JPS5796831A - Method of molding styrene synthetic resin foamed item - Google Patents

Method of molding styrene synthetic resin foamed item

Info

Publication number
JPS5796831A
JPS5796831A JP55171976A JP17197680A JPS5796831A JP S5796831 A JPS5796831 A JP S5796831A JP 55171976 A JP55171976 A JP 55171976A JP 17197680 A JP17197680 A JP 17197680A JP S5796831 A JPS5796831 A JP S5796831A
Authority
JP
Japan
Prior art keywords
cavity
steam
chambers
foamed
particles
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
JP55171976A
Other languages
Japanese (ja)
Inventor
Tatsuo Hayashi
Ryoichi Ito
Yoshihiro Tomono
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.)
OSAKA FIBRE INDUSTRY
Daisen Industry Co Ltd
Mitsubishi Petrochemical Co Ltd
Original Assignee
OSAKA FIBRE INDUSTRY
Daisen Industry Co Ltd
Mitsubishi Petrochemical 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 OSAKA FIBRE INDUSTRY, Daisen Industry Co Ltd, Mitsubishi Petrochemical Co Ltd filed Critical OSAKA FIBRE INDUSTRY
Priority to JP55171976A priority Critical patent/JPS5796831A/en
Publication of JPS5796831A publication Critical patent/JPS5796831A/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
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
    • B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
    • 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
    • B29C44/3415—Heating or cooling
    • B29C44/3426—Heating by introducing steam in the mould

Landscapes

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

Abstract

PURPOSE:To mold the captioned foamed item having a smooth surface layer, by loading a cavity with styrene resin particles that have been preliminarily foamed using a volatile foaming agent, and subjecting them to first and second heating under specified steam pressure. CONSTITUTION:The particles 4 that have been prepared by preliminarily foaming a styrene resin impregnated with a volatile foaming agent are loaded into the cavity 1 defined by male and female molds that are provided with first heating chambers 2 leading to the cavity and adjacent to outer walls remote from the cavity 1 and second heating chambers 3 adjacent to inner walls facing the cavity 1. Then, steam generated in a boiler 5 is introduced into the chambers 3 under a steam pressure of P2(P1+1<P2<6)kg/cm<2> via adjusting valves S-3, S-4 of a steam controlling apparatus C to heat the inner walls to a softening temperature of the resin or more, and then steam is introduced into the chambers 2 under a steam pressure of P1(0.7<=P1<=1.4)kg/cm<2> via adjusting valves S-1, S-2 to cause the particles to be fused and to be foamed.
JP55171976A 1980-12-08 1980-12-08 Method of molding styrene synthetic resin foamed item Pending JPS5796831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55171976A JPS5796831A (en) 1980-12-08 1980-12-08 Method of molding styrene synthetic resin foamed item

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55171976A JPS5796831A (en) 1980-12-08 1980-12-08 Method of molding styrene synthetic resin foamed item

Publications (1)

Publication Number Publication Date
JPS5796831A true JPS5796831A (en) 1982-06-16

Family

ID=15933225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55171976A Pending JPS5796831A (en) 1980-12-08 1980-12-08 Method of molding styrene synthetic resin foamed item

Country Status (1)

Country Link
JP (1) JPS5796831A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60141546A (en) * 1983-12-28 1985-07-26 豊田合成株式会社 Multilayer structure synthetic resin molded shape and manufacture thereof
WO2017063728A1 (en) * 2015-10-13 2017-04-20 Krallmann Kunststoffverarbeitung Gmbh Device and process for producing mouldings composed of a mouldable foam

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5247866A (en) * 1975-10-15 1977-04-16 Sekisui Plastics Process for producing thermoplastic resin foam with hard surface
JPS5514243A (en) * 1978-07-18 1980-01-31 Mitsubishi Petrochem Co Ltd Foaming mold for thermoplastic synthetic resin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5247866A (en) * 1975-10-15 1977-04-16 Sekisui Plastics Process for producing thermoplastic resin foam with hard surface
JPS5514243A (en) * 1978-07-18 1980-01-31 Mitsubishi Petrochem Co Ltd Foaming mold for thermoplastic synthetic resin

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60141546A (en) * 1983-12-28 1985-07-26 豊田合成株式会社 Multilayer structure synthetic resin molded shape and manufacture thereof
JPS6327172B2 (en) * 1983-12-28 1988-06-02 Toyoda Gosei Kk
WO2017063728A1 (en) * 2015-10-13 2017-04-20 Krallmann Kunststoffverarbeitung Gmbh Device and process for producing mouldings composed of a mouldable foam
JP2018534175A (en) * 2015-10-13 2018-11-22 クラルマン クンストシュトッフフェアアルバイトゥング ゲーエムベーハー Apparatus and method for producing molded article comprising expanded particles
EP3362245B1 (en) 2015-10-13 2020-08-26 Krallmann Kunststoffverarbeitung GmbH Device and process for producing mouldings composed of a mouldable foam

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