Extrusion & Post
13 visualizações
Unstable feeding in PU extrusion
Fenómeno do problema
PU extrusion feed amount fluctuates ±15%, causing unstable extrusion pressure and product dimensions
Análise das causas
Irregular PU pellet shape causes unstable filling rate of the feed screw; bridging or voids in the hopper; feed screw design unsuitable
Solução
1) Use loss-in-weight feeder to precisely control feed amount; 2) Install vibrator on hopper to prevent bridging; 3) Granulate PU to uniform particle size of 2-3mm; 4) Change feed screw to special design
Conclusão principal
Unstable feeding is caused by particle characteristics; loss-in-weight feeding and anti-bridging are the core
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!