Process for producing a high-strength, high-shrinkage polyamide 66 filament yarn
US6023824A · kind A · utility
2Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1997 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Nov 26, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2969
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for producing high strength, high shrinkage nylon 66 filament yarn for industrial fabrics formed as airbag fabrics, the process having the steps of drawing of a nylon 66 LOY filament yarn having a relative viscosity RV of at least 40 by at least three heatable draw roll units, winding the drawn yarn onto a cylindrical yarn support, and at a relaxation ratio of 4 to 10% setting a temperature of a last draw roll unit before winding to between 70.degree. C. and 160.degree. C., and setting a winding tension to less than 0.2 cN/tex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.