In for a Treat

Bare, covered or both

Package printers familiar with corona treating's bare roll/conductive substrate, covered roll/nonconductive substrate distinction will find that the choice can be a bit more multifaceted. "For printing, coating and laminating, 95 percent of the time, the bare roll is going to be the best solution because it will accept conductive and nonconductive substrates," states Enercon's Ray. Covered rolls are a necessity in lane-treating of bags and pouches, he notes. Tantec's Schueler also favors bare rolls with ceramic electrodes, complemented by features that allow storage of treatment parameters for a wide materials range.