Processing Machinery
7 visualizações
PVA internal unmelted particles
Fenómeno do problema
PVA product interior shows unmelted transparent or translucent particles
Análise das causas
Screw plasticizing capacity insufficient, temperature on the low side; feeding amount too large exceeding the plasticizing capacity; PVA melting temperature on the high side
Solução
1) Raise processing temperature to ensure full melting; 2) Reduce feeding amount to match the plasticizing capacity; 3) Increase screw mixing section
Conclusão principal
Unmelted particles are caused by insufficient plasticizing; raising temperature and reducing feeding are the key
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!