JPS55142627A - Method of expansion molding - Google Patents

Method of expansion molding

Info

Publication number
JPS55142627A
JPS55142627A JP5166379A JP5166379A JPS55142627A JP S55142627 A JPS55142627 A JP S55142627A JP 5166379 A JP5166379 A JP 5166379A JP 5166379 A JP5166379 A JP 5166379A JP S55142627 A JPS55142627 A JP S55142627A
Authority
JP
Japan
Prior art keywords
mold
cooling
foam
air
indent
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
JP5166379A
Other languages
Japanese (ja)
Inventor
Takashi Kamimura
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.)
Sekisui Kasei Co Ltd
Original Assignee
Sekisui Plastics 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 Sekisui Plastics Co Ltd filed Critical Sekisui Plastics Co Ltd
Priority to JP5166379A priority Critical patent/JPS55142627A/en
Publication of JPS55142627A publication Critical patent/JPS55142627A/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)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE:To remove shrinkage and well of foam shaped articles to improve their quality by filling the mold indent with preliminary foaming particles heating to swell the particles to foam-shape the material, and thereafter carrying out the mold cooling by forcible air cooling. CONSTITUTION:When the mold closure is carried out to mutually match a cavity mold 1 with a core mold 2, a mold indent 3 is formed as a cavity between both molds 1 and 2, and the material can be placed in the mold indent. Further, a filler 4 is arranged to be filled with preliminary foaming particles consisting of a thermoplastic resin excellent in heat resistance through a material inlet port 41. In carrying out foam shaping, the preliminary foaming particles excellent in heat resistance placed in the mold indent 3 by means of the filler 4, and are subjected to heating by steam to swell and foam-shape the foaming particles and, thereafter, cooling air is supplied through spray holes 15 and 25 of air pilelines 14 and 24 via supply holes 13 and 23 of respective molds, without using cooling with water, and thus the mold cooling is carried out by forcible cooling by air.
JP5166379A 1979-04-25 1979-04-25 Method of expansion molding Pending JPS55142627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5166379A JPS55142627A (en) 1979-04-25 1979-04-25 Method of expansion molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5166379A JPS55142627A (en) 1979-04-25 1979-04-25 Method of expansion molding

Publications (1)

Publication Number Publication Date
JPS55142627A true JPS55142627A (en) 1980-11-07

Family

ID=12893109

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5166379A Pending JPS55142627A (en) 1979-04-25 1979-04-25 Method of expansion molding

Country Status (1)

Country Link
JP (1) JPS55142627A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5978819A (en) * 1982-10-27 1984-05-07 Kanegafuchi Chem Ind Co Ltd Cooling method of thermoplastic foamed resin being molded in mold
CN105984133A (en) * 2015-01-27 2016-10-05 常州市东科电子科技有限公司 Multifunctional 3D printing head
CN105984142A (en) * 2015-01-27 2016-10-05 常州市东科电子科技有限公司 Double-row-pore-filling 3D printing head
CN105984139A (en) * 2015-01-27 2016-10-05 常州市东科电子科技有限公司 3D printing apparatus with hot air polishing and cold air shaping

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5978819A (en) * 1982-10-27 1984-05-07 Kanegafuchi Chem Ind Co Ltd Cooling method of thermoplastic foamed resin being molded in mold
CN105984133A (en) * 2015-01-27 2016-10-05 常州市东科电子科技有限公司 Multifunctional 3D printing head
CN105984142A (en) * 2015-01-27 2016-10-05 常州市东科电子科技有限公司 Double-row-pore-filling 3D printing head
CN105984139A (en) * 2015-01-27 2016-10-05 常州市东科电子科技有限公司 3D printing apparatus with hot air polishing and cold air shaping

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