Multilayer system: the addition of the plastic movie was the first step to create brick containers impermeable to liquids and heat-sealable. Inside the nineteen sixties, an aluminum foil started to be added towards the cardboard container to make certain better protection and increase the shelf life of the packaged solution. https://sustainableliquidsoappackaging.blogspot.com/2025/03/paper-bottle-manufacturers-gabletop.html