ASTM_D_6540_-_12.pdf

Designation:D654012Standard Test Method forAccelerated Soiling of Pile Yarn Floor Covering1This standard is issued under the fixed designation D6540;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 describes the equipment,and the testmethod for assessing the propensity of pile yarn floor coveringsto soiling in the absence of abrasive wear and texture changes,using a standard synthetic soil composition.1.2 This test method is applicable for use in testing unusedpile yarn floor covering of all types.It is not applicable for usein testing used pile yarn floor covering.1.3 This test method can be used to compare the soilingpropensity of two or more carpets;or it can be used to soilcarpets as a preliminary step to other test procedures.1.4 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.5 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:2D123 Terminology Relating to TextilesD1776 Practice for Conditioning and Testing TextilesD5684 Terminology Relating to Pile Floor Coverings2.2 ASTM Adjunct:TEX-PAC32.3 AATCC Test Method:Evaluation Procedure 1 Gray Scale for Color Change43.Terminology3.1 For definitions of terms relating to Pile Floor Coverings,D13.21,refer to Terminology D5684.3.1.1 The following terms are relevant to this standard:carpet,finished,finished pile yarn floor covering,floorcovering,pile,pile lay,pile yarn floor covering,soiling,textilefloor covering,tufted fabric,use-surface.3.2 For all other terminology related to textiles,refer toTerminology D123.4.Summary of Test Method4.1 The carpet test specimens are secured to a backing sheetthat is mounted inside the drum with the pile surface exposed,and are subjected to an accelerated soiling process.The degreeof soiling is measured or assessed by comparing the change incolor between soiled and original pile yarn floor covering,using a measurement device or visually matching the differ-ences on the light-dark axis of Gray Scales.NOTE1Differentiation between test samples is significantly reducedwhen Gray Scales are used.5.Significance and Use5.1 This test method may be used to soil test specimens inthe absence of abrasive wear and texture changes undercontrolled conditions using a standard synthetic soil,or as apreliminary step to other procedures.5.2 This test method will provide a uniformly soiled testspecimen to evaluate,is reproducible(see section 11),and iseconomical for Testing Laboratories.5.3 This test method has been found to give results similarto the actual floor service soiling,but its use is recommendedonly as a screening test method and not as a replacement forfloor testing.5.4 The acceptance criteria of this test method shall be setby mutual agreement between the purchaser and supplier.6.Apparatus and Materials6.1 Hexapod Tumble Tester6.1.1 DrumConstructed of molded PVC and is capped bya lid that is secured.The drum base and lid have a locatinggroove to hold the specimen backing sheet flat to the inner wallof the drum.The drum dimensions are:1This test method is under the jurisdiction ofASTM Committee D13 on Textilesand is the direct responsibility of Subcommittee D13.21 on Pile Floor Coverings.Current edition approved Feb.1,2012.Published March 2012.Originallyapproved in 2000.Last previous edition approved in 2005 as D654005.DOI:10.1520/D6540-12.2For 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 PC program on floppy disks for analyzing Committee D13 interlaboratorydata are available from ASTM.Request ADJ:D2904.4Available from American Association of Textile Chemists and Colorists,POBox 12215,Research Triangle Park,NC 27709.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Internal Diameter12.00 0.04 in.(305 1 mm)Wall Thickness0.03 in.approx.(8 mm approx.)Internal Depth7.90 0.04 in.(200 1 mm)6.1.2 Driving SystemCradles the drum on rollers andkeeps the axis of the drum level,rotates at 0.60 6 0.03 r/s(356 2 rpm).The driving system reverses every 15 min withapproximately one minute stationary time.6.2 Specimen Backing Sheetis a polyethylene sheet 37.40by 8.50 by 0.08 in.(950 by 215 by 2 mm)6.3 Tapedouble sided