Continuous multifilament sewing thread and process for making same
US4840021A · kind A · utility
9Cited by
9References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1988 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Feb 22, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02G3/367
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sewing thread, whose twist factor is between 100 and 150, consists essentially of a fixed high-tenacity multifilament core, sheathed with a cover of staple fibers, the unit being wrapped with a multifilament yarn. The process of spinning this sewing thread is performed on a spinning frame. The core yarn and the roving of staple fibers are brought to drawing rolls in the drawing plane, and wrapping yarn is brought to the drawing rolls in an offset manner relative to the spinning plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.