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Title:
【発明の名称】押出成形プラスチック形材を処理する方法およびそのための押出成形装置
Document Type and Number:
Japanese Patent JPH11508196
Kind Code:
A
Abstract:
Method for treating an extruded plastic section having a hollow space and installation suitable for carrying out such a treatment. The installation includes an extruder which has a core for forming the hollow space in the section and, at a distance downstream from the extruder in the extrusion direction of the section, a closing means having a rigid circumferential wall. The installation also has a first conduit connected to a supply orifice which is provided in the circumferential wall of the closing means, a fluid feeder connected to the first conduit and a second conduit connected to a discharge orifice. The discharge orifice is upstream of the supply orifice to provide a fluid film flowing opposite to the extrusion direction between the circumferential wall of the closing means and the extruded section.

Inventors:
Fitschel, Yang
Plenhel, Jan Hendrick
Shurman, Johann
Application Number:
JP53320096A
Publication Date:
July 21, 1999
Filing Date:
May 02, 1996
Export Citation:
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Assignee:
Veavin Bethrothem
International Classes:
B29C47/88; B29C48/90; (IPC1-7): B29C47/90; B29C47/88
Attorney, Agent or Firm:
Chika Takagi (2 outside)