Patent ID: 8181791
Filing Date: 2012-05-22
Classification: D21D

Abstract:
1. A rotor element for use with a rotor of a screening apparatus of the pulp and paper industry, said rotor element comprising: two longitudinal edges, a leading edge and a trailing edge, wherein the leading edge forms an acute angle α with a surface of the rotor or a lower surface of said rotor element and wherein the trailing edge forms an acute angle β with the surface of the rotor or the lower surface of said rotor element; two opposite axial ends, a first axial end and a second axial end; a surface arranged between said leading edge and said trailing edge, said surface divided by a borderline into a leading surface extending from said leading edge to said borderline and a trailing surface extending from said trailing edge to said borderline; and a distance (W 1 ) between said borderline and said leading edge; wherein said distance (W 1 ) varies between the first axial end and the second axial end of the rotor element.