发明名称 WERKWIJZE VOOR HET EXTRUDEREN VAN EEN HOL KUNSTSTOFPROFIEL.
摘要 1. A process of extruding hollow plastics sections (24) by means of an extruding machine having a mandrel (5) arranged in its extruder die ring, in which a flow of gas is maintained in the hollow section in a direction (B) opposite to the direction of extrusion, the gas being conducted away through at least one channel (9) arranged in the mandrel, characterized in that during extrusion, the gas flow is maintained in the entire cavity section of that part of the extruded section (24) which is not cut off, gas entering that part of the extruded section through its free end (29).
申请公布号 NL8105045(A) 申请公布日期 1983.06.01
申请号 NL19810005045 申请日期 1981.11.07
申请人 STAMICARBON B.V. TE GELEEN. 发明人
分类号 B29C47/88 主分类号 B29C47/88
代理机构 代理人
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