Multilayer system: the addition of the plastic film was step one to make brick containers impermeable to liquids and warmth-sealable. During the nineteen sixties, an aluminum foil began to be extra for the cardboard container to guarantee far better defense and lengthen the shelf lifetime of the packaged merchandise. Consequence https://cartonpackagingdairy.blogspot.com/2025/10/eco-friendly-liquid-packaging-gable-top.html