US 11,717,848 B2
Multiple immediate pass application of high thickness spray foams
Chanel Charbonneau, Lone Tree, CO (US); Yusheng Zhao, Littleton, CO (US); Elam Leed, Littleton, CO (US); and Kathryn Miks, Littleton, CO (US)
Assigned to Johns Manville, Denver, CO (US)
Filed by JOHNS MANVILLE, Denver, CO (US)
Filed on Sep. 30, 2020, as Appl. No. 17/38,626.
Prior Publication US 2022/0097096 A1, Mar. 31, 2022
Int. Cl. B05D 1/02 (2006.01); B05D 7/00 (2006.01); B32B 5/20 (2006.01); B32B 23/04 (2006.01); B32B 27/36 (2006.01)
CPC B05D 1/02 (2013.01) [B05D 7/56 (2013.01); B32B 5/20 (2013.01); B32B 23/048 (2013.01); B32B 27/36 (2013.01); B32B 2250/04 (2013.01); B32B 2266/0264 (2013.01); B32B 2266/08 (2013.01); B32B 2307/304 (2013.01); B32B 2607/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of applying a closed cell spray foam insulation, comprising:
spraying a first layer of a closed cell spray foam insulation onto a vertical substrate, wherein a B-side mixture of the closed cell spray foam insulation comprises a polyol blend comprising a polyester polyol having a functionality of at least about 3.0 and a polyether polyol, wherein the polyester polyol comprises a viscosity of between about 4,500 and 7,500 centipoise at 25° C.; and
spraying at least one additional layer of the closed cell spray foam insulation against the first layer within 5 minutes of spraying the first layer, wherein each of the first layer and the at least one additional layer has a thickness of between about 1.5 inches and 2.5 inches.