ASTM_D_2724_-_19.pdf

Designation:D272419Standard Test Method forBond Strength of Bonded,Fused,and Laminated ApparelFabrics1This standard is issued under the fixed designation D2724;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers procedures for characterizingthe bond strength of bonded,fused,and laminated apparelfabrics before or after drycleaning and laundering.1.2 The values stated in SI units are to be regarded asstandard;the values in parentheses are provided as informationonly.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.See 6.1.1 for a specific warning.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 Specification for Tensile Testing Machines for TextilesD123 Terminology Relating to TextilesD1776 Practice for Conditioning and Testing TextilesD3135 Specification for Performance of Bonded,Fused,andLaminated Apparel FabricsD4850 Terminology Relating to Fabrics and Fabric TestMethodsE337 Test Method for Measuring Humidity with a Psy-chrometer(the Measurement of Wet-and Dry-Bulb Tem-peratures)2.2 AATCC Standards:3LP1 Home Laundering:Machine WashingLP2 Home Laundering:Hand WashingTM135 Dimensional Changes of Fabrics after Home Laun-deringTM158 Dimensional Changes on Drycleaning in Perchloro-ethylene:Machine Method3.Terminology3.1 For all terminology relating to D13.59,Fabric TestMethods,General,refer to Terminology D4850.3.1.1 The following terms are relevant to this standard:bonded fabric,bond strength,fused fabric,fusible fabric,interlining,laminated fabric,lot,relative humidity.3.2 For definitions of other textile terms used in this testmethod,refer to Terminology D123.4.Summary of Test Methods4.1 Specimens are tested to determine the strength of thebond as received,after drycleaning,or after laundering.5.Significance and Use5.1 This test method for the determination of bond strengthof bonded,fused,or laminated apparel fabrics,is consideredsatisfactory for acceptance testing of commercial shipments ofbonded and laminated apparel fabrics.5.1.1 If there are differences of practical significance be-tween reported test results for two laboratories(or more),comparative tests should be performed to determine if there isa statistical bias between them,using competent statisticalassistance.As a minimum,use the samples for such a com-parative test that are as homogeneous as possible,drawn fromthe same lot of material as the samples that resulted in disparateresults during initial testing.Randomly assign specimens inequal numbers to each laboratory.The test results from the1This test method is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.59 on Fabric Test Methods,General.Current edition approved Jan.1,2019.Published January 2019.Originallyapproved in 1968.Last previous edition approved in 2015 as D2724 07(2015).DOI:10.1520/D2724-19.2For referenced ASTM standards,visit the ASTM website,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 website.3Available from American Association of Textile Chemists and Colorists(AATCC),P.O.Box 12215,Research Triangle Park,NC 27709-2215,http:/www.aatcc.org.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.1 laboratories involved should be compared using a statisticaltest for unpaired data and a probability level chosen prior to thetesting series.If bias is found,either its cause must be foundand corrected,or future test results for that material must beadjusted in consideration of the known bias.6.Apparatus and Materials6.1 Drycleaning Machine,4as described inAATCC TM158.6.1.1 Perchloroethylene(commercial),drycleaning grade.WarningPerchlorethy