JPS5565522A - Stretching of thermoplastic resin - Google Patents
Stretching of thermoplastic resinInfo
- Publication number
- JPS5565522A JPS5565522A JP13812678A JP13812678A JPS5565522A JP S5565522 A JPS5565522 A JP S5565522A JP 13812678 A JP13812678 A JP 13812678A JP 13812678 A JP13812678 A JP 13812678A JP S5565522 A JPS5565522 A JP S5565522A
- Authority
- JP
- Japan
- Prior art keywords
- film
- stretching
- width
- heater
- thermoplastic resin
- 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
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE: To improve final appearance of a product by generating temperature spots in arbitrary portions along the width of a thermoplastic resin film and thereby make the film thickness irregular and then stretching the film.
CONSTITUTION: A thermoplastic resin film such as of polyester resin or polyamid resin which has been fusion extruded in stretched uniaxially in lateral direction or biaxially in lateral and longitudinal directions by the tenter method. In this case, a heater or cooler travellable at an arbitrary speed along the width of the film is arranged, in addition to a normal heater, in a stretching zone or preheating zone. Air at a temperature higher or lower than that of the normal heating hot air by about 20°C is blown off from the heater or cooler, to generate irregular temperature spots in arbitrary portions along the width of the film and thereby to make irregular the thickness of the film after stretching.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13812678A JPS5565522A (en) | 1978-11-08 | 1978-11-08 | Stretching of thermoplastic resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13812678A JPS5565522A (en) | 1978-11-08 | 1978-11-08 | Stretching of thermoplastic resin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5565522A true JPS5565522A (en) | 1980-05-17 |
Family
ID=15214574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13812678A Pending JPS5565522A (en) | 1978-11-08 | 1978-11-08 | Stretching of thermoplastic resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5565522A (en) |
-
1978
- 1978-11-08 JP JP13812678A patent/JPS5565522A/en active Pending
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