Multilayer Process: the addition of the plastic movie was the first step to generate brick containers impermeable to liquids and warmth-sealable. In the nineteen sixties, an aluminum foil began to be additional on the cardboard container to be sure greater security and extend the shelf lifetime of the packaged solution. https://gablecarton.water.blog/2024/10/05/embracing-innovation-water-in-gable-top-packaging/