Below is a list of Teflon Coating manufacturers from Sioux City, Iowa. Teflon is the brand name of the plastic polytetrafluoroethylene and is made with fluoropolymers. The name Teflon is trademarked by DuPont. Teflon coatings are used to make cooking utensils and other industrial applications. Teflon is an ideal material because of its non-stick characteristic. Teflon coatings differ according to the type and combination of fluoropolymers used.