实木复合地板检验标准(英文)

1Multiple1-stripEngineeringFlooring（实木复合地板）PartA:Specification1.Appearance/ColorDefectsCategoryDefectsABCD1.KnotsSoundKnotsDia≤10mm,≤3pcsNotclustered≤80*100mm,≤1pcsBlackKnotsDia≤5mm,≤3pcsDia≤40mm,≤3pcs2.DiscolorationBlueStainNotallowedNotallowedSurfacepollutionNotallowedSlightlyallowed3.DecayDecayedsites(Rot)NotallowedNotallowed4.InspectholeWormholeNotallowedNotallowed5.CracksEndCrackNotallowedNotallowed6.WoodStructuredefectsSapWoodNotallowedC:width≤30%,Area≤15%D:Width:30%-50%,Area≤5%WoodHeartNotallowedNotallowedBlacklinesL:20mmW:5mm≤2pcsAllowedBarkpocketsL:10mmW:1mm:1pcsfilledwithputtyL:50mmW:3mm:2pcsfilledwithputty7.ManufacturingdefectsWatermarksNotallowedNotallowedSawmarksNotallowedNotallowedSurface&knotsfillerPuttycolorshallbeinconformwithsample’scolorPuttycolorshallbeinconformwithsample’scolor8.AestheticDefectsDifferenceincolorSlightlyallowedAllowed2.SizeCheckOverallLength，Width，ThicknessCheck,Lengthtolerance:±2mm(Nationalstandard)Widthtolerance:±0.1mm(Nationalstandard)Thicknesstolerance:±0.2mmOverallSquarenessCheckQmax≤0.2mmFaceLayerThickness(i.e.BirchT=6.2mm),Plywoodlayercheck:(i.e.5layerofpoplar&5layerofbirch)2Overallsizecheck/OverallSquarenessCheckmethod:1)VisualcheckbyTilingpiecesofflooringplankstogethertocheckconformity.(0.5metrefromproductswithdaylightorequivalent)2)MeasurebyMeasuringTapes,Calipersfor8-32piecesforeachitem.3.Construction//workmanshipOverallwarp&GapCheckmethod:1)VisualcheckbyTilingpiecesofflooringplankstogethertocheckconformity.(0.5metrefromproductswithdaylightorequivalent)2)MeasurebyGauges,check8-32piecesforeachitem.Warp:WidthWarp:0.15%(denteddirection);0.2%(raiseddirection)LengthWarp:0.5%(denteddirection);1%(raiseddirection)3Gap:Gapbetweenassembledflooringplanks:Average:0.15mm;Max:0.2mmHeightGapbetweenassembledflooringplanks:Average:0.10mm;Max:0.15mm4.PhysicalTesta)Dippeeltest:checkgluestrengthtowardsdelaminationtendencyMakeflooringsampleatsize75.0mm*75.0mm(6pieces),soakitatwater70。Cfor2hours,thendryitfor3hoursat60。C,toseewhethergluehaspeeling,accumulativetotalpeelinglengthlessthan1/3length=25mmisqualified(Min.5piecespassedthetest)Method:checkfactoryreportor/andsupervisetest.b)moisturecontentCheckwoodmoisturelevel4Method:1)Checkreportfactorymakeexperiment(drywholeproducttomeasurethemoisturelevel)toseetheaveragemoisturelevelforvariouslayers.And2)Usemoisturetestertomeasuremoisturecontentatvarioussites,frontandbacksidestochecktheaveragecontentandmoisturelevelunanimousatvarioussites.Concerns:theremightbeoccasionsthatmoisturelevelisoutof6%-8%,isitsmalldeviationisallowed?c)StaticBendingStrength&ElasticModulus:StaticBendingStrength:Checkflooring’sstrengthtoresistbending:30Mpa(Nationalstandard)ElasticModulus:Checkflooring’srigiditytoresistbending:4000Mpa(Nationalstandard)Method:checkfactoryreportor/andsupervisethetestatfactory.Moisturetesterusingclarification:1)Moisturecontenttestingshallbeinconformwithmaterial’sdrydensity,ItissourcedthatBirchwooddrydensityisat0.56—0.67g/cm3Thereforeitshallusuallysetbeat“3”position2)thiskindoftesterisinductivetype,whichwillscantosomedepthofinsidewood(thistypescandepthis0.2-1.6mm,thereforenoneedtopressthetesterveryhardonwoodsurface5