Multilayer method: the addition of a plastic film was the initial step to help make brick containers impermeable to liquids and warmth-sealable. In the 1960s, an aluminum foil began to be extra to the cardboard container to be certain improved defense and lengthen the shelf life of the packaged solution. https://dairygabletoppackaging.finance.blog/2025/02/26/white-labeling-of-water-bottles-why-gable-top-pak-stands-out/