P5-A · Filament Color Masterbatch
What to Provide Before Requesting Color Masterbatch for PLA or PETG Filament
A pre-sample checklist connecting resin, drying, filament extrusion, diameter, target shade and printed-part validation.
Direct answer
What should a filament producer provide and verify before requesting color masterbatch samples for PLA or PETG?
Define the actual PLA or PETG resin system, drying method, extrusion equipment and temperatures, target diameter, physical color reference, printer and print conditions. Pellet color does not represent filament or printed-part color, and PLA and PETG should not be assumed to share one carrier or formulation merely because both are used for 3D printing.
What to confirm before sampling
Resin system
Separate PLA, PETG and any modified or blended system and provide the actual grade or current raw-material information.
Drying and extrusion
Record drying, temperature zones, screw, cooling, haul-off and diameter control so moisture or line variation is not misdiagnosed.
Color target
Provide a physical sample or code and define standard, matte, silk or other intended appearance and viewing method.
Print validation
Approve a printed part using agreed nozzle, layer height, temperature, speed and model, not filament alone.
Common mistakes
- Using a PLA color concentrate in PETG without compatibility and process review.
- Approving filament color without checking layer lines, gloss and wall thickness on printed parts.
- Changing drying, temperature, concentrate and print settings together.
Suggested validation sequence
- 01
Freeze one resin lot, drying method, line, diameter and color target.
- 02
Extrude a blank, current solution and candidate while recording stability and diameter.
- 03
Print standard parts with one file, printer, nozzle, temperature and speed.
- 04
Compare shade, dispersion, surface, layer bonding, breakage and repeatability.
What common documents can and cannot establish
Public information and confidential project depth
Public pages do not disclose pigment formulation, colorant system, internal matching method, fixed dosage or grade map. A project route and document scope follow confirmation of resin, process and target.
Buyer questions
Can a PLA color masterbatch be used directly in PETG?
It should not be assumed. Carrier compatibility, processing window, filament stability and printed-part performance should be checked separately.
Why can pellets, filament and printed parts show different color?
Dilution, temperature, diameter, layer height, infill, surface texture and lighting affect the three forms differently.
Define color with both filament and printed parts
Send the resin, diameter, extrusion temperatures, drying, target sample and print settings. These inputs create a useful first sample brief while formulation and grade mapping remain confidential.