Molding Process
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Excessive back pressure causing melt overheating in PCTG
Problembeschreibung
Under high back pressure, melt temperature rises beyond the thermal stability limit.
Ursachenanalyse
Back pressure set too high generates large amounts of shear heat, accumulated temperature rise exceeds the limit.
Lösung
Reduce back pressure to a reasonable range of 0.5-1.5MPa; monitor actual melt temperature.
Wichtigste Erkenntnis
PCTG back pressure is closely related to melt temperature.
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