ASTM_D_2061_-_07_2021.pdf

Designation:D206107(Reapproved 2021)Standard Test Methods forStrength Tests for Zippers1This standard is issued under the fixed designation D2061;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 These test methods cover the determination of thestrengths for zipper and zipper parts.All methods are notsuitable for use with all kinds of zipper.The restrictions,if any,are indicated in the scope for each individual test method.Thetest methods appear as follows:SectionsHolding Strengths of Separable Units25 32Holding Strength of Slider Lock92 100Holding Strength of Stops17 24Resistance to Angular Pull-Off of Slider Pull82 91Resistance to Cushioned Compression of Sliders33 42Resistance to Pull-Off of Slider Pull72 81Resistance to Twist of Pull and Slider52 61Slider Deflection and Recovery43 51Strength of Chains and Elements9 16Torsional Resistance of Slider Pull for Removal ofComponents62 711.2 The values stated in SI units are to be regarded asstandard.The values given in parentheses after SI units areprovided for information only and are not considered standard.1.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D76/D76M Specification for Tensile Testing Machines forTextilesD123 Terminology Relating to TextilesD1776/D1776M Practice for Conditioning and Testing Tex-tilesD2050 Terminology Relating to Subassemblies Used in theManufacture of TextilesD2051 Test Method for Durability of Finish of Zippers toLaunderingD2052 Test Method for Colorfastness of Zippers to Dry-cleaningD2053 Test Method for Colorfastness of Zippers to LightD2054 Test Method for Colorfastness of Zipper Tapes toCrockingD2057 Test Method for Colorfastness of Zippers to Laun-deringD2058 Test Method for Durability of Finish of Zippers toDrycleaningD2059/D2059M Test Method for Resistance of Zippers toSalt Spray(Fog)D2060 Test Methods for Measuring Zipper DimensionsD2062 Test Methods for Operability of Zippers2.2 U.S.Government Standard:MIL-105D Sampling Procedures and Tables for Inspectionby Attributes33.Terminology3.1 Definitions:3.1.1 For definitions of zipper terms used in this standard,refer to Terminology D2050.For definitions of other textileterminology used in this standard,refer to Terminology D123.4.Significance and Use4.1 The usefulness of a zipper in service can be evaluated bythese tests.No one test determines the suitability of a zipper fora specific end use.Since the tests are inter-related more thanone may be needed for a complete evaluation.4.2 These methods are considered satisfactory for accep-tance testing of commercial shipments because the methodshave been used extensively in the trade for this purpose,and1These test methods are under the jurisdiction of ASTM Committee D13 onTextiles are the direct responsibility of Subcommittee D13.54 on Subassemblies andwere developed in cooperation with the American Fastener and Closure Assn.Current edition approved July 1,2021.Published August 2021.Originallyapproved in 1961.Last previous edition approved in 2013 as D2061 07(2013).DOI:10.1520/D2061-07R21.2For referenced ASTM standards,visit the ASTM web site,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.ForAnnual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM web site.3Available from DLA Document Services,Building 4/D,700 Robbins Ave.,Philadelphia,PA 19111-5094,http:/quicksearch.dla.mil.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1because estimates of current between-laboratory precision areacceptable in most cases.4.2.1 If there are differences of practical significance be-tween reported test results for two laboratories(or more),comparative test should be performed to determine if there is astatistical bias between them,using competent statistical assis-tanc