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

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.

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 cm 3 /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.  
     
     
         13 . (canceled)  
     
     
         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.