Boucle yarn and process for its preparation
US4244173A · kind A · utility
7Cited by
8References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 16, 1978 |
| Grant date | Jan 13, 1981 |
| Priority date | — |
| Expiry date | Oct 16, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S57/905
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A boucle yarn is prepared by relaxed heat treatment of a precursor yarn prepared by combination of a low shrinkage filament or yarn or monofil at the back of the front roller of a spinning frame with a roving of high shrinkage fibers followed by twisting to a twist multiplier of 1.5 to 4.0. The shrinkage differential between the high shrinkage fibers and the low shrinkage fibers must be at least 20%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.