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CN105172116B 用于制造双轴定向管子的方法和设备 有权

用于制造双轴定向管子的方法和设备
摘要：
本文公开了用于制造双轴定向管子的方法和设备，其中利用挤出机从热塑性材料挤出处于预成型件状况下的管子，所述挤出机具有挤出机模头，所述挤出机模头具有内模构件，所述内模构件在处于预成型件状况下的管子中形成内腔。处于预成型件状况下的管子经受温度调节。使用了扩张设备，所述扩张设备包括直径逐渐增大到最大直径的不可变形的扩张部分，所述扩张部分被所述管子接触，并且施加扩张力，从而在周向方向上形成经回火的管子的扩张部。所述方法包括：利用拉制设备在所述扩张设备上拉制经回火的管子，使得所述管子从处于预成型件状况下的管子转变为热塑性材料的双轴定向管子，所述双轴定向管子在所述管子的轴向方向和周向方向上定向。
摘要（英）：

A method for producing a biaxially oriented tube from thermoplastic material. A tube in preform condition is extruded from thermoplastic material using an extruder with an extruder die head having an inner die member forming a lumen in the tube in preform condition. A temperature conditioning is performed. Use is made of an expansion device having a nose end, which expansion device brings about expansion of the tempered tube in preform condition in circumferential direction. The method comprises drawing the tempered tube over the expansion device using a drawing device which is arranged downstream of the expansion device and acts on the tube, in such a manner that said tube is transformed from a tube in preform condition into a biaxially oriented tube with thermoplastic material which is oriented in axial direction and in circumferential direction of the tube, wherein said biaxially oriented tube is cooled. Use is made of one or more temperature sensors that sense the temperature of the tube in preform condition upstream of or at the nose end of the expansion device.

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