Method and apparatus for producing slub yarn
US4837903A · kind A · utility
1Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1985 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Jan 30, 2005 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02J1/08
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and an apparatus for producing a slub yarn from a filament yarn, in which the starting yarn is propelled by an air stream at a first rate and made to impinge on a liquid (water) surface, whereby the yarn is opened to individual single filaments which entangle and fold with each other to form a thicker portion in the yarn body, while being held in a slack condition in the water and finally withdrawn therefrom at a second rate lower than the first rate. The water is preferably whirled to form a vortex. Interlacing of the yarn after withdrawal from the water is also preferable to strengthen the yarn structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.