Arrangement for condensing a drafted fiber strand and method for making yarn therefrom
US6108873A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1999 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Mar 12, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H5/72
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A condensing zone is arranged downstream of the front roller pair of a drafting arrangement of a spinning machine, in which condensing zone a drafted roving or a sliver is condensed. The condensing zone has a suction device which has a closed hollow profile and which serves as a sliding surface for a circulating sieve belt. The sieve belt transports the drafted fiber strand to a nipping roller, which presses the fiber strand and the sieve belt against the sliding surface at a nipping point. The fiber strand travels over an essentially in transport direction extending suction slit located in the condensing zone, which suction slit extends to the nipping point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.