JPS6420109A - Two-color molding method - Google Patents
Two-color molding methodInfo
- 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
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.
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)
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 |
-
1987
- 1987-07-16 JP JP17751087A patent/JPS6420109A/en active Pending
Cited By (6)
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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