发明名称 |
Molded article having hollow rim portion and process for producing articles |
摘要 |
A process for producing an injection molded article with a hollow rim portion in an injection molding machine including the steps of injecting a short shot of injection molding material into a mold via an injection nozzle, permitting a mold cavity to fill in an unbalanced manner as a result of a gas channel formed in a wall of the mold, closing the injection nozzle; and injecting a pressurized gas into the short shot of injection molding material, wherein the pressurized gas travels through the gas channel into a rim portion of the mold thereby expanding the injection molding material throughout the mold and simultaneously creating a hollow cavity within the rim portion of the mold.
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申请公布号 |
US2004096602(A1) |
申请公布日期 |
2004.05.20 |
申请号 |
US20030344781 |
申请日期 |
2003.12.05 |
申请人 |
RICE FRANK J.;LAABS JR BRUCE A.;KNICKLEBINE DAVE P. |
发明人 |
RICE FRANK J.;LAABS JR BRUCE A.;KNICKLEBINE DAVE P. |
分类号 |
B29C45/17;(IPC1-7):B32B1/08 |
主分类号 |
B29C45/17 |
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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