| 摘要 |
Abrasive articles (10) and methods for their manufacture are described. The articles (10) are screen abrasive articles including a durable backing (12) member having a patterned array of portions thereon arranged around a plurality of openings (30) extending through the backing with the openings (30) comprising between about 20 % and about 80 % of the total area of the backing. A coating of abrasive material is adhesively affixed to the array of portions on the backing (12), forming abrasive surfaces arranged around the openings (30) to cooperatively function as a single abrasive surface while the openings (30) allow debris to pass through the article during abrasive applications. In at least one aspect of the invention, the portions of the backing (12) include a plurality of first surface portions and a plurality of second surface portions having surface areas greater than the surface areas of the first portions. |
