Multilayer system: the addition of the plastic film was step one to create brick containers impermeable to liquids and warmth-sealable. In the nineteen sixties, an aluminum foil started to be additional towards the cardboard container to make certain much better security and lengthen the shelf lifetime of the packaged merchandise. https://gablecarton.art.blog/2024/12/05/gabletop-pak-pioneering-the-future-of-sustainable-packaging-solutions/