发明名称 |
Plastic molding |
摘要 |
A die ring for use in a blow molding apparatus is provided with depressions at the downstream end of the land to provide the parison with a longitudinally thickened rib and depressions at the upstream end of the land to counteract parison deformation caused by the downstream depressions.
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申请公布号 |
US4735834(A) |
申请公布日期 |
1988.04.05 |
申请号 |
US19860929553 |
申请日期 |
1986.11.12 |
申请人 |
PHILLIPS PETROLEUM COMPANY |
发明人 |
MOZER, LARRY P.;MORGAN, BILL T. |
分类号 |
B29C47/20;B29C49/00;(IPC1-7):B65D23/00 |
主分类号 |
B29C47/20 |
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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