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PC products injection molding processing molding
polycarbonate (PC) （PC） in recent years in China 消费迅 speed growth, year amount already from 2000 year 15 10,000 tons increase to 75 10,000 tons, expected 2006 year is 86 10,000 tons, year growth 达30% above. China polycarbonate (PC) market fast speed growth, main/primary is due to electronics product, in cationic light sheet/plate, CD and DVD light and non one-time property use water and food container 拉动. its structure large is: electronics electrical 包括计算 machine parts 42%, in cationic light sheet/plate 26%, light 盘13%, use water and food container 10%, composite/compounding material and automotive industrial and other field/area 10%. in the future year has main/primary field/area still will maintain high speed growth 势头, machine and use electrical appliances growth, field/area future for PC year growth rate is 10%~12%, 公路, iron 路, machine and construction year growth rate is 10%~15%, future year light for PC demand is 20%, future automotive industrial will is main/primary force.
1 考虑PC thermally conductive property high effect/influence. processing temperature degree difficult control, processing 时“ delamination ” phenomenon, 设置适当 temperature degree control can melt rise temperature.
2 small control temperature degree. using/adopting 先进 矿 material filling add hot 圈（ belt/tape ） and 自动调谐 control device improvement temperature degree control; attention/notes material screw temperature degree control, 改进银纹, and other defect.
3 use new 专业化 screw 头, 改进塑化时 剪切发生, ensure material material property 输送.
4 using/adopting PC specialized injection molding screw. using/adopting in and other long degree add material 段（7 螺旋） and tool has relatively long （8~10 螺旋） and shallow pressure shrink screw.
5 use PC injection molding specialized screw 头止流阀（NRV）. PP止流阀（NRV）会造 formed melt material degree 剪切, must 配置“倒吸”回阀 base/seat.
6 screw add material need use 镀铬螺纹.
7 每次停 machine 时, 彻底清理 injection molding machine machine and screw, 否则, easy 发生止流阀 fracture and screw plating 剥落.
8 water separation control. 5~8 month gas wet production must dry material.
