发明名称 |
Method and apparatus for incorporating lumens into the wall of a tubular extrusion |
摘要 |
A polymer extrusion head for forming continuous shapes having one or more lumens therein. The head includes an extrusion mandrel and die. At least one lumen pipe is disposed radially through a port in the die to intersect the polymer flow in the annular region between the tip and the die. The lumen pipe is a welded assembly having a 90° turn formed as a mitered joint with zero bend radius. The lumen pipe is held in a pin vise engaged in the die such that position of the lumen pipe may be readily adjusted. Axial and radial positions are established during assembly by means of a gauge block. A plurality of lumen pipes may be accommodated for a plurality of lumens by a manifold distribution system including individual lumen pipe assemblies.
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申请公布号 |
US7163388(B2) |
申请公布日期 |
2007.01.16 |
申请号 |
US20040849341 |
申请日期 |
2004.05.19 |
申请人 |
CANGEN HOLDINGS, INC. |
发明人 |
ANAND PREM;CHAPIN JOSEPH T. |
分类号 |
B29C47/06;B29C47/20;B29C47/22;B32B1/08 |
主分类号 |
B29C47/06 |
代理机构 |
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代理人 |
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地址 |
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