ISO 16549:2021

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Textiles — Unevenness of textile strands — Capacitance method

Published By	Publication Date	Number of Pages
ISO	2021-01	18

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Categories: 59.060.01 - Textile fibres in general, ISO

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Description

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.

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	2021-01
Pages Count	18
Language	English
Edition	2
File Size	1.1 MB
ICS Codes	59.060.01 - Textile fibres in general

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ISO 16549:2021

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