Multilayer Technique: the addition of a plastic movie was the initial step to make brick containers impermeable to liquids and warmth-sealable. During the sixties, an aluminum foil began to be extra towards the cardboard container to guarantee improved defense and extend the shelf lifetime of the packaged product or service. https://gabletopcontainersfood.blogspot.com/2024/10/the-future-of-eco-friendly-packaging.html