Multilayer program: the addition of a plastic film was the first step to produce brick containers impermeable to liquids and heat-sealable. Within the nineteen sixties, an aluminum foil started to be included towards the cardboard container to ensure greater protection and increase the shelf life of the packaged item. This https://gabletopcartons.health.blog/2025/01/09/sustainable-water-packaging-leading-the-change/