Injection mold is simply batch molding in the process of injection molding processing. At this time, the injection mold processing method and process are particularly important. Without processing in accordance with the requirements of the rules, it is likely to damage the injection mold. To this end, Changzhou Mingchuang plastic industry provides injection mold processing method flow analysis: general, do not need to dry material. In some cases, they are baked for two hours at 80 ° C; Large molding temperature scale, heating, melting, curing speed, molding cycle is generally short; Temperature: barrel temperature is about 200℃, material temperature is too high, easy to appear silver wire, material temperature is too low, resulting in poor transparency.

Injection mold temperature control: mold temperature is generally 50-80℃; GPPS have good fluidity, do not need to apply high pressure in beer plastic (general injection pressure of about 10Mpa), avoid excessive and add internal stress of rubber parts - may cause cracking (especially after paint decoration) treatment); Properly increasing the injection speed can reduce the watermark, but because the injection pressure greatly affects the injection speed, too high a speed may cause problems such as sticking the mold during ejection or release and white cracks during ejection.

Appropriate back pressure: if the back pressure is too low, the screw is easy to spill into the air, the density of the particles in the barrel is very small, the plasticizing effect of the rubber particles is not good, affecting the apparent mass. Rubber parts (back pressure is generally 10-20kg/cm2); G) The mold is generally designed with a thin nozzle of 0.8-1.0mm. H) Glass fiber reinforced PS-GF30, barrel temperature 180? 275, mold temperature is 20? 80, the reduction rate is 0.1? 0.2. The density is 1.29 / cm3.