Abstract: Coated abrasive materials can be made from a substrate and, adhered to the substrate by a maker coat, weak shaped abrasive grits with, interspersed between the abrasive grits, a plurality of non-abrasive particles that are smaller than the abrasive grits which serve to raise the level of a size coat applied over the maker coat and abrasive grits such that the abrasive grits are anchored over a greater part of their length without the need for the application of a large volume of size coat and such that a grinding adjuvant included in the topmost coat is located adjacent the tips of the abrasive grits which perform the grinding when the coated abrasive is in use.

Abstract: Coated abrasive materials can be made from a backing material with abrasive particles adhered to the backing through an orienting layer in the form of a mesh of a size and dimensions to ensure that the orientation of the grits substantially perpendicular to the coating material is maintained.

Abstract: Composite abrasive wheels having shaped abrasive grits bonded to a fibrous substrate are more effective than their counterparts with irregularly shaped grain, especially at finer grit sizes.

Abstract: Coated abrasive materials can be made from a backing material and abrasive elements which comprise abrasive particles adhered to a rigid base material, said elements being rigidly adhered to the backing material in a predetermined pattern.