1、Designation: D4801 08 (Reapproved 2016)Standard Specification forPolyethylene Sheeting in Thickness of 0.25 mm (0.010 in.)and Greater1This standard is issued under the fixed designation D4801; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、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.This standard has been approved for use by agencies of the U.S. Department of Defense.1. Scope1.1 This speci
3、fication covers requirements for extruded(cast or blown) and compression-molded sheeting made fromlow-, medium- and high-density polyethylenes and copolymersin thickness of 0.25 mm (0.010 in.) and greater. Depending onthe functional requirements, sheeting conforming to this speci-fication is used in
4、 applications such as chemical tank linings,spacers in electrical equipment, thermoforming into such itemsas trays, pallets, and shipping containers, and as machine-shopstock.1.2 Polyethylene materials, being thermoplastics, are repro-cessable and recyclable (see Guides D5033 and D7209). Thisspecifi
5、cation allows for the use of those polyethylene plasticmaterials, provided that any specific requirements as governedby the producer and end user are met.1.3 The values stated in SI units are to be regarded asstandard. The values given in parentheses are for informationonly.1.4 The following precaut
6、ionary caveat pertains only to thetest methods portion, Section 11, of this specification: Thisstandard does not purport to address all of the safety concerns,if any, associated with its use. It is the responsibility of the userof this standard to establish appropriate safety and healthpractices and
7、 determine the applicability of regulatory limita-tions prior to use.NOTE 1There is no known ISO equivalent to this standard.2. Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD638 Test Method for Tensile Properties of PlasticsD792 Test Methods for Density
8、and Specific Gravity (Rela-tive Density) of Plastics by DisplacementD883 Terminology Relating to PlasticsD1204 Test Method for Linear Dimensional Changes ofNonrigid Thermoplastic Sheeting or Film at ElevatedTemperatureD1505 Test Method for Density of Plastics by the Density-Gradient TechniqueD2103 S
9、pecification for Polyethylene Film and SheetingD3892 Practice for Packaging/Packing of PlasticsD4976 Specification for Polyethylene Plastics Molding andExtrusion MaterialsD5033 Guide for Development ofASTM Standards Relatingto Recycling and Use of Recycled Plastics (Withdrawn2007)3D5947 Test Methods
10、 for Physical Dimensions of SolidPlastics SpecimensD7209 Guide for Waste Reduction, Resource Recovery, andUse of Recycled Polymeric Materials and Products (With-drawn 2015)32.2 Military Standard:4MIL-STD-105 Sampling Procedures and Tables for Inspec-tion by Attributes2.3 Federal Standard:4Fed. Std.
11、No. 406A Plastics: Methods of Testing(Method 6051, Warpage)3. Terminology3.1 DefinitionsUnless otherwise indicated, the terminol-ogy used in this specification is in accordance with Terminol-ogy D883.4. Classification4.1 The polyethylene sheeting in accordance with thisspecification is classified by
12、 special types as follows:1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.19 on Film, Sheeting,and Molded Products.Current edition approved Oct. 1, 2016. Published October 2016. Originallyapproved in 1988. Last previ
13、ous edition approved in 2008 as D4801 08. DOI:10.1520/D4801-08R16.2For referenced ASTM standards, 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 web
14、site.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohoc
15、ken, PA 19428-2959. United States14.1.1 Type IGeneral purpose, natural and colors.4.1.2 Type IIDielectric, natural and colors.4.1.3 Type IIIWeather-resistant, black.5. Ordering Information5.1 As appropriate, the following information shall beincluded in the purchase contract.5.1.1 Title, number, and
16、 date of this specification.5.1.2 Classification in accordance with the appropriate cellcall-out as found in Specification D4976.5.1.3 Length and width of sheets (see 7.5 and 7.6).5.1.4 Thickness of sheets (see 7.5).5.1.5 Color (see 7.7).5.1.6 Requirements for packaging, packing, and marking(see 13.
17、1).6. Materials and Manufacture6.1 MaterialsThe sheeting shall be manufactured frompolyethylene thermoplastic material of the special grade speci-fied in 5.1.2. The supplier shall furnish, for the material used,data for the classification properties.6.2 ManufactureSheeting shall be formed by extrusi
18、onand roll polishing, or compression.7. Detail Requirements7.1 FormThe sheeting shall be furnished flat or in rolls inthe dimensions specified.7.2 Tensile Stress at Yield and Nominal Strain at BreakSheeting shall conform to the values shown for the appropriatecell classification as found in Specific
19、ation D4976.7.3 ShrinkageThe sheeting, when tested as specified in11.3, shall conform to the requirements as determined betweenthe user and the supplier.7.4 Warpage and TwistThe sheeting, when tested asspecified in 11.4, shall conform to the requirements as deter-mined between the user and the suppl
20、ier.7.5 DimensionsSheeting shall be supplied in the width,length (or weight), and thickness as specified between the userand the supplier, except that is permissible for a maximum of4 % of the sheet in a shipment to be trimmed 55-mm (2-in.)undersize or half-size. Such trimmed sheet shall be packedse
21、parately from full-sized sheet. The thickness shall be testedin accordance with 11.5. Thickness tolerances are shown inTable 1.7.6 Length or Weight and Diameter of RollsSheeting inrolls shall be supplied with either the length or weightspecified, except that one roll in a shipment shall be permitted
22、to have the lesser length or weight required to make the totallength or weight of the shipment equal to the quantity ordered.Specify the diameter of the roll.7.7 ColorThe sheeting shall be of the color specified bythe user.7.8 GradeThe sheeting shall be of the grade specified bythe user.7.9 Workmans
23、hipThe sheeting shall have a smooth finishand shall be free of cracks, blisters, bubbles, discolorations,craze, surface scratches that form definite indentations, andother defects that could affect appearance or serviceability.7.9.1 Dimensional DefectsThe sheeting shall show noneof the defects descr
24、ibed in Table 2.7.9.2 Defects in Color, Appearance, and WorkmanshipThe sheeting shall show none of the defects described in Table3.8. Sampling8.1 The materials shall be sampled in accordance with thesampling procedure prescribed in Practice D1898. Adequatestatistical sampling shall be considered an
25、acceptable alterna-tive. A lot of material shall be considered as a unit ofmanufacture as prepared for shipment, and shall be permittedto consist of a blend of two or more production runs or batches.9. Testing9.1 Test the sheeting for the applicable characteristics listedin 7.2, 7.3, and 7.4 and Tab
26、le 1 and Table 2 in accordance withthe test methods specified herein, for each lot submitted forinspection.10. Conditioning10.1 Condition the test specimens at 23 6 2C (73.4 63.6F) for not less than 40 h prior to test in accordance withSpecification D4976 or as otherwise specified by agreement. Inca
27、ses of disagreement, the tolerances shall be 61C (61.8F).10.2 In addition, for films containing hydrophilic fillers,co-monomers, pigments or other modifiers, conditioning andtesting shall be done at 50 6 10 % relative humidity. In casesof disagreement, the tolerance shall be 65 % relative humidity.T
28、ABLE 1 Thickness TolerancesNominal Thickness, mm (in.)Thickness Tolerance,Percent of Nominal0.254 to 1.78 (0.010 to 0.070), incl 10Greater than 1.78 (0.070) 5TABLE 2 Examination of the Sheeting for Defects in DimensionsExamine DefectsLength and width (sheet) not of the length and width specifiedvari
29、es by more than +3.2, 0 mm(+18,0in.)varies by more than 13 mm (12 in.)from true rectanglesWidth (sheeting) not of the width specifiedvaries by more than +13, 0 mm(+12,0in.)Length or weight of rolls(sheeting)not of the length or weight specifiedvaries by more than +3, 1 %Diameter of rolls (sheeting)
30、not of the diameter specifiedCores (sheeting) not having lengths equal to the nominalwidth of the sheeting, +13, 0 mm(+12,0in.)not having inside diameters as specifiedvaries by more than +3.2, 0 mm(+18, 0 in.) for a 76-mm (3-in.) diameterhole unless otherwise specifiedD4801 08 (2016)211. Test Method
31、s11.1 Conduct the tests at 23 6 2C (73.4 6 3.6F) inaccordance with Specification D4976 or as otherwise specifiedby agreement. In cases of disagreement, the tolerances shall be6 1C (61.8F)11.2 Tensile Stress at Yield and Nominal Strain at BreakTest in accordance with Test Method D638. Determine tensi
32、lestress at yield and nominal strain at break.11.2.1 Test SpecimensPrepare test specimens by die cut-ting or machining. In extruded sheet, properties are dependenton the sampling direction; therefore, test specimens shall be cutand tested in the extrusion direction or in both the extrusionand transv
33、erse directions if agreed upon between the supplierand the user.11.3 ShrinkageTest in accordance with Test MethodD1204, using a minimum oven time of 30 min, and an oventemperature of 130 6 2C (266 6 3.6F) for Group 1 and 2,Classes 1 and 2 Polyethylene (Specification D4976) and of 1406 2C (284 6 3.6F
34、) for Group 2, Classes 3 and 4 Polyeth-ylene (Specification D4976). If previous tests on the samegrade and nominal thickness of sheeting have shown that theuse of talc or paper is unnecessary to provide free shrinkage,these refinements can be omitted.11.4 Warpage and TwistDetermine warpage or twist
35、usingtwo sheets tested in accordance with Method 6051 of Fed. Std.No. 406A except for the following: a straightedge 1-m (36-in.)long shall be used. Move the straightedge over the sheet androtate it along the sheet length about an axis perpendicular tothe plane of the sheet without permitting an end
36、of thestraightedge to extend beyond the edge of the sheet. Measureand report the maximum distance from the sheet to thestraightedge. Make the measurement with the sheet lying withits surface of maximum convexity in contact with a horizontalflat surface. The straightedge shall be light in weight and
37、nopressure shall be exerted on it that might tend to reduce thewarpage or twist during the measurement.11.4.1 CalculationCalculate the warpage or twist as fol-lows:W 5D 3100L(1)where:W = warpage or twist, %D = maximum deviation, mm (in.), andL = length of the sheet along the straightedge, mm (in.)11
38、.4.2 PrecisionNo data are available for a precisionstatement.11.5 ThicknessThe thickness of the sheeting covered inthis specification shall meet the tolerances given in Table 1when tested as follows: Determine the thickness by the methoddescribed in 11.5.1 11.5.4. In cases of disagreement use theArb
39、itration Method given in the test method section of Speci-fication D2103.11.5.1 Because of the wide range of materials included inthe scope of this specification it is not possible to specify auniversal instrument geometry or method. The selection of aspecific method and instrument for measurement i
40、s influencedby the characteristics of the material and needs to be consid-ered by the user of this specification.11.5.2 ApparatusAn instrument as described in TestMethod D5947 that is suitable for the material and specimengeometry being tested.11.5.3 Test SpecimensPrepare test specimens, approxi-mat
41、ely 5 by 5 cm (2 by 2 in.) in area, taken randomly across thewidth of the roll. Take at least one set of test specimens fromeach roll being tested. In the case of sheet stock, a statisticallyvalid sampling plan shall be used. Five specimens are recom-mended for sheeting of widths of five feet or les
42、s and tenspecimens are recommended for sheeting greater than five feetin width.NOTE 2Care must be taken in choosing the size of the specimen inrelation to the anvil to assure that the weight of the specimen overhangingthe anvil does not overcome the weight applied to the presser foot, whichwill resu
43、lt in erroneous readings. If it is necessary to use a largerspecimen, a heavier weight should be used.11.5.4 ProcedureA procedure, suitable for the materialand specimen geometry being tested, as described in TestMethod D5947 shall be used. The surfaces of the anvil, thepresser foot spindle, and the
44、specimens shall be clean and dry.Take one measurement on each specimen. Average the mea-surements of all the specimens of a sample to obtain thethickness of the sample.12. Certification and Inspection12.1 Certification and lot acceptance of the material shall beagreed upon between the supplier and t
45、he user, or as a part ofthe purchase contract.12.2 Periodic check inspection shall consist of the testsagreed upon between the supplier and the user.12.3 A report of the test results shall be furnished at afrequency agreed upon between the supplier and the user whenspecified in a purchase order or c
46、ontract.13. Packaging, Packing, and Marking13.1 Provisions of Practice D3892 apply for packaging,packing, and marking of plastic materials.14. Keywords14.1 dielectric sheet; general purpose sheet; polyethylene;recycled plastics; sheeting; sheeting specification; thick gage;thick sheet; thickness 25
47、mil; weather-resistant sheetTABLE 3 Examination of Sheeting for Defects in Color,Appearance, and WorkmanshipExamine DefectsAppearance not uniform texture, finish, or colorany pits, blisters, cracks, dents, waviness, heat marks,or scratchesWorkmanship surface not polished and straightedges not smooth
48、 and straightany delaminations or porosity on edgesD4801 08 (2016)3SUPPLEMENTARY REQUIREMENTSS1. QUALITY ASSURANCE PROVISIONS FOR GOVERNMENT/MILITARY PROCUREMENTThese requirements apply only to Federal/Military procurement, not domestic sales or transfers.S1.1 Unless otherwise specified in a purchas
49、e order orcontact, sampling for inspection and testing shall be in accor-dance with the recommendations of Practice D1898.S1.2 Selection of Acceptable Quality Level (AQL) and ofInspection Level (IL) shall be made, with consideration of thespecific use requirements. This is discussed in Practice D1898in the sections “Means and Standard Deviations,” and “Com-parison of Sampling Plans,” with reference to MIL-STD-105.S1.3 In the absence of contrary requirements, the followingvalues shall apply:IL AQLDefects in material and w
