Haze-resistant low-emissivity coatings
AssigneeCardinal CG Company
InventorsKlaus Hartig, Annette J. Krisko
Life of this patent
Estimating the term…
Abstract
A substrate bearing a low-emissivity coating, the coating comprising two infrared-reflective layers separated by a middle coat, the middle coat comprising two zinc tin oxide film regions separated by a tin oxide film region.
Claims8
A sheet-like substrate having first and second generally-opposed major surfaces, at least one of the major surfaces bearing a low-emissivity coating, the coating comprising, in sequence, from the substrate outwardly:
- a) an inner dielectric layer;
- b) a first infrared-reflective layer;
- c) a middle coat comprising a first zinc tin oxide film region, a tin oxide film region, and a second zinc tin oxide film region, wherein said tin oxide film region is positioned between said first and second zinc tin oxide film regions and has a thickness of between about 5 angstroms and about 80 angstroms, and wherein said first zinc tin oxide film region is a graded film region that includes a substantially continuously increasing concentration of tin oxide and said second zinc tin oxide film region is a graded film region that includes a substantially continuously decreasing concentration of tin oxide;
- d) a second infrared-reflective layer;
- and
- e) an outer dielectric layer.
A sheet-like substrate having first and second generally-opposed major surfaces, at least one of the major surfaces bearing a low-emissivity coating, the coating comprising two infrared-reflective silver-containing layers separated by a middle coat, the middle coat comprises a zinc tin oxide film region→tin oxide film region →zinc tin oxide film region structure, wherein said →represents a gradual transition from one film composition to another, the tin oxide film region having a thickness of between about 5 angstroms and about 80 angstroms.
A sheet-like substrate having first and second generally-opposed major surfaces, at least one of the major surfaces bearing a low-emissivity coating, the coating comprising first, second and third infrared-reflective layers and one middle coat between the first and second infrared-reflective layers and another middle coat between the second and third infrared-reflective layers, each middle coat comprising a first zinc tin oxide film region, a tin oxide film region, and a second zinc tin oxide film region, the tin oxide film region having a thickness of between about 5 angstroms and about 80 angstroms, and wherein the first zinc tin oxide film region is a graded film region that includes a substantially continuously increasing concentration of tin oxide and the second zinc tin oxide film region is a graded film region that includes a substantially continuously decreasing concentration of tin oxide.
Dependencies are inferred from the claim text.