High load bearing capacity nylon staple fiber and nylon blended yarns and fabrics made therefrom
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United States of America Patent
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Apr 14, 2020
Grant Date -
Nov 29, 2018
app pub date -
Apr 20, 2018
filing date -
Oct 10, 2008
priority date (Note) -
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Abstract
Disclosed is the preparation of improved high strength nylon staple fibers having a denier per filament of 1.0 to 3.0, a tenacity T at break of at least about 6.0, and a load-bearing capacity, T7, of greater than 3.2. Such nylon staple fibers are produced by preparing tows of relatively uniformly spun and quenched nylon filaments, drawing and annealing such tows via a two-stage drawing and annealing operation using relatively high draw ratios and then cutting or otherwise converting the drawn and annealed tows into the desired high strength nylon staple fibers.
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