JPS5780027A - Heat-shrinkable film - Google Patents
Heat-shrinkable filmInfo
- Publication number
- JPS5780027A JPS5780027A JP15682880A JP15682880A JPS5780027A JP S5780027 A JPS5780027 A JP S5780027A JP 15682880 A JP15682880 A JP 15682880A JP 15682880 A JP15682880 A JP 15682880A JP S5780027 A JPS5780027 A JP S5780027A
- Authority
- JP
- Japan
- Prior art keywords
- shrinkage ratio
- heat shrinkage
- heat
- lateral
- film
- 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.)
- Granted
Links
Abstract
PURPOSE: To obtain the titled film of excellent anisotropic heat shrinkability, heat sealability and printability, by making twice or more the heat shrinkage ratio at either lateral or longitudinal direction of the polyolefin type film at the specified temperature to the heat shrinkage ratio at another direction.
CONSTITUTION: After the unstretched film obtained by melt-extruding the compound in which various additives (e.g. antistatic agent etc.) are incorporated into copolymer of propylene and C4W10 α-olefin is stretched in each direction so as heat shrinkage ratio of either lateral or longitudinal direction at 120°C is twice or more to heat shrinkage ratio of another direction, preferably 6W12 times in lateral direction at 90W140°C, 1W1.5 times in longitudinal direction at 80W140°C, it is cooled or quenched and further surface activation treatment is ordinarily performed, thus the aimed film is obtained. Also it is preferable that heat shrinkage ratio in lateral direction is made twice or more, ordinarily 3.5W 4 times, i.e. heat shrinkage ratio is made 15W80% in manufacturing viewpoint.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15682880A JPS5780027A (en) | 1980-11-06 | 1980-11-06 | Heat-shrinkable film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15682880A JPS5780027A (en) | 1980-11-06 | 1980-11-06 | Heat-shrinkable film |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5780027A true JPS5780027A (en) | 1982-05-19 |
JPH024411B2 JPH024411B2 (en) | 1990-01-29 |
Family
ID=15636234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15682880A Granted JPS5780027A (en) | 1980-11-06 | 1980-11-06 | Heat-shrinkable film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5780027A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6054843A (en) * | 1983-09-07 | 1985-03-29 | 東レ株式会社 | Label for metallic can |
JPS60127133A (en) * | 1983-12-14 | 1985-07-06 | Sumitomo Chem Co Ltd | Film for shrink package |
JPS6262846A (en) * | 1985-09-13 | 1987-03-19 | Mitsubishi Plastics Ind Ltd | Polypropylene film for shrinkable label |
-
1980
- 1980-11-06 JP JP15682880A patent/JPS5780027A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6054843A (en) * | 1983-09-07 | 1985-03-29 | 東レ株式会社 | Label for metallic can |
JPS60127133A (en) * | 1983-12-14 | 1985-07-06 | Sumitomo Chem Co Ltd | Film for shrink package |
JPH0433619B2 (en) * | 1983-12-14 | 1992-06-03 | Sumitomo Chemical Co | |
JPS6262846A (en) * | 1985-09-13 | 1987-03-19 | Mitsubishi Plastics Ind Ltd | Polypropylene film for shrinkable label |
JPH0546304B2 (en) * | 1985-09-13 | 1993-07-13 | Mitsubishi Plastics Ind |
Also Published As
Publication number | Publication date |
---|---|
JPH024411B2 (en) | 1990-01-29 |
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