【英文标准名称】:StandardSpecificationforPolyethyleneFilmsMadefromLow-DensityPolyethyleneforGeneralUseandPackagingApplications
【原文标准名称】:通用和包装用低密度聚乙烯薄膜标准规范
【标准号】:ASTMD4635-2008a
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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;low-density;packaging;polyethylene;recycledplastics;Copolymers;Density--plastics;Homopolymers;LLDPE(linearlowdensitypolyethylene)--specifications;Packing/packagingmaterials/systems--specifications;Packing/packagingm
【摘要】:1.1Thisspecificationcoversunpigmented,unsupported,low-densitypolyethylenefilms(hereafterreferredtoasfilmorfilms)fromClass1polyethylenesperSpecificationD4976.Note18212;Thedensityofafilmwillnotnecessarilybeequaltothedensityofamoldedplaquefromthesameresin.Note28212;Blendsofethylene/vinylacetate(EVA)withlow-densitypolyethylenemayhavedensitiesupto0.929g/cm3.1.2Thisspecificationisapplicabletohomopolymerpolyethylene,butisnotrestrictedtoit.Itisapplicabletofilmsmadefrompolyethylenecopolymers,andalsoapplicabletofilmsmadefromblendsofhomopolymersandcopolymers,includingethylene/vinylacetatecopolymers.1.3Thethicknessofthefilmscoveredbythisspecificationis100x03BC;morless(0.004in.orless),inclusive.Themaximumwidthofthesheetorlayflatis3.00m(120in.).1.4Thisspecificationdoesnotcoverorientedheat-shrinkablefilms.1.5Thisspecificationallowsfortheuseofrecycledpolyethylenefilmorresinasfeedstock,inwholeorinpart,aslongasalloftherequirementsofthisspecificationaremetandaslongasanyspecificrequirementsasgovernedbytheproducerandenduserarealsomet.(SeeNote3.)Note38212;GuideD7209describesterminologyanddefinitionsrelatedtorecycledplastics.1.6Thisspecificationdefinesthelevelsofthevariousphysicalpropertiesfromwhichspecificationsforspecificfilmsmaybedescribed.ThelevelsofphysicalpropertiesrequiredbyafilmforagivenapplicationareselectedfromSection6.However,Sections2-5relatingtotolerancesshallapplywithoutchangetoallfilmfallingwithinthescopeindicatedbythetitleand1.1-1.4.1.7Thisspecificationcoversdimensionaltolerances,classifications,intrinsicqualityrequirements,andtestmethods.Thedimensionaltolerancesincludethickness,width,andlengthoryield.Classificationdefinestypes,classes,surfaces,andfinishes.Theintrinsicqualityrequirementsincludedensity,workmanship,tensilestrength,heatsealability,andodor,aswellastheclassificationpropertiesforimpactstrength,coefficientoffriction,opticalproperties,andsurfacetreatment.Asamplingmethodisincluded.1.8ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.9Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section10,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note48212;ThereisnosimilarorequivalentISOspecification.
【中国标准分类号】:A82
【国际标准分类号】:83_140_10
【页数】:5P.;A4
【正文语种】:英语