Multilayer technique: the addition of the plastic film was step one to create brick containers impermeable to liquids and heat-sealable. From the nineteen sixties, an aluminum foil started to be included for the cardboard container to be certain better defense and lengthen the shelf life of the packaged solution. Now http://cartongabletop.car.blog/2025/05/05/dairy-liquid-packaging-with-gable-top-innovation-and-eco-friendly-materials/