发明名称 |
Apparatus for forming plastic |
摘要 |
A method for injection molding a product having a non-cellular skin layer and a cellular core portion. The method involves successive or simultaneous injection of a non-foamable resin material and a foamable resin material through a sprue bushing having an injection channel connected to the mold cavity and a pair of fixed feed channels intersecting with the injection channel. The injection mold has a bore with a sprue bushing therein. The sprue bushing having an injection channel therein and intersecting with a pair of fixed feed channels. Injection units deliver the materials to the pair of fixed feed channels.
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申请公布号 |
US4210616(A) |
申请公布日期 |
1980.07.01 |
申请号 |
US19780887182 |
申请日期 |
1978.03.16 |
申请人 |
SCHLOEMANN-SIEMAG AG |
发明人 |
ECKARDT, HELMUT;EHRITT, JURGEN |
分类号 |
B29C44/04;B29C45/00;B29C45/16;(IPC1-7):B29D27/00;B29F1/10 |
主分类号 |
B29C44/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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