Material Drying
5 views
PET Sheet Extrusion Crystallization Haze
Problem Phenomenon
PET sheet has poor transparency and haze.
Cause Analysis
Improper chill roll temperature causes sheet crystallization; or insufficient drying hydrolysis haze.
Solution
①Optimize chill roll temperature (quickly pass through the crystallization temperature zone); ②fully dry; ③stable extrusion temperature.
Key Takeaway
Sheet haze = cooling rate and moisture.
Was this helpful?
0 people found this helpful
Thank you for your feedback!