CAN CGSB-4 2 NO 39-2004 Textile Test Methods Textiles Woven Fabrics Construction Methods of Analysis Part 3 Determination of Crimp of Yarn in Fabric.pdf

1、 CAN/CGSB-4.2 No. 39-2004 ISO 7211-3:1984, IDT Supersedes CAN/CGSB-4.2 No. 39-M88 Reaffirmed October 2013 International Organization for Standardization National Standard of Canada ICS 59.080.30 ISO 1984. CGSB 2013. All rights reserved. Unauthorized reproduction is strictly prohibited. Textile test

2、methods Textiles Tear properties of fabrics Part 1: Determination of tear force using ballistic pendulum method (Elmendorf) (ISO 13937-1:2000, IDT) Textile test methods Textiles Woven fabrics Construction Methods of analysis Part 3: Determination of crimp of yarn in fabric (ISO 7211-3:1984, IDT) The

3、 CANADIAN GENERAL STANDARDS BOARD (CGSB), under whose auspices this standard has been developed, is a government agency within Public Works and Government Services Canada. CGSB is engaged in the production of voluntary standards in a wide range of subject areas through the media of standards committ

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10、primary application of this standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the standard to judge its suitability for their particular purpose. The testing and evaluation of a product against this standard may require the use of materials a

11、nd/or equipment that could be hazardous. This document does not purport to address all the safety aspects associated with its use. Anyone using this standard has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjunction with any

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22、 NSCs are cautioned to obtain the latest edition from the SDO that publishes the standard. The responsibility for approving standards as NSCs rests with: Standards Council of Canada 270 Albert Street, Suite 200 Ottawa, Ontario K1P 6N7, CANADA How to order Publications: by telephone 819-956-0425 or 1

23、-800-665-2472 by fax 819-956-5740 by mail CGSB Sales Centre Gatineau, Canada K1A 1G6 in person Place du Portage Phase III, 6B1 11 Laurier Street Gatineau, Quebec by email ncr.cgsb-ongctpsgc-pwgsc.gc.ca on the Web www.tpsgc-pwgsc.gc.ca/ongc-cgsb NATIONAL STANDARD OF CANADA CAN/CGSB-4.2 No. 39-2004 IS

24、O 7211-3:1984, IDT Supersedes CAN/CGSB-4.2 No. 39-M88 Reaffirmed October 2013 Textile test methods Textiles Woven fabrics Construction Methods of analysis Part 3: Determination of crimp of yarn in fabric (ISO 7211-3:1984, IDT) CETTE NORME NATIONALE DU CANADA EST DISPONIBLE EN VERSIONS FRANAISE ET AN

25、GLAISE. Published August 2004 by the Canadian General Standards Board Gatineau, Canada K1A 1G6 HER MAJESTY THE QUEEN IN RIGHT OF CANADA, as represented by the Minister of Public Works and Government Services, the Minister responsible for the Canadian General Standards Board (2004). No part of this p

26、ublication may be reproduced in any form without the prior permission of the publisher. Prepared by the International Organization for Standardization Reviewed by the Canadian General Standards Board Approved by the CAN/CGSB-4.2 No. 39-2004 ISO 7211-3:1984, IDT CGSB 2013 All rights reserved CANADIAN

27、 GENERAL STANDARDS BOARD Committee on Textile Test Methods and Terminology (Voting membership at date of reaffirmation) General interest category Batcheller, J. University of Alberta Carrick, D. Consultant Davie, N. Consultant Liu, S. University of Manitoba Man, T.M. Consultant Tait, C. National Def

28、ence/DSSPM Producer category Adam, C. Tencate Protective Fabrics Canada Boivin, D. E.I. DuPont Co. Lawson, L. Davey Textile Solutions Leblanc, J.-M. Marv Holland Apparel Ltd. Schumann, E. Lincoln Fabrics Ltd. Taylor, V. Invista (Canada) Co. Regulator category Andersson, C. Health Canada User categor

29、y Bourget, S. National Defence/QETE DEntremont, E. Royal Canadian Mounted Police Izquierdo, V. Textile Technologies Centre Kohli, G. Sears Canada Inc. Larsen, A.-L. Exova Group Ltd. Litva, M. Canada Border Services Agency MacLeod, J. Public Works and Government Services Canada Tebbs, C. Internationa

30、l Drycleaners Congress Secretary (non-voting) Grabowski, M. Canadian General Standards Board CGSB 2013 All rights reserved i CAN/CGSB-4.2 No. 39-2004 ISO 7211-3:1984, IDT Supersedes CAN/CGSB-4.2 No. 39-M88 Reaffirmed October 2013 Preface to the National Standard of Canada This National Standard of C

31、anada has been reaffirmed by the CGSB Committee on Textile Test Methods and Terminology and has been approved as a National Standard of Canada by the Standards Council of Canada. It is identical in content and in layout with International Standard ISO 7211-3, Textiles Woven fabrics Construction Meth

32、ods of analysis Part 3: Determination of crimp of yarn in fabric, published 1984-03-15 by the International Organization for Standardization (ISO), and is reprinted with the permission of ISO. The international standard was reviewed by the CGSB committee to determine its suitability for Canadian use

33、. Canadian Note: The CGSB Committee agreed that in Canada, for the purpose of this standard, the word “thread” should be interpreted as “yarn.” In this context, “yarn” and “thread” are defined as follows: Yarn A continuous strand of textile fibres that may be composed of endless filaments or shorter

34、 fibres twisted or otherwise held together. Yarns may be single or ply, and form the basic elements for cabled yarn, fabric, thread and twine. Thread The term is often applied loosely to yarn used for weaving and knitting, and is commonly used to describe fabric count as threads per unit length. Thr

35、oughout this standard, the words “National Standard of Canada” are to be understood as replacing the words “International Standard” wherever they appear. Some terminology and conventions are not identical to those used in other test methods within CAN/CGSB-4.2 Textile Test Methods. For example, the

36、comma is used throughout this standard as a decimal marker rather than the point. The following National Standard of Canada corresponds to the referenced ISO standard: CANADA ISO CAN/CGSB-4.2 No. 2 ISO 139 The testing and evaluation of a product against this method may require the use of materials a

37、nd equipment that could be hazardous. This method does not purport to address all the safety aspects associated with its use. Anyone using this method has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjunction with any applic

38、able regulatory requirements prior to its use. The CGSB National Standards of Canada may be obtained from the Canadian General Standards Board, Sales Centre, Gatineau, Canada K1A 1G6. Telephone 819-956-0425 or 1-800-665-2472. Fax 819-956-5740. E-mail ncr.cgsb-ongctpsgc-pwgsc.gc.ca. Web site www.tpsg

39、c-pwgsc.gc.ca/ongc-cgsb. The International Standards may be obtained from IHS Global Canada Ltd., 200-1331 MacLeod Trail SE, Calgary, Alberta T2G 0K3, telephone 613-237-4250 or 1-800-267-8220, fax 613-237-4251, Web site .International Standard 7211 I3 INTERNATIONAL ORGANIZATION FOR STANDARDIZATIONWI

40、EMYHAPOHAR OPrAHM3AMR f-l0 CTAHAPTM3AL any residual crimp is then ignored. When a figured fabric is under examination, it will be necessary to ensure that threads for testing are taken from a complete repeat of the pattern. 1 Scope and field of application This part of IS0 7211 specifies a method fo

41、r the determination of crimp of yarn in fabric. The method is applicable to most woven fabrics but is unsuitable for fabrics manufactured in such a way as to render removal of the crimp from the yarns im- possible or impractical under the specified straightening ten- sion. 2 Reference IS0 139, Textl

42、es - Standard atmospheres for conditioning and testing. 3 Definitions For the purposes of this part of IS0 7211, the following defini- tions apply : 3.1 percentage crimp: The mean difference between the straightened thread length and the distance between the ends of the thread while in the fabric, e

43、xpressed as a percentage of the latter. 3.2 straightening tension: The minimum force which, when applied to a yarn, removes the crimp caused by weaving. 4 Principle Threads are removed from a strip of fabric of known length, straightened by a tension which is varied according to the nature and linea

44、r density of the yarn and measured in the straightened state. The difference between the straightened length of the thread and the distance between the ends while in the fabric is expressed as a percentage of the latter. 5 Apparatus 5.1 Thread straightening and measuring device, horizon- tal or vert

45、ical and complying with the following requirements: a) there shall be two yarn grips, each of which closes at its rear end first and when closed has parallel gripping- surfaces; b) it shall be possible to alter the distance between the grips; c) it shall be possible to measure the distance between t

46、he grips; d) a datum line shall be marked on one gripping-surface of each grip, about 2,5 mm from the edge nearest the other grip, which is visible when the grip is closed ; e) it shall be possible to apply the specified straightening tension to the yarn through one of the grips. 5.2 Rule, graduated

47、 in the same units as the thread- straightening device. 5.3 Dissecting needle. 6 Conditioning and testing atmosphere One of the atmospheres for conditioning and testing textiles as defined in IS0 139 shall be used for conditioning and testing. 7 Test specimens Condition the sample for at least 16 h.

48、 Lay the conditioned fabric flat, free from tension and free from creases. Mark five rectangular strips on the fabric, two with their long sides parallel to the warp threads and three with their long sides parallel to the weft threads. IS0 7211134984 (E) Ensure that each strip is at least ten thread

49、s in width, and is at least 20 times as long as the parts of the test Specimen that will be gripped within both jaws of the apparatus. Cut along the two short sides and one long side of each rec- tangular strip so as to produce five flaps in the fabric. Measure the distance between the two short sides of each flap in millimetres. NOTE - If it is desired to combine the determination of crimp with a determination of yarn linear density, it will be necessary to prepare a further two weftway strips and to ensu