Designation:D5735–95(Reapproved2001)StandardTestMethodforTearingStrengthonNonwovenFabricsbytheTongue(SingleRip)Procedure(Constant-Rate-of-ExtensionTensileTestingMachine)1ThisstandardisissuedunderthefixeddesignationD5735;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthemeasurementofthetearingstrengthofnonwovenfabricsbythetongue(singlerip)procedureusingarecordingconstant-rate-of-extension(CRE)tensiletestingmachine.1.1.1TheCRE-typetensiletestingmachinehasbecomethepreferredtestapparatusfordeterminingtonguetearingstrength.Itisrecognizedthatsomeconstant-rate-of-traverse(CRT)tensiletestingmachinescontinuetobeused.Asaconsequence,thesetestinstrumentsmaybeusedwhenagreeduponbetweenthepurchaserandthesupplier.TheconditionsfortheCRT-typetensiletesterasusedwiththistestareincludedinAppendixX1.1.2Thistestmethodappliestomostnonwovenfabricsincludingthosethataretreatedoruntreated,includingthoseheavilysized,coatedorresintreated,providedthatduringthetest,thefabricdoesnottearinthedirectioncrosswisetothedirectionoftheforceapplied.Thistestmethodmaynotbeusefulforhighloftnonwovenfabrics.Ifthetearisnotsubstantiallylengthwise,thefabricshallbedescribedasuntearableinthatdirectionbythistest.1.3Tonguetearstrengthasmeasuredinthismethodisthemaximumsingle-peakforcerequiredtocontinueorpropagateatearstartedpreviouslyinthespecimen.Thereportedvalueincludesthesimultaneousforcerequiredtoshiftfibers,breakfibers,breakfiberbondsandbreakfiberinterlocksinnon-wovenfabric.Thereportedvalueisnotdirectlyrelatedtotheforcerequiredtoinitiateorstartatear.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesmaybeapproximate.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofth...
