| 发明名称 |
UTENSILE DI ESTRUSIONE PARTICOLARMENTE PER MATERIE PLASTICHE |
| 摘要 |
<p>An extrusion tool consisting of a stack of thin metal wafers in which apertures have been machined by chemical etching. Each wafer has one or several apertures. For simple profiles the wafers are identical. The apertures in adjacent wafers are angularly offset one with respect of the other for helical extrusion.</p> |
| 申请公布号 |
IT1108683(B) |
申请公布日期 |
1985.12.09 |
| 申请号 |
IT19780068725 |
申请日期 |
1978.07.20 |
| 申请人 |
LIGNES TELEGRAPHIQUES & TELEPHINIQUES |
发明人 |
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| 分类号 |
B29C47/12;D01D4/02;(IPC1-7):B29F/ |
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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