Molding Process
8 visualizaciones
High Haze of LDPE Film
Fenómeno del problema
LDPE film has poor transparency and is hazy.
Análisis de la causa
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.
Solución
①Raise melt temperature; ②air ring quenching to reduce surface crystallization; ③avoid melt fracture (raise die temperature); ④select high-transparency grades.
Conclusión clave
Haze is divided into internal and external: adjust crystallization internally and surface externally.
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!