ASTM_D_2724_-_07_2015.pdf

Designation:D272407(Reapproved 2015)Standard Test Methods forBonded,Fused,and Laminated Apparel Fabrics1This 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 These test methods cover procedures for characterizingthe delamination,strength of bond,appearance,and shrinkagepropensity of bonded,fused,and laminated apparel fabricsafter 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 may involve hazardous materials,operations,and equipment.This standard does not purport toaddress all of the safety concerns associated with its use.It isthe responsibility of the user of this standard to establishappropriate safety and health practices and determine theapplicability 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 TextilesD4850 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 Standard:124 Smoothness Appearance of Fabrics after RepeatedHome Laundering33.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:blister,bonded fabric,bond strength,bubble,crack mark,foamtear,fused fabric,fusible fabric,interlining,laminated fabric,lot,puckering,solvent,relative humidity.3.2 For definitions of other textile terms used in this testmethod,refer to Terminology D123.4.Summary of Test Methods4.1 Bench marks are placed at specified distances on thefabrics,which are then measured,and subsequently dry-cleaned,or laundered and dried,or both,through a prescribedcycle that is repeated a specified number of times.Thedrycleaned or washed specimens are examined for appearanceand delamination and measured to determine any accompany-ing shrinkage and,if desired,tested to determine the strength ofthe bond.5.Significance and Use5.1 These test methods for the determination of propertiesof bonded,fused,or laminated apparel fabrics,are consideredsatisfactory for acceptance testing of commercial shipments ofbonded and laminated apparel fabrics since the methods havebeen used extensively in the trade for acceptance testing.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 thelaboratories 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,4single-unit,coin-operated type,capable of providing a complete automatic dry-to-dry cycle1These test methods are under the jurisdiction of ASTM Committee D13 onTextiles and are the direct responsibility of Subcommittee D13.59 on Fabric TestMethods,General.Current edition approved July 1,2015.Published September 2015.Originallyapproved in 1968.Last previous edition approved in 2011 as D2724 07(2011).DOI:10.1520/D2724-07R15.2For referenced ASTM standards,visit the ASTM Wev 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 American Association of Textile Chemists and Colorists,P.O.Box 12215,Research Triangle Park,NC 27709.4Apparatus and accessories are commercially available.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 using perchlorethylene.It shall consist of a commercial rotat-ing cage type,totally enclosed machine.The diameter of therotating cage shall be not less than 600 mm(24 in.)and notmore than 1080 mm(42 in.).Its depth shall be not less than 300mm(12 in.).It shall be fitted with two to four lifters.The speedshall be such as to give a g-factor b