Method and apparatus for the production of a yarn by open-end friction spinning
US4628679A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1985 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Sep 9, 2005 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H4/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and an apparatus for production of yarn by friction spinning is disclosed. The friction spinning method employs a perforated friction spinning drum towards which a fibre feed passage projects. An opening roller, known from the open-end rotor spinning process, feeds separated fibres into the fibre feed passage, which fibres are taken up by a transport air flow in the fibre feed passage. This transport air flow is produced by the perforated friction spinning drum which is subjected to underpressure. Fibres leaving an opening of the fibre feed passage are laid in an inclined disposition on the perforated friction spinning drum and transported in this disposition towards a yarn end forming at a yarn formation position. The spun yarn is withdrawn by a withdrawal roller pair. Advantageously, a second friction spinning drum is provided parallel to the first perforated friction spinning drum to cause the fibre twisting-in process to take place in a more accurately defined manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.