Polyethylene Coating: A skinny layer of polyethylene on either side delivers sturdiness. The outer layer protects the look and printing, while the interior layer functions as a sealant, building the carton wholly leakproof. The first patents for foodstuff paperboard containers date back again to the beginning of the last century. https://dairycartonsustainability.fashion.blog/2025/05/05/eco-friendly-soap-packaging-with-gable-top-solutions/