Cooking appliance door with an inner borosilicate glass window pane and cooking appliance with said door

Abstract

The cooking appliance door has a borosilicate glass inner window pane, on which a paint layer and an infrared-reflecting layer are applied. The paint layer is high-temperature-resistant non-enamel paint with an organic or inorganic binder. In order to provide especially good adherence and high scratch resistance for the paint layer, the paint layer is applied directly on one side of the inner window pane and the infrared-reflecting layer is applied on and over this paint layer. A cooking appliance with this cooking appliance door is also part of this invention.

1 . A cooking appliance door comprising an inner window pane ( 1 ), said inner window pane comprising borosilicate glass; 
 at least one paint layer ( 2 ) applied directly to a surface on one side of said inner window pane, wherein said at least one paint layer ( 2 ) comprises a high-temperature-resistant non-enamel paint with an organic or inorganic binder; and    at least one infrared-reflecting layer ( 3 ) applied on said at least one paint layer ( 2 ) on said one side of the inner window pane.    
   
   
       2 . The cooking appliance as defined in  claim 1 , wherein said at least one paint layer ( 2 ) has a thickness of from 10 to 15 μm.  
   
   
       3 . The cooking appliance as defined in  claim 1  or  2 , wherein said at least one paint layer ( 2 ) is printed on the inner window pane ( 1 ).  
   
   
       4 . The cooking appliance as defined in  claim 1 , wherein said at least one infrared-reflecting layer ( 3 ) contains tin oxide.  
   
   
       5 . The cooking appliance as defined in  claim 1  or  4 , wherein said at least one infrared-reflecting layer ( 3 ) is applied to the at least one paint layer ( 2 ) by a hot spraying process.  
   
   
       6 . A cooking appliance ( 10 ) comprising a cooking compartment ( 30 ) with an opening for placing cooking materials in the cooking compartment ( 30 ) and a cooking appliance door ( 20 ) for closing said opening; 
 wherein said cooking appliance door ( 20 ) comprises an inner window pane ( 1 ) made of a borosilicate glass, at least one paint layer ( 2 ) applied directly to a surface on one side of said inner window pane, said at least one paint layer ( 2 ) comprising a high-temperature-resistant non-enamel paint with an organic or inorganic binder and at least one infrared-reflecting layer ( 3 ) applied on said at least one paint layer ( 2 ) on said one side of the inner window pane.    
   
   
       7 . The cooking appliance as defined in  claim 6 , wherein said at least one paint layer ( 2 ) has a thickness of from 10 to 15 μm.  
   
   
       8 . The cooking appliance as defined in  claim 6 , wherein said at least one infrared-reflecting layer ( 3 ) contains tin oxide.