What is meant by “coated” abrasives and “bonded” abrasives?
Coated abrasives are used in production of abrasive papers and sanding discs that may have a variety of backing materials including paper, cloth and polyester film. The bonding material is a coating made of a synthetic resin bond (phenolic, alkyd or polyurethane resins). This holds the abrasive grit material to the backing material. Bonded abrasives are held together with glue like phenolic resins, and are used for grinding wheels and hard grinding discs and sharpening stones.
