steven's blog for plastic mold and plastic molding

How to deal with transparent plastic material PMMA,PC and PET injection molding Due to their high light transmittance, the requirement for transparent plastic surface need to be strict, it can not has any markings, voids, whitening, black spots, discoloration, poor gloss and other defects. Thus the whole injection molding process for raw materials, equipment, molds, and even product design, could be said very strict and sometimes even very special. Further more, because of most transparent plastic with high melting point, poor mobility, to ensure the surface quality of the products, it often needs make minor adjustments at high temperature, injection pressure, injection speed and other parameters, so that it could both fill  plastic injection mold  properly and will produce proper stress which would cause no deformation and cracking. How to dry the raw material Due to any impurities in plastics, they may affect the transparency of the product .Therefore on storage, tran...