There are numerous factors that can affect migration. The spectrum here includes the properties of the printed material, printing inks and coatings, adhesives, design, logistics, hygiene and much more. Selecting suitable raw materials is therefore of prime importance.
On offer are special printing inks for food packaging that keep mass transfers to a minimum. The range comprises various coatings like dispersion coatings, water-based printing inks for flexographic printing, sheet offset printing inks or solvent-based printing inks for gravure and flexographic printing. Generally these involve a low migration risk. The inks are volatile and generally evaporate during the drying process. And UV-curing inks and coatings are all very stable thanks to the radiation and immediately form a dry colour film.