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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】:ASTMD3981-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D20.19
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:塑料;密度;包装件;聚乙烯;箔
【英文主题词】:film;generaluse;medium-density;packaging;polyethylene;recycled;
【摘要】:1.1Thisspecificationcoversunpigmented,unsupported,sheetortubular,medium-densitypolyethylenefilms(here-afterreferredtoasfilmorfilms)fromresinshavingdensitiesintherangefrom926.0to938.0kg/m179;(0.926to0.938g/cm179;),inclusive,asmeasuredonmoldedplaques.1.2Thisspecificationisapplicabletohomopolymerpolyethylenebutisnotrestrictedtoit.1.3Thisspecificationisalsoapplicabletofilmsmadefromcopolymerpolyethylenecommonlyreferredtoinindustryaslow-pressurepolyethylene.1.4Thisspecificationisalsoapplicabletofilmsmadefromblendsofhomopolymersandcopolymers,includingethylene/vinyl-acetatecopolymers.1.5Thisspecificationallowsfortheuseofrecycledpolyethylenefilmorresinasfeedstock,inwholeorinpart,aslongasalltherequirementsofthisspecificationaremetandaslongasanyspecificrequirementsasgovernedbytheproducerandenduserarealsomet(seeNote1).Note18212;GuideD5033containsterminologyanddefinitionsrelatingtorecycledplastics.1.6Specialcaremustbeexercisedifthisspecificationisappliedtocoloredorpigmentedfilms.Thisspecificationdoesnotaddressspecificproblemsassociatedwithcoloring,suchas,quantityandqualityofpigmentdispersion,opticalproperties,andincreaseindensity.Theseandotherareasmustbetakenintoaccountbymutualagreementbetweenthesupplierandthepurchaser.1.7Thethicknessofthefilmscoveredbythisspecificationrangefrom25to100m[0.001to0.004in.],inclusive.Themaximumwidthofthesheetorlay-flatis3.05m[120in.].1.8Thisspecificationdoesnotcoverorientedheat-shrinkablefilms.1.9Thisspecificationdefinesthelevelsofvariousphysicalpropertiesfromwhichspecificationsforspecificfilmsaretobedescribed.ThelevelsofphysicalpropertiesrequiredbyafilmforagivenapplicationareselectedfromSectionandthecorrespondingtables.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.Thevaluesinbracketsaregivenforinformationonly.1.12Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section10,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note28212;ThereisnoknownISOequivalenttothisstandard.
【中国标准分类号】:G33
【国际标准分类号】:55_040
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:Paperandboard-Determinationofopacity(paperbacking)-Diffusereflectancemethod
【原文标准名称】:纸和纸板.不透明度(纸板背衬)的测定.漫反射法
【标准号】:BSISO2471-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2009-11-30
【实施或试行日期】:2009-11-30
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:纸板;定义;漫反射;数学计算;不透明度;光学试验;纸;特性;反射率;反射比因数;反射系数的测量;反射;抽样方法;试验报告;测试
【英文主题词】:Board(paper);Definitions;Diffusereflection;Mathematicalcalculations;Opacity;Opticaltests;Paper;Properties;Reflectance;Reflectancefactor;Reflectancemeasurement;Reflection;Samplingmethods;Testreports;Testing
【摘要】:
【中国标准分类号】:Y30
【国际标准分类号】:85_060
【页数】:20P;A4
【正文语种】:英语