Multilayer method: the addition of a plastic movie was step one to generate brick containers impermeable to liquids and heat-sealable. Inside the 1960s, an aluminum foil began to be extra on the cardboard container to be sure greater safety and extend the shelf lifetime of the packaged merchandise. Taking this https://share.evernote.com/note/b2071b1b-80c2-b6a0-1f3e-5c4ad1d4c0d7