发明名称 |
HEAT EXCHANGER TUBING WITH YARN TURBULATOR |
摘要 |
<p>A process and the product thereof, wherein thermoplastic tubing for use in a heat exchanger is extruded with a multifilament yarn inside to act as a turbulator. The extrusion is started with a small rod or a lead-in wire pushing the end of the yarn through the die into the tubing to a place where it adheres to the inner wall of the tubing as it is cooling, then the yarn is pulled into the tubing as it is extruded. The part of the tubing with the lead-in wire is cut off, leaving tubing with efficient turbulation.</p> |
申请公布号 |
EP0975927(A1) |
申请公布日期 |
2000.02.02 |
申请号 |
EP19980916715 |
申请日期 |
1998.04.17 |
申请人 |
DUPONT CANADA INC. |
发明人 |
CESARONI, ANTHONY, JOSEPH;FLETCHER, ELDON, LAWRENCE |
分类号 |
B29C47/02;B29C47/12;B29C47/28;F28F13/12;F28F21/06;(IPC1-7):F28F21/06 |
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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