Defects In Color And Glossiness Of Household Appliances Mould Schools & Education
Generally, the surface of plastic products obtained by this injection molding method has good glossiness and beautiful colors, but in the actual injection molding process, many products produced by Household appliances mould ... moreGenerally, the surface of plastic products obtained by this injection molding method has good glossiness and beautiful colors, but in the actual injection molding process, many products produced by Household appliances mould https://www.furnituremould.com/ have great defects in color and glossiness. Apart from the hard factors such as plastic raw materials, colorants and the smoothness of the mold surface, what other reasons will cause this situation?
(1) poor mold finish, rust on the cavity surface, and poor mold exhaust.
(2) The gating system of the mold is defective, so the cold well, runner, polishing runner, shunt and gate should be enlarged.
(3) The material temperature and mold temperature are low, so local heating method of gate can be used when necessary.
(4) The processing pressure is too low, the speed is too slow, the injection time is insufficient, and the back pressure is insufficient, resulting in poor compactness and dark surface.
(5) Plastics should be fully plasticized, but the... less
