The requirement between the roughness of the plastic part and the mold is that the mold must be one level higher, and the surface roughness of the plastic part is also related to the raw materials of the plastic part used. Some materials for injection molding will never meet certain roughness requirements, so Have to consider the issue of injection molding raw materials. Reasons for poor processing of injection molds:
1. The problems of the injection mold itself, including the processing and design defects of the mold itself, are also related to the injection molding process (such as temperature setting, pressure adjustment, etc.) and materials;
2.The injection mold has scratches;
3.The problem of melting marks in injection molds;
4. The corners of the plastic parts are not well designed, for example, they are not designed with rounded corners, or the rounded corners are too small, and the gate design is not reasonable.