Multilayer system: the addition of the plastic movie was step one to generate brick containers impermeable to liquids and warmth-sealable. Within the nineteen sixties, an aluminum foil started to be added into the cardboard container to make sure far better protection and extend the shelf lifetime of the packaged merchandise. https://gabletopcontainers.blogspot.com/2024/09/how-gabletop-pak-is-leading-way-in-eco.html