Multilayer program: the addition of the plastic movie was the first step to help make brick containers impermeable to liquids and warmth-sealable. From the nineteen sixties, an aluminum foil began to be extra into the cardboard container to ensure superior protection and prolong the shelf lifetime of the packaged item. https://gablecarton.blogspot.com/2025/02/the-growing-demand-for-eco-friendly.html