JPS56144131A - Manufacture of heavy-gage molding of synthetic resin - Google Patents

Manufacture of heavy-gage molding of synthetic resin

Info

Publication number
JPS56144131A
JPS56144131A JP4734480A JP4734480A JPS56144131A JP S56144131 A JPS56144131 A JP S56144131A JP 4734480 A JP4734480 A JP 4734480A JP 4734480 A JP4734480 A JP 4734480A JP S56144131 A JPS56144131 A JP S56144131A
Authority
JP
Japan
Prior art keywords
substrate
synthetic resin
molding
mold
cavity
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
JP4734480A
Other languages
Japanese (ja)
Inventor
Toshiaki Yamada
Hajime Ishida
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.)
Hashimoto Forming Industry Co Ltd
Original Assignee
Hashimoto Forming Industry 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 Hashimoto Forming Industry Co Ltd filed Critical Hashimoto Forming Industry Co Ltd
Priority to JP4734480A priority Critical patent/JPS56144131A/en
Publication of JPS56144131A publication Critical patent/JPS56144131A/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
    • B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1679—Making multilayered or multicoloured articles applying surface layers onto injection-moulded substrates inside the mould cavity, e.g. in-mould coating [IMC]
    • 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
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16—Making multilayered or multicoloured articles
    • B29C45/1615—The materials being injected at different moulding stations
    • B29C45/1628—The materials being injected at different moulding stations using a mould carrier rotatable about an axis perpendicular to the opening and closing axis of the moulding stations
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To obtain the captioned product simply at a low cost by a method wherein an injection molded foamed molding substrate is inserted into a mold providing a small cavity and synthetic resin material is poured into this cavity to form a solid surface layer integrally on the surface of the substrate. CONSTITUTION:In case of the manufacturing of the synthetic resin molding, having a heavy gage or an ununiform section, such as the side mole of an automobile, the expandable synthetic resin material is poured into the first mold 1 by the first injection molding machine 7 to mold the molding substrate A. Subsequently, the molded substrate A is inserted into the second mold 2 being made so that a small cavity may be provided between the surface side of the substrate A and the internal surface 2e of the cavity for the second mold 2, then, the synthetic resin material is poured into this cavity by the second injection molding machine 8 to form the solid surface layer B' integrally on the surface side of the substrate A. According to this method, the product molding having desired colors, patterns or the like on the outer surface thereof may be obtained at a low cost.
JP4734480A 1980-04-10 1980-04-10 Manufacture of heavy-gage molding of synthetic resin Pending JPS56144131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4734480A JPS56144131A (en) 1980-04-10 1980-04-10 Manufacture of heavy-gage molding of synthetic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4734480A JPS56144131A (en) 1980-04-10 1980-04-10 Manufacture of heavy-gage molding of synthetic resin

Publications (1)

Publication Number Publication Date
JPS56144131A true JPS56144131A (en) 1981-11-10

Family

ID=12772539

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4734480A Pending JPS56144131A (en) 1980-04-10 1980-04-10 Manufacture of heavy-gage molding of synthetic resin

Country Status (1)

Country Link
JP (1) JPS56144131A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59155022A (en) * 1983-02-23 1984-09-04 Hashimoto Forming Co Ltd Manufacture of synthetic resin molded item
JPS6054822A (en) * 1983-09-05 1985-03-29 Mitsubishi Monsanto Chem Co Manufacture of plastic convex lens
EP2889117A1 (en) * 2013-12-23 2015-07-01 Valeo Schalter und Sensoren GmbH Housing for holding a coil spring, coil spring assembly, method for the production of such a housing, method for producing such a coil spring assembly and motor vehicle with such a coil spring assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59155022A (en) * 1983-02-23 1984-09-04 Hashimoto Forming Co Ltd Manufacture of synthetic resin molded item
JPH0331123B2 (en) * 1983-02-23 1991-05-02 Hashimoto Forming Kogyo Co
JPS6054822A (en) * 1983-09-05 1985-03-29 Mitsubishi Monsanto Chem Co Manufacture of plastic convex lens
JPH0331124B2 (en) * 1983-09-05 1991-05-02 Mitsubishi Kasei Horitetsuku Kk
EP2889117A1 (en) * 2013-12-23 2015-07-01 Valeo Schalter und Sensoren GmbH Housing for holding a coil spring, coil spring assembly, method for the production of such a housing, method for producing such a coil spring assembly and motor vehicle with such a coil spring assembly

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