[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

JP2012111076A - Laminated sheet - Google Patents

Laminated sheet Download PDF

Info

Publication number
JP2012111076A
JP2012111076A JP2010260325A JP2010260325A JP2012111076A JP 2012111076 A JP2012111076 A JP 2012111076A JP 2010260325 A JP2010260325 A JP 2010260325A JP 2010260325 A JP2010260325 A JP 2010260325A JP 2012111076 A JP2012111076 A JP 2012111076A
Authority
JP
Japan
Prior art keywords
sheet
laminated sheet
laminated
fused
hole
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.)
Pending
Application number
JP2010260325A
Other languages
Japanese (ja)
Inventor
Makoto Kokubo
真 小久保
Yasuji Imai
康至 今井
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.)
Kao Corp
Original Assignee
Kao 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 Kao Corp filed Critical Kao Corp
Priority to JP2010260325A priority Critical patent/JP2012111076A/en
Priority to PCT/JP2011/076511 priority patent/WO2012070462A1/en
Priority to CN201180055438.4A priority patent/CN103221195B/en
Publication of JP2012111076A publication Critical patent/JP2012111076A/en
Pending 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
    • B29C66/05—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
    • 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
    • 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
    • B29C65/1651—Laser beams characterised by the way of heating the interface radiating the edges of the parts to be joined radiating the edges of holes or perforations
    • 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
    • B29C65/1658—Laser beams characterised by the way of heating the interface scanning at least one of the parts to be joined scanning once, e.g. contour 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
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • 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
    • B29C65/743—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 the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B29C65/7437—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 the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc the tool being a perforating tool
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • B29C65/7847—Holding or clamping means for handling purposes using vacuum to hold at least one 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
    • B29C66/01—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
    • 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
    • B29C66/81431—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 cavity, e.g. a groove
    • 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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • 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
    • 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
    • B29C66/8351—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
    • 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
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1616—Near infrared radiation [NIR], e.g. by YAG lasers
    • 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
    • B29C65/1603—Laser beams characterised by the type of electromagnetic radiation
    • B29C65/1612—Infrared [IR] radiation, e.g. by infrared lasers
    • B29C65/1619—Mid infrared radiation [MIR], e.g. by CO or CO2 lasers
    • 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
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Textile Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a laminated sheet having high joining strength between sheets and excellent texture.SOLUTION: In the laminated sheet 5, the plurality of sheets 11-16 are laminated and partially fused. A plurality of through holes 51 are formed on the laminated sheet 5, and a fused part 52 in which the plurality of sheets 11-16 are fused is formed on the inner peripheral face of each of the through holes 51. The fused part 52 is formed in a position separating from one face 5a of the laminated sheet 5, and an opening peripheral edge of the through hole 51 is not protruded from the other face 5b of the laminated sheet 5.

Description

本発明は、複数枚のシートが積層されて部分的に融着されている積層シートに関する。   The present invention relates to a laminated sheet in which a plurality of sheets are laminated and partially fused.

不織布等の加圧すると厚みが変化するシート材を積層し、それらを熱融着するには、それらを、一方又は両方がヒーター等で加熱された金属間に挟み込み、それらを十分に加圧及び加熱する熱板シールが汎用されている。
しかし、本来、比較的厚みがあり、柔らかく又は肌触りも良い不織布であるが、熱板シールにより熱融着させると、加圧及び加熱により融着部が硬くなる。そして、この硬い融着部が、積層シートの表面に露出すると、肌触りを悪化させ、例えば、使い捨ておむつや生理用ナプキン等のサニタリー用品等の肌に触れる商品に使用した場合には、商品価値を低下させる恐れがある。
特許文献１には、パンツ型の使い捨ておむつのサイドシール部の硬質部分が着用者の足等に当たって痛みの原因となることが多々あるという問題を、高さ寸法の相違する単位融着部群で接合することで解消する方法を提案しているが、少なくない面積の硬質部分が表面に露出しているため、使用者が硬い感触を受けることがある。 In order to laminate sheet materials whose thickness changes when pressed, such as nonwoven fabrics, and to heat-seal them, sandwich one or both of them between metals heated by a heater, etc. A hot plate seal for heating is widely used.
However, although it is a nonwoven fabric that is relatively thick and soft or soft to the touch, the fused portion becomes hard due to pressurization and heating when heat-sealed by a hot plate seal. And when this hard fused part is exposed on the surface of the laminated sheet, the touch is worsened.For example, when it is used for a product that touches the skin such as sanitary goods such as disposable diapers and sanitary napkins, There is a risk of lowering.
In patent document 1, the problem that the hard part of the side seal part of the pants-type disposable diaper often hits the wearer's foot or the like causes pain, in the unit fusion part group having different height dimensions. Although the method of eliminating by joining is proposed, since the hard part of a certain area is exposed on the surface, a user may receive a hard touch.

また、特許文献２には、上層不織布及び下層不織布を有し、両不織布によって周囲を取り囲まれた立体的な開孔が下層不織布側に突出するように形成されている表面シートが記載されている。
しかし、この表面シートは、下層不織布側に突出部ができるため、肌触りや外観上の理由から、製品構成上、下層不織布側が目にも肌に触れない所、例えばサニタリー用品の吸収体表面などにしか使用されておらず、パンツ型おむつの外装材などの様に両面が肌に触れる可能性があるところに使用することは困難であった。 Patent Document 2 describes a surface sheet that has an upper layer nonwoven fabric and a lower layer nonwoven fabric, and is formed such that a three-dimensional opening surrounded by both nonwoven fabrics protrudes toward the lower layer nonwoven fabric side. .
However, since this surface sheet has a protruding portion on the lower nonwoven fabric side, for reasons of touch and appearance, on the structure of the product, the lower nonwoven fabric side is not in contact with the eyes, for example, on the surface of the absorbent body of sanitary goods. However, it has been difficult to use it where there is a possibility that both sides may touch the skin, such as a pants-type diaper exterior.

特開２００８−８６４９５号公報JP 2008-86495 A 特開２００６−１２９８９１号公報JP 2006-1229891 A

従って、本発明の課題は、前述した従来技術が有する欠点を解消し得る積層シートを提供することにある。   Therefore, the subject of this invention is providing the laminated sheet which can eliminate the fault which the prior art mentioned above has.

本発明は、複数枚のシートが積層されて部分的に融着されている積層シートであって、複数の貫通孔が形成されており、該貫通孔の内周面に、複数枚のシートが融着した融着部が形成されており、前記融着部は、積層シートの一方の面から離間した位置に形成されており、且つ前記貫通孔の開口周縁部が、該積層シートの他方の面から突出していない、積層シートを提供するものである。   The present invention is a laminated sheet in which a plurality of sheets are laminated and partially fused, and a plurality of through holes are formed, and a plurality of sheets are formed on the inner peripheral surface of the through holes. A fused part is formed, the fused part is formed at a position spaced from one surface of the laminated sheet, and the opening peripheral edge of the through hole is the other side of the laminated sheet. The present invention provides a laminated sheet that does not protrude from the surface.

本発明の積層シートは、シートどうしの接合強度が高く、肌触りも良好である。   The laminated sheet of the present invention has high bonding strength between sheets and good touch.

図１は、本発明の一実施形態である積層シートの一部を拡大して示す斜視図である。FIG. 1 is an enlarged perspective view showing a part of a laminated sheet according to an embodiment of the present invention. 図２は、図１の積層シートのＸ方向に直交するＹ方向の断面図である。2 is a cross-sectional view in the Y direction orthogonal to the X direction of the laminated sheet of FIG. 図３は、複数枚のシートを重ねて得たシート積層体に、レーザー光を用いて、融着部を有する貫通孔を形成する様子を示す説明図である。FIG. 3 is an explanatory diagram showing a state in which a through-hole having a fused portion is formed using a laser beam in a sheet laminate obtained by stacking a plurality of sheets. 図４は、本発明の積層シートの製造に好適に用いられるレーザー式接合装置を示す図である。FIG. 4 is a view showing a laser-type bonding apparatus that is preferably used for manufacturing the laminated sheet of the present invention. 図５は、本発明の積層シートの製造に好適に用いられる穿孔加工装置を示す概略図である。FIG. 5 is a schematic view showing a perforating apparatus suitably used for manufacturing the laminated sheet of the present invention. 図６は、図５に示す穿孔加工装置における穿孔加工部のロール軸長方向に沿う拡大断面図である。FIG. 6 is an enlarged cross-sectional view along the roll axis length direction of the punching section in the punching apparatus shown in FIG.

以下、本発明をその好ましい実施態様に基づき図面を参照しながら説明する。
本発明の一実施形態である積層シート５は、図２に示すように、複数枚のシート１１〜１６が積層されて部分的に融着されてなる多層構造のシートである。
積層シート５には、図１に示すように、複数の貫通孔５１，５１・・が形成されている。複数の貫通孔５１，５１・・は、積層シート５の平面方向（面５ａ，５ｂと平行な方向）の一方向（Ｘ方向）に、所定の間隔で直列している。 Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.
As shown in FIG. 2, the laminated sheet 5 according to an embodiment of the present invention is a sheet having a multilayer structure in which a plurality of sheets 11 to 16 are laminated and partially fused.
As shown in FIG. 1, the laminated sheet 5 has a plurality of through holes 51, 51. The plurality of through holes 51, 51,... Are arranged in series at a predetermined interval in one direction (X direction) of the plane direction of the laminated sheet 5 (direction parallel to the surfaces 5a, 5b).

図１には、Ｘ方向に直列した３以上の貫通孔５１からなる貫通孔列Ｒが１本のみ示されているが、本発明の積層シートは、そのような貫通孔列Ｒを、当該貫通孔列が延びる方向（Ｘ方向）と直交する方向（Ｙ方向）に、一列のみ形成されていても良いし、複数列形成されていても良い。複数列形成されている場合、隣り合う列どうしで、Ｘ方向における貫通孔５１の位置が一致していても良いし、ずれていても良い。例えば、半ピッチ分ずれていても良い。   Although FIG. 1 shows only one through-hole row R composed of three or more through-holes 51 in series in the X direction, the laminated sheet of the present invention has such a through-hole row R connected to the through-hole row R. Only one row may be formed in a direction (Y direction) orthogonal to the direction in which the hole rows extend (X direction), or a plurality of rows may be formed. When a plurality of rows are formed, the positions of the through holes 51 in the X direction may be the same or may be shifted between adjacent rows. For example, it may be shifted by a half pitch.

本実施形態の積層シート５は、両面５ａ，５ｂとも平坦であり、貫通孔５１の開口部付近と貫通孔列Ｒ内の隣り合う貫通孔５１間の領域が、両面５ａ，５ｂから窪んでいる。
また、本実施形態の積層シート５は、何れの面５ａ，５ｂについても、貫通孔５１の開口周縁部が、該面５ａ，５ｂから突出していない。本実施形態の積層シート５の一方の面５ａについての、貫通孔５１の開口周縁部は、概ね、積層シート５の平面方向（厚み方向に直交する方向）における、該貫通孔５１の内周面と該面５ａの平坦な部分との間の部分であり、積層シート５の他方の面５ｂについての、貫通孔５１の開口周縁部は、概ね、積層シート５の平面方向における、該貫通孔５１の内周面と該面５ｂの平坦な部分との間の部分である。 In the laminated sheet 5 of the present embodiment, both surfaces 5a and 5b are flat, and the region between the opening portion of the through hole 51 and the adjacent through hole 51 in the through hole row R is recessed from both surfaces 5a and 5b. .
Moreover, as for the laminated sheet 5 of this embodiment, the opening peripheral part of the through-hole 51 does not protrude from this surface 5a, 5b about any surface 5a, 5b. The opening peripheral edge of the through hole 51 on one surface 5a of the laminated sheet 5 of the present embodiment is generally the inner peripheral surface of the through hole 51 in the plane direction of the laminated sheet 5 (direction orthogonal to the thickness direction). And the opening peripheral edge of the through hole 51 with respect to the other surface 5 b of the laminated sheet 5 is generally the through hole 51 in the planar direction of the laminated sheet 5. This is a portion between the inner peripheral surface of the surface and the flat portion of the surface 5b.

積層シート５における貫通孔５１は、図２に示すように、積層シート５を厚み方向（Ｚ方向）に貫通しており、該貫通孔５１の内周面に、複数枚のシート１１〜１６が融着した融着部５２が形成されている。融着部５２は、貫通孔５１の周囲を取り囲んでおり、貫通孔５１の内周面の全周に亘って形成されている。融着部５２は、複数枚のシート１１〜１６が結合した状態となっていれば良く、完全な円筒状をなしている必要はない。   As shown in FIG. 2, the through hole 51 in the laminated sheet 5 penetrates the laminated sheet 5 in the thickness direction (Z direction), and a plurality of sheets 11 to 16 are formed on the inner peripheral surface of the through hole 51. A fused portion 52 is formed. The fused portion 52 surrounds the periphery of the through hole 51 and is formed over the entire circumference of the inner peripheral surface of the through hole 51. The fusion | melting part 52 should just be in the state which the several sheets 11-16 couple | bonded together, and does not need to have comprised the complete cylindrical shape.

本実施形態における融着部５２は、積層シート５を構成するシート１１〜１６の全てが、溶融した後、固化して形成されている。融着部５２は、貫通孔５１の内周面に位置する複数枚のシート１１〜１６のうちの１以上のシートが溶融固化して形成されていることが好ましく、２以上のシートが溶融固化して形成されていることがより好ましく、全てのシートが溶融固化して形成されていることが更に好ましい。   The fused portion 52 in the present embodiment is formed by solidifying after all the sheets 11 to 16 constituting the laminated sheet 5 are melted. The fusion part 52 is preferably formed by melting and solidifying one or more of the plurality of sheets 11 to 16 positioned on the inner peripheral surface of the through hole 51, and two or more sheets are melted and solidified. More preferably, all the sheets are melted and solidified.

融着部５２は、図２に示すように、積層シート５の両面５ａ，５ｂの何れの面からも離間した位置に形成されている。
積層シート５の一方の面５ａから融着部５２までの距離ｄ１（図２参照）は、該面５ａの肌触りを良くする観点から、積層シート５の厚みｔの５％以上であることが好ましい。距離ｄ１を大きくすることは融着部５２と積層シート５の面５ａとの離間を大きくすることであるが、その反面、融着部５２の厚みｄ３が小さく密になり、逆に肌触りを悪化させることがあるため、距離ｄ１は、積層シート５の厚みｔの１０〜２０％であることがより望ましい。同様の観点から、前記距離ｄ１は、０．１ｍｍ以上であることが好ましく、より好ましくは０．２〜０．３ｍｍである。
積層シート５の他方の面５ｂから融着部５２までの距離ｄ２（図２参照）は、該面５ｂの肌触りを良くする観点から、積層シート５の厚みｔの５％以上であることが好ましく、より好ましくは、同厚みｔの１０〜２０％である。同様の観点から、前記距離ｄ２は、０．１ｍｍ以上であることが好ましく、より好ましくは０．２〜０．３ｍｍである。 As shown in FIG. 2, the fused part 52 is formed at a position separated from both the surfaces 5 a and 5 b of the laminated sheet 5.
The distance d1 (see FIG. 2) from one surface 5a of the laminated sheet 5 to the fused portion 52 is preferably 5% or more of the thickness t of the laminated sheet 5 from the viewpoint of improving the touch of the surface 5a. . Increasing the distance d1 is to increase the separation between the fused part 52 and the surface 5a of the laminated sheet 5, but on the other hand, the thickness d3 of the fused part 52 becomes smaller and denser, and the touch is worsened. Therefore, the distance d1 is more preferably 10 to 20% of the thickness t of the laminated sheet 5. From the same viewpoint, the distance d1 is preferably 0.1 mm or more, and more preferably 0.2 to 0.3 mm.
The distance d2 (see FIG. 2) from the other surface 5b of the laminated sheet 5 to the fused portion 52 is preferably 5% or more of the thickness t of the laminated sheet 5 from the viewpoint of improving the touch of the surface 5b. More preferably, it is 10 to 20% of the same thickness t. From the same viewpoint, the distance d2 is preferably 0.1 mm or more, and more preferably 0.2 to 0.3 mm.

また、融着部５２は、積層シート５の厚み方向における厚みｄ３（図２参照）が、積層シート５の前記厚みｔの３０％以上であることが好ましく、５０〜９０％であることがより好ましい。積層シート５の厚みｔに対する融着部５２の厚みｄ３の割合を上記の範囲とすることにより、シートどうしを融着部５２において一層強固に結合させるとともに肌触り良くすることができる。   Moreover, as for the melt | fusion part 52, it is preferable that the thickness d3 (refer FIG. 2) in the thickness direction of the lamination sheet 5 is 30% or more of the said thickness t of the lamination sheet 5, and it is more preferable that it is 50-90%. preferable. By setting the ratio of the thickness d3 of the fused part 52 to the thickness t of the laminated sheet 5 within the above range, the sheets can be bonded more firmly at the fused part 52 and the touch can be improved.

なお、積層シート５の厚みｔは、貫通孔５１から１０ｍｍ以上離れている部分の厚みを、レーザー変位計などの非接触厚み計で測定する。距離ｄ１、距離ｄ２、融着部５２の厚みｄ３は、積層シートの断面を顕微鏡で撮像し、画像計測で測定することが好ましい。積層シートの切断は、非接触で切断できるようレーザーでカットする方法が好ましい。   In addition, the thickness t of the laminated sheet 5 is measured with a non-contact thickness meter such as a laser displacement meter at a portion that is 10 mm or more away from the through hole 51. The distance d1, the distance d2, and the thickness d3 of the fused part 52 are preferably measured by imaging the cross section of the laminated sheet with a microscope and measuring the image. The cutting of the laminated sheet is preferably a method of cutting with a laser so that it can be cut without contact.

本実施形態の積層シート５は、貫通孔５１の内周面に形成された融着部５２において、該積層シート５を構成するシートの融着により結合一体化しているため、シートどうしの接合強度が高い。   Since the laminated sheet 5 of the present embodiment is united and integrated by fusing the sheets constituting the laminated sheet 5 at the fusion part 52 formed on the inner peripheral surface of the through-hole 51, the bonding strength between the sheets. Is expensive.

しかも、本実施形態の積層シート５は、他の部分に比して硬くなり易い融着部５２が積層シート５の両面５ａ，５ｂの何れの面からも離間した位置に形成されているため、何れの面も肌触りが良好である。そのため、例えば、積層シート５を、サニタリー用品等の肌に当てて使用する製品の肌に当たる面等に使用する場合等における肌触り等が向上する。本発明の積層シート５は、融着部５２が、両面５ａ，５ｂのうちの何れか一方の面からのみ離間したものであっても良い。この場合の積層シートを、サニタリー用品等の肌に当てて使用する製品に用いる場合、融着部５２が表面から離間している方の面を、肌に当たる面側に向けて使用することで、同様に良好な肌触りが得られる。なお、積層シート５において、面５ａは、シート積層体１におけるレーザー光が照射された側の面１ａであり、面５ｂは、その反対側の面である。   And since the lamination sheet 5 of this embodiment is formed in the position where the fusion part 52 which becomes easy to be hard compared with other parts is separated from both sides 5a and 5b of lamination sheet 5, All surfaces have a good touch. Therefore, for example, when the laminated sheet 5 is used on the surface of a product used by being applied to the skin of a sanitary product or the like, the touch or the like is improved. In the laminated sheet 5 of the present invention, the fused portion 52 may be separated from only one of the both surfaces 5a and 5b. When the laminated sheet in this case is used for a product that is applied to the skin such as a sanitary product, by using the surface of the fusion part 52 that is separated from the surface toward the surface that contacts the skin, Similarly, a good touch can be obtained. In the laminated sheet 5, the surface 5 a is the surface 1 a on the side of the sheet laminated body 1 irradiated with the laser light, and the surface 5 b is the opposite surface.

更に、特許文献２に記載されている立体開孔不織布とは異なり、貫通孔５１の開口周縁部が、積層シート５の他方の面５ｂから突出していないので、パンツ型おむつの外装材などの様に両面が肌に触れる可能性があるところに使用することが可能である。   Furthermore, unlike the three-dimensional open nonwoven fabric described in Patent Document 2, the opening peripheral edge of the through-hole 51 does not protrude from the other surface 5b of the laminated sheet 5, so It can be used where there is a possibility that both sides touch the skin.

なお、積層シート５の貫通孔５１の大きさや貫通孔列中の貫通孔５１間の間隔等は、積層シートの用途や積層シートに要求する接合強度等に応じて適宜に決定することができるが、一例を示せば、貫通孔５１の開口面積としては、０．３〜１０ｍｍ2が挙げられる。図２に示すように、積層シートの一方の面５ａ側と他方の面５ｂ側とで、貫通孔５１の開口面積が異なる場合の貫通孔５１の開口面積は、当該開口面積が広い方の面積とする。貫通孔５１の開口面積は、積層シートの厚み方向（Ｚ方向）における融着部５２の端部において測定する。 In addition, although the magnitude | size of the through-hole 51 of the lamination sheet 5, the space | interval between the through-holes 51 in a through-hole row | line | column etc. can be suitably determined according to the joint strength etc. which are requested | required of the use of a lamination sheet. If an example is shown, as an opening area of the through-hole 51, 0.3-10 mm < 2 > will be mentioned. As shown in FIG. 2, the opening area of the through hole 51 when the opening area of the through hole 51 is different between the one surface 5 a side and the other surface 5 b side of the laminated sheet is the area of the wider opening area. And The opening area of the through-hole 51 is measured at the end of the fused part 52 in the thickness direction (Z direction) of the laminated sheet.

本実施形態の積層シート５は、例えば、下記の第１方法又は第２方法により効率良く製造することができる。   The laminated sheet 5 of this embodiment can be efficiently manufactured by the following 1st method or 2nd method, for example.

＜第１方法（レーザーを用いた方法）＞
第１方法においては、図３に示すように、複数枚のシート１１〜１６を重ねて得たシート積層体１の一方の面に、複数の貫通孔３ａが所定のパターンで形成された押さえ部材３を当接させ、その状態のシート積層体１に対して、該押さえ部材３側からレーザー光４を照射して、該シート積層体１に、前述した融着部５２を有する貫通孔５１を形成する。図３中、符号２は、シート積層体１の他方の面を支持する支持体である。 <First method (method using a laser)>
In the first method, as shown in FIG. 3, a pressing member in which a plurality of through holes 3 a are formed in a predetermined pattern on one surface of a sheet laminate 1 obtained by stacking a plurality of sheets 11 to 16. 3, the sheet laminate 1 in that state is irradiated with laser light 4 from the side of the pressing member 3, and the through-hole 51 having the above-described fused portion 52 is formed in the sheet laminate 1. Form. In FIG. 3, reference numeral 2 denotes a support that supports the other surface of the sheet laminate 1.

図３に、第１方法に好ましく用い得るレーザー式接合装置１０を示した。
レーザー式接合装置１０は、図４に示すように、矢印Ａ方向に回転駆動される搬送ロール２と、加圧ベルト３２を備えたベルト式加圧装置３１を備えている。
ベルト式加圧装置３１は、無端状の加圧ベルト３２及び該加圧ベルト３２が架け渡された状態で回転する３本のロール３３ａ，３３ｂ，３３ｃを備えている。ベルト式加圧装置３１の加圧ベルト３２が、レーザー式接合装置１０における押さえ部材３である。
加圧ベルト３２は、ロール３３ａ，３３ｂ，３３ｃの何れか１以上を回転駆動して、搬送ロール２と同速度で移動する。また、搬送ロール２及び加圧ベルト３２は、空冷、水冷等により温度を所定の温度範囲に維持することが好ましい。 FIG. 3 shows a laser-type bonding apparatus 10 that can be preferably used in the first method.
As shown in FIG. 4, the laser-type bonding apparatus 10 includes a belt-type pressure device 31 including a conveyance roll 2 that is rotationally driven in the direction of arrow A and a pressure belt 32.
The belt-type pressure device 31 includes an endless pressure belt 32 and three rolls 33a, 33b, and 33c that rotate in a state where the pressure belt 32 is bridged. The pressure belt 32 of the belt type pressure device 31 is the pressing member 3 in the laser type bonding device 10.
The pressure belt 32 rotates at least one of the rolls 33a, 33b, and 33c and moves at the same speed as the transport roll 2. Moreover, it is preferable that the conveyance roll 2 and the pressure belt 32 maintain temperature in a predetermined temperature range by air cooling, water cooling, or the like.

レーザー式接合装置１０は、加圧ベルト３２と搬送ロール２との間隔を増減調整できる間隔調整機構を有し、当該間隔の調整により、加圧ベルト３２と搬送ロール２とによって、シート積層体１に加える圧力を適宜調整することができる。   The laser-type bonding apparatus 10 includes an interval adjustment mechanism that can increase or decrease the interval between the pressure belt 32 and the conveyance roll 2, and the sheet stack 1 by the pressure belt 32 and the conveyance roll 2 by adjusting the interval. The pressure applied to can be adjusted as appropriate.

シート積層体１は、図示しない案内ロール等によって、搬送ロール２の周面上に導入され、搬送ロール２に巻き掛けられるようにして搬送された後、図示しない導出ロール及びニップロール等によって搬送ロール２の周面から離れる。   The sheet laminate 1 is introduced onto the peripheral surface of the transport roll 2 by a guide roll (not shown) and conveyed so as to be wound around the transport roll 2, and then the transport roll 2 by a lead roll and a nip roll (not shown). Get away from the circumference.

加圧ベルト３２には、金属又は樹脂製のメッシュベルトや、金属又は樹脂製のベルトにエッチングやパンチングにより多数の貫通孔を形成してなる開孔ベルト等が用いられる。押さえ部材３としてのメッシュベルトや開孔ベルトは、貫通孔３ａをレーザー光４が透過する一方、貫通孔３ａ以外の部分３ｂはレーザー光４を透過させない。
搬送ロール２は、その周面がレーザー光４の透過性を有するものであっても良いし、その周面がレーザー光４の透過性を有しないものであっても良い。 As the pressure belt 32, a mesh belt made of metal or resin, an aperture belt formed by forming a large number of through holes by etching or punching on a metal or resin belt, or the like is used. The mesh belt or the aperture belt as the pressing member 3 transmits the laser beam 4 through the through hole 3 a, while the portion 3 b other than the through hole 3 a does not transmit the laser beam 4.
The transport roll 2 may have a peripheral surface that is transparent to the laser light 4 or may have a peripheral surface that is not transparent to the laser light 4.

レーザー式接合装置１０を用いた第１方法においては、複数枚のシートが重ねられたシート積層体１であって、少なくとも一枚のシートが、レーザー光４を吸収して発熱するものを用いる。シート積層体１又はそれから得られる積層シート５は、複数枚のシート１１〜１６のうちの総てが、レーザー光４を吸収して発熱するものであることが好ましい。
なお、レーザー光４で部分的に融着する前のシート積層体１は、層間が全く接合されていないものであっても、融着以外の方法で部分的に接合されているものであっても良い。融着以外の方法で部分的に接合されている態様には、例えば、ホットメルト接着剤等の接着剤により接合されている態様が挙げられる。 In the first method using the laser bonding apparatus 10, a sheet laminated body 1 in which a plurality of sheets are stacked, and at least one sheet generates heat by absorbing the laser beam 4 is used. The sheet laminate 1 or the laminate sheet 5 obtained therefrom is preferably one in which all of the plurality of sheets 11 to 16 absorb the laser beam 4 and generate heat.
The sheet laminate 1 before being partially fused with the laser beam 4 is partially bonded by a method other than fusion, even if the layers are not bonded at all. Also good. Examples of the mode of being partially joined by a method other than fusion include a mode of being joined by an adhesive such as a hot melt adhesive.

レーザー光４は、図３に示すように、シート積層体１の一方の面１ａに押さえ部材３を当接させ、その状態のシート積層体１に対して該押さえ部材３側から照射する。このとき、シート積層体１の他方の面１ｂは、搬送ロール２の外周面に支持されている。
また、レーザー光４を照射する際の、レーザーの出力（照射強度）や照射時間を制御することで、シート積層体１を構成する複数枚のシート１１〜１６の総てを貫通し、且つ内周面に融着部５２を有する貫通孔５１を形成させる。図４中、符号４１は、レーザー光４を照射する照射ヘッド４１であり、押さえ部材３である加圧ベルト３２から所定の距離離間した特定の位置に固定されている。 As shown in FIG. 3, the laser beam 4 makes the pressing member 3 abut on one surface 1a of the sheet laminate 1, and irradiates the sheet stack 1 in this state from the pressing member 3 side. At this time, the other surface 1 b of the sheet laminate 1 is supported by the outer peripheral surface of the transport roll 2.
Further, by controlling the laser output (irradiation intensity) and the irradiation time when irradiating the laser beam 4, all of the plurality of sheets 11 to 16 constituting the sheet laminate 1 are penetrated, and the inside A through hole 51 having a fused portion 52 is formed on the peripheral surface. In FIG. 4, reference numeral 41 denotes an irradiation head 41 that irradiates the laser beam 4, and is fixed at a specific position separated from the pressure belt 32 that is the pressing member 3 by a predetermined distance.

図１に示す積層シート５は、例えば、平面視矩形状の貫通孔が、ＭＤ方向及びＣＤ方向の両方向にそれぞれ多列に形成されたメッシュベルトや開孔ベルトを押さえ部材３として用い、レーザー光４を、ＭＤ方向に直列した貫通孔の１列分の幅で照射して得たものである。この場合、積層シート５の製造時における機械方向（ＭＤ）に、融着部５２を有する貫通孔５１が一列のみ形成されている。これに代えて、レーザー光４を照射する幅を、ＭＤ方向に直列した貫通孔列の２列分の幅や３列分の幅、あるいはそれ以上の幅とし、ＭＤ方向に延びる貫通孔５１が複数列形成された積層シート５を得ることもできる。また、貫通孔が千鳥状に配置された開孔ベルトを用いて、融着部５２を有する貫通孔５１が千鳥状に複数列形成された積層シート５を得ることもできる。   The laminated sheet 5 shown in FIG. 1 uses, as a pressing member 3, a mesh belt or an aperture belt in which through holes having a rectangular shape in plan view are formed in multiple rows in both the MD direction and the CD direction, respectively. 4 was irradiated with a width corresponding to one row of through holes in series in the MD direction. In this case, only one row of through-holes 51 having the fused portions 52 is formed in the machine direction (MD) when the laminated sheet 5 is manufactured. Instead of this, the width of the laser beam 4 is set to the width of two rows of through-hole rows in series in the MD direction, the width of three rows or more, and a through-hole 51 extending in the MD direction is provided. A laminated sheet 5 formed in a plurality of rows can also be obtained. Moreover, the laminated sheet 5 in which the through-holes 51 having the fused portions 52 are formed in a plurality of rows in a staggered manner can be obtained by using an aperture belt in which the through-holes are arranged in a staggered manner.

また、押さえ部材３の貫通孔に対応した配置の貫通孔５１が形成されるようにする観点から、押さえ部材３の個々の貫通孔３ａは、ＭＤ及びＣＤ方向の寸法が、それぞれ２０ｍｍ以下であることが好ましい。また、押さえ部材３の開口率は、４０〜９０％であることが好ましく、より好ましくは６０〜８０％である。   Further, from the viewpoint of forming the through-holes 51 corresponding to the through-holes of the pressing member 3, the individual through-holes 3a of the pressing member 3 each have a dimension in the MD and CD directions of 20 mm or less. It is preferable. Moreover, it is preferable that the opening ratio of the pressing member 3 is 40 to 90%, More preferably, it is 60 to 80%.

レーザー光４の照射は、図３に示すように、押さえ部材３で加圧した状態のシート積層体１に対して行うことが、シートの厚み内に収まる融着部５２を形成させる観点から好ましい。
また、レーザー光４の照射を、図４に示すように、押さえ部材３で加圧して厚み方向に圧縮させた状態のシート積層体１に対して行い、レーザー光の照射後に、押さえ部材３による加圧を解除することも好ましい。シート積層体１が圧縮回復性を有する場合、圧縮状態でレーザー光４の照射を行った後、圧縮状態から解放することで、図２に示すように、シートどうしが融着した融着部５２が、両面５ａ，５ｂから離間した位置に形成された積層シート５を一層容易に得ることができる。 As shown in FIG. 3, the irradiation with the laser beam 4 is preferably performed on the sheet laminate 1 in a state of being pressed by the pressing member 3 from the viewpoint of forming the fused portion 52 that fits within the thickness of the sheet. .
In addition, as shown in FIG. 4, the laser beam 4 is irradiated on the sheet laminate 1 in a state where it is pressed by the pressing member 3 and compressed in the thickness direction. It is also preferable to release the pressure. In the case where the sheet laminate 1 has compression recoverability, after being irradiated with the laser light 4 in a compressed state, the sheet laminated body 1 is released from the compressed state, and as shown in FIG. However, it is possible to more easily obtain the laminated sheet 5 formed at a position separated from the both surfaces 5a and 5b.

シート積層体１に照射するレーザー光が、該シート積層体を構成する個々のシートについて、該シートに吸収されて該シートを発熱させる波長であるか否かは、シートの材質と、使用するレーザー光の波長との関係で決まる。   Whether or not the laser beam applied to the sheet laminate 1 is a wavelength that is absorbed by the sheet and generates heat for the individual sheets constituting the sheet laminate is determined by the material of the sheet and the laser used. It depends on the relationship with the wavelength of light.

シート積層体１が、使い捨ておむつや生理用ナプキン等のサニタリー用品の製造に汎用される合成樹脂製の不織布やフィルムの積層体である場合、レーザーとしては、ＣＯ2レーザー、ＹＡＧレーザー、ＬＤレーザー（半導体レーザー）、ＹＶＯ4レーザー、ファイバーレーザー等を用いることが好ましい。また、シートが、合成樹脂として、ポリエチレン、ポリエチレンテレフタレート、ポリプロピレン等を含む場合、該シートに吸収され該シートを良好に発熱させ得る波長としては、例えば、８．０〜１５μｍを用いることが好ましく、大容量のレーザー装置が存在するＣＯ２レーザーの発振波長の１０．６μｍを用いることが特に好ましい。
例えば、ＣＯ２レーザーの照射の条件として、ＰＥＴやＰＰを主原料とする坪量２０ｇ／ｍ2程度の不織布シート６枚からなる静止した積層シートを融着する場合、積層シートを加圧密着させレーザー出力２１Ｗ以上、走査速度は２５０ｍｍ/秒以下で好ましく融着することが可能である。これらの照射条件はシート積層体の物性値や搬送速度で大きく変化するのでここで示す条件の限りではない。 When the sheet laminate 1 is a laminate of non-woven fabric or film made of synthetic resin that is widely used in the manufacture of sanitary products such as disposable diapers and sanitary napkins, the laser may be a CO 2 laser, YAG laser, LD laser ( (Semiconductor laser), YVO 4 laser, fiber laser or the like is preferably used. Moreover, when the sheet contains polyethylene, polyethylene terephthalate, polypropylene, or the like as a synthetic resin, the wavelength that can be absorbed by the sheet and cause the sheet to generate heat is preferably 8.0 to 15 μm, for example, It is particularly preferable to use 10.6 μm of the oscillation wavelength of a CO 2 laser in which a large-capacity laser device exists.
For example, as a condition for CO2 laser irradiation, when fusing a stationary laminated sheet consisting of six nonwoven fabric sheets with a basis weight of about 20 g / m 2 with PET or PP as the main raw material, the laminated sheet is pressed and adhered. An output of 21 W or more and a scanning speed of 250 mm / second or less can be preferably fused. These irradiation conditions are not limited to the conditions shown here because they vary greatly depending on the physical properties of the sheet laminate and the conveyance speed.

＜第２方法（熱針による穿孔加工）＞
第２方法においては、複数枚のシート１１〜１６が重ねられたシート積層体１に対して、加熱された針（熱針）を突き刺すことにより、該シート積層体１に、前述した融着部５２を有する貫通孔５１を形成する。 <Second method (drilling with a hot needle)>
In the second method, the above-mentioned fused portion is attached to the sheet laminate 1 by piercing a heated needle (heat needle) into the sheet laminate 1 in which a plurality of sheets 11 to 16 are stacked. A through hole 51 having 52 is formed.

図５に、第２方法に好ましく用い得る穿孔加工装置７を示す模式図である。図５に示す穿孔加工装置７は、穿孔加工用の針付ロール７１と、針付ロール７１と対向配置された吸引把持ロール７５とを備え、両ロール７１，７５間に導入したシート積層体１に、針付ロール７１の外周面に突出する熱針７２を突き刺すことにより、該シート積層体１に、融着部５２を有する貫通孔５１を形成するものである。   FIG. 5 is a schematic diagram showing a drilling device 7 that can be preferably used in the second method. The punching device 7 shown in FIG. 5 includes a needle-attached roll 71 for punching and a suction gripping roll 75 disposed opposite to the needle-attached roll 71, and the sheet laminate 1 introduced between the two rolls 71, 75. In addition, a through-hole 51 having a fused portion 52 is formed in the sheet laminate 1 by piercing a thermal needle 72 protruding from the outer peripheral surface of the roll 71 with needle.

針付ロール７１は、内部に収容したヒーターにより加熱可能な金属製のロール本体７３と、ロール本体７３の周囲に筒状に設けられた断熱部７４を有している。熱針７２は、針付ロール７１の周方向に所定の間隔で複数本設けられており、それぞれ、先端が断熱部７４から突出するとともに基端側がロール本体７３内に位置するように固定されている。熱針７２は、ヒーターによる加熱により、所定の温度に加熱可能になされている。
吸引把持ロール７５は、図６に示すように、外周面に吸引孔７６を有しており、導入ロール７７が配置された導入部７５ａから導入されたシート積層体１を、吸引孔７６からの吸引により外周面に吸着保持しながら、熱針７２による穿孔加工部７５ｂまで搬送すると共に、穿孔加工後のシート積層体１ないし積層シート５を、吸引孔７６からの吸引により外周面に吸着保持しながら、導出ロール７８が配置された導出部７５ｃまで搬送可能になされている。
針付ロール７１及び吸引把持ロール７５は、図示しない駆動機構により図中の矢印方向に回転駆動される。図６は、左右方向が、両ロール７１，７５の軸長方向である。 The roll 71 with a needle includes a metal roll body 73 that can be heated by a heater accommodated therein, and a heat insulating portion 74 that is provided in a cylindrical shape around the roll body 73. A plurality of the thermal needles 72 are provided at a predetermined interval in the circumferential direction of the roll 71 with the needle, and each of the thermal needles 72 is fixed so that the distal end protrudes from the heat insulating portion 74 and the proximal end side is positioned in the roll main body 73. Yes. The hot needle 72 can be heated to a predetermined temperature by heating with a heater.
As shown in FIG. 6, the suction gripping roll 75 has a suction hole 76 on the outer peripheral surface, and the sheet laminate 1 introduced from the introduction portion 75 a where the introduction roll 77 is disposed is removed from the suction hole 76. While sucking and holding the outer peripheral surface by suction, the sheet is conveyed to the punching portion 75b by the hot needle 72, and the sheet laminate 1 to the laminated sheet 5 after punching is sucked and held by the suction hole 76 on the outer peripheral surface. However, it can be conveyed to the lead-out portion 75c where the lead-out roll 78 is disposed.
The needle-attached roll 71 and the suction gripping roll 75 are rotationally driven in the direction of the arrow in the figure by a drive mechanism (not shown). In FIG. 6, the left-right direction is the axial length direction of both rolls 71, 75.

上述した穿孔加工装置７によれば、吸引把持ロール７５に吸着保持した状態のシート積層体１に対して熱針７２による穿孔加工を行うことができると共に、穿孔加工後のシート積層体１ないし積層シート５を吸引しつつ搬送することにより、シートが溶融して一体化した部分の固化が、吸引による空冷により促進される。
そのため、融着部５２が、シートの一方の面５ａ又は好ましくは両面５ａ，５ｂから離間した積層シート５を効率よく製造することができる。 According to the punching device 7 described above, punching with the hot needle 72 can be performed on the sheet laminated body 1 in the state of being sucked and held by the suction gripping roll 75, and the sheet laminated body 1 to the laminated body after the punching is laminated. By conveying the sheet 5 while sucking, solidification of the melted and integrated portion of the sheet is promoted by air cooling by suction.
Therefore, it is possible to efficiently manufacture the laminated sheet 5 in which the fused portion 52 is separated from one surface 5a of the sheet, or preferably from both surfaces 5a and 5b.

融着部５２が、シートの一方の面５ａ又は好ましくは両面５ａ，５ｂから離間した積層シート５を効率よく製造する観点等から、熱針７２の温度は、積層シート５を構成するシートの樹脂溶融温度以上であることが好ましく、２００〜３００℃であることがより好ましい。
積層シートを構成するシートの樹脂溶融温度とは、該積層シートが、同一組成の１種類のシートからなる場合は、当該シートの構成繊維の融点であり、該積層シートが、組成の異なる複数種類のシートからなる場合は、当該シートの構成繊維の融点のうち、最も高い温度である。 From the viewpoint of efficiently producing the laminated sheet 5 in which the fused portion 52 is separated from one side 5a of the sheet or preferably from both sides 5a, 5b, etc., the temperature of the hot needle 72 is the resin of the sheet constituting the laminated sheet 5 It is preferable that it is more than a melting temperature, and it is more preferable that it is 200-300 degreeC.
The resin melting temperature of the sheet constituting the laminated sheet is the melting point of the constituent fibers of the sheet when the laminated sheet is composed of one type of sheet having the same composition, and the laminated sheet has a plurality of types having different compositions. Is the highest temperature among the melting points of the constituent fibers of the sheet.

また、針付ロール７１の断熱部７４と吸引把持ロール７５との間のクリアランスＰは、積層シート５の非加圧状態の厚みの８０％以下、特に３０〜７０％であることが、肌触りや溶融部の硬さの面から好ましい。なお、断熱部７４の形成材料としては、断熱ウレタンやグラスウールやロックウール等が挙げられる。   Moreover, the clearance P between the heat insulation part 74 of the roll 71 with a needle | hook and the suction holding | grip roll 75 is 80% or less of the thickness of the non-pressurized state of the lamination sheet 5, especially 30-70%, It is preferable from the viewpoint of the hardness of the molten part. In addition, as a forming material of the heat insulation part 74, heat insulation urethane, glass wool, rock wool, etc. are mentioned.

また、熱針７２による穿孔加工を行う際には、図６に示すように、一部の吸引孔７６ａからの吸引を停止するとともに、その吸引孔７６ａに熱針７２の先端が挿入されるように穿孔加工を行うことが、効率よくかつ積層シートの上面から下面まで強固に接合する点から好ましい。   Further, when drilling with the hot needle 72, as shown in FIG. 6, the suction from a part of the suction holes 76a is stopped and the tip of the hot needle 72 is inserted into the suction holes 76a. It is preferable to perform perforation processing from the viewpoint of efficiently joining firmly from the upper surface to the lower surface of the laminated sheet.

熱針７２の先端が挿入される吸引孔７６の径は、熱針７２の挿入部の径に対し大きくする必要があるが、融着部５２や貫通孔の開口周縁部が、加工後面５ｂ（図６参照）から突出しないようにする観点から、吸引孔７６の径は、熱針７２の径（吸引孔７６に挿入された部分の最大径）に対し、プラス３mm以下であることが望ましい。   Although the diameter of the suction hole 76 into which the tip of the thermal needle 72 is inserted needs to be larger than the diameter of the insertion portion of the thermal needle 72, the fusion peripheral portion 52 and the opening peripheral edge of the through hole are formed on the processed surface 5b ( From the viewpoint of preventing the protrusion from seeing in FIG. 6, the diameter of the suction hole 76 is desirably 3 mm or less with respect to the diameter of the hot needle 72 (the maximum diameter of the portion inserted into the suction hole 76).

また、レーザーによる穿孔加工及び熱針による穿孔加工の何れにおいても、積層シートを加圧して融着することで、実際に使用される非加圧時の積層シートの弾性回復により、より一層有効に溶着部を積層シートの面から離間することができる。   In both drilling with a laser and punching with a hot needle, the laminated sheet is pressurized and fused to make it more effective by restoring the elasticity of the laminated sheet when it is actually used without pressure. The welded portion can be separated from the surface of the laminated sheet.

本発明の積層シートは、そのまま、あるいは他の部材と一体化されて各種の物品として用いることができる。各種の物品としては、例えば、使い捨ておむつや生理用ナプキン、失禁パッド等の吸収性物品や、床面清掃用のシート、身体清拭用のシート等が挙げられる。
例えば、吸収性物品を構成する積層シートとしては、パンツ型使い捨ておむつの外装体における前身頃の両側部に位置する部分と後身頃の両側部に位置する部分とを重ねて部分的に融着したもの、ウイング部付きの生理用ナプキンにおける、表面シートとウイング部形成用シートと裏面シートとを、適宜の順に積層して部分的に融着して一体化したもの、吸収性物品の肌当接面を形成する表面シートと、非肌当接面を形成する裏面シートと、撥水性のサイドシートとを重ねて部分的に融着したもの等が挙げられる。 The laminated sheet of the present invention can be used as various articles as it is or integrated with other members. Examples of various articles include absorbent articles such as disposable diapers, sanitary napkins, and incontinence pads, floor cleaning sheets, body wiping sheets, and the like.
For example, as a laminated sheet constituting an absorbent article, a part located on both sides of the front body and a part located on both sides of the back body of the exterior body of the pants-type disposable diaper are overlapped and partially fused. In a sanitary napkin with a wing part, a top sheet, a wing part forming sheet, and a back sheet are laminated in an appropriate order and partially fused and integrated, skin contact of an absorbent article Examples include a surface sheet that forms a surface, a back sheet that forms a non-skin contact surface, and a water-repellent side sheet that are partially fused together.

シート積層体に含まれて互いに融着されるシートとしては、各種製法による不織布、樹脂フィルム、不織布化されていない繊維ウエブ等が挙げられる。また、厚み方向に隣接する２枚のシートの一方又は双方は、熱可塑性樹脂からなる繊維を含むことが好ましい。熱可塑性樹脂としては、例えば、ポリプロピレン等のポリオレフィン、ポリエチレンテレフタレート等のポリエステル、ポリアミド等が挙げられ、これらの２以上の樹脂からなる複合繊維等を用いることもできる。   Examples of the sheet contained in the sheet laminate and fused together include non-woven fabrics, resin films, and non-woven fabric fiber webs produced by various manufacturing methods. Moreover, it is preferable that one or both of the two sheets adjacent in the thickness direction include fibers made of a thermoplastic resin. Examples of the thermoplastic resin include polyolefin such as polypropylene, polyester such as polyethylene terephthalate, polyamide, and the like, and composite fibers composed of these two or more resins can also be used.

以上、本発明をその一実施形態に基づいて説明したが、本発明は、上述した実施形態に制限されることなく、本発明の趣旨を逸脱しない範囲で適宜変更が可能である。 例えば、シート積層体及び／又は積層シートは、６枚のシートが重ねられたものの他、２枚〜５枚又は７枚以上のシートが重ねられ、それらが貫通孔の内周面に設けられた融着部で結合しているものであっても良い。また、融着されるシートは、シート積層体に含まれる総てのシートであることが好ましい。   As mentioned above, although this invention was demonstrated based on the one embodiment, this invention is not restrict | limited to embodiment mentioned above, In the range which does not deviate from the meaning of this invention, it can change suitably. For example, the sheet laminate and / or the laminate sheet is a laminate of 6 sheets, 2-5 sheets or 7 or more sheets are stacked, and these are provided on the inner peripheral surface of the through hole. It may be bonded at the fusion part. The sheets to be fused are preferably all sheets included in the sheet laminate.

また、上述した実施形態のように、帯状のシート積層体に、連続的にレーザー光を照射するのに変えて、帯状のシート積層体に所定の間隔でレーザー光を照射しても良い。また、シート積層体は帯状でなくても良く、例えば矩形状に切断されたシートを複数枚重ねてシート積層体とし、これに、平板状の押さえ部材を載せて、レーザー光を照射することもできる。この場合、レーザー光の照射点を移動させずにシート積層体を移動させても良いし、シート積層体を移動させずにレーザー光の照射点を移動させることもできる。また、シート積層体１を、押さえ部材３と共に加圧する部材は、上述した実施形態の搬送ロール２のように円柱状の周面を有するものに限られない。   Further, as in the above-described embodiment, instead of continuously irradiating the belt-shaped sheet laminate with laser light, the belt-shaped sheet laminate may be irradiated with laser light at a predetermined interval. Further, the sheet laminate may not be in the form of a belt, for example, a plurality of sheets cut into a rectangular shape may be stacked to form a sheet laminate, and a flat pressing member may be placed on the sheet laminate and irradiated with laser light. it can. In this case, the sheet laminate may be moved without moving the laser light irradiation point, or the laser light irradiation point may be moved without moving the sheet laminate. Moreover, the member which pressurizes the sheet | seat laminated body 1 with the pressing member 3 is not restricted to what has a cylindrical peripheral surface like the conveyance roll 2 of embodiment mentioned above.

上述した一の実施形態における説明省略部分及び一の実施形態のみが有する要件は、それぞれ他の実施形態に適宜適用することができ、また、各実施形態における要件は、適宜、実施形態間で相互に置換可能である。   The description omitted in one embodiment described above and the requirements of only one embodiment can be applied to other embodiments as appropriate, and the requirements in each embodiment can be appropriately changed between the embodiments. Can be substituted.

１ シート積層体
２ 搬送ロール（支持体）
３ 押さえ部材
３ａ 貫通孔
４ レーザー光
５ 積層シート
５ａ 一方の面
５ｂ 他方の面
５１ 貫通孔
５２ 融着部
７ 穿孔加工装置
７１ 針付ロール
７２ 熱針
７３ ロール本体
７４ 断熱部
７５ 吸引把持ロール
１０ レーザー式接合装置 1 Sheet Laminated Body 2 Transport Roll (Support)
DESCRIPTION OF SYMBOLS 3 Pressing member 3a Through-hole 4 Laser beam 5 Laminated sheet 5a One side 5b The other side 51 Through-hole 52 Fusion | bonding part 7 Drilling processing apparatus 71 Roll with needle 72 Hot needle 73 Roll main body 74 Heat insulation part 75 Suction grasping roll 10 Laser Type joining device

Claims (5)

複数枚のシートが積層されて部分的に融着されている積層シートであって、
複数の貫通孔が形成されており、該貫通孔の内周面に、複数枚のシートが融着した融着部が形成されており、
前記融着部は、積層シートの一方の面から離間した位置に形成されており、且つ前記貫通孔の開口周縁部が、該積層シートの他方の面から突出していない、積層シート。 A laminated sheet in which a plurality of sheets are laminated and partially fused,
A plurality of through holes are formed, and a fusion part in which a plurality of sheets are fused is formed on the inner peripheral surface of the through hole,
The fused sheet is a laminated sheet in which the fused part is formed at a position separated from one surface of the laminated sheet, and the opening peripheral edge of the through hole does not protrude from the other surface of the laminated sheet. 前記融着部は、前記積層シートの何れの面からも離間した位置に形成されている、請求項１に記載の積層シート。   The laminated sheet according to claim 1, wherein the fusion part is formed at a position separated from any surface of the laminated sheet. 前記融着部は、前記積層シートの厚み方向における厚みが該積層シートの厚みの３０％以上である、請求項２に記載の積層シート。   The laminated sheet according to claim 2, wherein the fusion part has a thickness in the thickness direction of the laminated sheet of 30% or more of the thickness of the laminated sheet. 前記融着部が、レーザー光の照射により形成されている、請求項１〜３の何れか１項に記載の積層シート。   The laminated sheet according to any one of claims 1 to 3, wherein the fusion part is formed by laser light irradiation. 前記融着部が、複数枚のシートが重ねられたシート積層体に熱針を突き刺して形成されている、請求項１〜３の何れか１項に記載の積層シート。   The laminated sheet according to any one of claims 1 to 3, wherein the fusion part is formed by inserting a hot needle into a sheet laminated body in which a plurality of sheets are stacked.
JP2010260325A 2010-11-22 2010-11-22 Laminated sheet Pending JP2012111076A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2010260325A JP2012111076A (en) 2010-11-22 2010-11-22 Laminated sheet
PCT/JP2011/076511 WO2012070462A1 (en) 2010-11-22 2011-11-17 Method for producing body with fused sheets, and body with fused sheets
CN201180055438.4A CN103221195B (en) 2010-11-22 2011-11-17 The manufacture method of sheet material fusion body and sheet material fusion body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010260325A JP2012111076A (en) 2010-11-22 2010-11-22 Laminated sheet

Publications (1)

Publication Number Publication Date
JP2012111076A true JP2012111076A (en) 2012-06-14

Family

ID=46495821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010260325A Pending JP2012111076A (en) 2010-11-22 2010-11-22 Laminated sheet

Country Status (1)

Country Link
JP (1) JP2012111076A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015008947A (en) * 2013-06-28 2015-01-19 花王株式会社 Underpants type clothing article
CN104822353A (en) * 2012-11-30 2015-08-05 株式会社瑞光 Composite sheet material and disposable wearing article, and method and device for manufacturing composite sheet material
WO2015146704A1 (en) * 2014-03-25 2015-10-01 花王株式会社 Absorbent article
CN105358109A (en) * 2013-06-28 2016-02-24 花王株式会社 Production apparatus and production method for fused sheet
US9642751B2 (en) 2012-05-16 2017-05-09 Kao Corporation Method for manufacturing fused sheets
US9808379B2 (en) 2013-11-01 2017-11-07 Kao Corporation Pants-type wearing article and production method for same
EP3210753A4 (en) * 2014-12-05 2018-03-14 Omron Corporation Mesh manufacturing method and mesh
US10709617B2 (en) 2013-06-28 2020-07-14 Kao Corporation Absorbent article with fusion bonded side seams

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53110683A (en) * 1977-03-08 1978-09-27 Shichirou Asahi Method and apparatus for heat bonding plastics film
JPS55109617A (en) * 1978-11-15 1980-08-23 Windmoeller & Hoelscher Method and device for closing largeesized bag
JPH0288057A (en) * 1988-09-26 1990-03-28 Oji Paper Co Ltd Surface material for sanitary good
JPH08504136A (en) * 1992-11-06 1996-05-07 キンバリー クラーク コーポレイション Fibrous laminated web, method and apparatus for producing the same, and absorbent article incorporating the same
JP2000229327A (en) * 1999-02-12 2000-08-22 Honda Motor Co Ltd Production of panel for vehicle
JP2003517882A (en) * 1999-12-21 2003-06-03 ザ、プロクター、エンド、ギャンブル、カンパニー Disposable articles including perforated laminated webs
JP2004536728A (en) * 2001-07-30 2004-12-09 ザ プロクター アンド ギャンブル カンパニー Multi-layer wiping device
JP2005095209A (en) * 2003-09-22 2005-04-14 Kao Corp Surface sheet of absorbent article
JP2006175689A (en) * 2004-12-22 2006-07-06 Kao Corp Three-dimensional sheet
JP2009518202A (en) * 2005-12-07 2009-05-07 エスセーアー・ハイジーン・プロダクツ・アーベー LAMINATE MATERIAL FOR ABSORBING PRODUCT AND METHOD FOR PRODUCING THE SAME
JP2010195044A (en) * 2009-02-24 2010-09-09 Tredegar Film Products Corp Elastic film laminate with tapered point bond

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53110683A (en) * 1977-03-08 1978-09-27 Shichirou Asahi Method and apparatus for heat bonding plastics film
JPS55109617A (en) * 1978-11-15 1980-08-23 Windmoeller & Hoelscher Method and device for closing largeesized bag
JPH0288057A (en) * 1988-09-26 1990-03-28 Oji Paper Co Ltd Surface material for sanitary good
JPH08504136A (en) * 1992-11-06 1996-05-07 キンバリー クラーク コーポレイション Fibrous laminated web, method and apparatus for producing the same, and absorbent article incorporating the same
JP2000229327A (en) * 1999-02-12 2000-08-22 Honda Motor Co Ltd Production of panel for vehicle
JP2003517882A (en) * 1999-12-21 2003-06-03 ザ、プロクター、エンド、ギャンブル、カンパニー Disposable articles including perforated laminated webs
JP2004536728A (en) * 2001-07-30 2004-12-09 ザ プロクター アンド ギャンブル カンパニー Multi-layer wiping device
JP2005095209A (en) * 2003-09-22 2005-04-14 Kao Corp Surface sheet of absorbent article
JP2006175689A (en) * 2004-12-22 2006-07-06 Kao Corp Three-dimensional sheet
JP2009518202A (en) * 2005-12-07 2009-05-07 エスセーアー・ハイジーン・プロダクツ・アーベー LAMINATE MATERIAL FOR ABSORBING PRODUCT AND METHOD FOR PRODUCING THE SAME
JP2010195044A (en) * 2009-02-24 2010-09-09 Tredegar Film Products Corp Elastic film laminate with tapered point bond

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9642751B2 (en) 2012-05-16 2017-05-09 Kao Corporation Method for manufacturing fused sheets
CN104822353A (en) * 2012-11-30 2015-08-05 株式会社瑞光 Composite sheet material and disposable wearing article, and method and device for manufacturing composite sheet material
US10632028B2 (en) 2012-11-30 2020-04-28 Zuiko Corporation Composite sheet material, disposable wearing article using the same, and production method and production apparatus for composite sheet material
JP2015008947A (en) * 2013-06-28 2015-01-19 花王株式会社 Underpants type clothing article
CN105358109A (en) * 2013-06-28 2016-02-24 花王株式会社 Production apparatus and production method for fused sheet
CN105358109B (en) * 2013-06-28 2018-12-11 花王株式会社 The manufacturing device and manufacturing method of piece fusion body
US10709617B2 (en) 2013-06-28 2020-07-14 Kao Corporation Absorbent article with fusion bonded side seams
US9808379B2 (en) 2013-11-01 2017-11-07 Kao Corporation Pants-type wearing article and production method for same
WO2015146704A1 (en) * 2014-03-25 2015-10-01 花王株式会社 Absorbent article
JP2015192862A (en) * 2014-03-25 2015-11-05 花王株式会社 absorbent article
EP3210753A4 (en) * 2014-12-05 2018-03-14 Omron Corporation Mesh manufacturing method and mesh

Similar Documents

Publication Publication Date Title
JP2012111076A (en) Laminated sheet
WO2012070462A1 (en) Method for producing body with fused sheets, and body with fused sheets
JP5368653B1 (en) Manufacturing method of sheet fusion body
JP7084130B2 (en) Manufacturing method and manufacturing equipment for composite sheets
JP5687732B2 (en) Sheet fusion body manufacturing apparatus and sheet fusion body manufacturing method
JP5989988B2 (en) Absorbent articles
JP5766252B2 (en) Pants-type wearing article and manufacturing method thereof
JP5912431B2 (en) Manufacturing method of sheet fusion body
JP5822278B2 (en) Disposable diapers
RU170415U1 (en) CLOTHING CLOTHING ITEM
JP4824770B2 (en) LAMINATE MATERIAL FOR ABSORBING PRODUCT AND METHOD FOR PRODUCING THE SAME
JP5514536B2 (en) Disposable diapers
WO2014208651A1 (en) Underpants-type disposable nappy
JP6934405B2 (en) Composite sheet manufacturing method and manufacturing equipment
JP7111559B2 (en) Concave-convex sheet manufacturing method
JP2018099793A (en) Method and apparatus for producing composite sheet
WO2003080912A1 (en) Three-dimensional sheet
RU2659888C2 (en) Pant-type disposable diaper and production method for same
JP6159596B2 (en) Pants-type wearing article
CN114728475B (en) Method and apparatus for manufacturing composite sheet, and absorbent article
JP6189109B2 (en) Pants-type wearing article
JP5593124B2 (en) Disposable diapers
JP5414106B2 (en) Method and apparatus for manufacturing body fluid absorbent pad
JP6189110B2 (en) Pants-type wearing article
JP6346024B2 (en) Thermal welding method and manufacturing method of absorbent article

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20131029

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20140924

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20150602