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US 4,898,789 AGranted
Low emissivity film for automotive heat load reduction
AssigneePPG Industries, Inc.
InventorJames J. Finley
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Abstract
A multiple-layer, high transmittance, low emissivity coated article is disclosed comprising at least two infrared reflective metal layers alternatingly combined with at least three metal oxide antireflective layers to produce a coating with superior low emissivity and low visible reflectance, especially for use to reduce heat load in automobiles.
Claims11
A high transmittance, low emissivity article comprising:
- a. a transparent nonmetallic substrate;
- b. a first transparent antireflective metal oxide film deposited on a surface of said substrate;
- c. a first transparent infrared reflective metallic film deposited on said antireflective metal oxide film;
- d. a transparent metal-containing primer film deposited on said infrared reflective metallic film;
- e. a second transparent antireflective metal oxide film deposited on said primer film;
- f. a second transparent infrared reflective metallic film deposited on said second transparent antireflective metal oxide film;
- g. a second transparent metal-containing primer film deposited on said second infrared reflective metallic film;
- and
- h. a third transparent antireflective metal oxide film deposited on said second primer film.
6 more elements
Dependencies are inferred from the claim text.