Method for the manufacture of elastic twisted yarns
US6467250B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2001 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Apr 18, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02G3/322
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for the manufacture of an elastic twisted yarn has at least one outer yarn wound or twisted around an expanded, elastic core yarn. In a first process step the outer yarn is wound around the core yarn with a winding speed providing less than the nominal twist of the finished twisted yarn. The thus formed intermediate yarn is wound up and then twisted in the same direction of rotation in a second process step. In the first process step the outer yarn is wound with the help of a double-pot spindle at a winding rate providing a twist of above 50% of the nominal twist without forming a balloon around the core yarn, and the second process step is carried out on a double-twist spindle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.