JPS5461269A - Production of drawn thermoplastic resin film - Google Patents

Production of drawn thermoplastic resin film

Info

Publication number
JPS5461269A
JPS5461269A JP12828277A JP12828277A JPS5461269A JP S5461269 A JPS5461269 A JP S5461269A JP 12828277 A JP12828277 A JP 12828277A JP 12828277 A JP12828277 A JP 12828277A JP S5461269 A JPS5461269 A JP S5461269A
Authority
JP
Japan
Prior art keywords
thermoplastic resin
temperature
drawn
film
resin film
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
JP12828277A
Other languages
Japanese (ja)
Inventor
Kazuo Matsukura
Masaki Ohora
Kunio Murakami
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.)
Unitika Ltd
Original Assignee
Unitika 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 Unitika Ltd filed Critical Unitika Ltd
Priority to JP12828277A priority Critical patent/JPS5461269A/en
Publication of JPS5461269A publication Critical patent/JPS5461269A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE: To obtain a drawn film capable of preventing the central part of the film from bow drawing lagging behind the ends, by selecting the drawing temperature in the biaxial drawing of a thermoplastic resin film as a specific value depending on the draw ratio of the uniaxial drawing.
CONSTITUTION: A uniaxially drawn thermoplastic resin film which is drawn at a draw ratio ≥ 1.1 in the longitudinal and lateral directions at a drawing temperature above the glass transition temperature of the thermoplastic resin by the tentering method. The preheating temperature Y(°C) immediately before the drawing is set at the following temperature: Y ≥ T+ 5A [T is the drawing temperature (°C); A is the uniaxial draw ratio]. High-density polyethylene, polypropylene, polyester, polyamide, etc. may be cited as the film material
COPYRIGHT: (C)1979,JPO&Japio
JP12828277A 1977-10-25 1977-10-25 Production of drawn thermoplastic resin film Pending JPS5461269A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12828277A JPS5461269A (en) 1977-10-25 1977-10-25 Production of drawn thermoplastic resin film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12828277A JPS5461269A (en) 1977-10-25 1977-10-25 Production of drawn thermoplastic resin film

Publications (1)

Publication Number Publication Date
JPS5461269A true JPS5461269A (en) 1979-05-17

Family

ID=14980960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12828277A Pending JPS5461269A (en) 1977-10-25 1977-10-25 Production of drawn thermoplastic resin film

Country Status (1)

Country Link
JP (1) JPS5461269A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3124290A1 (en) * 1980-06-20 1982-05-13 Mitsubishi Petrochemical Co., Ltd., Tokyo Process for producing a biaxially oriented polypropylene film and film produced according to this process

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230876A (en) * 1975-06-25 1977-03-08 Unilever Nv Method of improving property of thermoplastic films

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230876A (en) * 1975-06-25 1977-03-08 Unilever Nv Method of improving property of thermoplastic films

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3124290A1 (en) * 1980-06-20 1982-05-13 Mitsubishi Petrochemical Co., Ltd., Tokyo Process for producing a biaxially oriented polypropylene film and film produced according to this process

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