| 摘要 |
A method of modifying abrasive stock (10), being an open porous lofty web of undulated filaments with a multitude of abrasive particles dispersed within the web and bonded to the filaments, is disclosed. The modified abrasive stock of the present invention gives a significantly improved surface finish while the service life of the modified abrasive article is not substantially changed compared to the known unfilled abrasive stock. These advantages are achieved by coating the abrasive stock with a partially foamed polyurethane polymer coating, infiltrated into the open web of the abrasive stock. The partially foamed polyurethane polymer coats the filaments of the web, partially but not completely filling the interstitial spaces of the web.
|
