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US 10,377,018 B2Granted
Coarse sandpaper with non-slip coating layer
Assignee3M Innovative Properties Company
InventorsThomas E. Pahl, John G. Petersen, Michael P. Wald
Life of this patent
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Abstract
A sheet of coarse sandpaper includes a backing layer having opposed first and second major surfaces, an adhesive make coat on the second major surface, coarse abrasive particles at least partially embedded in the make coat, thereby defining a coarse abrasive surface, and an exposed non-slip coating layer on the first major surface. Methods of making and using such coarse sandpaper are also provided.
Claims15
A sheet of coarse 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) coarse abrasive particles at least partially embedded in the make coat, thereby defining a coarse abrasive surface;
- and
- (d) an exposed non-slip coating layer on the first major surface, wherein the nonslip coating layer comprises a base resin that comprises an amorphous hydrocarbon polymer or copolymer or a mixture thereof, and an effective amount of a tackifying resin, and wherein the non-slip coating layer has a thickness of at least about 20 microns and no greater than about 50 microns.
2 more elements
Dependencies are inferred from the claim text.