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JPS5741922A - Lateral stretching of film - Google Patents

Lateral stretching of film

Info

Publication number
JPS5741922A
JPS5741922A JP11807680A JP11807680A JPS5741922A JP S5741922 A JPS5741922 A JP S5741922A JP 11807680 A JP11807680 A JP 11807680A JP 11807680 A JP11807680 A JP 11807680A JP S5741922 A JPS5741922 A JP S5741922A
Authority
JP
Japan
Prior art keywords
film
pulley
stretched
shape
pulleys
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
JP11807680A
Other languages
Japanese (ja)
Inventor
Masahide Yazawa
Shigezo Kojima
Haruhisa Tani
Kazuhiko Kurihara
Hiroshi Yazawa
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.)
KOBUNSHI KAKO KENKYUSHO
KOUBUNSHI KAKOU KENKYUSHO KK
Polymer Processing Research Institute Ltd
Original Assignee
KOBUNSHI KAKO KENKYUSHO
KOUBUNSHI KAKOU KENKYUSHO KK
Polymer Processing Research Institute Ltd
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 KOBUNSHI KAKO KENKYUSHO, KOUBUNSHI KAKOU KENKYUSHO KK, Polymer Processing Research Institute Ltd filed Critical KOBUNSHI KAKO KENKYUSHO
Priority to JP11807680A priority Critical patent/JPS5741922A/en
Publication of JPS5741922A publication Critical patent/JPS5741922A/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
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation

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 operate lateral stretching of a film maintaining its length direction in a constant state and obtain a uniformly stretched film by making a direction transfer line of the U shape stretching path which pinches the edge of film by the pulley and the belt along the tangential line adjacent to the lowest part of the pulley. CONSTITUTION:The right and left edges of the twice folded tubular film 10 are fed via the nip rollers 9, 9' to the pulleys 2, 2' of the same shape and size which rotate reversely each other on a same plane, and are pinched by the pulleys and the circulating belts 7, 8, 7', 8'. When two sheets of obverse and reverse films are stretched along the U shape paths of the lower semicircular part of the pulley respectively, heating and pressing fluid is blown out from the opening holes 17, 17' at the tips of the fishtail tube 15, 15' which are arranged tangentially to the lowest end of the pulley. The film, being stretched, changes its direction smoothly by lubricating flow of blown out fluid following the U shape paths and is stretched laterally, maintaining a constant state longitudinally. Thus, uniformly stretched film 19 is obtained.
JP11807680A 1980-08-26 1980-08-26 Lateral stretching of film Pending JPS5741922A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11807680A JPS5741922A (en) 1980-08-26 1980-08-26 Lateral stretching of film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11807680A JPS5741922A (en) 1980-08-26 1980-08-26 Lateral stretching of film

Publications (1)

Publication Number Publication Date
JPS5741922A true JPS5741922A (en) 1982-03-09

Family

ID=14727398

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11807680A Pending JPS5741922A (en) 1980-08-26 1980-08-26 Lateral stretching of film

Country Status (1)

Country Link
JP (1) JPS5741922A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5761528A (en) * 1980-10-01 1982-04-14 Kobe Steel Ltd Stretching device of plastic film etc.
JPS57163532A (en) * 1981-04-01 1982-10-07 Polymer Processing Res Inst Method for orienting film to traverse direction mainly
EP0688665A2 (en) 1994-06-20 1995-12-27 Nippon Petrochemicals Company, Limited Composite material with controlled elasticity

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55101424A (en) * 1979-01-29 1980-08-02 Polymer Processing Res Inst Production of oriented weft web by tubularly formed fibrous material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55101424A (en) * 1979-01-29 1980-08-02 Polymer Processing Res Inst Production of oriented weft web by tubularly formed fibrous material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5761528A (en) * 1980-10-01 1982-04-14 Kobe Steel Ltd Stretching device of plastic film etc.
JPS6343215B2 (en) * 1980-10-01 1988-08-29 Kobe Steel Ltd
JPS57163532A (en) * 1981-04-01 1982-10-07 Polymer Processing Res Inst Method for orienting film to traverse direction mainly
EP0688665A2 (en) 1994-06-20 1995-12-27 Nippon Petrochemicals Company, Limited Composite material with controlled elasticity

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