ABRASIVE ARTICLE HAVING A COLORED SUBSTRATE

摘要

An abrasive article (10) including a colorant (16) applied to the substrate (11) which is visible through the abrasive medium (17) and which denotes the grade of the abrasive medium. The colorant (16) can be applied to the front side (14) of the substrate (11), and the abrasive medium (17) includes a make coat (18), size coat (20) and abrasive particles (22) which are light transmissive when applied to the substrate (11) over the colorant (16) such that the colorant (16) is visible through the abrasive medium (17). A method of making an abrasive article (10) having a colorant (16) applied to the substate (11) and visible through the abrasive medium (17) is also disclosed as is a system for identifying the grade of the abrasive article (10).