped flap portion forming sheet 6C extends outward from the center portion M of the wing-shaped flap portion 6 in the width direction of the main body, and contacts the center portion M and the outer portion I. A surface-side surface is formed, and toward the non-skin contact surface side and inward of the body width direction so as to form a folded edge at the outer side of the wing-shaped flap portion 6 in the body width direction.
  • the wing-shaped flap portion forming sheet 6D extends from the central portion M of the wing-shaped flap portion 6 toward the inside in the width direction of the main body, and the skin of the inner portion I.
  • a surface on the abutting surface side is formed, and is joined to the back surface sheet 3 and the wing-shaped flap portion forming sheet 6C by the seal portion 8 at the side edge portion 10a of the absorbent main body 10! /.
  • the wing-shaped flap portion forming sheet 6D is nipped and fixed by the wing-shaped flap portion forming sheet 6C facing each other at the central portion M.
  • a flap adhesive portion 61 is formed on the non-skin contact surface side of the central portion M of the wing-shaped flap portion 6 as in the first embodiment described above.
  • the wing-shaped flap portion 6 has a layer structure in which the number of nonwoven fabrics forming the thickness direction of the wing-shaped flap portion 6 varies depending on the position in the body width direction! / .
  • each of the pair of wing-shaped flap portions 6 and 6 is formed by forming the inner portion I in the width direction of the absorbent main body 10 from two layers of nonwoven fabric, and the center portion M in the width direction. Is formed of three layers of nonwoven fabric, and the outer portion O in the width direction is formed of two layers of nonwoven fabric.
  • the side leak-proof portion 5 is formed from a side leak-proof portion-forming sheet 5A made of a single nonwoven fabric.
  • the side leakage preventing part forming sheet 5A is joined to the back sheet 3 together with the two wing-shaped flap part forming sheets 6C and 6D at the side edge part 10a of the absorbent main body 10 by the seal part 8.
  • Side leakage prevention part 5 Id leakage-proof part forming sheet 5A extends from the side edge 1 Oa of the absorbent main body 10 toward the inner side in the width direction of the absorbent main body 10, and the side of the absorbent main body 10 on the skin contact surface side. Covering.
  • One end portion in the longitudinal direction of the side leakage preventing portion forming sheet 5A is fixed to the back sheet 3 or the like by the seal portion 8, and the other end portion is a free end portion at the side portion of the absorbent main body 10. Forming. According to the napkin 1 of the second embodiment, the same effects as those of the first embodiment described above are achieved.
  • absorbent article of the present invention (the fifth invention) can be modified as appropriate without departing from the spirit of the present invention without being limited to the above-described embodiment.
  • the absorbent article of the present invention has a force in which the flap adhesive portion 61 is formed only in the central portion M of the wing-shaped flap portion 6. Further, it may be formed extending to the inner part I or the outer part O.
  • the absorbent article of the present invention may be a sanitary napkin, but may be a panty liner, an incontinence pad, or the like.
  • the embodiment of the method for producing the napkin 1 according to the first embodiment described above is a raw material (not shown) of a long nonwoven fabric wound in a roll shape. ) To feed out the non-woven fabric continuum 60, and to fold back both sides 60a, 60a in the longitudinal direction of the fed non-woven fabric continuum 60 in the width direction so that the both sides overlap each other.
  • An application step of continuously applying an adhesive to the portion P, The long member 64 to which the adhesive is applied is cut in the longitudinal direction so as to swing within the predetermined width in which the embossed portions 63, 63.
  • the nonwoven fabric continuum 60 has air permeability, and after the feeding step, hot air is blown onto the nonwoven fabric continuum 60 by an air-through method, and the nonwoven fabric continuum 60 is blown. It has a hot air treatment process that increases the bulk of the body 60.
  • the portion where the embossed portion 63 is not formed in the pair of side leakage preventing portion continuous members 50, 50 is defined within the width direction of the absorbent main body continuous body.
  • the absorbent body continuum is joined.
  • the nonwoven fabric continuous body 60 is unwound from a long nonwoven fabric (not shown) wound in a roll shape.
  • the nonwoven fabric continuous body 60 has air permeability.
  • the width of the nonwoven fabric continuous body 60 has a dimension capable of forming the side leak-proof portion 5 and the wing-shaped flap portion 6 in the napkin 1 in a state where the width is folded in three in the width direction, which will be described in detail later! I like it! /
  • the nonwoven fabric continuous body 60 in the state of being wound in a roll shape has its bulk (thickness) reduced by the winding pressure.
  • the fed nonwoven fabric continuum 60 is sent to the hot air treatment step.
  • hot air treatment step hot air is blown onto the drawn nonwoven fabric continuous body 60 to restore the bulk.
  • a method for recovering the volume of the wound nonwoven fabric for example, there is a method described in the specification of JP-A-2004-137655.
  • Hot air is blown by the method. That is, hot air is blown to the nonwoven fabric continuum 60, and the blown hot air penetrates the nonwoven fabric continuum 60.
  • the bulk of the nonwoven fabric continuous body 60 in a state where the bulk is reduced is increased and recovered to the same extent as the volume before winding.
  • the non-woven fabric continuum 60 that has been treated with hot air as described above is sent to the folding step.
  • both side portions 60a, 60a in the longitudinal direction of the nonwoven fabric continuous body 60 are folded in the width direction so that the both side portions overlap each other. Fold it in half.
  • folding both sides 60a and 60a it is preferable to fold both sides 60a and 60a so that the folding end 51 does not fold!
  • the width of the part P where both sides 60a and 60a overlap is the width of the nonwoven fabric continuous body 60;
  • a device for folding both side portions 60a, 60a of the nonwoven fabric continuous body 60 it is possible to use various devices conventionally used for folding absorbent material members. It is preferable to use a folding guide device for folding a nonwoven fabric or the like.
  • the folded nonwoven fabric continuous body 60 ′ is sent to the embossing process.
  • the folded nonwoven fabric continuous body 6CT is, as shown in FIG. 46 (b), the part 60a, 60a on both sides so as to include the portion P where the two sides overlap each other.
  • a large number of embossed portions with a predetermined width are formed at portions other than both side portions 60a 'and 60a' of the woven fabric continuous body 60 ', that is, at the center in the width direction of the folded nonwoven fabric continuous body 60'.
  • the folded nonwoven fabric 60 cocoon has an embossed portion 63 formed in a strip shape.
  • the width for forming the embossed portion 63 is preferably 20 to 60%, particularly preferably 30 to 50% with respect to the width of the folded nonwoven fabric continuous body 60 ′.
  • the widths of both side portions 60a 'and 60a' where the embossed portion is not formed are substantially the same.
  • the embossed portion 63 can be formed using, for example, a pair of embossed rolls in which embossed convex portions are regularly arranged on the peripheral surface.
  • a pressure-sensitive adhesive such as a hot-melt adhesive is continuously applied to the portion P where both sides overlap.
  • the surface to be applied may be on either side of the long member 64.
  • the adhesive is applied to the side of the nonwoven fabric continuous body 60 where the side portions 60a and 60a in the longitudinal direction do not have folded ends.
  • the surface to which the adhesive is applied is a surface that forms the non-skin contact surface side of the wing-shaped flap portion 6, and the portion to which the adhesive is applied becomes the flap adhesive portion 61.
  • As a device for applying adhesive it is possible to use various devices that have been used for applying adhesive for absorbent articles. Slots that are applied to release paper, etc., and then transferred to the flap. A coating method and a slot spray method in which coating is directly applied to the flap portion are preferable.
  • a long protective sheet (not shown) having one surface peeled off is applied to the part to which the pressure-sensitive adhesive is applied, and the surface subjected to the peeling treatment is contacted with the pressure-sensitive adhesive. Adheres freely so that it comes into contact.
  • the long member 64 coated with the adhesive is sent to the first cutting step.
  • the embossed portion 63 is formed in the width direction of the long member 64 to which the adhesive has been applied, as shown in FIG. 46 (c).
  • a pair of side leakage preventing part continuous members 50, 50 in which the wing-shaped flap part forming part 65 is intermittently formed are cut in the longitudinal direction so as to swing within the predetermined width.
  • a force capable of using various apparatuses conventionally used for cutting members of absorbent articles is preferable, particularly a rotary cutter.
  • the cutting is performed with a force S so as to swing between both ends in the width direction in the belt-like portion where the embossed portion 63 is formed.
  • the protective sheet protecting the adhesive is also cut at the same time.
  • the side leakage preventing portion forming portion 54 is continuous, and the wing-shaped flap portion forming portion 65 is discontinuous.
  • a side leakage preventing portion continuous member 50 having a large number of side leakage preventing portion forming portions 54 and wing-shaped flap portion forming portions 65 is prepared.
  • the side leak-proof portion forming portion 54 is a portion of the side leak-proof portion continuous member 50 that forms the side leak-proof portion 5, and the wing-shaped flap portion forming portion 65 is the side-proof portion that forms the wing-shaped flap portion 6. This is the portion of the leakage continuous member 50.
  • a pair of side leak-proof part continuous members 50 and 50 are sent to the said joining process.
  • the pair of side leakage preventing part continuous members 50, 50 are brought into contact with the skin of the continuous surface sheet 20 produced separately.
  • Wing-shaped flap portion forming portions 65 extend from both side edges in the longitudinal direction of the surface sheet continuous body 20 on both sides in the longitudinal direction on the surface side, and the adhesive faces the non-skin contact surface side.
  • the surface sheet continuous body 20 ′ is produced by bonding to the surface sheet continuous body 20.
  • a force capable of using various apparatuses conventionally used for joining the members of the absorbent article in particular, bonding using an adhesive such as a hot melt adhesive or melting such as heat sealing. Adhesion is preferred.
  • a portion where the embossed portion 63 is not formed in each of the pair of side leakage preventing portion continuous members 50, 50, that is, the side leakage preventing portion forming portion 54 is defined as the width direction of the topsheet continuous body 20
  • a first joining line 52 (not shown) having a concave shape toward the inward side, and the first joining line 52 are located before and after the longitudinal direction of the surface sheet continuous body 20 so as to intersect the longitudinal direction.
  • the extended second bonding line 53 (not shown) is bonded to the continuous surface sheet 20.
  • the first joining line 52 is formed at the side leakage preventing part forming part 54 adjacent to the wing-shaped flap part forming part 65, and the first joining line 52 and the second joining line located before and after the first joining line 52 are formed.
  • Each of the second joint lines 53 is formed so that the combined length of 53 is the length of one napkin.
  • Each of the first bonding line 52 and the second bonding line 53 is preferably formed in the same manner as the napkin 1 of the first embodiment described above.
  • the top sheet composite continuous body 20 ' was separately prepared and prepared, and the back sheet continuous body in which the absorbent bodies 4 were placed and joined at predetermined intervals. Bonded onto 30 to produce a continuous absorbent article 1A.
  • an apparatus for the joining there is a force capable of using various kinds of apparatuses conventionally used for joining absorbent material members. Adhesion using an adhesive such as hot menolete adhesive or fusion bonding such as heat sealing. preferable.
  • the surface sheet composite continuous body 20 ′ is formed such that the wing-shaped flap portion forming portion 65 extends from both side edges in the longitudinal direction of the back surface continuous body 30 and the applied adhesive is on the non-skin contact surface side.
  • the back sheet continuous body 30 is bonded so as to face. Further, it is preferable to place and join a polymer sheet 41 separately prepared and prepared on the absorber 4. More specifically, the side sheet leakage preventing portion 54 is formed on the back sheet along the boundary between the side leakage preventing portion forming portion 54 and the wing-shaped flap portion forming portion 65.
  • the backside sheet continuous body 30 is joined so as to cover the longitudinal side portion of the continuous body 30.
  • the upper and lower surfaces are joined across the width direction at a predetermined interval corresponding to the length of the napkin 1 to form a seal portion.
  • the laminate continuous body including the top sheet continuous body 20, the back sheet continuous body 30, and the absorbent body 4 interposed between and spaced from the both continuous bodies is the absorbent main body continuous body. Is forming.
  • a pair (surface sheet continuous body 20) constituting the absorbent main body continuum is previously paired. Forming the absorbent body continuous body after joining the side leakage preventing part continuous members 50, 50.
  • the absorbent article continuum 1A is sent to the second cutting step, and in the second cutting step, the absorbent article continuum 1A is moved in the longitudinal direction as shown in FIG. 47 (b).
  • the napkin 1 as an individual absorbent article of the present invention is obtained by cutting across the width direction at the seal portion as the cut portion formed intermittently.
  • a force S that can use various apparatuses conventionally used for cutting absorbent articles, particularly a rotary cutter, is preferable.
  • the members not particularly described, including the continuous surface sheet 20 and the like, are manufactured according to a conventional method.
  • each of the side leakage preventing portion 5 and the wing-shaped flap portion 6 can be integrally formed from a single long nonwoven fabric continuous body 60. Can be simplified and the variable cost can be reduced.
  • the manufacturing method of the absorbent article of the present invention (the fifth invention) can be appropriately changed without departing from the gist of the present invention which is not limited to the above-described embodiment.
  • the absorbent article according to the first embodiment of the present invention is a sanitary napkin 1, and as shown in FIGS. 48 to 51, an absorbent sheet disposed between a top sheet 2, a back sheet 3, and both sheets 2 and 3 is disposed.
  • Absorbent body 10 with body 4 and both sides of absorbent body 10 extend outward in the width direction.
  • the “skin contact surface side” refers to the side (surface) that is disposed on the skin side of the wearer when worn among the front and back sides (surface) of each member such as the absorbent main body. ). Further, the “non-skin contact surface side” is a side (surface) disposed on the opposite side to the wearer's skin side when worn. Unless otherwise specified, the “longitudinal direction” is a direction along the longitudinal direction of the absorbent article, and the “width direction” is a direction along the width direction of the absorbent article.
  • the excretory part facing part A is an area facing the excretory part of the wearer as shown in FIG. 48, and is an absorbent article having the wing part 5 as in the present invention.
  • the wings 5 are provided on both sides.
  • An area located in front of the excretory part facing part A is referred to as a front part B, and an area located in the rear of the excretion part facing part A is referred to as a rear part C.
  • the absorbent main body 10 includes a liquid-permeable top sheet 2, a liquid-impermeable or water-repellent back sheet 3, and a liquid holding member disposed between both sheets 2 and 3. It has a sex absorber 4.
  • the absorber 4 has a substantially rectangular shape with rounded front and rear edges in plan view.
  • the top sheet 2 covers the entire upper surface of the absorber 4.
  • the front and rear edges of the surface sheet 2 are rounded and extend from the front and rear edges of the absorber 4 in the longitudinal direction.
  • the side edges of the surface sheet 2 are linear along the longitudinal direction and extend slightly from the side edges of the absorbent body 4 in the width direction. Separate from the back sheet 3! /
  • the back sheet 3 covers the entire area of the lower surface of the absorber 4, as shown in Figs.
  • the front and rear edges of the back sheet 3 are rounded and extend from the front and rear edges of the absorber 4 in the longitudinal direction. Both side edges of the back sheet 3 extend in the width direction from each side edge of the absorber 4.
  • the non-skin contact surface side of the absorbent main body 10 includes the absorbent main body 10 and the crotch portion of the shorts on the non-skin contact surface side of the back sheet 3.
  • An anti-slip agent 11 is provided to secure the upper surface (inner surface) of.
  • Anti-slip agent 11 is shaped from adhesive (The same applies to the slip stoppers 55 and 75 described later).
  • the top sheet 2 As the top sheet 2, the back sheet 3 and the absorbent body 4, various materials conventionally used in absorbent articles such as sanitary napkins can be used without particular limitation.
  • a non-woven fabric having liquid permeability can be used as the surface sheet 2.
  • a liquid-impermeable or water-repellent film or the like can be used as the absorbent body 4, it is possible to use an absorbent core mainly composed of a fiber aggregate such as pulp fiber, short fiber, or long fiber web, which has been conventionally used, and coated with a covering sheet. it can.
  • the absorbent core contains a super absorbent polymer! /, You can! /.
  • the back sheet 3 preferably has moisture permeability (breathability) from the viewpoint of reducing the swelling of the absorbent main body 10.
  • a moisture-permeable sheet for example, a thermoplastic resin added with an inorganic compound or an organic compound filler is melt-extruded with a T-die or a circular die force to form a film.
  • Resin sheet obtained by stretching or biaxial stretching, composite nonwoven fabric (S, SMS, SMMS, etc.) in which spunbond nonwoven fabric (S) and melt blown nonwoven fabric (M) are composited, air-through nonwoven fabric, SMS, etc.
  • S composite nonwoven fabric
  • M melt blown nonwoven fabric
  • the resin sheet is used as the back sheet 3, it is preferable from the viewpoint of good fixability of the slip stopper 11 provided on the non-skin contact surface side of the back sheet 3, and when the composite nonwoven fabric is used, moisture permeability and Flexibility is preferred from the point of view!
  • the absorber 4 has a two-layer structure including an upper absorber 41 and a lower absorber 42 as shown in FIG.
  • the upper absorbent body 41 is shorter in length and width than the lower absorbent body 42 in a plan view, and has a shape smaller than the center first seal line 12 described later. Are not joined. Further, the upper absorbent body 41 is located closer to the center in the longitudinal direction and the width direction of the lower absorbent body 42, and by extension, is located closer to the center in the longitudinal direction and the width direction of the absorbent main body 10. Accordingly, the upper absorbent body 41 forms a so-called middle-high region in the absorbent main body 10.
  • the top sheet 2 has a central first seal line 12 and a center formed by integrally compacting the top sheet 2 and the lower absorbent body 42, as shown in FIGS.
  • a second seal line 13 is provided.
  • the central first seal line 12 surrounds the upper absorbent layer 41 in plan view.
  • the upper surface of the top sheet 2 is provided in a ring shape in a region that is not covered with the side leak-proof portion 6.
  • the pair of front and rear center second seal lines 13 and 13 have a substantially semicircular arc shape, and are continuous with the center first seal line 12 at the front and rear sides of the front and rear of the center first seal line 12, respectively. Provided.
  • the center first seal line 12 and the center second seal line 13 do not join the force sheet sheet 2 and the upper absorbent body 41 to join the surface sheet 2 and the lower absorbent body 42. Therefore, the upper absorbent body 41 is enclosed in a closed space composed of the top sheet 2 and the lower absorbent body 42.
  • the wing portion 5 extends from both side portions of the absorbent main body 10 in the excretory portion facing portion A, and includes a wing upper layer 51 and a wing lower layer 52.
  • the wing portion 5 is used by being folded back to the lower surface (outer surface) side of the crotch portion of underwear such as shorts.
  • the wing base end part 53 which is the base end part thereof, is a laminated body of the wing upper layer 51 and the wing lower layer 52, and the wing tip part 54, which is a part other than the wing base end part 53, the force wing upper layer 51 Consist only of.
  • the wing portion 5 has a substantially trapezoidal shape in which the lower base (side longer than the upper base) is located on the side of the absorbent main body 10 in plan view.
  • the wing lower layer 52 is provided with a slip stopper 55.
  • the slip stopper 55 With the use of the slip stopper 55, the wing part 5 folded back to the lower surface (outer surface) side of the crotch part of the shorts can be fixed to the crotch part at the time of use.
  • the wing base end portion 53 has a length along the width direction of the absorbent article of 2 to 30 mm, preferably a force S, and more preferably 3 to 15 mm. However, the wing base end portion 53 is positioned more inward in the width direction of the absorbent article than the slip stopper 55. When the length of the wing base end portion 53 along the width direction of the absorbent article is not constant along the longitudinal direction of the absorbent article, the longest length is taken as the length of the wing base end portion 53.
  • the rear flap 7 extends from both sides of the absorbent main body 10 in the rear portion C, and includes a flap upper layer 71 and a flap lower layer 72.
  • the rear flap 7 is an underwear such as shorts that does not fold back while extending from the absorbent body 10. It is used by being attached to. However, the rear flap 7 may be folded back to the skin contact surface side or the non-skin contact surface side of the absorbent main body 10 in order to make it compact in an individual packaging form or the like.
  • the rear flap 7 has a flap base end 73 which is the base end portion thereof and a laminated body of the flap upper layer 71 and the flap lower layer 72, and a flap front end portion 74 which is a part other than the flap base end portion 73. It consists only of the upper flap 71. As shown in FIG. 1, the rear flap 7 has a shape that is convexly convex outward in the width direction in plan view.
  • a flap stopper 75 is provided in the flap lower layer 72.
  • the slip stopper 75 allows the rear flap 7 to be secured to the shorts during use.
  • the flap base end 73 has a length along the width direction of the absorbent article of 2 to 30 mm, preferably S, and more preferably 3 to 15 mm. However, the flap base end portion 73 is positioned more inward in the width direction of the absorbent article than the slip stopper 75. When the length of the flap base end portion 73 along the width direction of the absorbent article is not constant along the longitudinal direction of the absorbent article, the longest length is taken as the length of the flap base end portion 73.
  • the side leak-proof portion 6 is a component part covering each side of the absorbent main body 10 on the skin contact surface side, and the skin of the absorbent main body 10 is covered.
  • Each of the both sides on the contact surface side is provided so as to extend substantially along the longitudinal direction of the absorbent main body 10.
  • the side leak-proof portion 6 includes a water-repellent side sheet 61.
  • the side sheet 61 is folded in half in the width direction to form a folded portion at the inner edge of the side leakage preventing portion 6 to form a two-layer region. In the present embodiment, it is a power layer region of 80% or more of the planar view area of the side leak-proof portion 6.
  • the inner edge portion of the side leak-proof portion 6 is linear along the longitudinal direction of the absorbent main body 10. With this configuration, when installed, the inner edge side force S in the side leakage preventing portion 6 is opened as a pocket on the inner side in the width direction of the absorbent main body 10.
  • the water-repellent side sheet 61 various water-repellent materials that are conventionally used in absorbent articles such as sanitary napkins can be used without particular limitation, and have moisture permeability. More preferably.
  • the side sheet 61 may be liquid impermeable.
  • the material of the site sheet 61 is, for example, a spunbond nonwoven fabric, a sheet in which a spunbond nonwoven fabric (S) and a melt blown nonwoven fabric (M) are combined (for example, SM, SMS, SMMS), a heat roll nonwoven fabric, or an air-through nonwoven fabric. And water repellent (hydrophobic) non-woven fabrics.
  • the sliding force due to the smoothness of the surface of the sheet, a good feel, and physical properties (strength, etc.) of the sheet are good.
  • the tear property is preferred from the viewpoint that the transferability of the slippage preventing agent 55 is good.
  • the use of non-woven fabric made by the air-through method is preferable in that it can be easily obtained in thickness even at a low basis weight, giving it a good feeling (crispy feeling) and good touch.
  • the side sheet 61 is preferably an embossed sheet in which a number of embossed recesses having no corners, such as a substantially circular shape, an ellipse shape, and a rounded rectangle shape, are formed sporadically on a nonwoven fabric.
  • embossed recesses By forming embossed recesses, the contact area with the skin can be reduced, and by forming embossed recesses without corners, fluffing of the nonwoven fabric (mainly due to fiber breakage) can be prevented, and the benefits of improved skin feel There is.
  • the side sheet 61 extends from both sides of the absorbent main body 10 to form a wing upper layer 51 and a flap upper layer 71, respectively. Further, the back sheet 3 extends from both sides of the absorbent main body 10 to form a wing lower layer 52 and a flap lower layer 72, respectively.
  • the wing part 5 and the rear flap 7 are different in the position (excretion part facing part A / rear part C), the usage method (use by folding / use without folding), etc.
  • the basic configuration (particularly the configuration in the thickness direction) itself is the same. Therefore, the description regarding the wing part 5 described above or below also applies to the rear flap 7 as appropriate.
  • the side leak-proof portion 6 has a front sheet B of the absorbent main body 10 on the front end side and the outer edge side of the front portion B by a front seal line 84. Or it is bonded to the back sheet 3.
  • the front seal line 84 is formed by, for example, heat sealing, ultrasonic sealing, or high frequency sealing. Note that seal lines 81, 82, and 83, which will be described later, are formed in the same manner.
  • the side leak-proof portion 6 has an excretory portion facing portion A on its outer edge side on the back sheet 3 of the absorbent main body 10 by the excretory portion facing portion seal line 81. It is joined to.
  • the excretion part facing part seal line 81 is provided so as to be convexly curved inward in the width direction continuously extending from one base of the wing part 5 to the other base.
  • the base of the wing part 5 is located at the front end part and the rear end part of the boundary line (details will be described later) between the absorbent main body 10 and the wing part 5.
  • the side leak-proof portion 6 has a rear portion C on the outer edge side and rear end side of the rear portion C by a rear seal line 83, so It is joined to the seat 3 or the face sheet 2.
  • the rear seal line 83 is provided on the front end portion side and the rear end portion side of the side leak-proof portion 6 located in the rear portion C and is separated in the longitudinal direction.
  • the surface sheet 2 is provided with side seals 84, 81, and 83 provided in the side leak-proofing part 6 in a region overlapping the side leak-proofing part 6 in plan view. It is joined to the back sheet 3 of the absorbent main body 10 through the leaking part 6.
  • the top sheet 2 does not overlap with the side leak-proof part 6 in a plan view! /, In the area! /, Even though the front seal line 84 and the rear seal line 83 are used, Bonded to sheet 3.
  • the front seal line 84 extends continuously in a substantially semicircular arc shape from the left side edge of the front part B of the absorbent body 10 to the right side edge via the front end edge.
  • the rear seal line 83 continuously extends to the rear edge of the rear part C of the absorbent main body 10.
  • the wing upper layer 51 and the wing lower layer 52 are joined by a wing base end seal line 82.
  • the wing base end seal line 82 is spaced apart in the longitudinal direction only on the front end side and the rear end side of the wing base end portion 53.
  • the flap upper layer 71 and the flap lower layer 72 are joined by the rear seal line 83 extending from the front end side and the rear end side in the side leakage preventing portion 6! .
  • the rear seal line 83 is provided on the front end portion side and the rear end portion side of the flap base end portion 73 so as to be separated in the longitudinal direction.
  • the fold line (see FIG. 53) formed when the wing part 5 is folded back to the back sheet 3 side of the absorbent main body 10 is the boundary line between the absorbent main body 10 and the wing part 5. It becomes.
  • the folding guide line in the first embodiment is the excretory part facing part seal line 81, and therefore the folding line is also the excretion part facing part seal line 81.
  • the boundary line between the absorbent main body 10 and the rear flap 7 is directed from the position closest to the rear part C of the boundary line between the absorbent main body 10 and the wing part 5 toward the rear end of the absorbent main body 10 along the longitudinal direction. It is a straight line.
  • each of the pair of side leak-proof portions 6 has a side leak-proof portion seal line 62 including a side leak-proof portion first seal line 63 and a side leak-proof portion second seal line 64. It is provided.
  • the side leak-proof portion first seal line 63 is provided in the excretory portion facing portion A, and is curved to protrude outward in the width direction and extends in the longitudinal direction.
  • the length of the side seal portion first seal line 63 is substantially the same as the length of the wing base end portion 53 along the longitudinal direction of the absorbent main body 10.
  • the side leakage preventing part second seal line 64 is provided separately from each of the front part B and the rear part C, and has a zigzag shape along the longitudinal direction.
  • the side leak-proof portion first seal line 63 is adjacent to the inner side in the width direction of the excretory portion-facing portion seal line 81 that is a folding guide wire, and joins the side leak-proof portion 6 to the top sheet 2.
  • Side leak-proof portion first seal line 63 and side leak-proof portion second seal line 64 are side leak-proof portion second seal wire 64, side leak-proof portion first seal line 63 and side leak-proof portion second. It continues from the front part B through the excretory part facing part A to the rear part C in the order of the seal line 64.
  • the side leak-proof portion 6 is joined to the upper surface of the top sheet 2 of the absorbent main body 10 by the side leak-proof portion seal wire 62.
  • the side leakage preventing part seal wire 62 can be provided so that the side leakage preventing part 6 is fixed to the absorber 4 together with the surface sheet 2, and the side leakage preventing part 6 can be provided without interposing the surface sheet 2. 6 can be fixed directly to the absorbent body 4. [0422]
  • the region between the inner edge of the side leak-proof portion 6 and the side leak-proof portion seal wire 62 is not joined to the top sheet 2, and forms a pocket with the top sheet 2. .
  • the pocket is opened when worn, and body fluid that has moved outward in the width direction can be captured in the opened pocket, thereby improving leakage prevention.
  • it since it can be easily understood visually that the leak-proof property in the width direction is high, it is preferable in terms of giving the wearer a sense of security.
  • the side leak-proof portion seal spring 62 absorbs all or part of the fluid in a plan view in that the body fluid captured in the pocket is smoothly absorbed by the absorber 4 and the leak-proof property is further improved. It is preferable to overlap with the body 4. The body fluid trapped in the pocket is absorbed by the absorber 4 while moving from the front of the pocket to the back, or after reaching the back of the pocket, it is returned to the absorber 4 and absorbed.
  • the constituent members of the sanitary napkin 1 according to the first embodiment include various adhesives such as hot-melt adhesives (not shown) in addition to the above-described seal wires 8;! -84 and 62 Are further joined together.
  • the adhesive is provided mainly for the purpose of reinforcing the bonding by the respective seal wires 8;! -84 and 62.
  • Adhesives are, for example, between the wing upper layer 51 and the wing lower layer 52, between the flap upper layer 71 and the flap lower layer 72, between the absorber 4 and the back sheet 3, and the side leakage preventing part 6 and the top sheet 2.
  • the adhesive may be applied continuously (in the form of a plane) (so-called solid coating), but it is preferable that it is applied intermittently in consideration of the air permeability of the coated area. .
  • Examples of the intermittent application form include a spiral shape, a stripe shape extending in the width direction, an ⁇ shape, and a dot shape.
  • the wing base end part 53 is preferably less extensible than the wing front end part 54.
  • the difference in stretchability between the wing base end portion 53 and the wing tip end portion 54 is realized, for example, by joining the wing upper layer 51 and the wing lower layer 52 with an adhesive, a heat seal, or the like at the wing base end portion 53.
  • the extensibility of the wing base end portion 53 is the extensibility evaluated as a whole, that is, the laminate of the wing upper layer 51 and the wing lower layer 52.
  • the level of stretchability of the wing base end portion 53 and the wing tip end portion 54 is evaluated by the size of the stretch rate.
  • the elongation ratio of the wing base end portion 53 and the wing tip end portion 54 is measured by the following measuring method. [Measurement method of elongation rate]
  • the elongation rate (%) is (length of sample after elongation) / (length of sample before elongation) ⁇ 100.
  • the stretch rate is 150%
  • the stretch rate is 200%.
  • the thickness of the absorbent main body 10 is preferably 5 mm or less, more preferably 3.5 mm or less, in the excretory part facing part A.
  • the thickness of the absorbent main body 10 is preferably 3 mm or less, more preferably 2 mm or less in the front part B and the rear part C. If the thickness of the absorbent main body 10 is set in such a range, it will fit more along the front and back of the body where it will be difficult to feel uncomfortable at the time of wearing, and the pocket will open at the time of wearing. It is preferable because the layer is improved.
  • the thickness of the absorbent main body 10 is measured by the following measuring method.
  • a thickness of 5 cN / cm 2 is applied to the sample and the thickness under this condition is measured.
  • Wear pressure varies depending on body parts, individual differences, state (sitting / moving), etc., but clothing such as shorts should be worn in the central area (near the excretion point) opposite the excretion part. Since no load was applied to a load of 5 cN / cm 2 when no external pressure was applied except for use, measurement was performed at this load (5 cN / cm 2 ).
  • a thickness gauge PEACOCK DIAL PRIGHT GAUGES R5_C (manufactured by OZAKI MFG.CO ⁇ TD) was used for the thickness measurement. At this time, place a plate (acrylic plate with a thickness of about 5 mm) in the measurement area between the tip of the thickness gauge and the product, and adjust the size of the plate so that the load is 5 cN / cm 2 .
  • the shape of the plate is Circular or square.
  • the tear strength at the base of wing part 5 should be 500 ⁇ ;! OOOcN force S Even if the slipper 55 of wing part 5 is removed from the crotch part of the shorts after preferred use, the wing In order to further ensure that tearing starting from the root of part 5 does not occur, it is more preferably 650 cN or more.
  • the tear strength of the wing part 5 is measured by the following measuring method.
  • test piece should be 75mm front and back based on the center of the wing part in the longitudinal direction of the absorbent article in the product form (total 150mm: the length where the root part of the wing part remains reliably). Then, the absorbent article in the product form was cut in the width direction to make a sample, and further, a cut was made in the longitudinal direction at a length of 15 mm from the base part of the wing part, and this was used as a test piece.
  • the upper part of the Tensilon tensile tester is sandwiched between the absorbent main body part of the obtained test piece (the wing part is not sandwiched), and the lower part of the wing part is folded back by cutting into the lower chuck. was measured.
  • the absorbent main body 10 is disposed on the upper surface (inner surface) of the crotch portion (not shown) of the shorts, and is fixed to the crotch portion by the slip stopper 11.
  • the rear flap 7 is disposed on the upper surface (inner surface) of the shorts, and is fixed to the shorts by the slip stopper 75. Then, as shown in FIG. 53, the wing portion 5 is folded back to the lower surface (outer surface) side of the crotch portion, and the wing portion 5 is fixed to the outer surface of the crotch portion by the displacement preventing agent 55, so that the positional deviation is achieved. Can be installed while preventing.
  • the wing base end portion 53 is composed of a laminated body of the wing upper layer 51 and the wing lower layer 52, and the wing tip end portion 54 is only the wing upper layer 51. Consists of. For this reason, the wing part 5 is not only excellent in fit and feel to the body, but also provided in the wing part 5 when the sanitary napkin 1 in the individual state where the wing part 5 is difficult to stretch is taken out from the packaging material.
  • the wing 5 is peeled off from a covering sheet (not shown) for covering the applied slip stopper 55.
  • the rigidity of the wing part 5 is high! /, The operability of turning the wing part 5 is high when attached to the shorts. Furthermore, since the strength near the folded part of the wing part 5 is high, when the sanitary napkin 1 is peeled off from the shorts and discarded after use, the wing part 5 is located near the wing base end part 53! It does not break, and part of the wing part 5 does not remain attached to the shorts.
  • the wing base end portion 53 has lower extensibility than the wing tip end portion 54, the effect of preventing the wing portion 5 from being broken is improved.
  • an excretory part-facing part seal line 81 is provided on the outer side in the width direction of the absorbent body 4 as a folding guide line that is curved inwardly in the width direction, and the wing part 5 is connected to the absorbent body 10.
  • the fold line of the wing part 5 is formed to bend along the fold guide line (excretion part facing part seal line 81). Therefore, since the wing part 5 is folded back along the side edge shape of the crotch part of the shorts (usually recessed toward the inner side in the width direction), the sanitary napkin 1 can be stably attached to the shorts. High nature.
  • the side leakage preventing portion 6 is adjacent to the inner side in the width direction of the folding guide wire (excretion portion facing portion sealing line 81), and the side leakage preventing portion 6 is joined to the top sheet 2.
  • a leakage seal wire 62 (side leakage prevention portion first seal wire 63) is provided. For this reason, the rigidity of the inner region in the width direction of the folding guide line is increased, and the folding line is clearly formed. The folding operability of the wrapping part 5 is improved.
  • the wing part 5 is folded back to the back sheet 3 side of the absorbent main body 10, whereas the rear flap 7 is not folded back.
  • the base of the rear flap 7 (in the present embodiment, the two bases are located at almost the same position) is the place where the sagging is most likely to occur in the sanitary napkin 1.
  • the wing base end portion 53 and the flap base end portion 73 are formed of a laminated body of the side sheet 61 and the back sheet 3 and have high rigidity. Therefore, the root and the rear flap of the wing portion 5 are high. The gap between the roots of 7 is less likely to occur.
  • the wing tip portion 54 and the flap tip portion 74 are formed of the side sheet 61 made of the embossed sheet, and the aggregate state of the fibers of the nonwoven fabric is dense as a whole.
  • the adhesiveness with the agent 55 and the adhesiveness between the flap tip 74 and the slip stopper 75 are excellent. Further, at the flap tip 74, bleeding in the width direction is less likely to occur due to the boss recess.
  • Fig. 54 shows the wing part 5 and the excretory part facing part A in the vicinity thereof in the sanitary napkin of the second embodiment of the absorbent article of the present invention (sixth invention).
  • the sanitary napkin 1 of the second embodiment is different from the sanitary napkin 1 of the first embodiment in the shape of the excretory part-facing portion seal line 81 that is a folding guide line.
  • the excretion part-facing part seal line 81 is a curved continuous line in the first embodiment, whereas in the second embodiment, it is a curved broken line (dot line). Included).
  • the excretory part-facing part seal line 81 extends over both bases of the wing part 5 macroscopically.
  • a curved folding line is provided. Since a return line can be formed, the sanitary napkin 1 of the second embodiment can achieve the same effects as the sanitary napkin 1 of the first embodiment. Also, the excretion part facing part seal line 81 By making the shape of a broken line, it is possible to reduce the rigidity of the seal wire 81 and improve the feeling of use.
  • FIG. 55 shows the wing part 5 and the excretory part facing part A in the vicinity thereof in the sanitary napkin of the third embodiment of the absorbent article of the present invention (sixth invention).
  • the sanitary napkin 1 of the third embodiment is different from the sanitary napkin 1 of the second embodiment in the shape of the excretory part-facing portion seal line 81 that is a folding guide line.
  • the excretory part-facing part seal line 81 extends macroscopically across the bases of the wing part 5, whereas in the third embodiment, It is provided only in the vicinity of both bases of the wing part 5, and is not provided between them.
  • the excretion part facing part seal line 81 provided in the vicinity of the both roots of the wing part 5 has a curved shape convex inward in the width direction indicated by a two-dot chain line in FIG. A line is formed. Therefore, the excretion part-facing part seal line 81 is also a folded induction line.
  • the excretion part facing part seal line 81 provided only in the vicinity of the both roots of the wing part 5, the excretion part facing part seal extending over the both roots of the wing part 5 in the second embodiment. Since the curved folded line can be formed in the same manner as the line 81, the sanitary napkin 1 of the third embodiment has the same effect as the sanitary napkin 1 of the second embodiment. In addition, by providing the seal line 81 only near the base of the wing part 5, the flexibility of the folded part of the wing part 5 when it is caught in shorts is maintained, and it becomes difficult to wrinkle. There is no loss.
  • FIG. 56 shows the wing part 5 and the excretory part facing part A in the vicinity thereof in the sanitary napkin of the fourth embodiment of the absorbent article of the present invention (sixth invention).
  • the sanitary napkin 1 of the fourth embodiment is different from the sanitary napkin 1 of the first embodiment in the shape of the excretory part-facing portion seal line 81 that is a folding guide line.
  • the curved continuous linear excretory part-facing part seal line 81 is located at both ends of the wing part 5 in the first embodiment, whereas the fourth embodiment.
  • both end portions thereof are located at positions shifted inward in the longitudinal direction from the bases of the wing portions 5.
  • a part of the folding line is formed along the excretion part-facing part seal line 81.
  • the remaining part of the folding line is formed along a line (indicated by a two-dot chain line in FIG. 56) connecting the root of the wing part 5 and the end of the excretory part facing part seal line 81.
  • the excretory part-facing part seal line 81 is also a folding guide line.
  • the sanitary napkin 1 of the fourth embodiment can The same effects as those of the sanitary napkin 1 of the embodiment are exhibited.
  • the wrinkles near the base of the wing part 5 that are most likely to be distorted in the folded part of the wing part 5 when wrapped in shorts are reduced. It becomes possible to improve the fit to shorts.
  • the two-layer region of the side leak-proof portion 6 is not limited to one formed by folding back one side sheet 61 in the width direction as in the above embodiment, and is formed by laminating two sheets. You can also. Further, the side leak-proof portion 6 may not have a two-layer region. That is, the side leakage preventing part 6 can be formed from one side sheet 61 that is not folded back.
  • the fold line and the fold guide line are curved inwardly in the width direction! /, But extend linearly along the longitudinal direction of the absorbent article (continuous line shape) And a broken line).
  • the absorbent article of the present invention is not limited to sanitary napkins, and is not limited to a panty liner (originated sheet), incontinence. It can also be applied to pads and the like.
  • the underwear to be worn is not limited to the show.
  • the side leakage preventing part of the present invention is excellent in flexibility and body followability, and has a high wearing feeling and leakage preventing property.
  • the absorbent article packaging structure of the present invention is suitable for the packaging of absorbent articles described above.
  • the absorbent article having the side leak-proof portion of the present invention (second invention) the body following property and the wearing feeling are excellent, and the leak-proof property is high.
  • the wearing feeling and the leak-proof property are excellent.
  • the absorbent article of the present invention has an absorbent main body, a wing portion, and a side leakage prevention portion, and the wing portion is formed from a side sheet that forms the side leakage prevention portion.
  • the absorbent main body can easily follow the body when the wing part, which the wing part is difficult to break, is freely caught in the crotch part of the shorts or immediately attached.
  • the wing-shaped flap portion of the present invention has a predetermined strength and is excellent in wearing feeling and operability.
  • the wing part has excellent fit and feel to the body, and the wing part is peeled off from the covering sheet covering the slip stopper. It's easy to do.
  • the wing portion where the wing portion has high folding operability is not easily broken in the vicinity of the base end portion.

Abstract

La présente invention concerne une serviette hygiénique (1) comportant une couche absorbante (11) capable de retenir un liquide et une couche d'inhibition de fuite (12) imperméable aux liquides et comprenant un long corps absorbant sensiblement vertical (10) et une paire de parties de prévention de fuite (5, 5) recouvrant toutes les deux des faces longitudinales de la surface du corps absorbant (10) pour être en contact avec la peau. Chacune de la paire de parties de prévention de fuite latérales(5, 5) est constituée d'une feuille (50) formant les parties de prévention de fuite latérales et la feuille (50) formant les parties de prévention de fuite latérales est repliée vers l'extérieur dans le sens de la largeur du corps absorbant de manière à assurer un bord replié (51) vers l'intérieur dans le sens de la largeur du corps absorbant (10). Une pluralité de reliefs (52, 52, …) sont formés dans la partie extérieure de la feuille formant les parties prévention de fuite latérales (50) dans le sens de la largeur du corps absorbant (10). Autour du bord replié (51) de chacune de la paire de parties de prévention de fuite latérales(5, 5), il est prévu une zone non liée (5a) dans laquelle les feuilles formant les parties prévention de fuite latérales (50) ne sont pas liées l'une à l'autre.
PCT/JP2007/064477 2006-09-04 2007-07-24 Article absorbant WO2008029558A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200780032694.5A CN101516303B (zh) 2006-09-04 2007-07-24 吸收性物品
KR1020097002209A KR101383696B1 (ko) 2006-09-04 2007-07-24 흡수성 물품

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
JP2006-239026 2006-09-04
JP2006239026A JP5030510B2 (ja) 2006-09-04 2006-09-04 吸収性物品及びその包装構造
JP2006277210A JP5084220B2 (ja) 2006-10-11 2006-10-11 生理用ナプキン
JP2006277209A JP2008093127A (ja) 2006-10-11 2006-10-11 吸収性物品
JP2006-277209 2006-10-11
JP2006-277210 2006-10-11
JP2006304265A JP5036279B2 (ja) 2006-11-09 2006-11-09 生理用ナプキン
JP2006-304265 2006-11-09
JP2006-312935 2006-11-20
JP2006312935A JP5030548B2 (ja) 2006-11-20 2006-11-20 生理用ナプキン及びその製造方法
JP2006316906A JP5030554B2 (ja) 2006-11-24 2006-11-24 吸収性物品
JP2006-316906 2006-11-24

Publications (1)

Publication Number Publication Date
WO2008029558A1 true WO2008029558A1 (fr) 2008-03-13

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KR (1) KR101383696B1 (fr)
TW (1) TWI450708B (fr)
WO (1) WO2008029558A1 (fr)

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US9173786B2 (en) 2013-05-20 2015-11-03 Kimberly-Clark Worldwide, Inc. Absorbent personal care article having wings and protective strips
USD772403S1 (en) 2015-05-29 2016-11-22 Kimberly-Clark Worldwide, Inc. Absorbent article
USD772401S1 (en) 2015-05-29 2016-11-22 Kimberly-Clark Worldwide, Inc. Absorbent article
USD772402S1 (en) 2015-05-29 2016-11-22 Kimberly-Clark Worldwide, Inc. Absorbent article
USD777910S1 (en) 2015-05-29 2017-01-31 Kimberly-Clark Worldwide, Inc. Absorbent article
USD789523S1 (en) 2015-05-29 2017-06-13 Kimberly-Clark Worldwide, Inc. Absorbent article
US10765564B2 (en) 2015-05-29 2020-09-08 Kimberly-Clark Worldwide, Inc. Flexible absorbent article with a lobed absorbent layer

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US9675498B2 (en) 2013-05-31 2017-06-13 Kimberly-Clark Worldwide, Inc. Absorbent article with non-uniform dimensioned side barriers

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