1、INTERNATIONAL STANDARD IS0 10290 First edition 1993-l I-01 Textiles - Cotton yarns - Specifications Textiles - Fils de coton - Spkcifica tions Reference number IS0 10290:1993(E) IS0 10290:1993(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national
2、standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 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
3、 organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees
4、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 IS0 10290 was prepared by Technical Committee lSO/TC 38, Textiles, Sub-Committee SC 22, Product specifications. Anne
5、xes A and B of this International Standard are for information only. 0 IS0 1993 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without per- mission in writing from the publish
6、er. International Organization for Standardization Case Postale 56 l U-l-1 211 Geneve 20 l Switzerland Printed in Switzerland INTERNATIONAL STANDARD IS0 10290:1993(E) Textiles - Cotton yarns - Specifications 1 Scope This International Standard specifies criteria, with rel- evant test methods, to be
7、applied in describing single spun grey cotton yarns, which are widely used in international trade. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions
8、 indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most re- cent editions of the standards indicated below. Members of IEC and IS0 maintain registers of cur- rently
9、 valid International Standards. IS0 2: 1973, Textiles - Designation of the direction of twist in yarns and related products. IS0 1144: 1973, Textiles - Universal system for des- igna ting linear density (Tex Sys tern). IS0 2060:1972, Textiles - Yarn from packages - Determination of linear density (m
10、ass per unit length) - Skein method. IS0 2061:1972, Textiles - Determination of twist in yarns - Direct counting method. IS0 2062:1993, Textiles - Yarns from packages - Determination of single-end breaking force and elon- gation at break. IS0 3951 :I 989, Sampling procedures and charts for inspectio
11、n by variables for percent nonconforming. IS0 6741-I :1989, Textiles - Fibres and yarns - De- termination of commercial mass of consignments - Part 1: Mass determination and calculations. IS0 6939:1988, Textiles - Yarns from packages - Method of test for breaking strength of yarn by the skein method
12、. 3 Definitions For the purposes of this International Standard, the following definitions apply. 3.1 linear density: Mass per unit length of a yarn. It is expressed in tex. 3.2 tex: Number of grams per 3.3 breaking load: Maximum I kilometre of yarn. oad (or force) applied to a specimen in a tensile
13、 test carried to rupture. For yarns, it is preferably expressed in centinewtons. 3.4 elongation at break: Increase in length of a specimen produced by the breaking load. It is usually expressed as a percentage of the original nominal length. 3.5 tenacity: Ratio of the tension to the linear den- sity
14、 of an unstrained specimen. It is usually expressed in centinewtons per tex. 3.6 breaking tenacity: Ratio of a yarns breaking load to its linear density. It is usually expressed in centinewtons per tex. NOTE 1 For specimens of known linear density, the breaking tenacity can be obtained directly from
15、 tensile- testing machines which can be suitable adjusted to indicate tenacity instead of breaking load. 3.7 twist: Number of turns about the axis of a length equal to the nominal gauge length before un- twisting. Twist is expressed preferably in turns per metre, but may also be expressed in turns p
16、er centimetre. IS0 10290:1993(E 3.8 twist factor: A measure of the “twist hardness” of a yarn, calculated by multiplying the number of turns per unit length by the square root of the linear density in a direct system. It is typically expressed in turns per centimetre x (tex)l/? 3.9 grey cotton yarn:
17、 Yarn as it leaves the spinning frame, without any bleaching, dyeing or finishing treatment, and in the case of open-end yarn, waxed or unwaxed. 4 Requirements The performance requirements and tolerances applied to yarn for use in the textile industry shall be agreed between the purchaser and manufa
18、cturer. Examples, for information only, are given in annex A . 4.1 Yarn linear density The linear density of the yarn shall be determined in accordance with IS0 2060 (see also IS0 1144). 4.2 Evenness The evenness of the yarn shall be determined, for example in accordance with ASTM D 1425. 4.3 Breaki
19、ng load/tenacity and elongation at break The breaking load of single strands and elongation at break shall be determined in accordance with IS0 2062. 4.4 Skein breaking strength The skein breaking strength of the yarn shall be de- termined in accordance with IS0 6939. 4.5 Yarn twist The number of tu
20、rns per unit length shall be deter- mined in accordance with IS0 2061. The direction for twist shall be indicated by the capital letter “S” or “Z” as specified in IS0 2. 4.6 Moisture regain Moisture regain shall be determined in accordance with IS0 6741-1. 5 Marking The details of marking shall be s
21、ubject to agreement between purchaser and manufacturer. Where appro- priate, individual units shall be identified. It is recommended that purchaser and manufacturer select from the following list: a) name of material; b) linear density; c) lot number; d) manufacturers name, trademark or other means
22、of identification; e) spinning method used, e.g. ring or rotor; f) individual package size/mass; g) mass of consignment, in accordance with IS0 6741-I ; h) whether carded or combed; i) whether waxed or unwaxed. 6 Sampling and inspection The sampling procedure for inspection shall be agreed between p
23、urchaser and manufacturer. In the absence of any agreed sampling procedure, reference shall be made to IS0 3951. 7 Quality control It is recommended that manufacturers use IS0 8402 and operate quality control procedures in line with IS0 9000, IS0 9001, IS0 9002, IS0 9003 and IS0 9004 in order to ass
24、ure that they are able to manufacture yarns consistently to the required stan- dard. IS0 10290:1993(E) Annex A (informative) Examples of cotton yarn specifications It must be emphasized that the data shown in tableA. are given ONLY AS EXAMPLES, to illustrate the format which might be used to set out
25、 specifications for cotton yarn. They have been selected on the basis of available data to be as realistic as possible, but cannot in any way serve to replace requirements which may be contained in a commercial contract. Table A.1 Specification Characteristic Nominal count (tex) Nominal count Number
26、 English (Ne) % CVI) of count*) Permitted % deviation from a nominal count Twist factor (tex) Direction of twist Permitted % deviation of twist Breaking tenacity*) (cN/tex) Evenness % CVI) (deter- mined in accordance with, for example, ASTM D 1425) Appearance (determined in accordance with, for exam
27、- ple, ASTM D 2255) Carded ring-spun for Combed ring-spun for weaving knitting 37 20 16 30 4 max. 4 max. 3 max. 3 max. 38 34 s or z s or z 5 max. 5 max. 13 min. 13 min. 17,5 max. 14,5 max. Grade D or better Grade C or better Carded rotor-spun for weaving 37 16 4 max. 3 max. 42 Z 5 max. 9,5 min. 16 m
28、ax. Grade C or better 1) CV = coefficient of variation. 2) Useful guidelines for these properties may be found in Uster SWstics 1989, published by Zellweger Uster A.G., 8610 Uster/Zti, Switzerland. IS0 10290:1993(E) Annex B (informative) c11 VI PI Cdl PI I31 VI IS0 139:1973, Textiles - Standard atmo
29、s- pheres for conditioning and testing. IS0 1139:1973, Textiles - Designation of yarns. IS0 2947:1973, Textiles - Integrated conver- sion table for replacing traditional yarn numbers by rounded values in the Tex System. lSO/TR 8091 :I 983, Textiles - Twist factor re- lated to the Tex System. IS0 674
30、1-2:1987, Textiles - Fibres and yarns - Determination of commercial mass of consignments - Part 2: Methods for obtaining labora tory samples. IS0 8402: 1986, Quality - Vocabulary. IS0 9000: 1987, Quality management and quality assurance standards - Guidelines for selection and use. t-81 PI t-101 t-1
31、 11 lx1 Cl31 IS0 9001: 1987, Quality systems - Model for quality assurance in design/development, pro- duction, installation and servicing. IS0 9002: 1987, Quality systems - Model for quality assurance in production and installation. IS0 9003:1987, Quality systems - Model for quality assurance in fi
32、nal inspection and test. IS0 9004: 1987, Quality management and quality sys tern elements - Guidelines. ASTM D 1425-89, Standard test method for unevenness of textile strands using capacitance testing equipment. ASTM D 2255-87, Standard test method for grading cotton yarns for appearance. 4 This page intentionally left blank IS0 10290:1993(E) UDC 677.072.33:677.017 Descripto rs: textiles, marking, common qu al cotton, yams, ity standards. cotton spun yarns, carded yarns, combed yarns, specifications, performance evaluation, tests, Price based on 4 pages
