Patent ID: 6162322
Filing Date: 2000-12-19
Classification: B24D,B29C,B29K,B29L,D04H,Y10T

Abstract:
A method for reinforcing a thin abrasive wheel with a non-woven fiber reinforcement disc, comprising the steps:a) drawing a first set of parallel fibers gripped by a plurality of support means across a support platform having a circular perimeter to create a first array of discontinuous fibers in parallel positions having a circular periphery, each fiber being drawn a sufficient distance to intersect an initial point and a terminal point along the circular perimeter of the support platform;b) cutting the fibers at the points of intersection along the circular perimeter of the support platform while maintaining the parallel positions of the first array of discontinuous fibers;c) drawing a second set of parallel fibers gripped by a plurality of support means in a direction approximately perpendicular to the first array of discontinuous fibers to create a second array of discontinuous fibers in parallel positions having a circular periphery, each fiber being drawn a sufficient distance to intersect an initial point and a terminal point along the circular perimeter of the support platform;d) cutting the fibers at the points of intersection along the circular perimeter of the support platform while maintaining the parallel positions of the second array of discontinuous fibers;e) adhering the first array of discontinuous fibers to the second array of discontinuous fibers to form a reinforcement disc comprising a uniform non-woven fiber array having a circular periphery;f) removing the reinforcement disc from the plurality of support means and the support platform;g) adding at least one layer of a mixture of abrasive grain and organic bond components to at least one reinforcement disc to form a uniform laminate;h) molding the uniform laminate under pressure to form a non-woven fiber reinforced thin abrasive wheel; andi) curing the non-woven fiber reinforced thin abrasive wheel.