Ring spinning method and a yarn made thereby
US5724800A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1996 |
| Grant date | Mar 10, 1998 |
| Priority date | — |
| Expiry date | Nov 19, 2016 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H5/72
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The ring spinning method drafts a sliver in a multi-stage drafting system where the sliver acquires a total draft in a range of from 60 to 150-fold. Following outlet from the last nip of the drafting system, the drafted sliver is conveyed without drafting over a guide path in which the fiber band is condensed to form a compact fiber strand of not more than 2.5 millimeters width and preferably less than 1 millimeter in width. At the end of the guide path, the fiber strand passes through a twist inhibiting nip between two rollers and is then passed by twist distribution to a ring spinning device. The yarn produced possesses a quality with respect to hairiness and neps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.