Xennia Technology (United Kingdom)

Dimer acid-based polyamides are resins of choice for flexographic inks printed on non-porous substrates, especially packaging films and foils. But can they work in inks designed for wide-format printers? To answer this question, we determined the behavior of carefully chosen polyamide resins in non-conventional solvents and solvent blends and tested the most promising resins and blends in basic ink formulations, obtaining data on their viscosity, stability, jetting behavior, drying rate, rub-resistance, and adhesion.