Injection Molding
8 visualizações
PETG '2079851475616104452 poor venting, burning
Fenómeno do problema
Burnt black spots appear at the end or thin-wall areas of PETG injection molded products.
Análise das causas
Poor cavity venting, air is compressed and heated scorching the material, injection speed too fast and air has no time to escape.
Solução
Deepen the vent groove depth to 0.02-0.03mm; reduce injection speed; add parting line venting; use vacuum venting.
Conclusão principal
PETG burning is caused by air retention; improving venting is the most direct measure.
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!