Multilayer method: the addition of the plastic movie was the first step to produce brick containers impermeable to liquids and warmth-sealable. In the 1960s, an aluminum foil began to be extra to your cardboard container to be sure better safety and prolong the shelf life of the packaged solution. Now https://share.evernote.com/note/87071b25-16a9-bc0d-a80f-d36737b91b9f