发明名称 |
Extruder head |
摘要 |
An extruder head for the extrusion of tubular preforms having single-layer or multiple-layer walls, from plastics material which has been plasticized in extruders. The extruder head utilizes the so-called coextrusion system. The extruder head includes a plurality of equal or similar head parts which can be optionally placed one behind the other and each have a central annular discharge and/or passage duct. Each of the head parts has at least one spirally extending distributor which leads via an annular gap to the discharge and/or passage duct. The ends of adjacent head parts facing one another have complementary engagement elements which are used to bring the discharge and/or passage ducts into axial alignment.
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申请公布号 |
US4889477(A) |
申请公布日期 |
1989.12.26 |
申请号 |
US19890330934 |
申请日期 |
1989.03.23 |
申请人 |
BATTENFELD FISCHER BLASFORMTECHNIK GMBH |
发明人 |
WORTBERG, JOHANNES;JUNK, PAUL B.;FRANKE, HARRY |
分类号 |
B29B11/10;B29C47/06;B29C47/20;B29C47/28;B29C49/04;B29C49/22;B29L22/00 |
主分类号 |
B29B11/10 |
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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