Multilayer Method: the addition of the plastic movie was the first step to create brick containers impermeable to liquids and heat-sealable. Inside the nineteen sixties, an aluminum foil began to be additional on the cardboard container to make certain better defense and lengthen the shelf life of the packaged item. https://gabletoppak.wordpress.com/2025/08/26/water-in-carton-eco-friendly-packaging-with-gable-top-pak/