Multilayer process: the addition of a plastic film was step one to make brick containers impermeable to liquids and warmth-sealable. Within the 1960s, an aluminum foil started to be added into the cardboard container to make certain greater safety and extend the shelf life of the packaged product. The first https://sustainablewaterpackaging.car.blog/2024/10/05/revolutionizing-packaging-the-role-of-water-in-gable-top-cartons/