三型聚丙烯管件生产工艺及管径控制

Production process of polypropylene type3(PP-R) fittings and pipe diameter control

通过简介管件生产工艺 ,探讨注射压力、冷却时间及保压压力和保压时间对管件尺寸的影响 ,较为详细地论述了注塑工艺参数与管件收缩率之间的相互关系 ,并针对三型聚丙烯管件特性 。

This paper describes in detail the relationship of injection technological parameter and fittings contraction ratio, through synopsis production process of fittings, inquired into injection pressure and cooling time and protective pressure and protective times impacting on fittings dimension Principles of regulating technological parameter should be put forward to the characteristic of polypropylene type 3 fittings