Extrusion & Post
14 visualizaciones
DSTDP vacuum vent section material overflow
Fenómeno del problema
DSTDP extrusion vacuum vent section material overflow, vent hole clogged
Análisis de la causa
DSTDP melt viscosity low, overflowing at the vacuum vent section; vacuum vent section temperature on the high side, viscosity even lower, aggravating overflow; vent hole design improper
Solución
1) Lower vacuum vent section temperature 5-10°C to increase viscosity; 2) add baffle above the vent hole to prevent overflow; 3) increase screw speed to accelerate conveying and reduce residence
Conclusión clave
Material overflow is caused by low melt viscosity; temperature reduction and baffle are key
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!