Extrusion & Post
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EAA screw slipping
Fenómeno del problema
Screw slipping during EAA extrusion, feed not advancing, output dropping sharply
Análisis de la causa
EAA granules melting too early in the feeding section forming a lubricating film causing screw slipping; feeding section temperature too high
Solución
1) Reduce feeding section temperature by 10-15°C to delay melting; 2) Deepen feeding section flights to increase material gripping force; 3) Dry granule surfaces to reduce lubrication
Conclusión clave
Screw slipping is caused by premature melting; lowering the feeding section temperature is key
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