Multilayer system: the addition of the plastic movie was the first step to generate brick containers impermeable to liquids and heat-sealable. Within the nineteen sixties, an aluminum foil began to be added into the cardboard container to be certain greater safety and increase the shelf lifetime of the packaged merchandise. https://gabletopcontainers.food.blog/2025/01/09/the-impact-of-gable-top-cartons-on-sustainable-packaging-in-various-industries/