JPS5749524A - Manufacture of surface-roughend polypropylene stretched film - Google Patents
Manufacture of surface-roughend polypropylene stretched filmInfo
- Publication number
- JPS5749524A JPS5749524A JP12642980A JP12642980A JPS5749524A JP S5749524 A JPS5749524 A JP S5749524A JP 12642980 A JP12642980 A JP 12642980A JP 12642980 A JP12642980 A JP 12642980A JP S5749524 A JPS5749524 A JP S5749524A
- Authority
- JP
- Japan
- Prior art keywords
- crystal
- polypropylene
- stretched film
- roughend
- sheet
- 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)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE: To manufacture the surface-roughend polypropylene stretched film having no minute void in the inner part by forming specified polypropylene liable to form β crystal into the sheet having the surface layer of α crystal and β crystal mixture and stretching it.
CONSTITUTION: Polypropylene of which fraction of isotactic pendad insoluble in boiling heptane is more than 0.955 and content of soluble part in boiling heptane is less than 9.0wt% is melt-extruded and at least one surface is gradually cooled. Thus, the sheet having the surface in which α crystal and β crystal coexist is made. And the sheet is stretched at least uniaxially. By this, because the minute void is not formed in the inner part of the film, physical and chemical properties are not lowered, then surface-roughend polypropylene stretched film having good stretched film forming property can be manufactured.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12642980A JPS5749524A (en) | 1980-09-10 | 1980-09-10 | Manufacture of surface-roughend polypropylene stretched film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12642980A JPS5749524A (en) | 1980-09-10 | 1980-09-10 | Manufacture of surface-roughend polypropylene stretched film |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5749524A true JPS5749524A (en) | 1982-03-23 |
Family
ID=14934964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12642980A Pending JPS5749524A (en) | 1980-09-10 | 1980-09-10 | Manufacture of surface-roughend polypropylene stretched film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5749524A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0664038A (en) * | 1992-06-19 | 1994-03-08 | New Japan Chem Co Ltd | Stretched beta-crystalline polypropylene film and manufacture thereof |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS491781A (en) * | 1972-05-01 | 1974-01-09 | ||
JPS4998478A (en) * | 1973-01-09 | 1974-09-18 | ||
JPS5235272A (en) * | 1975-09-16 | 1977-03-17 | Mitsubishi Rayon Co | Method of manufacturing translucent polypropylene elongation film |
JPS5342269A (en) * | 1976-09-30 | 1978-04-17 | Honshu Paper Co Ltd | Method of producing stretching polypropylene film |
JPS5346228A (en) * | 1976-10-08 | 1978-04-25 | Canon Inc | Electronic calculator |
JPS5354271A (en) * | 1976-10-28 | 1978-05-17 | Honshu Paper Co Ltd | Method of producing biaxially stretching polypropylene film |
JPS5581125A (en) * | 1978-12-13 | 1980-06-18 | Sumitomo Chem Co Ltd | Drawn polypropylene film |
-
1980
- 1980-09-10 JP JP12642980A patent/JPS5749524A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS491781A (en) * | 1972-05-01 | 1974-01-09 | ||
JPS4998478A (en) * | 1973-01-09 | 1974-09-18 | ||
JPS5235272A (en) * | 1975-09-16 | 1977-03-17 | Mitsubishi Rayon Co | Method of manufacturing translucent polypropylene elongation film |
JPS5342269A (en) * | 1976-09-30 | 1978-04-17 | Honshu Paper Co Ltd | Method of producing stretching polypropylene film |
JPS5346228A (en) * | 1976-10-08 | 1978-04-25 | Canon Inc | Electronic calculator |
JPS5354271A (en) * | 1976-10-28 | 1978-05-17 | Honshu Paper Co Ltd | Method of producing biaxially stretching polypropylene film |
JPS5581125A (en) * | 1978-12-13 | 1980-06-18 | Sumitomo Chem Co Ltd | Drawn polypropylene film |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0664038A (en) * | 1992-06-19 | 1994-03-08 | New Japan Chem Co Ltd | Stretched beta-crystalline polypropylene film and manufacture thereof |
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