JPS57202327A - Crosslinked polyethylene foam sheet - Google Patents

Crosslinked polyethylene foam sheet

Info

Publication number
JPS57202327A
JPS57202327A JP8569981A JP8569981A JPS57202327A JP S57202327 A JPS57202327 A JP S57202327A JP 8569981 A JP8569981 A JP 8569981A JP 8569981 A JP8569981 A JP 8569981A JP S57202327 A JPS57202327 A JP S57202327A
Authority
JP
Japan
Prior art keywords
moldability
toughness
olefin
ethylene
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
JP8569981A
Other languages
Japanese (ja)
Other versions
JPH0257578B2 (en
Inventor
Toshihiro Yamane
Isamu Tamai
Shunji Okubo
Koji Sugawara
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.)
Mitsui Petrochemical Industries Ltd
Toray Industries Inc
Original Assignee
Mitsui Petrochemical Industries Ltd
Toray Industries Inc
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 Mitsui Petrochemical Industries Ltd, Toray Industries Inc filed Critical Mitsui Petrochemical Industries Ltd
Priority to JP8569981A priority Critical patent/JPS57202327A/en
Publication of JPS57202327A publication Critical patent/JPS57202327A/en
Publication of JPH0257578B2 publication Critical patent/JPH0257578B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE: To obtain the titled foamed article having improved toughness and moldability, composed essentially of a polyethylene having the coefficients representing the toughness and the moldability of higher than specific levels and having a specific gel fraction, and applicable even to the field requiring high performance.
CONSTITUTION: A copolymer of ethylene and preferably a 5W20C α-olefin (e.g. 1-butene) having a melt flow rate of preferably 0.5W20g/10min, a density of 0.915W0.935g/cm3 and a melting point of 115W127°C, and obtained by the medium- or low-pressure polymerization process is mixed with a decomposition-type foaming agent (preferably an azodicarbonamide having a decomposition point of ≥196°C), to obtain the objective foamed article composed of a polyethylene having the toughness coefficient (r) of the formula of ≥5.5, the moldability coefficient (R) of the formula of ≥0.55, and a gel fraction of 10W60%. The ratio of ethylene to the α-olefin is adjusted to give the polymer having desired density.
USE: Heat-insulating steel plate for building use, etc.
COPYRIGHT: (C)1982,JPO&Japio
JP8569981A 1981-06-05 1981-06-05 Crosslinked polyethylene foam sheet Granted JPS57202327A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8569981A JPS57202327A (en) 1981-06-05 1981-06-05 Crosslinked polyethylene foam sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8569981A JPS57202327A (en) 1981-06-05 1981-06-05 Crosslinked polyethylene foam sheet

Publications (2)

Publication Number Publication Date
JPS57202327A true JPS57202327A (en) 1982-12-11
JPH0257578B2 JPH0257578B2 (en) 1990-12-05

Family

ID=13866069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8569981A Granted JPS57202327A (en) 1981-06-05 1981-06-05 Crosslinked polyethylene foam sheet

Country Status (1)

Country Link
JP (1) JPS57202327A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63501220A (en) * 1985-07-02 1988-05-12 ビーピー　ケミカルズ　フォームズ　ビジネス　エスエイ Linear low density polyethylene foam and its manufacturing method
US9260577B2 (en) 2009-07-14 2016-02-16 Toray Plastics (America), Inc. Crosslinked polyolefin foam sheet with exceptional softness, haptics, moldability, thermal stability and shear strength

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56155232A (en) * 1980-05-02 1981-12-01 Nippon Oil Co Ltd Blowing composition

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56155232A (en) * 1980-05-02 1981-12-01 Nippon Oil Co Ltd Blowing composition

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63501220A (en) * 1985-07-02 1988-05-12 ビーピー　ケミカルズ　フォームズ　ビジネス　エスエイ Linear low density polyethylene foam and its manufacturing method
US9260577B2 (en) 2009-07-14 2016-02-16 Toray Plastics (America), Inc. Crosslinked polyolefin foam sheet with exceptional softness, haptics, moldability, thermal stability and shear strength
US10301447B2 (en) 2009-07-14 2019-05-28 Toray Plastics (America), Inc. Crosslinked polyolefin foam sheet with exceptional softness, haptics, moldability, thermal stability and shear strength

Also Published As

Publication number Publication date
JPH0257578B2 (en) 1990-12-05

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