Multilayer system: the addition of a plastic movie was step one to help make brick containers impermeable to liquids and warmth-sealable. During the nineteen sixties, an aluminum foil began to be additional into the cardboard container to make certain improved defense and increase the shelf life of the packaged item. https://gablecarton.water.blog/2024/09/12/the-rise-of-gable-top-packaging-solutions/