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US 7,244,170 B2Granted
Abrasive article and methods of making same
Assignee3M Innovative Properties Company
InventorsEdward J. Woo, Thomas W. Rambosek, Rufus C. Sanders, Jr., Ehrich J. Braunschweig, Seyed A. Angadjivand, Suresh Kalatoor, Curtis J. Schmidt, Charles R. Wald, Donna W. Bange
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Abstract
An abrasive article with an integral dust collection system. The abrasive article comprises a porous abrasive layer with openings, a first filter media with channels, a second filter media, and an attachment interface layer. The openings of the porous abrasive layer cooperate with the channels to allow the flow of particles from the abrasive surface to the second filter media.
Claims31
An abrasive article comprising:
- a porous abrasive layer having an abrasive surface, said porous abrasive layer comprising a substrate having a first surface, a second surface opposite said first surface, a plurality of abrasive particles affixed to said first surface with at least one binder, and a plurality of openings extending from said abrasive surface to said second surface of said porous abrasive layer;
- 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 porous abrasive layer, said first filter media comprising a plurality of discrete channels formed by a plurality of channel sidewalls, said 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 attachment interface layer proximate said second surface of said second filter media;
- wherein said openings cooperate with said channels to allow the flow of particles from said abrasive surface to said second filter media.
3 more elements
An abrasive disk comprising:
- an abrasive layer having an abrasive surface, said abrasive layer comprising a substrate having a first surface, a second surface opposite said first surface, a plurality of abrasive particles affixed to said first surface with at least one binder, and a plurality of apertures extending from said abrasive surface to said second surface of said abrasive layer;
- a first filter media having a first surface and a second surface opposite said first surface, said first surface of said first filter media affixed to said second surface of said porous abrasive layer, said first filter media comprising a plurality of channels formed by a plurality of polymer films configured as a stack and affixed to one another, said channels extending from said first surface of said first filter media to said second surface of said first filter media;
- 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 attachment interface layer proximate said second surface of said second filter media;
- wherein said openings cooperate with said channels to allow the flow of particles from said abrasive surface to said second filter media.
3 more elements
A method of making an abrasive article comprising:
- providing a porous coated abrasive article having an abrasive surface and a backside;
- providing a first filter media comprising a plurality of channels formed by a plurality of polymer films configured as a stack and affixed to one another, said channels extending from said first surface of said first filter media to said second surface of said first filter media;
- affixing said first filter media to said backside of said porous coated abrasive article;
- affixing a second filter media to said first filter media;
- and
- affixing an attachment interface layer proximate said second filter media.
3 more elements
Dependencies are inferred from the claim text.