Designation:D2659−11StandardTestMethodforColumnCrushPropertiesofBlownThermoplasticContainers1ThisstandardisissuedunderthefixeddesignationD2659;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthedeterminationofmechanicalpropertiesofblownthermoplasticcontainers,whetherblowncommerciallyorinthelaboratory,loadedundercolumnarcrushconditionsataconstantrateofcompressivedeflection.NOTE1—Althoughthistestmethodwasdevelopedspecificallyforblow-moldedcontainers,thegeneralprocedurecanalsobeappliedtocontainersofsuitablegeometriesproducedbyothermeans,forexample,thermoforming,injectionmolding,etc.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.NOTE2—ThereisnoknownISOequivalenttothisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D618PracticeforConditioningPlasticsforTestingD4976SpecificationforPolyethylenePlasticsMoldingandExtrusionMaterialsE4PracticesforForceVerificationofTestingMachinesE83PracticeforVerificationandClassificationofExten-someterSystems3.Terminology3.1Definitions:3.1.1crushingyieldload—thefirstloadatwhichanin-creaseofdeflectionoccurswithnoincreaseinloadinacompressivecrushingtest(expressedinunitsofkilograms(orpounds)ofload).NOTE3—Insomecases,usuallyasaresultofdesignorstylingfeatures,orboth,ofaspecificcontainer,multiplevaluesofthecrushingyieldloadarebeobserved,thatis,asmalldeflectionoccurswithnoincreaseorwithadecreaseinthecrushload,followedbyresumptionofthenormalcrushloadchangewithdeflection.Thisphenomenoncannotbeignoredintheevaluationofthecolumncrushpropertiesofablownthermoplastic...
