BS ISO 10290:2018 pdf download

BS ISO 10290:2018 pdf download.Textiles — Cotton yarns — Basis for specification
1 Scope
This document specifies criteria, with relevant test methods, to be applied in describing single spun grey cotton yarns. These yarns are widely used in international trade.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2, Textiles — Designation of the direction of twist in yarns and related products
ISO 2060, Textiles — Yarn from packages — Determination of linear density (mass per unit length) by the skein method
ISO 2061, Textiles — Determination of twist in yarns — Direct counting method
ISO 2062, Textiles — Yarns from packages — Determination of single-end breaking force and elongation at break using constant rate of extension (CRE) tester
ISO 3951-4, Sampling procedures for inspection by variables — Part 4: Procedures for assessment of declared quality levels
ISO 6741-1, Textiles — Fibres and yarns — Determination of commercial mass of consignments — Part 1:Mass determination and calculations
ISO 6939, Textiles — Yarns from packages — Method of test for breaking strength of yarn by the skein method
ISO 16549, Textiles — Unevenness of textile strands — Capacitance method
ISO 17202, Textiles — Determination of twist in single spun yarns — Untwist/retwist method
ASTM D2255, Standard test method for grading spun yarns for appearance
ASTM D5647, Standard guide for measuring hairiness of yarns by the photo-electric apparatus
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1 linear density
mass per unit length of a yarn
Note 1 to entry: It is expressed in tex or multiples or sub-multiples thereof (see ISO 1144).
[SOURCE: ISO 1139:1973, 3.7]
3.2 tex
number of grams per kilometre of yarn
Note 1 to entry: The tex system is described in ISO 1144.
3.3 breaking load
maximum load (or force) applied to a specimen in a tensile test carried to rupture
Note 1 to entry: For yarns, it is preferably expressed in centinewton.
[SOURCE: ISO 3060:1974, 3.2, modified — Note 1 to entry has been added]
3.4 elongation at break
increase in length of a specimen produced by the breaking load (3.3)
Note 1 to entry: It is usually expressed as a percentage of the original nominal length.
3.5 tenacity
tensile force per unit of linear density (3.1) of the unstrained specimen
Note 1 to entry: It is preferably expressed in centinewtons per tex.
[SOURCE: ISO 3060:1974, 3.4]
3.6 breaking tenacity
tenacity (3.5) corresponding to the breaking load (3.3)
Note 1 to entry: For specimens of known linear density, the breaking tenacity can be obtained directly from tensile testing machines which can be suitable adjusted to indicate tenacity instead of breaking load.
[SOURCE: ISO 3060:1974, 3.4, modified — Note 1 to entry has been added]