• 塑料管材挤出生产技术的定型
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塑料管材挤出生产技术的定型

  • 29/11/2017 09:49:14

塑料管材挤出生产技术的定型 定型方式可分为两大类:即外径定型和内径定型。我国塑料管材中空板设备的生产绝大多数采用外径定型。冷却装置有水槽或喷淋水箱。 (一)定型装置 1.真空定径法真空法定径是指管外抽真空使管材外表面吸附在定型套内壁冷却定型的方法.真空定径技术…

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