注塑产品设计依赖于均匀一致的壁厚，这样能最大程度的减小产品的变形与翘曲。

1，避免翘曲&nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ 2，避免缩痕&nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/3，筋与基面壁厚之比

避免翘曲&nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/ &nbsphttps://jiyisuliao.com/332494512359800-2/

缩痕

塑料熔体在模具型腔中的冻结，会从产品的表面（靠近模腔表面）向里逐渐凝固。这样较厚区域就会产生向里的拉应力（收缩的原因），从而在产品的外表面出现缩痕的问题。

产品翘曲

另外，由于较薄区域比厚的地方凝固的快，这样可能在较厚区域与较薄区域之间产生内应力，从而导致产品翘曲。

使用斜坡过度和角撑板来减少翘曲

由壁厚阶梯变化产生的内应力导致的翘曲可以通过采用“斜坡”来改善。

使用角撑板会在产品拐角处提供支撑（增大刚度），从而有利于避免翘曲。

避免缩痕

由于像上文描述的同样的凝固物理原理，在厚壁和壁厚不均的地方通常会产生缩痕。

减小和均化的壁厚有利于避免缩痕。

筋与基面壁厚之比

虽然基面上的薄筋（相对来说）能够增加产品的刚度，但也会在产品的外表面产生缩痕（筋的对侧）。图示的经验性的指导原则有利于避免这种问题的出现。

检查加强筋与基面壁厚的比值－防止缩痕，加强筋的厚度大约应设计为产品基面壁厚的1/2。