发明名称 |
VERFAHREN ZUR HERSTELLUNG EINES ROHRES AUS BIAXIAL ORIENTIERTEM THERMOPLASTISCHEM MATERIAL, DAS EINE INTEGRIERTE MUFFE AUFWEIST |
摘要 |
A method for forming an integral socket to a pipe made from biaxially oriented thermoplastic material is described. The pipe has a pipe body and is provided, at one or both ends, with an integral socket. The biaxially oriented thermoplastic pipe is subjected to a socket-forming operation comprising the steps of fixing both axial ends of the unheated end part of the pipe, heating the fixed end part to a suitable socket-forming temperature in one or more steps, and expanding the axially fixed end part with the aid of a fluid pressure in the interior of the end part and/or a vacuum on the outer side of the end part, which expansion may begin as early as during the heating of the end part. |
申请公布号 |
DE60107575(T2) |
申请公布日期 |
2005.11.24 |
申请号 |
DE2001607575T |
申请日期 |
2001.07.30 |
申请人 |
WAVIN B.V., ZWOLLE |
发明人 |
VAN LENTHE, ARJAN DIRK;PRENGER, JAN HENDRIK;VISSCHER, JAN;WORMALD, DUNCAN HAMILTON |
分类号 |
F16L21/00;B29C57/02;B29C57/04;B29C57/08;B29L23/00;(IPC1-7):B29C57/02 |
主分类号 |
F16L21/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|