JPS6472831A - Preparation of polycarbonate mat film - Google Patents
Preparation of polycarbonate mat filmInfo
- Publication number
- JPS6472831A JPS6472831A JP22855987A JP22855987A JPS6472831A JP S6472831 A JPS6472831 A JP S6472831A JP 22855987 A JP22855987 A JP 22855987A JP 22855987 A JP22855987 A JP 22855987A JP S6472831 A JPS6472831 A JP S6472831A
- Authority
- JP
- Japan
- Prior art keywords
- polycarbonate
- mat
- roll
- cooling
- specific
- 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 good mat film, by pressing polycarbonate extruded under melting under specific line pressure at specific temp. using a cooling mat roll whose surface roughnesses in the directions parallel and vertical to the surface thereof are specific and a guide roll made of heat resistant silicone having the same surface roughness and specific surface hardness. CONSTITUTION:The molten polycarbonate extruded from an extrusion die 4 is guided between a cooling mat roll 1 and a polished matted guide roll 2 made of hard silicone rubber set to a line pressure range of 1-5kg/cm within a resin temp. range of 170-200 deg.C. The molten polycarbonate on the side of the guide roll 2 receives pressure in a semi-molten state to erase die lines and the surface mat pattern of the guide roll 2 is transferred to said polycarbonate. The molten polycarbonate brought into contact with the cooling roll 1 receives the transfer of the mat surface of the cooling roll and cooled. By this method, a polycarbonate mat film having good matted surfaces on both sides thereof is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22855987A JPS6472831A (en) | 1987-09-14 | 1987-09-14 | Preparation of polycarbonate mat film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22855987A JPS6472831A (en) | 1987-09-14 | 1987-09-14 | Preparation of polycarbonate mat film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6472831A true JPS6472831A (en) | 1989-03-17 |
Family
ID=16878272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22855987A Pending JPS6472831A (en) | 1987-09-14 | 1987-09-14 | Preparation of polycarbonate mat film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6472831A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017144654A (en) * | 2016-02-18 | 2017-08-24 | 信越ポリマー株式会社 | Method of manufacturing resin film for film capacitor |
-
1987
- 1987-09-14 JP JP22855987A patent/JPS6472831A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017144654A (en) * | 2016-02-18 | 2017-08-24 | 信越ポリマー株式会社 | Method of manufacturing resin film for film capacitor |
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