Production & Quality
6 مشاهدة
Acetaldehyde increase in PET bottles during storage
ظاهرة المشكلة
The AA content of PET bottles increases over time during storage, exceeding shelf-life standards.
تحليل الأسباب
Residual thermal history in the preform slowly releases acetaldehyde; insufficient crystallinity causes oxygen permeation that promotes AA generation; storage temperature is on the high side.
الحل
Reduce preform processing temperature to reduce initial AA; increase crystallinity to reduce oxygen permeation; store at low temperature <30°C; use oxygen-barrier bottle design.
الخلاصة الأساسية
PET bottle AA content changes dynamically and needs full life-cycle control.
هل كان هذا مفيدًا؟
0 شخص وجدوا هذا مفيدًا
شكرًا لك على ملاحظاتك!