ASTM_D_6819_-_02_2007.pdf

Designation:D6819 02(Reapproved 2007)An American National StandardStandard Test Method forAccelerated Temperature Aging of Printing and WritingPaper by Dry Oven Exposure Apparatus1This standard is issued under the fixed designation D6819;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 This test method describes a laboratory procedure foraccelerating the aging of printing and writing paper withinsealed glass tubes through exposure to elevated temperaturewithin an oven.1.2 This test method applies to all types of printing andwriting paper whether it is plain base paper,has internaladditives,is coated,is printed or contains any variants ofprinting and writing paper found in normal usage.1.3 This test method specifies the sample preparation andconditions of exposure required to obtain information on thestability of paper to aging with regard to changes in mechanicalstrength properties brought about by exposure of such paper toelevated temperature.1.4 This test method provides the means to compare thestability of different papers on a relative basis,but does notattempt to project the exact life expectancy for a given paper.Life expectancy depends in large part on the limits of accept-ability beyond which various paper properties are no longeruseful,as defined by end-users.For a given paper,those limitswill be different for different end-users.This test method doesnot provide a means to measure or to calculate such lifeexpectancy.1.5 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.2.Referenced Documents2.1 ASTM Standards:2D585 Practice for Sampling and Accepting a Single Lot ofPaper,Paperboard,Fiberboard,and Related ProductD644 Test Method for Moisture Content of Paper andPaperboard by Oven DryingD685 Practice for Conditioning Paper and Paper Productsfor TestingD689 Test Method for Internal Tearing Resistance of PaperD828 Test Method for Tensile Properties of Paper andPaperboard Using Constant-Rate-of-Elongation Appara-tus3D1968 Terminology Relating to Paper and Paper ProductsD2176 Test Method for Folding Endurance of Paper by theM.I.T.TesterD5804 Test Methods for Zero-Span Tensile Strength(“DryZero-Span Tensile”)32.2ASTM Adjunct:ASTM Paper Aging Research Program43.Terminology3.1 DefinitionsDefinitions shall be in accordance withTerminology D1968.For terms used in this specification whichare not provided by Terminology D1968,see the Dictionary ofPaper.54.Summary of Test Method4.1 In this test method conditioned samples of printing andwriting paper are placed inside airtight glass tubes to retainmoisture and air.They are then aged at a constant elevatedtemperature in a well-controlled laboratory oven for a fixed testperiod.The aging of paper due to its interaction with moistureand air is accelerated at the elevated temperature.Mechanicalstrength properties of the paper are measured before and afterthe aging process.The extent of retention of these propertiesprovides a measure of the physical strength stability of thepaper as it relates to its aging.1This test method is under the jurisdiction of ASTM Committee D06 on Paperand Paper Products and is the direct responsibility of Subcommittee D06.92 onStandard Documents Relating to Paper and Paper Products.Current edition approved Dec.1,2007.Published December 2007.Originallyapproved in 2002.Previous current edition approved in 2002 as D6813 02.DOI:10.1520/D6819-02R07.2For 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.3Withdrawn.The last approved version of this historical standard is referencedon www.astm.org.4AvailablefromASTMInternationalHeadquarters.OrderAdjunctNo.ADJD06PAPERAGING.Formerly Research Report D061004.5Available from Technical Association of the Pulp and Paper Industry(TAPPI),15 Technology Parkway South,Norcross,GA 30092,http:/www.tappi.org.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.NOTICE:This standard has either been superseded and replaced by a new version or withdrawn.Contact ASTM International(www.astm.org)for the latest information5.Significance and Use5.1 This test method will find use by parties concerned withthe relative level of physical strength stability over time ofvarious printing and writing papers.5.2 The test will provide manufacturers,paper users andother interested parties with rankings of paper stability thatide