| abstract |
An industrial cleaning sponge includes an industrial sponge roller device having a cylindrical body of polyvinyl acetal material and a plurality of projections, formed of the polyvinyl acetal material, extending from an outer surface of the cylindrical body. The projections have a truncated conical shape with each projection including a circular base coupled to the outer surface of the cylindrical body, a circular, planar top surface and a side wall extending outwardly from the top surface to the base. |