Claims
- 1. A method of making a laminated glazing unit comprising:
- sputter coating a surface of a substrate ply with a first film of dielectric material and then sputter coating thereover a substantially transparent, electrically conductive coating by sputter deposition of an electrically conductive film of silver metal over the first film of dielectric material in a non-oxidizing atmosphere, then sputter deposition of an adhesion film selected from the group consisting of copper or zinc over the film of silver metal in a non-oxidizing atmosphere and then sputter depositing a film of tantalum pentoxide over the adhesion film; and
- then laminating the coated surface of the substrate ply to a laminating ply of polymeric material.
- 2. The method of claim 1 wherein the substrate ply is glass, the laminating ply is PVB, the first film of dielectric material is zinc oxide.
- 3. The method of claim 1 wherein the adhesion film is copper.
- 4. The method of claim 1 where the sputter deposition of the tantalum pentoxide film comprises first sputter deposition of a sacrificial layer of tantalum metal by sputtering tantalum in a non-oxidizing atmosphere, followed immediately by sputter deposition of tantalum in an oxidizing atmosphere, the sacrificial layer being substantially oxidized upon exposure to said oxidizing atmosphere.
Parent Case Info
This application is a division of application Ser. No. 07/751,377, filed on Aug. 28, 1991, now U.S. Pat. No. 5,229,205, which, is turn, was a division of application Ser. No. 07/631,112, filed on Dec. 20, 1990, now U.S. Pat. No. 5,069,968.
US Referenced Citations (23)
Divisions (2)
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Number |
Date |
Country |
Parent |
751377 |
Aug 1991 |
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Parent |
631112 |
Dec 1990 |
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