JPS5559934A - Method of fabricating styrene resin foaming molded article - Google Patents

Method of fabricating styrene resin foaming molded article

Info

Publication number
JPS5559934A
JPS5559934A JP13252778A JP13252778A JPS5559934A JP S5559934 A JPS5559934 A JP S5559934A JP 13252778 A JP13252778 A JP 13252778A JP 13252778 A JP13252778 A JP 13252778A JP S5559934 A JPS5559934 A JP S5559934A
Authority
JP
Japan
Prior art keywords
foaming
styrene resin
mold
articles
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
JP13252778A
Other languages
Japanese (ja)
Inventor
Hiroshi Matsui
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.)
Mitsubishi Chemical BASF Co Ltd
Original Assignee
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 Mitsubishi Chemical BASF Co Ltd filed Critical Mitsubishi Chemical BASF Co Ltd
Priority to JP13252778A priority Critical patent/JPS5559934A/en
Publication of JPS5559934A publication Critical patent/JPS5559934A/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

Abstract

PURPOSE:To provide the subject method curtailing the cooling process, comprising the steps of : pre-foaming a foaming styrene resin, thereafter transferring the resin to a shaping mold to heat and mold the same, subsequently once releasing the molding pressure, and molding and cooling under pressure the same. CONSTITUTION:Foaming styrene resin particles containing a volatile foaming agent such as propane or the like are heated and pre-foamed. The thus obtained pre- foamed particles are placed in a shaping mold without taking ripening time thereby to heat and mold the particles. Subsequently, the compression molding pressure is released to expand the molded articles of above the softening temperature. Then, the expanded articles are molded under compression again, and thereafter are cooled thereby to obtain the object foaming articles. EFFECT:By the expansion compression molding, the surplus foaming force in the cavities of the foaming molded articles is reduced to the minimum and the cooling time for suppressing surplus foaming is shortened.
JP13252778A 1978-10-30 1978-10-30 Method of fabricating styrene resin foaming molded article Pending JPS5559934A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13252778A JPS5559934A (en) 1978-10-30 1978-10-30 Method of fabricating styrene resin foaming molded article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13252778A JPS5559934A (en) 1978-10-30 1978-10-30 Method of fabricating styrene resin foaming molded article

Publications (1)

Publication Number Publication Date
JPS5559934A true JPS5559934A (en) 1980-05-06

Family

ID=15083370

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13252778A Pending JPS5559934A (en) 1978-10-30 1978-10-30 Method of fabricating styrene resin foaming molded article

Country Status (1)

Country Link
JP (1) JPS5559934A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51132278A (en) * 1975-05-14 1976-11-17 Badische Yuka Co Ltd Method of producing styrene resin foaming formed article

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51132278A (en) * 1975-05-14 1976-11-17 Badische Yuka Co Ltd Method of producing styrene resin foaming formed article

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