Extrusion & Post
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LLDPE film winding wrinkles
Problem Phenomenon
Film roll wrinkles, uneven end face.
Cause Analysis
Thickness deviation + improper tension control; poor bubble centering.
Solution
①Solve thickness deviation; ②optimize tension taper; ③center the bubble; ④adjust the spreading roller.
Key Takeaway
For winding problems, first fix the film itself.
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