A coated abrasive backing consisting of an endless, seamless, loop is provided. The backing loop includes about 40-99% by weight of an organic polymeric binder, based upon the weight of the backing; and an effective amount of a fibrous reinforcing material engulfed within the organic polymeric binder...http://www.google.se/patents/US6066188?utm_source=gb-gplus-sharePatent US6066188 - Coated abrasive belt with an endless seamless backing and method of preparation
