US 6,073,314 A · Device for condensing a drafted fiber strand

Abstract

A condensing zone is arranged downstream of the front roller pair of a drafting arrangement of a spinning machine, in which condensing zone a ready drafted fiber strand is condensed by means of rolling in the edge fibers before the yarn to be spun is imparted a twist. The condensing arrangement comprises a sliding surface having a suction slit extending essentially in a fiber strand transport direction, as well as a perforated transport belt which transports the fiber strand over the sliding surface and the suction slit. The sliding surface is the outer contour of a hollow profile, to which a suction device is connected. The transport belt consists of such a thin material that the fiber strand is disposed on the sliding surface and the suction slit at practically no distance thereto. The transport belt is preferably made from polyamide multifilament yarns.

Claims33

Dependent claims

An arrangement for condensing a drafted fiber strand in a condensing zone arranged downstream of a delivery roller pair of a drafting arrangement, which condensing zone comprises a sliding surface having a suction slit extending in essentially a fiber strand transport direction, and which condensing zone also comprises a perforated transport belt which transports the fiber strand over the sliding surface, wherein said transport belt includes a perforation pattern with plural perforations across the suction slit in a direction transverse to a travel direction of a fiber strand over the sliding surface and suction slit, and

wherein the transport belt consists of such a thin material that the fiber strand is disposed on the sliding surface at a minimal distance from the suction slit.

Dependencies are inferred from the claim text.

Device for condensing a drafted fiber strand

Life of this patent

Device for condensing a drafted fiber strand

Life of this patent

Abstract

Claims33