Duct board with water repellant mat
AssigneeCertainTeed Corporation
InventorsJohn O. Ruid, Murray Toas, Wayne E. Shaw
Life of this patent
Estimating the term…
Abstract
A duct board or duct liner comprises: an insulating layer formed from fibrous material bound with a resin binder, an outer facing layer adhered to an outer surface of the insulating layer, and a water repellant mat facing adhered to an interior surface of the insulating layer opposite the outer surface to form a duct board material. The mat facing provides sufficient water repellency to repel a mixture of about 40% isopropanol and about 60% water. The duct board or duct liner material may be formed into a tubular shape capable of conducting air, with the mat facing on the interior of the tubular shape.
Claims15
A duct board or duct liner product, comprising:
- an insulating layer formed from fibrous material bound with a resin binder;
- an outer facing layer adhered to an outer surface of the insulating layer;
- and
- a water repellant mat facing adhered to an interior surface of the insulating layer opposite the outer surface to form a duct board material, the mat facing providing sufficient water repellency to repel a mixture of at least about 40% isopropanol and about 60% water,
- wherein the mat facing comprises non-woven glass fibers bound with an acrylic resin with a water repellant fluorocarbon or silicone.
A duct board or duct liner product, comprising:
- an insulating layer formed from fibrous material bound with a resin binder;
- an outer facing layer adhered to an outer surface of the insulating layer;
- and
- a water repellant mat facing adhered to an interior surface of the insulating layer opposite the outer surface to form a duct board material, the mat facing providing sufficient water repellency to repel a mixture of at least about 40% isopropanol and about 60% water, facing comprises
- wherein the mat facing comprises non-woven glass fibers bound with an acrylic resin with a water repellant fluorocarbon or silicone,
- wherein the resin binder in at least a portion of said insulating layer is a phenolic resin and the water repellant mat facing is adhered to the interior surface using an adhesive comprising the same phenolic resin as the resin binder in said portion of said insulating layer and a hydrophobic agent.
Dependencies are inferred from the claim text.