Processing Machinery
4 görüntüleme
Screw seizure of PET extruder
Sorun Belirtisi
The screw cannot rotate (seizes) when restarting after a shutdown during PET processing.
Neden Analizi
The material is not fully purged at shutdown; after cooling, PET crystallizes and solidifies between the screw and the barrel, locking the screw.
Çözüm
Before shutdown, purge and replace PET with purging material or PP; shut down after the barrel cools down; before startup, first heat to processing temperature and hold for 30min.
Temel Çıkarım
PET screw seizure is a serious equipment accident and can be avoided with standardized shutdown procedures.
Bu faydalı oldu mu?
0 kişi bunu faydalı buldu
Geri bildiriminiz için teşekkürler!