The BIO-BOARD project will build on past research that has revealed that whey protein coating can provide bio-degradable plastic layers that can replace existing plastic coatings in multilayer packaging and enhance their recyclability –by separating the individual fractions of the multilayer packaging. To this end, a tailored coating system based on the renewable raw material derived from agrofood waste and its technological application will be developed for extrusion coating paper, paperboard and cardboard to produce packaging materials. The base material for the coating will be innovative formulations based on proteins such as whey and residues from potato. Indeed, as a by-product coming from cheese production, still 40-50% of the 50 million tons of whey produced annually in Europe is discarded, while about 65,000 tons of dried fruit juice protein and 140,000 tons of dried potato pulp are produced during starch production annually within the EU which could be available for new valorisations.