JPS57185123A - Method of molding thermoplastic foamed resin - Google Patents

Method of molding thermoplastic foamed resin

Info

Publication number
JPS57185123A
JPS57185123A JP56069335A JP6933581A JPS57185123A JP S57185123 A JPS57185123 A JP S57185123A JP 56069335 A JP56069335 A JP 56069335A JP 6933581 A JP6933581 A JP 6933581A JP S57185123 A JPS57185123 A JP S57185123A
Authority
JP
Japan
Prior art keywords
mold
steam
molds
chamber
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
JP56069335A
Other languages
Japanese (ja)
Inventor
Shigeo Nishikawa
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.)
YUKA BAADEITSUSHIE KK
Mitsubishi Chemical BASF Co Ltd
Original Assignee
YUKA BAADEITSUSHIE KK
Mitsubishi Chemical BASF 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 YUKA BAADEITSUSHIE KK, Mitsubishi Chemical BASF Co Ltd filed Critical YUKA BAADEITSUSHIE KK
Priority to JP56069335A priority Critical patent/JPS57185123A/en
Publication of JPS57185123A publication Critical patent/JPS57185123A/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

  • Molding Of Porous Articles (AREA)

Abstract

PURPOSE:To obtain a foamed body excellent in the molding properties in a short period, by supplying steam into one of the molds defining a cavity so that the steam is passed from a heating steam chamber of the mold through fine pores to expel the air present between foamed particles into the other mold. CONSTITUTION:The cavity 3 defind by a pair of the molds 1, 2 is filled with the thermoplastic prefoamed particles a, and after valves 8, 9 of steam pipes 4, 5 and exhaust pipes 12, 13 are opened to introduced steam into the molds 1, 2 to expel the air in the heating steam chambers 6, 7, the valves 8, 12, 13 are closed to introduce the steam introduced in the mold 2 into the cavity 3 through fine pores of the chamber 7 so that the air present between the foamed particles a is expelled into the chamber 6 of a mold 1, and the chamber 7 is heated to cause the foamed particles a to fuse together. When the pressure difference of the mold 1 and the mold 2 reaches on the order of 0.3kg/cm<2>, the valve 8 is opened so that both the molds 1, 2 are heated to heat and foam the foamed particles a.
JP56069335A 1981-05-11 1981-05-11 Method of molding thermoplastic foamed resin Pending JPS57185123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56069335A JPS57185123A (en) 1981-05-11 1981-05-11 Method of molding thermoplastic foamed resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56069335A JPS57185123A (en) 1981-05-11 1981-05-11 Method of molding thermoplastic foamed resin

Publications (1)

Publication Number Publication Date
JPS57185123A true JPS57185123A (en) 1982-11-15

Family

ID=13399572

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56069335A Pending JPS57185123A (en) 1981-05-11 1981-05-11 Method of molding thermoplastic foamed resin

Country Status (1)

Country Link
JP (1) JPS57185123A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022223256A1 (en) * 2021-04-22 2022-10-27 Siegfried Hofmann Gmbh Method and device for processing particle foam material to produce a molded particle foam part

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022223256A1 (en) * 2021-04-22 2022-10-27 Siegfried Hofmann Gmbh Method and device for processing particle foam material to produce a molded particle foam part

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