107-1

1. SCOPE1.1 Theseprocedureshelpdeterminetheabilityofapressuresensitivetapetoremainadheredunderaconstantloadappliedparalleltothesurfaceofthetapeandsubstrate.Shearadhesion(shearresistance)istheabilityofatapetoresiststaticforcesappliedinthesameplaneasthebacking.

1.1.1 ProcedureAmeasurestheshearadhesionwhenappliedtoaverticalstandardsteelpanel.

1.1.2 ProcedureBmeasurestheshearadhesionwhenappliedtoaverticalpanelcoveredwithNIST(NationalInstituteofStandardsandTechnology,USA)SRM1810Astandardfiberboard.

1.1.3 ProcedureCmeasurestheshearadhesionwhenappliedtoverticalpanelcoveredwithafiberboardagreeduponbythebuyerandseller.

1.1.4 ProcedureDmeasurestheshearadhesionofreinforcedfilamenttapewhenappliedtoahorizontalstandardsteelpanel.

1.1.5 ProcedureEmeasurestheshearadhesionofafilament-reinforcedtapewhenappliedtoahorizontalpanelcoveredwithNISTSRM1810Astandardfiberboard.

1.1.6 ProcedureFmeasuresshearadhesionofafilament-reinforcedtapewhenappliedtoahorizontalpanelcoveredwithafiberboardagreeduponbythebuyerandseller.

1.1.7 ProcedureGisthesameasTestMethodAexceptthetestisconductedatanelevatedtemperatureanda10-minutedwelltime.

1.2 Theseproceduresprovideameansofassessingtheuniformityoftheadhesiveofagiventypeofpressuresensitivetape(anexamplearetapesusedforpackagingapplications).Theassessmentmaybewithinarolloftape,betweenrollsorproductionlots.

1.3 Variationsinthetapebackingandadhesiveaffecttheresults,therefore,thesemethodscannotbeusedtopinpointthespecificcause(s)ofnon-uniformity.

Afera:AssociationdesFabricantsEuropeensdeRubansAuto-Adhesives(AssociationofEuropeanTapeManufacturers)ASTM:AmericanSocietyforTestingandMaterials(USA)EN:EuropeanNorm(Europe)PSTC:PressureSensitiveTapeCouncil(NorthAmerica)

ShearAdhesionofPressureSensitiveTape

CallLetters PSTC107

DateofIssuance 10/00Revised 10/03Revised 05/07

HarmonizedInternationalStandard

ASummaryofChangessectionappearsattheendofthistestmethod.

107-2

2. REFERENCEDDOCUMENTS2.1 ASTMStandards:

D3654/D3654MStandardTestMethodforHoldingPowerofPressure-SensitiveTapes

D3715PracticeforQualityAssuranceofPressure-SensitiveTapes

D5750GuideforWidthandLengthsofPressure-SensitiveTapes

2.2 AFERAStandards:

2.2.1 AFERA5012SelfAdhesiveTapes-MeasurementofStaticShearAdhesion

2.3 CENStandards

2.3.1 EN1943SelfAdhesiveTapes-MeasurementofStaticShearAdhesion

2.3.2 EN10088/2,2R-SpecificationforStainlessSteelPlate

2.4 PSTCStandards:

2.4.1 PSTC-107ShearAdhesionofPressureSensitiveTape

3. SUMMARYOFTESTMETHOD3.1 ProcedureA-Shearadhesiontostandardsteelpanel-Astripoftapeisappliedtoastandardsteelpanelundercontrolledrolldown.Thepanelismountedvertically,astandardmassisattachedtothefreeendofthetapeandthetimetofailureisdetermined.

3.2 ProcedureB-ShearadhesiontoastandardNISTfiberboard-AstripoftapeisappliedtoapanelcoveredwithNISTSRM1810Afiberboardundercontrolledpressure.Thepanelismountedvertically,astandardmassisattachedtothefreeendofthetapeandthetimetofailureisdeter-mined.

3.3 ProcedureC-Shearadhesiontoaverticalfiberboardsurfacewithcontrolledrolldown(seeFigure1).Thefiberboard,corrugatedboard,orothersubstrateagreeduponpriortotestinganddescribedinthereportsection.Astandardmassisattachedtothetapeandthetimetofailureisdetermined(seeFigure2).

3.4 ProcedureD-Shearadhesiontoastandardsteelpanel.Astripoffilament-reinforcedtapeisapplied to a standard steel panel with a 120 bend at one end with controlled roll down. The panel is mountedhorizontally,tapesideup,withthefreeendofthetapeallowedtohangverticallyovertheroundedend.Astandardmassisattachedtotheendofthetapeandallowedtoactforspecifiedtime.

3.5 ProcedureE-Shearadhesionoffilamentreinforcedtapetoastandard(NIST)fiberboard-Astrip of reinforced filament tape is applied to a panel with a 120 bend, covered with NIST SRM 1810Astandardfiberboardundercontrolledrolldown.Thepanelismountedhorizontally,tapesideup,withthefreeendofthetapeallowedtohangverticallyovertheroundedendofthepanel.Astandardmassisattachedtotheendofthetapeandallowedtoactforspecifiedtime(seeFigure3).

3.6 ProcedureF-Shearadhesionoffilamentreinforcedtapetoafiberboard-Astripofreinforcedfilament tape is applied to a panel with a 120 bend at one end under controlled roll down. The panel iscoveredwithafiberboard,corrugatedboardorothersubstrateagreeduponpriortotestinganddescribedinSection12.Thepanelismountedhorizontally,tapesideup,withthefreeendofthetapeallowedtohangverticallyovertheroundendofthepanel.Astandardmassisattachedtotheendofthetapeandallowedtoactforaspecifiedtime.

3.7 ProcedureG-ThistestmethodisconductedasdescribedinProcedureAexceptthetestisconductedatanelevatedtemperature.

107-3

3.8 ForProceduresA,B,C,andGthenormaltestareashallbe12by12mm.Atestareaof24by24mmmaybespecified.

3.9 ForProceduresD,E,F,thespecimenwidthshallbe12mm.

4. SIGNIFICANCEANDUSE4.1 ProcedureAmeasurestheabilityofapressuresensitivetapetoadheretoastandardsteelpanelunderconstantstress.Thismayormaynotrelatetotheabilityofthetapetoadheretoothersurfaces.

4.2 ProcedureBmaybeusedtodeterminetheshearadhesionoftapesgenerallyusedtoclosefiberboardboxesinpackagingapplications.

4.3 ProcedureCmeasurestheabilityofapressuresensitivetapetoadheretoanon-standardfiber-board,linerboardorothersubstratewhichisagreeduponfortesting.Thismaybeusedtocomparetheshearadhesionoftapestoaparticularsurfaceortocomparetheshearadhesionofatapetoavarietyofsurfaces.

4.3.1 Thesurfaceofsimilarfiberboardmayexhibitconsiderablevariationsbetweenpapermills,betweenbatchesfromonemill,andwithinbatches.Takecareinthechoiceofsamplesandwhencomparingtestresultsbetweensubstrateswhichmaynotbeexactlythesame.

4.3.2 Theprecisionoftestconductedonnon-standardsurfacesmaybedifferentfromthatdescribedinsection13.

4.4 ProceduresD,E,andFmaybeusedtodeterminetheabilityofafilamentreinforcedtapetoholdwhenplacedunderconstantstress.ThereinforcedtapesmayalsobetestedusingProceduresA,B,andC.

4.5 ProcedureGmaybeusedtocomparetheshearadhesionoftapewhenappliedtoastandardsteelsurfaceandtestedatanelevatedtemperature(see10.6.3and12.1.8).

5. APPARATUS5.1 Specimencutter-Thespecimencuttershallholdtwosingleedgerazorbladesinparallelplanes,aprecisedistanceapart,toformacutterofexactspecimenswidths.Twocutters,12and24mmcuttingwidth,shallbeavailableorappropriatealternateswhichwillnotcauseedgedamage.

Note1-The12mmcuttershallconsistofabarstock1mmwide.Theedgesforabout125mmfromoneendshallbeslightlyroundedtoformahandle.Thewidthoftheendofthebarshallbenarrowedtoexactly12mmminusthethicknessofasingleedgerazor(oneoftwousedascuttingedges).Therazorbladesshallbeheldinpositionusingsideplates.Theendofthecuttershallbecutaway at a 45 angle to expose the cutting edge at one end of the blades. The edges shall be separated by120.10mm.The24mmcuttershallfollowthesamedescriptionexceptthebarstockshallbe24.0mmwideandshallbenarrowedtoexactly24mmminusthethicknessofasingleedgerazor.

Note2-Thesewidthscorrespondtotheprimarymetric(SI)unitsdescribedinASTMD5750.Ifitisdesirabletotestslightlydifferentwidths(e.g.12.5or25mm)ofspecimensper9.4,thisshouldbenotedper12.1.5.

Note3-Theremaybeseveralsuppliersoftheseitems.SeeAppendixB.

5.2 Dispensingsystem,forsolvents,suchasawashbottle

107-4

5.3 Panel

5.3.1 ForProceduresA,B,C,andH,apanelatleast50mmlongand50mmwideandnotlessthan1.1mmthicknessstainlesssteel302or304inaccordancewithSpecificationEN10088/2,2Rhavingabrightannealedfinish.Thesurfaceroughnessheightshallbe5025nmarithmeticalaveragedeviationfromthemeanline.Oneorbothpanelendsshallbegroundtoform a 90 angle with the surface. Panels showing stains, discoloration, or many scratches are notacceptable.Newpanelsshouldbecleanedpriortouseas10.2.1,exceptwithtenwashesofthefinalsolvent.Betweenuses,thepaneltestsurfaceshallbeprotectedfromscratchesandcontamination,andthepanelsstoredatconditionsdescribedin8.1.

5.3.2 ForProceduresD,E,andF,apanelasdescribedin5.3.1shallhavea12mmlengthofone end of the panel bent through an arc of 120 away from the test surface. The radius of the curvatureofthefinishedsurfaceatthebendshallbe1.5to3mm.

5.4 Roller,mechanicallyorhandoperated

5.4.1 Asteelroller852.5mm,indiameterand451.5mminwidth,coveredwithrubberapproximately6mminthickness,havingaShorescaleAdurometerhardnessof805.Thesurfaceshallbeatruecylindervoidofanyconvexorconcavedeviations.Themassoftherollershallbe2kg0.1kg.

5.4.2 Nopartoftheapparatusshallincreasethepressureoftherollerduringuse.Therollershallmoveeithermechanicallyorbyhandattherateof100.5mm/s.(SeeFigure5.)

5.5 Teststandsandancillaryapparatus

5.5.1 ProceduresA,B,C,andG-Ateststandthatshallholdthetestpanel(seeFigure6),with the tape applied, at an angle of 2 with the vertical, so that when the mass is acting on the testspecimen,nopeelforceswillbeexertedonthetape.

5.5.2 ProceduresD,E,andF-Ateststandthatwillsupportthetestpanelinahorizontalplane,approximately300mmabovetheworksurface.

5.5.3 Clamp,thatwillallowtheattachmentofthemasstothespecimen,distributingtheloadequallyacrossthetapespecimenwidth.

5.5.4 Testmasses

5.5.4.1ProceduresA,B,D,andH.Thetestmassshallbe10005gorothermassasspecified.Themassoftheclampdescribedin5.5.3shallbeincludedaspartofthetotalmass.

5.5.4.2ProceduresD,E,andF.Thetestmassshallbe4.50.2kgorothermassasspecified.Themassoftheclampdescribedin5.5.3shallbeincludedaspartofthetotalmass.

5.5.5 Timingsystem

5.5.5.1 ForProceduresA,B,C,andG,tomeasuretheintervalbetweentheapplicationoftheloadtothespecimenanditsseparationfromthepanel.

5.5.5.2 ForProceduresD,E,andF,asuitablemeansofmeasuringtheamountofslip-pageofthetapeto1mmonthepanelafterthemasshasactedfor48h.

6. REAGENTMATERIALS6.1 Purityofreagents-Reagentgradechemicalsshouldbeusedinalltests.Othergradesmaybeused,provideditisfirstascertainedthereagentisofsufficientlyhighpuritytopermititsusewithoutlesseningaccuracyofthedetermination.

107-5

6.2 Solvents

6.2.1 Anyofthefollowingsolventsmaybeusedforcleaning:

6.2.1.1 Diacetonealcoholnon-residual,technicalgradeorbetter

6.2.1.2 Methanol(95%)

6.2.1.3 MethylEthylKetone(MEK)

6.2.1.4 n-Heptane

6.2.1.5 Acetone

6.2.2 Forfinalcleaning,beforeeachtest,MEKoracetoneshallbeused.

6.3 Cleaningmaterial,absorbent;surgicalgauze,cottonwoolortissue.Tobesuitable,materialsmustbelint-freeduringuse,absorbent,containnoadditivesthataresolubleinthesolventslistedin6,andmadeexclusivelyfromvirginmaterials.

7. SAMPLING7.1 SamplingshallbeinaccordancewithASTMPracticeD3715/D3715Morotherformalsamplingprocedureagreedtobybothpartiesforrefereetesting.Fivereplicatespecimensshallbeaveragedforallprocedures.Nosinglevalueshallbeconsideredasrepresentativeoftherollundertest.

8. CONDITIONING8.1 Condition the sample rolls of tape in the standard conditions of 23 1 C and 50 5% RH. Testattheseconditionsunlessotherwisespecified(see12.1.7).Ifthesetolerancescannotbemain-tained,theclosestpossibletolerancesshallbeusedandtheserevisedtolerancesquotedinthereport(see12.1.7).

Note4-Caution:Thetestershouldknowthatbyprolongedhandlingofthetestpanel,heatfromthehandistransmittedtothetestpanel.Therefore,justpriorto,during,andafterapplicationofthespecimentothetestpanel,thepanelshouldbehandledaslittleaspossible.

9. TESTSPECIMENS9.1 Removalfromroll

9.1.1 Unwindanddiscardatleastthreebutnomorethansixouterwrapsoftapefromthesamplerollbeforetakingspecimensfortesting.

9.1.2 RemovethreespecimenspersamplerollforeachtesttobeperformedforProceduresA,D,andG;andfivespecimensperrollforProceduresB,C,E,andF.Removespecimensfromfreelyrotatingrollattherateof500to750mm/s.Wherewidthorotherfactorcausingahighadherencetobackingmakesitimpossibletoremovethespecimenattheprescribedrate,removeitatarateascloseto500mm/saspossible.

9.2 Whentapeiswiderthanspecifiedforinthetestmethod,cutthespecimenfromthecenterofthestripremovedfromtherollinaccordancewith9.1.2.

9.3 Applyspecimenshortlyafterunwinding(within5minutes).

9.4 Testspecimensize.

9.4.1 ProceduresA,B,C,andG.Thetestcontactareashallbe120.5by120.5mm,orotherwidth,asspecified(240.5mmby240.5mmmaybeused).Thelengthofthespecimenshallbeapproximately150mm.

9.4.2 ProceduresD,E,andFspecimensshallbe120.5mminwidthandapproximately300mmlong.

107-6

10. PROCEDURES10.1ForProceduresBandC,applybymeansofadouble-coatedpressure-sensitivetapea30by75mmpieceoffiberboard(see3.2,3.3)withthe30mmdimensioncenteredonthe50mmdimensionatoneendofthetestpanel(see5.3.1and5.3.2).

Note5-Takecarethatthefiberboardisappliedwiththepropersideupandisorientedsothatthegrainofthepaper,machinedirection(MD),isperpendiculartotheintendeddirectionoftheshearstress.

10.2ProcedureA

10.2.1Dispenseoneofthesolventslistedin6.2.1ontothepanel,wipingtodrynesswithfreshabsorbentcleaningmaterial.Repeatforatotalofthreewasheswiththissolvent.FinalwipeshallbeMEKoracetone.Panelsnotusedwithin10hoursshouldberecleaned.

Note6-Discardpanelsshowingstains,discoloration,ormanyscratches.Avoidcontactingpanelsurfacewithfingers.Duringstorage,panelsshouldbeprotectedfromdamageorcontamination.

10.2.2Centerthetestspecimenonthe50mmdimensionatoneendofthetestpanelandapplywithoutaddedpressuretocoveranareaexactly12x12mm,unlessotherwidthspecified,withthetape.Masktheexposedadhesiveofthefreeareaofthespecimen.

10.2.3Topreventcuttingthespecimenbytheendofthepanelduringrolldown,placeanotherpanelofthesameorslightlylesserthicknessunderthefreemaskedendofthespecimen,andincontactwiththeendofthepanelpriortorolldown.Rolldowntheappliedtestareatwiceineachlengthwisedirection.

10.2.4Individuallyprepareeachspecimenandtestwithin1minute.Fortapesotherthanpack-agingtape,otherdwelltimesmaybeusedbutmustbereported(See12.1.4).

10.2.5Placetheclamponthemaskedfreeendofthespecimen,ensuringthattheclampextendscompletelyacrossthewidthofthespecimenandisalignedtouniformlydistributetheload.

10.2.6Placethetestassemblyintheteststandsothatthefreeendofthetestspecimenisvertical,ensuringthatnopeelforcesactonthespecimen.

10.2.7Applythe1000gmasstotheclampgentlysoastocausenoimpactforceonthetapespecimen.Recordthetimeelapseduntilthespecimenhascompletelyseparatedfromthetestpanel.(SeeFigure4.)

10.3ProceduresBandC

10.3.1Conductthesetestsasdescribedin10.2exceptthetestpanelshallbecoveredwithfiberboarddescribedin10.1

10.4ProcedureD

10.4.1Clean,asdescribedin10.2.1,atestpaneldescribedin5.3.1.

10.4.2Applyoneendofthespecimen,about100mminlength,adhesivesidedown,tothelongitudinalsurfaceofthetestpanel.Thetapemustbeatatruerightangletothebentedgeofthepanel.Allowtheremaininglengthtoextendoverandbeyondthebendedgeofthepanel.

10.4.3Usingasquare,cutacrossandthroughthewidthofthetapespecimen75mmbackfromthefrontofthebendinthehorizontalplaneofthetestpanelsurface.

10.4.4Rolltwice,onceineachlengthwisedirection.

10.4.5Placetheclamponthefreeendofthespecimen,ensuringthattheclampextendscompletelyacrossthewidth,andisalignedsoastodistributetheloaduniformly.

107-7

10.4.6Placethetestassemblyintheteststandsothatthepanelishorizontal,tapesideup,andthefreeendofthetestspecimeninvertical.Applythe4.5kgmasstotheclampgentlysoasnottocauseanyimpactforceonthespecimen.

10.4.7Attheendof48hunderload,examinethespecimenforevidenceofslippage.Measureanyslippagethathasoccurredtothenearest1mm.(SeeFigure4.)

10.5ProceduresEandF

10.5.1Conductthesetestsasdescribedin10.4exceptthetestpanelsshallbecoveredwithfiberboardasdescribedin10.1.

10.6ProcedureG

10.6.1Preparetestspecimensasdescribedin10.2.1,10.2.2,10.2.3,10.2.4,and10.2.5.

10.6.2 Place the test stand, with specimen in place, in an oven maintained at 50 1C, or other temperature,asspecified.

10.6.3Allowtoconditionfor10min.,thenapplythe1000gmasstotheclampgentlysoasnottocauseanyshearimpactforceonthetapespecimen.Recordthetimelapsedinwhichthetapespecimenhascompletelyseparatedfromthetestpanel(See12.1.8).

11. CALCULATIONS11.1ProceduresA,B,C,andG-Todeterminethetestresultsforeachrolloftape,converteachofthefivespecimentestresults(timestofailure)toitscommonornaturallogarithm.Obtainthearithmeticmeanofalllogarithmsandthenconvertbacktotimebyobtainingtheappropriateantilogarithm.Thisgivesthetestresultfortherolloftapeunderconsiderationinthesamplingplan.

11.2ProceduresD,E,andF-Theaverageslippageinmmshallbereported.

12. REPORT12.1Thereportshallincludethefollowing:

12.1.1Statementincludingwhichtestmethodwasusedandindicatinganydeviationfromthemethodaswritten.

12.1.2Identifythesourceofeachrolloftape.

12.1.3ForProceduresA,B,C,andG,thetimeforthetapetoseparatecompletelyfromthepanel.ForProceduresD,E,andF,theamountofslippageinmmtothenearestmm.

12.1.4Dwelltime,ifotherthanthestandard1minute.

12.1.5TestspecimensizeforProceduresA,B,C,andGifotherthan12by12mm.WidthofspecimenforProceduresE,F,andGifotherthan12mm.

12.1.6 Conditioning if other than 23 1C or 50 + 5% RH.

12.1.7 Test temperatures for Procedures A, B, C, D, E, and F, if other than 23C and test tem-perature for Procedure G, if other than 50C.

12.1.8Modeoffailure-Cohesion(cohesivestrength,internalbond)-Theabilityoftheadhesivetoresistsplitting.Goodcohesionisnecessaryforcleanremoval.Adhesion-AbondproducedbetweenapressuresensitivetapeadhesiveandasurfaceforProceduresA,B,C,andG.

12.1.9FiberboardsubstrateifProcedureCorFisused.

107-8

13. PRECISIONANDBIASSTATEMENT13.1Thesurfacesofsimilarfiberboardmayexhibitconsiderablevariationsbetweenpapermills,betweenbatchesfromonemill,andwithinbatches,thereforeresultsusingdifferentfiberboardshouldnotbecomparedexceptwhenonewishestouseProcedureCasameansofcomparinghowwellagiventapewilladheretodifferentfiberboards.

14. KEYWORDS14.1Pressuresensitivetape,filamenttape,shearadhesion.

SUMMARYOFCHANGES

Correctedunitofmeasurementforsurfaceroughnessinsection5.3.1,line3 Requiredfivereplicatesamplesforallproceduresinsection7.1

Figure 1. Controlled roll down shear adhesion sample preparation.

107-9

Figure 2. Shear adhesion sample preparation with weight.

Figure 3. Shear adhesion sample in test stand (initial).

107-10

Figure 5. Sample preparation for shear adhesion hand roll down.

Figure 4. Shear adhesion sample in test stand (final).

Figure 6. Test stand for shear adhesion.

107-11