Extrusion & Post
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Uneven Tightness of LDPE Film Rolls
Problem Phenomenon
The film roll surface hardness is uneven, and the end face is star-shaped or chrysanthemum-shaped.
Cause Analysis
Accumulation of thickness deviation, improper tension taper setting, and uneven winding contact pressure.
Solution
①Solve thickness deviation first; ②optimize the tension taper curve; ③adjust contact roll pressure; ④check paper core quality.
Key Takeaway
Eighty percent of film roll problems come from the film's own thickness.
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