https://www.avient.com/sites/default/files/2023-06/Omnicolor Brochure.pdf
Calculate using Let Down Percentage:
Cost/lb of Concentrate x (Let Down Percentage/100) = Coloring Cost
Calculate using Let Down Ratio:
Cost/lb of Concentrate – Cost/lb of Resin
Let Down Ratio +1
= Coloring Cost
TWO WAYS TO CALCULATE COLORING COSTS
OMNICOLOR™
TROUBLESHOOTING
TWO WAYS TO CALCULATE COLORING COSTS
SYMPTOM CAUSE REMEDY
Color Variation Shot-to-Shot
Poor Omnicolor preblending
Pigment has insufficient
thermal stability
More thorough blending
Ensure correct machine
temperature control
Screw Slip
Premature melting of Omnicolor
Excessive addition rate
Reduce heat in feed zone
Check addition rate and reduce
if necessary
Overall Good Distributive
Mixing With Streaks or Dots
of Another Color
Poor pigment dispersion in
concentrate
Return concentrate for
replacement
Black Streaks or Splotches Degraded polymer in barrel Clean screw and barrel
Poor Distributive Mixing
(Streaking)
Insufficient plastification See processing instructions
Loss of Color
Pigment has insufficient
thermal stability
Change to more heat stable
colorant
Ensure correct machine
temperature control
OMNICOLOR™
PROCESSING TEMPERATURES
RECOMMENDED MAXIMUM PROCESSING TEMPERATURES FOR OMNICOLOR IN SELECTED POLYMERS IN °C
UK
COLOR NO.
https://www.avient.com/products/polymer-colorants/fluoropolymer-color-concentrates
Increase functionality of your masterbatch:
You may want to add conductivity or improve lubricity, static dissipation, X-ray opacity or lightweighting through foaming.
Colorant Chromatics™ X-Ray Opaque Formulations
https://www.avient.com/sites/default/files/2024-03/Terms and Conditions of Sale for South Africa.pdf
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