Heat-reflecting and/or electrically heatable laminated glass pane

• US 5,506,037 A
• Filed: 05/07/1993
• Issued: 04/09/1996
• Est. Priority Date: 12/09/1989
• Status: Expired due to Term

• Current Assignee: Saint-Gobain Vitrage International
• Original Assignee: Saint-Gobain Vitrage International
• Inventors: Termath, Gunter
• Primary Examiner(s): Nakarani, D. S.
• Assistant Examiner(s): LE, HOA T
• Application Number:
  US08/059,427
• Time in Patent Office: 1,068 Days
• Field of Search: 428/216, 428/31, 428/432, 428/434, 428/437, 428/469, 428/699, 428/433, 428/436, 428/442, 428/425.6, 428/336, 428/472, 428/701, 428/702, 359/360, 359/548, 359/549, 359/585, 65/60.2, 65/60.4, 296/84.1
• US Class Current: 428/216
• CPC Class Codes: B32B 17/10174 Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/1077 containing polyurethane
• CPC Class Codes: C03C 17/3644 the metal being silver
• CPC Class Codes: Y10T 428/24975 No layer or component greater than 5 mils thick
• CPC Class Codes: Y10T 428/265 1 mil or less
• CPC Class Codes: Y10T 428/31601 Quartz or glass
• CPC Class Codes: Y10T 428/3163 Next to acetal of polymerized unsaturated alcohol [e.g., formal butyral, etc.]

Abstract

A heat reflecting and/or electrically heatable laminated glazing system having two single glass panes bonded together by a thermoplastic film such as polyvinyl butyral is disclosed. One of these two panes includes a layered construction, preferably of a conductive silver layer and an dielectric layer, preferably of zinc oxide, which is disposed on the silver layer. A bonding layer is utilized to improve the bond between the thermoplastic film and the dielectric layer. The bonding layer comprises one of the metals in groups IV, V, or VII of the periodic system or an oxide of these metals.

Claims

1. A laminated glazing pane comprising:

a first glass pane which includes a layered construction bonded thereon; and

a second glass pane which includes a thermoplastic film thereon;

wherein the layered construction comprises a first metal layer, a first dielectric layer disposed on the first metal layer and a bonding layer directly bonded to the first dielectric layer and in contact with the thermoplastic film;

wherein said bonding layer comprises (1) zinc, (2) tin oxide, (3) at least one metal from the groups IV, V, or VIII of the periodic system and an alloy of these metals, or (4) an oxide of the metals of groups V or VIII; and

wherein the bonding layer bonds the layered construction to the thermoplastic film and comprises a material which is different than that of the dielectric layer.

2. The laminated glass pane according to claim 1, wherein the first metal layer is iron, nickel, an alloy of those metals, stainless steel or silver.

3. The laminated glass pane according to claim 1, wherein the first dielectric layer is a metal oxide or nitride.

4. The laminated glass pane according to claim 3, wherein the first dielectric layer is zinc oxide, tin oxide, indium tin oxide, tantalum oxide, titanium dioxide or titanium nitride.

5. The laminated glass pane according to claim 1, wherein the thermoplastic film is polyvinyl butyral, a polyurethane or polyvinyl chloride.

6. The laminated glass pane according to claim 1, wherein the bonding layer is an oxide of at least one metal from groups V or VIII of the periodic system.

7. The laminated glass pane according to claim 1, wherein the bonding layer is tin oxide.

8. The laminated glass pane according to claim 1, wherein the bonding layer is zinc or at least one metal from groups IV, V, or VIII of the periodic system.

9. The laminated glass pane according to claim 1, wherein the bonding layer is titanium, tantalum, zinc or a nickel-chromium alloy.

10. The laminated glass pane according to claim 1, wherein the layered construction further comprises a second dielectric layer disposed upon the first metal layer and a second metal layer disposed on the second dielectric layer, wherein the second dielectric layer and the second metal layer are positioned between the first metal layer and the first dielectric layer.

11. The laminated glass pane according to claim 10, wherein the second metal layer is iron, nickel, an alloy of those metals, stainless steel or silver.

12. The laminated glass pane according to claim 10, wherein the second dielectric layer is a metal oxide or nitride.

13. The laminated glass pane according to claim 12, wherein the second dielectric layer is zinc oxide, tin oxide, indium tin oxide, tantalum oxide, titanium dioxide or titanium nitride.

14. The laminated glass pane according to claim 10, wherein the thermoplastic film is polyvinyl butyral, a polyurethane or polyvinyl chloride.

20. The laminated glass pane according to claim 10 or 19 wherein the first metal layer is silver, the second metal layer is silver, the first dielectric layer is zinc oxide, the second dielectric layer is zinc oxide, and the bonding layer is tantalum oxide or tin oxide.

21. The laminated glass pane according to claim 1 or 15, wherein the first metal layer is silver, the first dielectric layer is zinc oxide, and the bonding layer is tantalum oxide or tin oxide.

22. The laminated glass pane according to claim 1 or 15, wherein the bonding layer has a thickness of between about 7 and 20 nanometers.

23. The laminated glass pane according to claims 1 or 21 wherein the bonding layer is tin oxide and the layered construction further comprises a second metal layer disposed between the first dielectric layer and the first metal layer.

24. The laminated glass pane according to claim 23, wherein the layered construction further comprises a second dielectric layer disposed between the first metal layer and the second metal layer.

25. The laminated glass pane according to claims 1 or 15, wherein the layered construction further comprises a second dielectric layer disposed between the first metal layer and the first dielectric layer.

26. The laminated glass pane according to claim 25, which further comprises a second metal layer disposed upon the second dielectric layer, and a third dielectric layer disposed upon the second metal layer, wherein the third dielectric layer contacts the first glass pane.

27. The laminated glass pane according to claim 26 wherein the first and second metal layers each comprises two layers of different metals.

28. The laminated glass pane according to claim 27 which further comprises a second bonding layer of a material which is different than that of the second dielectric layer, and a third bonding layer of a material which is different than that of the third dielectric layer;

wherein the second bonding layer is disposed between the layered construction and the second dielectric layer, and the third bonding layer is disposed between the second metal layer and the third dielectric layer.

29. The laminated glass pane according to claim 1 or 15 wherein the bonding layer comprises tin oxide.

15. A laminated glazing pane comprising:

a first glass pane which includes a layered construction bonded thereon; and

a second glass pane which includes a thermoplastic film of polyvinyl butyral, a polyurethane or polyvinyl chloride thereon;

wherein the layered construction comprises a first metal layer of iron, nickel, an alloy of iron or nickel, stainless steel or silver, a first dielectric layer of zinc oxide, tin oxide, indium tin oxide, tantalum oxide, titanium dioxide or titanium nitride disposed on the first metal layer, and a bonding layer directly bonded to the first dielectric layer and in contact with the thermoplastic film;

wherein said bonding layer comprises at least one metal from groups IV, V, or VIII of the periodic system, an alloy of these metals, zinc, tin oxide, or a metal oxide from groups V or VIII metals; and

wherein the bonding layer bonds the layered construction to the thermoplastic film and comprises a material which is different than that of the dielectric layer.

16. The laminated glass panel according to claim 15, wherein the bonding layer is tin oxide, or an oxide of at least one metal from groups, V, or VIII of the periodic system.

17. The laminated glass pane according to claim 15, wherein the bonding layer is zinc or at least one metal from groups IV, V, or VIII of the periodic system.

18. The laminated glass pane according to claim 15, wherein the bonding layer is titanium, tantalum, zinc or a nickel-chromium alloy.

19. The laminated glass pane according to claim 15, wherein the layered construction further comprises a second metal layer disposed upon the first dielectric layer and a second dielectric layer disposed upon the second metal layer, wherein the second metal layer and the second dielectric layer are positioned between the first dielectric layer and the first metal layer.