Multilayer technique: the addition of a plastic film was the first step to generate brick containers impermeable to liquids and warmth-sealable. During the sixties, an aluminum foil started to be additional to your cardboard container to be sure greater safety and prolong the shelf life of the packaged merchandise. This https://medium.com/@GableTopPackaging/the-rise-of-gable-top-packaging-in-sustainable-solutions-1837c32d0522