Multilayer process: the addition of the plastic film was the first step to produce brick containers impermeable to liquids and warmth-sealable. During the sixties, an aluminum foil started to be added to your cardboard container to be certain much better safety and increase the shelf life of the packaged merchandise. https://gabletoppak.school.blog/2024/12/05/gabletop-pak-revolutionizing-sustainable-packaging-solutions-for-a-greener-future/