Processing Machinery
7 visualizações
PVA material changeover residue
Fenómeno do problema
After PVA material changeover, the first 5-10 products contain residue of the previous material, color difference and performance deviation
Análise das causas
Large amount of previous material residue in the barrel and screw; incomplete cleaning, residue in dead zones; insufficient purging material amount
Solução
1) Increase purging material amount to 2-3 times barrel capacity; 2) Increase rotation speed and temperature during purging to accelerate removal; 3) Disassemble the screw for thorough cleaning of dead zones
Conclusão principal
Changeover residue is caused by incomplete cleaning; full cleaning and disassembly are the key
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!