夹链自封膜泡成型的关键技术

The critical Technology of the Formation of the Auto sealing Holding plastics Hap Principle and Control for Blown Extrusion of Film with Filler and Groove Seal Strap

本文从夹链自封膜泡成型的特殊性入手,通过对冻结区的讨论,提出离模径缩比与冷冻线位置是成型中的关键,决定着棱的预拉伸及预定型状态。

This article mainly deals with the principle and control for blown extru-sion of film with filler and groove seal strap.The critical points in this pro-cess are the necking ratio and the location of frost line,which control theprestretching and presiging states of the fillet.