Multilayer program: the addition of a plastic film was the first step to create brick containers impermeable to liquids and warmth-sealable. Inside the 1960s, an aluminum foil started to be included for the cardboard container to make certain far better protection and extend the shelf lifetime of the packaged products. https://topcartons.family.blog/2025/04/09/eco-conscious-innovation-with-water-in-carton-packaging/