ASTM_D_3676_-_13.pdf

Designation:D367613Standard 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,rugs,or various substrates for use as separateunderlay.It is also acceptable to use this standard as aspecification for separately blown sponge used as carpetunderlay.1.2 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.NOTE1This 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,andFF2-70,Standard for the Surface Flammability of Small Carpets andRugs,2may be applicable for carpets and rugs with integral backing ofrubber cellular cushion.1.3 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 and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE2There is no known ISO equivalent to this standard.2.Referenced Documents2.1 ASTM Standards:3D395 Test Methods for Rubber PropertyCompression SetD573 Test Method for RubberDeterioration in an AirOvenD751 Test Methods for Coated FabricsD1056 Specification for Flexible Cellular MaterialsSponge or Expanded RubberD3574 Test Methods for Flexible Cellular MaterialsSlab,Bonded,and Molded Urethane FoamsD3767 Practice for RubberMeasurement of Dimensions2.2 Federal Standard:Fed.Std.No.191 Textile Test Methods,Method 5100Breaking Strength and Elongation of Woven Cloth;GrabMethod43.Significance and Use3.1 The purpose of this specification is to provide meaning-ful tests for rubber cellular cushion used for carpet or rugunderlay.4.Classification4.1 The following classes of flexible,cellular,high-densityrubber adhered to carpets,rugs,and separate substrates arecovered.4.1.1 Class A,for moderate traffic use within one and twofamily,multi-family,and care-type dwelling units.Moderatetraffic areas are areas such as living rooms,dining rooms,bedrooms,and recreation rooms.4.1.2 Class B,for heavy traffic use for public areas such aslobbies and corridors of multifamily and care-type facilities;entrances,stairways,and elevators.5.Physical Requirements5.1 The material shall conform to the requirements forphysical properties prescribed in Table 1.6.Sampling and Sample Preparation6.1 Select representative samples of the lot being examinedat random as required.6.2 Each sample shall consist of a 200 6 10-mm wide striptaken across the full width of the finished rug,carpet,orunderlayment,or other substrate.For narrow products such asrunners,it will occasionally be necessary to use a strip 300 mmor more to furnish all the test specimens.If the product is nothomogeneous across the full width,reject the sample andobtain another sample.Prior to cutting,read the samplerequirements so as to plan the cutting pattern properly.1This 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 April 15,2013.Published April 2013.Originallyapproved in 1978.Last previous edition approved in 2007 as D3676-01.DOI:10.1520/D3676-13.2Code of Federal Regulations,Vol 16,Chapter II,Parts 1630 and 1632.3For 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 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 States1 6.3 Mark off 150 mm from the outer edges of the sampleand cut all specimens from inside these lines.Divide this insidewidth into three approximately equal parts.After cutting thespecimens,identify the originating area on the foam side.6.4 Cut three 50 6 1 mm by 150 6 3-mm specimens fromthe sample,one from each side area and one from the center.Cut the long dimension parallel to the warp threads of thecarpet or rug,if applicable.6.5 Die-cut six 100 6 2 mm by 100 6 2-mm specimens,two from each side area and two from the center.Die-cut thespecimens with the