Patent ID: 6458017
Filing Date: 2002-10-01
Classification: B24B,C09G

Abstract:
A method for planarizing an outer surface of a material comprising:supplying a rotating wheel for mounting the material thereon: holding and mounting the material against the rotating wheel with the outer surface of the material facing upward; providing a liquid suspension, said liquid suspension comprising a liquid suspension medium of a specific liquid density and a plurality of solid abrasive particles of a substantially constant solid density, for planarizing the outer surface of the material; selecting the specific liquid density to be within 15% of the substantially constant solid density whereby at least a majority of the plurality of said solid abrasive particles are generally freely and stably suspended in the liquid suspension medium without gravitational settling and separation thereby minimizing damaging contact of the solid abrasive particles whereby the abrasive liquid suspension will have a much longer life limited only by its actual use in said planarizing process; causing the rotating wheel to rotate with the material mounted and held thereon; and applying a pressure to the mounted material to remove at least a portion of an outer surface thereof by a mechanical action of the solid abrasive particles on the rotating mounted material.