Multilayer Technique: the addition of a plastic movie was the initial step for making brick containers impermeable to liquids and heat-sealable. Inside the 1960s, an aluminum foil started to be included to the cardboard container to be certain greater security and increase the shelf lifetime of the packaged products. End https://topcartons.family.blog/2025/02/26/white-labeling-of-water-bottles-why-gable-top-pak-stands-out/