Multilayer method: the addition of the plastic movie was the first step to help make brick containers impermeable to liquids and warmth-sealable. Inside the sixties, an aluminum foil began to be included for the cardboard container to be sure superior security and lengthen the shelf lifetime of the packaged product. https://gabletopcontainers.travel.blog/2024/12/05/gabletop-pak-pioneering-the-future-of-sustainable-packaging-solutions/