Processing Machinery
7 visualizações
PVA internal black speck carbonization
Fenómeno do problema
PVA product interior shows 0.1-0.5mm black specks of carbonized material
Análise das causas
PVA heated for a long time in barrel dead zones and carbonized; carbon deposit at the screw head; raw material impurities
Solução
1) Lower processing temperature to reduce carbonization; 2) Regularly clean the screw and barrel; 3) Filter raw material to remove impurities
Conclusão principal
Black specks are caused by thermal carbonization and carbon deposit; temperature reduction and regular cleaning are the key
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!