JPS55137928A - Method and apparatus for preliminarily foaming particle of foamable thermoplastic resin - Google Patents

Method and apparatus for preliminarily foaming particle of foamable thermoplastic resin

Info

Publication number
JPS55137928A
JPS55137928A JP4696979A JP4696979A JPS55137928A JP S55137928 A JPS55137928 A JP S55137928A JP 4696979 A JP4696979 A JP 4696979A JP 4696979 A JP4696979 A JP 4696979A JP S55137928 A JPS55137928 A JP S55137928A
Authority
JP
Japan
Prior art keywords
particles
vessel
preliminary foaming
thermoplastic resin
vanes
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
JP4696979A
Other languages
Japanese (ja)
Inventor
Kiyoshi Mori
Tatsuhiko Nishida
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.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi 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 Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Priority to JP4696979A priority Critical patent/JPS55137928A/en
Publication of JPS55137928A publication Critical patent/JPS55137928A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3461—Making or treating expandable particles

Landscapes

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

Abstract

PURPOSE:To prevent the agglomeration of particles of a foamable thermoplastic resin during a preliminary foaming thereof, by introducing a cooling medium into a hollow agitator shaft and hollow agitation vanes in a cylindrical vessel in which particles of the mentioned resin are heated to preliminarily foam the same, tubular members provided among the agitator vanes, and a side wall of the cylindrical vessel, whereby the particles are cooled to a temperature not higher than the softening point thereof. CONSTITUTION:Particles of a foamable thermoplastic resin are supplied into a cylindrical preliminary foaming vessel 1. The particles are subjected to preliminary foaming in the vessel 1. The preliminary foaming of the particles is carried out by thermally expanding the same while agitating the particles by agitation vanes 2 extended from an agitator shaft 3 and blowing into the vessel 1 a heating medium from holes in a perforated board provided at a bottom portion of the vessel 1. During the preliminary foaming operation, a cooling mdium is introducted through a cooling medium supply pipe 10 into at least one of the hollow agitator shaft 3, agitation vanes 2, tubular members 6 provided among the agitation vanes 2, and a side wall of the vessel 1 to cool the particles to a temperature not higher than the softening point thereof. Thus, the fusing of the particles of the resin to metal surfaces and the agglomeration of the particles in a fused state can be prevented.
JP4696979A 1979-04-16 1979-04-16 Method and apparatus for preliminarily foaming particle of foamable thermoplastic resin Pending JPS55137928A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4696979A JPS55137928A (en) 1979-04-16 1979-04-16 Method and apparatus for preliminarily foaming particle of foamable thermoplastic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4696979A JPS55137928A (en) 1979-04-16 1979-04-16 Method and apparatus for preliminarily foaming particle of foamable thermoplastic resin

Publications (1)

Publication Number Publication Date
JPS55137928A true JPS55137928A (en) 1980-10-28

Family

ID=12762083

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4696979A Pending JPS55137928A (en) 1979-04-16 1979-04-16 Method and apparatus for preliminarily foaming particle of foamable thermoplastic resin

Country Status (1)

Country Link
JP (1) JPS55137928A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5580503A (en) * 1992-09-29 1996-12-03 Basf Corporation Continuous process for expanding thermoplastic minipellets
WO2004056549A1 (en) * 2002-12-20 2004-07-08 Akzo Nobel N.V. Method and device for pre- expanding thermoplastic microspheres
WO2004111111A1 (en) * 2003-06-12 2004-12-23 Basell Poliolefine Italia S.R.L. Post-treatment for polymer pellets

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5580503A (en) * 1992-09-29 1996-12-03 Basf Corporation Continuous process for expanding thermoplastic minipellets
US5753157A (en) * 1992-09-29 1998-05-19 Basf Corporation Continuous process for expanding thermoplastic minipellets
WO2004056549A1 (en) * 2002-12-20 2004-07-08 Akzo Nobel N.V. Method and device for pre- expanding thermoplastic microspheres
WO2004111111A1 (en) * 2003-06-12 2004-12-23 Basell Poliolefine Italia S.R.L. Post-treatment for polymer pellets
CN100410297C (en) * 2003-06-12 2008-08-13 巴塞尔聚烯烃意大利有限责任公司 Post-treatment for polymer pellets
US7732551B2 (en) 2003-06-12 2010-06-08 Basell Poliolefine Italia S.R.L. Post-treatment for polymer pellets
KR101037056B1 (en) 2003-06-12 2011-05-26 바셀 폴리올레핀 이탈리아 에스.알.엘 Post-treatment for polymer pellets

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