Molding Process
5 görüntüleme
High Haze of LDPE Film
Sorun Belirtisi
LDPE film has poor transparency and is hazy.
Neden Analizi
Internal haze comes from large crystallite size, external haze comes from surface roughness (melt fracture/uneven cooling); low melt temperature and slow air ring cooling both increase haze.
Çözüm
①Raise melt temperature; ②air ring quenching to reduce surface crystallization; ③avoid melt fracture (raise die temperature); ④select high-transparency grades.
Temel Çıkarım
Haze is divided into internal and external: adjust crystallization internally and surface externally.
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