JPS5772820A - Production of biaxially stretched polyester film - Google Patents

Production of biaxially stretched polyester film

Info

Publication number
JPS5772820A
JPS5772820A JP14814380A JP14814380A JPS5772820A JP S5772820 A JPS5772820 A JP S5772820A JP 14814380 A JP14814380 A JP 14814380A JP 14814380 A JP14814380 A JP 14814380A JP S5772820 A JPS5772820 A JP S5772820A
Authority
JP
Japan
Prior art keywords
film
heat
biaxially stretched
aromatic polyester
polyester 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.)
Granted
Application number
JP14814380A
Other languages
Japanese (ja)
Other versions
JPS6349611B2 (en
Inventor
Takanori Urasaki
Kazushi Yoshida
Hiroo Inada
Yasuji Hirabayashi
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP14814380A priority Critical patent/JPS5772820A/en
Priority to US06/286,855 priority patent/US4436894A/en
Priority to EP81106037A priority patent/EP0045499B1/en
Priority to DE8181106037T priority patent/DE3173976D1/en
Publication of JPS5772820A publication Critical patent/JPS5772820A/en
Publication of JPS6349611B2 publication Critical patent/JPS6349611B2/ja
Granted 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 film having a low heat shrinkage factor and an excellent heat resistance by a method wherein a totally aromatic polyester film is subjected to biaxial stretching and heat shrinkage under specified conditions. CONSTITUTION:A film of a melt-formable totally aromatic polyester containing the isophthalic acid residue and the hydroquinone esidue as major components is biaxially stretched at 180-280 deg.C, then it is heat set at a temperature of not lower than 250 deg.C but lower than the melting point of the aromatic polyester by at least 20 deg.C, and the heat-set film is subjected to a heat shrinkage of at least 1% at a temperature of not lower than 200 deg.C but below the heat setting temperature. Accordingly, a biaxially stretched totally aromatic polyester film having a low heat shrinkage factor and an excellent heat resistance can be produced.
JP14814380A 1980-07-31 1980-10-24 Production of biaxially stretched polyester film Granted JPS5772820A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP14814380A JPS5772820A (en) 1980-10-24 1980-10-24 Production of biaxially stretched polyester film
US06/286,855 US4436894A (en) 1980-07-31 1981-07-27 Novel wholly aromatic copolyester, process for production thereof, and film melt-shaped therefrom
EP81106037A EP0045499B1 (en) 1980-07-31 1981-07-31 Novel wholly aromatic copolyester, process for production thereof, and film melt-shaped therefrom
DE8181106037T DE3173976D1 (en) 1980-07-31 1981-07-31 Novel wholly aromatic copolyester, process for production thereof, and film melt-shaped therefrom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14814380A JPS5772820A (en) 1980-10-24 1980-10-24 Production of biaxially stretched polyester film

Publications (2)

Publication Number Publication Date
JPS5772820A true JPS5772820A (en) 1982-05-07
JPS6349611B2 JPS6349611B2 (en) 1988-10-05

Family

ID=15446223

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14814380A Granted JPS5772820A (en) 1980-07-31 1980-10-24 Production of biaxially stretched polyester film

Country Status (1)

Country Link
JP (1) JPS5772820A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6258378A (en) * 1985-09-06 1987-03-14 Fujitsu Ltd High-speed converting system for color data

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6258378A (en) * 1985-09-06 1987-03-14 Fujitsu Ltd High-speed converting system for color data

Also Published As

Publication number Publication date
JPS6349611B2 (en) 1988-10-05

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