Multilayer process: the addition of a plastic film was the initial step to help make brick containers impermeable to liquids and heat-sealable. Inside the nineteen sixties, an aluminum foil started to be included into the cardboard container to guarantee far better defense and extend the shelf lifetime of the packaged https://gabletoppackagingcontainers.blogspot.com/2025/01/water-in-carton-packaging-future-of.html