Dual silver layer low-e glass coating system and insulating...

Details Dual silver layer low-e glass coating system and insulating... Dual silver layer low-e glass coating system and insulating...

E - Fixed Constructions

06

B

E06B 5/18 (2006.01) C03C 17/36 (2006.01)

Patent

CA 2167444

A sputter-coated glass layer system particularly useful in insulating glass units ("IGs"), which includes dual layers of silver separated by a layer of Si3N4 having a thickness of about 700.ANG. - 1,100.ANG. and further including an undercoat and an overcoat of Si3N4 having thicknesses of about 300.ANG. - 550.ANG. and about 350.ANG. - 700.ANG. respectively, such that a glass so coated achieves normal emissivity values (En's) of less than about 0.02 - 0.09 with good durability and very low reflectance.

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