Injection Molding
3 Aufrufe
PETG '2079851475616104452 poor venting, burning
Problembeschreibung
Burnt black spots appear at the end or thin-wall areas of PETG injection molded products.
Ursachenanalyse
Poor cavity venting, air is compressed and heated scorching the material, injection speed too fast and air has no time to escape.
Lösung
Deepen the vent groove depth to 0.02-0.03mm; reduce injection speed; add parting line venting; use vacuum venting.
Wichtigste Erkenntnis
PETG burning is caused by air retention; improving venting is the most direct measure.
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!