Transparent glazing and use thereof in a chilling chamber door comprising in particular a glazing under vacuum

• US 20060159906A1
• Filed: 12/14/2005
• Published: 07/20/2006
• Est. Priority Date: 05/25/1999
• Status: Abandoned Application

• Current Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Inventors: Florentin, Jean-Michel, Hebert, Anne-Sophie, Messere, Rino
• Application Number:
  US11/302,333
• Publication Number:
  US 20060159906A1
• Time in Patent Office: Days
• US Class Current: 428/304.400
• CPC Class Codes: A47F 3/0434 Glass or transparent panels
• CPC Class Codes: C03C 17/22 with other inorganic material C03C17/34, C03C17/44 take precedence
• CPC Class Codes: C03C 17/32 with synthetic or natural resins C03C17/30 takes precedence
• CPC Class Codes: F25D 2201/14 using subatmospheric pressure
• CPC Class Codes: F25D 23/02 Doors; Covers F25D23/08 takes precedence locks or fastenings E05B65/0042
• CPC Class Codes: Y10S 428/913 Material designed to be responsive to temperature, light, moisture
• CPC Class Codes: Y10T 428/249953 Composite having voids in a component [e.g., porous, cellular, etc.]
• CPC Class Codes: Y10T 428/26 Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• CPC Class Codes: Y10T 428/263 Coating layer not in excess of 5 mils thick or equivalent
• CPC Class Codes: Y10T 428/31504 Composite [nonstructural laminate]
• CPC Class Codes: Y10T 428/31551 Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
• CPC Class Codes: Y10T 428/31645 Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31855 Of addition polymer from unsaturated monomers

Abstract

The subject of the invention is a transparent glazing unit having at least one viewing area and its use in a door of a refrigerated enclosure and more particularly a glazed door, the glazed area of which essentially consists of a vacuum glazing unit. According to the invention the viewing area is combined with an antifrosting absorbent layer deposited on at least one surface of the said area.

Claims

1. A transparent glazing comprising at least one viewing area, wherein the viewing area is combined with an antifrosting absorbent layer deposited on at least one surface of said area.

2. The glazing according to claim 1, wherein the layer is deposited on the surface of the glazing.

3. The glazing according to claim 1, wherein the layer is deposited on a plastic film and said plastic film is fastened to the glazing.

4. The glazing according to claim 1, wherein the layer comprising of at least one hydrophilic polymer.

5. The glazing according to claim 4, wherein the hydrophilic polymer is crosslinked.

6. The glazing according to claim 4, wherein the hydrophilic polymer is a polymer or copolymer of vinylpyrrolidone.

7. The glazing according to claim 4, wherein the layer includes an organic or inorganic absorbent material.

8. The glazing according to claim 1, wherein the layer in the wet state has a porosity of between 0.1 and 1000 cm³/g.

9. The glazing according to claim 1, wherein the layer in the wet state has pores whose diameter is between 0.05 and 50 microns.

10. The glazing according to claim 1, wherein the antifrosting absorbent layer has a thickness of less than 100 microns.

11. The glazing according to claim 1, wherein the glazing is an insulating glazing unit comprising at least two glass sheets.

12. The glazing according to claim 11, wherein the glazing is a vacuum insulating glazing unit.

14. The glazing according to claim 18, wherein the antifrosting absorbent layer is deposited on the surface of the viewing area which is in contact with a refrigerated environment.

15. The glazing according to claim 7, wherein the inorganic absorbent material is porous.

16. The glazing according to claim 1, wherein the layer in the wet state has pores whose diameter is between 0.1 and 20 microns.

17. The glazing according to claim 1, wherein the layer in the wet state has pores whose diameter is between 1 and 15 microns.

18. A refrigerated door enclosure comprising the glazing according to claim 1.

13. (canceled)