Patent ID: 6336259
Filing Date: 2002-01-08
Classification: D01H

Abstract:
An apparatus for condensing a drafted fiber strand in a condensing zone arranged downstream of a front roller pair of a drafting unit, which condensing zone comprises a stationary sliding surface having a suction slit extending essentially in transport direction of the fiber strand, and a perforated transport belt which transports the fiber strand over the sliding surface, on which transport belt a nipping roller, bordering an exit side of the condensing zone, is disposed,wherein said nipping roller is in driving engagement with the transport belt, wherein a friction roller is provided which is in driving engagement with the nipping roller, wherein a loading spring is provided for pressing the friction roller onto the nipping roller as well as onto a roller of the front roller pair, and wherein the nipping roller has at least two areas of differing diameters, of which one area is provided for the drive by the friction roller and the at least one other area is provided for a tension draft which acts on the fiber strand.