High speed process for making fully-oriented nylon yarns and yarns made thereby
US5981006A · kind A · utility
2Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Mar 11, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2969
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A coupled spin-draw process for making a fully-oriented nylon yarn including extruding molten nylon polymer with a selected RV through a spinneret and cooling to produce a yarn. The yarn is withdrawn from the quench zone with a feed roll rotating at a speed of at least 4500 mpm. The process further includes cold drawing followed by relaxing the yarn using a steam intermingling jet and then winding up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.