Multilayer Program: the addition of a plastic film was the first step to create brick containers impermeable to liquids and heat-sealable. During the nineteen sixties, an aluminum foil started to be additional to the cardboard container to make sure improved protection and increase the shelf life of the packaged product. https://freewateradvertising.blogspot.com/2025/09/gable-carton-classic-design-modern-eco.html