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  • BSI
    BS ISO 16549:2021 Textiles. Unevenness of textile strands. Capacitance method
    Edition: 2021
    $313.97
    / user per year

Description of BS ISO 16549:2021 2021

This document describes a method, using capacitance measuring equipment, for determining the unevenness of linear density along the length of textile strands.

The method is applicable to tops, slivers, rovings, spun yarns and continuous filament yarns, made from either natural or man-made fibres, in the range of 4 tex (g/km) to 80 ktex (kg/km) for staple-fibre strands and 1 tex(g/km) to 600 tex (g/km) for continuous-filament yarns. It is not applicable to fancy yarns or to strands composed fully or partly of conductive materials such as metals; the latter requires an optical sensor (see A.4), and to raw silk filaments which are tested according to a specific standard.

The method describes the preparation of a variance-length curve, as well as the determination of periodicities of linear density. It also covers the counting of imperfections in the yarn, namely of neps and of thick and thin places.



Standard NumberBS ISO 16549:2021
TitleTextiles. Unevenness of textile strands. Capacitance method
StatusDefinitive
Publication Date2021-02-04
ReplacesBS ISO 16549:2004
Identical National Standard OfISO 16549
DescriptorsStaple fibre, Textiles, Natural fibres, Capacitance measurement, Yarn linear density determination, Filament (textile fibre), Textile testing, Textile fibres, Man-made fibres, Linear density, Yarn testing
ICS59.060.01 Textile fibres in general
CommitteeTCI/100
ISBN978 0 539 12176 6
PublisherBSI
Pages20

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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