Designation:D3936−21StandardTestMethodforResistancetoDelaminationoftheSecondaryBackingofPileYarnFloorCovering1ThisstandardisissuedunderthefixeddesignationD3936;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthemeasurementoftheresis-tancetodelaminationofthesecondarybackingappliedtosomepileyarnfloorcoverings.1.2Thistestmethodisapplicabletoallbackingsincludingnaturalmanufacturedfibersorattachedcushion.1.3Thevaluesstatedininch-poundunitsaretoberegardedasstandard.ThevaluesgiveninparenthesesaremathematicalconversionstoSIunitsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D76SpecificationforTensileTestingMachinesforTextilesD123TerminologyRelatingtoTextilesD1776PracticeforConditioningandTestingTextilesD4697GuideforMaintainingTestMethodsintheUser’sLaboratory(Withdrawn2009)3D5684TerminologyRelatingtoPileFloorCoveringsE177PracticeforUseoftheTermsPrecisionandBiasinASTMTestMethods3.Terminology3.1ForallotherterminologyrelatedtoPileFloorCoverings,D13.21,seeTerminologyD5684.3.1.1Thefollowingtermsarerelevanttothisstandard:attachedcushion,carpet,constant-rate-of-extension,finished,finishedpileyarnfloorcovering,floorcovering,peakforce,pile,pileyarnfloorcovering...
