ASTM_D_378_-_10.pdf

Designation:D37810Standard Test Methods forRubber(Elastomeric)Conveyor Belting,Flat Type1This standard is issued under the fixed designation D378;the number immediately following the designation indicates the year oforiginal adoption or,in the case 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.Scope1.1 These test methods(and references)cover the proce-dures for evaluating the physical properties of flat conveyorbelting.Performance criteria for belting will not be detailedhere,but can be found through the RMA(Rubber Manufactur-ers Association)Conveyor and Elevator Belt Handbook,ANSI(American National Standards Institute),various governmentalauthorities,and the International Organization for Standardiza-tion(ISO).Belting for conveying and elevating materialsgenerally is designated and defined as follows:1.1.1 Heavy Duty ConveyorA heavy duty belt is definedas belting designed for bulk haulage of materials,such as stone,crushed rock,sand,metals ores,coal,wood chips,etc.,and hasa carcass strength(design)substantial enough to withstandconveyor system tensions of 160 PIW2(pounds per inch ofwidth)and above.1.1.2 Light Duty ConveyorA light duty belt is defined asbelting designed for conveying a variety of lower weight(density)materials,packages,industrial and electronic goods,and food products.These belts often are shorter in length andwidth,with less overall thickness than heavy duty belting,andare generally used in conveyor systems with tensions less than160 PIW.1.1.3 General DescriptionBelting can have elastomericcoverings on one side,both sides,or neither side dependingupon the specific application requirements.Belt coverings arecomprised of various synthetic or natural rubber polymers,PVC,or other elastomeric materials,dependent upon applica-tion or customer requirements.The strength(load bearing)member(s)of most belting generally is a woven or interwovencarcass of synthetic or natural fibers,such as,but not limited to,polyester,nylon,polyaramide and cotton,as well as steel(cable/cord type or woven mesh).1.2 This standard does not purport to address all of theapplication specific testing available or safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations priorto use.2.Referenced Documents2.1 ASTM Standards:3D412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD413 Test Methods for Rubber PropertyAdhesion to Flex-ible SubstrateD471 Test Method for Rubber PropertyEffect of LiquidsD573 Test Method for RubberDeterioration in an AirOvenD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermoplastic ElastomersD865 Test Method for RubberDeterioration by Heating inAir(Test Tube Enclosure)D1149 Test Methods for Rubber DeteriorationCracking inan Ozone Controlled EnvironmentD1415 Test Method for Rubber PropertyInternationalHardnessD1894 Test Method for Static and Kinetic Coefficients ofFriction of Plastic Film and SheetingD2240 Test Method for Rubber PropertyDurometer Hard-nessD3183 Practice for RubberPreparation of Pieces for TestPurposes from ProductsD3767 Practice for RubberMeasurement of DimensionsD4483 Practice for Evaluating Precision for Test MethodStandards in the Rubber and Carbon Black ManufacturingIndustriesD5963 Test Method for Rubber PropertyAbrasion Resis-tance(Rotary Drum Abrader)2.2 ISO Standards:4ISO 282 Conveyor BeltsSamplingISO 283 Textile Conveyor BeltsFull Thickness TensileStrength,Elongation at Break and Elongation at theReference LoadTest Method1These test methods are under the jurisdiction of ASTM Committee D11 onRubber and are the direct responsibility of Subcommittee D11.31 on Rubber Hoseand Belting.Current edition approved Oct.1,2010.Published November 2010.Originallyapproved in 1991.Last previous edition approved in 2008 as D378 00(2008).DOI:10.1520/D0378-10.2PIW is not an SI unit.3For 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 website.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 ISO284 ConveyorBeltsElectricalConductivitySpecification and Test MethodISO 340 Conveyor BeltsLaboratory Scale FlammabilityCharacteristicsRequirements and Test MethodISO 505 Conveyor BeltsMethod for the Determination ofthe Tear Propagation Resistance of Textile Conveyor BeltsISO 4649 RubberDetermination of Abrasion ResistanceUsing a Rotating Cylindrical Drum DeviceISO 7590 Steel Cord Conveyor BeltsMethods for theDetermina