Multiple immediate pass application of high thickness spray foams
AssigneeJohns Manville
InventorsChanel Charbonneau, Yusheng Zhao, Elam Leed, Kathryn Miks
Life of this patent
Estimating the term…
Abstract
A method of applying a closed cell spray foam insulation may include spraying a first layer of a closed cell spray foam insulation into a wall cavity. A B-side mixture of the closed cell spray foam insulation may include a polyol blend having a polyester polyol having a functionality of at least about 3.0 and a polyether polyol. The method may include 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.
Claims15
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.
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:
- the closed cell spray foam insulation comprises an A-side mixture and a B-side mixture;
- the A-side mixture of the closed cell spray foam insulation comprises one or more polyisocyanate compounds;
- and
- the 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 two additional layers of the closed cell spray foam insulation against the first layer within 5 minutes of spraying a previous layer, wherein each of the first layer and each of the at least two additional layers has a thickness of between about 1.5 inches and 2.5 inches;
- and
- wherein a maximum temperature of the first layer is less than a self-ignition temperature of the closed cell spray foam insulation.
Dependencies are inferred from the claim text.