Multilayer process: the addition of a plastic film was the first step to produce brick containers impermeable to liquids and heat-sealable. While in the 1960s, an aluminum foil started to be included to your cardboard container to ensure superior protection and extend the shelf lifetime of the packaged products. The https://gabletoppak.wordpress.com/2025/02/07/the-rise-of-gable-cartons-in-the-packaging-industry/