Designation:D5736–95(Reapproved2001)StandardTestMethodforThicknessofHighloftNonwovenFabrics1ThisstandardisissuedunderthefixeddesignationD5736;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(e)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesthemeasurementofthick-nessofhighloftnonwovenfabrics.Forthicknessofnonwovenfabricsotherthanhighloft,seeTestMethodD5729.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Theinch-poundunitsgiveninparenthesesmaybeapproximate.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:D123TerminologyRelatingtoTextiles2D1776PracticeforConditioningTextilesforTesting2D1777TestMethodforMeasuringThicknessofTextileMaterials2D2904PracticeforInterlaboratoryTestingofaTextileTestMethodthatProducesNormallyDistributedData3D5729TestMethodforThicknessofNonwovenFabrics33.Terminology3.1Definitions:3.1.1highloftnonwovenfabric,n—alow-densityfibernet-workstructurecharacterizedbyahighratioofthicknesstomassperunitarea.(Syn.highloft).3.1.2nonwovenfabric,n—atextilestructureproducedbybondingorinterlockingoffibers,orboth,accomplishedbymechanical,chemical,thermal,orsolventmeans,orcombina-tionthereof.3.1.3pressure,n—theforceperunitarea.3.1.3.1Discussion—Pressuremaybeexpressedinanyap-propriateorspecifiedunits,suchaspascals(Pa),newtonspersquaremetre(N/m2),orpound-forcepersquareinch(psi).3.1.4thickness,n—thedistancebetweenonesurfaceanditsopposite.3.1.4.1Discussion—Intextiles,thedistancebetweentheupperandlowersurfacesofthematerial;measuredunderaspecifiedpressure.Thicknessisusuallydeterminedasthedistancebetweenananvil,orbase,andapresserfootusedtoap...
