Multilayer technique: the addition of the plastic film was the first step to generate brick containers impermeable to liquids and heat-sealable. While in the nineteen sixties, an aluminum foil started to be added to your cardboard container to guarantee improved defense and prolong the shelf life of the packaged product. https://mineralwaterincarton.food.blog/2025/03/10/premium-white-label-water-bottles-for-your-business/