Sustainability claims for paper cups made with EarthCoating® vary based on what type of resin is being used. For example, paper cups made with EarthCoating® EC-51 (a blend of 51% minerals and 49% low density Polyethylene) are not compostable because of the petroleum-based plastic used in the coating. However, if we mineralize a bio-resin, we’re able to meet the necessary criteria to make compostability claims.