| 发明名称 |
AN APPARATUS AND METHOD FOR EXTRUDING ETHYLENE POLYMERS |
| 摘要 |
A novel extruder screw having at least three segments wherein the pitch remains constant in each segment and changes abruptly from one segment to the following segment and wherein the pitch ratio divided by the depth ratio is greater than 2/3. |
| 申请公布号 |
EP0051880(A3) |
申请公布日期 |
1983.01.26 |
| 申请号 |
EP19810109633 |
申请日期 |
1981.11.11 |
| 申请人 |
UNION CARBIDE CORPORATION |
发明人 |
MILLER, JOHN CLARK;BURNETT, ARCHIBALD LOUIS |
| 分类号 |
B29B7/00;B29C47/00;B29C47/38;B29C47/60;(IPC1-7):29F3/02;29F3/00 |
主分类号 |
B29B7/00 |
| 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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