Structured abrasive article

Details Structured abrasive article Structured abrasive article

B - Operations, Transporting

24

D

B24D 3/00 (2006.01) B24D 3/28 (2006.01) B24D 11/00 (2006.01)

Patent

CA 2100059

Two major concerns associated with abrasive articles, particularly in fine grade articles, are loading and product consisten- cy. Loading is a problem caused by the filling of the spaces between abrasive grains with swarf, and the subsequent build-up of that material. If the abrasive article is made via a conventional process. the adhesive or binder system can flow before or during curing, thereby adversely affecting product consistency. This invention provides a coated abrasive article. The abrasive compo- sites have a predetermined shape, e.g., pyramidal. The dimensions of a given shape can be made substantially uniform. Further- more, the composites are disposed in a predetermined array. The coated abrasive article can be prepared by a method comprising the steps of: (1) introducing a slurry containing a mixture of a binder and a plurality of abrasive grains onto a production tool; (2) introducing a backing to the outer surface of the production tool such that the slurry wets one major surface of the backing to form an intermediate article; (3) at least partially curing or gelling the binder before the intermediate article departs from the ou- ter surface of the production tool to form a coated abrasive article; and (4) removing said coated abrasive article from the produc- tion tool.

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