WO2014208635A1 - Couche jetable type culotte - Google Patents

Couche jetable type culotte Download PDF

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Publication number
WO2014208635A1
WO2014208635A1 PCT/JP2014/066920 JP2014066920W WO2014208635A1 WO 2014208635 A1 WO2014208635 A1 WO 2014208635A1 JP 2014066920 W JP2014066920 W JP 2014066920W WO 2014208635 A1 WO2014208635 A1 WO 2014208635A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaper
elastic member
side seal
type disposable
pants
Prior art date
Application number
PCT/JP2014/066920
Other languages
English (en)
Japanese (ja)
Inventor
佑馬 中尾
奥田　泰之
京子 石橋
Original Assignee
花王株式会社
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 花王株式会社 filed Critical 花王株式会社
Priority to BR212015026837-0U priority Critical patent/BR212015026837Y1/pt
Priority to CN201490000607.3U priority patent/CN205094804U/zh
Priority to KR2020157000043U priority patent/KR200489039Y1/ko
Priority to RU2015147699U priority patent/RU169501U1/ru
Publication of WO2014208635A1 publication Critical patent/WO2014208635A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
    • A61F13/4963—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs characterized by the seam
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/49007—Form-fitting, self-adjusting disposable diapers
    • A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
    • A61F13/49011—Form-fitting, self-adjusting disposable diapers with elastic means the elastic means is located at the waist region
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1648—Laser beams characterised by the way of heating the interface radiating the edges of the parts to be joined
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1654—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined
    • B29C65/1661—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning repeatedly, e.g. quasi-simultaneous laser 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
    • 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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1696—Laser beams making use of masks
    • 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
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/747—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means
    • B29C65/7473—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using other than mechanical means using radiation, e.g. laser, for simultaneously welding and severing
    • 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
    • B29C66/40—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
    • B29C66/431—Joining the articles to themselves
    • 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
    • B29C66/71—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 composition of the plastics material of the parts to be joined
    • 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
    • B29C66/723—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 being multi-layered
    • 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
    • B29C66/72941—Non woven mats, e.g. felt coated
    • 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
    • B29C66/83431—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
    • B29C66/83433—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts the contact angle between said rollers, cylinders or drums and said bands or belts being a non-zero angle
    • 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
    • B29C66/83431—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts
    • B29C66/83435—Roller, cylinder or drum types; Band or belt types; Ball types rollers, cylinders or drums cooperating with bands or belts said rollers, cylinders or drums being hollow
    • 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
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/137—Beaded-edge joints or bead seals
    • 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 pants-type disposable diaper.
  • a crotch part C ′ including an absorbent body, an abdominal side part A ′ and a back extending from the crotch part C ′ to the abdomen side and back side of the wearer, respectively.
  • One having an opening is widely used.
  • the ventral side portion A ′ and the back side portion B ′ have a plurality of elastic members 180 extending along the lateral direction of the diaper and spaced apart in the longitudinal direction of the diaper in the waist area. ing. The end of each elastic member 180 is generally located at the side seal portion S ′.
  • the side seal part S ′ is torn and opened from its end part.
  • the end portion of the elastic member 180 is positioned on the side seal portion S ′, the sheet of nonwoven fabric or the like constituting the ventral side portion A ′ and the back side portion B ′ can be torn, but the elastic member 180. May be stretched in a state where the elastic member 180 ′ of the ventral side portion A ′ and the elastic member 180 ′ of the back side portion B ′ are connected without being torn.
  • Such connection of the elastic member 180 ' becomes an obstacle when the diaper is removed and discarded.
  • Patent Document 1 As a conventional technique for improving the operation of tearing the side seal portion, for example, the one described in Patent Document 1 is known.
  • an elastic member non-installation region is provided in the vicinity of the side seal portion, which is a fixing portion between the ventral side edges and the back side edges of the exterior sheet, around the leg opening in the pants-type disposable diaper.
  • Patent Document 2 proposes that the side seal portion of the pants-type disposable diaper does not have both end portions of the waistline elastic member, and the side seal portion is made non-stretchable. It is described in the same literature that the diaper can be smoothly torn at the side seal portion by adopting this configuration.
  • the side seal portion may not be successfully peeled off.
  • the crotch part, the abdominal side part and the back side part extending from the front and back of the crotch part, both side edges of the abdomen side part, and both side edges of the back side part are joined.
  • the pants-type disposable diaper has a longitudinal direction corresponding to the wearer's front-rear direction and a lateral direction perpendicular thereto.
  • the said side seal part has a junction part extended continuously along the vertical direction of the said diaper.
  • a plurality of elastic members extending in the lateral direction of the diaper are arranged on both the abdominal side and the back side in a stretched state at intervals in the longitudinal direction of the diaper.
  • the end portion of the elastic member that is located closer to the side seal portion does not reach the position of the side seal portion, and the side seal portion Further, it terminates at a position inwardly in the lateral direction, thereby forming an elastic member non-arrangement region between the side seal portion and the end portion of the elastic member.
  • an adhesive is intermittently applied along the longitudinal direction of the diaper at a position on an extended line extending in the lateral direction from the position where the elastic member is disposed. The end of the elastic member is fixed by the agent.
  • FIG. 1 is a perspective view showing a wearing state of an embodiment of a pants-type disposable diaper of the present invention.
  • FIG. 2 is a developed plan view of the expanded pants-type disposable diaper shown in FIG. 1 as viewed from the top sheet side.
  • FIG. 3 is a side view showing a state where the diaper shown in FIG. 1 is mounted.
  • FIG. 4 is a side view showing a state where the side seal portion is peeled off from the mounted state shown in FIG.
  • FIG. 5 is a perspective view showing an apparatus suitably used for forming the side seal portion of the diaper shown in FIG. 6 (a) to 6 (c) are explanatory views for explaining how the side seal portion is formed at the same time when the diaper continuous body is divided using the apparatus shown in FIG.
  • FIG. 1 is a perspective view showing a wearing state of an embodiment of a pants-type disposable diaper of the present invention.
  • FIG. 2 is a developed plan view of the expanded pants-type disposable diaper shown in FIG. 1 as viewed from the top sheet side.
  • FIG. 7 is a view (a view corresponding to FIG. 6 (c)) showing another example of a method for manufacturing a pants-type disposable diaper using the apparatus shown in FIG. 5.
  • FIG. 8 is a diagram schematically showing a cross section of the diaper shown in FIG. 1 in the lateral direction.
  • FIG. 9 is a schematic view showing a sheet suitably used as the outer package of the diaper shown in FIG.
  • FIG. 10 is a side view which shows the state which peels off the side seal part of the conventional pants type disposable diaper.
  • This invention relates to providing the underpants type disposable diaper which can eliminate the fault which the prior art mentioned above has.
  • FIG. 1 shows an embodiment of a pants-type disposable diaper of the present invention.
  • the diaper 1 shown to the figure has the vertical direction X corresponded to a wearer's front-back direction, and the horizontal direction Y orthogonal to this.
  • the diaper 1 includes an absorbent main body 5 having a top sheet 2, a back sheet 3, and an absorbent body 4 interposed between both sheets, and an exterior body 6 disposed on the back sheet 3 side of the absorbent main body 5. ing.
  • the diaper 1 has the crotch part C and the abdominal part A and the back part B which are extended in the front-back direction of a wearer from the front and back of the crotch part C.
  • the diaper 1 is formed symmetrically with respect to a longitudinal center line CL extending along the longitudinal direction X.
  • the outer casing 6 of the diaper 1 extends over the entire outer side of the absorbent main body 5 as shown in FIG.
  • the exterior body 6 has a shape in which each side edge extending along the vertical direction X is bound inward in the horizontal direction Y in the central region of the vertical direction X.
  • the side seal portion S is formed by joining the inner surfaces of the side edges 6a, 6a of the ventral side A of the exterior body 6 and the inner surfaces of the side edges 6b, 6b of the back side B in the shape of a palm.
  • the diaper 1 having a waist opening WO and a pair of leg openings LO, LO is formed as shown in FIG.
  • the side seal portion S extends along the longitudinal direction X of the diaper 1.
  • the side seal portion S includes a joint portion (a portion represented by reference numeral 40 in FIG. 6C described later) formed by joining the exterior body 6, and the joint portion extends along the longitudinal direction X of the diaper 1. It extends continuously in a straight line.
  • the absorbent main body 5 is arranged and fixed on the inner surface side of the outer package 6.
  • the absorptive main body 5 is formed in the rectangular shape long in the vertical direction X, as shown in FIG.
  • the absorbent body 4 included in the absorbent main body 5 is also formed in a rectangular shape that is long in the longitudinal direction X.
  • the absorbent main body 5 has an area on the one end 5a side in the vertical direction X fixed to the stomach side A in the exterior body 6 with an adhesive, and an area on the other end 5b side in the vertical direction X
  • the outer body 6 is fixed to the back side portion B via an adhesive.
  • the top sheet 2, the back sheet 3, the absorbent body 4, and the exterior body 6, those similar to those conventionally used for this type of absorbent article can be used without particular limitation.
  • a nonwoven fabric having hydrophilicity, a perforated resin film having hydrophilicity, or the like can be used as the surface sheet 2.
  • a resin film, a laminated body of non-woven fabric having water repellency, or the like can be used as the back sheet 3.
  • the absorbent body 4 a laminated product of flap pulp, a mixed product of flap pulp and a superabsorbent polymer, an absorbent sheet in which a superabsorbent polymer is held on a pulp sheet, or the like can be used.
  • a water-repellent nonwoven fabric can be used as will be described later, the outer package 6 may be configured by laminating a plurality of nonwoven fabrics.
  • the vertical direction X corresponds to the direction along the long side of the absorbent main body 5 which is the diaper 1 or its constituent member, that is, the longitudinal direction
  • the horizontal direction Y is the absorption of the diaper 1 or its constituent member. This corresponds to the width direction of the sex main body 5.
  • a plurality of elastic members 80 a, 80 b extending in the lateral direction Y of the diaper 1 are arranged in the exterior body 6 in a stretched state at intervals in the longitudinal direction X of the diaper 1. Yes. Specifically, as shown in FIG. 2, the exterior body 6 is positioned between the outer layer sheet 61 forming the outer surface of the diaper 1, the inner layer sheet 62 disposed on the inner surface side of the outer layer sheet 61, and both sheets 61, 62. And a plurality of elastic members 80a and 80b in a state of extending along the width direction Y. The elastic members 80a and 80b are disposed in the waist area and the waist area of the diaper 1.
  • leg elastic member 90 is arranged in an extended state along the curved portion of the central region in the vertical direction X among the side edges extending along the vertical direction X in the exterior body 6.
  • the leg elastic member 90 is also sandwiched and fixed between the outer layer sheet 61 and the inner layer sheet 62.
  • the outer layer sheet 61 in the diaper 1 has a length extending in the longitudinal direction X further than a region where the plurality of thread-like elastic members 80a and 80b are sandwiched and fixed by the outer layer sheet 61 and the inner layer sheet 62.
  • the extension region 61L (see FIG. 2) extending from the inner layer sheet 62 in the outer layer sheet 61 is folded back toward the absorbent main body 5 and covers the ends 5a and 5b in the longitudinal direction X of the absorbent main body 5. Yes.
  • the folded extension region 61L is bonded to the inner layer sheet 62 by, for example, an adhesive (not shown).
  • FIG. 3 shows a side view of the diaper 1 in a worn state.
  • a plurality of abdominal elastic members 80a extending in the lateral direction Y of the diaper 1 are arranged in an extended state at intervals in the longitudinal direction X of the diaper 1.
  • a plurality of back-side elastic members 80b extending in the lateral direction Y of the diaper 1 are also provided in the back side portion B in an extended state at intervals in the vertical direction X of the diaper 1.
  • the ventral elastic member 80a two adjacent spaces are spaced at equal intervals in the vertical direction X.
  • two adjacent intervals with an interval in the vertical direction X are equally spaced.
  • the spacing between the elastic members may be the same or different.
  • the arrangement position of the abdominal elastic member 80a and the arrangement position of the back elastic member 80b substantially coincide with each other.
  • substantially coincides means that the arrangement position of the abdominal elastic member 80a (or the dorsal elastic member 80b) and the arrangement position of the dorsal elastic member 80b (or the abdominal elastic member 80a) closest thereto. It means that the distance in the vertical direction X is 2 mm or less.
  • the abdominal elastic member 80a and the back elastic member 80b are not arranged in a region where the exterior body 6 overlaps the absorbent main body 5 when the diaper 1 is viewed in a plan view shown in FIG. Accordingly, the abdominal elastic member 80a and the back elastic member 80b extend from one side seal part S to the other side seal part S for those located closer to the waist opening WO. On the other hand, about what exists in the position away from the waist opening WO, it extends only from the side seal part S to the side edge part of the absorptive main body 5.
  • the abdominal elastic member 80a and the back elastic member 80b include those having two types of extending regions.
  • the positions of the end portions of the ventral elastic member 80a and the back elastic member 80b located near the side seal portion S the positions of the end portions of the ventral elastic member 80a near the side seal portion S as shown in FIG. And the position of the edge part near the side seal part S of the back side elastic member 80b differs. Specifically, the position of the end portion of the ventral elastic member 80a near the side seal portion S coincides with the position of the side seal portion S. On the other hand, the end portion of the back side elastic member 80b located near the side seal portion S does not reach the position of the side seal portion S, and is located closer to the inner side in the lateral direction Y than the side seal portion S. It ends with.
  • the elastic member non-arrangement region 9b is formed between the side seal part S and the end part of the back side elastic member 80b.
  • the elastic member non-arrangement region is not formed in the ventral portion A.
  • the elastic member non-arrangement region 9b is formed over the entire region in the longitudinal direction X of the diaper 1.
  • the effect of the present invention is that the end portions of one or several dorsal elastic members 80b are inevitably positioned in the side seal portion S due to fluctuations in the manufacturing conditions of the diaper 1. Allowed as long as it is not impaired.
  • the belly side elastic member 80a and the back side elastic member 80b are disposed between the outer layer sheet 61 and the inner layer sheet 62. Of the directions, only the both end portions are fixed to at least one of the outer layer sheet 61 and the inner layer sheet 62.
  • the belly side elastic member 80a and the back side elastic member 80b may be in an unfixed state in both the outer layer sheet 61 and the inner layer sheet 62 at the portion between both ends, or the outer layer sheet 61 and the inner layer sheet 62. It may be fixed to any one of the above.
  • An adhesive such as a hot melt adhesive is used for fixing the elastic members 80a and 80b to the sheets 61 and 62 at the end portions. Therefore, in the ventral side A in the vicinity of the side seal portion S, the adhesive 10a is intermittently provided along the longitudinal direction X of the diaper 1 at the position where the ventral elastic member 80a is disposed as shown in FIG. The end of the ventral elastic member 80a is fixed by the adhesive 10a. On the other hand, in the back side portion B in the vicinity of the side seal portion S, from the position where the back side elastic member 80b is arranged in the elastic member non-arrangement region 9b and the inner region in the lateral direction Y than that described above. The adhesive 10b is intermittently applied along the longitudinal direction X of the diaper 1 at a position on the extended line extending in the lateral direction Y, and the end of the back elastic member 80b is fixed by the adhesive 10b. Yes.
  • the side seal portion S is moved in the vertical direction X.
  • the inner layer sheets 62 constituting the side seal part S are separated from each other, or the sheet is destroyed along the side seal part S. It can prevent effectively remaining in the seal part S.
  • the side seal portion S is likely to be peeled off preferentially.
  • the connection body of the elastic members 80a and 80b hardly remains in the side seal portion S.
  • the bonding strength of the side seal portion S is higher than the tensile strength of the sheet, the material destruction of the sheet is likely to occur preferentially at a position adjacent to the side seal portion S, and adhesion at that position Since the amount of the agent is small, uniform material destruction of the sheet is likely to occur along the side seal portion S, and the connection body of the elastic members 80a and 80b is difficult to remain in the side seal portion S.
  • the width of the elastic member non-arrangement region 9b may be more than 0 mm, for example, preferably 0.01 mm or more, and 0.1 mm or more. Is more preferable. Moreover, it is preferable that it is 3 mm or less, and it is still more preferable that it is 2 mm or less.
  • the width of the elastic member non-arrangement region 9b is preferably more than 0 mm and not more than 3 mm, more preferably not less than 0.01 mm and not more than 3 mm, and still more preferably not less than 0.1 mm and not more than 2 mm. The width is measured by cutting the side seal portion S from the diaper 1 and observing the side seal portion S with a microscope in a non-stretched state.
  • the elastic members 80 a and 80 b are disposed in the stretched state on the abdominal side A and the back side B of the exterior body 6, respectively, so that when the diaper 1 is attached, these elastic members 80 a and 80 b. Due to the shrinkage of the diaper, the ridges extending along the longitudinal direction X of the diaper 1 are formed in multiple rows in the lateral direction Y of the diaper. However, since the elastic member 80b is not disposed in the elastic member non-arrangement region 9b of the back side portion B described above, there is a possibility that no crease is formed in the region 9b and the impression of the appearance of the diaper 1 is lowered. is there.
  • the distance between the side seal portion S and the end of the back-side elastic member 80b is the distance between the two heels adjacent in the lateral direction Y before the diaper 1 is worn. It is preferable that the distance is smaller than the interval.
  • the elastic member non-arrangement region 9b is hidden in the bag and is difficult to visually recognize from the outside. As a result, deterioration of the appearance of the diaper 1 can be effectively prevented.
  • interval of a collar can be controlled by adjusting the expansion
  • the interval between two ridges adjacent in the horizontal direction Y is measured as follows.
  • the state in which the diaper 1 is stretched in the lateral direction Y is taken as 100%, and the distance between the heel and the top of the heel is measured at 80% elongation. This distance is the distance between the ridges.
  • the state in which the diaper 1 is stretched 100% in the lateral direction Y refers to the unfolded and stretched state as shown in FIG. 2.
  • the unfolded and stretched state refers to the state in which the diaper 1 is unfolded by peeling off the side seal portion S.
  • the diaper 1 in its unfolded state is a state in which the elastic member of each part is extended to the design dimension (same as the dimension when flattened in a state where the influence of the elastic member is completely eliminated). .
  • the distance between the wrinkles thus measured is preferably 3 mm or more, and more preferably 4 mm or more. Moreover, it is preferable that it is 10 mm or less, and it is still more preferable that it is 7 mm or less.
  • the distance between the ridges is, for example, preferably from 3 mm to 10 mm, and more preferably from 4 mm to 7 mm.
  • the diaper 1 having the above configuration can be preferably manufactured by the following method. That is, the outer layer sheet 61 and the inner layer sheet 62 are prepared, and are stretched so that a plurality of ventral elastic members 80a extend in the same direction between the two sheets, and a predetermined interval is generated between the elastic members 80a. Place and fix with. Further, a plurality of back-side elastic members 80b are arranged and fixed between the sheets 61 and 62 in an extended state so as to extend in the same direction and at a predetermined interval between the elastic members 80b. Further, a plurality of leg elastic members 90 are disposed and fixed in a curved state on the curved portions of the sheets 61 and 62. Thereby, the exterior body 6 is obtained.
  • the absorbent main body 5 is disposed on the inner surface of the exterior body 6 obtained in this way, and is joined to the exterior body 6. Next, the inner surfaces of both side edges 6a, 6a of the ventral side A of the exterior body 6 and the inner surfaces of both side edges 6b, 6b of the back side B of the exterior body 6 were overlapped and overlapped. The parts are joined along the longitudinal direction X of the diaper 1. At the time of this joining, the elastic member non-arrangement region 9b described above can be formed. Details thereof will be described later.
  • the side seal portion S has a joint portion extending continuously along the longitudinal direction X of the diaper 1.
  • the side seal part S is a linear joint part consisting of a continuous line extending along the longitudinal direction X of the diaper 1. It is preferable that it is formed to have.
  • the side seal portion S has no non-joined portion as far as possible outside in the lateral direction Y than the joined portion. It is most preferable that the non-joined portion is completely absent. However, when the non-joined portion is present, the width is preferably 3 mm or less, particularly 2 mm or less even at the widest portion.
  • the width of the joint portion in the side seal portion S is as small as possible.
  • the width of the side seal portion S is excessively reduced, the force for joining the abdominal side portion A and the back side portion B of the exterior body 6 tends to decrease, and the joint portion is destroyed in the wearing state of the diaper 1. May end up.
  • the width of the joint is preferably 0.01 mm or more, and more preferably 0.1 mm or more.
  • it is preferable that it is 3 mm or less, and it is still more preferable that it is 2 mm or less.
  • the width of the joint is preferably 0.01 mm or greater and 3 mm or less, and more preferably 0.1 mm or greater and 2 mm or less.
  • the side seal portion S in order to successfully form the above-described elastic member non-arrangement region 9b, it is preferable to form the side seal portion S using, for example, a laser fusing device 120 shown in FIG.
  • the use of the device 120 includes (i) forming a linear joining portion composed of a continuous line extending in the longitudinal direction X of the diaper 1 on the side seal portion S, and (ii) joining the side seal portion S at the side seal portion S. It is also advantageous from the standpoints such that the non-joining portion is present as little as possible outside the portion Y in the lateral direction and (iii) the width of the joining portion in the side seal portion S is narrowed.
  • the method for forming the side seal portion S using the laser fusing device 120 shown in FIG. 5 includes both side edges 6 a and 6 a of the ventral side A of the exterior body 6 and both side edges of the back side B of the exterior body 6. 6b, a method of forming a side seal portion S having a joint portion 40 (see FIG. 6C) fused in an overlapped state with the edge portion of 6b, At least a part of the sheets constituting the exterior body 6 includes a resin material, Laser light passes through one side of the sheet laminate in which both side edges 6a, 6a of the ventral side A of the exterior body 6 and both side edges 6b, 6b of the back side B of the exterior body 6 are overlapped.
  • the sheet constituting the sheet laminate is passed through the light passing portion from the support member side.
  • the sheet laminate is divided, and at the same time, the cut edges of the outer package 6 in the pressurized state generated by the division are fused. And forming the joint portion 40.
  • the laser-type bonding device 120 is disposed in a hollow cylindrical roll 123 having a cylindrical (annular) support member 121 that is rotationally driven in the direction of arrow A, and in a hollow portion of the support member 121.
  • a belt type pressure device 126 provided with 125c.
  • the laser-type bonding apparatus 120 includes a tension adjusting mechanism (not shown) that can adjust the tension of the pressure belt 124 wound around the outer peripheral surface of the annular support member 121 (the peripheral surface portion of the cylindrical roll 123). By adjustment, the pressure applied to the diaper continuous body 110 (sheet laminated body) can be appropriately adjusted by the support member 121 and the pressure belt 124.
  • the diaper continuous body 110 is a precursor for producing the diaper 1 of the present embodiment, and has a shape in which a plurality of diapers 1 are arranged along the lateral direction Y. In this diaper continuous body 110, the elastic members 80a and 80b around the trunk are bonded to the outer layer sheet 61 and / or the inner layer sheet 62 only in the planned cutting portion 110C (see FIG. 6) described later and in the vicinity thereof. It is joined with the agent.
  • the support member 121 forms a peripheral surface portion (contact portion with the workpiece) of the cylindrical roll 123, and is sandwiched between a pair of annular frames 122 and 122 that form both left and right edge portions of the cylindrical roll 123. It is fixed.
  • the support member 121 is composed of a single annular member having the same length as the circumferential length of the annular frame 122, for example, and has heat resistance such as a metal material such as iron, aluminum, stainless steel, copper, or ceramics. Made of material.
  • the support member 121 has a light passage portion through which laser light can pass.
  • the support member 121 has a slit-shaped opening 127 that penetrates the support member 121 in the thickness direction as a light passage portion.
  • the opening 127 has a rectangular shape in plan view, and its longitudinal direction coincides with the width direction of the support member 121 (direction parallel to the rotation axis of the cylindrical roll 123), so that the circumference of the cylindrical support member 121 is A plurality are formed at predetermined intervals in the direction.
  • the support member 121 allows the laser light to pass through the opening 127, but does not allow the laser light to pass through (transmits) at portions other than the opening 127.
  • the opening 127 in the support member 121 1) In addition to a method of drilling the opening 127 in a predetermined portion of the support member 121 by etching, punching, laser processing, or the like, 2) As the support member 121, A method of using a plurality of curved rectangular members in place of one annular member, and arranging the plurality of members between a pair of frame bodies 122, 122 at a predetermined interval in the circumferential direction of the frame body 122 Is mentioned. In the method 2), the interval between two adjacent members is a slit-shaped opening 127.
  • the light passing portion through which the laser light can pass is composed of a slit-shaped opening 127 that penetrates the support member 121 in the thickness direction, and thus overlaps with the opening 127 in the diaper continuous body 110.
  • the part that is, the part to be divided, is merely brought into contact with the pressure belt 124 and is not sandwiched between the support member 121 and the pressure belt 124. Strictly speaking, therefore, the pressure that is generated by being sandwiched between the two members 121 and 124 does not occur in the part to be divided.
  • the parting plan part of the diaper continuous body 110 is a part restrained by the pressurization force between the members 121 and 124, and the pressurizing force is a part that is practically affected.
  • the belt-type pressure device 126 includes an endless pressure belt 124 and three rolls 125a, 125b, and 125c that rotate in a state where the pressure belt 124 is bridged.
  • the rolls 125a, 125b, and 125c may be drive rolls or driven rolls that rotate with the cylindrical roll 123.
  • the pressure belt 124 rotationally drives any one or more of the rolls 125a, 125b, and 125c, and moves at the same speed as the cylindrical roll 123 (support member 121).
  • the support member 121 and the pressure belt 124 are preferably maintained in a predetermined temperature range by air cooling, water cooling, or the like.
  • the pressure belt 124 a heat-resistant metal or resin belt that can withstand the heat generated during processing can be used, and it is made of a metal material such as iron, aluminum, or stainless steel.
  • a belt that does not transmit the laser beam irradiated to the diaper continuous body 110, which is a workpiece, is usually used. it can.
  • an irradiation head 135 that irradiates a laser beam 130 toward the support member 121 that forms the peripheral surface portion of the cylindrical roll 123 is provided in the hollow portion of the hollow cylindrical roll 123 (support member 121). ing.
  • the irradiation head 135 is a galvano scanner that freely scans the laser beam 130, a mechanism for moving the laser beam 130 back and forth in a direction parallel to the rotation axis of the cylindrical roll 123, and the diaper continuum 110 on the support member 121.
  • the irradiation point of the laser beam 130 is set in both directions of the circumferential direction of the cylindrical roll 123 and the direction parallel to the rotational axis of the cylindrical roll 123 perpendicular to the circumferential direction. It can be moved arbitrarily.
  • the diaper continuous body 110 includes a support member 121 that forms a peripheral surface portion of a cylindrical roll 123 that is rotationally driven in an arrow A direction in a state where a predetermined tension is applied by a guide roll (not shown). After being introduced onto the outer surface and transported by a predetermined distance in the circumferential direction by the rotation of the cylindrical roll 123 so as to be wound around the support member 121, it is separated from the support member 121 by an unillustrated lead roll, nip roll or the like. In this way, the diaper continuum 110 is wound around the support member 121 forming the peripheral surface portion of the cylindrical roll 123 with a predetermined tension and conveyed so as to be in pressure contact with the pressure belt 124.
  • the diaper continuous body 110 is made of a synthetic resin.
  • the diaper continuum 110 can be more efficiently compressed.
  • the diaper continuum 110 under compression is irradiated with laser light and divided, It becomes possible to fuse the cut edges of the plurality of sheets constituting the divided portion more reliably, and in the side seal portion S Further improvement in fusion strength of engagement portion can be improved.
  • the rotation angle of the support member 121 (cylindrical roll 123) from when the diaper continuous body 110 is introduced onto the support member 121 to when the diaper continuous body 110 leaves the diaper continuous body 110 can be, for example, 90 degrees or more and 270 degrees or less. Is 120 degrees or more and 270 degrees or less.
  • the range of the angle at which the diaper continuous body 110 is pressed against the support member 121 by the pressure belt 124 is 360 ° when the entire circumference of the cylindrical support member 121 (cylindrical roll 123) is pressed.
  • it is preferably 90 ° or more and 270 ° or less, and more preferably 120 ° or more and 270 ° or less.
  • one surface 110 a is formed on the peripheral surface portion of the cylindrical roll 123.
  • the diaper continuum 110 in contact with the outer surface of the support member 121 and having a slit-shaped opening 127 through which the laser beam 130 can pass is pressed from the support member 121 side to the pressed diaper continuous body 110.
  • the diaper continuum 110 is divided by irradiating the laser beam 130 through the, and at the same time, the cut edges of the plurality of sheets in the pressurized state generated by the division are fused together, The seal portion S is formed.
  • the other surface 110 b of the diaper continuum 110 that is in contact with the support member 121 (see FIG. 6A).
  • One surface 110 a that is a contact surface with the support member 121 and Is pressed against the continuous surface of the diaper 110 in that state by irradiating the laser beam 130 through the slit-shaped opening 127 from the support member 121 side.
  • the diaper 1 having the side seal portion S is continuously manufactured. In this way, the irradiation of the laser beam 130 is performed on the diaper continuum 110 that is in a pressurized state by being sandwiched between the support member 121 and the pressure belt 124. It is preferable from the viewpoint of reliably fusing the cut edge portions of the side seal portion S and improving the fusion strength of the side seal portion S.
  • FIG. 1 schematically shows a portion 110C to be divided by the laser beam 130 of the diaper continuum 110 and its vicinity.
  • segmentation scheduled parts of the diaper continuous body 110 are the center of the conveyance direction A in the area
  • the parting plan part 110C is a four-layer structure part in which, for example, four sheets are stacked. As shown in FIG.
  • the four-layer structure portion is composed of two sheets (outer layer sheet 61 and inner layer sheet 62) on the ventral side A and two sheets 61 and 62 on the back side B. These four sheets are laminated.
  • the elastic members 80a and 80b are interposed between the overlapping sheets 61 and 62.
  • FIGS. 6A to 6C the elastic members 80a and 80b are illustrated from the viewpoint of easy explanation. Omitted.
  • One or both of the sheets 62) is a sheet that absorbs the laser beam 130 and generates heat.
  • the two overlapping sheets in the vicinity of the parting portion 110C and the vicinity thereof may be joined by an adhesive or the like before irradiation with the laser light 130, or may not be joined at all.
  • the diaper continuous body 110 is arranged in the direction of arrow A so that one surface 110a abuts on the support member 121 and the parting portion 110C is located on the slit-shaped opening 127.
  • the pressure belt 124 While being introduced onto the rotating support member 121 and being pressed against the other surface 110b, the pressure belt 124 is pressed in the thickness direction while being conveyed in the arrow A direction.
  • the laser beam 130 is irradiated from the support member 121 side through the opening 127 to the parting portion 110C in a pressurized state.
  • the irradiation point of the laser beam 130 is configured to be arbitrarily movable in the circumferential direction of the cylindrical roll 123, and is set to move following the movement of the opening 127 along the circumferential direction. Therefore, the laser beam 130 is continuously irradiated for a certain period of time to the parting planned portion 110C located on the opening 127 during the transportation.
  • the forming materials (synthetic fibers, etc.) of the sheets 61 and 62 existing in the parting planned part 110C are vaporized and lost by the heat generated by the direct irradiation of the laser light 130,
  • the forming material existing in the vicinity of the parting portion 110 ⁇ / b> C is indirectly heated by the laser beam 130 and melts.
  • the part to be cut 110C is melted and one diaper 1 is cut from the diaper continuous body 110, so that the diaper continuous body 110 is cut at the same time.
  • the cut edges of the four sheets 61 and 62 in the diaper 1 generated by the cutting and the cut edges of the four sheets 61 and 62 in the separated diaper continuous body 110 are fused. .
  • Each of these cut edges is in a pressurized state (compressed state) by being sandwiched between the support member 121 and the pressure belt 124 from before the formation (before the diaper continuous body 110 is divided by irradiation of the laser beam 130). ).
  • the adhesive (not shown) that fixes the elastic members 80a and 80b in the diaper continuous body 110 is softened. Due to this, the end portions of the elastic members 80a and 80b generated along with the fusing of the sheet are slightly pulled inward in the lateral direction Y because the elastic members 80a and 80b are in the extended state. As a result, the end portions of the elastic members 80a and 80b are separated from the joint portion 40 of the side seal portion S formed by fusing and fusing. By this separation, the above-described elastic member non-arrangement region is formed.
  • the elastic member non-arrangement region is formed by separating the end portions of the elastic members 80a and 80b generated by the separation from the joint portion 40 of the side seal portion S.
  • region may be formed in any of the stomach side part A and the back side part B which pinched
  • the diaper continuous body 110 is divided by a single laser light irradiation, and the sheet is in two pressurized states generated by the division.
  • the fusion and separation are the same with approximately half the laser output compared to the method of fusing the two fusion places with two laser irradiations. It can be carried out in a process, and the diaper 1 can be manufactured efficiently. Moreover, since fusion and parting can be performed in the same process, a non-joint part in which the cut edges of the sheet are not fused is not generated, so that the appearance of the diaper 1 is improved.
  • the cut edges of the sheets 61 and 62 are heated and melted during the irradiation of the laser beam 130 and immediately after the irradiation, but each one cut from the diaper continuous body 110 by the irradiation of the laser beam 130.
  • the leaf diaper and the diaper continuum 110 are easily cooled by the contact of the support member 121 after the irradiation is completed, while being pressed by the support member 121 and the pressure belt 124. Then, it is quickly cooled and solidified by heat transfer to the pressure belt 124, and the joint 40 is formed by melting and integrating the material for forming the cut edge including the adhesive.
  • the joint portion 40 By forming the joint portion 40 in this way, one of the pair of side seal portions S, S in one diaper 1 is formed.
  • the cutting edge portions of the sheets 61 and 62 may be forcibly cooled by using known cooling means such as a suction device and an exhaust device to promote the formation of the joint portion 40.
  • the laser beam 130 is moved so that the irradiation point hits another opening 127 adjacent in the direction opposite to the conveyance direction A, and the other opening 127 is separated.
  • 110C is irradiated to another parting planned portion 110C located above the part.
  • another portion 110C to be divided is divided and fused in the same manner as described above, and the other side seal portion S that forms a pair with the previously formed side seal portion S is formed.
  • the same operation is repeated to continuously manufacture the diaper 1 having the pair of side seal portions S, S.
  • the side seal portion S of the diaper 1 is formed by a fusion method using laser light irradiation, and is not formed by another fusion method.
  • the diaper continuous body When the diameter ⁇ of the spot of the laser beam 130 at 110 (the portion irradiated with the laser beam 130) is small (when ⁇ / W is less than 1), it is formed by irradiation with the laser beam 130 as shown in FIG.
  • the pair of side seal portions S, S formed is a portion overlapping the opening 127 in the diaper continuous body 110 (a pair of opening edges along the direction orthogonal to the conveying direction A of the slit-shaped opening 127 in plan view) A portion sandwiched between the two).
  • the diaper continuous body 110 even if it is a portion that is not sandwiched between the support member 121 and the pressure belt 124, the vicinity of the opening 127, that is, as described above, by the sandwiching between both the members 121 and 124.
  • the joint 40 can be formed if it is a site where pressure is practically affected.
  • the thickness T1 of the side seal portion S is such that the side seal portions of the ventral side portion A and the back side portion B of the exterior body 6 constituting the side seal portion S respectively. It is larger than the thickness T2 of the portion adjacent to S.
  • the thickness T1 of the side seal portion S is measured by cutting the side seal portion S and observing the cross section with a microscope in a no-load state.
  • the thickness T2 of the ventral portion A and the back portion B of the exterior body 6 is adjacent to the side seal portion S, and at the position where no wrinkles are formed where the adhesives 10a and 10b are applied.
  • the cross section of the body 6 is measured by observing with a microscope.
  • the thickness T2 of the ventral portion A and the back portion B of the outer package 6 is measured by measuring the distance between the flat plates in a state where a load of 0.5 cN / cm 2 is applied with the outer package 6 sandwiched between the flat plates, That value is the thickness.
  • the measurement of the thickness of the side seal part using a microscope is performed at a magnification of 50 to 200 times by using a microscope (VHX-1000 manufactured by KEYENCE) with three cross sections separated in the longitudinal direction in the side seal part of one diaper. Observing and obtaining the thickness in each cross section, it can be obtained as an average value of the measured thickness of three places.
  • the thickness T1 of the side seal portion S is preferably 0.2 mm or more, more preferably 0.25 mm or more, preferably 2 mm or less, more preferably 1.5 mm or less.
  • the thickness T1 of the side seal portion S is preferably 0.2 mm or more and 2 mm or less, for example, and more preferably 0.25 mm or more and 1.5 mm or less.
  • the elastic member non-arrangement region is formed almost simultaneously with the side seal portion S. Instead, the elastic member non-arrangement region is formed when the diaper 1 is worn. You may be made to do. Specifically, in the manufacturing method described above, when the side seal portion S is formed by appropriately adjusting the type and application amount of the adhesive to be used or the irradiation condition of the laser beam 130, the elastic member non-arrangement region is formed. Do not let it. In the diaper 1 obtained in this way, the positions of the end portions of the elastic members 80a and 80b coincide with the positions of the side seal portions S.
  • the elastic members 80a and 80b are stretched by wearing, whereby stress is applied to the elastic members 80a and 80b.
  • the end portions of the elastic members 80a and 80b can be slightly pulled inward in the lateral direction Y by appropriately selecting the type of adhesive and the amount of application.
  • the end portions of the elastic members 80a and 80b are separated from the joint portion 40 of the side seal portion S.
  • the elastic member 80a and the elastic member 80b are not connected via the side seal portion S. The inconvenience as shown in FIG. 10 is less likely to occur.
  • the elastic member non-arrangement region may be already formed in a state before wearing the diaper 1 or is not formed in a state before wearing the diaper 1, but the diaper 1.
  • the elastic member non-arrangement region may be formed in the wearing state.
  • an elastic member non-arrangement region should just be formed by tearing the side seal part S and taking off the diaper 1.
  • this invention was demonstrated based on the preferable embodiment, this invention is not restrict
  • a preferable manufacturing method of the side seal portion S fusing by laser light using the apparatus shown in FIG. 5 is given as an example.
  • the manufacturing method of the side seal portion S is not limited to this, For example, a heat sealing method, an ultrasonic sealing method, a high frequency sealing method, an adhesive bonding method, or the like may be employed.
  • the exterior body shown in FIG. 9 may be used.
  • the exterior body 6 shown in the figure has an outer layer sheet 61 and an inner layer sheet 62, and a plurality of elastic members 80 extending along the lateral direction of the diaper 1 are disposed between the sheets 61 and 62 in an expanded state. It is what.
  • Each elastic member 80 is fixed to at least one of the outer layer sheet 61 and the inner layer sheet 62 only at both ends thereof.
  • each of the elastic members 80 is in an unfixed state in both the outer layer sheet 61 and the inner layer sheet 62 at a portion between both end portions.
  • the outer layer sheet 61 and the inner layer sheet 62 are intermittently joined by the joining part 63 between the two elastic members 80 adjacent along the longitudinal direction X of the diaper 1.
  • the joining part 63 has comprised the joining part row
  • FIG. By employing such an exterior body 6, it is possible to form a wrinkle having a better appearance.
  • the diaper of the said embodiment had the exterior body 6 which passed the crotch C from the stomach side part A and the back side part B, and the absorptive main body arrange
  • the present invention is applied to a pants-type disposable diaper in which an absorbent main body straddles between a ventral sheet member including a waist circumference elastic member and a back side sheet member similarly including a waist circumference elastic member. May be.
  • region 9b was formed only in the back side part B of the diaper 1, it replaces with this and an elastic member non-arrangement area
  • region is formed only in the belly side part A of the diaper 1. May be. Or you may form an elastic member non-arrangement field in both ventral side A and back side B.
  • This invention discloses the following underpants type disposable diaper regarding embodiment mentioned above further.
  • a pair of sides formed by joining the crotch, the abdominal side and the back side extending from the front and back of the crotch, both side edges of the abdomen, and both side edges of the back side
  • a pants-type disposable diaper comprising a seal portion and having a longitudinal direction corresponding to the front-rear direction of the wearer and a lateral direction perpendicular thereto;
  • the side seal portion has a joint portion extending continuously along the longitudinal direction of the diaper,
  • a plurality of elastic members extending in the lateral direction of the diaper are arranged in an extended state at intervals in the longitudinal direction of the diaper on both the ventral side and the back side.
  • the end portion of the elastic member that is located closer to the side seal portion does not reach the position of the side seal portion, and the side seal portion
  • the elastic body non-arrangement region is formed between the side seal portion and the end portion of the elastic member.
  • an adhesive is intermittently applied along the longitudinal direction of the diaper at a position on an extension line extending in the lateral direction Y from the position where the elastic member is disposed, A pants-type disposable diaper in which the end of the elastic member is fixed by an adhesive.
  • the width of the elastic body non-arrangement region is preferably more than 0 mm, more preferably 0.001 mm or more, still more preferably 0.01 mm or more, and preferably 3 mm or less,
  • ⁇ 4> In the abdomen, a plurality of abdominal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper, In the dorsal side portion, a plurality of dorsal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper,
  • the pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 3>, wherein the ventral elastic member and the dorsal elastic member are not connected via the side seal portion.
  • ⁇ 5> The underpants-type disposable diaper according to any one of ⁇ 1> to ⁇ 4>, wherein no non-joining portion exists outside the joining portion in the side seal portion in the lateral direction.
  • a plurality of ridges extending in the longitudinal direction of the diaper are formed on the ventral side portion and the back side portion by contraction of the elastic member in the lateral direction of the diaper, In the elastic body non-arrangement region, in a state before the diaper is worn, a distance between the side seal portion and the end portion of the elastic member is smaller than an interval between the two adjacent ridges in the lateral direction.
  • the pants-type disposable diaper according to ⁇ 6> wherein the distance between the ridges is preferably 3 mm or more, more preferably 4 mm or more, preferably 10 mm or less, and more preferably 7 mm or less.
  • the ventral side portion and the back side portion have an outer layer sheet, an inner layer sheet, and the elastic member disposed between both sheets, The elastic member is fixed to at least one of the outer layer sheet and the inner layer sheet only at both ends thereof, and is not fixed to both the outer layer sheet and the inner layer sheet at a portion between both ends.
  • the pants type according to any one of ⁇ 1> to ⁇ 7>, wherein the outer layer sheet and the inner layer sheet are intermittently joined between two elastic members adjacent along the longitudinal direction of the diaper.
  • Disposable diapers ⁇ 9> Any one of ⁇ 1> to ⁇ 8>, wherein the thickness of the side seal portion is larger than the thickness of the portion adjacent to the side seal portion of each of the ventral side portion and the back side portion constituting the side seal portion.
  • the joint portion preferably has a width of 0.01 mm or more, more preferably 0.1 mm or more, preferably 3 mm or less, and more preferably 2 mm or less ⁇ 1> to ⁇ 9. > The underpants type disposable diaper of any one of>.
  • the thickness of the side seal portion is preferably 0.2 mm or more, more preferably 0.25 mm or more, preferably 2 mm or less, more preferably 1.5 mm or less. Any one of ⁇ 1> to ⁇ 10> The pants-type disposable diaper described in 1.
  • ⁇ 12> In the abdomen, a plurality of abdominal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper, The pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 11>, wherein the abdomen elastic member has an interval between two adjacent ones spaced apart in the vertical direction.
  • ⁇ 13> In the dorsal side portion, a plurality of dorsal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper, The back elastic member is a pants-type disposable diaper according to any one of ⁇ 1> to ⁇ 12>, in which two adjacent spaces are equally spaced apart in the vertical direction.
  • a plurality of abdominal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper
  • a plurality of dorsal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper, ⁇ 1> thru
  • interval of the two said belly side elastic members adjacent at intervals in the vertical direction is the same as the space
  • a plurality of abdominal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper
  • a plurality of dorsal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper
  • the arrangement position of the ventral elastic member and the dorsal elastic member is viewed along the vertical direction, the arrangement position of the ventral elastic member and the arrangement position of the dorsal elastic member are substantially the same ⁇
  • the pants-type disposable diaper according to any one of 1> to ⁇ 14>.
  • ⁇ 16> In the abdomen, a plurality of abdominal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper, In the dorsal side portion, a plurality of dorsal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper, Any one of ⁇ 1> to ⁇ 15>, wherein a position of an end portion of the belly side elastic member near the side seal portion and a position of an end portion of the back side elastic member near the side seal portion are different.
  • ⁇ 17> In the abdomen, a plurality of abdominal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper, In the dorsal side portion, a plurality of dorsal elastic members extending in the lateral direction of the diaper are arranged in an elongated state at intervals in the longitudinal direction of the diaper, The position of the end portion of the ventral elastic member near the side seal portion coincides with the position of the side seal portion, The end portion of the back elastic member located near the side seal portion does not reach the position of the side seal portion, and terminates at a position inward in the lateral direction from the side seal ⁇ 1. > The pants-type disposable diaper according to any one of ⁇ 16>.
  • the elastic member non-arrangement region is formed only on the back side, the elastic member non-arrangement region is formed only on the ventral side, or both the ventral side and the back side
  • the elastic member non-arrangement region is not formed in a state before the diaper is worn, the elastic member is extended in the wearing state of the diaper, and an end portion of the elastic member is inward in the lateral direction.
  • the peelability of the side seal portion of the diaper is improved, and the diaper can be easily replaced.

Abstract

Selon l'invention, une partie joint latéral (S) possède une partie liaison (40) se prolongeant en continu suivant une direction longitudinale (X). Des éléments élastiques (80a, 80b) se prolongeant dans une direction latérale (Y), sont placés à la fois sur une partie côté ventre (A) et sur une partie côté dos (B), dans un état d'étirement et selon un intervalle dans la direction longitudinale (X). Parmi les parties extrémité des éléments élastiques (80a, 80b), au niveau de la partie côté ventre (A) ou de la partie côté dos (B), celles positionnées côté partie joint latéral (S), atteignent la position de la partie joint latéral (S), et forment une extrémité terminale en une position côté interne dans la direction latérale (Y) par rapport à la partie joint latéral (S), formant ainsi une région de non disposition d'élément élastique (9b). Dans cette région de non disposition d'élément élastique (9b), un adhésif (10b) est appliqué de manière intermittente suivant la direction longitudinale (X), en des positions sur une ligne d'extension se prolongeant dans la direction latérale (Y) depuis la position d'emplacement des éléments élastiques (80a, 80b), et la partie extrémité des éléments élastiques (80b) est fixée par cet adhésif (10b).
PCT/JP2014/066920 2013-06-28 2014-06-26 Couche jetable type culotte WO2014208635A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BR212015026837-0U BR212015026837Y1 (pt) 2013-06-28 2014-06-26 fralda descartável do tipo cueca
CN201490000607.3U CN205094804U (zh) 2013-06-28 2014-06-26 短裤型一次性尿布
KR2020157000043U KR200489039Y1 (ko) 2013-06-28 2014-06-26 팬츠형 일회용 기저귀
RU2015147699U RU169501U1 (ru) 2013-06-28 2014-06-26 Одноразовый подгузник типа трусов

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013137405A JP6207897B2 (ja) 2013-06-28 2013-06-28 パンツ型使い捨ておむつ
JP2013-137405 2013-06-28

Publications (1)

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WO2014208635A1 true WO2014208635A1 (fr) 2014-12-31

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PCT/JP2014/066920 WO2014208635A1 (fr) 2013-06-28 2014-06-26 Couche jetable type culotte

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JP (1) JP6207897B2 (fr)
KR (1) KR200489039Y1 (fr)
CN (1) CN205094804U (fr)
BR (1) BR212015026837Y1 (fr)
RU (1) RU169501U1 (fr)
TW (1) TWM501840U (fr)
WO (1) WO2014208635A1 (fr)

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WO2017163753A1 (fr) * 2016-03-23 2017-09-28 大王製紙株式会社 Produit jetable de type culotte
JP2017225847A (ja) * 2017-08-31 2017-12-28 大王製紙株式会社 パンツタイプ使い捨て製品
JP2018110898A (ja) * 2018-03-12 2018-07-19 大王製紙株式会社 パンツタイプ使い捨て製品
US10806635B2 (en) 2016-03-15 2020-10-20 The Procter & Gamble Company Methods and apparatuses for separating and positioning discrete articles
EP3960141A1 (fr) * 2020-08-31 2022-03-02 W. Pelz GmbH & Co. KG Article d'hygiène sous la forme de culotte

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JP2017070587A (ja) * 2015-10-08 2017-04-13 花王株式会社 パンツ型使い捨ておむつ
JP7139276B2 (ja) * 2019-03-28 2022-09-20 大王製紙株式会社 パンツタイプ使い捨て着用物品及びその製造方法
JP6903116B2 (ja) * 2019-12-09 2021-07-14 大王製紙株式会社 パンツタイプ使い捨ておむつ
RU200756U1 (ru) * 2020-05-20 2020-11-11 Владимир Анатольевич Петряков Одноразовый подгузник

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JPH09206330A (ja) * 1996-01-31 1997-08-12 Uni Charm Corp 使い捨てのパンツ型体液吸収性着用物品
JP2001333932A (ja) * 2000-05-26 2001-12-04 Uni Charm Corp パンツ型の使い捨て着用物品
JP2003047631A (ja) * 2002-07-01 2003-02-18 Daio Paper Corp パンツ型おむつ
WO2004054482A1 (fr) * 2002-12-13 2004-07-01 Hakujuji Kabushiki Kaisha Article absorbant jetable
WO2013094591A1 (fr) * 2011-12-20 2013-06-27 花王株式会社 Article porté de type sous-vêtement

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10806635B2 (en) 2016-03-15 2020-10-20 The Procter & Gamble Company Methods and apparatuses for separating and positioning discrete articles
WO2017163753A1 (fr) * 2016-03-23 2017-09-28 大王製紙株式会社 Produit jetable de type culotte
JP2017169730A (ja) * 2016-03-23 2017-09-28 大王製紙株式会社 パンツタイプ使い捨て製品
JP2017225847A (ja) * 2017-08-31 2017-12-28 大王製紙株式会社 パンツタイプ使い捨て製品
JP2018110898A (ja) * 2018-03-12 2018-07-19 大王製紙株式会社 パンツタイプ使い捨て製品
EP3960141A1 (fr) * 2020-08-31 2022-03-02 W. Pelz GmbH & Co. KG Article d'hygiène sous la forme de culotte
WO2022043583A1 (fr) 2020-08-31 2022-03-03 W. Pelz Gmbh & Co. Kg Article d'hygiène sous forme de culotte

Also Published As

Publication number Publication date
KR200489039Y1 (ko) 2019-04-19
JP6207897B2 (ja) 2017-10-04
TWM501840U (zh) 2015-06-01
BR212015026837U2 (pt) 2019-09-17
RU169501U1 (ru) 2017-03-21
CN205094804U (zh) 2016-03-23
KR20160000755U (ko) 2016-03-07
JP2015008952A (ja) 2015-01-19
BR212015026837Y1 (pt) 2021-01-12

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