Multilayer Method: the addition of the plastic movie was the first step to create brick containers impermeable to liquids and heat-sealable. Inside the 1960s, an aluminum foil began to be extra into the cardboard container to make sure much better security and lengthen the shelf life of the packaged item. https://gabletopmilkcarton.art.blog/2025/06/09/sustainable-thinking-begins-with-gable-top-carton-manufacturers/