Multilayer Process: the addition of the plastic film was the first step to create brick containers impermeable to liquids and warmth-sealable. During the sixties, an aluminum foil started to be additional towards the cardboard container to make sure better security and prolong the shelf life of the packaged item. Now https://waterinsustainablepak.news.blog/2025/06/09/sustainable-revolution-from-paper-water-bottle-to-gable-top-containers/