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ISO 10132:1993(en)
Textiles ? Textured filament yarn ? Definitions
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Table of contents
Foreword
1 Scope
2 Terms and definitions
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Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
International Standard ISO 10132 was prepared by Technical Committee ISO/TC 38,Textiles, Sub-Committee SC 5, Yarn testing.

1   Scope

This International Standard establishes terms and definitions for characteristics of textured filament yarns.

2   Terms and definitions

2.1
bulk
The volume per unit mass of a yarn, determined under standardized conditions.
2.2
covering power
The degree to which an underlying object is concealed by a fabric. Covering power is an expression of the degree to which a yarn imparts cover to a fabric.
2.3
crimp
The waviness of a textured filament yarn. This characteristic may be expressed numerically by the crimp elongation.
2.4
crimp contraction
The contraction of a textured filament yarn resulting from the development of crimp, expressed as a percentage of its original length, with the lengths of the contracted and straightened yarns measured under specified tensions.
2.5
crimp elongation
The lengthening of a textured filament yarn when it is straightened after development of crimp, expressed as a percentage of its straightened length, with both lengths measured under specified tensions.
2.6
crimp frequency
The number of crimps per unit length of a textured filament yarn. Different methods are in common use for expressing crimp frequency, based on half or whole waves and on straightened or unstraightened length. These bases should therefore be specified in any quantification.
2.7
crimp liveliness
The tendency of a crimped filament yarn to develop its crimp immediately after reduction of an applied tension.
2.8
crimp recovery
The measure of a textured filament yarn's ability to recover its original crimped length after being subjected to tension.
2.9
crimp rigidity
The ability of a textured filament yarn to retain crimp after recovery from stretch; a measure of bulking potential of a yarn.
2.10
crimp stability
The ratio between crimp levels of a textured filament yarn before and after a standardized mechanical treatment.
2.11
latent crimp
Crimp that can be developed by thermal treatment or by tensioning and subsequent relaxation.
2.12
percentage crimp
The difference between the straightened and crimped lengths of a textured filament yarn, expressed as a percentage of the straightened length, these lengths being measured under specified tension.
2.13
shrinkage
The decrease in length of a textured filament yarn caused by a specified treatment, expressed as a percentage of the length of the untreated sample, with the lengths before, during and after treatment measured under specified tensions.
2.14
twist liveliness
The tendency for a torsion-textured filament yarn to resume its twisted shape.