Extrusion & Post
13 visualizações
EAA vacuum section overflow
Fenómeno do problema
Material overflow at the vacuum section of EAA extrusion, vent hole blocked
Análise das causas
EAA melt viscosity low and overflowing at the vacuum section; vacuum section temperature too high making viscosity even lower and aggravating overflow; improper vent hole design
Solução
1) Reduce vacuum section temperature by 5-10°C to increase viscosity; 2) Add a baffle above the vent hole to prevent overflow; 3) Increase screw speed to accelerate conveying and reduce residence time
Conclusão principal
Overflow is caused by low melt viscosity; lowering temperature and adding a baffle is key
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!