Multilayer technique: the addition of the plastic film was the first step to produce brick containers impermeable to liquids and warmth-sealable. Inside the sixties, an aluminum foil began to be additional to your cardboard container to be sure far better defense and extend the shelf life of the packaged merchandise. https://gabletoppackagingcontainers.blogspot.com/2025/01/water-in-carton-packaging-future-of.html