Erodable agglomerates and abrasive products containing the same

Details Erodable agglomerates and abrasive products containing the same Erodable agglomerates and abrasive products containing the same

C - Chemistry, Metallurgy

09

K

57/12

C09K 3/14 (2006.01) B24D 3/32 (2006.01)

Patent

CA 1253348

Abstract This invention relates to erodable agglomerates containing abrasive grains and to abrasive products containing these agglomerates. Conventional coated abrasives typically consist of a single layer of abrasive grain adhered to a backing. It has been found that only up to about 15% of the grains in the layer are actually utilized in removing any of the workpiece. It follows then that about 85% of the grains in the layer are wasted. Furthermore, the backing, one of the more expensive components of the coated abrasive, must also be disposed of before the end of its useful life. This invention provides erodable agglomerates containing individual abrasive grains, a binder and matrix material selected from the group consisting of pulp suitable for making paper and derivatives thereof, wood flour, and vermiculite. The agglomerates are useful for coated abrasives and bonded abrasives. Abrasive products containing the agglomerates provide higher stock removal than abrasive products bearing a single layer of abrasive grains, since the erodable character of the agglomerates allows the sloughing off of spent individual abrasive grains during abrading operations and the exposing of new abrasive grains to the workpiece. The invention also provides a method of preparing the agglomerates of this invention.

509909

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