What You Need to Know
The inks are formulated as stable emulsions, with food‑grade pigments dispersed in a carrier containing emulsifiers such as soy lecithin and stabilizers like xanthan gum. Binders such as gelatin or pectin cross‑link to form a thin, cohesive film, while viscosity is tuned to 10–30 mPa·s at 25 °C to allow precise extrusion. Temperature adjustments (4–40 °C) modulate the viscosity and drying kinetics, enabling fine line resolution.
The Science
Primary Reaction
emulsion formation and gelation