DECORATIVE GLAZING

• US 20110096555A1
• Filed: 12/22/2008
• Published: 04/28/2011
• Est. Priority Date: 12/20/2007
• Status: Active Grant

• Current Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Inventors: Bernheim, Isabelle, Gouy, Aurelien, Pires, Isabelle
• Granted Patent: US 9,090,120 B2
• Time in Patent Office: Days
• US Class Current: 362/363
• 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 17/10247 Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons containing metal wires for aesthetic reasons B32B17/10422
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B44F 1/066 comprising at least two transparent elements, e.g. sheets, layers layered products of glass and synthetic resin containing decorations or patterns B32B17/10247; window units comprising two or more parallel glass panes E06B3/66
• CPC Class Codes: Y10T 428/24612 Composite web or sheet
• CPC Class Codes: Y10T 428/24868 Translucent outer layer
• CPC Class Codes: Y10T 428/3163 Next to acetal of polymerized unsaturated alcohol [e.g., formal butyral, etc.]

Abstract

The subject of the invention is laminated glazing comprising at least two glass sheets (1, 4) and at least one polymeric interlayer (2) made of polyvinyl butyral and binding said glass sheets together. The glazing is characterized in that at least one lacquer layer (3) is placed between the at least two glass sheets (1, 4).

Claims

1. A laminated glazing assembly comprising at least two glass sheets and at least one polymer interlayer comprising polyvinyl butyral, wherein said glass sheets are bonded together and at least one film of lacquer is placed between the at least two glass sheets.

2. The glazing assembly as claimed in claim 1, wherein the at least one film of lacquer is in contact with the at least one polymer interlayer.

3. The glazing assembly as claimed in claim 1, wherein the film of lacquer is opaque and the polymer interlayer is transparent.

4. The glazing assembly as claimed in claim 1, consisting of two glass sheets, a film of lacquer deposited on a first glass sheet and a polymer interlayer which is in contact with said film of lacquer and provides the bond between said first glass sheet and a second glass sheet.

5. The glazing assembly as claimed in claim 1, wherein the film of lacquer has, at least on a surface of the film, chemical functional groups capable of chemically reacting with at least one of hydroxyl and carbonyl functional groups.

6. The glazing assembly as claimed in claim 1, wherein the lacquer has a ratio of areas of the absorption bands associated with hydroxyl groups to areas of absorption bands associated with alkyl or alkane groups of equal to or greater than 0.4 when the ratio is measured by an ATR infrared spectroscopy.

7. The glazing assembly as claimed in claim 1, wherein the film of lacquer has a roughness of between 10 and 90 microns.

8. The glazing assembly as claimed in claim 1, wherein the film of lacquer has a surface tension of between 30 and 70 N/mm².

9. The glazing assembly as claimed in claim 1, wherein the lacquer comprises an acrylic-resin-based binder, said lacquer being in particular crosslinked with at least one of melamine and an isocyanate.

10. The glazing assembly as claimed in claim 1, wherein the lacquer has a water permeability of less than 10⁻

6 cm³·

cm·

cm<sup>−

2</sup>·

s<sup>−

1</sup>·

Pa<sup>−

1</sup>.

11. The glazing assembly as claimed in claim 1, wherein an adhesion promoter, is present in the form of a film interposed (1) between the film of lacquer and a glass sheet, (2) between the film of lacquer and the polymer interlayer, or (1) and (2), or dispersed in the lacquer.

12. The glazing assembly as claimed in claim 1, wherein at least one of a reflecting film, and a screen-printed or inkjet-printed decoration is interposed between the film of lacquer and a glass sheet, said at least one of reflecting film and decoration being optionally coated with an adhesion-promoting film.

13. The glazing assembly as claimed in claim 1, wherein the film of lacquer comprises pigments resistant to at least one of ultraviolet radiation and mineral fillers in a content of between 40 and 70%.

14. The glazing assembly as claimed in claim 1, wherein at least one of the glass sheets has, on at least one of faces of the glass sheet, raised features obtained by at least one of rolling, acid frosting, sandblasting and etching, or wherein an entire external face of the at least one of the glass sheets is frosted by hydrochloric acid or by sandblasting.

15. The glazing as claimed in claim 1, wherein at least one of the glass sheet has, on at least one of faces of the glass sheet, at least one functional layer conferring at least one of optical, nonslip, and surface properties.

16. The glazing as claimed in claim 1, wherein light-emitting diodes are placed between the polymer interlayer and at least one glass sheet.

17. A method for obtaining the glazing assembly as claimed in claim 1, comprising placing at least one polymer interlayer between at least one glass sheet coated with a film of lacquer and at least one other glass sheet to form an assembly and then subjecting the assembly to a thermocompression treatment so as to bond said glass sheets together.

18. The method as claimed in claim 17, comprising subjecting the film of lacquer to plasma treatment, before the thermocompression treatment.

19. A partition, door, furniture glazing, ceiling, balustrade, luminaire cover, wall covering or staircase step, comprising the glazing assembly as claimed in claim 1.