Patent ID: 7037555

Claim:
A method of manufacturing a solar control glazing panel, the solar control glazing panel having a solar factor (FS) of less than 70% and an emissivity of less than 0.4 and comprising a substrate carrying a coating which comprises a plurality of coating layers, the method comprising the steps of: pyrolytically forming a first coating layer on a soda-lime float glass substrate from reactants in a gaseous phase, the formation of the first coating layer being selected from forming the first coating layer on a sheet of freshly formed soda-lime flat glass as it moves in a tunnel oven whilst it is still hot and forming the first coating layer inside a float tank on the top surface of a glass ribbon whilst the glass ribbon is floating on a bath of molten tin, the first coating layer comprising tin and antimony oxides and having a Sb/Sn molar ratio ranging from 0.03 to 0.15; and forming a second coating layer on the soda-lime float glass substrate, the second coating layer being positioned over the first coating layer and comprising tin oxide doped with fluorine, wherein the coating excluding the second coating layer is such as to confer on a 4 mm thick sheet of clear soda-lime glass a solar energy transmission (TE) measured according to the CIE standard ranging from 27 to 54.3%.