ASTM_D_3676_-_18.pdf

Designation:D367618Standard Specification forRubber Cellular Cushion Used for Carpet or Rug Underlay1This standard is issued under the fixed designation D3676;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.Scope*1.1 This specification covers high-density cellular rubberadhered to carpet and rugs.This specification can also beapplied to various substrates,such as blown sponge rubber,used independently as carpet underlay.1.2 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.NOTE1There is no known ISO equivalent to this standard.1.3 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D395 Test Methods for Rubber PropertyCompression SetD573 Test Method for RubberDeterioration in an AirOvenD751 Test Methods for Coated FabricsD883 Terminology Relating to PlasticsD1056 Specification for Flexible Cellular MaterialsSponge or Expanded RubberD3574 Test Methods for Flexible Cellular MaterialsSlab,Bonded,and Molded Urethane FoamsD3767 Practice for RubberMeasurement of DimensionsD6576 Specification for Flexible Cellular Rubber Chemi-cally Blown2.2 Federal Standard:Fed.Std.No.191 Textile Test Methods,Method 5100Breaking Strength and Elongation of Woven Cloth;GrabMethod33.Terminology3.1 DefinitionsFor definitions used in this test method,refer to Terminology D883.3.2 Definitions of Terms Specific to This Standard:3.2.1 rubbera material that is capable of recovering fromlarge deformations quickly and forcibly,and can be,or alreadyis,modified to a state in which it is essentially insoluble(butcan swell)in boiling solvent(such as benzene,methyl ethylketone,and ethanol-toluene azeotrope).3.2.2 cellular materiala generic term for materials con-taining many cells(either open or closed,or both)dispersedthroughout the mass.3.2.3 flexible cellular materiala flexible cellular organicpolymeric material that will not rupture within 60 s when aspecimen 8 by 1 in.(200 by 25 by 25 mm)is bent around a1-in.(25-mm)diameter mandrel at a uniform rate of 1 lap/5 sin the form of a helix at a temperature between 65 and 85F(18and 29C).3.2.4 open cella product whose cells are not totallyenclosed by its walls and open to the surface,either directly orby interconnecting with other cells.3.2.5 closed cella product whose cells are totally enclosedby its walls and hence not interconnecting with other cells.3.2.6 sponge rubbercellular rubber consisting predomi-nantly of open cells made from a solid rubber compound.4.Summary of Test Method4.1 This specification provides material and dimensionalrequirements and test methods for specific properties of com-pression set,compression resistance or compression forcedeflection,delamination strength,and accelerated aging.NOTE2This specification does not include requirements for burningcharacteristics.It shall be noted that Flammable Fabrics Act RegulationsFF1-70,Standard for the Surface Flammability of Carpets and Rugs,and1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.22 on CellularMaterials-Plastics and Elastomers.Current edition approved Aug.1,2018.Published August 2018.Originallyapproved in 1978.Last previous edition approved in 2013 as D3676-13.DOI:10.1520/D3676-18.2For 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 website.3Available from Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 191115094,Attn:NPODS.*A Summary 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 FF2-70,Standard for the Surface Flammability of Small Carpets andRugs,4 shall be applicable for carpets and rugs with integral backing ofrubber cellular