Extrusion & Post
12 مشاهدة
CEF extrusion film winding wrinkling
ظاهرة المشكلة
After the CEF extruded film is wound, transverse wrinkles and longitudinal creases appear
تحليل الأسباب
The film tension is uneven and fluctuates ±20%; the film thickness is uneven, causing inconsistent stretching of each section; the shrinkage rate after cooling is anisotropic
الحل
1) Automatic tension control system to stabilize the winding tension; 2) Improve the film thickness uniformity to ±5%; 3) Adjust the guide roller parallelism <0.05mm/m; 4) Fully cool the film to <30°C before winding
الخلاصة الأساسية
Film wrinkling is caused by tension fluctuations and uneven thickness; automatic tension control and homogenization are the key
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