	US 12,091,354 B2
	Method for producing laminated glazing without enamel sticking to the back-glass
Juliette Jamart, Compiegne (FR); Valérie Chane-Pane, Sainte-Clotilde (FR); and Leila Dumotier, Margny les Compiegne (FR)
Assigned to SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
Appl. No. 17/254,694
Filed by SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
PCT Filed Jun. 25, 2019, PCT No. PCT/FR2019/051562 § 371(c)(1), (2) Date Dec. 21, 2020, PCT Pub. No. WO2020/002825, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 1870775 (FR), filed on Jun. 29, 2018.
Prior Publication US 2021/0179486 A1, Jun. 17, 2021
Int. Cl. C03C 17/00 (2006.01); C03B 23/025 (2006.01)

CPC C03C 17/008 (2013.01) [C03B 23/0252 (2013.01); C03C 2217/45 (2013.01); C03C 2217/485 (2013.01); C03C 2218/119 (2013.01)]

10 Claims

1. A process for manufacturing a laminated glazing comprising at least a first glass sheet and a second glass sheet, the process comprising:

printing a face of the first glass sheet intended to be oriented toward the second glass sheet with a liquid enamel which is dried at a temperature not exceeding 400° C., then

bending the first and second glass sheets together in contact with one another in their relative position of destination in the laminated glazing, by heating at a softening temperature of the glass,

wherein the liquid enamel is an aqueous silicate paint comprising a mineral powder made of a refractory powder of pigments and a silicate binder powder, in the absence of glass frit, wherein the silicate binder powder consists of all solid constituents of a solid content of the mineral powder other than CuO, Fe₂O₃, and MnO₂, wherein the pigments comprise at least one of Fe₂O₃, CuO and MnO₂, and wherein a weight ratio of the powder of pigments to the silicate binder powder is greater than 1.