Conversion pad with moisture barrier

Abstract

A conversion pad for attaching an abrasive article to a sanding tool includes a supporting layer comprising a backing material and a moisture barrier arranged on at least a portion of the supporting layer, thereby to protect the backing material from moisture, and a layer of attachment material affixed to the supporting layer for attaching the abrasive article to the conversion pad.

1 . A conversion pad for attaching an abrasive article to a sanding tool, comprising: 
 (a) a supporting layer comprising a backing material and a moisture barrier arranged on at least a portion of said backing material, thereby to protect said backing material from moisture; and    (b) a layer of attachment material affixed to said supporting layer for attaching the abrasive article to the conversion pad.    
   
   
       2 . A conversion pad as defined in  claim 1 , wherein said backing material is interposed between a pair of moisture barrier layers.  
   
   
       3 . A conversion pad as defined in  claim 1 , wherein said layer of backing material comprises vulcanized fiber board.  
   
   
       4 . A conversion pad as defined in  claim 1 , wherein said moisture barrier comprises at least one of polyurethane, wax, epoxy, polypropylene, polyethylene terephthalate, polyvinyl butyral, polyethylene, latex, acrylic, enamel, and tar.  
   
   
       5 . A conversion pad as defined in  claim 1 , wherein said layer of attachment material comprises a layer of hook-type fasteners.  
   
   
       6 . A conversion pad as defined in  claim 5 , wherein said layer of hook-type fasteners is affixed to said backing material with a heat resistant hot melt adhesive.  
   
   
       7 . A conversion pad comprising a supporting layer and a layer of attachment material arranged on said supporting layer, wherein said supporting layer comprises a backing comprising vulcanized fiber board.  
   
   
       8 . A conversion pad as defined in  claim 7 , wherein said supporting layer further comprises a moisture barrier arranged on at least a portion of said backing, thereby to protect said backing material from moisture  
   
   
       9 . A conversion pad as defined in  claim 8 , wherein said supporting layer is adhesively bonded with said attachment material with a heat resistant nylon hot melt adhesive.  
   
   
       10 . A conversion pad as defined in  claim 9 , wherein said supporting layer comprises a layer of backing material interposed between a pair of moisture-proof barrier layers, thereby to protect the backing from moisture.  
   
   
       11 . A conversion pad as defined in  claim 10 , wherein said moisture-proof barrier layers comprise at least one of polyurethane, wax, epoxy, polypropylene, polyethylene terephthalate, polyvinyl butyral, polyethylene, latex, acrylic, enamel, and tar.