发明申请
- 专利标题： Thermoplastic tube
- 专利标题（中）： 热塑管
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申请号： US11723058申请日： 2007-03-16
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公开(公告)号： US20070164486A1公开(公告)日： 2007-07-19
- 发明人: Arjan Dirk Van Lenthe , Jan Hendrik Prenger , Jan Visscher
- 申请人： Arjan Dirk Van Lenthe , Jan Hendrik Prenger , Jan Visscher
- 专利权人： Wavin, B.V.
- 当前专利权人： Wavin, B.V.
- 优先权： NL1011469 19990305; NL1012032 19990511
- 主分类号： B29C55/26
- IPC分类号： B29C55/26 ; B29C47/00 ; F16L11/00
摘要：
A method for producing a tube section from thermoplastic material, in which a tube section is extruded by means of an extruder which is provided with an extruder die having an inner core, which inner core defines an axial hollow space in the tube section, the tube section coming out of the extruder die downstream of the extruder die being internally cooled by means of an internal cooling member and externally cooled by means of an external cooling device. Immediately after the tube section leaves the extruder die, the internal cooling member brings about internal cooling of the tube. The external cooling device is positioned downstream of the internal cooling member, so that the external cooling of the tube section is brought about after the internal cooling.
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