Glazing panel having solar screening properties
First Claim
1. A solar control glazing panel, having a solar factor (FS) of less than 70% and an emissivity of less than 0.4, comprising a soda-lime float glass substrate carrying a coating which comprises a plurality of coating layers:
- a first coating layer formed pyrolytically by chemical vapor deposition or by spray on the substrate, comprising tin and antimony oxides and having a Sb/Sn molar ratio ranging from 0.03 to 0.15, anda second coating layer 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%.
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Accused Products
Abstract
A glazing panel having beneficial anti-solar properties comprises a vitreous substrate carrying a tin/antimony oxide coating layer containing tin and antimony in a Sb/Sn molar ratio of from 0.01 to 0.14. In one application the coated substrate has a solar factor FS of less than 70% and the panel is formed by chemical vapor deposition from a reactant mixture comprising a source of tin and a source of antimony. In another application it is particularly suitable for use in vehicle glazing, in particular in vehicle roof windows, and the coated substrate has a spray-formed pyrolytic tin/antimony oxide coating having a thickness of at least 400 nm and, whereby the coated substrate has a luminous transmittance (TL) of less than 35% and a selectivity (TL/TE) of at least 1.3.
33 Citations
29 Claims
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1. A solar control glazing panel, having a solar factor (FS) of less than 70% and an emissivity of less than 0.4, comprising a soda-lime float glass substrate carrying a coating which comprises a plurality of coating layers:
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a first coating layer formed pyrolytically by chemical vapor deposition or by spray on the substrate, comprising tin and antimony oxides and having a Sb/Sn molar ratio ranging from 0.03 to 0.15, and a second coating layer 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%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A solar control glazing panel, having a solar factor (FS) of less than 70% and an emissivity of less than 0.4, comprising:
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a soda-lime glass substrate; a first coating layer formed pyrolytically by chemical vapor deposition or by spray on the soda-lime glass substrate, comprising tin and antimony oxides and having a Sb/Sn molar ratio ranging from 0.03 to 0.15, and a second coating layer, on the soda-lime glass substrate, comprising tin oxide doped with fluorine; wherein the solar control glazing panel without the second coating layer has a solar energy transmission (TE) measured according to the CIE standard ranging from 15.8 to 54.3%. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A solar control glazing panel for the exterior facade of a building, the glazing panel transmitting visible light in order to allow natural illumination of the interior of the building and in order to allow occupants of the building to see out, the glazing panel comprising:
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a first coating layer formed pyrolytically by chemical vapor deposition or by spray on a soda-lime float glass substrate, said first coating layer comprising tin and antimony oxides and having a Sb/Sn molar ratio ranging from 0.03 to 0.15; a second coating layer on the soda-lime float glass substrate, said second coating layer comprising tin oxide doped with fluorine; and at least one intermediate coating layer on the soda-lime float glass substrate, said intermediate layer being positioned on a side of the glass substrate in between the side of the glass substrate and the first coating layer, and wherein the second coating layer is positioned over the first coating layer, the glazing panel having; transmission of visible light characterized by a luminous transmittance (TL) measured under CIE standard Illuminant C of from 40 to 65%, and a combination of a low solar factor and low emissivity characterized by a solar factor (FS) of less than 70% and an emissivity of less than 0.4. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification