Multilayer Procedure: the addition of a plastic movie was step one to make brick containers impermeable to liquids and warmth-sealable. While in the nineteen sixties, an aluminum foil began to be additional into the cardboard container to ensure superior protection and prolong the shelf life of the packaged products. This https://share.evernote.com/note/a12be27a-6b18-80fa-21c4-5a959d3c51d3