Injection Molding
4 Aufrufe
EEA injection flow marks
Problembeschreibung
Radial flow marks centered on the gate appearing on the EEA injection molded product surface
Ursachenanalyse
Injection speed too fast causing unstable melt front; mold temperature too low <30°C, front cooling rapidly forming marks
Lösung
1) Adopt multi-stage injection speed slow-fast-slow to control front stability; 2) Increase mold temperature to 40-50°C to delay front cooling; 3) Stabilize injection pressure to avoid fluctuation; 4) Increase gate area to reduce pressure sudden change at the gate
Wichtigste Erkenntnis
Flow marks are caused by unstable injection front and rapid cooling; multi-stage injection and high mold temperature are the key
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!