P1 · Color Development
When Should a Processor Choose Color Masterbatch Instead of Dry Pigment?
A practical comparison of masterbatch and dry pigment based on color consistency, dispersion, clean handling, dosing and total processing cost.
Direct answer
When should a plastics processor choose color masterbatch instead of dry pigment?
Color masterbatch is generally the first option when consistent shade, dispersion, clean handling, automated dosing and repeatability matter more than the lowest colorant purchase price. Dry pigment may still be suitable for plants with controlled powder dispersion, dosing and industrial-hygiene systems. The decision must be tied to the resin, process and finished part.
What to confirm before sampling
Resin and carrier
Confirm polymer grade, processing temperature and carrier compatibility; one concentrate should not be assumed to suit every resin.
Color approval
Provide a physical sample or color reference together with part thickness, surface and agreed viewing light.
Dosing and mixing
Review feeder accuracy, batch size, mixing method and acceptable dosing variation.
Total conversion cost
Include cleaning, changeover, scrap, labor, downtime and repeated color adjustment, not only price per kilogram.
Common mistakes
- Comparing purchase price without counting scrap and color-change cost.
- Approving pellet color instead of a part made in the intended resin and thickness.
- Ignoring carrier compatibility, heat stability and downstream requirements.
Suggested validation sequence
- 01
Freeze one resin lot, process, temperature, thickness and color target.
- 02
Record dosing, mixing, stabilization time, cleaning and scrap for each route.
- 03
Compare shade, opacity, dispersion, surface and repeatability on finished parts.
- 04
Select by total cost of acceptable output and process control.
What common documents can and cannot establish
Public information and confidential project depth
Public pages do not disclose pigment combinations, color databases, supply chains or project formulations. A grade, use range and document scope are reviewed after the resin, process, color target and application are confirmed.
Buyer questions
Is masterbatch always better dispersed than dry pigment?
No absolute claim is appropriate. Masterbatch moves dispersion upstream and often improves dosing and cleanliness, but the result still depends on concentrate quality, carrier, equipment and process.
Is a Pantone code enough for final approval?
It is enough to start, but final approval should also define resin color, part thickness, surface, process temperature, viewing light and a physical reference.
Turn a color request into a controlled sample brief
Send the resin, process, physical sample or color code, part thickness and approval method. Kejulong can then define the first sampling discussion while project formulations remain confidential.