Designation:D3521−86(Reapproved2012)StandardTestMethodforSurfaceWaxCoatingOnCorrugatedBoard1ThisstandardisissuedunderthefixeddesignationD3521;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversdeterminationoftheweightofwaxthatispresentasacoatingonthesurfaceofcorrugatedboard.Thismethodisapplicabletoboardtowhichwaxhasbeenappliedbycurtaincoating,rollcoating,orothermethods;thesubstrateboardmayormaynotcontainimpregnating(saturating)waxwithinitsstructure.NOTE1—Ifitisknownthatthespecimenhascoatingwaxonly,withnointernalsaturatingwax,thetotalcoatingwaxappliedmaybedeterminedbyTestMethodD3344.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D585PracticeforSamplingandAcceptingaSingleLotofPaper,Paperboard,Fiberboard,andRelatedProduct(Withdrawn2010)3D3344TestMethodforTotalWaxContentofCorrugatedPaperboard3.Terminology3.1Definitions:3.1.1weightofwaxcoating—theweightofwaxpresentasasurfacefilmoncorrugatedpaperboard,expressedasweightperunitarea,usuallygramspersquaremetreorpoundsofcoatingperthousandfeetofboardcovered.3.1.1.1Discussion—Thisdefinitionexcludesanyportionofwaxthatislocatedbelowthesurface,thatmayhavebeenpermittedtosoakintothefibrouspaperboardstructure.4.SummaryofTestMethod4.1Theamountofwaxpresentasacoatingonthesurfaceisdeterminedbydelaminatingthecoatedfacingtoobtainaripple-freesheet,thenscrapingoffthewaxusingarazorbladeandcalculatingthewaxremoved.5.SignificanceandUse5.1Waxcoatingsareappliedtocorrugatedboardtoprovideabetterbarrieragainstmoistureorotheragentsortoprovideimprovedappearanceorabrasionresistance.The...
