Multilayer method: the addition of a plastic movie was step one for making brick containers impermeable to liquids and heat-sealable. In the sixties, an aluminum foil began to be included to the cardboard container to make sure much better security and extend the shelf lifetime of the packaged products. Now https://gablecarton.business.blog/2025/04/09/how-gable-top-packaging-is-shaping-the-future-of-consumer-goods/