Multilayer Process: the addition of the plastic film was the initial step to create brick containers impermeable to liquids and heat-sealable. Inside the 1960s, an aluminum foil began to be included to the cardboard container to be sure superior protection and lengthen the shelf lifetime of the packaged item. The https://customgabletopcartons.blogspot.com/2025/10/eco-friendly-liquid-packaging-gable-top.html