PATTERNED COATED ABRASIVE FOR FINE SURFACE FINISHING

摘要

Coated abrasive material (10) for fine finishing applications including second fining ophthalmic application, having patterned surface coating of abrasive grains (20) dispersed in radiation-cured adhesive binder (22). The patterned surface coating is defined by a plurality of formations (28) of such abrasive/binder each having an inner bottom edge (30) defining an area devoid of coated abrasive, a top edge (34) defining a somewhat larger area devoid of coated abrasive and an inner wall (38) connecting the top and bottom edges.