聚氯乙烯内挤压挤出模具的设计  

Design of Mould by Pressing Inside for PVC

作　　者：李正光[1] 

机构地区：[1]四川省轻工工程学校,四川自贡643010

出　　处：《上海塑料》2008年第3期34-36,共3页Shanghai Plastics

摘　　要：传统的外挤压挤出模具应用非常广泛,经过改进设计,采用内挤压挤出模具,不但小巧玲珑,使用较小的压缩比,可减小制品的内应力,获得较高的外观及内在质量;相对于机筒,机头的反作用力小,有利于加工成型;成型段的尺寸可适当减少,有利于高速挤出成型等。The traditional mould by pressing outside has applied widely. After improving design and using mould by pressing inside, it is not only smaller, but can reduce the internal stress of products by using smaller compressed ratio and can get better extereior and internal quality. Compared with the mould tube, the reacting force of the mould head is smaller, facilitating moulding process. The size in the period of moulding can be reduced, facilitating extrusion moulding at high speed.

关 键 词：聚氯乙烯 外挤压挤出模具 内挤压挤出模具 设计 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]