Abstract: A method of coextruding polymeric materials into multiple layers of desired thickness to form a tubular workpiece. The method includes conveying a first polymeric material through a main extruder and a second polymeric material through a coextruder. The second polymeric material has dispersed therein an amount of electrically conductive particles effective to impart electrical conductivity to the tubular workpiece. The method further includes simultaneously extruding the first polymeric material and the second polymeric material through a coextrusion die to form the tubular workpiece. The tubular workpiece is extruded in the form of one or more outer layers having the first polymeric material and one or more inner layers comprising the second polymeric material. A tubular workpiece prepared by the method of coextruding polymeric materials into multiple layers of desired thickness.

Abstract: A method of coextruding polymeric materials into multiple layers of desired thickness to form a tubular workpiece. The method includes conveying a first polymeric material through a main extruder and a second polymeric material through a coextruder. The second polymeric material has dispersed therein an amount of electrically conductive particles effective to impart electrical conductivity to the tubular workpiece. The method further includes simultaneously extruding the first polymeric material and the second polymeric material through a coextrusion die to form the tubular workpiece. The tubular workpiece is extruded in the form of one or more outer layers having the first polymeric material and one or more inner layers comprising the second polymeric material. A tubular workpiece prepared by the method of coextruding polymeric materials into multiple layers of desired thickness.

Abstract: Multi-link rear wheel axle for a vehicle connects a wheel support (4) to a vehicle body (5) with link arms in upper and lower link planes (8, 6). The upper link plane (8) has a link arm (18) configured as a track rod and front and rear transverse link arms (14, 18) with articulation points (13, 15) for the wheel support (4) and the vehicle body (5). A longitudinal link arm (16) connects the rear transverse link (14) via an articulation point (22) near the wheel support (4) to the front transverse link (18) via an articulation point (24) near the vehicle body. Front and rear transverse link arms (10, 12) in the lower link plane (6) have articulation points (13, 15) for the wheel support (4) and the vehicle body (5) and form a virtual pole (20) outside the lower link plane (6) and behind the axle.