Polyethylene Coating: A thin layer of polyethylene on both sides supplies toughness. The outer layer shields the look and printing, although the internal layer acts being a sealant, building the carton absolutely leakproof. The primary patents for food paperboard containers date again to the beginning of the final century. They https://share.evernote.com/note/092a2d9b-9bbe-5b73-1d68-c788b997f84b