Material Drying
3 Aufrufe
Silver streaks and bubbles in products due to insufficient pellet drying
Problembeschreibung
Injection and extrusion products show silver streaks and bubbles, transparency decreases, and mechanical properties decrease
Ursachenanalyse
Moisture absorption is 0.04%, but the high processing temperature causes hydrolysis
Lösung
Dehumidifying drying at 120-130C for 4-6h, dew point <-30C
Wichtigste Erkenntnis
Sufficient drying is required before processing
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