Polyethylene Coating: A skinny layer of polyethylene on either side offers durability. The outer layer guards the design and printing, though the inner layer acts for a sealant, generating the carton fully leakproof. The first patents for foodstuff paperboard containers date again to the beginning of the final century. They https://waterinpaperbottle.blogspot.com/2025/10/eco-friendly-liquid-packaging-gable-top.html