JPS5690851A - Production of polyamide film - Google Patents

Production of polyamide film

Info

Publication number
JPS5690851A
JPS5690851A JP16685279A JP16685279A JPS5690851A JP S5690851 A JPS5690851 A JP S5690851A JP 16685279 A JP16685279 A JP 16685279A JP 16685279 A JP16685279 A JP 16685279A JP S5690851 A JPS5690851 A JP S5690851A
Authority
JP
Japan
Prior art keywords
film
temp
melting point
polyamide
temperature
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
JP16685279A
Other languages
Japanese (ja)
Inventor
Kazumasa Chiba
Kenji Amijima
Toshio Muraki
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP16685279A priority Critical patent/JPS5690851A/en
Publication of JPS5690851A publication Critical patent/JPS5690851A/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)
  • Polyamides (AREA)

Abstract

PURPOSE: To produce a polyamide film having excellent mechanical properties, dimensional stability and retort resistance, by a method wherein a specified half- aromatic polyamide is melt-extruded into a film and the film is successively biaxially oriented.
CONSTITUTION: A half-aromatic polyamide composed of, as the main structural units, 55W95wt% ε-caprolactum or 6-aminocaproic acid (A), 1W20wt% hexamethylenediamine terephthalate (B) and 0W25wt% hexamethylenediamine adipate (C), is molten by heating and extruded into a film by a T-die. The film is cooled by rollers kept at a temperature not higher than the glass transition point of the polyamide to obtain an unoriented film. Then the film is stretched lengthwise 2W6 times as long at a temp. of not lower than the glass transition point and at least 30°C lower than the melting point between two rollers having different peripheral speeds, and then tentered crosswise 2W6 times as long at a temp. of not lower than the stretching temperature and at least 10°C lower than the melting point. Then the biaxially oriented film is heat-treated at a temp. of not lower than the tentering temperature but not higher than the melting point.
COPYRIGHT: (C)1981,JPO&Japio
JP16685279A 1979-12-24 1979-12-24 Production of polyamide film Pending JPS5690851A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16685279A JPS5690851A (en) 1979-12-24 1979-12-24 Production of polyamide film

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16685279A JPS5690851A (en) 1979-12-24 1979-12-24 Production of polyamide film

Publications (1)

Publication Number Publication Date
JPS5690851A true JPS5690851A (en) 1981-07-23

Family

ID=15838836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16685279A Pending JPS5690851A (en) 1979-12-24 1979-12-24 Production of polyamide film

Country Status (1)

Country Link
JP (1) JPS5690851A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62127346A (en) * 1985-11-26 1987-06-09 Mitsubishi Chem Ind Ltd Polyamide composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62127346A (en) * 1985-11-26 1987-06-09 Mitsubishi Chem Ind Ltd Polyamide composition

Similar Documents

Publication Publication Date Title
US3502766A (en) Process for the improvement of polyamide films
GB1355373A (en) Porous materials derived from tetrafluoroethylene and process for their production
DE69226455D1 (en) Process for the production of foils or films from polypropylene
GB893494A (en) Production of shaped structures, particularly filaments, of synthetic organic linear polymers
JPS5522915A (en) Manufacture of polyester film
JPS54137076A (en) Manufacturing of biaxially oriented thermoplastic polyester film
KR910008035A (en) Thermoplastic resin film and its manufacturing method
ATE148653T1 (en) METHOD FOR PRODUCING POLYPROPYLENE SHEET OR FILM
US4110395A (en) Process for producing polymeric films from crystallizable polyesters
EP0240632A3 (en) Heat-shrinkable biaxially drawn polyamide film and process for preparaton thereof
GB1028945A (en) Manufacture of polypropylene film
JPS5690851A (en) Production of polyamide film
DE2965120D1 (en) Process for the manufacture of flat thermoplastic films having improved dimensional stability
JPS5638216A (en) Polyester formed article and preparation thereof
KR900014480A (en) Biaxially oriented polyester film and its manufacturing method
JPS5824418A (en) Preparation of thermoplastic polyester film
JPS5757630A (en) Manufacture of biaxially drawn polyester film
JPS57103819A (en) Manufacture of biaxially stretched polypropylene film of excellent rigidity and heat-shrinking resistance
JPS5651329A (en) Manufacture of tempered polypropylene film
JPS5674141A (en) Production of polyester film
JPS5741924A (en) Manufacture of laminated and stretched film
JPS5633924A (en) Method of producing polypropylene sheet
KR920007037B1 (en) Forming method for polyester film
KR840005387A (en) Acrylonitrile polymer film and its manufacturing method
JPS5651331A (en) Manufacture of polyester film