注塑成型典型缺陷形成原因及解决措施

Injection molding is a complex process involve material, mold, injection machine, processing parameters and many other factors, so the defects in injection molding products is inevitable. In this paper, common defects in injection molding were classified, including short shot, flash, filling imbalance, sink mark, weld line, flow mark, jetting mark, corona, burn mark, bubbles, silver mark, color change, whiten, crack, floating fibers, warp, etc. and the causes of every defect was analyzed from four aspects of material, mold, injection molding machine and processing parameters, and then the solutions were proposed.