Multilayer system: the addition of the plastic movie was the initial step to make brick containers impermeable to liquids and heat-sealable. During the sixties, an aluminum foil began to be extra on the cardboard container to ensure much better security and increase the shelf lifetime of the packaged solution. Gabletop https://liquidsoappackage.blogspot.com/2025/09/gable-carton-classic-design-modern-eco.html