Multilayer Method: the addition of a plastic movie was step one to produce brick containers impermeable to liquids and warmth-sealable. In the 1960s, an aluminum foil started to be added towards the cardboard container to guarantee better protection and increase the shelf lifetime of the packaged item. This method enables https://eco-friendlygabletopcartons.blogspot.com/2025/02/the-growing-demand-for-eco-friendly.html