Multilayer program: the addition of the plastic film was the initial step to produce brick containers impermeable to liquids and warmth-sealable. While in the 1960s, an aluminum foil started to be included on the cardboard container to make sure improved safety and prolong the shelf lifetime of the packaged merchandise. https://gablecarton.water.blog/2025/05/05/innovative-packaging-solutions-for-dairy-products-brand-identity-with-gable-top-cartons/