ASTM_D_722_-_93_2007.pdf

Designation:D722 93(Reapproved 2007)An American National StandardStandard Test Method forGrease Resistance of Paper1This standard is issued under the fixed designation D722;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 covers paper and paper products thathave been treated or designed to resist penetration by oils orgreases commonly found in foodstuffs.Such papers include butare not limited to greaseproof,glassine,and vegetable parch-ment papers.1.2 This test method provides relative data regarding thedegree of grease resistance for the materials tested based ontime required for penetration of a test specimen by turpentineunder specified laboratory conditions.For paper or paperproducts that are not penetrated under these conditions by theupper arbitrary time limit of the test(1800 s),no relativeinformation is provided.1.3 The values stated in SI units are to be regarded as thestandard.The inch-pound units given in parentheses are forinformation only.1.4 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 ProductD685 Practice for Conditioning Paper and Paper Productsfor TestingD1968 Terminology Relating to Paper and Paper ProductsD5039 Test Methods for Identification of Wire Side ofPaper3E122 Practice for Calculating Sample Size to Estimate,With Specified Precision,the Average for a Characteristicof a Lot or Process3.Terminology3.1 DefinitionsDefinitions shall be in accordance withTerminology D1968 and the Dictionary of Paper.44.Summary of Test Method4.1 Atest specimen is placed directly in contact with a pieceof white book paper that is lying horizontally on a laboratorybench or similar support in an environment of specifiedtemperature and relative humidity.Five grams of sand of aspecified particle size are placed in a pile on top of the testspecimen.The sand is then saturated with a known quantity ofturpentine containing a dissolved red dye.The time requiredfor the turpentine to penetrate the test specimen and stain thebook paper red is measured to the nearest 10 s.5.Significance and Use5.1 This test method gives a relative indication of the degreeto which paper and products made from paper resist penetra-tion by oils and grease commonly found in foodstuffs.Themeasured penetration times are greatly accelerated under theconditions of the test,in comparison to the time that might berequired for grease penetration in an actual end-use applicationof the tested material.5.2 While this test method may be used as a preliminary toolto select and predict paper or paper products for an intendedend use,it is not a substitute for actual use tests with thematerial or product of interest.5.3 This test method may also be useful in specificationswhere experience has shown that paper having a particulargrease resistance as measured by this test method is suitable foran intended end use.6.Apparatus6.1 Tube,of any rigid material,25 mm(1 in.)in insidediameter and at least 25 mm(1 in.)in height,the ends of whichhave been smoothed.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 1943.Last previous edition approved in 2002 as D722 93(2002).DOI:10.1520/D0722-93R07.2For 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.4Available 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 information.6.2 Buret,or automatic pipet,calibrated to deliver 1.1 mLofliquid.6.3 Sand,Ottawa cement testing sand,screened to pass aNo.20 and be retained on a No.30 sieve.6.4 Paper,white coated and calendered sheets of bookpaper,104 g/m2(70 lb 25 3 38500)of convenient size.6.5 Timing Device,stopwa