ISO/TC 38/SC 23/WG 6 - Fibres - Man-made

This document specifies the method and conditions of test for the determination of the breaking force and elongation at break of individual fibres in the conditioned or wet state. The determination of these fibre properties, when carried out on different kinds of testing equipment, will not generally give identical results. To avoid such differences, this document is restricted to the use of constant-rate-of-extension testing machine. It is applicable to all fibres, including crimped fibres, provided that the length of fibre available enables the gauge length specified in this document. NOTE For natural fibres (especially wool and cotton), the breaking test most commonly performed is that of bundles of fibres (see ISO 3060 and IWTO 32‑82).

This document specifies a method for determining the dye uptake of cationic dyeable modified polyester fibres by using cationic dye. It is applicable to cationic dyeable modified polyester fibres, including staple fibres and filament yarns. It is not applicable to polyester partially oriented yarns.

ISO 20754:2018 specifies methods for the determination of shape factors in the cross-section of man-made fibres.

ISO 17608:2015 specifies a method to determine the resistance of bare elastane yarns to chlorinated aqueous environments, such as swimming pools, through testing of the breaking force retention. Different alternative test conditions are specified. Three different concentrations and two different exposure hours are considered. ISO 17608:2015 is applicable to bare elastane yarns only. Result achieved from yarns cannot be used to predict the fabric performance.

ISO 18067:2015 specifies methods for the determination of dry-hot air shrinkage (after treatment) of synthetic filament yarns, skein method and single-end method. The skein method provides two forms of measurement which are of manual and automatic types. The single-end method gives the result by manual measurement. In case of dispute, manual measurement procedure is to be used. If these methods are not applicable, the corresponding test methods may be agreed between interested parties. ISO 18067:2015 is applicable to synthetic filament yarns of linear density less than 3 000 dtex. ISO 18067:2015 is not applicable to partially oriented yarns.

ISO 18066:2015 specifies a test method for the determination of the boiling water shrinkage of non-textured and textured multifilament yarns (made of polyester, polyamide, polypropylene, cellulose fibre, etc.) Only automatic method is specified in this International Standard. This International Standard is applicable to manmade filament yarns of linear density less than 3 000 dtex. This International Standard is not applicable to partially oriented yarns.