JPS5861128A - Foamed molded propylene resin article and its preparation - Google Patents

Foamed molded propylene resin article and its preparation

Info

Publication number
JPS5861128A
JPS5861128A JP16014881A JP16014881A JPS5861128A JP S5861128 A JPS5861128 A JP S5861128A JP 16014881 A JP16014881 A JP 16014881A JP 16014881 A JP16014881 A JP 16014881A JP S5861128 A JPS5861128 A JP S5861128A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
particles
foamed
foaming
molded article
propylene
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.)
Pending
Application number
JP16014881A
Other versions
JPS6334893B2 (en )
Inventor
Tsuneo Hogi
Shigeya Sato
Original Assignee
Asahi Chem Ind 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

Links

Abstract

PURPOSE: To obtain the titled molded article having improved dynamic buffering characteristics, permanent compression set resistance, etc., by foaming a specific propylene resin under specific conditions, foaming the resultant uncrosslinked foamed particles in a mold, and fusing and integrating the surfaces of the particles together.
CONSTITUTION: (B) A volatile organic foaming agent having -50W+110°C boiling point in the surface parts of foamable resin particles containing (A) propylene-ethylene random copolymer, consisting of 90wt% or more propylene component and 10wt% or less ethylenic component, and having ≤0.7 randomness factor (R), <40% stereoregularity (II) and 50W35°C Vicat softening point under 5kg/cm2 load and (B) the volatile organic foaming agent is preferentially volatilized, and the whole particles are then foamed to give foamed particles having a thick-wall skin. The foaming ability is then given to the foamed particles, which are in an uncrosslinked state foamed under heating in a mold to fuse and integrate the surfaces of the particles together so that the thickness of the fused film may be 8 times or more that of the cellular wall of the particles in the molded article. Thus, the aimed molded article is obtained.
COPYRIGHT: (C)1983,JPO&Japio
JP16014881A 1981-10-09 1981-10-09 Expired JPS6334893B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16014881A JPS6334893B2 (en) 1981-10-09 1981-10-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16014881A JPS6334893B2 (en) 1981-10-09 1981-10-09

Publications (2)

Publication Number Publication Date
JPS5861128A true true JPS5861128A (en) 1983-04-12
JPS6334893B2 JPS6334893B2 (en) 1988-07-12

Family

ID=15708901

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16014881A Expired JPS6334893B2 (en) 1981-10-09 1981-10-09

Country Status (1)

Country Link
JP (1) JPS6334893B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6090744A (en) * 1983-10-24 1985-05-21 Japan Styrene Paper Co Ltd Curing method of expanded polypropylene resin molding in molds
JPS60166442A (en) * 1984-02-10 1985-08-29 Kanegafuchi Chem Ind Co Ltd Curing method of polyolefin expansion molded shape
JPS61115940A (en) * 1984-11-09 1986-06-03 Mitsubishi Yuka Badische Kk Polypropylene foam particle
JP2009286899A (en) * 2008-05-29 2009-12-10 Kaneka Corp Polypropylene resin foamed particle and in-mold foaming molded product

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5122951A (en) * 1974-08-16 1976-02-24 Yoshio Ihara Eaaenjin
JPS53137170A (en) * 1977-05-06 1978-11-30 Hitachi Ltd Automatic range interchanging system for electromagnetic flow meter converter
JPS561344A (en) * 1979-06-18 1981-01-09 Nishimu Denshi Kogyo Kk Controlling method for optimum wet-quantity in wet-type insulator stain measurement
JPS5770621A (en) * 1980-10-20 1982-05-01 Asahi Chem Ind Co Ltd Foamed polyethylene molded object and manufacture tereof
JPS5790027A (en) * 1980-11-22 1982-06-04 Japan Styrene Paper Co Ltd Prefoamed polypropylene resin particle and its production

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5122951A (en) * 1974-08-16 1976-02-24 Yoshio Ihara Eaaenjin
JPS53137170A (en) * 1977-05-06 1978-11-30 Hitachi Ltd Automatic range interchanging system for electromagnetic flow meter converter
JPS561344A (en) * 1979-06-18 1981-01-09 Nishimu Denshi Kogyo Kk Controlling method for optimum wet-quantity in wet-type insulator stain measurement
JPS5770621A (en) * 1980-10-20 1982-05-01 Asahi Chem Ind Co Ltd Foamed polyethylene molded object and manufacture tereof
JPS5790027A (en) * 1980-11-22 1982-06-04 Japan Styrene Paper Co Ltd Prefoamed polypropylene resin particle and its production

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6090744A (en) * 1983-10-24 1985-05-21 Japan Styrene Paper Co Ltd Curing method of expanded polypropylene resin molding in molds
JPS60166442A (en) * 1984-02-10 1985-08-29 Kanegafuchi Chem Ind Co Ltd Curing method of polyolefin expansion molded shape
JPH0365259B2 (en) * 1984-02-10 1991-10-11
JPS61115940A (en) * 1984-11-09 1986-06-03 Mitsubishi Yuka Badische Kk Polypropylene foam particle
JP2009286899A (en) * 2008-05-29 2009-12-10 Kaneka Corp Polypropylene resin foamed particle and in-mold foaming molded product

Also Published As

Publication number Publication date Type
JPS6334893B2 (en) 1988-07-12 grant

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