Device for condensing a drafted fiber strand
US6073314A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1999 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Jun 29, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H5/86
- 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 ready drafted fiber strand is condensed by means of rolling in the edge fibers before the yarn to be spun is imparted a twist. The condensing arrangement comprises a sliding surface having a suction slit extending essentially in a fiber strand transport direction, as well as a perforated transport belt which transports the fiber strand over the sliding surface and the suction slit. The sliding surface is the outer contour of a hollow profile, to which a suction device is connected. The transport belt consists of such a thin material that the fiber strand is disposed on the sliding surface and the suction slit at practically no distance thereto. The transport belt is preferably made from polyamide multifilament yarns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.