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US 2017/0321028 A1Published application
System and method for making high-density cover boards
AssigneeJohns Manville
InventorLeah M. Dougherty
Life of this patent
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Abstract
A high-density foam cover board, including a high-density foam layer, wherein the high-density foam layer comprise polyurethane, polyisocyanurate, a filler, and a viscosity additive.
Claims20
A high-density foam cover board, comprising:
- a high-density foam layer, wherein the high-density foam layer comprises polyurethane, polyisocyanurate, a filler, and a viscosity additive;
- wherein the high-density foam layer has a density greater than 3 pounds per cubic foot.
A manufacturing system for making a foam cover board, comprising:
- a first chemical line that delivers a first mixture to a mixing head, the first chemical line comprising:
- a polyol source;
- a first mixer that mixes polyol from the polyol source with one or more catalysts and a blowing agent;
- a first pump fluidly coupled to the first mixer and configured to pump the first mixture to the mixing head;
- a second chemical line delivers a second mixture to the mixing head, the second chemical line comprising:
- an isocyanate source;
- a second pump coupled to the isocyanate source and configured to pump isocyanate from the isocyanate source to the mixing head;
- a filler source;
- and
- wherein the manufacturing system combines filler from the filler source with the first mixture and the second mixture to form the foam cover board.
7 more elements
A method of making a foam cover board with a filler, comprising:
- flowing a first mixture to a mixing head, wherein the first mixture comprises polyol and at least one catalyst;
- flowing a second mixture to the mixing head, wherein the second mixture comprises isocyanate;
- combining a filler with the first mixture and the second mixture to form a foam cover board.
Dependencies are inferred from the claim text.