| 摘要 |
<p>2126218 9312912 PCTABS00024 The present invention provides a backing for a coated abrasive article. The backing of the invention addresses problems of previously known backings for coated abrasives. The backings used previously are typically made of paper, cloth, vulcanized fiber, or combination thereof. Many of these materials do not exhibit sufficient strength, flexibility, impact resistance, and resistance to humidity extremes. High humidity, in particular, may cause premature curling of these backings, rendering the coated abrasive disc inoperable. The backing of the present invention includes a tough, heat resistant, thermoplastic binder material, and an effective amount of a fibrous reinforcing material distributed throughout the thermoplastic binder material. The tough, heat resistant, thermoplastic binder material and the fibrous reinforcing material together form a hardened composition that will not substantilly deform or disintegrate during use.</p> |
