JPS5617228A - Folding method for inflated film - Google Patents

Folding method for inflated film

Info

Publication number
JPS5617228A
JPS5617228A JP9319679A JP9319679A JPS5617228A JP S5617228 A JPS5617228 A JP S5617228A JP 9319679 A JP9319679 A JP 9319679A JP 9319679 A JP9319679 A JP 9319679A JP S5617228 A JPS5617228 A JP S5617228A
Authority
JP
Japan
Prior art keywords
film
soft sheet
undergone
slit
folded
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
JP9319679A
Other languages
Japanese (ja)
Inventor
Sumio Goto
Toshio Taka
Hideaki Toda
Hisashi Hatano
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.)
Resonac Holdings Corp
Original Assignee
Showa Denko KK
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 Showa Denko KK filed Critical Showa Denko KK
Priority to JP9319679A priority Critical patent/JPS5617228A/en
Publication of JPS5617228A publication Critical patent/JPS5617228A/en
Pending legal-status Critical Current

Links

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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE:To obtain a film free of sag and wrinkle by a method wherein the inflated film of thermoplastic resin having undergone bubble forming is folded while being kept in contact with the inside surface of a cylindrica body of soft sheet and then taken up through a slit. CONSTITUTION:A tubular film 1 having undergone bubble forming is folded into flat shape while being kept in contact with the inside surface of a cylindrical body 3 of soft sheet the top end thereof is suspended by a folding device 2 consisting of two flat plates capable of opening and closing freely. It is necessary that the soft sheet can deform in correspondence with the folding action. The length of the cylindrical body 3 is preferably 2-5 times as large at the flat width of the tubular film 1, and the gap of a slit 4 of the folding device 2 is preferably 10-50mm..
JP9319679A 1979-07-24 1979-07-24 Folding method for inflated film Pending JPS5617228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9319679A JPS5617228A (en) 1979-07-24 1979-07-24 Folding method for inflated film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9319679A JPS5617228A (en) 1979-07-24 1979-07-24 Folding method for inflated film

Publications (1)

Publication Number Publication Date
JPS5617228A true JPS5617228A (en) 1981-02-19

Family

ID=14075818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9319679A Pending JPS5617228A (en) 1979-07-24 1979-07-24 Folding method for inflated film

Country Status (1)

Country Link
JP (1) JPS5617228A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6135227A (en) * 1984-07-27 1986-02-19 Showa Denko Kk Folding guide of inflation film
CN107283799A (en) * 2015-12-23 2017-10-24 黄如辛 One kind prepares compound art post paperboard using inflation film manufacturing machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6135227A (en) * 1984-07-27 1986-02-19 Showa Denko Kk Folding guide of inflation film
JPH0548170B2 (en) * 1984-07-27 1993-07-20 Showa Denko Kk
CN107283799A (en) * 2015-12-23 2017-10-24 黄如辛 One kind prepares compound art post paperboard using inflation film manufacturing machine

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