Extrusion & Post
9 Aufrufe
Large Current Fluctuation of EVOH Extruder
Problembeschreibung
During EVOH extrusion, main motor current fluctuates ±15-20%, affecting extrusion stability and product quality
Ursachenanalyse
Feeding amount unstable; EVOH melt viscosity is temperature-sensitive, temperature fluctuations cause large viscosity changes; unsuitable screw structure causing uneven melting
Lösung
1) Loss-in-weight feeder for stable feeding; 2) Precision temperature control ±1°C; 3) Select dedicated screw; 4) Increase screw mixing section to ensure uniform melting
Wichtigste Erkenntnis
Current fluctuation is caused by unstable feeding, poor temperature control and unsuitable screw; system optimization is key
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