Functionalized security glazing

• US 20070020442A1
• Filed: 07/15/2004
• Published: 01/25/2007
• Est. Priority Date: 07/16/2003
• Status: Active Grant

• Current Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Inventors: Giron, Jean-Christophe, Beteille, Fabien, Fanton, Xavier, Schuett, Juergen
• Granted Patent: US 8,102,585 B2
• Time in Patent Office: Days
• US Class Current: 428/192
• CPC Class Codes: B32B 17/10005 laminated safety glass or glazing
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• 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 17/10302 Edge sealing
• CPC Class Codes: B32B 17/10513 Electrochromic layer
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 17/1077 containing polyurethane
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B60R 1/088 using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors
• CPC Class Codes: G02F 1/133 Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements arrangements or circuits for control of liquid crystal elements in a matrix, not structurally associated with these elements G09G3/36
• CPC Class Codes: G02F 1/153 Constructional details
• CPC Class Codes: Y10T 428/24777 Edge feature
• CPC Class Codes: Y10T 428/24942 including components having same physical characteristic in differing degree
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]

Abstract

Glazing assembly, comprising in succession:

• • a first rigid substrate (S1),
  • a second rigid substrate (S2),
  • at least one active system (3) comprising at least one film and placed between the substrates (S1 and S2),
  • at least one polymer film (f1) having the function of retaining fragments of the glazing assembly should it break, the said film being placed between the substrate (S1) and the substrate (S2), characterized in that the active system (3) is on the inner face (2) of the substrate (S1).

Claims

1. A glazing assembly, comprising in succession:

a first rigid substrate (S1);

a second rigid substrate (S2);

at least one active system (3) comprising a multilayer, comprising at least one thin film and placed between the substrates (S1 and S2); and

at least one polymer film (f1) comprising the function of retaining fragments of the glazing assembly should the glazing assembly break, the at least one polymer film being placed between the substrate (S1) and the substrate (S2);

wherein the active system (3) is on the inner face (2) of the substrate (S1).

2. The glazing assembly according to claim 1, wherein the active system comprises an electrically controllable system comprising variable optical properties, variable energy properties, or a combination thereof, wherein the electrically controllable system is at least one system selected from the group consisting of an electrochromic system, an optical valve, a viologen-based system, a liquid-crystal system, and an electroluminescent system.

3. The glazing assembly according to claim 1, wherein the active system comprises a thin film or a thin-film multilayer with a thermal function, of the low-emissivity or solar-protection type, an acoustic function, of the acoustic attenuation coating type, or an optical function, of the decorative or absorbent, thermochromic or thermotropic type.

4. The glazing assembly according to claim 1, wherein the substrates (S1) and (S2) are made of glass.

5. The glazing assembly according to claim 1, wherein the total thickness (e₁₊₂) of the substrates (S1) and (S2) and of all the materials placed between them is less than or equal to 8 mm.

6. The glazing assembly according to claim 1, wherein the total thickness (e₁₊₂) of the substrates (S1) and (S2) and of all the materials placed between them is less than or equal to 30 mm.

7. The glazing assembly according to claim 1, wherein the substrates (S1) and (S2) have substantially identical shapes and substantially identical dimensions.

8. The glazing assembly according to claim 1, wherein the substrates (S1) and (S2) have different dimensions and substantially identical shapes.

9. The glazing assembly according to claim 1, wherein the glazing assembly further comprises an opacifying peripheral coating, wherein the opacifying peripheral coating is of the screen-printed type, and wherein the opacifying peripheral coating is applied to at least one part of the glazing assembly selected from the group consisting of around the periphery of face (2) on the substrate (S1), around the periphery of face (3) on the substrate (S2), and around the periphery of face (4) on the substrate (S2).

10. The glazing assembly according to claim 1, wherein the glazing assembly further comprises at least one margining line positioned on the periphery of the face (2) located on the substrate (S1), on the periphery of the face (3) located on the substrate (S2), or a combination thereof.

11. The glazing assembly according to claim 1, wherein the glazing assembly further comprises a first peripheral seal in contact with the facing faces of the substrates.

12. The glazing assembly according to claim 11, wherein the glazing assembly further comprises a second peripheral seal in contact with the edges of the substrates.

13. The glazing assembly according to claim 12, wherein the first and second peripheral seals are formed by extrusion or encapsulation.

14. The glazing assembly according to claim 12, wherein the second peripheral seal is flush with the outer face of the first substrate.

15. The glazing assembly according to claim 12, wherein the first peripheral seal, the second peripheral seal, or the first and the second peripheral seal, at least partly fill an open peripheral groove defined by a recess between the two substrates.

16. The glazing assembly according to claim 12, wherein the first peripheral seal, the second peripheral seal, or the first and second peripheral seals are penetrated by connection elements of the active system, at least partly comprise mechanical reinforcement elements, or a combination thereof.

17. A method of forming an article comprising,

forming the article with the glazing assembly of claim 1;

wherein the article is selected from the group consisting of a window, a sunroof, a skylight, a display panel, a display case, and a piece of furniture.

18. The glazing assembly according to claim 1, wherein the glazing assembly passes the safety tests of the ECE R43 and ANSI Z26.1. standards.

21. The glazing assembly according to claim 1, wherein the glazing assembly comprises at least one transparent substrate of polygonal shape, wherein the at least one transparent substrate comprises at least one property selected from the group consisting of flat, curved, partially curved, clear, and bulk-tinted.

22. The glazing assembly according to claim 1, wherein the glazing assembly comprises an opaque, opacified or mirror substrate.

19-20. -20. (canceled)

23. (canceled)