JPS557412A - Shock-resistance polystyrene system film with excellent transparency - Google Patents
Shock-resistance polystyrene system film with excellent transparencyInfo
- Publication number
- JPS557412A JPS557412A JP8004678A JP8004678A JPS557412A JP S557412 A JPS557412 A JP S557412A JP 8004678 A JP8004678 A JP 8004678A JP 8004678 A JP8004678 A JP 8004678A JP S557412 A JPS557412 A JP S557412A
- Authority
- JP
- Japan
- Prior art keywords
- film
- extending
- rolls
- shock
- heated
- 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 titled film, by extending a shock-resistance polystyrene system film containing butadiene by means of extending rolls that are heated at fixed temperature and have minute uneven surfaces.
CONSTITUTION: A polystyrene system film, which thickness is 5W1000μ and which has low transparency, is molded by extruding polystyrene containing 5W20 weight % butaniene as raw materials by means of a T die method, etc. The film is heated near extending temperature by means of preheating rolls A, extended 2W7 times as much as the first condition in the one axial direction by means of extending rolls B, which are heated at temperature 105W170°C and which surface roughness is not more than 0.8S, and cooled by means of cooling rolls C, thus winding the film in a roll-like shape.
EFFECT: A minute uneven surface is formed on a surface of the film by means of the extending rolls, and the absorption and reflection of visible rays based on the ununiformity of the surface are decreased, thus improving transparency.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8004678A JPS557412A (en) | 1978-06-30 | 1978-06-30 | Shock-resistance polystyrene system film with excellent transparency |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8004678A JPS557412A (en) | 1978-06-30 | 1978-06-30 | Shock-resistance polystyrene system film with excellent transparency |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS557412A true JPS557412A (en) | 1980-01-19 |
Family
ID=13707291
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8004678A Pending JPS557412A (en) | 1978-06-30 | 1978-06-30 | Shock-resistance polystyrene system film with excellent transparency |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS557412A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6048325A (en) * | 1983-08-26 | 1985-03-16 | Denki Kagaku Kogyo Kk | Thermo-shrinkable monoaxially stretched polystyrene film |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4838777A (en) * | 1971-09-16 | 1973-06-07 | ||
JPS4844666A (en) * | 1971-09-24 | 1973-06-27 | ||
JPS502071A (en) * | 1973-05-08 | 1975-01-10 | ||
JPS50114475A (en) * | 1974-02-22 | 1975-09-08 |
-
1978
- 1978-06-30 JP JP8004678A patent/JPS557412A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4838777A (en) * | 1971-09-16 | 1973-06-07 | ||
JPS4844666A (en) * | 1971-09-24 | 1973-06-27 | ||
JPS502071A (en) * | 1973-05-08 | 1975-01-10 | ||
JPS50114475A (en) * | 1974-02-22 | 1975-09-08 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6048325A (en) * | 1983-08-26 | 1985-03-16 | Denki Kagaku Kogyo Kk | Thermo-shrinkable monoaxially stretched polystyrene film |
JPH0373451B2 (en) * | 1983-08-26 | 1991-11-21 | Denki Kagaku Kogyo Kk |
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