ASTM_D_2061_-_07_2013.pdf

Designation:D206107(Reapproved 2013)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 as thestandard.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 and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D76 Specification for Tensile Testing Machines for TextilesD123 Terminology Relating to TextilesD1776 Practice for Conditioning and Testing TextilesD2050 Terminology Relating to Fasteners and ClosuresUsed with 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 Test Method for Resistance of Zippers to Salt 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,andbecause 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-tance.As a minimum,the test samples should be used that areas homogeneous as possible,that are drawn from the materialfrom which the disparate test results were obtained,and that1These 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 Oct.1,2013.Published October 2013.Originallyapproved in 1961.Last previous edition approved in 2007 as D2061 07.DOI:10.1520/D2061-07R13.2For referenced ASTM standards,visit the ASTM web site,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM web site.3Available from Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 are randomly assigned in equal numbers to each laboratory fortesting.Other materials with established test values may beused for this purpose.The test results from the two laboratoriesshould be compared using a statistical test for unpaired data,ata probability level chosen prior to the testing series.If a bias isfound,either its cause must be found and corrected,or futuretest results must be adjusted in consideration of the knownbias.4.3 The method(s)in the standard along with those in TestMethods D2051,D2052,D2053,D2054,D2057,D2058,D2059,D2060,and D2062 are a collection of proven testmethods.They can