Multilayer process: the addition of a plastic film was the initial step to generate brick containers impermeable to liquids and heat-sealable. Within the nineteen sixties, an aluminum foil started to be additional for the cardboard container to guarantee greater safety and prolong the shelf life of the packaged product. End https://gabletopcartons.school.blog/2025/04/09/how-gable-top-packaging-is-shaping-the-future-of-consumer-goods/