发明名称 |
Method and apparatus for high speed extrusion of thermoplastic materials |
摘要 |
In the process of extruding tubular thermoplastic film or tape, the production rate can be improved by using a smooth support plug to stabilize and shape the extrudate after it has been cooled and at least partially solidified. A principal function of the support plug is to assist in supporting the long slender column of partially solidified extrudate which is above the plug. The result is a significant increase in the output of the extrusion process.
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申请公布号 |
US4287151(A) |
申请公布日期 |
1981.09.01 |
申请号 |
US19760749861 |
申请日期 |
1976.12.13 |
申请人 |
W. R. GRACE & CO. |
发明人 |
ESAKOV, MICHAEL D.;HUDGENS, JR., DAVID C.;STRINGER, FREDERICK D. |
分类号 |
B29C47/88;B29C47/90;(IPC1-7):B29F3/08 |
主分类号 |
B29C47/88 |
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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