Designation:D6548–00(Reapproved2005)AnAmericanNationalStandardStandardTestMethodforResistancetoMechanicalPenetrationofSanitaryTissuePapers(BallBurstProcedure)1ThisstandardisissuedunderthefixeddesignationD6548;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesthemeasurementoftheresistancetomechanicalpenetrationofsanitarytissuepapers.Applicationtootherpapertypesispossiblebutisnotcoveredhere.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D585PracticeforSamplingandAcceptingaSingleLotofPaper,Paperboard,Fiberboard,andRelatedProductsD685PracticeforConditioningPaperandPaperProductsforTestingD774/D774MTestMethodforBurstingStrengthofPaperD1968TerminologyRelatingtoPaperandPaperProductsD4826PracticeforUnitsofMeasurementandConversionFactorsforPulp,Paper,andPaperboardE4PracticesforForceVerificationofTestingMachinesE122PracticeforChoiceofSampleSizetoEstimate,WithaSpecifiedTolerableError,theAverageCharacteristicofaLotorProcess3.Terminology3.1Definitions—Fordefinitionsoftermsusedinthistestmethod,refertoTerminologyD1968ortheDictionaryofPaper.34.SummaryofTestMethod4.1Inthistestmethod,atestspecimenisclampedbetweentwoconcentricringswhoseinnerdiameterdefinesthecircularareaundertest.Apenetrationassemblythetopofwhichisasmooth,sphericalsteelballisarrangedperpendiculartoandcenteredundertheringsholdingthetestspecimen.Thepenetrationassemblyisraisedataspecifiedconstantrateofspeedsuchthatthesteelballcontactsandeventuallypenetratesthetestspecimentothepointofspecimenrupture.Themaximumforceappliedbythepenetrationassemblyattheinst...
