发明名称 |
VERFAHREN UND VORRICHTUNG ZUM KÜHLEN VON EXTRUDIERTEN HOHLEN GEGENSTÄNDEN |
摘要 |
The invention relates to a method and an arrangement for cooling an extruded hollow product. According to the invention, the extruder (1) is provided with means for sucking air through the pipe (2). The air to be sucked is thus in contact with the inner surface of the pipe (2), cooling the pipe from the inside. Therefore the cooling of the pipe (2) can be realized in an efficient and simple manner. By arranging the sucking to occur from the middle of the conical extruder (1), no weld line will be formed in the extruded product, and the extruder (1) can be cooled effectively from the inside. According to the invention, the heat contained by the air that has been sucked through the pipe (2) can also be utilized. |
申请公布号 |
DE69714731(T2) |
申请公布日期 |
2003.04.30 |
申请号 |
DE1997614731T |
申请日期 |
1997.04.17 |
申请人 |
UPONOR INNOVATION AB, FRISTAD |
发明人 |
KIRJAVAINEN, KARI;JAERVENKYLAE, JYRI |
分类号 |
B29C47/88 |
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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