Multilayer system: the addition of the plastic movie was step one to make brick containers impermeable to liquids and heat-sealable. Within the sixties, an aluminum foil began to be included for the cardboard container to make certain better protection and prolong the shelf lifetime of the packaged products. The initial https://cartonpackagingdairy.blogspot.com/2025/04/gable-top-carton-manufacturers-crafting.html