Polyethylene Coating: A Thin layer of polyethylene on each side presents sturdiness. The outer layer safeguards the look and printing, when the inner layer acts as being a sealant, producing the carton absolutely leakproof. The primary patents for foods paperboard containers day back to the beginning of the last century. https://gabletop.finance.blog/2024/09/12/the-rise-of-gable-top-packaging-solutions/