Molding Process
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LLDPE film haze
Problem Phenomenon
High transparency requirements cannot be met; the film appears hazy.
Cause Analysis
LLDPE crystallization and surface state affect transparency; surface melt fracture or uneven cooling aggravates haze.
Solution
①Solve sharkskin/melt fracture; ②rapid cooling with air ring; ③select a high-transparency grade (metallocene); ④improve melt temperature uniformity.
Key Takeaway
Haze = surface + crystallization; mLLDPE is the upgrade path.
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