ASTM_D_1667_-_22.pdf

Designation:D166722Standard Specification forFlexible Cellular MaterialsPoly(Vinyl Chloride)Foam(Closed-Cell)1This standard is issued under the fixed designation D1667;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This specification covers flexible closed-cell or non-interconnecting cellular products,the elastomer content ofwhich is predominantly poly(vinyl chloride)or copolymersthereof.1.2 In the case of conflict between the provisions of thisspecification and those of detailed specifications or methods oftest for a particular product,the latter shall take precedence.1.3 Reference to the methods for testing closed-cell poly-(vinyl chloride)contained herein shall specifically state theparticular test or tests desired and not refer to these methods oftest as a whole.1.4 The values stated in SI units are to be regarded as thestandard.The inch-pound units given in parentheses are forinformation only.1.5 The following precautionary statement pertains to thetest method portions only of this specification:This standarddoes not purport to address all of the safety concerns,if any,associated with its use.It is the responsibility of the user of thisstandard to establish appropriate safety,health,and environ-mental practices and determine the applicability of regulatorylimitations prior to use.NOTE1There is no known ISO equivalent to this standard.1.6 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:2D883 Terminology Relating to PlasticsD1056 Specification for Flexible Cellular MaterialsSponge or Expanded RubberE456 Terminology Relating to Quality and StatisticsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 Terms used in this standard are defined in accordancewith Terminology D883,unless otherwise specified.For termsrelating to precision and bias and associated issues,the termsused in this standard are defined in accordance with Terminol-ogy E456.3.2 Definitions of Terms Specific to This Standard:3.2.1 flexible cellular material,na cellular polymer thatwill not visibly rupture within a specified time when aspecimen is bent around a 25.4-mm(1.0-in.)mandrel 180degrees within an agreed upon period of time and at apredetermined temperature.3.2.2 surface skin,nthe smooth surface on the materialformed during manufacture by contact with the molds,coverplate,or air.3.2.3 V,nthe ASTM symbol designating nonrigid vinylcellular plastics.3.2.4 vinyl or PVC,nthese terms refer to poly(vinylchloride)or copolymers thereof.4.Materials and Manufacture4.1 Closed-cell vinyl is produced in sheet,strip,molded,orsimple specific shapes.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 May 1,2022.Published May 2022.Originallyapproved in 1959.Last previous edition approved in 2017 as D1667-17.DOI:10.1520/D1667-22.2For 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.*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.15.Grades of Closed-Cell Vinyl or PVC-Symbol VE5.1 Closed-cell vinyl shall be designated by two symbolletters VE,indicating V for vinyl and E for closed cell.Thegrade shall be designated by two digits,the first of whichdesignates closed cell,and the second of which indicates thedegree of firmness,the softer grades being identified with thelower numbers and the firmer grades with the higher numbers.NOTE2ExamplesVE-41 is a closed cell(expanded)vinyl of softgrade(see Table 1).5.2 If suffix tests are required,suffix letters shall be addedsingly or in combination after any grade number to indicateadditional requirements beyond those specified in Table 1 asbasic requirements.Th