Multilayer program: the addition of the plastic film was the initial step to produce brick containers impermeable to liquids and heat-sealable. During the sixties, an aluminum foil began to be included into the cardboard container to guarantee better security and extend the shelf lifetime of the packaged item. Their lightweight https://dairycartonsustainability.water.blog/2025/02/07/the-rise-of-gable-top-cartons-in-packaging/