Multilayer Method: the addition of a plastic film was step one for making brick containers impermeable to liquids and warmth-sealable. In the sixties, an aluminum foil began to be extra into the cardboard container to make sure superior safety and increase the shelf lifetime of the packaged product or service. https://gabletopcontainers.food.blog/2025/01/09/the-impact-of-gable-top-cartons-on-sustainable-packaging-in-various-industries/