[go: up one dir, main page]

WO2019026366A1 - Article portable jetable et son procédé de fabrication - Google Patents

Article portable jetable et son procédé de fabrication Download PDF

Info

Publication number
WO2019026366A1
WO2019026366A1 PCT/JP2018/017396 JP2018017396W WO2019026366A1 WO 2019026366 A1 WO2019026366 A1 WO 2019026366A1 JP 2018017396 W JP2018017396 W JP 2018017396W WO 2019026366 A1 WO2019026366 A1 WO 2019026366A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet layer
elastic film
region
sheet
elastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2018/017396
Other languages
English (en)
Japanese (ja)
Inventor
陽星 水元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daio Paper Corp
Original Assignee
Daio Paper Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Daio Paper Corp filed Critical Daio Paper Corp
Publication of WO2019026366A1 publication Critical patent/WO2019026366A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/344—Stretching or tensioning the joint area during joining
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies
    • A61F13/496—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape specially adapted to be worn around the waist, e.g. diapers, nappies in the form of pants or briefs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/56—Supporting or fastening means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B29C65/083—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil
    • B29C65/086—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations using a rotary sonotrode or a rotary anvil using a rotary anvil
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/433—Casing-in, i.e. enclosing an element between two sheets by an outlined seam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7294—Non woven mats, e.g. felt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B29C66/81429—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81433—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined being toothed, i.e. comprising several teeth or pins, or being patterned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8351—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws
    • B29C66/83511—Jaws mounted on rollers, cylinders, drums, bands, belts or chains; Flying jaws jaws mounted on rollers, cylinders or drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • B29C66/83415—Roller, cylinder or drum types the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/4871—Underwear
    • B29L2031/4878—Diapers, napkins

Definitions

  • the present invention relates to a disposable wearing article provided with an elastic film stretch structure in which an elastic film is sandwiched between sheet layers.
  • the elastic structure (hereinafter also referred to as elastic film elastic structure) in which the elastic film is sandwiched by sheet layers has an elastic film between a first sheet layer whose elastic region is made of nonwoven fabric etc. and a second sheet layer made of nonwoven fabric etc.
  • the first sheet layer and the second sheet layer are arranged at intervals in the expansion and contraction direction and the direction orthogonal thereto, respectively. And are bonded through a through hole formed in the elastic film or through the elastic film.
  • this elastic film stretch structure is linear only in the MD direction (machine direction) at the time of production and in the stretch direction, it can not exert a shrinking force in an oblique direction, for example, a direction along the base of the leg in a diaper. It was a thing.
  • the present applicant has proposed a stretch structure that exerts a shrinking force in the oblique direction by extending the elastic film in the oblique direction and attaching it between the first sheet layer and the second sheet layer (patent document 4).
  • a main object of the present invention is to provide a simple elastic film stretch structure having a plurality of non-parallel stretch directions.
  • an elastic film is laminated between the first sheet layer and the second sheet layer, and the plurality of bonding portions in which the first sheet layer and the second sheet layer are arranged at intervals, through holes passing through the elastic film.
  • an elastic film stretchable structure joined via the elastic film In the disposable wearing article, the region having the elastic film stretch structure has a stretch region that elastically stretches with the elastic film, The stretchable region has a single film portion that includes only one elastic film and does not have another elastic member, and the single film portion includes a first region that stretches in a first direction, and the first region with respect to the first region. A second region located in a direction orthogonal to the first direction, the second region extending and contracting in a second direction oblique to the first direction; Disposable wear article characterized in that.
  • the stretchable region of the present embodiment is located in a single film portion including only one elastic film, a first region that stretches in the first direction, and a direction orthogonal to the first direction with respect to the first region, relative to the first direction Since it has the second region that expands and contracts in the second direction that is diagonally oriented, it has a plurality of non-parallel expansion and contraction directions while having a simple structure that does not use a plurality of elastic members. Therefore, an expansion-contraction direction can be made to differ according to the site
  • a front and back separate or front and rear exterior body having a front body waist portion, a back body waist portion and an intermediate portion positioned therebetween; And an interior body attached to the exterior body, extending from the front to the back through the crotch.
  • a pants-type disposable wear in which both sides of the exterior body in the front body and both sides of the exterior body in the back body are respectively joined to form a side seal portion, and a waist opening and a pair of left and right legs are formed.
  • At least one of the exterior body of the front body and the exterior body of the rear body has the stretchable area at least on both sides in the width direction than the interior body, and the single film portion of the stretchable area is the middle part from the middle part It extends around the inside,
  • the second region includes a portion along the base of the leg of the wearer, and the expansion and contraction direction is obliquely downward toward the center in the width direction, and the first region is the portion It is located closer to the waist opening than the second region, and is provided so that the expansion and contraction direction is the width direction,
  • the disposable wearing article according to the first aspect.
  • a tape type disposable wear having a front body and a back body, and connection tapes extending from both sides of the back body, the connection tape having a connection portion detachably connected to the front body. It is an article,
  • the connection tape has the elastic region.
  • the single film portion of the stretchable region has the first region above the middle in the vertical direction of the connection tape and the second region below it.
  • the first area is provided so that the expansion and contraction direction is the width direction, and the second area is provided obliquely upward toward the leading end side of the connection tape.
  • connection tape In the tape type disposable wearing article which mounts by connecting to the front body the connection tape extended from the both sides of the back body, providing an elastic region in the connection tape is performed.
  • the lower side of the connecting tape is a leg opening, and expansion and contraction of the connecting tape enables deformation of the leg opening.
  • the connection tape if the second region that extends and contracts obliquely upward toward the leading end side of the connection tape as in this embodiment is provided below the middle in the vertical direction of the connection tape, the connection tape has a direction around the legs. Since it can be extended and contracted in the near direction, the fit around the legs is excellent. In addition, the fit in the circumferential direction is also ensured by the first region having stretchability in the width direction.
  • ⁇ Fourth aspect> In the manufacturing method of the disposable wearing article according to any one of the first to third aspects, In forming the elastic film stretch structure, Between the first sheet layer and the second sheet layer, in a state in which the elastic film is sandwiched and stretched in the first direction, the elastic film is penetrated or at many places spaced apart While joining the first sheet layer and the second sheet layer via an elastic film, Prior to bonding the first sheet layer and the second sheet layer, a slit or a hole having a dimension of 50 mm or more in the orthogonal direction is formed at the middle of the elastic film in the orthogonal direction orthogonal to the first direction.
  • a slit or a hole having a length of 50 mm or more in the orthogonal direction is only formed in the middle of the elastic film in the orthogonal direction. It is possible to produce a simple elastic film stretch structure having a plurality of non-parallel stretch directions. That is, when the elastic film in which the slits or the holes are formed is stretched in the first direction, the slits or the holes are contracted in the orthogonal direction while expanding in the first direction.
  • a portion of the continuous portion adjacent to the end of the slit or hole in the orthogonal direction is pulled toward the center of the slit or hole in the orthogonal direction, and the continuous portion is not affected by the tension in the first direction.
  • a portion extended in the second direction and a portion in which the extension direction is changed in the second direction toward the end of the slit or the hole in the orthogonal direction are formed by the influence of the tension. Therefore, in this state, after joining the first sheet layer and the second sheet layer, when the extension force is released, the portion elongated in the first direction at the time of joining becomes a first region which expands and contracts in the first direction.
  • a portion extended in two directions is a second region that expands and contracts in a second direction.
  • ⁇ Fifth aspect> In the manufacturing method of the disposable wearing article according to any one of the first to third aspects, In forming the elastic film stretch structure, Between the first sheet layer and the second sheet layer, in a state in which the elastic film is sandwiched and stretched in the first direction, the elastic film is penetrated or at many places spaced apart While joining the first sheet layer and the second sheet layer via an elastic film, Prior to bonding the first sheet layer and the second sheet layer, the elastic film has a length in the orthogonal direction at an interval in the first direction and both directions in the middle of the orthogonal direction.
  • a plurality of the slits or holes of 50 mm or more are arrayed, and a first continuous portion continuous in the first direction is left on both sides in the orthogonal direction with respect to the array region of the slits or holes; A second continuous portion continuous in the first direction is left in the orthogonally spaced portion of the slits or holes in the arrangement region, Bonding the first sheet layer and the second sheet layer in a state where the elastic film having the slits or the holes and the first continuous portion and the second continuous portion is stretched in the first direction,
  • the manufacturing method of the disposable wearing article characterized by the above-mentioned.
  • first continuous portion adjacent to the end of the slit or hole in the orthogonal direction is pulled toward the center of the slit or hole in the orthogonal direction, and the first continuous portion is affected by the tension.
  • a portion extending in the first direction and a portion in which the extension direction is changed in an oblique direction (second direction) toward the end in the orthogonal direction of the slit or the hole are formed due to the influence of tension.
  • second continuous portion a portion adjacent to the end of the slit or hole located on one side across the continuous portion and a portion adjacent to the end of the slit or hole located on the other side are separated from each other To be pulled in opposite directions in the orthogonal direction.
  • the portion between the end of the slit or hole located on one side across the second continuous portion and the end of the slit or hole located on the other side is the second continuous portion. It extends in an oblique direction (second direction) connecting the end of the slit or hole located on one side across the portion and the end of the slit or hole located on the other side. Therefore, in this state, after joining the first sheet layer and the second sheet layer, when the extension force is released, the portion elongated in the first direction at the time of joining becomes a first region which expands and contracts in the first direction. A portion extended in two directions is a second region that expands and contracts in a second direction.
  • the tensile force due to the deformation of the two slits or holes acts on the obliquely extending portion in the second continuous portion
  • the tensile force due to the deformation of one slit or the hole acts The inclination in the extension direction is deeper than in the diagonal extension part in the first continuous part.
  • a front and back separate or front and rear exterior body having a front body waist portion, a back body waist portion and an intermediate portion positioned therebetween; And an interior body attached to the exterior body, extending from the front to the back through the crotch.
  • a pants-type disposable wear in which both sides of the exterior body in the front body and both sides of the exterior body in the back body are respectively joined to form a side seal portion, and a waist opening and a pair of left and right legs are formed.
  • a method of manufacturing an article The elastic film is continuously supplied in the MD direction, and the first sheet layer and the second sheet layer are continuously supplied on the front and back sides respectively in the MD direction, and the elastic film is expanded in the MD direction In a state of being sandwiched between the first sheet layer and the second sheet layer, the elastic film is penetrated or through the elastic film at a number of places spaced apart, the first sheet layer and the second sheet layer
  • the disposable wearing article of the third aspect can be manufactured.
  • FIG. 1 is a cross-sectional view taken along the line CC in FIG. 1;
  • FIG. 2 is a cross-sectional view taken along line AA of FIG.
  • FIG. 2 is a cross-sectional view taken along the line BB in FIG.
  • (A) is a plan view of the main part of the stretchable area
  • (b) is a cross-sectional view taken along the line DD of (a)
  • (c) is a cross-sectional view in the mounted state
  • (d) is a cross-sectional view in the natural length state. It is a trace figure of the microscope picture from the (a) plane direction of the expansion-contraction area
  • (A) is a plan view of the main part of the stretchable area
  • (b) is a cross-sectional view taken along the line DD of (a)
  • (c) is a cross-sectional view in the mounted state
  • (d) is a cross-sectional view in the natural length state. It is a trace figure of the microscope picture from the (a) plane direction of the expansion-contraction area
  • FIG. 6 is a trace of a picture of the unstretched area of a sample. It is a principal part enlarged plan view of a non-stretching field. It is a top view which shows the example of various arrangement
  • (A) is a cross-sectional view taken along the line CC in FIG. 15, (b) is a cross-sectional view taken along the line EE in FIG. It is sectional drawing which shows roughly the principal part cross section of the exterior body expanded to a certain extent. It is sectional drawing which shows roughly the principal part cross section of the exterior body expanded to a certain extent.
  • (A) Trace figure of a top photograph of a sheet joined part formed in the 1st welding form (b) It is a trace figure of a top photograph of a sheet joined part formed in the 3rd welding form. It is the schematic of an ultrasonic sealing apparatus. It is a top view which shows the change of the elastic film at the time of manufacture.
  • FIG. 1 to 6 show a pants-type disposable diaper.
  • This pants-type disposable diaper (hereinafter, also simply referred to as a diaper) has an exterior body 20 forming a front body F and a back body B, and an interior body 10 fixed and integrated to the exterior body 20.
  • the inner body 10 is formed by interposing an absorber 13 between the liquid-permeable top sheet 11 and the liquid-impermeable sheet 12.
  • the inner body 10 and the outer body 20 are front body F and back body B Are folded at the center in the front-rear direction LD (longitudinal direction), which is the boundary between the two, and both sides thereof are joined to each other by heat welding or a hot melt adhesive, etc. It becomes a pants type disposable diaper in which a pair of leg openings were formed.
  • bonding means such as a hot melt adhesive
  • the inner body 10 has a structure in which an absorber 13 is interposed between a top sheet 11 and a liquid impermeable sheet 12 made of polyethylene or the like, as shown in FIGS. It absorbs and holds the excretory fluid that has passed through the sheet 11.
  • the planar shape of the inner body 10 is not particularly limited, but generally it is generally rectangular as shown in FIG.
  • a non-woven or non-porous non-woven fabric, a porous plastic sheet, or the like is suitably used as the top sheet 11 that covers the front side (skin side) of the absorbent body 13.
  • the material fibers constituting the non-woven fabric may be synthetic fibers of olefin type such as polyethylene or polypropylene, polyester type, polyamide type etc., regenerated fibers such as rayon or cupra, natural fibers such as cotton, etc.
  • Spunlace method Nonwoven fabrics obtained by an appropriate processing method such as a spun bond method, a thermal bond method, a meltblown method, a needle punch method or the like can be used.
  • the spunlace method is excellent in flexibility and drapability, and the thermal bonding method is excellent in bulk and softness.
  • urine etc. will be absorbed quickly, and it will be excellent in dry touch property.
  • the top sheet 11 extends around the side edge of the absorber 13 to the back side of the absorber 13.
  • a liquid impermeable plastic sheet such as polyethylene or polypropylene is used, but in recent years, it has moisture permeability from the viewpoint of prevention of peeling. Is preferably used.
  • This water-impervious and moisture-permeable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. is there.
  • the absorbent 13 is a known one, for example, a pile of pulp fibers, an aggregate of filaments such as cellulose acetate, or a non-woven fabric, and is formed by mixing and fixing a superabsorbent polymer as necessary. Can be used.
  • the absorbent body 13 can be packaged by a packaging sheet 14 having liquid permeability and liquid holding property, such as crepe paper, as necessary, for shape and polymer holding.
  • the shape of the absorber 13 is formed in a substantially hourglass shape having a narrow portion 13N at the crotch portion which is narrower than the front and rear sides.
  • the dimension of the constricted portion 13N can be appropriately determined, but the longitudinal length of the constricted portion 13N can be about 20 to 50% of the total length of the diaper, and the width of the narrowest part is 40% of the total width of the absorbent 13 It can be about 60%.
  • the absorber 13 is not included in the portion corresponding to the constricted portion 13N of the absorber 13 in the interior body 10.
  • An absorber side 17 is formed.
  • the liquid impermeable sheet 12 is folded back on the both sides in the width direction of the absorber 13 together with the top sheet 11.
  • this liquid impermeable sheet 12 it is desirable to use an opaque sheet so as not to have brown color such as defecation and urine.
  • a film formed by internally adding a pigment such as calcium carbonate, titanium oxide, zinc oxide, white carbon, clay, talc, barium sulfate or the like into a plastic and using it as a film is preferably used.
  • the three-dimensional gather 90 includes a fixing portion 91 fixed to the side of the back surface of the inner body 10, and the fixing portion 91 passing through the side of the inner body 10.
  • Each of these parts is formed of a gather sheet 95 formed by folding a sheet such as non-woven fabric into a double sheet.
  • the gather sheet 95 is attached over the entire front-rear direction of the inner body 10, the falling portions 93 are provided on the front and back sides of the non-absorbent side 17 and the free portions 94 are on both sides of the non-absorbent side 17 It is extended. Further, between the double gather sheets 95, an elongated gather elastic member 96 is disposed at a tip end portion of the free part or the like. The gather elastic member 96 is for raising the free portion 94 by an elastic contraction force as shown in FIG. 5 in the product state.
  • the solid gather 90 shown in FIGS. 5 and 6 has a configuration in which the main body 92 is not folded back, but the base side portion of the main body 92 is obliquely erected toward the center in the width direction, and the intermediate gathers Any known form can be adopted, such as a form in which the tip end side portion is obliquely erected outward in the width direction.
  • the gather elastic member 96 materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicone, polyester and the like which are usually used can be used. Further, in order to make it difficult to see from the outside, it is preferable that the thickness be 925 dtex or less, the tension be 150 to 350%, and the interval be 7.0 mm or less. As the gather elastic member 96, in addition to a thread as shown in the illustrated embodiment, a tape-like member having a certain width can also be used.
  • the material fibers constituting the above-mentioned gather sheet 95 are also synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters and polyamides, as well as synthetic fibers such as rayon and cupra, natural fibers such as cotton, etc.
  • non-woven fabrics obtained by an appropriate processing method such as a spun bond method, a thermal bond method, a meltblown method, a needle punch method or the like can be used as the fiber, in particular, the basis weight is It is preferable to use a non-woven fabric which is excellent in breathability by suppressing.
  • silicone type, paraffin metal type, alkylchromic chloride type water repellent, etc. in order to prevent permeation of urine and the like, to prevent run-out and to improve the feel (dry feeling) to the skin. It is desirable to use a water repellent treated non-woven fabric coated with.
  • the inner surface of the inner body 10 is joined to the inner surface of the outer body 20 by a hot melt adhesive or the like in the inner and outer fixing area 10B (hatched area).
  • the inside and outside fixed area 10B can be appropriately determined, and can be substantially the entire width direction WD of the inner body 10. However, it is preferable that both widthwise side portions are not fixed to the outer body 20.
  • the exterior body 20 extends laterally from the side edge of the absorber 13. As shown in the illustrated embodiment, the outer edge of the outer body 20 may be located at the center in the width direction of the inner edge of the inner body 10 in the crotch, as in the illustrated embodiment, or may be located at the outer side in the width direction. Further, the exterior body 20 is a range in the front-rear direction between the waist T, which is a range in the front-rear direction corresponding to the side seal portion 21, and the waist T of the front body F and the waist T of the rear body B. And an intermediate portion L.
  • FIG.2 and FIG.4-FIG. 6 shows, between the 1st sheet layer 20A and the 2nd sheet layer 20B.
  • the elastic film 30 is laminated, as shown in FIG. 7, the first sheet layer 20A and the second sheet layer 20B penetrate the elastic film 30 at a large number of sheet bonding portions 40 arranged at intervals. It has an elastic film stretchable structure 20X joined through the through hole 31.
  • the first sheet layer 20A and the second sheet layer 20B may be indirectly joined via the elastic film 30, not through the through holes 31 of the elastic film 30.
  • the planar shape of the exterior body 20 is formed by concave line around the leg 29 so that the widthwise side edges of the middle portion L respectively form a leg opening, and has a shape resembling an hourglass as a whole.
  • the exterior body 20 may be formed separately in the front body F and the back body B, and may be disposed so as to be separated in the front-rear direction LD at the crotch.
  • FIG.1 and FIG.2 is a form by which elastic film elastic structure 20X is extended to the waist end area 23, when elastic film elastic structure 20X is used for the waist end area 23, a waist end If necessary, as shown in FIGS. 15 and 16, the waist end area 23 is not provided with the elastic film stretch structure 20X, as in the case where the tightening of the area 23 becomes insufficient.
  • a telescopic structure by the member 24 can also be provided.
  • an elongated elastic member extending along the leg opening is not provided at an edge portion of the leg opening in the exterior body 20.
  • the waist elastic member 24 is an elongated elastic member such as a plurality of thread rubbers arranged at intervals in the front-rear direction LD, and gives an elastic force so as to tighten the circumference of the trunk of the body.
  • the waist elastic members 24 are preferably arranged three to eight, preferably at a distance of about 3 to 8 mm so as to form a predetermined expansion / contraction zone, instead of being arranged substantially in a bundle with a close spacing. Five or more are arranged.
  • the extension rate at the time of fixation of the waist portion elastic member 24 can be appropriately determined, it can be about 230 to 320% in the case of ordinary adults.
  • a rubber thread is used as the waist portion elastic member 24 in the illustrated example
  • another elongated elastic member such as a plain rubber may be used.
  • it may be a general-purpose form in which only an elongated elastic member such as thread rubber or plain rubber is provided without providing the elastic film expansion and contraction structure 20X in the exterior body 20.
  • the elastic film stretch structure 20X is not provided in the middle portion L between the waist T of the front body F and the waist T of the back body B, or the front body A telescopic structure 20X is continuously provided in the front-rear direction LD from the inside of the waist T of F to the middle of the waist T of the back body B through the middle portion L, or only one of the front body F and the back body B Appropriate modifications such as providing the elastic film stretchable structure 20X are also possible.
  • the shapes of the individual sheet bonding portions 40 and the through holes 31 in the natural length state can be appropriately determined, but the shape is circular (see FIGS. 7 and 8), elliptical, triangular, rectangular (see FIGS. 9 to 12). ), Polygons such as rhombus (see FIG. 13 (b)) or convex lens (see FIG. 13 (a)), concave lens (see FIG. 13 (c)), stars, clouds, etc. be able to.
  • the dimensions of individual sheet joints are not particularly limited, but the maximum length is preferably 0.5 to 3.0 mm, particularly preferably 0.7 to 1.1 mm, and the maximum width 40 x is 0.1 to 3.0 mm. In particular, in the case of a long shape in the orthogonal direction XD orthogonal to the expansion and contraction direction, it is preferable to set it to 0.1 to 1.1 mm.
  • each sheet bonding portion 40 may be appropriately determined, but if the size is too large, the hardness of the sheet bonding portion 40 has a large influence on the feel, and if it is too small, the bonding area is small and the materials are sufficiently adhered.
  • the area of each sheet bonding portion 40 is preferably about 0.14 to 3.5 mm 2 because it can not be done.
  • the area of the openings of the individual through holes 31 is preferably 1 to 1.5 times the area of the sheet joint, although the area of the openings of the individual through holes 31 may be equal to or larger than the sheet joint because the sheet joint is formed through the through holes 31. Is preferred.
  • the area of the opening of the through hole 31 is not the state of the elastic film 30 alone, but a value in the state of being integrated with the first sheet layer 20A and the second sheet layer 20B and in the state of natural length.
  • planar arrangement of the sheet bonding portion 40 and the through holes 31 can be determined as appropriate, a planar arrangement which is regularly repeated is preferable, and an oblique lattice shape as shown in FIG. 14 (a) or FIG. 14 (b) Hexagonal grid as shown (these are also referred to as zigzag), square grid as shown in FIG. 14 (c), rectangular grid as shown in FIG. 14 (d), as shown in FIG.
  • Parallel grid in the figure, two groups are provided so that a group of many parallel diagonal rows cross each other) or the like (they are inclined at an angle of less than 90 degrees with respect to the extension direction ED)
  • a group of sheet junctions 40 (the arrangement of group units may be regular or irregular, and may be pattern or character) may be regularly repeated It can also be done.
  • first sheet layer 20A and the second sheet layer 20B in the sheet bonding portion 40 are bonded through the through holes 31 formed in the elastic film 30, at least the first sheet layer 20A and the second sheet layer 20 in the sheet bonding portion 40. It is desirable that the first sheet layer 20A and the second sheet layer 20B are not joined to the elastic film 30 except between the sheet layers 20B.
  • the means for bonding the first sheet layer 20A and the second sheet layer 20B in the sheet bonding portion 40 is not particularly limited.
  • the first sheet layer 20A and the second sheet layer 20B in the sheet bonding portion 40 may be bonded by a hot melt adhesive or by bonding means such as heat sealing or ultrasonic sealing. .
  • the form in which the sheet bonding portion 40 is formed by material welding is the first form in the sheet bonding portion 40.
  • a first welding mode in which the first sheet layer 20A and the second sheet layer 20B are joined only by the molten solidified material 20m of at least one of the one sheet layer 20A and the second sheet layer 20B (FIG. 17 (a 17)
  • the second welding mode in which the first sheet layer 20A and the second sheet layer 20B are joined only by the whole or most or a part of the solidified portion 30m of the elastic film 30 in the sheet joining portion 40 see, and any of the third welding forms (see FIG.
  • the second and third welding forms are Masui.
  • the first sheet layer by 20 m of the solidified part of the first sheet layer 20 A and the second sheet layer 20 B and 30 m of the solidified part of all or most of the elastic film 30 in the sheet bonding portion 40. It is a form by which 20A and the 2nd sheet layer 20B are joined.
  • the elastic film 30 is reflected in white between the melted and solidified materials 20m of the fibers of the first sheet layer 20A or the second sheet layer 20B appearing in black.
  • the elastic film 30m of the elastic film of the elastic film of the first sheet layer 20A or the second sheet layer 20B is obtained. No solidified melt is observed (the white part is the boundary of 20 m of the solidified melt of fibers and the irregular reflection of 20 m of the solidified melt of fibers).
  • the first sheet layer 20A and the second sheet layer 20A with the molten solidified material 20m of at least one of the first sheet layer 20A and the second sheet layer 20B as an adhesive When joining the sheet layer 20B, it is preferable not to melt part of the first sheet layer 20A and the second sheet layer 20B because the sheet bonding portion 40 is not hardened.
  • the core of all the fibers of the sheet bonding portion 40 is that the first sheet layer 20A and the second sheet layer 20B are not partially melted.
  • the composite fiber not only the core but also the central part of the monocomponent fiber remains, but its surrounding part (including not only the sheath of the composite fiber but also the part on the surface side of the monocomponent fiber)
  • the fibers are not melted at all, but the remaining fibers are all melted or the core remains, but the surrounding portion includes a melted form.
  • the peel strength is high.
  • the first sheet layer 20A is formed under the condition that the melting point of at least one of the first sheet layer 20A and the second sheet layer 20B is higher than the melting point of the elastic film 30 and the heating temperature at the time of forming the sheet bonding portion 40.
  • the elastic film 30 is sandwiched between the second sheet layer 20B, and a portion to be the sheet bonding portion 40 is pressurized and heated, and only the elastic film 30 is melted.
  • the melting point of the elastic film 30 is preferably about 80 to 145 ° C.
  • the melting points of the first sheet layer 20A and the second sheet layer 20 B are about 85 to 190 ° C., particularly about 150 to 190 ° C.
  • the difference between the melting point of the first sheet layer 20A and the second sheet layer 20B and the melting point of the elastic film 30 is preferably about 60 to 90.degree.
  • the heating temperature is preferably about 100 to 150 ° C.
  • the melted and solidified material 30m of the elastic film 30 is a sheet bonding portion as shown in FIG. 40 may penetrate between the fibers all over the thickness direction of the first sheet layer 20A and the second sheet layer 20B in 40, but as shown in FIGS. 17 (b) and (c) and FIG.
  • the flexibility of the sheet bonding portion 40 is higher in the mode in which the fibers are penetrated between the fibers or in the mode in which the fibers of the first sheet layer 20A and the second sheet layer 20B hardly penetrate as shown in FIG. It becomes a thing.
  • FIG. 20 shows an example of an ultrasonic sealing device suitable for forming the second welding mode and the third welding mode.
  • this ultrasonic sealing device when forming the sheet bonding portion 40, the first sheet layer 20A, between the anvil roll 60 having the projections 60a formed in the pattern of the sheet bonding portion 40 on the outer surface, and the ultrasonic horn 61, The elastic film 30 and the second sheet layer 20B are fed.
  • the feed drive roll 63 and the nip roll 62 are set by making the feed transfer speed by the feed drive roll 63 and the nip roll 62 of the elastic film 30 on the upstream side slower than the transfer speeds of the anvil roll 60 and the ultrasonic horn 61 and thereafter.
  • an elastic force is applied in the MD direction (machine direction, flow direction) to stretch the elastic film 30 as a whole to a predetermined elongation rate.
  • the elongation rate of the elastic film 30 as a whole can be set by selecting the speed difference between the anvil roll 60 and the feed drive roll 63, and can be set to, for example, about 300% to 500%.
  • 62 is a nip roll.
  • the through hole 31 is formed is not necessarily clear, but it is considered that the portion of the elastic film 30 corresponding to the projection 60 a of the anvil roll 60 is melted and separated from the periphery to open the hole.
  • the part between the through-holes 31 adjacent to the expansion-contraction direction ED in the elastic film 30 is expanded-contracted by the through-hole 31, as shown to FIG. 7 (a), FIG. 9 (a) and FIG. Since it is cut from the parts on both sides of the direction and loses the support on both sides in the contraction direction, the expansion and contraction direction is closer to the center of the orthogonal direction XD orthogonal to the expansion and contraction direction ED as long as continuity in the direction orthogonal to the contraction direction is maintained.
  • the constituent materials of the first sheet layer 20A and the second sheet layer 20B can be used without particular limitation as long as they are sheet-like, but it is preferable to use a non-woven fabric from the viewpoint of air permeability and flexibility.
  • the non-woven fabric is not particularly limited as to its raw material fiber.
  • synthetic fibers such as olefins such as polyethylene and polypropylene, polyesters and polyamides, regenerated fibers such as rayon and cupra, natural fibers such as cotton, etc., mixed fibers of which two or more are used, composite fibers Etc.
  • the non-woven fabric may be produced by any processing.
  • the processing method examples include known methods such as spun lace method, spun bond method, thermal bond method, melt blown method, needle punch method, air through method, point bond method and the like.
  • the basis weight is preferably about 12 to 20 g / m 2 .
  • a part or all of the first sheet layer 20A and the second sheet layer 20B may be a pair of layers in which one sheet of material is folded back to be opposed.
  • the component positioned on the outside is the second sheet layer 20B, and a folded portion 20C formed by being folded back to the inner surface at the waist opening edge is the first sheet layer 20A.
  • the elastic film 30 is interposed between them, and in the other parts, the component positioned inside is the first sheet layer 20A, and the component positioned outside is the second sheet layer 20B, and the elastic film 30 is interposed therebetween. Can be intervened.
  • the constituent of the first sheet layer 20A and the constituent of the second sheet layer 20B are individually provided over the entire longitudinal direction LD, and the constituent of the first sheet layer 20A and the second sheet are not folded.
  • the elastic film 30 can also be interposed between the components of the layer 20B.
  • the elastic film 30 is not particularly limited, and as long as it is a thermoplastic resin film having elasticity by itself, in addition to non-porous ones, those in which a large number of holes and slits are formed for ventilation can also be used.
  • the tensile strength in the MD direction is 8 to 25 N / 35 mm
  • the tensile strength in the CD direction is 5 to 20 N / 35 mm
  • the tensile elongation in the MD direction is 450 to 1050%
  • the tensile elongation in the CD direction is 450 to 1400%
  • the elastic film 30 is The thickness of the elastic film 30 is not particularly limited, but is preferably about 20 to 40 ⁇ m.
  • region which has the elastic film expansion-contraction structure 20X in the exterior body 20 has an expansion-contraction expansion-contraction area
  • the elastic film 30 has a portion 32 which is linearly continuous along the stretch direction ED, and is contracted in the stretch direction ED by the contraction force of the elastic film 30, and in the stretch direction ED. It is extensible. More specifically, in a state in which elastic film 30 is expanded in expansion / contraction direction ED, the through holes of elastic film 30 are spaced at intervals in expansion / contraction direction ED and orthogonal direction XD (for example, width direction WD and longitudinal direction LD).
  • the first sheet layer 20A and the second sheet layer 20B are joined via 31 to form a large number of sheet bonding portions 40, thereby forming an elastic film stretch structure 20X, and in the stretch area 80, the elastic film 30 is substantially formed.
  • Such stretchability can be provided by arranging the through holes 31 so as to have a linearly continuous portion along the stretch direction ED.
  • the elastic region 80 bulges in the direction in which the first sheet layer 20A and the second sheet layer 20B between the sheet bonding portions 40 are separated from each other. Then, the contraction weir 25 extending in the orthogonal direction XD is formed, and as shown in FIG. 7C and FIG. It is supposed to be. Further, as in the illustrated embodiment, the first sheet layer 20A and the second sheet layer 20B are not joined to the elastic film 30 except at least between the first sheet layer 20A and the second sheet layer 20B in the sheet joining portion 40. 7 (c) and 9 (c) assuming the mounted state, and FIGS. 7 (a) and (b) and FIGS.
  • the elastic limit elongation in the expansion / contraction direction ED of the expansion / contraction area 80 be 200% or more (preferably 265 to 295%).
  • the elastic limit elongation of the stretchable region 80 is substantially determined by the stretch rate of the elastic film 30 at the time of manufacture, it is reduced by a factor that inhibits the contraction of the stretch direction ED based on this.
  • the main factor of such inhibition is the ratio of the length 40x of the sheet bonding portion 40 to the unit length in the expansion / contraction direction ED, and the elastic limit elongation decreases as the ratio increases.
  • the elastic limit elongation of the stretchable region 80 can be adjusted by the area ratio of the sheet bonding portion 40.
  • the extension stress of the stretchable region 80 can be adjusted mainly by the sum of the widths 32w of the portions 32 in which the elastic film 30 is linearly continuous along the stretch direction ED (for example, the width direction WD).
  • the width 32w of the portion 32 in which the elastic film 30 is linearly continuous along the expansion / contraction direction ED is a distance 31d in the orthogonal direction XD (for example, the longitudinal direction LD) of the through holes 31 in contact with both side edges of the continuous portion 32
  • the spacing 31d of the through holes 31 is equal to the length 31y of the through holes 31 in the orthogonal direction XD and the length 40y of the sheet bonding portion 40 in the orthogonal direction XD (the through holes 31 and the sheet bonding portion described above In the case where the simultaneous formation method of 40 is adopted, etc.)
  • the expansion stress of the stretchable area 80 can be adjusted by the ratio of the length 40 y of the sheet bonding portion 40 per unit length in the orthogonal direction XD, and in the normal case, the sheet bonding portion 40 Since the length 40 y of the sheet bonding portion 40 is correlated with the area ratio of the sheet bonding portion 40, the length of the sheet bonding portion 40 can be adjusted by the area ratio of the sheet bonding portion 40.
  • the extensional stress of the expansion and contraction region 80 can be set as a standard when it is extended to 50% of the elastic limit.
  • the area ratio of the sheet bonding portion 40 in the stretchable region 80 and the area of each sheet bonding portion 40 can be determined as appropriate, but in the normal case, it is preferable to be in the following range.
  • Area of sheet bonding portion 40 0.14 to 3.5 mm 2 (particularly, 0.14 to 1.0 mm 2 )
  • Area ratio of sheet bonding portion 40 1.8 to 19.1% (particularly, 1.8 to 10.6%)
  • the elastic limit elongation and the extension stress of the stretchable area 80 can be adjusted by the area of the sheet bonding portion 40, a plurality of areas in which the area ratio of the sheet bonding portion 40 in the stretchable area 80 is different as shown in FIG. Can be provided to change the fit according to the site.
  • the area 81 extending obliquely along the base of the leg in the front body F and the edge area 82 of the leg opening have a high area ratio of the sheet bonding portion 40 compared with the other areas. Therefore, the tensile stress is weak, and it is a region that can be flexibly expanded and contracted.
  • the iliac-facing region 83 in the back body B and the edge region 82 of the leg opening also have a high area ratio of the sheet bonding portion 40 compared to the other regions, and hence the region where the extension stress is weak and softly expands and contracts. It has become.
  • the area 84 at the middle of the width direction WD of the portion overlapping the interior body 10 in the front body F has a higher area ratio of the sheet bonding portion 40 compared to the other areas, and the elongation stress is further weak.
  • the elastic limit elongation is also a smaller area.
  • each stretchable area 80 of the front body F and the back body B has a single film portion 85 which includes only one elastic film 30 and does not include other elastic members.
  • the single film portion 85 covers the entire stretchable area 80, but may have a structure in which only a part of the stretchable area 80 has the elastic film 30 of one layer.
  • each single film portion 85 extends from inside the middle portion L to the inside of the waist portion T and is located on the waist opening side, and the first region 51 in which the expansion and contraction direction ED is the first direction D1 (width direction WD) And second regions 52 and 53 which are located in a direction orthogonal to the first direction D1 with respect to the first region 51 and extend / contract in (second directions D2 and D3) oblique to the first direction D1. doing.
  • each single film portion 85 of the example shown in FIG. 2 is adjacent to the first area 51 as a second area, and the expansion / contraction direction ED is the area 53 of the diagonal upward D3 toward the center in the width direction, And a region 52 including a portion along the base of the leg, in which the expansion / contraction direction ED is obliquely downward D2 toward the width direction center, and between these second regions 52, 53.
  • the second region is only the region 52 including the portion along the base of the leg in which the expansion / contraction direction ED is obliquely downward D2 toward the center in the width direction.
  • the single film portion 85 causes a contractile force to be developed obliquely downward D2 toward the center in the width direction in the portion along the base of the leg of the wearer, and the width at the waist opening side than that Since the part in which the contraction force is developed is provided in the direction WD, the fit to the base of the leg and the circumference of the trunk is improved.
  • the difference between the example shown in FIG. 2 and the example shown in FIG. 15 is the difference in manufacturing method described later.
  • the position of the first region 51 is not particularly limited, but preferably includes at least the end on the waist opening side in the single film portion 85 of the waist portion T in the front-rear direction LD, and the waist portion It is more preferable that the entire waist opening side is included from the center in the front-rear direction of T.
  • the first region 51 may be provided only in a part of the width direction WD, but it is preferable that the first region 51 extends over the entire width direction of the waist portion T.
  • the position of the second regions 52 and 53 can be appropriately determined as long as it includes the portion along the base of the leg of the wearer, but in the longitudinal direction LD, the leg opening side of the waist portion T of the single film portion 85 It is preferable to be provided in a portion from the end of the to the middle portion L. Further, in the width direction WD, it is preferable to be provided at least on both sides in the width direction than both side edges of the inner body 10, and can be provided over the entire width direction. A non-stretchable area 70 can also be provided.
  • the elastic film stretchable structure 20X of the example shown in FIG. 15 can be manufactured, for example, by the method shown in FIG. 20 and FIG. That is, as in the example shown in FIG. 20, in the manufacturing process of the package 20, the elastic film 30 is continuously supplied in the MD direction, and the first sheet layer 20A and the second sheet layer 20B are respectively provided on the front and back sides.
  • the elastic film 30 is By penetrating or bonding the first sheet layer 20A and the second sheet layer 20B via the elastic film 30, the portion to be the exterior body 20 of the front body F and the portion to be the exterior body 20 of the rear body B are integrated Form.
  • a single elastic film extends from at least a portion to be the waist T of the front body F to a portion to be the waist T of the back B as the elastic film 30.
  • the film 30 is supplied.
  • the crotch portion of each of the pants-type disposable diapers in the middle region of the elastic film 30 in the CD direction prior to bonding the first sheet layer 20A and the second sheet layer 20B, as shown in FIG. 21, the crotch portion of each of the pants-type disposable diapers in the middle region of the elastic film 30 in the CD direction.
  • the slit 35 having a size of 50 mm or more in the CD direction is sequentially formed in a portion including the portion where the continuous direction 36 continues in the MD direction on both sides of the slit 35 in the CD direction.
  • the first sheet layer 20A and the second sheet layer 20B are joined in a state in which the elastic film 30 having the slits 35 and the continuous portion 36 is stretched in the MD direction.
  • the slits 35 Prior to bonding the first sheet layer 20A and the second sheet layer 20B, the slits 35 having a length of 50 mm or more in the CD direction are formed in the middle of the CD direction of the elastic film 30.
  • the slit 35 expands in the MD direction and shrinks in the CD direction, as shown by a white arrow in FIG.
  • the part extended in the oblique direction at the time of joining includes a part along the base of the leg and in the width direction
  • the second regions 52 and 53 expand and contract in the diagonally downward direction toward the center of the WD, and from the area on the waist opening side, the portion expanded in the MD direction at the time of bonding is the MD direction (that is, the width direction WD in the example shown in FIG. 15)
  • the first region 51 expands and contracts in
  • the process of a well-known manufacturing method can be employ
  • the width direction WD of the disposable wearing article is in the MD direction
  • the individual disposable wearing articles are continuous in the MD direction in the unfolded state by assembling the inner body 10 separately manufactured in the manufacturing process of the inner body 10 with intervals in the MD direction while conveying so as to Form the interior assembly (attachment process of the interior body 10).
  • a portion 201 to be the exterior body 20 of the front body F and a portion 202 to be the exterior body 20 of the rear body B are Bonding to form the side seal portion 21 and cutting the portion to be the exterior body 20 of the front body F and the portion to be the exterior body 20 of the rear body B at the boundaries of the individual disposable wearing articles (side seal / separating process ), Individual pants-type disposable diapers can be manufactured.
  • the elastic film stretchable structure 20X of the example shown in FIG. 2 can be manufactured, for example, by the method shown in FIG. 20 and FIG. That is, prior to bonding the first sheet layer 20A and the second sheet layer 20B in the manufacturing process of the exterior body 20, as shown in FIG. 23, of the intermediate region in the CD direction in the elastic film 30, the front body Slits 35 with a size of 50 mm or more in the CD direction in the first part P1 that will be the side edges of F and the side edges of the back body B and the second part P2 that includes the part that will be the crotch of each pant type disposable diaper Form each.
  • a first continuous portion 36A continuous in the MD direction outside the first portion P1 in the CD direction is left, and a second continuous in the MD direction between the first portion P1 and the second portion in the CD direction Leave the continuous portion 36B. Then, the first sheet layer 20A and the second sheet layer 20B are joined in a state in which the elastic film 30 having the slits 35, the first continuous portion 36A and the second continuous portion 36B is stretched in the MD direction.
  • the elastic film 30 in which the slits 35 are formed in the first portion P1 and the second portion P2 and the first continuous portion 36A and the second continuous portion 36B are extended in the MD direction, as shown in FIG.
  • the slit 35 expands in the MD direction and shrinks in the CD direction. This point is the same as the example shown in FIG. 21 described above.
  • the slits 35 are alternately arranged at intervals in the MD direction and the CD direction, and the first continuous portion 36A and the second continuous portion 36B are left.
  • the portion of the first continuous portion 36A adjacent to the end of the slit 35 in the CD direction is the center side of the slit 35 in the CD direction.
  • the first continuous portion 36A is not affected by the tension and extends in the MD direction (first direction D1), and the tension causes the extension direction to be inclined toward the end of the slit 35 in the CD direction.
  • a portion changed in the direction (second direction D3) is formed.
  • the second continuous portion 36B a portion adjacent to the end of the slit 35 located on one side across the second continuous portion 36B and a portion adjacent to the end of the slit 35 located on the other side are It is pulled in the opposite direction in the CD direction so as to be separated from each other.
  • the portion between the end of the slit 35 located on one side across the second continuous portion 36B and the end of the slit 35 located on the other side is the second continuous portion It extends in an oblique direction (second direction D2) connecting the end of the slit 35 located on one side across the portion 36B and the end of the slit 35 located on the other side.
  • the inclination in the extension direction is deeper than that in the oblique extension in.
  • the longitudinal direction LD range corresponding to the slits 35 in the side edges of the body B is a weakly stretchable area 54 where the stretch force is very weak, and adjacent to the upper and lower sides of the weak stretchable area 54 respectively
  • the second regions 52 and 53 expand and contract in an oblique direction, and a portion of the second regions 52 and 53 adjacent to the waist opening and extended in the MD direction during bonding becomes the first region 51 that expands and contracts in the MD direction.
  • the second region 52 on the center side of the LD in the front-rear direction LD than the weakly stretchable region 54 includes a portion along the base of the leg, and the stretchable direction ED is obliquely downward toward the middle in the width direction WD.
  • the expansion and contraction direction ED is obliquely upward toward the center of the width direction WD.
  • the front-rear direction LD range corresponding to the slit 35 of the second portion P2 is cut to form a leg opening and hardly remains in the product, but if it remains, it becomes a weakly elastic region 54.
  • the steps of a known manufacturing method for example, the steps of the example shown in FIG. 24 or 25 can be employed.
  • the slit 35 means a cut which is hardly open with a natural length, but instead of the slit 35, the dimension in the MD direction is smaller than the dimension in the CD direction (for example, other than half)
  • a hole may be provided.
  • the dimension in the CD direction of the slit 35 or the hole can be appropriately determined as long as it is 50 mm or more, but in the normal case, it is preferably 50 to 400 mm, particularly 80 to 320 mm.
  • the slits 35 be located in the region of the elastic film 30 to be the middle portion L of each of the pants-type disposable diapers, the region to be the waist portion T of the front body F and the rear body B It may extend in the CD direction to at least one of the regions to be the waist T.
  • Non-stretchable area In the example shown in FIG. 2, the entire elastic film 30 stretchable structure 20X is used as the stretchable region 80 and there is no non-stretchable region, but in the region having the elastic film stretchable structure 20X, as shown in FIG. A stretchable area 70 can be provided. The arrangement of the stretchable region 80 and the non-stretchable region 70 can be determined as appropriate. In the case of the exterior body 20 of the underpants type disposable diaper as in the present embodiment, a portion overlapping with the absorber 13 is a region that does not require expansion and contraction, so a part or all of the portion overlapping with the absorber 13 as illustrated.
  • the non-stretchable area 70 it is desirable to include substantially the entire inside and outside fixed area 10B.
  • the non-stretchable region 70 can be provided from the region overlapping the absorber 13 to the region not overlapping the absorber 13 located in the width direction WD or the longitudinal direction LD, and the non-stretch region only in the region not overlapping the absorber 13 70 can also be provided.
  • the non-stretchable region 70 can be a region which does not have a linearly continuous portion along the extension direction at the time of manufacture due to the presence of the through holes 31. Accordingly, even if the entire elastic film elastic structure 20X including both of the elastic region 80 and the non-elastic region 70 is formed in the same manner as the elastic region 80, as shown in FIG. Since it does not continue linearly along the extension direction (width direction WD in the example of FIG. 11) at the time of manufacture, the contraction force of the elastic film 30 hardly acts on the first sheet layer 20A and the second sheet layer 20B. Elasticity almost disappears and elastic limit elongation approaches 100%.
  • the stretchable area 80 and the non-stretchable area 70 can be formed by the presence or absence of the portion where the elastic film 30 is not linearly continuous along the extension direction at the time of manufacture. Further, the continuity of the elastic film 30 remains even in the non-stretchable region 70, and as can be seen from FIG. 12, since the independent cut pieces of the elastic film 30 do not remain and no creases are formed, the appearance is extremely good.
  • the elastic limit elongation in the stretch direction ED may be 120% or less, preferably 110% or less, and particularly preferably 100%.
  • the arrangement pattern of the through holes 31 in the elastic film 30 in the non-stretchable region 70 can be appropriately determined, but as shown in FIG. 11, they are staggered and the center spacing 31e in the orthogonal direction XD of the through holes 31 is the through hole 31. If the pattern is shorter than the length 31y in the orthogonal direction XD, the continuity of the elastic film 30 can be almost completely eliminated while maintaining the continuity of the elastic film 30, and the appearance is also preferable as shown in FIG. Become. In this case, it is more preferable that the center interval 31 f of the through hole 31 in the expansion and contraction direction ED be shorter than the length 31 x of the through hole 31 in the expansion and contraction direction ED.
  • the non-stretchable region 70 is stretched to the elastic limit in the expansion / contraction direction ED.
  • the center spacing 31e in the orthogonal direction XD of the through hole 31 is 0.4 to 2.7 mm, and the length 31 y in the orthogonal direction X of the through hole 31 is 0.5 to 3.0 mm, in particular 0.7 to 1.1 mm It is preferable that The center spacing 31f of the through holes 31 in the expansion / contraction direction ED is preferably 0.5 to 2 times, particularly 1 to 1.2 times the length 31y of the through holes 31 in the orthogonal direction XD. It is preferable that the length 31x of the expansion / contraction direction ED is 1.1 to 1.8 times, particularly 1.1 to 1.4 times the center interval 31f of the through holes 31 in the expansion / contraction direction ED.
  • the center of the through hole 31 in the stretch direction ED In the state in which the non-stretchable region 70 is stretched to the elastic limit in the stretch direction ED (in other words, the state in which the first sheet layer 20A and the second sheet layer 20B are completely developed), the center of the through hole 31 in the stretch direction ED.
  • the spacing 31f is equal to the center spacing 40f in the expansion / contraction direction ED of the sheet bonding portion 40
  • the center spacing 31e in the orthogonal direction XD of the through hole 31 is equal to the center spacing 40e in the orthogonal direction XD of the sheet bonding portion 40.
  • the length 31y of the direction XD is equal to the length 40y of the orthogonal direction XD of the sheet bonding portion 40.
  • the elastic film 30 is not joined to the first sheet layer 20A and the second sheet layer 20B except between the first sheet layer 20A and the second sheet layer 20B in the sheet bonding portion 40,
  • the peripheral edge of the through hole 31 of the elastic film 30 and the sheet bonding portion 40 are separated at both sides in the expansion / contraction direction ED of the sheet bonding portion 40 in the state of natural length, Even if the material is a non-porous film or sheet, this gap is preferable because air permeability is always added.
  • the above-described simultaneous formation method of the through hole 31 and the sheet bonding portion 40 is adopted, this state is naturally obtained regardless of the shape of the sheet bonding portion 40 or the like.
  • the shapes of the individual sheet bonding portions 40 and the through holes 31 in the natural length state are not particularly limited, but it is desirable from the viewpoint of flexibility that the area be small, and linear continuity in the width direction WD of the elastic film 30 is eliminated.
  • the elastic film 30 is easily broken if the corner is an acute angle like a rhombus.
  • the convex lens shape is preferable because the welding of the sheet bonding portion 40 is stabilized, and the concave lens shape is preferable in that the area can be further reduced.
  • the area ratio of the sheet bonding portion 40 and the area of the individual sheet bonding portions 40 in the non-stretchable region can be appropriately determined, in the normal case, the area of each sheet bonding portion 40 is small and the sheets Since the non-stretchable area
  • Area of sheet bonding portion 40 0.10 to 0.75 mm 2 (particularly, 0.10 to 0.35 mm 2 )
  • Area ratio of the sheet bonding portion 40 4 to 13% (particularly, 5 to 10%)
  • the elastic limit elongation of the non-stretchable region 70 can be changed according to the arrangement pattern of the through holes 31 and the size and center distance of the individual through holes 31. Therefore, although not shown, they may be made different between a plurality of locations in the stretchable region 80 or a plurality of non-stretchable regions 70. For example, it is one preferable embodiment to make the elastic limit elongation in the non-stretchable area 70 of the front body F larger than the elastic limit stretch in the non-stretchable area 70 of the rear body B.
  • the non-stretchable region 70 has a linearly continuous portion along the stretch direction ED as in the stretch region, the elastic limit elongation is extremely low because the area ratio of the sheet bonding portion is higher than that of the stretch region. It is also possible to adopt a form that kills other stretchability such as a form that is 130% or less, a form that cuts in one place or multiple places in the stretch direction ED like a stretch structure using a conventional thread rubber it can.
  • the above-described stretchable structure 20X is not limited to pants-type disposable diapers, but it is possible to use tape-type disposable diapers around the waist and connecting tapes, solid gathers generally used for absorbent articles in general, flat gathers, etc. It can apply also to a manufacturing method.
  • the positions of the first direction, the second direction, the positions of the first region and the second region, and the positions of the slits or holes can be appropriately determined in consideration of fit and the like.
  • the tape-type disposable diaper has the connecting tape 100 extending from both sides of the back body B, and the connecting tape 100 is connected to the front body F in a detachable manner. It is what you have.
  • an elastic region 80 having a single film portion 85 is provided at the middle in the width direction of the back body B, and the elastic direction ED has a width above the middle in the vertical direction in the single film portion 85
  • a first area 51 in the direction WD can be provided, and a second area 52 can be provided below the first area 51 in which the expansion / contraction direction ED is obliquely upward toward both sides in the width direction WD.
  • an expansion / contraction area 80 having a single film portion 85 is provided on the connection tape 100, and a first area 51 in which the expansion / contraction direction ED is the width direction WD is provided above the middle in the vertical direction of the connection tape 100.
  • a second area 52 may be provided in which the expansion / contraction direction ED is obliquely upward toward the leading end side of the connection tape 100. Since the lower side of the connection tape 100 is a leg opening, and expansion and contraction of the connection tape 100 enables deformation of the leg opening, the connection tape 100 is connected by providing the first region 51 and the second region 52 as in the latter case. Since the tape 100 can be expanded and contracted in the direction closer to the direction around the leg, the fit around the leg is excellent.
  • first region 51 having stretchability in the width direction WD also ensures fit in the circumferential direction. It is also preferable that the connecting tape 100 is vertically dividable (or cut in advance) by perforations 102 along the boundary between the first area and the second area as in the illustrated example.
  • Front body and back body mean front and rear portions of the pants-type disposable diaper, respectively, bordering on the front-rear direction center.
  • the crotch refers to a range in the front-rear direction including the center in the front-rear direction of the pants-type disposable diaper, and when the absorber has a constricted portion, it refers to the longitudinal range of the portion having the constricted portion.
  • the MD direction of the non-woven fabric is the direction of fiber orientation of the non-woven fabric.
  • the fiber orientation is the direction along which the fibers of the non-woven fabric are aligned.
  • Elastic limit elongation means elongation at the elastic limit (in other words, the state in which the first sheet layer and the second sheet layer are fully developed) in the expansion / contraction direction ED, and the length at the elastic limit is a natural length Is expressed as a percentage based on 100%.
  • the “area ratio” means the ratio of the target portion to the unit area, and the target portion (for example, the sheet bonding portion 40) in the target region (for example, the stretchable region 80, the non-stretchable region 70, the main stretchable portion, and the buffer stretchable portion)
  • the total area of the opening of the through hole 31 and the vent hole is divided by the area of the target area and expressed as a percentage, and in particular, the "area ratio" in the area having the expansion and contraction structure is up to the elastic limit in the expansion and contraction direction ED. It means the area ratio in the stretched state.
  • “Stretch rate” means the value when natural length is 100%.
  • ⁇ "Age” is measured as follows. After the sample or test piece is predried, it is left in a test room or apparatus under standard conditions (test place: temperature 23 ⁇ 1 ° C., relative humidity 50 ⁇ 2%) to be in a constant weight state. Pre-drying refers to bringing a sample or test piece to a constant weight in an environment at a temperature of 100 ° C. In addition, it is not necessary to perform preliminary drying about the fiber whose official moisture percentage is 0.0%. From a test piece in a constant weight state, using a template for sampling (100 mm ⁇ 100 mm), cut out a sample of 100 mm ⁇ 100 mm in size.
  • the weight of the sample is measured, multiplied by 100, the weight per square meter is calculated, and taken as the basis weight.
  • the “thickness” of the absorber is the thickness measuring instrument of Ozaki Manufacturing Co., Ltd. (Pecock, Dial Thickness Gauge Large Type, Model J-B (measurement range 0 to 35 mm) or Model K-4 (measurement range 0 to 50 mm)) Measure with the sample and thickness gauge horizontal. - other than the above "thickness” is used automatic thickness measuring instrument (KES-G5 Handy Compression measurement program), load: 0.098 N / cm 2, and the pressure area: automatically measured under the conditions of 2 cm 2.
  • ⁇ “Tensile strength” and “Tensile elongation (breaking elongation)” conform to JIS K 7127: 1999 “Plastic-Test method of tensile characteristics-” except that the test piece is made into a rectangular shape of 35 mm wide ⁇ 80 mm long. It means that the initial chuck distance (marked line distance) is 50 mm and the tensile speed is 300 mm / min.
  • ⁇ “Tensile stress” is a tensile test based on JIS K 7127: 1999 “Plastic-Test method for tensile properties-” with an initial chuck spacing (distance between marked lines) of 50 mm and a tensile speed of 300 mm / min.
  • N / 35 mm the tensile stress measured when stretching in the elastic region
  • the degree of stretching can be appropriately determined depending on the test object.
  • it is preferable to make a test piece into a rectangular shape with a width of 35 mm and a length of 80 mm or more when a test piece with a width of 35 mm can not be cut out, a test piece is made with a width that can be cut out and the measured value is 35 mm wide The value converted to
  • at least comparison can be made as long as test pieces of the same size are used even if the small test pieces are appropriately compared if the magnitude of the extension stress is compared. .
  • “Expanded state” means a flat state without contraction or slack. -Unless otherwise indicated, the dimension of each part means the dimension in the unfolded state, not the natural length state. ⁇ If there is no description about the environmental conditions in the test or measurement, the test or measurement shall be performed in the test room or equipment under the standard condition (test place: temperature 23 ⁇ 1 ° C, relative humidity 50 ⁇ 2%) Do.
  • the present invention is applicable to general disposable wear articles provided with an elastic region such as various types of disposable diapers such as tape type and pad type, sanitary napkins, etc. other than the pants type disposable diaper as described above.
  • SYMBOLS 10 Interior body, 10B ... Inside-and-outside fixed area
  • region 11 ... Top sheet, 12 ... Liquid-impervious sheet, 13 ... Absorbent body, 13N ... Bump part, 14 ... Packaging sheet, 17 ... Non-absorber side part, 20 ...
  • Exterior body 20A first sheet layer, 20B: second sheet layer, 20C: folded portion, 20X: elastic film stretch structure, 21: side seal portion, 23: waist end area, 24: waist elastic member, 25: shrinkage ⁇ , 29: leg around line, 30: elastic film, 31: through hole, 40: sheet joint, 70: non-stretching area, 80: stretching area, 90: solid gather, 93: lying part, 94: free part, 95: Gathered sheet, 96: Gathered elastic member, B: Rear body, ED: Stretching direction, XD: Orthogonal direction, F: Front body, L: Intermediate part, LD: Front and back direction, T: Waist part, WD: Width direction, 5: single film portion 51: first region 52, 53 second region 54: weakly stretchable region D1 first direction D2, D3 second direction 35: slit 36: continuous portion P1 ... 1st part, P2 ... 2nd part, 36A ... 1st continuation part, 36B ... 2nd continuation part, 100

Landscapes

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

Abstract

La présente invention concerne le problème de la fourniture d'une structure d'étirement simple formée de films élastiques présentant une pluralité de directions d'étirement non parallèles. Le problème est résolu par un article portable jetable pourvu d'une structure d'étirement formée de films élastiques (20X) dans laquelle des films élastiques (30) sont stratifiés entre une première couche de voile (20A) et une seconde couche de voile (20B), et la première couche de voile et la seconde couche de voile sont reliées par de nombreuses parties de liaison disposées de manière non jointive. Une région comportant la structure d'étirement formée de films élastiques comprend une région étirable (80) qui s'étire élastiquement conjointement avec les films élastiques, et la région étirable comporte une partie à film unique (85) qui comprend uniquement une couche du film élastique et ne comprend pas d'autres éléments élastiques. La partie à film unique comporte une première région (51) s'étirant dans une première direction (D1) et des secondes régions (52, 53) disposées, par rapport à la première région, dans une direction perpendiculaire à la première direction et s'étirant dans des secondes directions (D2, D3) qui sont obliques par rapport à la première direction.
PCT/JP2018/017396 2017-08-03 2018-05-01 Article portable jetable et son procédé de fabrication Ceased WO2019026366A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017150530A JP6360950B1 (ja) 2017-08-03 2017-08-03 使い捨て着用物品及びその製造方法
JP2017-150530 2017-08-03

Publications (1)

Publication Number Publication Date
WO2019026366A1 true WO2019026366A1 (fr) 2019-02-07

Family

ID=62904932

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/017396 Ceased WO2019026366A1 (fr) 2017-08-03 2018-05-01 Article portable jetable et son procédé de fabrication

Country Status (2)

Country Link
JP (1) JP6360950B1 (fr)
WO (1) WO2019026366A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112021002199A2 (pt) * 2018-08-06 2021-05-04 Essity Hygiene And Health Aktiebolag conjunto de artigos e método para produzir
JP6800277B2 (ja) * 2019-05-20 2020-12-16 ユニ・チャーム株式会社 パンツ型使い捨ておむつ、及び、パンツ型使い捨ておむつの製造方法
JP2020073097A (ja) * 2020-02-06 2020-05-14 ユニ・チャーム株式会社 着用物品

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10510199A (ja) * 1995-05-12 1998-10-06 ザ、プロクター、エンド、ギャンブル、カンパニー 多方向伸長性サイドパネルを有する使い捨てプルオン式吸収性物品
JP2004532758A (ja) * 2001-06-21 2004-10-28 ザ プロクター アンド ギャンブル カンパニー 弾性のある積層ウェブ
JP2008260131A (ja) * 2007-04-10 2008-10-30 Zuiko Corp 積層伸縮シートの製造方法
JP2014520589A (ja) * 2011-06-30 2014-08-25 エスセーアー・ハイジーン・プロダクツ・アーベー 弾性積層体を形成する方法
JP2016185266A (ja) * 2015-03-27 2016-10-27 大王製紙株式会社 パンツタイプ使い捨ておむつ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10510199A (ja) * 1995-05-12 1998-10-06 ザ、プロクター、エンド、ギャンブル、カンパニー 多方向伸長性サイドパネルを有する使い捨てプルオン式吸収性物品
JP2004532758A (ja) * 2001-06-21 2004-10-28 ザ プロクター アンド ギャンブル カンパニー 弾性のある積層ウェブ
JP2008260131A (ja) * 2007-04-10 2008-10-30 Zuiko Corp 積層伸縮シートの製造方法
JP2014520589A (ja) * 2011-06-30 2014-08-25 エスセーアー・ハイジーン・プロダクツ・アーベー 弾性積層体を形成する方法
JP2016185266A (ja) * 2015-03-27 2016-10-27 大王製紙株式会社 パンツタイプ使い捨ておむつ

Also Published As

Publication number Publication date
JP6360950B1 (ja) 2018-07-18
JP2019025225A (ja) 2019-02-21

Similar Documents

Publication Publication Date Title
JP6240733B1 (ja) 使い捨て着用物品及びその製造方法
JP6193429B1 (ja) 弾性フィルム伸縮構造の形成方法及び吸収性物品
JP6049228B1 (ja) 吸収性物品
JP6723087B2 (ja) 使い捨て着用物品
JP6331199B2 (ja) 吸収性物品
JP6546237B2 (ja) 伸縮部材及びこの伸縮部材を有する使い捨て着用物品
JP2017225508A5 (fr)
JP2016193199A5 (fr)
WO2019065575A1 (fr) Élément étirable et article jetable destiné à être porté comportant un élément étirable
JP2017064225A5 (fr)
JP6396549B1 (ja) 使い捨て着用物品
WO2019026366A1 (fr) Article portable jetable et son procédé de fabrication
WO2019064667A1 (fr) Article vestimentaire jetable
JP6370965B1 (ja) パンツタイプ使い捨ておむつ
JP6137712B2 (ja) パンツタイプ使い捨ておむつ
WO2016121977A1 (fr) Couche jetable de type culotte
WO2019065572A1 (fr) Élément élastique et article vestimentaire jetable utilisant cet élément élastique
JP6514744B2 (ja) 吸収性物品及びその製造方法
JP6681866B2 (ja) 伸縮部材及びこの伸縮部材を有するパンツタイプ使い捨て着用物品
WO2019065573A1 (fr) Élément élastique et article vestimentaire jetable utilisant cet élément élastique
JP6492152B1 (ja) 伸縮部材及びこの伸縮部材を有する使い捨て着用物品
JP6546251B2 (ja) 伸縮部材及びこの伸縮部材を有する使い捨て着用物品、並びに伸縮部材の製造方法
JP6546310B1 (ja) 伸縮部材及びこの伸縮部材を有する使い捨て着用物品
JP5980399B1 (ja) パンツタイプ使い捨ておむつ
WO2019065574A1 (fr) Élément élastique, article vestimentaire jetable utilisant cet élément élastique, et procédé de production d'élément élastique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18840144

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18840144

Country of ref document: EP

Kind code of ref document: A1