Injection Molding
5 visualizaciones
PETG '2079851475616104452 poor venting, burning
Fenómeno del problema
Burnt black spots appear at the end or thin-wall areas of PETG injection molded products.
Análisis de la causa
Poor cavity venting, air is compressed and heated scorching the material, injection speed too fast and air has no time to escape.
Solución
Deepen the vent groove depth to 0.02-0.03mm; reduce injection speed; add parting line venting; use vacuum venting.
Conclusión clave
PETG burning is caused by air retention; improving venting is the most direct measure.
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!