pvc发泡鞋料高温注塑表面起泡是何原因,

大概是PVC的熔体强度不够造成的。所谓的熔体强度是指PVC在熔融状态下的强度不够。
这种情况你可以试试添加POLYMSJ助剂，在PVC发泡是经常用到。

Presumably the melt strength of PVC is not enough. Melt strength refers to the so-called PVC in the molten state of the intensity is not enough.
In this case you can try adding POLYMSJ additive, foam is often used in PVC.

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