Overflow downdraw method

The overflow downdraw method or fusion method is a technique for producing flat glass. The key advantage of this technique as compared to the float glass process is that the pristine surfaces are not touched by molten tin. The technique is used for the production of flat panel display glass by the companies Asahi Glass Co., Corning, Nippon Electric Glass, Samsung Corning Precision Glass, and various other companies operating in the field of display glass and other types of thin glass.