Thermal insulation elements

Abstract

The invention relates to thermal insulation elements comprising a) a covering layer having a thickness of from 0.2 to 1.0 mm, b) at least one vacuum insulation panel located on a), c) a further thermal insulation material, d) a further covering layer.

1 . A thermal insulation element, comprising:
 a) a covering layer having a thickness ranging from 0.2 to 1.0 mm,   b) at least one vacuum insulation panel located on a),   c) an additional thermal insulation material,   d) an additional covering layer.   
   
   
       2 . The thermal insulation element according to  claim 1 , wherein the covering layer a) comprises metal. 
   
   
       3 . The thermal insulation element according to  claim 1 , wherein the covering layer a) comprises a polymer. 
   
   
       4 . The thermal insulation element according to  claim 1 , wherein the vacuum insulation panel b) comprises a core of open-celled rigid polyurethane foam which is sheathed by a film, evacuated and closed. 
   
   
       5 . The thermal insulation element according to  claim 1 , wherein the vacuum insulation panel b) is fastened in an adhesive manner to the covering layer a). 
   
   
       6 . The thermal insulation element according to  claim 1 , wherein the vacuum insulation panel b) covers at least 60% of the area of the covering layer a). 
   
   
       7 . The thermal insulation element according to  claim 1 , wherein at least 70% of the area of the covering layer a) is covered by a vacuum insulation panel b). 
   
   
       8 . The thermal insulation element according to  claim 1 , wherein the additional insulation material is a polymer foam. 
   
   
       9 . The thermal insulation element according to  claim 1 , wherein the additional insulation material c) is a rigid polyurethane foam. 
   
   
       10 . The thermal insulation element according to  claim 1 , wherein the vacuum insulation panel b) comprises a core of foamed melamine-formaldehyde condensation product. 
   
   
       11 . The thermal insulation element according to  claim 1 , wherein the additional covering layer d) comprises a metal or a polymer. 
   
   
       12 . (canceled) 
   
   
       13 . A refrigeration appliance, comprising:
 a hollow space which is surrounded by sheet-like thermal insulation elements, wherein at least one of the sheet-like thermal insulation elements is the thermal insulation element according to  claim 1 .   
   
   
       14 . The refrigeration appliance according to  claim 13 , wherein the thermal insulation elements are arranged so that the covering layer a) forms the outer surface of the refrigeration appliance. 
   
   
       15 . A process for producing thermal insulation elements according to  claim 1 , which comprises:
 ai) fixing a vacuum insulation panel b) onto the covering layer a),   bi) fixing the covering layer d),   ci) introducing a liquid rigid polyurethane foam system into the hollow space formed in step bi),   di) curing the rigid polyurethane foam formed in step ci).   
   
   
       16 . A method of thermally insulating refrigeration appliances, comprising:
 incorporating the thermally insulating element according to  claim 1  as a door element or wall element in refrigeration appliances.