Injection Molding
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CEF and color masterbatch mixing color uneven
Problembeschreibung
The CEF/color masterbatch injection molded part shows color streaks and areas with uneven color depth
Ursachenanalyse
The carrier resin of the color masterbatch is incompatible with CEF; the color masterbatch is poorly dispersed and the pigment agglomerates; the melt flow is unstable during the '2079851475616104452 process, causing pigment orientation
Lösung
1) Select CEF or similar carrier color masterbatch to ensure compatibility; 2) Pre-disperse by twin-screw extrusion granulation; 3) Appropriately extend the mixing time to ensure pigment dispersion; 4) Reduce the injection speed to reduce pigment orientation
Wichtigste Erkenntnis
Carrier matching of the color masterbatch and sufficient dispersion are the key to color uniformity
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