Extrusion & Post
3 Aufrufe
Surface defects caused by PVDF melt fracture
Problembeschreibung
Periodic irregular wrinkles on the surface of extrusion and injection
Ursachenanalyse
The shear stress at the die exit exceeds the critical value, causing elastic instability
Lösung
Reduce the extrusion speed, raise the die temperature, and increase the gap
Wichtigste Erkenntnis
A typical rheological problem in extrusion processing
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