Multilayer system: the addition of the plastic movie was the first step for making brick containers impermeable to liquids and heat-sealable. Inside the sixties, an aluminum foil began to be extra for the cardboard container to make certain much better protection and increase the shelf life of the packaged products. https://gabletopcartonsforjuice.blogspot.com/2024/10/gabletop-pak-pioneering-sustainable.html