JPS5581125A - Drawn polypropylene film - Google Patents
Drawn polypropylene filmInfo
- Publication number
- JPS5581125A JPS5581125A JP15597378A JP15597378A JPS5581125A JP S5581125 A JPS5581125 A JP S5581125A JP 15597378 A JP15597378 A JP 15597378A JP 15597378 A JP15597378 A JP 15597378A JP S5581125 A JPS5581125 A JP S5581125A
- Authority
- JP
- Japan
- Prior art keywords
- polypropylene
- expansion ratio
- boiling heptane
- polypropylene film
- ratio
- 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 provide a high-rigidity drawn film without need for addition of a reforming agent or for drawing under special conditions, by using polypropylene with specified values of physical properties such as melt expansion ratio as staring material.
CONSTITUTION: A drawn film is produced using polypropylene of which the ratio of isotactic pentad fraction of the boiling heptane-insoluble portion is over 0.955, the content of the boiling heptane-soluble portion is 2.0W9.0wt%, and C in the melt expansion ratio SR=0.12(logMFR)2+0.19logMFR+C is in the range of 1.15W 1.45. The thus obtained film is free from deterioration of optical and electrical properties and is excellent in tensile strength, heat resistance, oil resistance, coefficient of contraction on heating, scratch resistance and the like.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15597378A JPS5581125A (en) | 1978-12-13 | 1978-12-13 | Drawn polypropylene film |
PH23365A PH16274A (en) | 1978-12-13 | 1979-12-04 | Molded products of polypropylene |
AU53638/79A AU531403B2 (en) | 1978-12-13 | 1979-12-10 | Molded products of polypropylene |
CA000341608A CA1158412A (en) | 1978-12-13 | 1979-12-11 | Molded products of polypropylene |
MX180465A MX151064A (en) | 1978-12-13 | 1979-12-12 | IMPROVEMENTS IN PROCEDURE TO OBTAIN PROPER POLYPROPYLENE FOR MOLDING ITEMS |
BR7908103A BR7908103A (en) | 1978-12-13 | 1979-12-12 | MOLDED POLYPROPYLENE PRODUCTS |
DE7979302879T DE2967375D1 (en) | 1978-12-13 | 1979-12-13 | Shaped products of polypropylene |
GB7942977A GB2040302B (en) | 1978-12-13 | 1979-12-13 | Shaped products of polypropylene |
EP19790302879 EP0012605B1 (en) | 1978-12-13 | 1979-12-13 | Shaped products of polypropylene |
US06/103,133 US4283463A (en) | 1978-12-13 | 1979-12-13 | Molded products of polypropylene |
SG52083A SG52083G (en) | 1978-12-13 | 1983-08-19 | Stretched films of polypropylene for electrical insulation |
HK70583A HK70583A (en) | 1978-12-13 | 1983-12-20 | Stretched films of polypropylene for electrical insulation |
MY350/84A MY8400350A (en) | 1978-12-13 | 1984-12-30 | Stretched films of polypropylene for electrical insulation |
US06/927,219 USRE32542E (en) | 1978-12-13 | 1986-11-05 | Molded products of polypropylene |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15597378A JPS5581125A (en) | 1978-12-13 | 1978-12-13 | Drawn polypropylene film |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5581125A true JPS5581125A (en) | 1980-06-18 |
JPS5650853B2 JPS5650853B2 (en) | 1981-12-01 |
Family
ID=15617570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15597378A Granted JPS5581125A (en) | 1978-12-13 | 1978-12-13 | Drawn polypropylene film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5581125A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5747305A (en) * | 1980-09-04 | 1982-03-18 | Sumitomo Chem Co Ltd | Modifying method of polypropylene |
JPS5749524A (en) * | 1980-09-10 | 1982-03-23 | Sumitomo Chem Co Ltd | Manufacture of surface-roughend polypropylene stretched film |
JPS5750418A (en) * | 1980-09-10 | 1982-03-24 | Sumitomo Chemical Co | Oil-immersed electric device |
JPS58163236U (en) * | 1982-04-22 | 1983-10-31 | 東洋紡績株式会社 | Composite polypropylene film or sheet |
JPS61234761A (en) * | 1985-04-11 | 1986-10-20 | Chisso Corp | Laver screen made of high-rigidity polypropylene |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5721861U (en) * | 1980-07-14 | 1982-02-04 | ||
JPS5927346U (en) * | 1982-08-16 | 1984-02-20 | カヤバ工業株式会社 | Shock absorber |
JPS60168970A (en) * | 1984-02-10 | 1985-09-02 | Chugoku Gomme Kogyo Kk | Packing having lip in utilization of shape memory alloy |
JPS6132664U (en) * | 1984-07-31 | 1986-02-27 | 甲南電機株式会社 | seal ring |
-
1978
- 1978-12-13 JP JP15597378A patent/JPS5581125A/en active Granted
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5747305A (en) * | 1980-09-04 | 1982-03-18 | Sumitomo Chem Co Ltd | Modifying method of polypropylene |
JPS6255524B2 (en) * | 1980-09-04 | 1987-11-20 | Sumitomo Chemical Co | |
JPS5749524A (en) * | 1980-09-10 | 1982-03-23 | Sumitomo Chem Co Ltd | Manufacture of surface-roughend polypropylene stretched film |
JPS5750418A (en) * | 1980-09-10 | 1982-03-24 | Sumitomo Chemical Co | Oil-immersed electric device |
JPS631734B2 (en) * | 1980-09-10 | 1988-01-13 | Sumitomo Kagaku Kogyo Kk | |
JPS58163236U (en) * | 1982-04-22 | 1983-10-31 | 東洋紡績株式会社 | Composite polypropylene film or sheet |
JPS6331964Y2 (en) * | 1982-04-22 | 1988-08-25 | ||
JPS61234761A (en) * | 1985-04-11 | 1986-10-20 | Chisso Corp | Laver screen made of high-rigidity polypropylene |
JPS6239991B2 (en) * | 1985-04-11 | 1987-08-26 | Chisso Corp |
Also Published As
Publication number | Publication date |
---|---|
JPS5650853B2 (en) | 1981-12-01 |
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