During the production of PVC calender biaxial stretching film,some problems,such as too big constringency,uneven thickness,too many holes and etc.

• 在PVC压延双向拉伸薄膜生产中,经常会遇到诸如收缩性过大、薄膜薄厚不均、穿孔多等缺陷,严重时会造成薄膜大量浪费、客户无法使用甚至无法正常生产。