WO2009084643A1 - Couche jetable de type culotte - Google Patents

Couche jetable de type culotte Download PDF

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Publication number
WO2009084643A1
WO2009084643A1 PCT/JP2008/073764 JP2008073764W WO2009084643A1 WO 2009084643 A1 WO2009084643 A1 WO 2009084643A1 JP 2008073764 W JP2008073764 W JP 2008073764W WO 2009084643 A1 WO2009084643 A1 WO 2009084643A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
exterior sheet
waistline
waist
width direction
Prior art date
Application number
PCT/JP2008/073764
Other languages
English (en)
Japanese (ja)
Inventor
Takeshi Ihata
Yosuke Mori
Original Assignee
Daio Paper 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 JP2007340937A external-priority patent/JP4659020B2/ja
Priority claimed from JP2007340938A external-priority patent/JP4494458B2/ja
Application filed by Daio Paper Corporation filed Critical Daio Paper Corporation
Priority to CN200880122821.5A priority Critical patent/CN101909568B/zh
Priority to KR1020107016756A priority patent/KR101478864B1/ko
Publication of WO2009084643A1 publication Critical patent/WO2009084643A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49014—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the side panels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/49413—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
    • A61F13/49413—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
    • A61F13/4942—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier the barrier not being integral with the top- or back-sheet

Definitions

  • the present invention relates to a pants-type disposable diaper.
  • the pants-type disposable diaper has an absorbent body interposed between the liquid-permeable top sheet and the back sheet, has leg gathers on both sides, and covers from the back side through the crotch part to the abdomen side. And an exterior sheet attached to the outer surface of the interior body so as to cover the waistline and the crotch, and both sides of the back side portion and both sides of the abdominal side portion of the exterior sheet, Are often joined by heat sealing to form a side seal portion, and a waist opening and a leg opening are formed in advance in a pants-type structure (see Patent Documents 1 to 8).
  • a pants-type disposable diaper for example, as shown in FIG.
  • the exterior sheets 12F and 12B are formed by laminating a plurality of layers of sheet-like breathable materials 12, 21, and 22 in order to improve the fit to the body.
  • elastic elastic members 15 to 19 such as rubber thread are sandwiched and fixed between the sheet-like breathable materials 12, 21, and 22 along the width direction.
  • the lamination of the sheet-like breathable material is performed by bonding with an adhesive such as a hot-melt adhesive, or welding by heat sealing or ultrasonic sealing.
  • the conventional underpants-type disposable diaper has been deteriorated in air permeability and flexibility due to the fact that the entire exterior sheet is formed by bonding sheet-like breathable materials.
  • the side seal part is a part formed by laminating a plurality of sheet-like materials such as non-woven fabrics, and the number of laminations of the sheet-like material is different between the waist side end part and the crotch side end part of the side seal part. Therefore, there has been a problem that either one of the welds becomes too strong and peeling becomes difficult, or one of the welds becomes too weak to cause unintended peeling during use. For example, as shown in FIG.
  • the waist-side end portion of the outermost sheet-like material 12 is folded back to the innermost surface side,
  • the number of stacked sheet-like materials 12 in the upper portion of the side seal portion (upper portion in FIG. 25 (b)) is the sheet-like material in the lower portion. Therefore, the upper portion of the side seal portion is relatively strongly welded. In other words, if the upper part of the side seal part is manufactured so that it is properly welded, the lower part is not sufficiently welded, and the seal may be peeled off due to the strong force applied around the legs. When it is manufactured so that the upper part is strongly welded and peeling after use becomes almost impossible, it is extremely difficult to set appropriate conditions.
  • the main subject of this invention is improving air permeability and a softness
  • Another problem is to make both the side seal part secure sufficient sealing strength and ease of peeling, and improve the feel to improve the feeling of wearing.
  • the present invention that has solved the above problems is as follows.
  • ⁇ Invention of Claim 1> A cylindrical waistline formed by joining both sides of the ventral exterior sheet and both sides of the back exterior sheet; An interior body that absorbs excrement, provided from the center in the width direction of the inner surface of the ventral exterior sheet to the center in the width direction of the inner surface of the back exterior sheet,
  • the belly side exterior sheet and the back side exterior sheet have a waist side end, a waistline upper end, a waistline middle part, and a waistline lower end in order from the top in the same vertical range as the side seal part to be joined.
  • At least one of the abdominal exterior sheet and the back exterior sheet; the waist side end portion and the waistline lower end portion are formed by bonding together a plurality of layers of sheet-like breathable materials, and between the sheet-like breathable materials
  • the elastic elastic member is clamped and fixed in a state of being stretched along the width direction, and at least one of the upper part of the waistline and the middle part of the waistline is made of a single-layer sheet-like breathable material. Does not have adhesive to fix,
  • a pants-type disposable diaper characterized by that.
  • at least one of the abdominal exterior sheet and the back exterior sheet has at least one of the upper part of the waistline and the middle part of the waistline made of a single-layer sheet-like air-permeable material, Therefore, the air permeability and flexibility are improved.
  • the waist-side end portion and the waistline lower end portion of at least one of the abdominal-side exterior sheet and the back-side exterior sheet are formed by laminating a plurality of layers of sheet-like breathable materials and between the sheet-like breathable materials. Since the elastic stretchable member is clamped and fixed in a state of being stretched along the width direction, it is possible to sufficiently secure the fit around the waist and the legs around the pants-type disposable diaper.
  • the waist-side end portion and the waistline lower end portion of the abdominal-side exterior sheet and the back-side exterior sheet are formed by laminating a plurality of layers of sheet-like breathable materials, and an elastic stretch member is provided between the sheet-like breathable materials. It is clamped and fixed in a stretched state along the width direction,
  • the waistline upper end portion of the ventral exterior sheet and the waistline middle portion of the backside exterior sheet are made of a single-layer sheet-like breathable material, and have an elastic stretch member and an adhesive for fixing the elastic stretch member.
  • the underpants type disposable diaper of Claim 1 which is not. (Function and effect)
  • the upper part of the waistline of the abdominal exterior sheet and the middle part of the waistline of the backside exterior sheet are made of a single-layer sheet-like breathable material, and do not have an elastic stretch member and an adhesive for fixing the elastic stretch member. Therefore, it becomes excellent in air permeability and flexibility.
  • the waist-side end and the waistline lower end of the abdominal exterior sheet and the back exterior sheet are formed by laminating a plurality of layers of sheet-like breathable materials, and an elastic elastic member is provided between these sheet-like breathable materials. Since it is clamped and fixed in the state extended
  • the back-side exterior sheet has a back-side extension portion that extends downward in the same vertical range as the side seal portion, and the back-side extension portion overlaps the interior body in the width direction center.
  • Part and a buttock cover part extending on both sides thereof, and the back extension part is formed by bonding a plurality of layers of sheet-like breathable materials and between the sheet-like breathable materials.
  • the elastic elastic member is sandwiched and fixed in at least the buttocks cover part in a state extending in the width direction, and the contraction force in the width direction at the lower end of the waistline of the belly side exterior sheet is applied to the back side exterior sheet.
  • the back side exterior sheet is provided with a back side extending part that extends below the side seal part, both side parts on the lower side of the buttock are covered by the buttock cover part that is a part on both sides of this part.
  • the elastic stretchable member is provided in the buttock cover portion in a state of being stretched along the width direction so that the both side portions of the extension portion do not rip off.
  • the waistline middle part of the ventral exterior sheet and the waistline upper end part of the backside exterior sheet are formed by laminating a plurality of layers of sheet-like breathable materials and elastic elastic members between the sheet-like breathable materials
  • the middle part of the waistline is a part having a plurality of layers, elastic elastic members and adhesives, and the upper end part of the waistline does not have elastic elastic members and adhesives.
  • the middle part of the waistline is a part that does not have the elastic elastic member and the adhesive
  • the upper part of the waistline is a part that has a plurality of layers, the elastic elastic member and the adhesive.
  • the waistline middle part of the ventral exterior sheet and the waistline upper end part of the backside exterior sheet are made of a single-layer sheet-like breathable material, and have an elastic stretch member and an adhesive for fixing the elastic stretch member.
  • the underpants type disposable diaper of Claim 3 which is not. (Function and effect)
  • the waistline middle part of the abdominal exterior sheet and the waistline upper end part of the backside exterior sheet are also made of a single-layer sheet-like breathable material and do not have an elastic stretch member and an adhesive for fixing the elastic stretch member.
  • the underpants type disposable diaper of Claim 3 whose side seal part inclination
  • the side seal portion inclination test measures the inclination angle of the side seal portion as follows. That is, first, as shown in FIG. 28 (a), only the waistline portion 12 from which the absorbent main body is removed from the paper diaper is prepared as a specimen, and this specimen 12 is the center line in the product width direction of the ventral-side exterior sheet 12F.
  • the center line of the product width direction of the back side exterior sheet 12B is folded so that the inner surfaces overlap each other, and the base end line L1 of both side seal portions 12A (the edge of the side seal portion 12A on the center side in the width direction) Try to stack.
  • the specimen 12 in the folded state is sandwiched by one chuck C1 of the tensile tester over the entire product vertical direction from the one fold line to the side seal part side, and from the other fold line to the side seal part side.
  • a range of 10 mm is sandwiched by the other chuck C2 of the tensile tester over the entire product vertical direction, and a tensile test is performed along the product belly and back direction indicated by the arrow.
  • the distance between chucks (the length during natural contraction) when the specimen 12 is naturally contracted without being pulled is defined as A, and the distance between chucks when the specimen 12 is stretched without contraction by the elastic elastic member (at the time of maximum extension).
  • A the distance between chucks when the specimen 12 is stretched without contraction by the elastic elastic member (at the time of maximum extension).
  • the length is B
  • the upper and lower ends of the side seal base line L1 with respect to the product vertical direction when the distance between the chucks is (A + B) / 2 as shown in FIG. Is measured using a protractor, and this is defined as a side seal portion inclination angle.
  • the contraction force is a stress applied to a certain width (length in the front-rear direction) of the sheet when the sheet is pulled in the product width direction, and is measured as follows.
  • a region to be measured is cut from the waistline portion 12 to be a specimen, and one end of the specimen in the product width direction is sandwiched by one chuck C1 of the tensile tester, and the other end is clamped by the other chuck C2.
  • a tensile test is performed along the product width direction.
  • the distance between chucks (the length during natural contraction) when the specimen is naturally contracted without being pulled is defined as A, and the distance between chucks (the maximum length when stretched) when the specimen is pulled until it is not contracted by the elastic elastic member.
  • the underpants type disposable diaper of Claim 2 comprised so that the edge of the front-end part of the said interior body and a rear-end part may not contain the sheet
  • seat material which consists of a film material or a paper material.
  • the side seal part which is a part where both side parts of the abdominal side exterior sheet and both side parts of the back side exterior sheet are welded and joined
  • the number of sheet-like materials laminated at the waist side end part and the sheet form at the crotch side end part The number of laminated materials is the same, and the number of laminated sheet-like materials at the intermediate portion between the waist-side end portion and the crotch-side end portion is the sheet-like material at the waist-side end portion and the crotch-side end portion.
  • the pants-type disposable diaper according to claim 2 wherein the number is equal to or less than the number of laminated layers.
  • the number of sheet-like materials stacked in the side seal portion is the same in the waist side end portion and the crotch side end portion, and in the intermediate portion between them, the waist side end portion and the crotch side
  • the same number or less as the end portion it is possible to obtain the same joint strength at the waist side end portion and the crotch side end portion by forming the side seal portion evenly, and at the intermediate portion, the same or less Weaker bonding strength can be obtained. Therefore, there is no unintentional peeling during wearing and use at the waist side end and crotch side end of the side seal part, which is a part where particularly strong force is applied during wearing and which is the starting point or end point of peeling.
  • the side seal part is formed so as to have an appropriate joining strength that is easy to peel off later, smooth peeling is required for peeling after use (it is not preferable to be stronger than the starting point and end point). Since the strength is equal to or less than that, the entire side seal portion is not unintentionally peeled off during mounting, and is easily peeled off after use.
  • the abdominal exterior sheet and the back exterior sheet are separated without being continuous, and in each exterior sheet, the waist side end part and the crotch side end part have the same folded structure, and the waist side folded part and
  • the abdominal exterior sheet and the back exterior sheet are formed so that the sheet-like material forming the outermost surface is folded back so as to cover from the waist side edge of the innermost surface to the crotch side edge or the vicinity thereof at the waist side edge.
  • the edge of the sheet-like material of each exterior sheet is exposed, but the waist side where peeling and deterioration of the touch are particularly likely to occur.
  • the present invention is particularly suitable for the side seal portion as described in this section.
  • front-rear direction means a direction connecting the ventral side (front side) and back side (rear side)
  • width direction means a direction (left-right direction) orthogonal to the front-rear direction
  • vertical direction means the wearing state of the diaper, that is, the direction perpendicular to the waistline direction when the diaper is folded in two at the crotch so that both the front body side and the back body side of the diaper are overlapped, In other words, it means the direction connecting the waist opening WO side and the crotch side.
  • ⁇ First form> 1 to 9 show a first type of pants-type disposable diaper.
  • This pants-type disposable diaper has an abdominal exterior sheet 12F that covers the abdominal side of the wearer's girth and a back exterior sheet 12B that covers the back side, and both side edges in the width direction of the abdominal exterior sheet 12F.
  • Both side edges in the width direction of the backside exterior sheet 12B are configured to be welded and joined by heat sealing, ultrasonic welding, or the like over the entire vertical direction of the overlapping portion to form the cylindrical waistline portion 100.
  • Reference numeral 12A denotes a side seal portion which is a portion where both the exterior sheets 12F and 12B are welded and joined.
  • a well-known pattern can be used as the welding pattern of the side seal portion 12A without any particular limitation.
  • linear or dotted joints along the vertical direction or oblique direction are arranged in a row at predetermined intervals along the vertical direction.
  • a pattern formed of a plurality of rows, a pattern in which joints are continuous in a straight line along the vertical direction, and the like can be employed.
  • the side seal part 12A is generally composed of a collection of small weld parts, and it is common to have a bonding pattern with a low ratio of the weld area in the side seal part 12A. Since it is not necessary to consider the ease of tearing in the extended seal portion 12E, the second elongated elastic elastic member 16 is reliably welded and fixed by making the ratio of the weld area higher than that of the side seal portion 12A. You may make it do. Further, the interior body 200 is provided so as to extend from the center in the width direction of the inner surface of the abdominal exterior sheet 12F in the waistline portion 100 to the center in the width direction of the inner surface of the back side exterior sheet 12B.
  • the side exterior sheet 12B is not continuous on the crotch side and is separated. This separation distance Y can be about 150 to 250 mm.
  • the upper opening of the waistline portion 100 becomes a waist opening WO through which the wearer's torso passes, and the lower edge of the waistline portion 100 and the interior body 200 on both sides in the width direction of the interior body 200.
  • the portions surrounded by the side edges are leg openings LO through which the legs pass.
  • the interior body 200 extends from the back side so as to cover the abdominal side through the crotch part, and is a part that receives the excrement and absorbs and holds the liquid, and the waistline part 100 holds the interior body 200. This is the part that supports the wearer.
  • the abdominal side exterior sheet 12F and the back side exterior sheet 12B are formed by folding and bonding one sheet-like breathable material 12 into a two-layer structure as shown in FIGS.
  • a waist-side end W, a waistline upper end U1, a waistline intermediate part U2, and a waistline lower end U3 are provided in the same vertical range as the side seal part 12A from the top.
  • the sheet-like breathable material 12 is folded back from the outermost surface to the innermost surface with the waist side end edge (the edge of the waist opening WO) as a fold line throughout the width direction.
  • the folded portion 21 is a layer covering the waist side end W from the middle position in the vertical direction on the innermost surface, and the sheet-like breathable material 12 extends from the outermost surface with the crotch side edge as a folding line over the entire width direction.
  • the folded portion 22 is a layer covering the lower end U3 of the waistline on the innermost surface. Then, the crotch side edge of the waist side folded part 21 and the waist side edge of the crotch side folded part 22 are separated in the vertical direction so that the waist side folded part 21 and the crotch side folded part 22 do not overlap each other.
  • the spaced-apart portion 23 is a thin layer portion made of a single-layer sheet-like breathable material 12.
  • the position of the crotch side edge of the waist side folded portion 21 can be determined as appropriate, but the position of the crotch side edge of the waist side folded portion 21 is the front end portion of the interior body 20 in the abdominal exterior sheet 12F.
  • the front end portion 201 and the rear end portion 202 of the interior body 200 are connected to the waist side folded portion 21 and its outer surface side.
  • the edges of the interior body constituent materials exposed at the front edge and the rear edge of the interior body 200 can be covered with the waist-side folded portions 21 of the exterior sheets 12F and 12B.
  • the sheet-like breathable material 12 constituting each of the exterior sheets 12F and 12B is not particularly limited as long as it can be joined by welding, but is preferably a nonwoven fabric.
  • the nonwoven fabric is not particularly limited as to what the raw fiber is.
  • synthetic fibers such as olefins such as polyethylene and polypropylene, polyesters and polyamides, recycled fibers such as rayon and cupra, natural fibers such as cotton, and mixed fibers and composite fibers using two or more of them. Etc. can be illustrated.
  • the nonwoven fabric may be manufactured by any processing.
  • spunlace nonwoven fabric spunlace nonwoven fabric, spunbond nonwoven fabric, SMS nonwoven fabric, melt blown nonwoven fabric, needle punched nonwoven fabric, thermal bond nonwoven fabric, air-through nonwoven fabric, point bond nonwoven fabric, etc.
  • spunbond nonwoven fabric and SMS nonwoven fabric are strong and elastic. Since it is excellent in adhesiveness with a member, it is preferable.
  • the basis weight is preferably about 10 to 40 g / m 2 , particularly about 10 to 22 g / m 2 .
  • both folded portions 21 and 22 in both exterior sheets 12F and 12B are fixed to opposite outermost surface portions with a hot melt adhesive or the like, and both folded portions 21 and 22 Elongated elastic members 15 to 19 such as rubber thread are sandwiched and fixed in a predetermined stretched state between them and the outermost surface portion facing this.
  • a hot melt adhesive or the like As the elongated elastic elastic members 15 to 19, synthetic rubber or natural rubber may be used.
  • Hot melt bonding, heat sealing, or ultrasonic bonding is used to bond the sheet-like breathable materials 12 and 12 to the exterior sheets 12F and 12B and to fix the elongated elastic elastic members 15 to 19 sandwiched therebetween. it can. If the entire surface of the exterior sheets 12F and 12B is firmly fixed, the texture of the sheet is impaired, which is not preferable.
  • the back-side exterior sheet 12B includes a back-side body portion 13 that occupies the same vertical range as the side seal portion 12A formed by the welded portion group, and a back-side extension that extends below the back-side body portion 13. And an exit portion 14.
  • the back extension part 14 has a width direction center part 14 ⁇ / b> M overlapping with the interior body 200, and a buttock cover part 14 ⁇ / b> C extending on both sides thereof.
  • the shape of the dorsal extension 14 can be determined as appropriate, and is rectangular in the examples shown in FIGS. 1 to 10, but as shown in FIGS. 18 and 19, the upper end of the dorsal extension 14 is It is possible to extend the lower side of the back side main body part 13 with the same width as the back side main body part 13 and cut the lower side into a shape that becomes narrower as it approaches the crotch side. Further, a portion having the same width as the back side main body portion 13 can be omitted. If comprised in this way, the outer edge 14e of the buttock cover part 14C will come in the shape of a straight line or a curve which approaches the interior body 200 side as it approaches the crotch side. The shape is also beautiful.
  • the width direction length 14x of the collar part cover part 14C (the outer edge 14e of the collar part cover part 14C and the side edge of the interior body 200)
  • the maximum separation distance in the width direction is preferably 80 to 160 mm
  • the vertical length 14y (extension length) of the collar cover portion 14C is preferably 30 to 80 mm.
  • the outer edge 14e of the buttock cover portion 14C is curved as shown in FIGS. 18 and 19, a rectangular shape determined by the widest portion in the width direction and the widest portion in the vertical direction of the dorsal extension portion 14 is used.
  • the area is S, it is appropriate that the area of the back extension 14 is 20 to 80%, particularly 40 to 60% with respect to S.
  • the back body 13 can be conceptually divided into an upper end (waist part) W and a lower part U below the upper part in the vertical direction, and the range varies depending on the size of the product.
  • the vertical length of the upper end W can be 15 to 80 mm, and the vertical length of the lower portion U can be 35 to 220 mm.
  • the waist side end part W which is the upper end part of the back side main-body part 13, it continues over the whole width direction between the waist side return part 21 (outermost inner surface part) and the outermost surface part in the sheet-like breathable material 12.
  • the plurality of back-side waist elastic elastic members 17 are fixed in a state where they are spaced apart in the vertical direction and stretched along the width direction at a predetermined stretch rate.
  • one or more of the back-side waist elastic elastic members 17 disposed in the region adjacent to the lower portion U of the back-side main body 13 may overlap the interior body 200. Alternatively, it may be provided on both sides in the width direction except for the central portion in the width direction that overlaps the interior body 200. In the illustrated example, the back-side waist elastic elastic member 17 that overlaps the interior body is disposed between the interior body 200 and the outermost portion, but is disposed between the interior body 200 and the waist-side folded portion. May be.
  • the back waist elastic elastic member 17 thread rubber having a thickness of 300 to 1240 dtex, particularly about 470 to 940 dtex, about 3 to 22 pieces at an interval of 4 to 12 mm, and an elongation rate of 150 to 400%, particularly 220 to It is preferable to fix at about 320%. Further, it is not necessary for all of the back side waist elastic elastic members 17 to have the same thickness and extension rate. For example, the elastic waist members may have different thicknesses and extension rates at the upper and lower portions of the back waist part. Good.
  • a plurality of first elongate elastic elastic members 15 are arranged in the vertical direction so as to be continuous over the entire width direction at each of the upper side and both sides in the width direction except for the central portion in the width direction that overlaps the interior body 200 therebetween. Are fixed in a state of being stretched along the width direction at a predetermined stretch rate.
  • a plurality of second elongate elastic elastic members 16 are vertically spaced from each other on both sides in the width direction (at least over the entire buttock cover portion 14C) with a predetermined interval therebetween. It is fixed in a stretched state along the width direction at a stretch rate.
  • the second elongated elastic elastic member 16 about 2 to 10 thread rubbers having a thickness of about 300 to 1240 dtex, particularly about 470 to 940 dtex, and an elongation ratio of 150 to It is preferable to fix at 300%, particularly 180 to 260%.
  • the abdominal side exterior sheet 12F consists of only the abdominal side main body part (the part occupying the same vertical range as the side seal part 12A by the welded part group) basically the same as the back side main body part 13 of the back side exterior sheet 12B. It is a rectangular shape extending along the waistline direction, and does not have the back-side extending portion 14 like the back-side exterior sheet 12B. That is, among the waist side end W which is the upper end part of the abdominal exterior sheet (abdominal side main body part) 12F and the waist part U located below the waist side end W, the sheet-like breathable material 12 is provided at the waist side end W.
  • ventral side waist elastic elastic members 18 are vertically spaced so as to be continuous over the entire width direction between the waist side folded portion 21 (the innermost surface portion) and the outermost surface portion of It is fixed in a stretched state along the width direction at a stretch rate of.
  • the ventral waist elastic elastic member 18 is preferably as close as possible to the back waist elastic elastic member 17 in terms of number, thickness, stretch rate, spacing, and vertical arrangement, but may be different.
  • the difference in number is 6 or less, preferably 3 or less
  • the difference in thickness is 450 dtex or less, preferably 300 dtex or less
  • the difference in elongation is 100% or less, preferably 40% or less
  • the difference in spacing Is 10 mm or less preferably 5 mm or less.
  • a plurality of third elongated elastic elastic members 19 are vertically spaced apart from each other on the upper side and both sides in the width direction except for the central portion in the width direction that overlaps the interior body 200. And is fixed in a state of being stretched along the width direction at a predetermined stretch rate.
  • the vertical disposition range of the third elongated elastic elastic member 19 may be a part of the lower portion, it is preferable that the third elongated elastic elastic member 19 is substantially the whole (a range in which the expansion / contraction force acts on the whole).
  • the third elongated elastic elastic member 19 is preferably as close as possible to the first elongated elastic elastic member 15 in terms of number, thickness, stretch rate, spacing, and vertical arrangement, but may be different.
  • the difference in number is 10 or less, preferably 5 or less
  • the difference in thickness is 450 dtex or less, preferably 300 dtex or less
  • the difference in elongation is 100% or less, preferably 40% or less
  • the difference in spacing Is 10 mm or less preferably 5 mm or less.
  • the waistline upper end U1 and the waistline middle part U2 of each of the abdominal exterior sheet 12F and the back exterior sheet 12B are made of a single-layer sheet-like breathable material 12, and fix the elastic stretchable member and the elastic stretch member.
  • the thin layer portion 23 does not have an adhesive for the purpose.
  • the portion U2 has one sheet-like breathable material 12 laminated, so that the breathability and flexibility of the exterior sheets 12F and 12B are improved.
  • the number of sheet-like breathable materials 12 laminated at the waist-side end of the side seal portion 12A is equal to the number of sheets-like breathable material 12 laminated at the crotch-side end (four).
  • the number of sheet-like breathable materials 12 stacked in the intermediate portion between the waist side end portion and the crotch side end portion is less than that (2 sheets). Therefore, the joint strength of the sheet-like air-permeable material 12 at the waist side end portion and the crotch side end portion in the side seal portion 12A is substantially equal and the side seal portion is formed only by forming the side seal evenly in the side seal portion 12A. It becomes easy to make it the strongest in each part of 12A.
  • the waist-side end and crotch-side end of the side seal portion 12A are portions to which particularly strong force is applied during mounting and are portions to be the starting point or end point of peeling, and the intermediate portion of the side seal portion 12A is after use
  • smooth peeling is required (it is not preferable to be stronger than the start point and end point). Therefore, when configured as described above, there is no unintended peeling of the side seal portion 12A during mounting. And it becomes easy to peel off after use.
  • the conventional type shown in FIG. 20 has six sheets of breathable material 12 laminated at the waist end and four sheets of breathable material 12 laminated at the crotch end. Therefore, it is difficult to obtain the above effects.
  • the vertical length of the thin layer portion 23 can be determined as appropriate. However, if the length is excessively long, the number of portions where the elastic elastic members 15 to 19 can be provided decreases, and it becomes difficult to ensure the fit. It is preferable to be about 1/20 to 1/8 of the length in the front-rear direction in the unfolded state.
  • both the waistline middle portion U2 of the ventral outer layer sheet 12F and the waistline middle portion U2 of the backside outer layer sheet 12B do not have elastic elastic members, and the back extension portion 14 is the second.
  • the contraction force of the ventral extension part is greater than the dorsal extension part 14, or When the back side extension part is larger than the abdominal side extension part), the contraction force balance between the abdominal side and the back side with the side seal part 12A as a boundary is broken, and the lower end side of the side seal part 12A is the back side.
  • the side seal portion 12A of the back side exterior sheet 12B and the abdominal side exterior sheet 12F shifts to the back side toward the lower end side as shown in FIG. , This shift causes the buttock cover There is a possibility that the bulge and turn-up occurs in the 4C.
  • the contraction force by the respective elongated elastic expansion members 18 and 19 of the ventral side exterior sheet 12F and the contraction force by the respective elongated elastic expansion members 15 to 17 of the back side exterior sheet 12B are: It is preferable to balance the joint portion 12A as a boundary so that the side seal portion inclination angle is 20 degrees or less, particularly preferably 10 degrees or less, and more preferably 5 degrees or less.
  • the shrinkage force in the width direction at the waistline lower end portion U3 of the ventral outer layer sheet 12F, the shrinkage force in the width direction at the waistline lower end portion U3 of the backside outer layer sheet 12B, and the widthwise direction in the backside extension portion 14 By making it stronger than the contraction force, the contraction force by the respective elongated elastic expansion members 18 and 19 of the abdominal exterior sheet 12F and the contraction force by the respective elongated elastic expansion members 15 to 17 of the back exterior sheet 12B are joined.
  • the side seal portion inclination angle is reduced by balancing at 12A as a boundary, and the rising and swelling of the flange cover portion 14C can be prevented.
  • the “side seal portion inclination angle” and the “shrinkage force” are as described above.
  • the abdominal side exterior sheet 12F in the illustrated form is composed of only the portion that occupies the same vertical range as the side seal portion 12A, but, similarly to the back side, the belly side occupying the same vertical range as the side seal portion 12A. It can also be set as the structure which consists of a side main-body part and the abdominal-side extension part extended below this abdominal-side main-body part. Thereby, the leg periphery shape of the abdominal exterior sheet
  • seat 12F can be made into the shape fitted along a buttock.
  • the area of the ventral extension and the length in the front-rear direction are preferably 10 to 80%, more preferably 20 to 50% of the area of the back extension and the length in the front-rear direction.
  • the first, second, and third elongated elastic elastic members 15, 16, and 19 are provided on both sides in the width direction except for the center portion in the width direction that overlaps the interior body 200.
  • the inner body 200 and the outer sheets 12F and 12B are difficult to peel off.
  • one side in the width direction across the inner body 200 there is an elastic stretch member from one side to the other side, but the elastic stretch member is cut at the central portion in the width direction overlapping with the interior body 200, and the stretch force does not act (substantially no elastic stretch member is provided) (Equal) is also included. Also, a part of the first, second and third elongated elastic elastic members 15, 16 and 19, or the elastic force acts over the entire width direction of the back side main body part 13 and the back side extension part 14. The whole can be provided across the interior body 200 from one side in the width direction to the other side.
  • the interior body 200 can take any shape, but is rectangular in the illustrated form. As shown in FIG. 3, the inner body 200 includes a surface sheet 30 on the body side, a liquid-impermeable sheet 11, and an absorbent element 50 interposed therebetween. On the back side of the liquid-impermeable sheet 11, a crotch portion is provided so as to cover the entire back surface of the interior body 200 or to cover the entire portion exposed between the abdominal exterior sheet 12F and the back exterior sheet 12B.
  • the exterior sheet 12M can also be fixed.
  • an intermediate sheet (second sheet) 40 can be provided between the top sheet 30 and the absorbent element 50 in order to quickly transfer the liquid that has passed through the top sheet 30 to the absorbent element 50.
  • barrier cuffs 60 and 61 standing on the body side can be provided on both sides of the interior body 200.
  • the constituent members of the interior body 200 can be appropriately fixed to each other by solid, bead or spiral application such as hot melt adhesive.
  • the interior body 200 can also be detachably attached to the exterior sheets 12F and 12F using a mechanical fastener or an adhesive material.
  • both sides of the interior body 200 particularly in the vicinity of the intersection point between the width direction both side edges of the interior body 200 and the lower end edge of the ventral side exterior sheet 12F and in the vicinity of the intersection point between the lower end edge of the back side exterior sheet 12B.
  • the rigidity of the other parts for example, the intermediate part in the width direction, is preferably lowered to 5 to 35 cN / 50 mm, preferably 10 to 25 cN / 50 mm in consideration of flexibility.
  • the range in which the rigidity is increased is a range of 5 to 30 mm in the width direction from both side edges of the interior body 200 to the center side in the width direction, and the interior body 200 and the abdominal exterior sheet 12F and the back exterior sheet 12B in the front-rear direction. It is preferable that the distance is within 50 mm in the front-rear direction from the intersection (not including the portion overlapping with the constricted portion 56N of the absorber 56).
  • Stiffness rigidity
  • JIS K-7171 plastic-bending stiffness test method
  • curvature radius R2 5.0 ⁇ 0.2 mm at the tip of the support plate
  • the test piece is prepared by removing the elastic elastic member that affects the measurement from the inner body 200 and cutting it into a rectangle having a diaper longitudinal direction of 80 mm and a diaper width direction of 50 mm.
  • 50 mm in the unit of the flexural rigidity value is the length of the short side of the test piece, and is the width of the test piece bent with the indenter at the time of the test.
  • the interval between the tips (upper ends) of both tip portions being 50 mm, arranged in parallel with each other and the height positions of both tip portions being aligned, The test piece is placed so that its longitudinal direction is directed in a direction perpendicular to each plate, and the tip of the indenter is arranged so as to slightly touch the test piece.
  • a load-deflection curve is obtained by lowering the indenter under conditions of a load cell of 5 kg (range 196 cN) and a speed of 30 mm / min.
  • the maximum value of the obtained bending stress be a bending rigidity value (cN / 50 mm).
  • part used as a measuring object is smaller than the said sampling dimension, it measures with a small scale test piece, and converts it by proportional calculation based on a dimension ratio.
  • the top sheet 30 has a property of transmitting liquid, and examples thereof include a porous or non-porous nonwoven fabric, a porous plastic sheet, and the like.
  • the nonwoven fabric is not particularly limited as to what the raw fiber is.
  • synthetic fibers such as olefins such as polyethylene and polypropylene, polyesters and polyamides, recycled fibers such as rayon and cupra, natural fibers such as cotton, and mixed fibers and composite fibers using two or more of them. Etc. can be illustrated.
  • the nonwoven fabric may be manufactured by any processing.
  • processing method examples include known methods such as a spun lace method, a spun bond method, a thermal bond method, a melt blown method, a needle punch method, an air through method, and a point bond method.
  • spunbond method and spunlace method are preferable.
  • bulkiness and softness are required, the air-through method, point bond method, and thermal bond method are preferable processing methods. .
  • the top sheet 30 may be composed of a single sheet or a laminated sheet obtained by bonding two or more sheets. Similarly, the top sheet 30 may be composed of one sheet or two or more sheets in the planar direction.
  • both side portions of the surface sheet 30 pass between the liquid-impermeable sheet 11 and the barrier cuffs 60 and 61 to the back side of the absorbent element 50 to prevent liquid penetration. Therefore, it is preferable to adhere to the liquid-impermeable sheet 11 and the barrier cuffs 60 and 61 with a hot melt adhesive or the like. Thereby, the effect that the rigidity of the both sides of the interior body 200 is improved is also obtained.
  • An intermediate sheet (also referred to as “second sheet”) 40 having a higher liquid permeation rate than the top sheet 30 can be provided to quickly transfer the liquid that has passed through the top sheet 30 to the absorber.
  • This intermediate sheet 40 not only improves the absorption performance of the absorbent by quickly transferring the liquid to the absorbent body, but also prevents the “reversed” phenomenon of the absorbed liquid from the absorbent body, so that the top sheet 30 is always dried. It can be made into the state which carried out.
  • the intermediate sheet 40 can be omitted. Examples of the intermediate sheet 40 include the same material as the top sheet 30, spunlace, spunbond, SMS, pulp nonwoven fabric, mixed sheet of pulp and rayon, point bond, or crepe paper.
  • an air-through nonwoven fabric is preferable because it is bulky. It is preferable to use a core-sheath composite fiber for the air-through nonwoven fabric.
  • the resin used for the core may be polypropylene (PP), but polyester (PET) having high rigidity is preferable.
  • Basis weight is preferably 20 ⁇ 80g / m 2, more preferably 25 ⁇ 60g / m 2.
  • the thickness of the raw fiber of the nonwoven fabric is preferably 2.2 to 10 dtex.
  • the intermediate sheet 40 in the illustrated form is disposed in the center shorter than the width of the absorber 56, but may be provided over the entire width.
  • the length of the intermediate sheet 40 in the longitudinal direction may be the same as the length of the absorbent body 56 or may be within a short length range centered on the region that receives the liquid.
  • a typical material of the intermediate sheet 40 is a nonwoven fabric having excellent liquid permeability.
  • the material of the liquid-impermeable sheet 11 is not particularly limited.
  • a film material waterproof film made of an olefin resin such as polyethylene or polypropylene, a laminated nonwoven fabric in which a nonwoven fabric is laminated on a polyethylene sheet,
  • Non-woven fabrics that are substantially liquid-impervious with a waterproof film interposed in this case, a liquid-impervious sheet is composed of the waterproof film and the non-woven fabric
  • materials having liquid impermeability and moisture permeability which have been used and used in recent years from the viewpoint of preventing stuffiness, can also be exemplified.
  • an inorganic filler is kneaded in an olefin resin such as polyethylene or polypropylene, and the sheet is formed, and then stretched in a uniaxial or biaxial direction.
  • an olefin resin such as polyethylene or polypropylene
  • the microporous sheet obtained in this way can be given.
  • a sheet that is liquid-impermeable without using a film can also be used as the liquid-impermeable sheet 11.
  • the liquid-impermeable sheet 11 is preferably extended around both sides of the absorbent element 50 to both sides of the side surface 30 of the absorbent element 50 in order to improve leakage prevention. Thereby, the effect that the rigidity of the both sides of the interior body 200 is improved is also obtained.
  • the width of this extended portion is suitably about 5 to 20 mm on the left and right.
  • the inner surface or the outer surface of the liquid-impermeable sheet 11 may be designed by printing or coloring. Further, a printed or colored design sheet, which is a separate member from the crotch outer sheet 12M, may be attached to the outside of the liquid-impermeable sheet 11. Further, an excretion indicator 80 whose color changes due to absorption of the liquid component can be provided inside the liquid-impermeable sheet 11.
  • barrier cuffs 60 and 61 are belt-like members extending along the both sides of the interior body 200 over the entire front-rear direction, blocking urine and soft stool that travel along the top sheet 30 in the lateral direction and prevent side leakage. It is provided to prevent this.
  • barrier cuffs 60 and 61 are provided twice on the left and right sides of the interior body 200.
  • the inner barrier cuff 61 stands obliquely from the side of the interior body 200 toward the center in the width direction
  • the outer barrier cuff 60 is in the width direction of the inner barrier cuff 61.
  • the outer side portion is provided so as to stand upright from the side of the interior body 200, the base side portion stands obliquely toward the center in the width direction, and the tip side portion from the intermediate portion stands obliquely outward in the width direction.
  • the inner barrier cuff 61 folds the belt-like barrier sheet 62 having a length equal to the length in the front-rear direction of the interior body 200 in the width direction and folds it into two. Between them, a plurality of elongated elastic elastic members 63 are fixed along the longitudinal direction at intervals in the width direction. The elongated elastic elastic member 63 is not fixed to the barrier sheet 62 at the front and rear ends, and is fixed so that the barrier cuff extends and contracts in the middle part.
  • the barrier sheet 62 is made of a spunbonded nonwoven fabric (SS, SSS, etc.), SMS nonwoven fabric (SMS, SSMMS, etc.), a melt-blown nonwoven fabric having excellent uniformity and concealment, and water repellent with silicon as necessary.
  • a treated product can be suitably used, and the fiber basis weight is preferably about 10 to 30 g / m 2 .
  • the elongated elastic elastic member 63 rubber thread or the like can be used.
  • the thickness is preferably 470 to 1240 dtex, more preferably 620 to 940 dtex.
  • the elongation at the time of fixation is preferably 150 to 350%, more preferably 200 to 300%.
  • a waterproof film can be interposed between the barrier sheets folded in two.
  • One or two elongated elastic expansion / contraction members 63 are preferably disposed at the distal end portion of the inner barrier cuff 61, and more preferably, one or two are disposed at an intermediate portion between the distal end portion and the proximal end portion.
  • the arrangement position of the elongated elastic elastic member 63 in the middle is preferably in the range of 30 to 70% of the height of the inner barrier cuff 61 (length in the width direction of the protruding portion).
  • the height of the inner barrier cuff 61 is preferably about 15 to 35 mm. Therefore, the arrangement range of the elongated elastic stretch member 63 is preferably 5 to 25 mm from the distal end to the proximal end, and is 12 to 18 mm. Is more preferable.
  • the arrangement interval 61d is preferably 2 to 10 mm, and more preferably 2 to 6 mm.
  • the end of the inner barrier cuff 61 opposite to the folded portion in the width direction is an attachment portion (inner attachment portion) 65 fixed to the back surface of the side edge of the interior body 200.
  • the portion is a protruding portion 66 (a portion on the folded portion side and corresponding to the inner protruding portion) protruding from the mounting portion 65, and both ends in the front-rear direction of the protruding portion 66 are hot melt adhesive on the surface of the surface sheet 30.
  • the outer barrier cuff 60 also has basically the same structure as the inner barrier cuff 61, but its attachment portion (outer attachment portion) 68 is an attachment portion 65 of the inner barrier cuff 61 on the back side of the interior body 200. Further, both ends in the front-rear direction of the projecting portion (outer projecting portion) 69 pass from the mounting portion 68 to the side of the interior body 200, and are fixed to the outer surface of the inner barrier cuff 61 on the center side in the width direction.
  • a base side portion that extends to the surfaces of both end portions in the front-rear direction of the inner projecting portion 66 and is fixed to the surfaces of both end portions in the front-rear direction of the inner projecting portion 66, and is folded back outward in the width direction from the tip of the base side portion.
  • the point differs from the front end side portion fixed to the base side portion, the arrangement and number of the elongated elastic elastic members 63, and the like.
  • the inner barrier cuff 61 also has a structure in which the tip of the inner protruding portion is folded outward in the width direction, specifically, not more than 1/2 of the height of the inner barrier cuff 61 (width direction length of the protruding portion), If it is preferably 1/3 or less, a structure in which the tip side portion is folded back in the width direction and fixed to the base portion side portion similarly to the outer barrier cuff 61 may be adopted.
  • the number of the elongated elastic elastic members 63 provided in the free part (outer free part) of the outer barrier cuff 60 is preferably 2-6, and more preferably 3-5.
  • the arrangement interval 60d is suitably 3 to 10 mm. If comprised in this way, in the range which has arrange
  • the elongated elastic elastic member 63 may be disposed not only at the distal end side but also at the base side.
  • the elongated elastic elastic member 63 disposed on the outer barrier cuff 60 has the same thickness and elongation rate as the inner barrier cuff 61, but the thickness is the same as or larger than that of the inner barrier cuff 61, and the elongation rate is the inner barrier cuff 61. The same or lower than that of 61 is preferred. Further, the front-rear direction length L6 of the front-rear fixing portion 67 of the protruding portions 66, 69 is preferably formed so that the inner barrier cuff 61 is the same as or shorter than the outer barrier cuff 60, and is elongated in the barrier cuffs 60, 61.
  • the length of the elastic stretch member 63 in the front-rear direction is preferably formed so that the inner barrier cuff 61 is the same as or longer than the outer barrier cuff 60.
  • the boundary between the attachment portion 65 and the protruding portion 66 may be the same position on the outer barrier cuff 60 and the inner barrier cuff 61, but the boundary of the outer barrier cuff 60 is the center in the width direction than the boundary of the inner barrier cuff 61. It is preferable to be spaced apart to the side, and the distance is preferably within 10 mm.
  • a linear root fixing part by hot melt adhesive or heat sealing at the edge part on the protruding parts 66, 69 side of the attaching parts 68, 65 of the outer barrier cuff 60 and the inner barrier cuff 61.
  • the other fixing parts can be fixed in an appropriate pattern using a hot melt adhesive or the like.
  • the linear root fixing portion is located in the vicinity of the side portion on the front surface side of the interior body 200 (specifically, the position from 0 to 5 mm in the width direction from the side edge, preferably 0 to 3 mm) or the back surface side. preferable.
  • the barrier cuff is folded and fixed to the surface side substantially only at both ends in the front-rear direction, in the crotch part where the restriction to the center in the width direction by the front-rear fixing part 67 does not sufficiently act.
  • the outer barrier cuff 60 and the inner barrier cuff 61 both stand up outward in the width direction, and the pocket formed by the inner barrier cuff 61 becomes wider.
  • the linear root fixing part is positioned over 5 mm in the width direction from the side edge on the surface side, the barrier cuff rises toward the center in the width direction also in the crotch part, and the pocket formed by the inner barrier cuff 61 is narrow Therefore, it is not preferable.
  • the fixing target of the attachment portions 68 and 65 of the outer and inner barrier cuffs 60 and 61 can be an appropriate member such as the top sheet 30, the liquid-impermeable sheet 11, and the absorbent element 50 in the interior body 200.
  • the other barrier cuff can be fixed to the interior body 200 via one barrier cuff.
  • the contraction force of the elongated elastic elastic member 63 acts so as to bring the both ends in the front-rear direction closer, but the both ends in the front-rear direction among the protruding parts 66 and 69 do not stand up. However, only the free part stands up against the body side as shown in FIG. 3.
  • the outer and inner barrier cuffs 60 and 61 stand up so as to open outward in the width direction at the crotch portion and the vicinity thereof.
  • the barrier cuffs 60, 61 come into contact with the legs around the surface, and the fit is improved.
  • the inner and rear barrier cuffs 61 are restricted by the front and rear fixing part 67 so that the outer and inner barrier cuffs 60 and 61 do not open outward in the width direction.
  • the lower half of the outer barrier cuff 60 is also erected in the same manner, it is possible to surely prevent the abdomen and the back from leaking from both sides of the interior body 200.
  • the front and rear fixing portions 67 of the protruding portion 66 of the inner barrier cuff 61 are not folded back, and the front and rear fixing portions 67 of the protruding portion 68 of the outer barrier cuff 60 are folded outward.
  • 61 is maintained between the inner and outer free parts, and the outer and inner barrier cuffs 60, 61 are securely raised at a wide interval, and each fits around the leg, providing excellent leakage prevention. It will be.
  • the standing height of the inner barrier cuff 61 (the length in the width direction of the protruding portion 66 in the unfolded state).
  • W5 is preferably 10 to 50 mm, particularly preferably 15 to 35 mm
  • the standing height of the outer barrier cuff 60 (length in the width direction of the protruding portion 69 in the unfolded state) W6 is 15 to 60 mm, particularly 20 to 40 mm. Is preferred.
  • the distance W4 between the tips when the inner barrier cuff 61 is tilted to the surface of the top sheet 30 is preferably 60 to 170 mm, particularly preferably 70 to 120 mm.
  • the separation distance W3 between the innermost folds is preferably 60 to 190 mm, particularly preferably 70 to 140 mm. Unlike the illustrated embodiment, only one of the outer and inner barrier cuffs 60 and 61 can be provided.
  • the absorbent element 50 includes an absorbent body 56 and a covering sheet 58 that wraps at least the back and side surfaces of the absorbent body 56.
  • the covering sheet 58 can be omitted.
  • the absorber 56 can be formed of an aggregate of fibers.
  • This fiber assembly a filament assembly obtained by opening, as necessary, synthetic fiber tows (fiber bundles) such as cellulose acetate as well as short fibers such as cotton-like pulp and synthetic fibers Can also be used.
  • the fiber basis weight can be, for example, about 100 to 300 g / m 2 when stacking cotton-like pulp or short fibers, and about 30 to 120 g / m 2 for filament aggregates, for example. Can do.
  • the fineness in the case of synthetic fibers is, for example, 1 to 16 dtex, preferably 1 to 10 dtex, and more preferably 1 to 5 dtex.
  • the filament may be a non-crimped fiber, but is preferably a crimped fiber.
  • the crimped degree of the crimped fiber can be, for example, about 5 to 75, preferably 10 to 50, and more preferably about 15 to 50 per inch. Further, a crimped fiber that is uniformly crimped is often used. It is preferable to disperse and hold superabsorbent polymer particles in the absorber 56.
  • the absorber 56 may be rectangular, but as shown in FIG. 6, the front end portion 56F, the rear end portion 56B, and a constricted portion having a narrower width than those of the front end portion 56F and the rear end portion 56B. It is preferable to form an hourglass shape having 56N because the fit of the absorber 56 itself and the barrier cuffs 60, 61 around the legs is improved. As specific dimensions, the length in the front-rear direction of the absorber front end portion 56F is L1, the length in the front-rear direction at the overlapping portion between the absorber 56 and the ventral exterior sheet 12F is L2, and the length of the front and rear ends of the absorber rear end portion 56B.
  • the length in the direction is L3
  • the length in the front-rear direction at the overlapping portion between the absorber 56 and the back exterior sheet 12B is L4
  • the minimum width of the constricted portion 56N is W1
  • the width of the absorber front end portion 56F and the rear of the absorber is W2
  • it is preferable that the end portion 56B is configured to satisfy the following expressions (1) to (4).
  • the degree of freedom of movement of the barrier cuff 60, 61 increases, and the barrier cuff 60, 61 Is easy to open outward in the width direction, and it is easy to hit the skin with the surface, and the followability of the fit surface to the movement of the leg is improved. Since the absorber 56 on the side of the interior body 200 exists in a sufficient range on both the front and rear sides, the standing of the barrier cuffs 60 and 61 is stabilized with this as a base point (fulcrum).
  • a portion extending from the front and rear sides to the crotch portion is a displacement portion in which the barrier cuffs 60 and 61 are opened outward from the posture in which the barrier cuffs 60 and 61 stand up inward in the width direction with reference to both side edges in the width direction.
  • the posture change of 60, 61 is supported by the absorber 56 that exists up to the side of the interior body 200, and the overall standing shape of the barrier cuffs 60, 61 is stabilized.
  • the degree of freedom of the barrier cuffs 60 and 61 becomes too high in the crotch part, and there is a possibility that a gap is easily formed around the leg, and both the front and rear sides of the crotch part
  • the standing of the barrier cuffs 60 and 61 may become unstable.
  • the constricted portion becomes too small, the degree of freedom of the barrier cuffs 60 and 61 is lowered, which is not preferable.
  • the longitudinal length L7 of the entire constricted portion 56N is preferably 80 mm or more, and particularly preferably 120 to 260 mm.
  • the degree of freedom of the barrier cuffs 60 and 61 is lowered, and the fit of the absorbent body 56 around the legs is lowered to prevent the movement of the legs, which is too long. And the standing of the barrier cuffs 60 and 61 becomes unstable.
  • Superabsorbent polymer particles include “powder” in addition to “particles”.
  • particle diameter of the superabsorbent polymer particles those used in this type of absorbent article can be used as they are, and those having a particle size of 1000 ⁇ m or less, particularly 150 to 400 ⁇ m are desirable.
  • the material of the superabsorbent polymer particles can be used without any particular limitation, but those having a water absorption of 40 g / g or more are suitable.
  • Superabsorbent polymer particles include starch, cellulose and synthetic polymers, such as starch-acrylic acid (salt) graft copolymer, saponified starch-acrylonitrile copolymer, and sodium carboxymethylcellulose cross-link. Or an acrylic acid (salt) polymer can be used.
  • starch-acrylic acid (salt) graft copolymer such as starch-acrylic acid (salt) graft copolymer, saponified starch-acrylonitrile copolymer, and sodium carboxymethylcellulose cross-link.
  • an acrylic acid (salt) polymer can be used.
  • shape of the superabsorbent polymer particles a commonly used granular material is suitable, but other shapes can also be used.
  • As the superabsorbent polymer one integrated with an antibacterial substance can be used.
  • antibacterial deodorant zeolite zeolite particles obtained by substituting some or all of the ion-exchangeable ions in the zeolite with silver ions (hereinafter referred to as antibacterial deodorant zeolite) are contained in the superabsorbent polymer or antibacterial.
  • Antibacterial deodorant superabsorbent polymer particles obtained by adhering deodorant zeolite particles to the surface of superabsorbent polymer particles by static electricity are suitable.
  • the superabsorbent polymer particles those having a water absorption rate of 40 seconds or less are preferably used. When the water absorption speed exceeds 40 seconds, so-called reversion in which the liquid supplied into the absorber 56 returns to the outside of the absorber 56 is likely to occur. Further, as the superabsorbent polymer particles, those having a gel strength of 1000 Pa or more are preferably used. Thereby, even if it is a case where it is set as the bulky absorber 56, the sticky feeling after liquid absorption can be suppressed effectively.
  • the basis weight of the superabsorbent polymer particles can be appropriately determined according to the amount of absorption required for the use of the absorber 56.
  • the superabsorbent polymer particles can adjust the spraying density or spraying amount in the plane direction of the absorber 56. For example, it is possible to increase the application amount of the liquid excretion site as compared to other sites. When gender differences are taken into account, men can increase the front spray density (amount), while women can increase the center spray density (amount). In addition, a portion where no polymer exists locally (for example, in a spot shape) in the planar direction of the absorber 56 can also be provided.
  • a paper material such as tissue paper or crepe paper, a nonwoven fabric, a polylaminated nonwoven fabric, a sheet having small holes, or the like can be used as the material.
  • the superabsorbent polymer particles be a sheet that does not escape.
  • a nonwoven fabric is used in place of the crepe paper, a hydrophilic SMMS (spunbond / meltblown / meltblown / spunbond) nonwoven fabric is particularly suitable, and polypropylene, polyethylene / polypropylene, etc. can be used as the material.
  • the basis weight is preferably 5 to 40 g / m 2 , particularly 10 to 30 g / m 2 .
  • the covering sheet 58 may cover only the back and side surfaces of the layer in addition to the form for covering the entire absorbent body 56.
  • the upper and side surfaces of the absorbent body 56 are covered with crepe paper or a nonwoven fabric
  • the lower surface is covered with a liquid-impermeable sheet such as polyethylene
  • the upper surface of the absorbent body 56 is covered with crepe paper or a nonwoven fabric.
  • the lower surface may be covered with a liquid-impermeable sheet such as polyethylene (each of these materials becomes a component of the covering sheet).
  • the absorbent body 56 may be sandwiched between upper and lower two-layer sheets or disposed only on the lower surface, but this is not a desirable form because it is difficult to prevent the movement of the superabsorbent polymer particles.
  • a crotch outer sheet 12M exposed on the outer surface of the product is provided on the back side of the inner body 200.
  • the material of the crotch outer sheet 12M the same material as the abdominal outer sheet 12F and the back outer sheet 12B can be used, but a material containing a higher-strength material or a deodorant, etc.
  • a material different from the exterior sheet 12F and the back-side exterior sheet 12B may be used.
  • various nonwoven fabrics such as spunbond nonwoven fabric, melt blown nonwoven fabric, point bond nonwoven fabric, air-through nonwoven fabric, air point nonwoven fabric, spunlace nonwoven fabric, SMS nonwoven fabric, and the like made of fibers of PP, PP / PE, PP / PET, or the like, or What added the deodorizer etc. to this can be used.
  • a high body pressure is applied to the crotch outer sheet 12M when sitting. Therefore, a material having a high friction fastness (not fuzzy) is preferable.
  • the crotch outer sheet 12M may be a sheet provided with design elements by printing or coloring. When used in combination with the above-described design sheet, it is preferable to dispose the designs so that they do not overlap.
  • a stretchable nonwoven fabric as the crotch outer sheet 12M and to extend and paste in the longitudinal direction of the inner body 200 because the fit of the crotch part is improved.
  • the crotch outer sheet 12M goes from the side in the width direction to the side of the body and is bonded and fixed to the outer surface of the barrier sheet 62 with a hot melt adhesive or the like, the rigidity of both sides of the inner body 200 is improved.
  • a sheet having a bending resistance measured by the Clark method (JISL1096 C method) and a sum of the MD direction and the CD direction of the sheet of 100 mm or more, preferably 150 mm or more may be used.
  • the crotch outer sheet 12M is sandwiched between the inner body 200 and the abdominal and dorsal exterior sheets 12F and 12B where the abdomen and dorsal exterior sheets 12F and 12B overlap the interior body 200.
  • the crotch outer sheet 12M is affixed to the back surface of the inner body 200 and the inner or outer surfaces of the abdominal and back-side outer sheets 12F and 12B with a hot melt adhesive or the like.
  • FIG. 11 to FIG. 13 show a pants-type disposable diaper of the second form.
  • the waistline middle portion U2 of the abdominal exterior sheet 12F and the waistline upper end U1 of the backside exterior sheet 12B are made of a single-layer sheet-like breathable material and are used to fix the elastic elastic member and the elastic stretch member.
  • the elastic elastic member 19 is also provided in the waistline middle portion U2 of the abdominal exterior sheet 12F, and the waistline upper end of the backside exterior sheet 12B is provided.
  • the elastic elastic member 15 is also provided in the portion U1.
  • the waistline middle portion U2 becomes a portion having a plurality of layers and the elastic elastic member 19 and the adhesive
  • the waistline upper end portion U1 becomes a portion not having the elastic elastic member 19 and the adhesive
  • the waistline intermediate portion U2 is a portion that does not have the elastic elastic member 15 and the adhesive
  • the waistline upper end portion U1 is a portion that has a plurality of layers and has the elastic elastic member 15 and the adhesive.
  • Each thin layer portion 23 is displaced in the vertical direction, and in the same vertical direction range as the thin layer portion 23 of the ventral side exterior sheet 12F, the back side exterior sheet 1 provided in the range.
  • the elastic stretch member 15 of B secures stretchability around the waist, and in the same vertical range as the thin layer portion 23 of the backside exterior sheet 12B, the elastic stretch member 19 of the abdominal exterior sheet 12F provided in the range Elasticity around the waist is secured. Accordingly, the flexibility and breathability are further improved, and the fit around the waist is not easily lowered, and the waist is hardly bumped.
  • ⁇ Third embodiment> Instead of folding one sheet-like breathable material 12 on both the waist side and the crotch side to form the entire exterior sheet 12F, 12B in a two-layer structure as in the first embodiment, FIG. 14 and FIG. 15, on the waist side, the sheet-like breathable material 12 that forms the outermost surface is folded back at the waist-side edge, and the waist-side end portions W of the respective exterior sheets 12F and 12B, etc.
  • the necessary part is configured in a two-layer structure, and on the crotch side, a separate sheet-like breathable material 12X is bonded to the inner surface side of the sheet-like breathable material 12 that forms the outermost surface, and each of the exterior sheets 12F, 12B It is also proposed to configure the necessary parts such as the waistline lower end U3 in a two-layer structure.
  • the edge of the sheet-like breathable material 12, 12X is exposed at the crotch side edge of each of the exterior sheets 12F, 12B, but is not exposed to other parts. That is, the edge of the sheet-like breathable material of each exterior sheet does not have to be exposed at the waist side edge where peeling and deterioration of the touch are particularly likely to occur.
  • a separate sheet-like breathable material is bonded to the inner surface side of the sheet-like breathable material 12 that forms the outermost surface, and the waist-side end portions W of the respective exterior sheets 12F and 12B.
  • the sheet-like breathable material 12 forming the outermost surface is folded back at the crotch side edge, and the lower end U3 of the waistline of each of the exterior sheets 12F and 12B It is also possible to configure a necessary part such as a two-layer structure.
  • a separate sheet-like breathable material is bonded to the inner surface side of the sheet-like breathable material 12 that forms the outermost surface, and the waist-side end portions of the respective exterior sheets 12F and 12B It is also possible to configure the necessary portions such as W and the waistline lower end portion U3 in a two-layer structure.
  • FIG. 16 and FIG. 17 instead of sandwiching and fixing the front end portion 201 and the rear end portion 202 of the interior body 200 between the waist side folded portion 21 and its outer surface side material as in the first embodiment, FIG. 16 and FIG. As shown in FIG. 17, the slits 27 and 27 along the width direction are formed in the center in the width direction of the respective exterior sheets 12F and 12B, and the front end portion 201 of the interior body 200 is passed through the slit 27 of the ventral exterior sheet 12F. Then, it is fixed to the outer surface of the abdominal exterior sheet 12F with a hot melt adhesive or the like, and the rear end portion 202 of the interior body 200 is passed through the slit 27 of the back exterior sheet 12B to hot melt bond to the outer surface of the back exterior sheet 12B.
  • the illustrated example is a modification of the first embodiment, it can be applied to the second and third embodiments, and particularly between the sheet-like breathable materials 12 of the exterior sheets 12F and 12B as in the third embodiment. It is suitable when it is difficult to pinch.
  • FIG. 15 the front end 201 and the rear end 202 of the interior body 200 are joined to the innermost surface of the abdominal exterior sheet 12F and the innermost surface of the back exterior sheet 12B, respectively, with a hot melt adhesive or the like.
  • a hot-melt adhesive or the like is proposed.
  • the edge of the interior body constituent material exposed to the front edge and the rear edge of the interior body 200 can be covered with the front and rear cover sheets and pressed against the exterior sheets 12F and 12B, The peeling of the interior body 200 from the exterior sheets 12F and 12B and the deterioration of the touch due to the front and rear ends of the interior body 200 can be prevented.
  • the fifth embodiment is particularly suitable when it is difficult to sandwich the interior body 200 between the sheet-like breathable materials 12 of the exterior sheets 12F and 12B as in the third embodiment.
  • the present invention can also be applied to the first and second embodiments.
  • the sixth embodiment relates to the improvement of the interior body 200.
  • the front and rear lengths of the liquid-impermeable sheet 11 and the covering sheet 58 are shorter than those of the first to fifth embodiments, and the front and rear end portions 201 of the interior body 200 are shown.
  • 202 does not have the liquid-impermeable sheet 11 and the covering sheet 58.
  • the liquid-impermeable sheet 11 and the covering sheet 58 are longer in the front-rear direction than the absorbent body 56 and extend to the front side and the rear side of the absorbent body 56.
  • the intermediate sheet 40 does not exist at the front and rear end portions 201 and 202 of the interior body 200 as in the first to fifth embodiments.
  • the topsheet 30 and the crotch outer sheet 12M extend to the front and rear ends 201 and 202 of the interior body 200, and the topsheet 30 and the crotch exterior sheet 12M are the front and rear ends 201 and 202 of the interior body 200.
  • an adhesive 31 such as a hot melt adhesive.
  • the crotch outer sheet 12M is preferably disposed over the entire length of the interior body 200, and the front and rear end portions 201 and 202 of the interior body 200 are preferably composed of only a nonwoven fabric. .
  • the “front and rear end portions of the interior body” means a portion including at least a part of the fixed portion with respect to the exterior sheets 12F and 12B, and for example, from the front edge and the rear edge of the interior body 200 to the crotch side, respectively.
  • the portion can be about 5 to 15 mm.
  • the front and rear end portions 201 and 202 (particularly the end edges) of the interior body 200 are thin and soft, and are excellent in air permeability. Therefore, as described above, the front and rear end portions 201 and 202 of the interior body 200 are covered with the waist-side folded portion 21, inserted into the outside of the exterior sheets 12 ⁇ / b> F and 12 ⁇ / b> B, or covered with the cover sheets 25 and 26.
  • the front and rear end portions 201 and 202 of the interior body 200 are thin and soft, the end portion of the interior body 200 is separated from the exterior sheets 12F and 12B when the entire interior body 200 is exposed on the inner surface side of the exterior sheets 12F and 12B. Even if it does, it does not give the wearer a sense of incongruity. Therefore, it is not necessary to extend the fixing portion of the interior body 200 to the exterior sheets 12F and 12B to the end edges (at the end portions) of the front and rear end portions 201 and 202 of the interior body 200 (not shown). Easy to manufacture.
  • the crotch side edge of the space between the front and rear end portions 201 and 202 of the interior body 200 with respect to the exterior sheets 12F and 12B is closer to the front and back of the interior body 200 than the front and rear edges of the liquid-impermeable sheet 11. It is preferable that it is positioned closer to the edge of the film because only the thin and soft part is separated.
  • the liquid-impermeable sheet (particularly the film material) 11 and the covering sheet (particularly the paper material) 58 exist at the front and rear end portions 201 and 202 of the interior body 200, the air permeability deteriorates and the front and rear The edge becomes stiff.
  • the absorbent body 56 is present at 201 and 202 at the front and rear ends of the interior body 200.
  • the covering sheet 58 is used. Can be extended to the front and rear ends 201 and 202 of the interior body 200. In this case, there is little decrease in air permeability, and the front and rear end portions of the interior body 200 are not easily hardened.
  • the elongated elastic elastic member 63 located on the outermost side in the width direction has a fixed length (the contraction force of the elongated elastic elastic member 63 acts).
  • the length of the portion in the front-rear direction (corresponding to the entire length of the member 63 in the drawing) is preferably longer than the length in the front-rear direction of the absorbent body 56, and the spaced-apart portions of the front-rear end portions 201, 202 of the interior body 200 with respect to the exterior sheets 12F, 12B It is particularly preferred that the fixation extends up to.
  • the interior surface of the interior body 200 is rounded and recessed to form a three-dimensional structure. It is preferable because it has a hull shape and improved fit. However, if the elongated elastic expansion / contraction member 63 located on the outermost side in the width direction is too strong among the elongated elastic expansion / contraction members 63, the inner body 200 is excessively curved, and conversely, the fitting property is impaired. It is preferable that the elongation rate at the time of fixation is lower than that of other elongated elastic elastic members arranged and fixed along the front-rear direction.
  • the barrier cuff 60 in the sixth embodiment is not a double structure inside and outside like the first to fifth embodiments, but only the same as the outer barrier cuff 60 in the first to fifth embodiments. However, it may be a single structure consisting of only the inner barrier cuff 61 in the first to fifth embodiments, or a double structure similar to the first to fifth embodiments. You can also. Moreover, in order to prevent the leakage from the side part of the interior body 200, a waterproof film can be included in the barrier cuffs 60, 61. In that case, the range in the front-rear direction similar to the liquid-impermeable sheet 11 is used. Can be arranged.
  • the sheet 11 wraps around both sides of the absorbent element 50 and extends to both sides of the side surface 30 of the absorbent element 50.
  • the seventh embodiment is the embodiment shown in FIGS. 29 to 34, and the parts not shown in these drawings are the same as the first embodiment, and can be understood by referring to the drawings of the first embodiment. .
  • the abdominal exterior sheet 12F and the back exterior sheet 12B are formed by folding a single sheet-like material 12 so as to have a two-layer structure as shown in FIGS. Is. Characteristically, in each of the exterior sheets 12F and 12B, the sheet-like material 12 is folded back from the outermost surface to the innermost surface with the waist side edge (the edge of the waist opening WO) as a fold line throughout the entire width direction.
  • the portion is formed as a waist-side folded portion 21 that covers the entire portion on the waist side from the intermediate position in the vertical direction on the innermost surface, and the sheet-like material 12 extends from the outermost surface to the innermost surface with the crotch side edge as a fold line throughout the entire width direction.
  • the folded portion is formed as a crotch side folded portion 22 that covers the entire crotch portion from the middle position in the up-down direction on the innermost surface. Therefore, the crotch side edge of the waist side folded part 21 and the waist side edge of the crotch side folded part 22 are aligned so that the waist side folded part 21 and the crotch side folded part 22 do not overlap each other ( Butt).
  • the lamination of the sheet-like material 12 at the waist side end portion of the side seal portion 12A As can be seen from the material lamination structure of the side seal portion 12A shown in FIG. 34 (b), the lamination of the sheet-like material 12 at the waist side end portion of the side seal portion 12A.
  • the number, the number of the sheet-like material 12 laminated at the crotch side end, and the number of the sheet-like material 12 laminated at the intermediate portion between the waist side end and the crotch side end are all the same four sheets. Yes. Therefore, the entire side seal portion 12A can be uniformly bonded with an appropriate bonding strength.
  • the number of laminated sheet-like materials 12 at the waist end is six, and the number of sheet-like materials 12 laminated at the crotch end is four. Uniform welding is difficult. Since others are the same as that of the first embodiment, the description will be omitted.
  • the eighth form is the form shown in FIG. 35, and is a form in which the same modification as the above-described second form is applied to the above-described seventh form.
  • the parts not shown in FIG. 35 can be understood by referring to the drawings of the second embodiment and the seventh embodiment.
  • the eighth embodiment as can be seen from the material laminate structure of the side seal portion 12A shown in FIG. 35 (b), the number of laminated sheet-like breathable materials 12 at the waist side end portion of the side seal portion 12A, The number of sheet-like breathable materials 12 laminated at the crotch side end is the same (four), and the number of sheets of breathable material 12 laminated at the intermediate portion between the waist side end and the crotch side end is Less than that (two).
  • the joint strength of the sheet-like air-permeable material 12 at the waist side end portion and the crotch side end portion in the side seal portion 12A is substantially equal and the side seal portion is formed only by forming the side seal evenly in the side seal portion 12A. It becomes easy to make it the strongest in each part of 12A.
  • the waist side end portion and crotch side end portion of the side seal portion are portions to which particularly strong force is applied during mounting and are portions to be a starting point or an end point of peeling, and an intermediate portion of the side seal portion 12A is a portion after use In peeling, smooth peeling is required (it is not preferable to be stronger than the starting point and the ending point).
  • the number of sheet-like breathable materials 12 laminated at the waist end is six, and the number of sheet-like breathable materials 12 laminated at the crotch end is four. Therefore, it is difficult to obtain the above effects. Since others are the same as that of the 2nd form and the 7th form, explanation is omitted dare.
  • the ninth form is a form shown in FIGS. 36 and 37, and is a form in which the same modification as the above-described third form is applied to the above-described seventh form. Moreover, since the modified content is the same as that of the above-mentioned 3rd form, it uses the same code
  • the 10th form is a form shown by FIG.38,39, and is a form which applied the deformation
  • the modified content is the same as that of the above-mentioned 4th form, it uses the same code
  • the illustrated example is a modification of the seventh embodiment, but can be applied to the eighth and ninth embodiments.
  • the sheet-like breathable material of the exterior sheets 12F and 12B is applicable. It is suitable when it is difficult to pinch between the two.
  • the 11th form is a form shown by FIG.42 and FIG.21, and is a form which applied the deformation
  • the modified content is the same as that of the above-mentioned 5th form, it uses the same code
  • the eleventh embodiment is particularly suitable when it is difficult to sandwich the interior body 200 between the sheet-like breathable materials 12 of the exterior sheets 12F and 12B as in the ninth embodiment. Applicable to form.
  • the twelfth form is a form shown in FIG. 42, and is a form in which the same modification as the sixth form is applied to the seventh to eleventh forms. Moreover, since the modified content is the same as that of the above-mentioned 6th form, it uses the same code
  • the thin sheet portions 23 are provided on both the exterior sheets 12F and 12B, respectively, but the thin layer portion 23 is provided only on one (for example, the back side) and not on the other. It is also possible. In such a configuration, when the thin layer portion 23 is provided only on the back side, the side seal portion 12A is pulled to the ventral side at least in the middle portion of the side seal portion. Is preferable because the lower end side of the side seal portion 12A is shifted to the back side during use and the bulge and the swell are less likely to occur in the buttock cover portion 14C.
  • FIG. 3 is a cross-sectional view taken along the line 3-3 in FIG. 1.
  • FIG. 4 is a sectional view taken along line 4-4 of FIG.
  • FIG. 5 is a sectional view taken along the line 5-5 in FIG.
  • It is a top view in the state where a diaper was developed showing only a principal part of a pants type disposable diaper of a 1st form with a size. It is sectional drawing which shows only the principal part of an underpants type disposable diaper with a dimension.
  • FIG. 6 is a sectional view taken along line 6-6 in FIG.
  • A The perspective view which shows roughly the diaper inner surface of the expansion
  • B It is sectional drawing which shows the material laminated structure of a side seal part.
  • FIG. 17 is a 7-7 cross-sectional view of FIG. 14. It is a top view in the state where the diaper was developed showing the inner surface of the pants type disposable diaper of the 4th form.
  • FIG. 8 is a sectional view taken along the line 8-8 in FIG. It is a top view in the state where the diaper was developed showing the diaper inner surface of the modification of the 1st form. It is a top view in the state where the diaper was developed showing the diaper outer surface of the modification of the 1st form. It is a top view in the state where the diaper was developed showing the underwear type disposable diaper inner surface of the 6th form.
  • FIG. 21 is a sectional view taken along the line 1-1 in FIG. 20.
  • FIG. 21 is a sectional view taken along the line 2-2 in FIG. 20.
  • FIG. 22 is a sectional view taken along line 9-9 of FIG. 21.
  • A It is a perspective view which shows roughly the diaper inner surface of the expansion
  • (b) It is sectional drawing which shows the material laminated structure of a side seal part. It is a photograph which shows a mounting state. It is a photograph which shows a mounting state. It is the schematic which shows the test procedure of a junction inclination test.
  • FIG. 30 is a sectional view taken along line 5-5 in FIG. 29. It is a front view of the product state of a 7th form. It is a rear view of the product state of a 7th form.
  • FIG. 7 is a sectional view taken along line 7-7 in FIG. 36. It is a top view in the state where the diaper was developed showing the inner surface of the pants type disposable diaper of the 10th form.
  • FIG. 39 is a cross-sectional view along 8-8 in FIG. 38. It is a top view in the state where the diaper was developed showing the diaper inner surface of the modification of the 7th form. It is a top view in the state where the diaper was developed showing the diaper outer surface of the modification of the 7th form. It is a top view in the state where the diaper was developed showing the underwear type disposable diaper inner surface of the 11th form.

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

Abstract

L'invention porte sur une couche jetable de type culotte, dans laquelle des sections d'étanchéité latérales permettant d'obtenir simultanément à la fois une résistance d'étanchéité et une facilité de séparation suffisantes. Dans la couche jetable de type culotte, une feuille extérieure de côté ventre (12F) et une feuille extérieure de côté arrière (12B) sont séparées l'une de l'autre sans être liées l'une à l'autre du côté entrejambe. Les feuilles extérieures (12F, 12B) comportent une partie arrière pliée de côté taille (21) et une partie arrière pliée de côté entrejambe (22). Le bord de côté entrejambe de la partie arrière pliée de côté taille (21) et le bord de côté taille de la partie arrière pliée de côté entrejambe (22) concordent l'un avec l'autre. Le nombre de plis dans la partie d'un matériau perméable à l'air de type feuille (12) qui se trouve au niveau de l'extrémité de côté taille et le nombre de plis dans la partie du matériau perméable à l'air de type feuille (12) qui se trouve au niveau de l'extrémité de côté entrejambe sont les mêmes. En outre, le nombre de plis dans la partie du matériau perméable à l'air de type feuille (12) qui se trouve au niveau d'une section intermédiaire entre l'extrémité de côté taille et l'extrémité de côté entrejambe est égal ou inférieur au nombre de plis dans les parties du matériau perméable à l'air de type feuille (12) qui se trouvent au niveau de l'extrémité de côté taille et de l'extrémité de côté entrejambe.
PCT/JP2008/073764 2007-12-28 2008-12-26 Couche jetable de type culotte WO2009084643A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200880122821.5A CN101909568B (zh) 2007-12-28 2008-12-26 短裤型一次性尿布
KR1020107016756A KR101478864B1 (ko) 2007-12-28 2008-12-26 팬츠형 일회용 기저귀

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007340937A JP4659020B2 (ja) 2007-12-28 2007-12-28 パンツ型使い捨ておむつ
JP2007340938A JP4494458B2 (ja) 2007-12-28 2007-12-28 パンツ型使い捨ておむつ
JP2007-340938 2007-12-28
JP2007-340937 2007-12-28

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WO2009084643A1 true WO2009084643A1 (fr) 2009-07-09

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CN (1) CN101909568B (fr)
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WO2011040045A1 (fr) * 2009-10-01 2011-04-07 Unicharm Corporation Couche jetable
RU2581581C1 (ru) * 2012-05-15 2016-04-20 Дзе Проктер Энд Гэмбл Компани Абсорбирующее изделие с характерной концевой частью поясного элемента
US9333122B2 (en) 2009-11-06 2016-05-10 Unicharm Corporation Disposable wearing article
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US9375359B2 (en) 2010-07-01 2016-06-28 Unicharm Corporation Pants-type absorbent wearing article with buttocks covering portion
CN105997360A (zh) * 2015-03-24 2016-10-12 大王制纸株式会社 短裤型一次性尿布
EP3449883A4 (fr) * 2016-06-06 2019-05-08 Unicharm Corporation Article absorbant
EP3544560A4 (fr) * 2016-11-23 2020-06-17 Essity Hygiene and Health Aktiebolag Article absorbant à bords pliés pour envelopper des éléments élastiques et procédé de fabrication d'un article absorbant à bords pliés
WO2021170027A1 (fr) * 2020-02-28 2021-09-02 The Procter & Gamble Company Article absorbant de type culotte et son procédé de fabrication
WO2021236700A1 (fr) * 2020-05-22 2021-11-25 The Procter & Gamble Company Articles absorbants munis de ceintures et de recouvrements de ceintures
CN115135292A (zh) * 2020-02-28 2022-09-30 宝洁公司 裤型吸收制品及其制造方法
US11576826B2 (en) 2016-06-09 2023-02-14 Daio Paper Corporation Underpants-type disposable diaper with cover nonwoven fabric having improved air permeability
US20230346611A1 (en) * 2015-05-12 2023-11-02 Fameccanica.Data S.P.A. Method for Manufacturing Absorbent Sanitary Products and an Absorbent Sanitary Product

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CN115135292A (zh) * 2020-02-28 2022-09-30 宝洁公司 裤型吸收制品及其制造方法
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CN115605168A (zh) * 2020-05-22 2023-01-13 宝洁公司（Us） 带有腰带和腰带覆盖件的吸收制品

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