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BS ISO 16549:2021

Current

Current

The latest, up-to-date edition.

Textiles. Unevenness of textile strands. Capacitance method

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

04-02-2021

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 4tex(g/km) to 80ktex(kg/km) for staple-fibre strands and 1tex(g/km) to 600tex(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.

Committee
TCI/100
DocumentType
Standard
Pages
20
PublisherName
British Standards Institution
Status
Current
Supersedes

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