Multilayer system: the addition of a plastic film was the first step to make brick containers impermeable to liquids and heat-sealable. During the nineteen sixties, an aluminum foil started to be added for the cardboard container to guarantee improved protection and prolong the shelf life of the packaged product or https://gablecarton.video.blog/2024/10/05/embracing-innovation-water-in-gable-top-packaging/