Multilayer system: the addition of a plastic movie was the first step to create brick containers impermeable to liquids and heat-sealable. While in the nineteen sixties, an aluminum foil started to be added to the cardboard container to make sure much better protection and lengthen the shelf life of the https://share.evernote.com/note/a33f5123-cae0-0d4e-0d4f-ed5a266a57f8