Shanghai Daoqin Plastics Co., Ltd.

PS injection molding processing process brief introduction: PS polystyrene (PS) [HIPS: high impact polystyrene (PS), dry 胶. material （HB）/ anti material （94V2）]

typical applications scope/range:
product packaging, use product （餐 tool, pallet and other ）, electrical （ transparent container, light dispersion device, insulation film and other ）.

injection molding process conditions:
drying 处理: remove non 储存不当, usually need drying 处理. if need drying, drying conditions is 80C, 2~3 small 时.
熔化 temperature degree: 180~280C. for/regarding flame retardant type material its upper is 250C.
mold temperature degree: 40~50C.
injection pressure: 200~600bar.
injection speed degree: use fast speed injection speed degree.
runner and gate: can use has type type gate.

chemical and material features:
large more 数商业 use PS都 is transparent, non 晶体材 material. PS tool has non good stability property, heat stabilized property, optical features, electrical insulation features and very micro small wet toward. it can resistant water, dilute 释 无 machine acid, can by strong/high oxidation acid concentrated acid 腐蚀, and can in has machine solvent agent in deformation. type shrinkage rate in 0.4~0.7％ between.

PS melting point is 166℃, processing temperature degree generally in 185-215℃ is 宜, temperature degree 180~280℃, for/regarding flame retardant type material its upper is 250℃, separation understanding temperature degree is 290℃, its processing temperature degree scope/range relatively wide.

mold temperature degree 40~50℃, injection pressure: 200~600bar, injection speed degree use fast speed injection speed degree, runner and gate can use has type type gate.

PS material in processing front, remove non 储存不当, usually need drying 处理. if need drying, drying conditions is 80C, 2~3 small 时. 因PS ratio hot low, its made as mold dispersion hot can very fast cold solid 化, its cooling speed degree ratio generally raw materials need fast, mold opening time can 早一. its time and cooling time relatively short, molding cycle time decrease/reduce 一; PS products gloss mold temperature increase good.