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JPS57195131A - Preparation of polyolefin resin foamed article - Google Patents

Preparation of polyolefin resin foamed article

Info

Publication number
JPS57195131A
JPS57195131A JP56079047A JP7904781A JPS57195131A JP S57195131 A JPS57195131 A JP S57195131A JP 56079047 A JP56079047 A JP 56079047A JP 7904781 A JP7904781 A JP 7904781A JP S57195131 A JPS57195131 A JP S57195131A
Authority
JP
Japan
Prior art keywords
particles
foaming agent
polyolefin resin
water
resin
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
JP56079047A
Other languages
Japanese (ja)
Other versions
JPS5851019B2 (en
Inventor
Kuninori Hirozawa
Sumio Shimada
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.)
JSP Corp
Original Assignee
JSP Corp
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 JSP Corp filed Critical JSP Corp
Priority to JP56079047A priority Critical patent/JPS5851019B2/en
Publication of JPS57195131A publication Critical patent/JPS57195131A/en
Publication of JPS5851019B2 publication Critical patent/JPS5851019B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To prepare the titled foamed article having excellent weldability, by dispersing polyolefin resin particles together with a foaming agent in water in the presence of a specific compound in a closed vessel, and carrying out the preliminary foaming of the dispersion, thereby preventing the welding of the preliminarily foamed particles.
CONSTITUTION: Preliminarily foamed particles are prepared by (1) dispersing (A) particles of a polyolefin resin and (B) a volatile foaming agent (e.g. propane) in water in the presence of (C) ultrafine particles of aluminum oxide or titanium oxide having particle diameter of 1W100mμ, (2) heating the dispersion at a temperature above the softening point of the resin particle (A) (usually at 120W 170°C) to impregnate the foaming agent (B) into the resin particle (A), and (3) opening one end of the closed vessel, thereby discharging the resin particles (A) together with water to the low pressure atmosphere. After the pressurizing treatment of the preliminarily foamed particles with an inorganic gas (or its mixture with the volatile foaming agent), the particles are heated and expanded in a mold to obtain the objective formed article.
COPYRIGHT: (C)1982,JPO&Japio
JP56079047A 1981-05-25 1981-05-25 Method for manufacturing polyolefin resin foam moldings Expired JPS5851019B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56079047A JPS5851019B2 (en) 1981-05-25 1981-05-25 Method for manufacturing polyolefin resin foam moldings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56079047A JPS5851019B2 (en) 1981-05-25 1981-05-25 Method for manufacturing polyolefin resin foam moldings

Publications (2)

Publication Number Publication Date
JPS57195131A true JPS57195131A (en) 1982-11-30
JPS5851019B2 JPS5851019B2 (en) 1983-11-14

Family

ID=13678984

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56079047A Expired JPS5851019B2 (en) 1981-05-25 1981-05-25 Method for manufacturing polyolefin resin foam moldings

Country Status (1)

Country Link
JP (1) JPS5851019B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174326A (en) * 1983-03-24 1984-10-02 Japan Styrene Paper Co Ltd Manufacturing method of polypropylene resin foam molding
JPS59207942A (en) * 1983-05-12 1984-11-26 Kanegafuchi Chem Ind Co Ltd Expanded particle of polyolefinic resin and its preparation
US6133331A (en) * 1996-12-13 2000-10-17 Jsp Corporation Expanded particles of polyolefin resin and process for preparing the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030318U (en) * 1983-08-04 1985-03-01 三菱自動車工業株式会社 Engine cooling fan drive device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174326A (en) * 1983-03-24 1984-10-02 Japan Styrene Paper Co Ltd Manufacturing method of polypropylene resin foam molding
JPS59207942A (en) * 1983-05-12 1984-11-26 Kanegafuchi Chem Ind Co Ltd Expanded particle of polyolefinic resin and its preparation
JPH0559210A (en) * 1983-05-12 1993-03-09 Kanegafuchi Chem Ind Co Ltd Foamed polyolefin resin particle and preparation thereof
JPH072856B2 (en) * 1983-05-12 1995-01-18 鐘淵化学工業株式会社 Polyolefin foamed particles and method for producing the same
US6133331A (en) * 1996-12-13 2000-10-17 Jsp Corporation Expanded particles of polyolefin resin and process for preparing the same

Also Published As

Publication number Publication date
JPS5851019B2 (en) 1983-11-14

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