Polyethylene Coating: A Thin layer of polyethylene on either side offers longevity. The outer layer safeguards the look and printing, when the inner layer functions like a sealant, building the carton totally leakproof. The first patents for foodstuff paperboard containers day back again to the beginning of the final century. https://gabletoppak.politics.blog/2025/04/09/why-gable-top-packaging-is-taking-over-modern-sustainable-markets/