Extrusion & Post
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LDPE Film Winding Edge Wandering
Problem Phenomenon
The film roll end face is uneven and tapered.
Cause Analysis
Unstable tension, uneven contact roll pressure, and accumulation of film thin-thick edges.
Solution
①Stabilize tension; ②uniform contact pressure; ③solve TD thickness deviation first; ④check the deviation correction system.
Key Takeaway
Edge wandering = joint action of tension + thin-thick edges.
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