Material Drying
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PLA Sheet Extrusion Moisture
Fenómeno del problema
PLA sheet extrusion has many bubbles and embrittlement, and ordinary drying systems cannot meet the requirements
Análisis de la causa
PLA sheet extrusion requires moisture <50ppm, with extremely high requirements for drying and temperature control systems; the thickness is generally only 0.2-1.0mm; it needs to be processed on modified advanced PET extruders
Solución
①Sheet extrusion moisture control <50ppm; ②Use a PET-type extrusion line with deep dehumidification; ③Design the thickness per the 0.2-1.0mm window; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Conclusión clave
PLA sheet extrusion is the ultimate challenge of drying capability; the 50ppm red line determines the equipment threshold; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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