Process of making mixed shrinkage yarn
US5223198A · kind A · utility
8Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1991 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Nov 1, 2011 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02G3/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process of making mixed shrinkage yarn, including drawing, especially cold-drawing, or hot-drawing or other heat-treatments of spin-oriented crystalline polyester filaments, and particularly polyester feed yarns, that have been prepared by spinning at speeds of, e.g., 4 km/min, and have low shrinkage and no natural draw ratio in the conventional sense, that provides useful technique for obtaining uniform drawn filaments of desired denier and of differential shrinkage, and thereby provides improved flexibility to obtain filaments and yarns of mixed shrinkage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.