Packaging World editors Anne Marie Mohan and Matt Reynolds return to unPACKed for the fifth episode of its six-part sustainability sit-down, turning the spotlight on monolayer materials. All plastics and foils are not created equal, and the complexity that allows them to protect food or beverages, for instance, also makes recycling significantly harder. Mohan and Reynolds cover sustainability and packaging materials daily and discuss how monolayer materials could be one of the major keys to a more sustainable packaging supply chain.