ASTM_D_6840_-_02_2021.pdf

Designation:D684002(Reapproved 2021)Standard Test Method forEffect of Drycleaning on Buttons1This standard is issued under the fixed designation D6840;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 This test method is a means of determining the effect ofdrycleaning on certain physical attributes of buttons.The testmethod applies to buttons made from plastics,naturalmaterials,cast metal,stamped metal,and electroplated plastic.1.1.1 The observed attributes of buttons made from plasticand natural materials include:color change,color transfer,solubility,swelling,and loss of finish.1.1.2 The observed attributes of buttons made of metal andelectroplated buttons include:color change,oxidation,andcolor transfer.1.2 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.1.3 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:2D123 Terminology Relating to TextilesD2724 Test Method for Bond Strength of Bonded,Fused,and Laminated Apparel FabricsD3136 Terminology Relating to Care Labeling for Apparel,Textile,Home Furnishing,and Leather ProductsD5497 Terminology Relating to Buttons(Withdrawn 2011)33.Terminology3.1 DefinitionsFor definitions of terms used in this testmethod,refer to Terminologies D123,D5497,and D3136.4.Summary of Test Method4.1 Specimens are sewn onto fabric and subjected to com-mercial dry cleaning.The dry cleaned specimens are measuredand visually compared to an original specimen.5.Significance and Use5.1 This test method is useful for determining the change tothe listed properties(see 1.1.1 and 1.1.2)and if the changes areacceptable for the intended use.This test may be used foracceptance testing of commercial shipments of buttons.5.2 If there are differences of practical significance betweenthe reported test results for two laboratories(or more),com-parative tests should be performed to determine if there is astatistical bias between them.As a minimum,test samplesshould be used that are as homogeneous as possible,that aredrawn from the material from which the disparate test resultswere obtained,and that are randomly assigned in equalnumbers to each laboratory for testing.The test results for thetwo laboratories should be compared using a statistical test forunpaired data,at a probability level chosen prior to the testingseries.If a bias is found,either its cause must be found andcorrected,or future test results for that material must beadjusted in consideration of the known bias.6.Apparatus6.1 The drycleaning apparatus shall be as specified in TestMethod D2724.6.2 AATCC Multifiber Test Fabric No.10 or FA.6.3 Undyed Cotton Twill Cloth,weighing 270 g m 670 g m(0.6 lb yd 6 0.15 lb/yd).6.4 Measuring DeviceA set of measuring calipers ormicrometer is required to determine the dimensions of thebuttons before and after testing.7.Sampling,Test Specimens,and Test Units7.1 Laboratory SampleRandomly select approximately100 samples,from the same carton and from boxes within thatcarton,that adequately represent the material from which testspecimens may be chosen.1This test method is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.54 on Subassemblies.Current edition approved July 1,2021.Published July 2021.Originally approvedin 2002.Last previous edition approved in 2013 as D684002(2013).DOI:10.1520/D6840-02R21.2For 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.3The last approved version of this historical standard is referenced onwww.astm.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.17.2 Test SpecimenRandomly select 10 to 20 buttons fromthe laboratory sample for testing.If the test specimens aresubmitted for pre-product