| 发明名称 |
Die restrictions to obtain smooth surfaces on foam extrudates |
| 摘要 |
Apparatus and method for reducing interior surface roughness and improving interior surface gloss in extruded tubular articles made from foamed thermoplastic materials.
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| 申请公布号 |
US3976419(A) |
申请公布日期 |
1976.08.24 |
| 申请号 |
US19740507008 |
申请日期 |
1974.09.18 |
| 申请人 |
STANDARD OIL COMPANY (INDIANA) |
发明人 |
EGLI, ERNST;THOMAS, LARRY A. |
| 分类号 |
B29C47/12;(IPC1-7):B29F3/04 |
主分类号 |
B29C47/12 |
| 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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