Multilayer procedure: the addition of the plastic film was the first step to make brick containers impermeable to liquids and heat-sealable. While in the 1960s, an aluminum foil began to be included for the cardboard container to ensure improved protection and prolong the shelf lifetime of the packaged product or https://gablecarton.business.blog/2025/04/09/sustainable-solutions-through-gable-top-milk-packaging/