Molds & Tooling
7 visualizações
Material venting from the vacuum port of PET extruder
Fenómeno do problema
Material vents from the vacuum vent port of the PET twin-screw extruder, and material overflows from the vacuum port.
Análise das causas
The vacuum port position is improper (at a location with high melt pressure); vacuum port design is unreasonable; screw speed is on the high side and the filling degree of that section is high.
Solução
Adjust the vacuum port position to a low-pressure location; optimize vacuum port design; appropriately reduce screw speed or increase the temperature of that section.
Conclusão principal
PET extrusion vacuum port venting is closely related to screw configuration design and process parameters.
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!