Injection Molding
4 Aufrufe
Uneven Color in PU Mixed with Color Masterbatch
Problembeschreibung
PU/color masterbatch injection molded products show color streaks and areas of uneven color depth
Ursachenanalyse
Color masterbatch carrier resin incompatible with PU; color masterbatch dispersion poor, pigment agglomeration; melt flow unstable during '2079851475616104452 causing pigment orientation
Lösung
1) Select PU or same-type carrier color masterbatch to ensure compatibility; 2) Twin-screw extrusion pelletizing for pre-dispersion; 3) Appropriately extend mixing time to ensure pigment dispersion; 4) Reduce injection speed to decrease pigment orientation
Wichtigste Erkenntnis
Color masterbatch carrier matching and full dispersion are the keys to color uniformity
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!