Processing Machinery
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Melt Pressure Fluctuation of PBT Extruder
Fenómeno del problema
The melt pressure of the extruder fluctuates periodically or randomly, and the product thickness changes.
Análisis de la causa
The screw speed fluctuates; the feeding is uneven (inconsistent particle sizes, poor feeding); the filter gradually clogs.
Solución
Stabilize the screw speed; use a metering feeder; replace the filter regularly; control the feeding section temperature to prevent bridging.
Conclusión clave
PBT extrusion pressure stability is the prerequisite for dimension control.
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