Polyester false-twist yarn and method of manufacturing the yarn

Details Polyester false-twist yarn and method of manufacturing the yarn Polyester false-twist yarn and method of manufacturing the yarn

2006-02-21

2006-02-21

Welch, Gary L. (Department: 3765)

Textiles: spinning, twisting, and twining

Strand structure

Multifilament yarns

Reexamination Certificate

active

07000375

ABSTRACT:
A polyester false-twist textured yarn, useful as a yarn for woven or knitted fabrics having excellent water-absorbing and quick drying properties, satisfies all of the requirements (1) to (3) shown below:(1) the cross-sectional profiles of a plurality of individual filaments, from which the false-twist textured multifilament yarn is constituted, each have 3 to 6 concavities, and the average number of the concavities having a ratio (H/W) of a largest depth (H) to a largest width (W) of the individual concavities of 0.3 or more is in the range of from 50 to 80% of the total number of the concavities;(2) the average of the cross-sectional profile flatness factors is in the range of from 1.5 to 3.5; and(3) the standard deviation of the cross-sectional profile flatness factors is in the range of from 0.3 to 1.0.

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