Spunlike yarns
AssigneeE. I. Du Pont de Nemours and Company
InventorLun-Yan Wei
Life of this patent
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Abstract
Spunlike yarns having free ends are made from continuous filament yarn by fluid-jet texturing. The fibrous elements that make up the yarn have irregular and varying cross-sectional shapes, said fibrous elements being forked and merged in a fortuitous manner. The spunlike yarns may also contain fibrous elements that extend substantially continuously throughout the length of the yarn.
Claims8
A yarn consisting essentially of a plurality of synthetic fibrous elements having an irregular and varying cross section and being forked and merged in a fortuitous manner, the cross-sectional area and cross-sectional shape of each fibrous element changing along its length and some of said fibrous elements terminating in free ends, the cross-sectional area and cross-sectional shape of most of said fibrous elements being of approximately the same cross-sectional area and cross-sectional shape as those fibrous elements that terminate in free ends, and those fibrous elements that do not have approximately said area and said shape being forked to form fibrous elements of approximately said area and said shape, many of said fibrous elements having at least one ragged side that extends longitudinally of the fibrous elements, the fibrous elements being frequently entangled along the length of the yarn, said yarn having 10 to 150 free ends per centimeter of yarn length.
Dependencies are inferred from the claim text.