JPS5759735A - Method of molding article - Google Patents
Method of molding articleInfo
- Publication number
- JPS5759735A JPS5759735A JP13522280A JP13522280A JPS5759735A JP S5759735 A JPS5759735 A JP S5759735A JP 13522280 A JP13522280 A JP 13522280A JP 13522280 A JP13522280 A JP 13522280A JP S5759735 A JPS5759735 A JP S5759735A
- Authority
- JP
- Japan
- Prior art keywords
- film
- air
- mold
- cavity mold
- molded
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
PURPOSE:To prevent the discoloration of a film and formation of short molded part and enhance moldability by exhausting the air contained in a mold when molding. CONSTITUTION:A cavity mold 4 and a core mold 5 are clamped to each other with the film 2 clamped therebetween, and the air is drawn between the film 2 and the cavity mold 4 by forcibly sucking out the air present therebetween by a vacuum pump through an air vent 19. In this condtion where the film 2 is closely contacted to the cavity mold 4, a resin is supplied from a runner 10 and is molded by injecting it through a gate 7 provided in the core mold 5. As a result, the resin is molded in one body with the film 2 in the condition of being closely adhered to the film 2. In this case, since no air is present between the film 2 and the cavity mold 4, no discoloration nor short molding can occur.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13522280A JPS5759735A (en) | 1980-09-30 | 1980-09-30 | Method of molding article |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13522280A JPS5759735A (en) | 1980-09-30 | 1980-09-30 | Method of molding article |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5759735A true JPS5759735A (en) | 1982-04-10 |
Family
ID=15146668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13522280A Pending JPS5759735A (en) | 1980-09-30 | 1980-09-30 | Method of molding article |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5759735A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63132546A (en) * | 1986-11-25 | 1988-06-04 | Hitachi Ltd | Frame format data extracting circuit |
JPH01141710A (en) * | 1987-11-30 | 1989-06-02 | Hashimoto Forming Ind Co Ltd | Method for manufacturing elongated molding having core member |
JPH0644696U (en) * | 1992-11-25 | 1994-06-14 | 株式会社新来島どっく | Bulk cargo retention prevention member |
-
1980
- 1980-09-30 JP JP13522280A patent/JPS5759735A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63132546A (en) * | 1986-11-25 | 1988-06-04 | Hitachi Ltd | Frame format data extracting circuit |
JPH01141710A (en) * | 1987-11-30 | 1989-06-02 | Hashimoto Forming Ind Co Ltd | Method for manufacturing elongated molding having core member |
JPH0644696U (en) * | 1992-11-25 | 1994-06-14 | 株式会社新来島どっく | Bulk cargo retention prevention member |
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