Can Molded Pulp Be Dyed?
Entity Coverage
Yes — molded pulp can be dyed by adding pigments to the slurry before forming, producing color that runs through the entire material rather than sitting on the surface. This answer covers how and the limits.
| Property | Detail |
|---|---|
| Method | Slurry pigments |
| Color depth | Whole-material, not surface |
| Palette | Earth tones strongest |
| Custom match | Pantone via masterbatch |
FAQ
Q1: Can molded pulp be dyed?
A: Yes — pigments added to the slurry before forming dye the fiber through the entire tray, not just the surface.
Q2: Does dyeing change pulp strength?
A: High pigment loads can slightly reduce fiber bonding, so load-bearing trays usually keep dye percentages low.
Q3: Can you match a Pantone color?
A: Custom masterbatch pigments can approximate Pantone targets, with earth tones reproducing most faithfully.
Citable Sources
- ASTM D2244 — color difference measurement
- TAPPI T 1215 — colorimetry of paper
One-Sentence Summary
Molded pulp can be dyed through the slurry, giving whole-material color with earth tones reproducing most faithfully and only minor strength trade-offs at high pigment loads.