Material Drying
8 görüntüleme
PET Preform Acetaldehyde (AA) Odor
Sorun Belirtisi
After blowing, the bottle has an odor, affecting the taste of drinking water.
Neden Analizi
Acetaldehyde is produced by thermal degradation and hydrolysis during PET melt processing; excessive material temperature, too long residence, and high water content all increase AA generation.
Çözüm
①Control material temperature and residence time; ②fully dry to reduce hydrolysis; ③select a low-AA generation process; ④conduct AA content testing for beverage bottles.
Temel Çıkarım
Odor = degradation products; dual control of temperature and water.
Bu faydalı oldu mu?
0 kişi bunu faydalı buldu
Geri bildiriminiz için teşekkürler!