发明名称 |
Method for manufacturing a metal-plastics composite tube and apparatus for carrying out said method |
摘要 |
The present invention relates to a method and apparatus for obtaining a metal-plastics composite tube. A layer of grafted polyethylene which comes directly into contact with the metal and a layer of cross-linkable polyethylene are extruded simultaneously at least inside this tube, with the aid of an extrusion nozzle having an annular conduit with two distinct coaxial inlets and a single outlet. The invention results in a composite tube having the malleability of lead, the rigidity of copper and a total inertia with respect to the aggressive agents flowing therein.
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申请公布号 |
US4370186(A) |
申请公布日期 |
1983.01.25 |
申请号 |
US19800218261 |
申请日期 |
1980.12.19 |
申请人 |
NADIA NICOLL, SOCIETE A RESPONSABILITE LIMITEE |
发明人 |
BLANDIN, JEAN-CLAUDE;RICHARD, LOUIS |
分类号 |
B29C47/02;(IPC1-7):B29D23/04;B29D23/10 |
主分类号 |
B29C47/02 |
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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