Multilayer program: the addition of the plastic movie was step one for making brick containers impermeable to liquids and heat-sealable. During the nineteen sixties, an aluminum foil began to be extra to the cardboard container to guarantee superior security and lengthen the shelf life of the packaged product or service. https://recyclableoilpackagings.blogspot.com/2024/10/the-future-of-eco-friendly-packaging.html