JPS6475211A - Manufacture of film - Google Patents
Manufacture of filmInfo
- Publication number
- JPS6475211A JPS6475211A JP23119887A JP23119887A JPS6475211A JP S6475211 A JPS6475211 A JP S6475211A JP 23119887 A JP23119887 A JP 23119887A JP 23119887 A JP23119887 A JP 23119887A JP S6475211 A JPS6475211 A JP S6475211A
- Authority
- JP
- Japan
- Prior art keywords
- dope
- film
- face
- supporting face
- dram
- 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
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
PURPOSE:To improve productivity of a film whose heat resistance and mechanical physical properties are favorable, by a method wherein an endless belt or a dram is used as a supporting face, and a matter obtained by applying a coating of fluorine resin to a metal is used as the face coming into contact with its dope. CONSTITUTION:An endless belt or a dram is used as a supporting face. At least the face of the supporting face, to which a dope is cast is obtained by applying coating of fluorine resin to a metal. An optically anisotropic dope comprised of poly-(p-phenyleneterephthalic amide) whose logarithmic viscosity is 3.5 01 higher and 95wt.% or more sulfuric acid is cast on the supporting face while holding optical anisotropy as it is. Continuously, after the dope has been transformed to optical isotropy through moisture absorption and/or beating, the same is converted to have optical isotropy, solidified after washing of the same, a film is dried while controlling shrinkage of the film.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23119887A JPS6475211A (en) | 1987-09-17 | 1987-09-17 | Manufacture of film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23119887A JPS6475211A (en) | 1987-09-17 | 1987-09-17 | Manufacture of film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6475211A true JPS6475211A (en) | 1989-03-20 |
Family
ID=16919879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23119887A Pending JPS6475211A (en) | 1987-09-17 | 1987-09-17 | Manufacture of film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6475211A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0380028A2 (en) * | 1989-01-23 | 1990-08-01 | Eastman Kodak Company | Process for the production of low birefringent polymer films |
-
1987
- 1987-09-17 JP JP23119887A patent/JPS6475211A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0380028A2 (en) * | 1989-01-23 | 1990-08-01 | Eastman Kodak Company | Process for the production of low birefringent polymer films |
EP0380028A3 (en) * | 1989-01-23 | 1992-06-03 | Eastman Kodak Company | Process for the production of low birefringent polymer films |
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