1、 CAN/CGSB-4.2 No. 9.6-93 Supersedes CAN/CGSB-4.2 No. 9.6-M86 Extended June 2000 Reaffirmed November 2013 National Standard of Canada ICS 59.080.30 Textile test methods Breaking strength of nonwoven textiles The CANADIAN GENERAL STANDARDS BOARD (CGSB), under whose auspices this standard has been deve
2、loped, 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 committees and the consensus process. The standards committees are composed of representatives of
3、 relevant interests including producers, consumers and other users, retailers, governments, educational institutions, technical, professional and trade societies, and research and testing organizations. Any given standard is developed on the consensus of views expressed by such representatives. CGSB
4、 has been accredited by the Standards Council of Canada as a national standards-development organization. The standards that it develops and offers as National Standards of Canada conform to the criteria and procedures established for this purpose by the Standards Council of Canada. In addition to s
5、tandards it publishes as National Standards of Canada, CGSB produces standards to meet particular needs, in response to requests from a variety of sources in both the public and private sectors. Both CGSB standards and CGSB national standards are developed in conformance with the policies described
6、in the CGSB Policy and Procedures Manual for the Development and Maintenance of Standards. CGSB standards are subject to review and revision to ensure that they keep abreast of technological progress. CGSB will initiate the review of this standard within five years of the date of publication. Sugges
7、tions for their improvement, which are always welcome, should be brought to the notice of the standards committees concerned. Changes to standards are issued either as separate amendment sheets or in new editions of standards. An up-to-date listing of CGSB standards, including details on latest issu
8、es and amendments, and ordering instructions, is found in the CGSB Catalogue at our Web site www.tpsgc-pwgsc.gc.ca/ ongc-cgsb along with more information about CGSB products and services. Although the intended primary application of this standard is stated in its Scope, it is important to note that
9、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 and/or equipment that could be hazardous. This document does not purport to address all the
10、 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 applicable regulatory requirements prior to its use. CGSB neither assumes nor accepts any
11、 responsibility for any injury or damage that may occur during or as the result of tests, wherever performed. Attention is drawn to the possibility that some of the elements of this Canadian standard may be the subject of patent rights. CGSB shall not be held responsible for identifying any or all s
12、uch patent rights. Users of this standard are expressly advised that determination of the validity of any such patent rights is entirely their own responsibility. Further information on CGSB and its services and standards may be obtained from: The Manager Standards Division Canadian General Standard
13、s Board Gatineau, Canada K1A 1G6 The Standards Council of Canada (SCC) is the coordinating body of the Canadian standardization network, which is composed of people and organizations involved in the development, promotion and implementation of standards. Through the collaborative efforts of Canadian
14、 standardization network members, standardization is helping to advance the social and economic well-being of Canada and to safeguard the health and safety of Canadians. The networks efforts are overseen by SCC. The principal objectives of SCC are to foster and promote voluntary standardization as a
15、 means of advancing the national economy, supporting sustainable development, benefiting the health, safety and welfare of workers and the public, assisting and protecting the consumer, facilitating domestic and international trade, and furthering international cooperation in relation to standardiza
16、tion. An important facet of the Canadian standards development system is the use of the following principles: consensus; equal access and effective participation by concerned interests; respect for diverse interests and identification of those who should be afforded access to provide the needed bala
17、nce of interests; mechanism for dispute resolution; openness and transparency; open access by interested parties to the procedures guiding the standards development process; clarity with respect to the processes; and Canadian interest consideration as the initial basis for the development of standar
18、ds. A National Standard of Canada (NSC) is a standard prepared or reviewed by an SCC-accredited SDO and approved by the SCC according to NSC approval requirements. Approval does not refer to the technical content of the standard, as this remains the responsibility of the SDO. An NSC reflects a conse
19、nsus of a number of capable individuals whose collective interests provide, to the greatest practicable extent, a balance of representation of general interests, producers, regulators, users (including consumers) and others with relevant interests, as may be appropriate to the subject at hand. NSCs
20、are intended to make a significant and timely contribution to the Canadian interest. Those who have a need to apply standards are encouraged to use NSCs. These standards are subject to periodic review. Users of NSCs are cautioned to obtain the latest edition from the SDO that publishes the standard.
21、 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 1-800-665-2472 by fax 819-956-5740 by mail CGSB Sales Centre Gatineau, Canada K1A 1G6 in pe
22、rson 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. 9.6-93 Supersedes CAN/CGSB-4.2 No. 9.6-M86 Extended June 2000 Reaffirmed November 2013 Textile test
23、methods Breaking strength of nonwoven textiles CETTE NORME NATIONALE DU CANADA EST DISPONIBLE EN VERSIONS FRANAISE ET ANGLAISE. Published April 1993 by the Canadian General Standards Board Gatineau, Canada K1A 1G6 Minister of Supply and Services Canada 1993 No part of this publication may be reprodu
24、ced in any form without the prior permission of the publisher. Prepared by the Canadian General Standards Board Approved by the CAN/CGSB-4.2 No. 9.6-93 CGSB 2013 All rights reserved CANADIAN GENERAL STANDARDS BOARD Committee on Textile Test Methods and Terminology (Voting membership at date of reaff
25、irmation) 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 Defence/DSSPM Producer category Adam, C. Tencate Protective Fabrics Canada Boivin, D. E.I. DuPont Co. Lawson, L.
26、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 category Bourget, S. National Defence/QETE DEntremont, E. Royal Canadian Mounted Police Izquierdo, V. Textile Technol
27、ogies 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. International Drycleaners Congress Secretary (non-voting) Grabowski, M. Canadian General Standards Board Acknowledgment is
28、 made for the translation of this National Standard of Canada by the Translation Bureau of Public Works and Government Services Canada. CGSB 2013 All rights reserved i CAN/CGSB-4.2 No. 9.6-93 Supersedes CAN/CGSB-4.2 No. 9.6-M86 Extended June 2000 Reaffirmed November 2013 Preface to the National Stan
29、dard of Canada This National Standard of Canada has been extended and reaffirmed by the CGSB Committee on Textile Test Methods and Terminology. Editorial changes have been made by the correction of the following paragraph: 8.1 Source of Referenced Publications The publications referred to in par. 3.
30、1.1 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.tpsgc-pwgsc.gc.ca/ongc-cgsb.Supersedes CAN/CGSB-4.2No. 9.6-M86Extended June 2000Reaff
31、irmed 1RYember 20134.1.1 4.2 4.2.1 4.2.2 4.3 5. 5.1 5.1.1 5.1.2 5.1.3 5.1.4 5.1.5 5.1.6 5.2 5.2.1 5.2.2 6. 6.1 The maximum error of the indicated force at any point in the range shall not exceed 2% of the true force. Clamps The clamps of the machine shall be capable of holding the specimen without a
32、llowing it to slip. The faces of the jaws shall be flat (Note 3) and all edges that might cause a cutting action shall be rounded to a radius of not more than 0.5 mm (Note 4). When specimens cannot be satisfactorily held in this way, lining materials that will not injure the specimen (e.g., thin cor
33、k, adhesive tape) may be used on the gripping surfaces. The dimensions of the front and back gripping surfaces shall be at least 25 mm in the direction of the application of the force and at least 15 mm wider than the maximum width of the test specimen. Die capable of cutting specimens as described
34、in par. 5.1.5 and Figure 1. TEST SPECIMENS Conditioned Test The fabric shall be conditioned in accordance with CAN/CGSB-4.2 No. 2. The fabric sample shall be the full width of the fabric and at least 2.5 m in length. At least ten specimens shall be tested in both the machine and the cross directions
35、. If a higher degree of precision is required, more specimens shall be tested (Note 5). The specimens shall be taken across the fabric in both the machine and the cross directions with the 225 mm length parallel to the direction of test (Figure 2). Each dumbbell test specimen shall be 225 mm long an
36、d 50 mm wide and shall conform to the dimensions in Figure 1. Specimens shall be die-cut. Wet Test Specimens to be tested in the wet condition shall be selected and prepared according to par. 5.1.1 to 5.1.6 inclusive, and shall be immersed and thoroughly wetted in water at room temperature to which
37、0.2 to 0.4 g/L of a neutral nonionic wetting agent has been added (Note 6). The wet specimens shall be tested within 1 min after being withdrawn from the water (par. 5.2.1) to avoid partial drying. PROCEDURE Unless otherwise specified, the distance between the clamps shall be 100 I 1 mm. Note 3: As
38、a practical inethori of deteriuiiiiiig the degree offlatness and parallelisin of the gripping suifaces of each clamp, it is reconitnenderl that a sheet of thin white paper between two sheets of carbon paper be placed between the gripping sutfaces and the sutfaces then be brought together with light
39、pressure. Areas of contact will be shown by darkening of tlie white sheet. Note 4: Clamps that can be closed by tiyrlraulic pressure are recommended Dirt clamps that are closed inanually are satisfactory if sirfficiently high closing forces can be attained. Noie 5: if the precisioii with which break
40、iiig strength is to be tneasured is specified, reference should be macle to CAN/CCSB-4.2 No. 1 for procedures to determine the nuniber of test specimens required. Note 6: The only conclusive evidence that the time of inirversion has been sufficient to wet the fabric thoroughly is that firrther imtne
41、rsioii does not prorliice any adrlitioiial change in breakirig strength. This method of testing must be used iri case of dispute. For routine testing, however, it may he siqjficierit to irninerse the niaterial for 1 h. This procedure should be used with caution when testing fabrics thnt rio not wet
42、out readily because of (he presence of protective coatings or water reiwllents. 2 No. 9.6-93 6.2 6.3 6.4 6.5 7. 7.1 7.2 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 8. 8.1 Secure the specimen centrally in the clamps of the testing machine so that the long dimension is parallel to the direction of the application o
43、f the force. Care must be taken to ensure that the tension in the specimen is uniform across its full width. Select a force range of the testing machine such that the specimens will break between 20 and 85% of the full-scale force. Set constant-rate-of-extension at 200 mm/min. If a specimen slips in
44、 the clamps or breaks within the clamps, or if there is any reason to suspect faulty operation of the machine, discard the results (Note 7). Record the time to break in seconds. REPORT Calculate the average breaking strength for each direction of the fabric from the individual values, and report sep
45、arately in newtons (Note 8). Also report the following additional information: Type of tensile testing machine and force range used. Type of clamp liner, if used. Average time to break the specimen. State of specimens (conditioned or wet). The number of this test method: CAN/CGSB-4.2 No. 9.6-93. NOT
46、ES Source of Referenced Publications - The publications referred to in par. 3.1.1 may be obtained from the Canadian General Standards Board, Sales Centre, Ottawa, Canada K1A 1G6. Telephone (613) 941-8703 or 941-8704. Fax (613) 941-8705. Note 7: A test residt is considered satisfnctoty when there is
47、no spm”nen slippage and the specimen does not break at the clamps of he testing rnaciiine. If slippage occurs, increase the closing pressure of the jaws; if jaw breaks occur, reduce the pressure. Note 8: The average result for the slecitnens tested is an estimate of the true average for the material
48、 under test. A measure of the reliability of this estimate can be obtained by deterniining the confidence interval (CANKGSB-4.2 No. 1, par. 6.2) within which the true mean will lie for any given probabiliry. NO. 9.6-93 3 Mark for edge of jaws I t 1 20 mm 60n-m x Mark for / edge of jaws FIGURE 1 Dimensions of Specimen Take specimens from the test sample in the following manner: Length ICI ICI B H R ICI LI- FIGURE 2 Sampling Procedure M = Machine C = Cross NO. 9.6-93 5
