JPS57126820A - Polyester film and its production - Google Patents

Polyester film and its production

Info

Publication number
JPS57126820A
JPS57126820A JP56011548A JP1154881A JPS57126820A JP S57126820 A JPS57126820 A JP S57126820A JP 56011548 A JP56011548 A JP 56011548A JP 1154881 A JP1154881 A JP 1154881A JP S57126820 A JPS57126820 A JP S57126820A
Authority
JP
Japan
Prior art keywords
films
polyester film
polyester
acid residue
machine axis
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
JP56011548A
Other languages
Japanese (ja)
Other versions
JPH0257091B2 (en
Inventor
Hiroo Inada
Wataru Funakoshi
Yasuji Hirabayashi
Takanori Urasaki
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 JP56011548A priority Critical patent/JPS57126820A/en
Publication of JPS57126820A publication Critical patent/JPS57126820A/en
Publication of JPH0257091B2 publication Critical patent/JPH0257091B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Polyesters Or Polycarbonates (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: A non-oriented polyester film excellent in heat resistance and transparency, prepared by forming a polyester of a specified composition into films under specified conditions.
CONSTITUTION: A substantially non-oriented transparent polyester film having a ratio of the film strength in the direction of the machine axis to that in the rectangular direction to the machine axis, of 2/3W3/2 (at room temperature) and a thermal shrinkage (280°C) of below 2% is obtained by melt-extruding a polyester containing (A) an isophthalic acid residue, (B) a hydroquinone residue and (C) a p-hydroxybenzoic acid residue in amounts satisfying the relationships of formulasIand II, wherein A, B and C are mol numbers of components A, B and C, respectively, into films and winding up the films at a draft of below 10 while quenching the films to below 170°C.
COPYRIGHT: (C)1982,JPO&Japio
JP56011548A 1981-01-30 1981-01-30 Polyester film and its production Granted JPS57126820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56011548A JPS57126820A (en) 1981-01-30 1981-01-30 Polyester film and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56011548A JPS57126820A (en) 1981-01-30 1981-01-30 Polyester film and its production

Publications (2)

Publication Number Publication Date
JPS57126820A true JPS57126820A (en) 1982-08-06
JPH0257091B2 JPH0257091B2 (en) 1990-12-04

Family

ID=11781008

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56011548A Granted JPS57126820A (en) 1981-01-30 1981-01-30 Polyester film and its production

Country Status (1)

Country Link
JP (1) JPS57126820A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162630A (en) * 1982-03-04 1983-09-27 モンサント・カンパニ− Liquid crystal copolyester

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5386798A (en) * 1977-01-11 1978-07-31 Teijin Ltd Polyester film and its production
JPS564626A (en) * 1979-06-25 1981-01-19 Teijin Ltd Polyester film

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5386798A (en) * 1977-01-11 1978-07-31 Teijin Ltd Polyester film and its production
JPS564626A (en) * 1979-06-25 1981-01-19 Teijin Ltd Polyester film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162630A (en) * 1982-03-04 1983-09-27 モンサント・カンパニ− Liquid crystal copolyester

Also Published As

Publication number Publication date
JPH0257091B2 (en) 1990-12-04

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