US 11,702,883 B2
Manufacture of laminated glazing
Stéphane Berard, Mouy (FR); Alexandre Hennion, Venette (FR); and Philippe Frebourg, Senlis (FR)
Assigned to SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
Filed by SAINT-GOBAIN GLASS FRANCE, Courbevoie (FR)
Filed on Jun. 16, 2020, as Appl. No. 16/902,818.
Application 16/902,818 is a continuation of application No. 15/594,112, filed on May 12, 2017, granted, now 10,724,292.
Application 15/594,112 is a continuation of application No. 14/351,077, granted, now 9,670,714, issued on Jun. 6, 2017, previously published as PCT/FR2012/052329, filed on Oct. 12, 2012.
Claims priority of application No. 1159322 (FR), filed on Oct. 14, 2011.
Prior Publication US 2021/0017807 A1, Jan. 21, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. E06B 3/673 (2006.01); C03B 23/025 (2006.01); B32B 17/10 (2006.01); C03B 33/07 (2006.01); C03B 23/023 (2006.01); C03B 23/03 (2006.01); C03B 23/035 (2006.01); C03B 27/004 (2006.01); C03B 27/04 (2006.01); C03B 27/044 (2006.01); B60J 1/00 (2006.01); B60J 7/043 (2006.01)
CPC E06B 3/673 (2013.01) [B32B 17/10036 (2013.01); B32B 17/1099 (2013.01); B32B 17/10293 (2013.01); B32B 17/10761 (2013.01); B32B 17/10981 (2013.01); B60J 1/001 (2013.01); B60J 7/043 (2013.01); C03B 23/023 (2013.01); C03B 23/0235 (2013.01); C03B 23/0252 (2013.01); C03B 23/0258 (2013.01); C03B 23/03 (2013.01); C03B 23/0352 (2013.01); C03B 27/004 (2013.01); C03B 27/0404 (2013.01); C03B 27/0413 (2013.01); C03B 27/0442 (2013.01); C03B 33/078 (2013.01); Y10T 29/49826 (2015.01); Y10T 428/24322 (2015.01); Y10T 428/24612 (2015.01); Y10T 428/24628 (2015.01)] 19 Claims
OG exemplary drawing
 
1. A process for manufacturing a bent laminated glazing, comprising:
manufacturing a first bent laminated glazing comprising first and second glass substrates that are laminated to each other, the first bent laminated glazing having a peripheral edge with first compressive edge stresses, each of the first and second glass substrates comprising a local zone comprising second compressive stresses and extending outside the peripheral edge with the first compressive edge stresses, the local zone of the first glass substrate facing and being superposed with the local zone of the second glass substrate, and
after manufacturing said first bent laminated glazing, cutting said first bent laminated glazing through its entire thickness along a line included in said local zone of each of the first and second glass substrates in order to form local cut edges having second compressive edge stresses outside the peripheral edge with first compressive edge stresses, the cutting of said first bent laminated glazing producing a second bent laminated glazing having said peripheral edge with the first compressive edge stresses and said local cut edges having the second compressive edge stresses,
wherein the local zone in each of the first and second glass substrates that comprises the second compressive stresses is formed by applying a local cooling on the first and second glass substrates to introduce the second compressive stresses in each local zone, said local cooling being a faster cooling process than a general cooling of the first and second glass substrates that introduces the first compressive edge stresses.