发明申请
- 专利标题： METHOD OF CONTINUOUSLY MANUFACTURING A COMPOUND PIPE COMPRISING A PIPE SOCKET AND APPARATUS FOR IMPLEMENTING THE METHOD
- 专利标题（中）： 连续制造包含管接头的复合管和实施方法的方法
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申请号： US12395108申请日： 2009-02-27
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公开(公告)号： US20090236032A1公开(公告)日： 2009-09-24
- 发明人: Ralph Peter Hegler
- 申请人： Ralph Peter Hegler
- 优先权： EP08004992.7 20080318
- 主分类号： B32B37/00
- IPC分类号： B32B37/00
摘要：
During the manufacture of a compound pipe, which is composed of an internal tube and a corrugated external tube, a slight overpressure relative to atmospheric pressure pa is applied to the inside of the internal tube, which is guided across a calibrating mandrel during the manufacture. At the transition to the formation of a pipe socket, a partial vacuum p3 relative to atmospheric pressure pa is temporarily applied the internal tube.
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