US 12,227,448 B2
Flash annealing of silver coatings
Patrick Fisher, Pittsburgh, PA (US); James W. McCamy, Export, PA (US); Paul A. Medwick, Wexford, PA (US); Adam D. Polcyn, Pittsburgh, PA (US); James P. Thiel, Lihue, HI (US); and Andrew V. Wagner, Pittsburgh, PA (US)
Assigned to Vitro Flat Glass LLC, Cheswick, PA (US)
Filed by Vitro Flat Glass LLC, Cheswick, PA (US)
Filed on Oct. 1, 2021, as Appl. No. 17/491,605.
Application 17/491,605 is a division of application No. 15/669,133, filed on Aug. 4, 2017, granted, now 11,220,455.
Prior Publication US 2022/0081355 A1, Mar. 17, 2022
Int. Cl. B32B 15/04 (2006.01); B32B 17/06 (2006.01); C03C 17/36 (2006.01)
CPC C03C 17/3668 (2013.01) [C03C 17/36 (2013.01); C03C 17/3639 (2013.01); C03C 17/3644 (2013.01); C03C 17/3649 (2013.01); C03C 17/3655 (2013.01); C03C 2217/216 (2013.01); C03C 2217/231 (2013.01); C03C 2217/256 (2013.01); C03C 2217/258 (2013.01); C03C 2217/948 (2013.01); C03C 2218/156 (2013.01); C03C 2218/32 (2013.01); C03C 2218/34 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A non-tempered transparency comprising:
a. a substrate of thickness greater than 2.0 mm;
b. a first dielectric layer over at least a portion of the substrate;
c. a first metallic layer over at least a portion of the first dielectric layer;
d. a first primer layer over at least a portion of the first metallic layer and having a thickness ranging from 1 to 2 nm;
e. a second dielectric layer over at least a portion of the first primer layer;
f. a second metallic layer over at least a portion of the second dielectric layer;
g. a second primer layer over at least a portion of the second metallic layer and having a thickness ranging from 1 to 2 nm;
h. a third dielectric layer over at least a portion of the second primer layer;
i. a third metallic layer over at least a portion of the third dielectric layer;
j. a third primer layer over at least a portion of the third metallic layer and having a thickness ranging from 1 to 2 nm;
k. a fourth dielectric layer over at least a portion of the third primer layer; and
l. An overcoat over at least a portion of the fourth dielectric layer,
wherein at least one of the first metallic layer, the second metallic layer, and/or the third metallic layer is a discontinuous metallic layer,
wherein the non-tempered transparency is flashed annealed with at least one flash of non-coherent light in the visible spectrum from a source with each flash having a flash intensity ranging from 1 J/cm2 to 7 J/cm2 for a pulse length between 0.1 ms and 10 ms, thereby resulting in a flashed non-tempered transparency having an increased visible light transmittance in combination a transmitted aesthetic CIELAB L*a*b* color value of L* ranging from 87 to 89, a* ranging from −3 to −5, and b* ranging from 3 to 5.