Multilayer Method: the addition of a plastic film was the initial step to produce brick containers impermeable to liquids and heat-sealable. Within the sixties, an aluminum foil started to be included to your cardboard container to be sure greater safety and extend the shelf life of the packaged product. End https://waterinbox.movie.blog/2025/05/05/innovative-aseptic-packaging-for-milk-with-gable-top-cartons/