US 11,701,865 B2
Laminated glazing reflecting infrared
François Compoint, Paris (FR); and Antoine Diguet, Paris (FR)
Assigned to SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
Appl. No. 17/442,948
Filed by SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
PCT Filed Mar. 19, 2020, PCT No. PCT/EP2020/057608
§ 371(c)(1), (2) Date Sep. 24, 2021,
PCT Pub. No. WO2020/193363, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 1903180 (FR), filed on Mar. 27, 2019.
Prior Publication US 2022/0184929 A1, Jun. 16, 2022
Int. Cl. B32B 17/10 (2006.01)
CPC B32B 17/10036 (2013.01) [B32B 17/1011 (2013.01); B32B 17/1077 (2013.01); B32B 17/10229 (2013.01); B32B 17/10633 (2013.01); B32B 17/10651 (2013.01); B32B 17/10743 (2013.01); B32B 17/10761 (2013.01); B32B 17/10788 (2013.01); B32B 17/10871 (2013.01); B32B 17/10972 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/732 (2013.01); B32B 2605/006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A laminated glazing comprising an outer sheet of clear glass and an inner sheet of clear glass, which are bonded to one another by an interlayer, comprising the succession of the following elements, from an inside to an outside of said laminated glazing:
said inner sheet of clear glass,
a stack of layers reflecting infrared radiation between 780 nm and 2500 nm,
said interlayer comprising:
a) a first thin sheet comprising or consisting of a layer of a polymer compound or of a varnish, said layer of a polymer compound or said varnish comprising a dye, said dye absorbing substantially all of the light within the visible region between 380 and 780 nm and being substantially transparent to infrared radiation, the first thin sheet being arranged over said stack of layers such that solar light that is incident on the laminated glazing passes through the first thin sheet before reaching said stack of layers so that (a) visible light of the solar light is absorbed by the first thin sheet and infrared radiation is allowed to pass through the first thin sheet and is then reflected by said stack of layers back in a direction toward the first thin sheet and (b) a light transmission TL of the laminated glazing is from 8 to 20% and a solar total transmittance (TTS) of the laminated glazing is from 20 to 35%,
b) a second thin sheet of a plastic that is not bulk-tinted,
said outer sheet of clear glass.