ASTM_D_3522_-_86_2002e1.pdf

Designation:D 3522 86(Reapproved 2002)e1An American National StandardStandard Test Method forApplied Coating Wax and Impregnating(Saturating)Wax inCorrugated Board Facing1This standard is issued under the fixed designation D 3522;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(e)indicates an editorial change since the last revision or reapproval.e1NOTEWarnings were moved from notes to section text editorially December 2002.1.Scope1.1 This test method covers the determination of the weightof wax that has been applied for coating of corrugated board,and the amount of impregnating(saturating)wax in the samefacing.1.2 This test method is especially applicable to board thathas a coated surface and also contains wax saturation withinthe facing structure.NOTE1The amount of surface wax on board that may or may notcontain impregnating(saturating)wax within its structure may be deter-mined alternatively by Test Method D 3521.If it is known that thespecimen has coating wax only,with no internal impregnating wax,thetotal coating wax applied may be determined by Test Method D 3344.1.3 This standard does not purport to address all of thesafety problems,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.For specific hazardstatements,see 7.1.2.Referenced Documents2.1 ASTM Standards:D 585 Practice for Sampling and Accepting a Single Lot ofPaper,Paperboard,Fiberboard,and Related Product2D 3344 Test Method for Total Wax Content of CorrugatedPaperboard3D 3521 Test Method for Surface Wax Coating on Corru-gated Board33.Terminology3.1 Definitions:3.1.1 weight percent impregnating waxthe weight percentof wax in the facing relative to the weight of unwaxed facingmeasured at 23C(73F)and 50%relative humidity.3.1.2 weight of applied coating waxthe weight of appliedcoating per unit area of board,usually grams per square metreor pounds per thousand square feet of board covered.4.Summary of Test Method4.1 The coated facing is peeled from the medium and thensplit into two layers,one bearing the coating on waxed fibersand one containing the waxed fibers only.The layers areextracted separately,collecting both fibers and wax,leading toa calculation of the applied surface coating wax and the amountof impregnating wax.5.Significance and Use5.1 The resistance of corrugated fiberboard shipping con-tainers to damage by moisture is improved by wax treatment,and a common practice involves a light wax saturation appliedto the medium and facings,followed by a curtain coating orroll coating operation applying wax to the surface.Thefunctional performance of the board is dependent upon theamount of wax deposited in each operation.5.1.1 For the wax impregnation within the facing,theprincipal concern is with the weight of wax used relative to theweight of paperboard present,that is,the weight percentloading or pickup.This method measures that loading andassumes that the loading is distributed uniformly throughoutthe facing.However,the method does not provide a measure ofthe weight of impregnating wax per unit area,since not all ofthe facing fibers are utilized in the testing.5.1.2 For the wax coating the principal concern is in theweight of wax present on the surface per unit area.This methodmeasures the amount of material applied,and assumes that themajor portion of molten coating applied will congeal andremain on the surface,without undue migration into the fibrousstructure of the medium.NOTE2In a typical curtain coating application,a portion of thecoating will partially migrate into and become embedded in the fibers ofthe facing to the extent of about 10%of the coating applied.5.1.3 These procedures involve extractions of designatedsections of the paperboard and determination of the extractablematerial reported as wax.This assumes that the nonwax1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricantsand is the direct responsibility of SubcommitteeD02.10.0Aon Physical and Chemical Properties.Current edition approved Oct.31,1986.Published December 1986.Originallypublished as D 3522 76.Last previous edition D 3522 76(1981)e1.2Annual Book of ASTM Standards,Vol 15.09.3Annual Book of ASTM Standards,Vol 05.02.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.extractables in the paperboard substrate are in negligibleamount(for example,about 0.2 weight%).NOTE3If the application of a correction for nonwax extractables isdesired,a suitable unwaxed board specimen may be extracted andappropriate calculations made.6.Apparatus6.1 Sample-Trimming EquipmentA suitable trimmingboard or template arrangement equipped with a razor edgeknife