Sandpaper with non-slip layer
Assignee3M Innovative Properties Company
InventorsThomas E. Pahl, John G. Petersen, Michael P. Wald
Life of this patent
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Abstract
The present invention provides an abrasive article, e.g. a sheet of sandpaper, comprising a backing layer having opposed first and second major surfaces, an adhesive make coat on the second major surface, abrasive particles at least partially embedded in the make coat, thereby defining an abrasive surface, and an exposed non-slip coating layer on the first major surface, the non-slip coating layer comprising at least a base resin and a tackifying resin.
Claims18
A sheet of sandpaper, comprising:
- (a) a flexible backing layer having opposed first and second major surfaces;
- (b) an adhesive make coat on the second major surface;
- (c) abrasive particles at least partially embedded in the make coat, thereby defining an abrasive surface;
- and
- (d) an exposed non-slip coating layer on the first major surface, wherein the nonslip coating layer comprises an amorphous base resin and an effective amount of a tackifying resin.
A sheet of sandpaper for hand sanding a work surface, comprising:
- (a) a paper backing layer having opposed first and second major surfaces;
- (b) an adhesive make coat on the backing layer second major surface;
- (c) abrasive particles at least partially embedded in the adhesive make coat, thereby defining an abrasive surface;
- and
- (d) an exposed non-slip coating layer on the backing layer first major surface, wherein the non-slip coating layer is a hot-melt coating layer comprising an amorphous base resin and a tackifying resin, the non-slip coating layer comprising a thickness of no greater than about 50 microns and wherein the entirety of the outer surface of the non-slip coating layer is a generally planar surface.
A method of making a sheet of sandpaper having a non-slip coating layer, comprising the steps of:
- (a) providing a paper backing layer having opposed first and second major surfaces;
- (b) coating an adhesive make coat on the second major surface;
- (c) at least partially embedding abrasive particles in the make coat, thereby forming an abrasive surface;
- and
- (d) hot-melt coating a non-slip coating layer comprising at least one amorphous base resin and at least one tackifying resin on the first major surface.
Dependencies are inferred from the claim text.