Method for producing a plastics hollow object,申请号EP19980111386-传众专利搜索

Method for producing a plastics hollow object

申请公布号：EP0891850(A1)

申请号：EP19980111386

申请日期：1998.06.20

申请公布日期：1999.01.20

申请人：

KSB AKTIENGESELLSCHAFT

发明人：SCHREYER, HORST;PRECHTL, WOLFGANG;ZUBER, DIETMAR

分类号：B29C33/00;B29C33/44;B29C33/48;B29C43/42

主分类号：B29C33/00

摘要：In a process for moulding a plastic product with radial chambers inside axially closed walls a compression mould (1) is partially filled with powdered or granular plastic, an inner core (6) is located in the mould cavity behind the plastic and after heating the plastic is compressed. The core(6) is subsequently removed to reveal hollow chambers in the moulding. Also claimed are: (i) a mould having an inner core (6) comprising one or more parts which are destroyed after pressing or alternatively where the inner core is a reusable split core; and (ii) the use of the process for moulding closed rotary pump impellers.