US 11,668,132 B2
Process for obtaining an insulating glazing
Lucile Henry, Compiegne (FR); Camille Morin, Paris (FR); Dominique Seignard, Compiegne (FR); and Erwan Baquet, Compiegne (FR)
Assigned to SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
Appl. No. 17/287,847
Filed by SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
PCT Filed Oct. 22, 2019, PCT No. PCT/EP2019/078766
§ 371(c)(1), (2) Date Apr. 22, 2021,
PCT Pub. No. WO2020/083939, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 1871278 (FR), filed on Oct. 23, 2018.
Prior Publication US 2021/0396070 A1, Dec. 23, 2021
Int. Cl. E06B 3/663 (2006.01); E06B 3/673 (2006.01)
CPC E06B 3/66333 (2013.01) [E06B 3/6733 (2013.01); E06B 2003/66338 (2013.01); E06B 2003/66385 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A process for obtaining an insulating glazing comprising first and second glass sheets that are held parallelly spaced apart with the aid of at least one transparent glass spacer adhesively bonded to the periphery of said glass sheets so as to make a gas-filled interlayer space, said process comprising:
providing said spacer, said spacer being substantially parallelepipedal and comprising at least two rough faces opposite one another, and two smooth faces opposite one another, then
assembling said spacer between the glass sheets, so that each rough face of said spacer is positioned close to an edge, and against an inner face of each of said glass sheets, the interstitial width between the rough faces of the spacer and the inner faces of the glass sheets being less than 0.01 mm, then
depositing, at external joint lines between the rough faces of the spacer and the inner faces of the glass sheets, a transparent adhesive, said adhesive moving by capillary action so as to cover the surface of said rough faces of the spacer, then
curing said adhesive,
wherein, at the end of said assembling, the interstitial width between the rough faces of the spacer and the inner faces of the glass sheets is at most 0.01 mm over an entire length of the spacer, and thus over an entire length of the edge of the glass sheet in a vicinity of which the spacer is placed, and
wherein the Rz roughness, within the meaning of the ISO 4287:1997 standard, of the rough faces of the spacer is within a range of from 1 to 10 μm.