JPS55137929A - Method of molding thick foamable styrol molded product - Google Patents

Method of molding thick foamable styrol molded product

Info

Publication number
JPS55137929A
JPS55137929A JP4615779A JP4615779A JPS55137929A JP S55137929 A JPS55137929 A JP S55137929A JP 4615779 A JP4615779 A JP 4615779A JP 4615779 A JP4615779 A JP 4615779A JP S55137929 A JPS55137929 A JP S55137929A
Authority
JP
Japan
Prior art keywords
mold
boiler
beads
steam
dry steam
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
JP4615779A
Other languages
Japanese (ja)
Inventor
Yoshio Shiromizu
Choichiro Hasumi
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.)
Toyo Machinery and Metal Co Ltd
Original Assignee
Toyo Machinery and Metal 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 Toyo Machinery and Metal Co Ltd filed Critical Toyo Machinery and Metal Co Ltd
Priority to JP4615779A priority Critical patent/JPS55137929A/en
Publication of JPS55137929A publication Critical patent/JPS55137929A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material

Landscapes

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

Abstract

PURPOSE:To obtain thick molded products of foamable styrol of a uniform quality by applying dry steam of a low pressure and a low temperature to starting beads packed in a mold, and heating both surfaces of the beads with saturated steam of a high pressure and a high temperature. CONSTITUTION:A boiler 13 for supplying dry steam of a low pressure and a low temperature into a mold consisting of a female mold 1 and a male mold 2, and a boiler 6 for supplying saturated steam of a high pressure and a high temperature into the mold are provided outside thereof. These boilers 13, 6 are connected to and communicated with the mold via valves 10, 11, 16. A predetermined amount of starting beads of foamable styrol are placed in the mold, and dry steam of a low temperature of not more than about 90 deg.C and a low pressure of about 0.5-0.6kg/ cm<2> is introduced from the boiler 13 into a cavity 3. Consequently, the beads are fused entirely. The superficial portion and core portion of the material are foamed uniformly, and wet air among the beads is forced out to the outside of the mold owing to the dry steam introduced thereinto. The boiler 13 is then switched to the boiler 6 to introduced saturated steam of a high temperature and a high pressure into the mold and heat therewith both surface of the material. Thus, a finishing fusing of a foamed product is carried out.
JP4615779A 1979-04-16 1979-04-16 Method of molding thick foamable styrol molded product Pending JPS55137929A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4615779A JPS55137929A (en) 1979-04-16 1979-04-16 Method of molding thick foamable styrol molded product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4615779A JPS55137929A (en) 1979-04-16 1979-04-16 Method of molding thick foamable styrol molded product

Publications (1)

Publication Number Publication Date
JPS55137929A true JPS55137929A (en) 1980-10-28

Family

ID=12739154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4615779A Pending JPS55137929A (en) 1979-04-16 1979-04-16 Method of molding thick foamable styrol molded product

Country Status (1)

Country Link
JP (1) JPS55137929A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57135125A (en) * 1981-02-13 1982-08-20 Sekisui Plastics Co Ltd Manufacture for thermoplastic foamed product with outer layer of skin

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57135125A (en) * 1981-02-13 1982-08-20 Sekisui Plastics Co Ltd Manufacture for thermoplastic foamed product with outer layer of skin
JPS6219293B2 (en) * 1981-02-13 1987-04-27 Sekisui Plastics

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