ASTM_D_5848_-_10e1.pdf

Designation:D5848101Standard Test Method forMass Per Unit Area of Pile Yarn Floor Coverings1This standard is issued under the fixed designation D5848;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.1NOTESection references were corrected in the Scope in September 2010.1.Scope1.1 This test method covers the measurement of mass perunit area of machine-made woven,knitted,and tufted pile yarnfloor covering both before and after an adhesive-back coatingapplication.1.2 This test method encompasses three techniques fordetermination of mass per unit area as applicable:1.2.1 Section 7,for determining total mass per unit area,applies to both coated and uncoated(unfinished)pile floorcoverings.1.2.2 Section 8,for determining component mass per unitarea,applies only to uncoated(unfinished)pile yarn floorcoverings.1.2.3 Section 9,for determining pile yarn mass per unit area,applies only to back-coated,or finished,pile yarn floorcoverings.1.3 Determination of mass per unit area of pile yarn floorcoverings was previously contained within Test MethodsD418.For user convenience,Subcommittee D 13.21 subdi-vided Test Methods D418 into separate standards,of which thistest method is one.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.Specific precau-tionary statements are given in 9.5.2.Referenced Documents2.1 ASTM Standards:2D123 Terminology Relating to TextilesD418 Test Method for Testing Pile Yarn Floor CoveringConstruction(Withdrawn 1998)3D1193 Specification for Reagent WaterD1776 Practice for Conditioning and Testing TextilesD1909 Standard Table of Commercial Moisture Regains forTextile FibersD5684 Terminology Relating to Pile Floor CoveringsE122 Practice for Calculating Sample Size to Estimate,WithSpecified Precision,the Average for a Characteristic of aLot or ProcessD2904 Practice for Interlaboratory Testing of a Textile TestMethod that Produces Normally Distributed Data(With-drawn 2008)3D2906 Practice for Statements on Precision and Bias forTextiles(Withdrawn 2008)33.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:backcoating,backing,backing fabric,binding sites,buried pileyarn,carpet,components,extractable matter,finished,finishedpile yarn floor covering,floor covering,multilevel pile,pile,pile yarn floor covering,pile yarn mass,pitch,primarybacking,secondary backing,stubble,textile floor covering,total mass,tufted fabric.3.2 For all other terminology related to textiles,refer toTerminology D123.1This 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 June 1,2010.Published July 2010.Originally approvedin 1995.Last previous edition approved in 2007 as D5848 07.DOI:10.1520/D5848-101.2For 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 States1 4.Significance and Use4.1 The determination of the mass per unit area of pile yarnfloor covering is useful in quality and cost control during themanufacture of pile floor covering.Both appearance andperformance may be affected by changes in mass per unit area.4.2 In case of a dispute arising from differences in reportedtest results when using this test method for acceptance testingof commercial shipments,the purchaser and supplier shouldconduct comparison testing to determine if there is a statisticalbias between their laboratories.Competent statistical assis-tance is recommended for the investigation of bias.As aminimum the two parties should take a group of test specimensthat are as homogeneous as possible and that are from a lot ofmaterial of the type in question.The test specimens should thenbe randomly assigned to each laboratory for testing.Theaverage results from the two laboratories should be comparedusing Students t-test for unpaired data and an acceptableprobability level chosen by the two parties prio