US 12,091,907 B2
Vacuum insulated glazing unit with dense side seal material
Søren Vejling Andersen, Hørsholm (DK); and Johnsen Simon, Hørsholm (DK)
Assigned to VKR HOLDING A/S, Horsholm (DK)
Appl. No. 17/413,131
Filed by VKR HOLDING A/S, Hørsholm (DK)
PCT Filed Nov. 28, 2019, PCT No. PCT/DK2019/050369
§ 371(c)(1), (2) Date Jun. 11, 2021,
PCT Pub. No. WO2020/125880, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 201870849 (DK), filed on Dec. 21, 2018.
Prior Publication US 2022/0065029 A1, Mar. 3, 2022
Int. Cl. E06B 3/673 (2006.01); E06B 3/66 (2006.01); E06B 3/663 (2006.01)
CPC E06B 3/6736 (2013.01) [E06B 3/6612 (2013.01); E06B 3/66333 (2013.01); E06B 3/67334 (2013.01); E06B 3/67391 (2013.01); E06B 2003/66338 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for producing a vacuum insulated glazing (VIG) unit, the method comprising:
providing a first glass pane having an inner surface with a peripheral edge;
positioning a side seal material on the peripheral edge of the inner surface of the first glass pane, wherein the side seal material comprises a solder glass material component;
pre-heating the side seal material to a pre-heating temperature (TPH) using a pre-heating heat source, wherein at the pre-heating temperature (TPH) the side seal material foams and densifies to form a dense side seal material, wherein during foaming of the side seal material gaseous inclusions from the side seal material outgasses, wherein the side seal material has:
an initial side seal density prior to being pre-heated;
a foaming side seal density during foaming of the side seal material, wherein the initial side seal density is larger than the foaming side seal density by at least 100%; and
a dense side seal density after pre-heating of the side seal material where the dense side seal material is formed, wherein the dense side seal density is larger than the foaming side seal density by at least 50%,
wherein the method further comprises:
providing a second glass pane having an inner surface,
providing spacers, and
assembling the VIG unit such that the VIG unit comprises:
the first glass pane and the second glass pane arranged in parallel with the inner surfaces opposing each other; and
spacers arranged between the opposed inner surfaces, and
arranging the dense side seal material peripherally between the first glass pane and the second glass pane creating a sealed cavity between the glass panes.