Multilayer Process: the addition of a plastic movie was the initial step to help make brick containers impermeable to liquids and heat-sealable. During the nineteen sixties, an aluminum foil started to be additional for the cardboard container to be sure improved protection and extend the shelf life of the packaged https://www.tumblr.com/gabletoppak/774741494614622208/the-rise-of-gable-top-cartons-in-eco-friendly?source=share