Patent ID: 7390244

Claim:
An abrasive article mounting assembly comprising: an abrasive attachment interface comprising a first surface, and a second surface opposite said first surface wherein said abrasive attachment interface is porous; a first filter media having a first surface and a second surface opposite said first surface, said first surface of said first filter media proximate said second surface of said abrasive attachment interface, said first filter media comprising a plurality of discrete channels formed by a plurality of channel sidewalls, said plurality of discrete channels extending from said first surface of said first filter media to said second surface of said first filter media, said first filter media having a height in the range of 1 to 20 millimeters; a second filter media having a first surface and a second surface opposite said first surface, said first surface of said second filter media proximate said second surface of said first filter media; and an assembly attachment layer proximate said second surface of said second filter media; wherein said abrasive attachment interface cooperates with said plurality of discrete channels to allow a flow of particles from said first surface of said abrasive attachment interface to said second filter media.