Multilayer procedure: the addition of the plastic film was the first step to create brick containers impermeable to liquids and warmth-sealable. In the sixties, an aluminum foil started to be extra for the cardboard container to ensure superior safety and extend the shelf life of the packaged item. The main https://wateradvertisingfree.blogspot.com/2025/06/green-sips-for-better-tomorrow.html