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JPS5581125A - Drawn polypropylene film - Google Patents

Drawn polypropylene film

Info

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
Application number
JP15597378A
Other languages
Japanese (ja)
Other versions
JPS5650853B2 (en
Inventor
Akinobu Shiga
Noriyoshi Matsuyama
Masahiro Kakugo
Yukio Naito
Seiichiro Kon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP15597378A priority Critical patent/JPS5581125A/en
Priority to PH23365A priority patent/PH16274A/en
Priority to AU53638/79A priority patent/AU531403B2/en
Priority to CA000341608A priority patent/CA1158412A/en
Priority to MX180465A priority patent/MX151064A/en
Priority to BR7908103A priority patent/BR7908103A/en
Priority to EP19790302879 priority patent/EP0012605B1/en
Priority to US06/103,133 priority patent/US4283463A/en
Priority to GB7942977A priority patent/GB2040302B/en
Priority to DE7979302879T priority patent/DE2967375D1/en
Publication of JPS5581125A publication Critical patent/JPS5581125A/en
Publication of JPS5650853B2 publication Critical patent/JPS5650853B2/ja
Priority to SG52083A priority patent/SG52083G/en
Priority to HK70583A priority patent/HK70583A/en
Priority to MY350/84A priority patent/MY8400350A/en
Priority to US06/927,219 priority patent/USRE32542E/en
Granted legal-status Critical Current

Links

Landscapes

  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

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
JP15597378A 1978-12-13 1978-12-13 Drawn polypropylene film Granted JPS5581125A (en)

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
US06/103,133 US4283463A (en) 1978-12-13 1979-12-13 Molded products of polypropylene
EP19790302879 EP0012605B1 (en) 1978-12-13 1979-12-13 Shaped products of polypropylene
GB7942977A GB2040302B (en) 1978-12-13 1979-12-13 Shaped products of polypropylene
DE7979302879T DE2967375D1 (en) 1978-12-13 1979-12-13 Shaped 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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (9)

* Cited by examiner, † Cited by third party
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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