Process of making mixed filament yarn
US5223197A · kind A · utility
7Cited by
1References
16Claims
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 primaryD02J1/229
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process of making mixed filament yarns, involving 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 filaments of desired denier and thereby provides improved flexibility to obtain filaments and yarns mixed with nylon filaments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.