Multilayer System: the addition of the plastic film was step one to produce brick containers impermeable to liquids and heat-sealable. In the nineteen sixties, an aluminum foil began to be included on the cardboard container to make certain superior security and prolong the shelf lifetime of the packaged solution. Now https://gabletoppackagingcontainers.blogspot.com/2025/08/sustainable-liquid-packaging-smart.html