Patent · US Expired

Method for open-end rotor spinning

US6722118B2 · kind B2 · utility

0Cited by

6References

9Claims

0Family size

Assignee

W. Schlafhorst AG & Co. · DE

Inventors

Jurgen Meyer · Aschaffenburg, DE
Manfred Lassmann · Nettetal, DE

Key dates

Filing date	Jun 21, 2002
Grant date	Apr 20, 2004
Priority date	—
Expiry date	Oct 3, 2022

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01H4/50
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

It is the object of the invention to propose a method for open-end rotor spinning, wherein the formation of cover yarn, in particular the so-called “belly bands”, is at least appreciably reduced.In accordance with the invention, the fiber flow exiting a fiber guide channel has a directional component in the direction of rotation of the rotor, while the yarn leg (3) extending, from the draw-off nozzle to the rotor groove, is curved opposite the direction of rotation of the rotor, at least near the rotor groove (1), during the spinning process. The creation of this direction of curvature of the yarn leg (3) takes place during the piecing process.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.