Multilayer program: the addition of the plastic movie was the first step for making brick containers impermeable to liquids and warmth-sealable. During the nineteen sixties, an aluminum foil started to be added to your cardboard container to guarantee greater defense and prolong the shelf lifetime of the packaged products. Result https://share.evernote.com/note/a390625d-2ff3-ca64-e38e-2112daeebd09