Abstract: A coated abrasive belt backing material woven from 100% high tenacity polyester staple yarns in a sateen weave is heat set and destretched to a dimensional stability warpwise of less than 6.5% elongation at 170 pounds per linear inch of width tensile, while maintaining its desired width during such heat setting and destretching, cloth finished, coated with maker, abrasive and size, cured and product finished to form endless belts having superior properties of strength, toughness, body retention, pliability and base adhesion.

Abstract: A process for making cloth backing for coated abrasive articles is disclosed wherein a backing material is coated on its front side, with a liquid thermosetting resin, in such a manner that the resin does not permeate the interstices of the cloth. As a result, the cloth retains most of its original pliability when incorporated in the finished coated abrasive article. A back sizing, of for example glue, may also be applied in the same manner to provide a coated abrasive backing material which is both front sized and back sized but which still possesses most of its original pliability.