Designation:D2646−11StandardTestMethodsforBackingFabricCharacteristicsofPileYarnFloorCoverings1ThisstandardisissuedunderthefixeddesignationD2646;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesetestmethodscovertheprocedureslistedasfollowsfortestingwoven,knittedandnonwovenbackingfabricsdesignedforuseinthemanufactureofpileyarnfloorcoverings.Theproceduresappearinthefollowingorder:SectionBowandSkewnessofWovenFabrics8BreakingForceofWovenandNonwovenFabrics15BreakingForceAfterTuftingofWovenandNonwovenFabrics16ExtractableMatter9FabricCountofWovenFabrics12FabricCountofKnittedFabrics13LengthofWovenFabrics11MassperUnitArea(Weight)ofWovenFabrics14Shrinkage—HotWetMethod17Shrinkage—HotDryMethod18WidthofWovenFabrics101.2Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D123TerminologyRelatingtoTextilesD1776PracticeforConditioningandTestingTextilesD2257TestMethodforExtractableMatterinTextilesD3773TestMethodsforLengthofWovenFabricD3774TestMethodforWidthofTextileFabricD3775TestMethodforWarp(End)andFilling(Pick)CountofWovenFabricsD3776TestMethodsforMassPerUnitArea(Weight)ofFabricD3882TestMethodforBowandSkewinWovenandKnittedFabricsD3887SpecificationforTolerancesforKnittedFabricsD5034TestMethodforBreakingStrengthandElongationofTextileFabrics(GrabTest)D5684TerminologyRelatingtoPileFloorCoverings3.Terminology3.1FordefinitionsoftermsrelatingtoPileFloorCoverings...
