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  • BSI
    20/30406530 DC BS ISO 16549. Textiles. Unevenness of textile strands. Capacitance method
    Edition: 2020
    $44.66
    / user per year

Description of 20/30406530 DC 2020

This International Standard 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 require an optical sensor (see A.4).

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

Irregularities in the distribution of additives such as sizes, in moisture content and in fibre blending may increase the measured unevenness above its true value.



Standard Number20/30406530 DC
TitleBS ISO 16549. Textiles. Unevenness of textile strands. Capacitance method
StatusDefinitive
Publication Date2020-04-23
Identical National Standard OfISO/DIS 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/24
PublisherBSI
Pages18

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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