ASTMD25977075’75300026195b______7($\b&-&ANSVASTMD259-77StandardSpecificationforWOVENTAPES’ThisStandardisissuedunderthefixeddesignationD259;thenumberimmediatelyfollowingfhedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.1.Scope1.1Thisspecificationcoverswoventapesmadefromsyntheticornaturalfibers,orboth.1.2Thisspecificationcoversthosewoventapeshavingamaximumthicknessupto0.020in.(0.50mm)withpermissiblelistedtolerances.NOTE-ThevaluesstatedinU.S.customaryunitsaretoberegardedasthestandard.2.ApplicableDocuments2.1ASTMStandards:D76SpecificationforTensileTestingMa-chinesforTextiles”D123DefinitionsofTermsRelatingtoTextiles2,D629QuantitativeAnalysisofTextiles3D1682TestsforBreakingLoadandEIon-D1777MeasuringThicknessofTextileD1910TestsforConstructionCharacterís-gationofTextileFabrics2Materials2ticsofWovenFabrics23.Defimitions3.1Fordefinitionsoftextiletermsusedinthisspecification,refertoDefinitionsD123.4.Tolerances4.1YardsPerPound-Theaveragelengthperunitweightofthetapeinyardsperpoundshallnotbelessthanthespecifiedvalue.4.2Wfdth-Theaveragewidthofthetapeshallnotvaryfromthatspecifiedbymorethanthefollowing:Permissiblevariations,in.Nominalwidth,in.(mm)(mm)LessthanI(25)1to1%(25to38)Zk‘/32(0.80)k’I64(1.20)over1%(38)ti&/i6(1.60)4.3Thickness:4.3.1Theaveragethicknessofthetapeshallnotvaryfromthatspecifiedbymorethanthefollowing:Permissiblevariations,Nominalthickness,in.(mm)in.(mm)0.011(0.30)andunderf0.0015(0.040)Over0.011to0.020(0.30tof0.002(0.050)0.50)4.3.2Individualthicknessmeasurementsshallnotvaryfromthenominalthicknessspecifiedbymorethanthefollowing:Permissiblevariations,in.(mm)50.002(0.050)f0.004(0.100)Nominalthickness,in.(mm)0.011(0.30)and,underOver0.011to0.020(0.30to0.50)4.4Construction:4.4.1Thetotalnumberofendsshallnotbe4.4.2Thepicksperinchshallnotvarybylessthanspecified.morethanthefollowing:Permissiblevari-f1pick22picksPickcountations48periin.(25mm)andunderOver48per1in.(25mm)4.5Brea...
