Multilayer technique: the addition of the plastic movie was the initial step for making brick containers impermeable to liquids and warmth-sealable. From the nineteen sixties, an aluminum foil started to be extra to the cardboard container to make certain improved defense and lengthen the shelf lifetime of the packaged product. http://cartongabletop.car.blog/2024/10/29/embracing-eco-friendly-packaging-with-gable-cartons/