JPS6472829A - Preparation of single surface mat polycarbonate film - Google Patents
Preparation of single surface mat polycarbonate filmInfo
- Publication number
- JPS6472829A JPS6472829A JP22856287A JP22856287A JPS6472829A JP S6472829 A JPS6472829 A JP S6472829A JP 22856287 A JP22856287 A JP 22856287A JP 22856287 A JP22856287 A JP 22856287A JP S6472829 A JPS6472829 A JP S6472829A
- Authority
- JP
- Japan
- Prior art keywords
- polycarbonate
- film
- guide roll
- mat
- matted
- 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 Of Tube Ends By Bending Or Straightening (AREA)
Abstract
PURPOSE:To obtain a single surface mat polycarbonate film, by pressing polycarbonate extruded under melting to a matted cooling roll, whose surface roughness in the directions parallel and vertical to the surface thereof is specific, under specific line pressure by a guide roll through a release film having heat resistance and a smooth surface while setting the temp. of polycarbonate to a specific value. CONSTITUTION:The molten polycarbonate 3 extruded from an extrusion die 4 is guided between a matted cooling roll 1 and a guide roll 2 within a resin temp. range of 170-200 deg.C and extruded under line pressure of 1-5kg/cm by the guide roll 2 through a release film having a smooth surface such as a heat resistant PET film. The molten polycarbonate on the side of the guide roll 2 receives pressure in a semi-molten state to erase die lines and the mirror surface of the surface smooth film is transferred to said polycarbonate. The molten polycarbonate brought into contact with the matted cooling roll 1 receives the transfer of a mat surface to be cooled. By this method, a good single surface mat polycarbonate film can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22856287A JPS6472829A (en) | 1987-09-14 | 1987-09-14 | Preparation of single surface mat polycarbonate film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22856287A JPS6472829A (en) | 1987-09-14 | 1987-09-14 | Preparation of single surface mat polycarbonate film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6472829A true JPS6472829A (en) | 1989-03-17 |
Family
ID=16878312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22856287A Pending JPS6472829A (en) | 1987-09-14 | 1987-09-14 | Preparation of single surface mat polycarbonate film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6472829A (en) |
-
1987
- 1987-09-14 JP JP22856287A patent/JPS6472829A/en active Pending
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