Multilayer technique: the addition of the plastic film was step one to generate brick containers impermeable to liquids and heat-sealable. Within the sixties, an aluminum foil began to be added to your cardboard container to guarantee far better protection and prolong the shelf life of the packaged product or service. https://gablecarton.art.blog/2025/08/26/water-in-carton-eco-friendly-packaging-with-gable-top-pak/