ASTM_D_5053_-_03_2015.pdf

Designation:D505303(Reapproved 2015)Standard Test Method forColorfastness of Crocking of Leather1This standard is issued under the fixed designation D5053;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 the determination of the degreeof color that may be transferred from leather to other surfacesby rubbing under wet(damp)or dry conditions,or both.Thistest method does not apply to wet blue.1.2 The values stated in inch-pound units are to be regardedas the standard.The values given in parentheses are forinformation only.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:2D1517 Terminology Relating to LeatherD1610 Practice for Conditioning Leather and Leather Prod-ucts for TestingD2813 Practice for Sampling Leather for Physical andChemical Tests2.2 AATCC Methods:AATCC Method 8 Colorfastness to Crocking:AATCC Crockmeter Method3AATCC Chromatic Transference Scale or Gray Scale forStaining33.Terminology3.1 DefinitionsFor definitions of colorfastness andcrocking,refer to AATCC Method 8.For other specific leatherterminology,see Terminology D1517.4.Summary of Test Method4.1 Aspecimen of the leather sample fastened to the base ofa crockmeter is rubbed with white crock test cloth undercontrolled conditions.Color transferred to the white cloth isassessed by a comparison with the AATCC chromatic trans-ference scale;an alternative is to use the gray scale for stainingas suggested in AATCC Method 8.5.Significance and Use5.1 This test method is intended for use on any type ofleather.6.Apparatus6.1 Apparatus,as specified in AATCC Test Method 8.4,56.2 Test Cloth,white crock.5,66.3 Test Cloth,black crock.5,77.Sampling,Test Specimens,and Test Units7.1 The minimum size of the test specimen shall be 2 by 5in.(5.1 by 12.7 cm).However,where nondestructive testing ofskins is desired,the entire skin may be used and tested in anyportion of its area.(See Practice D2813 for proper samplingarea.)7.2 All specimens shall be conditioned as prescribed inPractice D1610.Conditioning other than as prescribed shall benoted in the results.8.Procedure8.1 Dry TestMount the test specimen flat on the base ofthe testing machine with its long dimensions in the direction of1This test method is under the jurisdiction of ASTM Committee D31 on Leatherand is the direct responsibility of Subcommittee D31.04 on ApparelCurrent edition approved Sept.1,2015.Published October 2015.Originallyapproved in 1995.Last previous edition approved in 2009 as D5053 03(2009).DOI:10.1520/D5053-03R15.2For 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.3Technical Manual of theAmericanAssociation of Textile Chemist and Colorist,P.O.Box 12215,Research Triangle Park,NC 27709-2215.4The sole source of supply of the AATCC crockmeter known to the committeeat this time is Atlas Electric Devices Company,4114 North Ravenswood Avenue,Chicago,IL 60613.Telephone:(312)3274520.5If you are aware of alternative suppliers,please provide this information toASTM Headquarters.Your comments will receive careful consideration at a meetingof the responsible technical committee,1which you may attend.6The sole source of supply of test cloth known to the committee at this time isTestfabrics Inc.,200 Blackford Ave.,Middlesex,NJ 08846.Telephone:(908)4696446.Fax:(908)4691147.7The source of this test cloth is Textile Innovators Corp.,101 Forest St.,Windsor,NC 27983,Tel No.2527949703,Fax No.2527949704.Order as TIC400 Cotton print cloth,Direct Black 22.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 the motion of the finger.Use white cloth for testing coloredleathers,and use black cloth for white or light-colored leathers.Condition the piece of cloth,2 in.2,for at least 2 h in thestandard atmosphere.Then place on the end of the finger withthe weave of the cloth oblique to the direction of rubbing.Placethe finger with the cloth cover on the specimen and operate themachine for ten complete turns of the crank at a rate of one turnper second.When a comparison is required,test a standardspecimen in the same manner.8.2 Wet TestPlace a new area of the test specimen and anew piece of cloth on the testing machine as described in 8.1.Before placing the clo