Multilayer Procedure: the addition of a plastic film was step one for making brick containers impermeable to liquids and warmth-sealable. During the nineteen sixties, an aluminum foil started to be extra for the cardboard container to ensure better defense and prolong the shelf life of the packaged product or service. https://artongabletop.sport.blog/2025/04/09/why-gable-top-packaging-is-taking-over-modern-sustainable-markets/