JPS5690851A - Production of polyamide film - Google Patents
Production of polyamide filmInfo
- 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
Links
Landscapes
- Polyamides (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (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
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62127346A (en) * | 1985-11-26 | 1987-06-09 | Mitsubishi Chem Ind Ltd | Polyamide composition |
-
1979
- 1979-12-24 JP JP16685279A patent/JPS5690851A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62127346A (en) * | 1985-11-26 | 1987-06-09 | Mitsubishi Chem Ind Ltd | Polyamide composition |
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