Extrusion & Post
4 مشاهدة
Poor transparency and haze in PET film
ظاهرة المشكلة
PET biaxially stretched film has poor transparency and a high haze value.
تحليل الأسباب
The content of additives (slip agents, antiblocking agents) in the raw material is too high or particle size is too large; improper stretching temperature causes incomplete crystallization.
الحل
Select low-haze grade PET raw material; optimize stretching temperature (longitudinal 90-110°C, transverse 100-120°C); control cooling rate.
الخلاصة الأساسية
PET film transparency is influenced by both raw material formulation and the stretching process.
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!