Aramid monofilament and method of obtaining same
US5246776A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1991 |
| Grant date | Sep 21, 1993 |
| Priority date | — |
| Expiry date | Feb 26, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2929
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An aramid monofilament (20), characterized by the fact that it has the following relationships: 1.7.ltoreq.Ti.ltoreq.260; 40.ltoreq.D.ltoreq.480; T.gtoreq.170-D/3; Mi.gtoreq.2000, Ti being the linear density in tex, D being the diameter in .mu.m, T being the tenacity in cN/tex, and Mi being the initial modulus in cN/tex for this monofilament. A method of obtaining said monofilament (20) in which a solution (2) of aromatic polyamide(s) is extruded in a spinneret (9), the jet is drawn into a non-coagulating layer of fluid (13), and the drawn liquid vein is introduced into a coagulating medium (19). Assemblies of such monofilaments. Articles reinforced by these monofilaments or these assemblies, such articles being for instance tires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.