发明名称 |
BEHANDLUNGSVERFAHREN FÜR EXTRUDIERTE KUNSTSTOFFROHRE UND EXTRUSIONSANLAGE DAFÜR |
摘要 |
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. |
申请公布号 |
DE69603595(T2) |
申请公布日期 |
1999.12.30 |
申请号 |
DE1996603595T |
申请日期 |
1996.05.02 |
申请人 |
WAVIN B.V., ZWOLLE |
发明人 |
VISSCHER, JAN;PRENGER, JAN;SCHUURMAN, JOHAN |
分类号 |
B29C47/88;B29C47/90 |
主分类号 |
B29C47/88 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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