Patent · US Expired

Method for producing an effect yarn on an open-end rotor spinning machine, and corresponding effect yarn

US7454889B2 · kind B2 · utility

0Cited by

4References

6Claims

0Family size

Assignee

Oerlikon Textile GmbH & Co. KG · DE

Inventors

Iris Biermann · Rheydt, DE
Wolfgang Doerner · Rheydt, DE
Christoph Haase · Asperhofen, AT
Lorenz Kreitzen · Rheinberg, DE
Ralf Siewert · Mönchengladbach, DE

Key dates

Filing date	Oct 13, 2004
Grant date	Nov 25, 2008
Priority date	—
Expiry date	Dec 21, 2024

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD02G3/34
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

A method for producing an effect yarn on an open-end rotor spinning machine, formed from an alternating line-up of yarn sections and effects consisting of pre-determined thickenings, wherein an effect is produced where the yarn is joined by means of a piecing end, in the piecing region of the yarn located downstream of the piecing end, following a break in the thread. The quality of the yarn produced in this way is improved such that unwanted deviations from the pre-determined repeat of pattern of the effect yarn, caused by piecing regions, are eliminated.

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