Apparatus for stretching the individual strands of a bundle of fibers or threads

US4692106A · kind A · utility

Assignee

• REIFENHÄUSER GMBH & CO. KG MASCHINENFABRIK · DE

Inventors

• Robert Grabowski · Troisdorf, DE
• Walter Kramer · Rotkreuz, CH

Key dates

• Filing date: Jan 31, 1986
• Grant date: Sep 8, 1987
• Expiry date: Jan 31, 2006

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D01D5/14
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

The stretching machine comprises a spinning bar, a blowing compartment, and a stretching chamber. The spinning bar has a plurality of spinning nozzles, from which the individual fibers are put out or extruded in a thermoplastic condition. The blowing compartment is provided with blowing nozzles or orifices through which air is introduced as a cooling as well as stretching means. The stretching chamber has stretching chamber walls which can form an accelerating constriction having a venturi nozzle like shape as seen in vertical cross section. The stretching chamber walls comprise a deformable material, which permits a deformation of the stretching chamber walls during operation. A plurality of adjusting mechanisms for adjusting the shape of the stretching chamber walls are connected to and distributed at various heights over the stretching chamber walls.