Coated air duct insulation sheets and the like and the method of coating such sheets
First Claim
1. An insulation sheet with a multilayered coating, comprising:
- an insulation sheet, the insulation sheet having first and second major surfaces, lateral edges and end edges;
a first discrete coating layer formed from a first foamed or frothed cross-linkable elastomeric aqueous emulsion coating composition applied directly to the first major surface of the insulation sheet with the concentration of the coating composition being substantially uniform over the first major surface; and
a second discrete coating layer formed from a second foamed or frothed cross-linkable elastomeric aqueous emulsion coating composition which differs from the first coating composition applied directly to a major surface of the first coating layer with the concentration of the coating composition being substantially uniform over the exposed major surface of the first coating layer and an exposed major surface of the coating layer having a generally smooth surface.
0 Assignments
0 Petitions
Accused Products
Abstract
An on-line method of forming a multilayered coating on a sheet of fibrous or foam insulation, includes: applying a first coating layer of a first coating composition directly to a first major surface of the insulation sheet; heating an exposed major surface of the first coating layer to stabilize the coating composition at the exposed major surface of the first coating layer so that the first coating layer remains an essentially discrete layer when a second coating layer is applied to the exposed major surface of the first coating layer and to only partially cure the coating composition at the exposed major surface of the coating composition so that a second coating layer applied to the exposed major surface of the first coating layer will readily bond to the first coating layer; applying a second coating layer of a second coating composition directly to the exposed major surface of the first coating layer subsequent to heating the exposed major surface of the first coating layer; and heating the insulation sheet and the first and second coating layers, subsequent to the application of the second coating layer, until the first and second coating layers are substantially dried and cured.
-
Citations
6 Claims
-
1. An insulation sheet with a multilayered coating, comprising:
-
an insulation sheet, the insulation sheet having first and second major surfaces, lateral edges and end edges;
a first discrete coating layer formed from a first foamed or frothed cross-linkable elastomeric aqueous emulsion coating composition applied directly to the first major surface of the insulation sheet with the concentration of the coating composition being substantially uniform over the first major surface; and
a second discrete coating layer formed from a second foamed or frothed cross-linkable elastomeric aqueous emulsion coating composition which differs from the first coating composition applied directly to a major surface of the first coating layer with the concentration of the coating composition being substantially uniform over the exposed major surface of the first coating layer and an exposed major surface of the coating layer having a generally smooth surface. - View Dependent Claims (2, 3, 4, 5, 6)
the insulation sheet is a fibrous air duct insulation sheet.
-
-
3. The insulation sheet with a multilayered coating according to claim 1, wherein:
the insulation sheet is a foam air duct insulation sheet.
-
4. The insulation sheet with a multilayered coating according to claim 1, wherein:
the first coating layer is more elastic than the second coating layer; and
the second coating layer is more abrasion resistant than the first coating layer.
-
5. The insulation sheet with a multilayered coating according to claim 4, wherein:
the insulation sheet is a fibrous air duct insulation sheet.
-
6. The insulation sheet with a multilayered coating according to claim 4, wherein:
the insulation sheet is a foam air duct insulation sheet.
Specification