Designation:F2029−08StandardPracticesforMakingHeatsealsforDeterminationofHeatsealabilityofFlexibleWebsasMeasuredbySealStrength1ThisstandardisissuedunderthefixeddesignationF2029;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thesepracticescoverlaboratorypreparationofheat-sealsandthetreatmentandevaluationofheatsealstrengthdataforthepurposeofdeterminingheatsealabilityofflexiblebarriermaterials.Itdoesnotcovertherequiredvalidationprocedureforthematerialsandproductionequipment.1.2Testingstrengthorotherpropertiesoftheheatsealsformedbythesepracticesisnotincludedinthisstandard.RefertoTestMethodF88fortestingheatsealstrength.1.3Thepracticesofthisstandardarerestrictedtosealingwithamachineemployinghot-barjaw(s).Impulse,high-frequency,andultrasonicheatingmethodsarenotincluded.1.4Thesepracticesapplyprimarilytowebsintendedtobeusedoncommercialmachinesemployingreciprocatingsealingjaws,suchasmostform-fill-sealpackagingmachines,platenheatsealers,andsoforth.Conditionsofdwelltimeandsealingpressureonmachinesofthistypetypicallyaredifferentfromthoseonrotarymachines.1.5Theprocedureofthispracticewithrespecttochoiceofheatsealingconditionsapplytoultimatesealstrengthorhottackmeasurement.1.6Sealsmaybemadebetweenwebsofthesameordissimilarmaterials.Theindividualwebsmaybehomoge-neousinstructureormultilayered(coextruded,coated,laminated,andsoforth).1.7StrengthoftheheatsealasmeasuredbyTestMethodF88isthecriterionforjudgingheatsealabilityemployedinthesepractices.1.8Determinationofheatsealabilityasjudgedbysealcontinuity,typicallymeasuredbyair-leak,dyepenetration,visualexamination,microorganismpenetration,orothertechniques,arenotcoveredbythesepractices.1.9ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.10Thisstandarddoesnotpurporttoad...
