PC plastic injection molding process has a very thin bubble of gas belonging vacuum bubbles. Generally Mould factory, if you have found bubbles in the mold moment belongs to gas interference. It is due to the formation of vacuum bubbles filled into plastic insufficient or lower pressure. In the rapid cooling effect of the mold, and the cavity then angle melt stretch, resulting in the loss of volume results. (1) Set the gate in a thick part of the metal mold parts to improve the nozzle, runner and gate flow conditions, to reduce the pressure of consumption. (2) improve mold venting condition. (3) increase the injection energy: pressure, speed, time and quantity, and increase the back pressure processing metal mold, so filling fullness. (4) increase the smooth flow of the material temperature. Reduce material temperature to reduce shrinkage, an appropriate increase in mold temperature, especially in parts of the partial vacuum bubbles forming mold temperature. 4, the thermal conductivity of the thermal conductivity of small plastic is very small, about the metal 1 / 500-1 / 600 thermal conductivity foam only 0.02-0.046W / mK Mould factory, which is about 1/1500 of metal, concrete 1/40, 1/20 of an ordinary brick is an ideal insulation material .5, chemical stability plastics for general acid, alkali, salt and grease has good corrosion resistance than the metal material, and some inorganic material better, especially suitable for chemical plant doors and windows, floors, walls, etc. Mould Company, Rady Industry (certified), Yangjiang City Hardware mold provided by the Dongguan City Run Di Industries Limited. Di Industrial Co., Ltd. of Dongguan City Run (www.dgrundi.com) Dongguan, Guangdong, household plastic products leader, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Industry leaders at Rady staff warmly welcome all inquiries negotiations to create Rady Industrial better future.