Abrasive tools and methods for forming same

Abstract

An abrasive tool having a bonded abrasive including a body having abrasive particles contained within a bond material and a barrier layer overlying a portion of the body and configured for removal by hand prior to use.

What is claimed is: 
     
         1 . An abrasive tool comprising:
 a bonded abrasive including a body comprising abrasive particles contained within a bond material; and   a barrier layer overlying a portion of the body and adhered to a major surface of the body in a peelable configuration having a peel strength of not greater than 3000 g/in.   
     
     
         2 . The abrasive tool of  claim 1 , wherein the barrier layer is configured for removal by hand prior to use. 
     
     
         3 . The abrasive tool of  claim 1 , further comprising an adhesive layer disposed between the major surface and the barrier layer, wherein the barrier layer is bonded to the major surface by the adhesive layer. 
     
     
         4 . The abrasive tool of  claim 3 , wherein the adhesive layer comprises a pressure-sensitive adhesive. 
     
     
         5 . The abrasive tool of  claim 3 , wherein the adhesive layer comprises a silicone based material. 
     
     
         6 . The abrasive tool of  claim 5 , wherein the adhesive layer forms a waterproof bond between the barrier layer and the major surface. 
     
     
         7 . The abrasive tool of  claim 1 , wherein the barrier layer comprises a metal-containing film. 
     
     
         8 . The abrasive tool of  claim 1 , wherein the barrier layer comprises metal foil. 
     
     
         9 . The abrasive tool of  claim 1 , wherein the barrier layer comprises a polymer-containing film. 
     
     
         10 . The abrasive tool of  claim 1 , wherein the barrier layer comprises a metalized film, an oxide-coated film, or a combination thereof. 
     
     
         11 . The abrasive tool of  claim 1 , wherein the barrier layer comprises from an inner surface to an outer surface, a first tie layer, a metal-containing film, a second tie layer, and a polymer-containing film. 
     
     
         12 . The abrasive tool of  claim 11 , wherein the polymer-containing film comprises polyester. 
     
     
         13 . The abrasive tool of  claim 11 , wherein the barrier layer further comprises a sealant layer. 
     
     
         14 . The abrasive tool of  claim 1 , wherein the major surface is a first major surface, and wherein the body comprises a second major surface opposite the first major surface and a peripheral edge extending between the first and second major surfaces, and wherein the barrier layer extends beyond the peripheral edge of the body. 
     
     
         15 . The abrasive tool of  claim 14 , further comprising another barrier layer bonded to the second major surface of the body, wherein the barrier layers are attached to one another enclosing the body and forming a seal rim. 
     
     
         16 . The abrasive tool of  claim 1 , further comprising a tab extending from the barrier layer in a sealed position and configured to be moved from the sealed position to an unsealed position and release at least a portion of the barrier layer from the portion of the body. 
     
     
         17 . An abrasive tool comprising:
 a bonded abrasive including a body comprising abrasive particles contained within a bond material;   a barrier layer bonded to a major surface of the body in a peelable configuration; and   an adhesive layer disposed between the barrier layer and the major surface,   wherein the adhesive layer forms a water-proof bond between the barrier layer and the major surface.   
     
     
         18 . The abrasive tool of  claim 17 , wherein the adhesive layer comprises a silicone based material. 
     
     
         19 . The abrasive tool of  claim 17 , wherein the barrier layer comprises a metal-containing film. 
     
     
         20 . The abrasive tool of  claim 17 , wherein the barrier layer comprises from an inner surface to an outer surface, a sealant layer, a metal-containing film, and a polymer-containing film.