Back to results
US 5,328,716 AGranted
Method of making a coated abrasive article containing a conductive backing
AssigneeMinnesota Mining and Manufacturing Company
InventorScott J. Buchanan
Life of this patent
Estimating the term…
Abstract
A method of making a coated abrasive article having an electrically conductive backing is taught, wherein electrically conductive material is incorporated into a coated abrasive backing. The coated abrasive article made by this method has a reduced tendency to accumulate static electric charge in the abrasive article during abrading of a workpiece.
Claims17
A method of making a coated abrasive article having a reduced tendency to accumulate static electric charge during the abrading of a workpiece, said method comprising the steps of:
- (a) providing a coated abrasive article comprising a backing having a front surface bearing an abrasive layer and a porous back surface;
- (b) impregnating said porous back surface so as to penetrate at least 0.005 mm into the thickness of said backing with an impregnating composition comprising a plurality of electrically conductive particles dispersed in a liquid vehicle to provide on removal of at least a portion of said liquid, a sufficient amount of said electrically conductive particles in said backing such that said coated abrasive article has a reduced tendency to accumulate static electric charge during said abrading, said impregnating composition being essentially free of binder adhesive;
- and
- (c) at least partially removing a sufficient amount of liquid to provide said coated abrasive article.
1 more element
Dependencies are inferred from the claim text.