Reflective coatings for glass articles, methods of deposition, and articles made thereby
View Patent ↗The present invention is directed toward a method for coating an article by placing the article in a coating apparatus comprising at least one coating chamber having at least one air conduit in flow communication with the coating chamber via an air pathway. A portion of the article extends into a shielding member. At least one coating member is positioned in the coating chamber and is in flow communication with a source of titanium-containing coating material. The coating member deposits the coating material onto the exterior of the article to form a coating. At least one exhaust member is in flow communication with the coating chamber via an exhaust pathway for removing excess coating material from the coating chamber.
1. A method for coating an article having an interior and an exterior comprising:
placing an article to be coated into a coating chamber of a coating apparatus, wherein the article is a container having an interior and an exterior;
depositing a titania coating material onto a portion of the exterior of the article within the coating chamber to form a titania coating on a portion of the exterior of the article, wherein the titania coating has a thickness in the range of 200 Å to 800 Å and provides a luminous reflectance in the range of 12% to 38%;
shielding a portion of the exterior of the container such that the portion shielded is not coated, wherein the shielding is accomplished by a structural shielding member configured to surround a portion of the article such that the portion of the article not to be coated extends into the structural shielding member;
transferring air into the coating apparatus via an air pathway, wherein the air pathway directs the air through the structural shielding member and around the structural shielding member; and
removing excess coating material from the coating apparatus via at least one exhaust member.
2. The method of claim 1 , wherein the deposition step is selected from the group consisting of chemical vapor deposition and spray pyrolysis.
3. The method of claim 1 , wherein the titania coating material is selected from the group consisting of tetraisopropyl titanate, titanium tetrachloride, titanyl acetylacetonate, and combinations and mixtures thereof.