Extrusion & Post
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LLDPE Stretch Film Insufficient Self-Adhesion
Problem Phenomenon
Layers of stretch wrap film do not stick, and pallet wrapping is loose.
Cause Analysis
LLDPE stretch film relies on special tack (the grade itself or the tackifier PIB); insufficient tackifier or the wrong grade results in no stickiness.
Solution
① Select special stretch film grades; ② evaluate PIB tackifier addition; ③ control film thickness and storage aging; ④ perform tack verification in low-temperature environments.
Key Takeaway
Stretch film tack = grade + tackifying system.
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