发明申请
US20120085498A1 Apparatus for continuously producing a compound pipe comprising a pipe socket
审中-公开
用于连续生产包括管座的复合管的设备
- 专利标题： Apparatus for continuously producing a compound pipe comprising a pipe socket
- 专利标题（中）： 用于连续生产包括管座的复合管的设备
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申请号： US13327232申请日： 2011-12-15
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公开(公告)号： US20120085498A1公开(公告)日： 2012-04-12
- 发明人: Ralph Peter Hegler
- 申请人： Ralph Peter Hegler
- 优先权： EP08004992.7 20080318
- 主分类号： B29C65/02
- IPC分类号： B29C65/02 ; B29C47/00
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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