Multilayer system: the addition of a plastic film was the first step to make brick containers impermeable to liquids and warmth-sealable. While in the nineteen sixties, an aluminum foil started to be extra to your cardboard container to make sure far better safety and increase the shelf life of the https://share.evernote.com/note/0f2f7714-5c14-b744-dcde-d5d473571384