Multilayer program: the addition of a plastic movie was the initial step to create brick containers impermeable to liquids and warmth-sealable. Within the nineteen sixties, an aluminum foil started to be extra into the cardboard container to guarantee far better protection and increase the shelf life of the packaged product https://gabletopcontainers.blogspot.com/2024/12/the-green-revolution-in-packaging-gable.html