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US 5,059,295 AGranted
Method of making low emissivity window
AssigneePPG Industries, Inc.
InventorJames J. Finley
Life of this patent
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Abstract
A multiple-layer, high transmittance, low emissivity coated article which can be subjected to high temperature processing such as bending, annealing, tempering, laminating or glass welding is disclosed. The article comprises a transparent nonmetallic substrate, a first transparent antireflective metal oxide film, an infrared reflective metal film, a metal-containing primer layer, and a second antireflective metal oxide film.
Claims1
A method of making a temperable low emissivity window comprising the steps of
- sputtering a first layer of a mixture of tin oxide and zinc oxide onto a glass substrate,
- sputtering a second layer of titanium,
- sputtering a third layer of silver,
- sputtering a fourth layer of titanium,
- sputtering a fifth layer of a mixture of tin oxide and zinc oxide,
- sputtering a sixth layer of titanium oxide,
- then heating and shaping the glass at a temperature where the titanium layers on each side of the silver layer will oxidize but protect the silver from oxidizing.
4 more elements
Dependencies are inferred from the claim text.