Multilayer Method: the addition of the plastic movie was the initial step for making brick containers impermeable to liquids and warmth-sealable. During the 1960s, an aluminum foil started to be added to the cardboard container to ensure better protection and increase the shelf lifetime of the packaged solution. The choice https://share.evernote.com/note/c589cf3c-b115-d301-e0eb-74f319b5a896