1、Designation:D463508aStandard Specification forPolyethylene Films Made from Low-Density Polyethylene forGeneral Use and Packaging Applications1This standard is issued under the fixed designation D4635;the number immediately following the designation indicates the year oforiginal adoption or,in the ca
2、se of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers unpigmented,unsupported,low-density polyethylene films(hereafter refe
3、rred to as film orfilms)from Class 1 polyethylenes per Specification D4976.NOTE1The density of a film will not necessarily be equal to thedensity of a molded plaque from the same resin.NOTE2Blends of ethylene/vinylacetate(EVA)with low-densitypolyethylene may have densities up to 0.929 g/cm3.1.2 This
4、 specification is applicable to homopolymerpolyethylene,but is not restricted to it.It is applicable to filmsmade from polyethylene copolymers,and also applicable tofilms made from blends of homopolymers and copolymers,including ethylene/vinylacetate copolymers.1.3 The thickness of the films covered
5、 by this specificationis 100 m or less(0.004 in.or less),inclusive.The maximumwidth of the sheet or layflat is 3.00 m(120 in.).1.4 This specification does not cover oriented heat-shrinkable films.1.5 This specification allows for the use of recycled poly-ethylene film or resin as feedstock,in whole
6、or in part,as longas all of the requirements of this specification are met and aslong as any specific requirements as governed by the producerand end user are also met.(See Note 3.)NOTE3Guide D7209 describes terminology and definitions related torecycled plastics.1.6 This specification defines the l
7、evels of the variousphysical properties from which specifications for specific filmsmay be described.The levels of physical properties required bya film for a given application are selected from Section 6.However,Sections 2-5 relating to tolerances shall applywithout change to all film falling withi
8、n the scope indicated bythe title and 1.1-1.4.1.7 This specification covers dimensional tolerances,classifications,intrinsic quality requirements,and test methods.The dimensional tolerances include thickness,width,andlength or yield.Classification defines types,classes,surfaces,and finishes.The intr
9、insic quality requirements include density,workmanship,tensile strength,heat sealability,and odor,aswell as the classification properties for impact strength,coef-ficient of friction,optical properties,and surface treatment.Asampling method is included.1.8 The values stated in SI units are to be reg
10、arded as thestandard.The values given in parentheses are for informationonly.1.9 The following precautionary caveat pertains only to thetest methods portion,Section 10,of this specification:Thisstandard does not purport to address all of the safety concerns,if any,associated with its use.It is the r
11、esponsibility of the userof this standard to establish appropriate safety and healthpractices and determine the applicability of regulatory limita-tions prior to use.NOTE4There is no similar or equivalent ISO specification.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plas
12、tics for TestingD882 Test Method for Tensile Properties of Thin PlasticSheetingD883 Terminology Relating to PlasticsD1003 Test Method for Haze and Luminous Transmittanceof Transparent PlasticsD1505 Test Method for Density of Plastics by the Density-Gradient TechniqueD1709 Test Methods for Impact Res
13、istance of Plastic Filmby the Free-Falling Dart MethodD1984 Specification for Tall Oil Fatty Acids(Withdrawn1999)3D2103 Specification for Polyethylene Film and SheetingD2457 Test Method for Specular Gloss of Plastic Films andSolid Plastics1This specification is under the jurisdiction of ASTM Committ
14、ee D20 onPlastics and is the direct responsibility of Subcommittee D20.19 on Film,Sheeting,and Molded Products.Current edition approved Nov.1,2008.Published November 2008.Originallyapproved in 1986.Last previous edition approved in 2008 as D4635-08.DOI:10.1520/D4635-08A.2For referenced ASTM standard
15、s,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary
16、of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 D2578 Test Method for Wetting Tension of Polyethylene andPolypropylene FilmsD4321 Test Method for Package Yield of Plastic FilmD4703 Practice for Compression Molding ThermoplasticMaterials into Test Specimens,Plaques,or SheetsD4976 Specification for Polyethylene Plastics Molding andExtrusion MaterialsD7209 Guide for Waste Reduction,Re
