Method of producing a rotating air layer and false-twist air jet nozzle for practicing such method
US4934133A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1988 |
| Grant date | Jun 19, 1990 |
| Priority date | — |
| Expiry date | Dec 15, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H1/115
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
To improve the efficiency of a rotating air layer produced by an air injection nozzle and rotating in a substantially cylindrical space, the rotating air layer being intended to rotate a twisted fiber structure introduced through an inlet duct, there is provided a tube extension at the inlet duct. This tube extension forms a guide for the air flow injected tangentially and at an inclination by the air injection nozzle with respect to the direction of travel of the twisted fiber structure. As a result of this guide, the rotating air layer can form before it engages or contacts the twisted fiber structure. As a result there is increased the rotation of the engaged twisted fiber structure per unit length thereof, resulting in increased strength of the twisted fiber structure and the yarn ultimately produced therefrom with low air consumption.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.