Multilayer method: the addition of the plastic movie was the first step for making brick containers impermeable to liquids and heat-sealable. Inside the sixties, an aluminum foil started to be additional on the cardboard container to ensure improved security and lengthen the shelf lifetime of the packaged product or service. https://gabletopcartons.school.blog/2025/04/09/eco-conscious-innovation-with-water-in-carton-packaging/