Multilayer Technique: the addition of a plastic film was step one to make brick containers impermeable to liquids and heat-sealable. In the nineteen sixties, an aluminum foil started to be additional on the cardboard container to ensure better protection and lengthen the shelf lifetime of the packaged product or service. https://www.slideserve.com/Sohan21/sustainable-water-in-carton-packaging-eco-friendly-gable-top-boxes
Carton gable top for Dummies
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