Multilayer system: the addition of a plastic movie was step one to help make brick containers impermeable to liquids and warmth-sealable. Within the 1960s, an aluminum foil began to be added on the cardboard container to ensure better safety and extend the shelf life of the packaged products. This method https://gabletopcartons.fashion.blog/2024/10/05/embracing-innovation-water-in-gable-top-packaging/