JPS6420109A - Two-color molding method - Google Patents

Two-color molding method

Info

Publication number
JPS6420109A
JPS6420109A JP17751087A JP17751087A JPS6420109A JP S6420109 A JPS6420109 A JP S6420109A JP 17751087 A JP17751087 A JP 17751087A JP 17751087 A JP17751087 A JP 17751087A JP S6420109 A JPS6420109 A JP S6420109A
Authority
JP
Japan
Prior art keywords
molded product
primary
mold
outer mold
molding
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
JP17751087A
Other languages
Japanese (ja)
Inventor
Manabu Shimizu
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP17751087A priority Critical patent/JPS6420109A/en
Publication of JPS6420109A publication Critical patent/JPS6420109A/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
    • 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
    • B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities

Landscapes

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

Abstract

PURPOSE:To shorten a man-hour by enabling the title method to make a mold common and making replacement of an inner mold unnecessary, by a method wherein a communication hole is formed by making a protrusion of a first outer mold abuts against an end face of a slide core at the time of primary molding and a resin material is filled out through the communication hole and a lower spatial part to be formed of a primary molded product and the slide core at the time of secondary molding. CONSTITUTION:A first outer mold 2 for primary molding and an inner mold 1 are combined together by opposing them to each other and a primary molded product 41 is obtained by injecting a resin material for the primary molding into a cavity which has been formed at that time. The outer mold 2 is removed and a slide core 11 within the inner mold 1 is moved backward in a predetermined state by a retreating device. A second outer mold 3 for secondary molding which is put over the primary molded product 41 is fitted with the primary molded product 41 for combination so that the bottom of the second outer mold 3 and a constituent surface of the cavity abut respectively against the top of the inner mold 1 and a protrusion 41a at a pattern of a figure of zero on the primary molded product 41. A resin material whose color tone is different from that of the primary molding is injected within the cavity through a gate at the tip of a runner within the outer mold 3 and a secondary molded product 42 is obtained.
JP17751087A 1987-07-16 1987-07-16 Two-color molding method Pending JPS6420109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17751087A JPS6420109A (en) 1987-07-16 1987-07-16 Two-color molding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17751087A JPS6420109A (en) 1987-07-16 1987-07-16 Two-color molding method

Publications (1)

Publication Number Publication Date
JPS6420109A true JPS6420109A (en) 1989-01-24

Family

ID=16032166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17751087A Pending JPS6420109A (en) 1987-07-16 1987-07-16 Two-color molding method

Country Status (1)

Country Link
JP (1) JPS6420109A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0243018A (en) * 1989-06-10 1990-02-13 Nissei Plastics Ind Co Composite injection molding
JPH02273216A (en) * 1989-04-14 1990-11-07 Daikyo Inc Double molding method and mold structure
JP2005292230A (en) * 2004-03-31 2005-10-20 Toyoda Gosei Co Ltd Translucent display material, manufacturing method thereof, and molding die for in-mold coating
WO2011096443A1 (en) 2010-02-04 2011-08-11 株式会社ニフコ Two-color molded article and production method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02273216A (en) * 1989-04-14 1990-11-07 Daikyo Inc Double molding method and mold structure
JPH0243018A (en) * 1989-06-10 1990-02-13 Nissei Plastics Ind Co Composite injection molding
JP2005292230A (en) * 2004-03-31 2005-10-20 Toyoda Gosei Co Ltd Translucent display material, manufacturing method thereof, and molding die for in-mold coating
WO2011096443A1 (en) 2010-02-04 2011-08-11 株式会社ニフコ Two-color molded article and production method thereof
JP2011156836A (en) * 2010-02-04 2011-08-18 Nifco Inc Two-color molding and manufacturing method thereof
US9259869B2 (en) 2010-02-04 2016-02-16 Nifco Inc. Two-color molded article and process for production thereof

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