塑胶产品缩痕、 空洞产生原因及改善方法

缩痕与空洞是塑胶产品常见的产品质量问题，文章分析了其产生的原因，并提出相应的改善原则：包括修改产品几何特征、浇口位置及大小以及成型工艺参数等方面。同时采用均匀设计方法，利用Moldflow软件建立仿真模型，进行有限的仿真实验来获得较优的改善方案。最后通过实际产品案例进行了应用验证，结果表明该方法可有效地改善缩痕与空洞缺陷。

Causes and Solutions of Sink Mark and Voids in Plastic Products

This paper summarized the causes of sink mark and void in plastic product, and put forward the corresponding solutions including modification of the part geometry, gate location and size as well as processing parameters etc. It is also demonstrated how to find the optimal scheme and its parameters with Uniform Design method and simulation model with Moldflow software. This method has been testified succesuffully in many cases. The results show that the method can be effectively used to find better improvment plan.