Objective: removing the phenomenon of shrinkage and partial, and improving the inter-quality of Medicinal package using PVC rigidity slice in use.

前言：目的：消除药品包装用pvc硬片使用中收缩、走偏现象，提高产品内在质量。

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The abnormal phenomenon often existing in the production of the rigid PVC pipe, the reason and its solving method are put forward.

同时提出了硬质聚氯乙烯管材生产中经常出现的异常现象及其形成原因和解决办法。

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