No PFAS in food packaging in MN by 2024 The industry is seeking alternatives to the chemical compounds. June 25, 2021 — 5:10pm Text size Copy shortlink: Minnesota's ban on "forever chemicals" in food packaging will soon head to Gov. Tim Walz for his signature, meaning companies must find replacements for the compounds by January 2024. For years, the man-made compounds have been used to stop food from sticking and prevent grease and other liquids from soaking into packaging. And while food packaging is just one route for per- and polyfluoroalkyl substances, called PFAS, to migrate into the environment, it is a highly personal one and the focus of a growing number of state bans.