Multilayer process: the addition of a plastic movie was step one to create brick containers impermeable to liquids and heat-sealable. During the 1960s, an aluminum foil began to be extra to your cardboard container to ensure much better security and prolong the shelf lifetime of the packaged product or service. https://www.tumblr.com/sustainablemilkcartons/788315838224744448/paper-bottle-manufacturers-with-custom-branding?source=share