Multilayer program: the addition of the plastic film was the initial step to help make brick containers impermeable to liquids and warmth-sealable. From the nineteen sixties, an aluminum foil began to be added towards the cardboard container to ensure improved safety and lengthen the shelf lifetime of the packaged solution. https://wateringabletop.water.blog/2025/08/26/gable-top-containers-for-food-beverage-healthcare-packaging/