US 12,473,224 B2
Shaped glass laminates and methods for forming the same
Michele Marie-Louise Fredholm, Vulaines sur Seine (FR)
Assigned to CORNING INCORPORATED, Corning, NY (US)
Filed by CORNING INCORPORATED, Corning, NY (US)
Filed on Apr. 15, 2024, as Appl. No. 18/635,667.
Application 18/635,667 is a continuation of application No. 17/899,903, filed on Aug. 31, 2022, granted, now 11,987,516.
Application 17/899,903 is a continuation of application No. 17/177,538, filed on Feb. 17, 2021, granted, now 11,465,927, issued on Oct. 11, 2022.
Application 17/177,538 is a continuation of application No. 15/899,689, filed on Feb. 20, 2018, granted, now 10,954,154, issued on Mar. 23, 2021.
Claims priority of provisional application 62/586,938, filed on Nov. 16, 2017.
Claims priority of provisional application 62/461,494, filed on Feb. 21, 2017.
Claims priority of provisional application 62/461,080, filed on Feb. 20, 2017.
Prior Publication US 2024/0279102 A1, Aug. 22, 2024
Int. Cl. B32B 17/10 (2006.01); B60J 1/00 (2006.01); C03B 23/025 (2006.01); C03B 23/03 (2006.01); C03B 23/035 (2006.01); C03C 3/076 (2006.01); C03C 3/087 (2006.01); C03C 3/091 (2006.01)
CPC C03B 23/0252 (2013.01) [B32B 17/10036 (2013.01); B32B 17/10082 (2013.01); B32B 17/101 (2013.01); B32B 17/1011 (2013.01); B32B 17/10119 (2013.01); B32B 17/10137 (2013.01); B32B 17/10761 (2013.01); B32B 17/1077 (2013.01); B32B 17/10788 (2013.01); B32B 17/10889 (2013.01); B60J 1/008 (2013.01); C03B 23/025 (2013.01); C03B 23/03 (2013.01); C03B 23/0357 (2013.01); C03C 3/087 (2013.01); B32B 2250/03 (2013.01); B32B 2250/40 (2013.01); B32B 2605/006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A laminate comprising:
a first curved glass substrate comprising a first major surface, a second major surface opposing the first major surface, a first thickness t1 defined between the first major surface and the second major surface, and the first curved glass substrate comprising a first viscosity at 630° C.;
a second curved glass substrate comprising a third major surface, a fourth major surface opposing the third major surface, a second thickness t2 defined between the third major surface and the fourth major surface, and the second curved glass substrate comprising a second viscosity at 630° C. that is greater than the first viscosity, wherein the t1 is from 2*t2 to 10*t2; and
an interlayer disposed between the first curved glass substrate and the second curved glass substrate and adjacent the second major surface and the third major surface;
wherein the first curved glass substrate has a first sag temperature and the second curved glass substrate has a second sag temperature that is at least 25° C. greater than the first sag temperature;
wherein a stack of a first substrate corresponding to the first curved glass substrate and a second substrate corresponding to the second curved glass substrate comprises an effective viscosity between the first viscosity and the second viscosity at a temperature (T) between the first sag temperature and the second sag temperature, the effective viscosity being determined by the equation: μeff(T)=((μ1(T)t1)/(t1+t2))+((μ2(T)t2)/(t1+t2)), where μ1(T) is the viscosity of the first substrate at the temperature (T) and μ2(T) is the viscosity of the second substrate at the temperature (T).