Patent ID: 6752700
Filing Date: 2004-06-22
Classification: B24D

Abstract:
A flexible, continuous abrasive sheet disk comprising a flexible backing sheet with an annular band of spaced, shaped, raised abrasive island foundation structures where an inner annular band radius is greater than 30% of an outer annular band radius, the abrasive island foundation structures comprising islands of a first structural material having a raised island top surface and a raised island side wall or walls, the raised island top surface having at least a monolayer of abrasive particles supported in a polymeric resin, the height of all islands measured perpendicularly from the top surface of the raised island top surface to a proximal island structure where the side or sides intersect the backing is less than 1.5 mm, and a total thickness of the abrasive sheet at all island locations measured perpendicularly from the top surface of the at least monolayer of abrasive particles to a back-side surface of the backing sheet has a standard deviation in thickness of less than 80% of the average diameter of the abrasive particles.