发明名称 |
Method and device for extrusion of a gauged profiled strip made of thermoplastic polymer |
摘要 |
<p>During the extrusion of a sized (gauged) strip made of a thermoplastic, interruptions in the flow of molten material produce thickness non-uniformities in the profiled strip. The method of the invention provides for keeping a constant flow of molten material between the extruder (17) and the extrusion head (6). The device includes a three-way valve (30) which progressively directs the flow of molten material to a drain channel (35) when the extrusion head (6) stops. <IMAGE></p> |
申请公布号 |
EP0625420(B1) |
申请公布日期 |
1998.09.23 |
申请号 |
EP19940401029 |
申请日期 |
1994.05.10 |
申请人 |
SAINT-GOBAIN VITRAGE |
发明人 |
KOTTE, ROLF, DR.;CORNILS, GERD;STUMPE, THOMAS |
分类号 |
B29C47/08;B05C11/10;B29C47/02;B29C47/10;B29C47/72;B29C47/88;B29C47/92;F16K11/085;F16K11/087;(IPC1-7):B29C47/72 |
主分类号 |
B29C47/08 |
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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