Extrusion & Post
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EMA screw slippage
Fenómeno del problema
Screw slippage during EMA extrusion with feed not advancing and output dropping sharply
Análisis de la causa
EMA pellets melt too early in the feed section forming a lubricating film causing screw slippage; feed section temperature too high
Solución
1) Lower feed section temperature by 10-15°C to delay melting; 2) Deepen feed section flights to increase gripping force; 3) Dry pellet surface to reduce lubrication
Conclusión clave
Screw slippage is caused by premature melting; lowering feed section temperature is key
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