Shanghai Daoqin Plastics Co., Ltd.

PVC injection molding processing process features:PVC processing temperature degree scope/range narrow （160-185℃）, processing relatively difficult, process requirements high, processing generally lower can use drying （若需 drying, in 60-70℃ lower 进行）. mold temperature relatively low （20-40℃）. PVC processing easy generate gas marks, and other, need control good processing temperature degree. screw speed low （50% below/following ）, amount need less, back pressure can high. mold gas need good. PVC material in high temperature in time can ultra- 15 separation 钟. relatively PVC宜 use large water product 进胶, using/adopting “ in pressure, slow speed, low temperature ” conditions molding processing relatively good. relatively PVC product easy viscous front 模, mold opening speed degree （第一段）不宜 fast, water in runner cold material 穴处做 formed 拉扣式 relatively good, 啤PVC material machine front and use PS water material （ or PE material ）清洗炮筒, anti 止PVC separation understanding generate Hd↑,腐蚀 screw, inner 壁.