Polyethylene Coating: A thin layer of polyethylene on each side gives toughness. The outer layer protects the look and printing, whilst the interior layer functions for a sealant, making the carton fully leakproof. This process permits the creation of long-lasting shelf products in a way wherever Tetra Pak cartons are https://edibleoilgabletoppackaging.blogspot.com/2025/08/innovative-paper-water-bottle-designs.html