Extrusion & Post
5 مشاهدة
Wrinkles in PET film winding
ظاهرة المشكلة
Transverse or longitudinal wrinkles appear when PET film is wound, increasing the scrap rate.
تحليل الأسباب
Winding tension control is improper (too large, too small or uneven); uneven film thickness causes uneven stress distribution; roller surface friction is improper.
الحل
Optimize the winding tension curve (tapered tension control); improve thickness uniformity; use spreading rollers and a web guide system.
الخلاصة الأساسية
PET film winding quality is a comprehensive reflection of thickness, tension and equipment precision.
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