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【英文标准名称】:StandardSpecificationforPolyethyleneFilmsMadefromMedium-DensityPolyethyleneforGeneralUseandPackagingApplications
【原文标准名称】:一般用途及包装用中等密度聚乙烯制成的聚乙烯薄膜的标准规范
【标准号】:ASTMD3981-2009a
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D20.19
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:
【英文主题词】:film;generaluse;medium-density;packaging;polyethylene;recycled;Packing/packagingmaterials/systems(plastics);Plasticsheetandfilm--specifications;Polyethylene(PE)sheetandfilm--specifications;Packing/packagingmaterials/systems--speci
【摘要】:1.1Thisspecificationcoversunpigmented,unsupported,sheetortubular,medium-densitypolyethylenefilms(hereafterreferredtoasfilmorfilms)fromresinshavingdensitiesintherangefrom926.0to938.0kg/m3(0.926to0.938g/cm3),inclusive,asmeasuredonmoldedplaques.1.2Thisspecificationisapplicabletohomopolymerpolyethylenebutisnotrestrictedtoit.1.3Thisspecificationisalsoapplicabletofilmsmadefromcopolymerpolyethylenecommonlyreferredtoinindustryaslow-pressurepolyethylene.1.4Thisspecificationisalsoapplicabletofilmsmadefromblendsofhomopolymersandcopolymers,includingethylene/vinyl-acetatecopolymers.1.5Thisspecificationallowsfortheuseofrecycledpolyethylenefilmorresinasfeedstock,inwholeorinpart,aslongasalltherequirementsofthisspecificationaremetandaslongasanyspecificrequirementsasgovernedbytheproducerandenduserarealsomet(seeNote1).Note18212;GuideD7209containsterminologyanddefinitionsrelatingtorecycledplastics.1.6Specialcaremustbeexercisedifthisspecificationisappliedtocoloredorpigmentedfilms.Thisspecificationdoesnotaddressspecificproblemsassociatedwithcoloring,suchas,quantityandqualityofpigmentdispersion,opticalproperties,andincreaseindensity.Theseandotherareasmustbetakenintoaccountbymutualagreementbetweenthesupplierandthepurchaser.1.7Thethicknessofthefilmscoveredbythisspecificationrangefrom25to100x03BC;m(0.001to0.004in.),inclusive.Themaximumwidthofthesheetorlay-flatis3.05m(120in.).1.8Thisspecificationdoesnotcoverorientedheat-shrinkablefilms.1.9Thisspecificationdefinesthelevelsofvariousphysicalpropertiesfromwhichspecificationsforspecificfilmsaretobedescribed.ThelevelsofphysicalpropertiesrequiredbyafilmforagivenapplicationareselectedfromSection6andthecorrespondingtables.However,Sections7.2-7.5relatingtotolerancesshallapplywithoutchangetoallfilmfallingwithinthescopeindicatedbythetitleand1.1-1.4.1.10Thisspecificationcoversdimensionaltolerances,classification,intrinsicqualityrequirements,andtestmethods.Thedimensionaltolerancesincludethickness,width,andlengthoryield.Classificationdefinestypes,classes,surfaces,andfinishes.Theintrinsicqualityrequirementsincludedensity,workmanship,impactstrength,tensilestrength,heatsealability,andodor,aswellastheclassificationpropertiesforstiffness,coefficientoffriction,opticalproperties,andsurfacetreatment.Asamplingmethodisincluded.1.11ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesinparenthesesaregivenforinformationonly.1.12Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section10,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note28212;ThereisnoknownISOequivalenttothisstandard.
【中国标准分类号】:A82
【国际标准分类号】:55_040
【页数】:5P.;A4
【正文语种】:英语