JPS5511853A - Injection molded product with improved weld strength - Google Patents

Injection molded product with improved weld strength

Info

Publication number
JPS5511853A
JPS5511853A JP8504378A JP8504378A JPS5511853A JP S5511853 A JPS5511853 A JP S5511853A JP 8504378 A JP8504378 A JP 8504378A JP 8504378 A JP8504378 A JP 8504378A JP S5511853 A JPS5511853 A JP S5511853A
Authority
JP
Japan
Prior art keywords
average molecular
molecular weight
melt index
low density
density polyethylene
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
JP8504378A
Other languages
Japanese (ja)
Other versions
JPS6158284B2 (en
Inventor
Yu Tsukada
Kenichi Mori
Akira Hirata
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.)
Asahi Dow Ltd
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Dow Ltd
Asahi Chemical Industry 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 Asahi Dow Ltd, Asahi Chemical Industry Co Ltd filed Critical Asahi Dow Ltd
Priority to JP8504378A priority Critical patent/JPS5511853A/en
Publication of JPS5511853A publication Critical patent/JPS5511853A/en
Publication of JPS6158284B2 publication Critical patent/JPS6158284B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To improve strength against environmental stress cracks at weld line sections by utilizing a low density polyethylene that has a specific ratio of the weight average molecular weight and the number average molecular weight, and the melt index.
CONSTITUTION: A ratio of the weight average molecular weight and the number average molecular weight for a low density polyethylene is set to be 1.5 to 50 which is evaluated from the gel permeation chromatography; the melt index is 0.5 to 20g per ten minutes. The low density polyethylene is a polyethylene with a density of 0.910 to 0.928 g/cm3 evaluated according to ASTMD1505. If its melt index is less than 0.5, it is not suitable for injection molding because of adverse flow condition; increasing molding temperature for improving the flow condition is not desirable since it accelerates degradation of a resin.
COPYRIGHT: (C)1980,JPO&Japio
JP8504378A 1978-07-14 1978-07-14 Injection molded product with improved weld strength Granted JPS5511853A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8504378A JPS5511853A (en) 1978-07-14 1978-07-14 Injection molded product with improved weld strength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8504378A JPS5511853A (en) 1978-07-14 1978-07-14 Injection molded product with improved weld strength

Publications (2)

Publication Number Publication Date
JPS5511853A true JPS5511853A (en) 1980-01-28
JPS6158284B2 JPS6158284B2 (en) 1986-12-11

Family

ID=13847646

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8504378A Granted JPS5511853A (en) 1978-07-14 1978-07-14 Injection molded product with improved weld strength

Country Status (1)

Country Link
JP (1) JPS5511853A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60193206A (en) * 1984-03-14 1985-10-01 住友電気工業株式会社 Electrically insulating thermally shrinkable tube and connector of power cable using same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1355245A (en) * 1970-05-29 1974-06-05 Mitsui Petrochemical Ind Non-elastic ethylene copolymers and their preparation
JPS51145589A (en) * 1975-05-27 1976-12-14 Naphtachimie Sa Dry polymerization of olefin
JPS5347484A (en) * 1976-10-12 1978-04-27 Mitsui Toatsu Chem Inc Polymerization of ethylene
JPS5437160A (en) * 1977-08-30 1979-03-19 Showa Electric Wire & Cable Co Ltd Fireproof putty
JPS5437160Y2 (en) * 1974-10-02 1979-11-08
JPS5437158Y2 (en) * 1975-04-12 1979-11-08

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1355245A (en) * 1970-05-29 1974-06-05 Mitsui Petrochemical Ind Non-elastic ethylene copolymers and their preparation
JPS5437160Y2 (en) * 1974-10-02 1979-11-08
JPS5437158Y2 (en) * 1975-04-12 1979-11-08
JPS51145589A (en) * 1975-05-27 1976-12-14 Naphtachimie Sa Dry polymerization of olefin
JPS5347484A (en) * 1976-10-12 1978-04-27 Mitsui Toatsu Chem Inc Polymerization of ethylene
JPS5437160A (en) * 1977-08-30 1979-03-19 Showa Electric Wire & Cable Co Ltd Fireproof putty

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60193206A (en) * 1984-03-14 1985-10-01 住友電気工業株式会社 Electrically insulating thermally shrinkable tube and connector of power cable using same
JPH0452562B2 (en) * 1984-03-14 1992-08-24 Sumitomo Electric Industries

Also Published As

Publication number Publication date
JPS6158284B2 (en) 1986-12-11

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