Causes of Warping and Deformation of Injection Products
Warping is one of the common defects of plastic products because the shape of the custom plastic injection profiles deviates from the shape of the mold cavity. There are many reasons for the warping deformation, which cannot be solved by the process parameters alone. The following is a brief analysis of the factors affecting the warping deformation of injection products. 1. The effect of mold structure on warpage of products. In terms of molds, the main factors affecting the deformation of plastic injection profiles are the pouring system, cooling system and ejection system. Gating system. The position, form, and quantity of the gate of the injection mold will affect the filling state of the plastic in the mold cavity, resulting in deformation of the plastic product. The longer the melt flow distance, the greater the internal stress caused by the flow and shrinkage between the frozen layer and the central flow layer; the shorter the flow distance, th...