JPS5651331A - Manufacture of polyester film - Google Patents
Manufacture of polyester filmInfo
- Publication number
- JPS5651331A JPS5651331A JP12829679A JP12829679A JPS5651331A JP S5651331 A JPS5651331 A JP S5651331A JP 12829679 A JP12829679 A JP 12829679A JP 12829679 A JP12829679 A JP 12829679A JP S5651331 A JPS5651331 A JP S5651331A
- Authority
- JP
- Japan
- Prior art keywords
- film
- stretched
- crystallization
- melted
- extruded
- 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 obtain the polyester film with less uneven thickness at high speed by a method in which polyethylene terephthalate is melted and extruded into a film, stretched at a specific temperature while controlling its orientation and crystallization, and then biaxially stretched.
CONSTITUTION: A polyester resin composed mainly of polyethylene terephthalate is melted and extruded through a linear die 1 into the resin film 2 which is, in turn, closely contacted with the cooling roll 3 rotating at a fixed speed to cool it to 95°C or lower, preferably 60W95°C. Then, the film is sent to a heating roll 4 with a nonadhesive surface to raise its temperature to 120W150°C, stretched 1W1.2 times longitudinally while suppressing its orientation and crystallization, and then biaxially stretched.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12829679A JPS5651331A (en) | 1979-10-03 | 1979-10-03 | Manufacture of polyester film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12829679A JPS5651331A (en) | 1979-10-03 | 1979-10-03 | Manufacture of polyester film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5651331A true JPS5651331A (en) | 1981-05-08 |
Family
ID=14981284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12829679A Pending JPS5651331A (en) | 1979-10-03 | 1979-10-03 | Manufacture of polyester film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5651331A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62158026A (en) * | 1986-01-07 | 1987-07-14 | Toray Ind Inc | Heating of film made of thermoplastic resin |
| JPS6382341A (en) * | 1986-09-27 | 1988-04-13 | Shimadzu Corp | Indentation hardness test method and apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825074A (en) * | 1971-08-05 | 1973-04-02 | ||
| JPS5075A (en) * | 1973-04-28 | 1975-01-06 | ||
| JPS50136365A (en) * | 1974-04-17 | 1975-10-29 | ||
| JPS548672A (en) * | 1977-06-21 | 1979-01-23 | Toray Ind Inc | Production of polyester film |
| JPS5456674A (en) * | 1977-10-12 | 1979-05-07 | Daiafoil | Method of making polyester film |
-
1979
- 1979-10-03 JP JP12829679A patent/JPS5651331A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825074A (en) * | 1971-08-05 | 1973-04-02 | ||
| JPS5075A (en) * | 1973-04-28 | 1975-01-06 | ||
| JPS50136365A (en) * | 1974-04-17 | 1975-10-29 | ||
| JPS548672A (en) * | 1977-06-21 | 1979-01-23 | Toray Ind Inc | Production of polyester film |
| JPS5456674A (en) * | 1977-10-12 | 1979-05-07 | Daiafoil | Method of making polyester film |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62158026A (en) * | 1986-01-07 | 1987-07-14 | Toray Ind Inc | Heating of film made of thermoplastic resin |
| JPS6382341A (en) * | 1986-09-27 | 1988-04-13 | Shimadzu Corp | Indentation hardness test method and apparatus |
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