Multilayer method: the addition of a plastic film was step one for making brick containers impermeable to liquids and heat-sealable. From the sixties, an aluminum foil started to be added into the cardboard container to make sure greater safety and extend the shelf lifetime of the packaged item. Outcome metrics https://www.mediafire.com/file/uajwq3hd2kqwgno/Sustainable_Carton_Water_with_Your_Brand_Identity/file