Mold injection molding processing method

When injection mold processing, are generally formed by batch, and so our team mould injection mechanic method and process is very seriously, if at the time of processing, not according to the requirement of the regulations, will damage the plastic injection mould and. To this end, the bearing network provides mould injection molding process analysis processing method: 1, generally do not need to dry raw materials, individual condition of 80 ℃ baking 2 hours; 2, molding temperature range is larger, heating and curing speed, melting, molding cycle general short; Temperature parameters: the cylinder temperature about 200 ℃, the material temperature too high susceptible to silver, the material temperature is too low will make poor transparency; 3, mold temperature control: mould temperature is in commonly 50 - 80℃； 4, GPPS liquidity is very good, does not require high pressure in the plastic beer ( Usually injection pressure around 10 mpa) To avoid excessive and add glue pieces of internal stress - — May cause cracking ( Especially after the paint decoration process) ; 5, high injection speed appropriate to decrease water lines, but due to the injection speed is influenced by the injection pressure is big, high speed may lead to put front or sticky mold and the mold ejection when top white tip crack problems; 6, the appropriate back pressure: if low back pressure, screw rotation is easy to spill into the air, within the cylinder material density is small, colloidal particle plasticizing effect is not good, glue pieces of apparent quality, Take 10 - general back pressure 20kg/cm2) ; g) Die nozzle on the general design of thin to 0. 8 - 1. 0mm. h) PS - glass fiber reinforced type GF30, cylinder temperature is 180 ~ 275, mold temperature is 20 ~ 80, molding shrinkage of 0. 1 to 0. 2. Density of 1. 29/cm3。