In order to reduce the splash causing in the process of storage and window forming of UPVC plastic profiled material, introduced the causing reason of colored patches and its prevent solution.

• 为了减少硬质聚氯乙烯(UPVC)塑料异型材(以下简称塑型材)在储存、成窗的过程中产生的色斑,介绍了色斑产生的原因及其预防措施。