Abrasive article with adhesion promoting layer

Abstract

An abrasive article includes a backing having first and second major surfaces, an abrasive layer overlying the first major surface, and a polymeric layer overlying the second major surface. The polymeric layer includes an elastomeric material having a Shore a durometer of about 55 to about 95.

What is claimed is: 
     
         1 . An abrasive article comprising:
 a backing film including first and second major surfaces;   an abrasive layer disposed over the first major surface;   an adhesion enhancement layer disposed over the second major surface; and   a polymeric layer disposed over the adhesion enhancement layer,   wherein the polymeric layer has a thickness of about 25 microns to about 75 microns and includes a thermoplastic elastomeric material having a Shore A durometer of about 55 to about 95 and a modulus of elasticity of about 0.005 GPa to about 0.5 GPa, and   wherein the adhesion enhancement layer comprises ethylene methyl acrylate copolymer, polyethylene imine, or a combination thereof.   
     
     
         2 . The abrasive article of  claim 1 , wherein the polymeric layer is free of surface structures. 
     
     
         3 . (canceled) 
     
     
         4 . The abrasive article of  claim 1 , wherein the Shore A durometer is about 75 to about 95. 
     
     
         5 .- 9 . (canceled) 
     
     
         10 . The abrasive article of  claim 1 , wherein the thermoplastic polymeric material is selected from the group consisting of thermoplastic polyurethane, thermoplastic elastomer polyolefin, thermoplastic vulcanate, and any combination thereof. 
     
     
         11 . The abrasive article of  claim 10 , wherein the thermoplastic elastomeric polyolefin is selected from the group consisting of polyethylene, polybutene, and any combination thereof. 
     
     
         12 . (canceled) 
     
     
         13 . The abrasive article of  claim 1 , wherein the backing film includes polyethylene terephthalate. 
     
     
         6 .- 15 . (canceled) 
     
     
         7 . The abrasive article of  claim 1 , wherein the polymeric layer is free of abrasive particulate. 
     
     
         8 . The abrasive article of  claim 1 , wherein the polymeric layer is free of filler. 
     
     
         9 . (canceled) 
     
     
         10 . The abrasive article of  claim 1 , wherein the adhesion enhancement layer comprises a combination of ethylene methyl acrylate copolymer and polyethylene imine. 
     
     
         11 . The abrasive article of  claim 1 , having a Total Cut Parameter of not greater than about 0.020 grams. 
     
     
         12 . (canceled) 
     
     
         13 . The abrasive article of  claim 1 , wherein the polymeric layer has a dry static coefficient of friction of at least 0.30. 
     
     
         14 . The abrasive article of  claim 13 , wherein the polymeric layer has a dry static coefficient of friction of at least 0.50. 
     
     
         15 . The abrasive article of claim  122 , wherein the polymeric layer has a dry dynamic coefficient of friction of at least 0.30. 
     
     
         25 . The abrasive article of claim  24 , wherein the polymeric layer has a dry dynamic coefficient of friction of at least 0.50. 
     
     
         26 .- 29 . (canceled) 
     
     
         30 . The abrasive article of  claim 10 , wherein the thermoplastic polymeric material comprises a thermoplastic polyurethane. 
     
     
         31 .- 44 . (canceled) 
     
     
         45 . A method of forming an abrasive article, the method comprising: providing a backing film having first and second major surfaces;
 disposing an adhesion enhancement layer on the second major surface of the backing film:   disposing a polymeric layer on the adhesion enhancement layer; and   disposing an abrasive layer on the first major surface of the backing film,   wherein the polymeric layer has a thickness of about 25 microns to about 75 microns and includes a thermoplastic elastomeric material having a Shore A durometer of about 55 to about 95 and a modulus of elasticity of about 0.005 GPa to about 0.5 GPa, and   wherein the adhesion enhancement layer comprises ethylene methyl acrylate copolymer polyethylene imine, or a combination thereof.   
     
     
         46 .- 50 . (canceled)