JPS5770621A - Foamed polyethylene molded object and manufacture tereof - Google Patents

Foamed polyethylene molded object and manufacture tereof

Info

Publication number
JPS5770621A
JPS5770621A JP55146535A JP14653580A JPS5770621A JP S5770621 A JPS5770621 A JP S5770621A JP 55146535 A JP55146535 A JP 55146535A JP 14653580 A JP14653580 A JP 14653580A JP S5770621 A JPS5770621 A JP S5770621A
Authority
JP
Japan
Prior art keywords
particles
molded object
manufacture
foamed
particle
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
JP55146535A
Other languages
Japanese (ja)
Other versions
JPS6311975B2 (en
Inventor
Shigeya Sato
Tsukasa Yamagishi
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 JP55146535A priority Critical patent/JPS5770621A/en
Priority to CA000366174A priority patent/CA1147100A/en
Priority to KR1019800004639A priority patent/KR830002656B1/en
Priority to US06/213,643 priority patent/US4366263A/en
Priority to DE8080107757T priority patent/DE3072109D1/en
Priority to EP80107757A priority patent/EP0032557B1/en
Publication of JPS5770621A publication Critical patent/JPS5770621A/en
Publication of JPS6311975B2 publication Critical patent/JPS6311975B2/ja
Priority to HK284/89A priority patent/HK28489A/en
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To manufacture said molded object having almost no interstice between particles and a smooth and glossy surface by using specified high expansion PE foaming particles.
CONSTITUTION: After PE particles of density 0.925W0.940gr/cm3 is crosslinktreated, the foaming agent is impregnated. After the foaming agent on the surface of the particle is volatilized, it is foamed and the foamed particle of melting point 107W124°C having the membrane thickness of the outer skin three times thicker than the membrane thickness of the internal cell structure is obtained. Then this foamed particle is heat-treated, being exposed in an open air 1W10min, and provided with expansion capacity, thereafter it is filled in the mold and thermally expanded and the particles are fusion-bonded between them. Then the obtained molded object is aging-treated over 60°C more than 10hr, the molded object of which density D 0.025W0.05g/cm3 and stress at 25% compression F have a relation shown in formula, concavity coefficient between particles composing the surface is less than 10, dimensional variation with time is 96hr in within 2%, heat-resistant creep at 80°C is within 35% is obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP55146535A 1979-12-10 1980-10-20 Foamed polyethylene molded object and manufacture tereof Granted JPS5770621A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP55146535A JPS5770621A (en) 1980-10-20 1980-10-20 Foamed polyethylene molded object and manufacture tereof
CA000366174A CA1147100A (en) 1979-12-10 1980-12-04 Expanded cross-linked polyethylene particle, a molded product thereof and the methods thereof
KR1019800004639A KR830002656B1 (en) 1980-06-30 1980-12-05 Expended cross-linked pelyethylene particls a molded product there-of and the methodes thereof
US06/213,643 US4366263A (en) 1979-12-10 1980-12-05 Expanded cross-linked polyethylene particle, a molded product thereof and the methods thereof
DE8080107757T DE3072109D1 (en) 1979-12-10 1980-12-09 An expanded cross-linked polyethylene particle and methods to produce molded products thereof
EP80107757A EP0032557B1 (en) 1979-12-10 1980-12-09 An expanded cross-linked polyethylene particle and methods to produce molded products thereof
HK284/89A HK28489A (en) 1979-12-10 1989-04-06 An expanded cross-linked polyethylene particle and methods to produce molded products thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55146535A JPS5770621A (en) 1980-10-20 1980-10-20 Foamed polyethylene molded object and manufacture tereof

Publications (2)

Publication Number Publication Date
JPS5770621A true JPS5770621A (en) 1982-05-01
JPS6311975B2 JPS6311975B2 (en) 1988-03-16

Family

ID=15409837

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55146535A Granted JPS5770621A (en) 1979-12-10 1980-10-20 Foamed polyethylene molded object and manufacture tereof

Country Status (1)

Country Link
JP (1) JPS5770621A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5861128A (en) * 1981-10-09 1983-04-12 Asahi Chem Ind Co Ltd Foamed molded propylene resin article and its preparation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49128065A (en) * 1973-04-10 1974-12-07
JPS5138746A (en) * 1974-09-27 1976-03-31 Obayashi Constr Co Ltd
JPS53137170A (en) * 1977-05-06 1978-11-30 Hitachi Ltd Automatic range interchanging system for electromagnetic flow meter converter
JPS5698147A (en) * 1979-12-30 1981-08-07 Kanegafuchi Chem Ind Co Ltd Foamed polyolefin molding by water-impermeable bead method and preparation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49128065A (en) * 1973-04-10 1974-12-07
JPS5138746A (en) * 1974-09-27 1976-03-31 Obayashi Constr Co Ltd
JPS53137170A (en) * 1977-05-06 1978-11-30 Hitachi Ltd Automatic range interchanging system for electromagnetic flow meter converter
JPS5698147A (en) * 1979-12-30 1981-08-07 Kanegafuchi Chem Ind Co Ltd Foamed polyolefin molding by water-impermeable bead method and preparation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5861128A (en) * 1981-10-09 1983-04-12 Asahi Chem Ind Co Ltd Foamed molded propylene resin article and its preparation

Also Published As

Publication number Publication date
JPS6311975B2 (en) 1988-03-16

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