常用的包装材料性能差异的影响因素Word下载.docx
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白卡纸是一种较厚实坚挺的白色卡纸,采用100%漂白硫酸盐木浆为原料,经过游离状打浆,较高程度地施胶(施胶度为1.0~1.5arm),加入滑石粉、硫酸钡等白色填料,在长网造纸机上抄造,并经压光或压纹处理而制成。
白卡纸一般为单面涂布,市场上主要分为sbs和fbb两种,前者以漂白化学浆为原料,两层结构,特点是白度较高,但同等定量纸板的挺度和厚度较差;
后者以漂白化学浆作为纸板的表层和底层,而以机械浆为原料构成中间层,形成三层结构的纸板,其特点是在同等定量的条件下,厚度高,硬度好,从而带来良好的模切效果和折痕效果。
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Grey,whitepaperandwhitecardboardistwokindsofcommonlyusedpackagingmaterials.WhiteboardpaperismadefromMianJiangandeachlayerbottomslurryascopy.Itsstructureismainlydividedintothebottomlayer,corelayer,lining,coatingandsurfaceparts.Manilaboardbottomcolortogrey,composedofwastenewspapersafterdeinking,soatthebottomofthecompositionisverycomplex;
Surfaceiswhite,itisalayerofkaolinpowder,binderandotherchemicalrawmaterials,mixtureofthincoatingsurface.Surface(coatedsurface)highwhiteness,printinginkabsorbency,smoothnessandglossaregood,stiffnessofthepaperitselfalsohastheverygoodandfolding,canusetoprintdirectly,andcansatisfytherequirementofpackaging.Manilaboardsurfaceaftercoatingtreatment,surfaceperformancehasgreatlyimproved,bothcansatisfytherequirementofthehighqualitycolorprinting,packagingofhighqualitymaterialishigh-gradegoods.Whitecardboardisarelativelythicksolidwhitepaperboard,using100%bleachedsulphatewoodpulpasrawmaterial,afterbeatingYouLiZhuang,higherdegreetoglue(gluedegreeis1.0~1.5arm),jointhetalcumpowder,bariumsulfate,suchaswhitepacking,inthelongnetsmanufacturepaperwithpulponpapermachine,andthepressureorembossingprocessing,madeofalight.Generalforsingle-sidecoatedwhitecardboard,mainlyonthemarketisdividedintoSBSandFBBtwokinds,theformertothebleachedchemicalpulpasrawmaterial,twolayerstructure,characterizedbywhitedegreeishigher,butthesamequantitativestiffnessandthicknessofthecardboardispoorer;
Forbleachedchemicalpulpasasurfaceandthebottomboard,andusingmechanicalpulpasrawmaterialsformthemiddletier,cardboardformthreelayerstructure,itscharacteristicisundertheconditionofsamequantitative,thickness,highhardness,resultingingooddiecuttingeffectandthecreaseeffect.HTTP:
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灰底白板纸和白卡纸在诸如食品、化妆品、礼品及药品包装等方面有着相似的应用领域。
然而,两种纸张在表面性能方面的差异到底有多大?
并且这些差异对两种纸张印刷阶调再现效果是否有影响,酿酒设备影响有多大?
本文对这两种包装纸的表面性能及阶调再现性进行了实验对比研究,比较分析了两者之问的性能差异及其各自的阶调再现性能,为定量分析这两种纸张的性能,更好地使用这两种纸张提供有益的数据参考。
Grey,whitepaperandwhitecardboardinareassuchasfood,cosmetics,giftsandpharmaceuticalpackaging,etchavesimilarapplications.However,twokindsofpaperonthesurfaceperformancedifferenceishowmuch?
Andthedifferencesoftwokindsofpaperprintingordertonereproductionisinfluentialeffect,influencehavehowold?
Inthispaper,thepropertiesofthesetwokindsofwrappingpaperandorderthereproducibilityofexperimentalcontrastresearch,comparativeanalysisoftheperformanceoftheqofthedifferencesandtheirrespectiveordertonereproductionperformance,fortheperformanceofthequantitativeanalysisofthesetwokindsofpaper,betteruseofthesetwokindsofpapertoprovidesomeusefulreferencedata.
1实验部分
Part1experimental
基于这两种包装用纸在表面性能方面存在的差异,首先通过实验测定两种纸张各纸样的基本表面性能;
然后依据各纸样的基本表面性能,选用一定的印刷条件,在igt印刷适性仪上印刷打样,找到各纸样的最佳墨层厚度,并在各自最佳墨层厚度下印刷打样;
最后,测试各纸样的网点面积率、实地密度值等数据,泰安锅炉对样张进行分析,对比研究这两种包装纸的差异及其对印刷品阶调再现性能的影响。
Basedonthesetwokindsofpackingpaperonthesurfaceperformancedifferences,firstofall,throughtheexperimentaldeterminationoftwokindsofpaperpatternofthesurfaceofthebasicperformance;
Thenaccordingtothepatternofthesurfaceofthebasicperformance,choosecertainprintingconditions,printingproofingonigtprintingeligibilityinstrument,findthebestinkfilmthicknessofeachpattern,andundertherespectiveoptimuminkfilmthicknessprintingproofing;
Finally,testthedotarearateofeachpattern,fielddensityvaluessuchasdata,analyzethetearsheet,comparativestudythedifferencesbetweenthesetwokindsofwrappingpapertoprintordertonereproductionperformanceimpact.
实验材料:
长兴白板纸(250g/m。
)、华明白板纸(250g/m。
)、华丰白板纸(250g/m。
)、鸿泽白板纸(250g/m)、凡南白板纸(250g/m。
)、亚太白卡纸(250g/m)、太阳白卡纸(250g/m。
)、荷兰白卡纸(250g/m);
采用的油墨是天津东洋油墨有限公司的胶印亮光快干型油墨(黄、品、青)。
Experimentmaterials:
changxingwhiteboardpaper(250g/m).,huamingwhiteboardpaper(250g/m).,huafengwhiteboardpaper(250g/m).,hongzewhiteboardpaper(250g/m),everysouthwhiteboardpaper(250g/m).,thewhitepaper(250g/m),thesun,whitecardboard(250g/m).,theNetherlands,whitecardboard(250g/m);
Usedinprintinginkistianjintoyoinkco.,LTD.,theoffsetofthelightquick-dryingtypeprintingink(yellow,taste,andgreen).
1.1纸张表面性能的测试
1.1thepapersurfacepropertiesofthetest
实验仪器:
wsb一ⅱ白度计;
ugv一50型variabieglossmeter变角光泽仪;
ym一20油墨吸收性测定仪;
modelm590pakerprint—surf表面粗糙度测试仪。
实验环境:
温度21℃,相对湿度49~51。
通过实验,8种纸样的各项性能数据见表1。
Experimentalapparatus:
stationWSBawhitenessmeter2;
Ugvvariabieglossmetera50typevariableAngleglossmeter;
Yma20inkabsorptionapparatus;
Modelm590pakerprint-surfsurfaceroughnesstester.Experimentalenvironment:
temperatureof21℃,relativehumidity49to51.Throughtheexperiment,eightkindsofpatternofeachperformancedataareshownintable1.
1.2确定最佳印刷墨层厚度及印刷打样
1.2todeterminethebestprintinginklayerthicknessandtheprintingproofing
实验仪器、印刷条件、实验环境:
igt印刷适性仪(aic2—5型),65l/ear网线辊,x—rite528密度计;
压力650n,印刷速度0.2m/s;
温度2l℃~25℃,相对湿度45~55。
通过大量印刷打样及测试,先找出各纸样的最佳墨层厚度(表2所示),
Experimentalapparatus,printingconditions,experimentalenvironment:
igtprintingeligibilityinstrument(aic2,5),65l/earnetworkcableroller,x-rite528densitometer;
650npressure,printingspeed0.2m/s;
Temperature2℃l~25℃,relativehumidityof45~55.Throughalotofprintingproofingandtesting,thepatterntofindouttheoptimuminkfilmthickness(shownintable2),
再在aic2—5型igt印刷适性仪上,按照每种纸张的最佳墨层厚度,以上述印刷条件,用同样的油墨分别打出8种纸样的黄、品、青3种单色的网线样张,经对各样张不同网点面积率的网线块及实地色块测量,得出8种纸样黄、品、青3个单色的网点增大值曲线、印刷特性曲线及阶调密度反差曲线。
Againinigtprintingeligibilityaic2,5typeinstrument,accordingtotheoptimuminkfilmthicknessofeachpaperandprintedintheaboveconditions,usingthesameink,respectively,with8kindsofpatternofyellow,taste,andgreenthreemonochromenetworkcablesample,afterthesampledifferentdotarearateofthenetworkcableandfieldcolorpiecemeasurement,concludedeightpatternyellow,taste,andgreenthreemonochromenetworkincreasesvaluecurve,theprintingandorderadjustabledensitycontrastcurvecharacteristiccurves.
2灰底白板纸和白卡纸阶调再现性的对比分析
2greyboardpaperandwhitecardboardreproducibilityofcontrastiveanalysis
2.1网点增大值对比分析以品红墨各纸样的网点增大比较图(图1所示)
2.1pointsincreasevaluecontrastiveanalysisthemagentainkincreasethepatternoftheoutletscomparisonchart(showninfigure1)
为例分析,可以看出,灰底白板纸样条的网点增大情况要比白卡纸的大一些。
在影响印刷品网点增大的诸因素中,就纸张而言,纸张的吸收性和粗糙度两个参数对阶调的再现有较大的影响。
这两个参数往往与印刷压力密切相关。
而在本研究中,采用的印刷压力为一个确定的值,这样,纸张的吸收性和粗糙度的差异就体现出了其对阶调的再现的影响。
Asanexampleanalysis,itcanbeseenthatgreyboardpaperpatternofthenetworkincreasesituationitisbiggerthanthewhitecardboard.Thefactorsinfluencetheprintoutletsinincrease,intermsofpaper,paperabsorbencyandroughnessofthetwoparametersontheorderofrepresentationhasagreatinfluence.Thesetwoparametersareoftencloselyrelatedtotheprintingpressure.Inthisstudy,usingtheprintingpressuretoacertainvalue,thus,theabsorbentpaperreflectsandroughnessofthedifferencesintheireffectontheorderofrepresentation.
而从前面的纸张表面性能的测试数据来看,灰底白板纸与白卡纸这两类纸,在吸收性、粗糙度上,还是存在着较为明显的差异。
白卡纸相对于灰底白板纸,它的吸收性较高,粗糙度较低(荷兰白卡纸是进口卡纸,由于制造工艺不同等原因而属例外)。
纸张较高的吸收性可能会导致网点更易于增大,而较低的粗糙度会使纸张在印刷压力的作用下表面变形较少,而且所需墨膜较薄,从而比较有利于减少网点的增大。
所以,基本上可以认为灰底白板纸在阶调再现性方面相对于白卡纸较差。
Andfromthepapersurfacepropertiesofthetestdata,grey,whitepaperandwhitecardboardpaper,andthetwoontheabsorbency,roughness,ortherearecomparativelyobviousdifferences.WhitecardboardrelativetoManilaboard,itsabsorptionishigher,lowroughness(whitecardboardisintheNetherlandsimportedpaperboard,duetoreasonssuchasmanufacturingprocessdifferentexception).Paperhighabsorbentincreasescouldleadtonetworkmoreeasily,andlowerroughnesscanmakepaperinprintingpressureundertheactionofsurfacedeformationisless,andtheinkfilmisthinner,whichisbeneficialtoreducetheincreaseofnetwork.So,basicallycanthinkManilaboardinorderthereproducibilityrelativetothepoorwhitecardboard.
2.2印刷特性曲线对比分析以品红墨各纸样的印刷特性曲线图(图2)
2.2printingcharacteristiccurveanalysisofthemagentainkprintingfeaturesofeachpatterngraph(figure2)
例分析,可以看出,白卡纸的印刷特性曲线基本上都处在灰底白板纸的下方,说明白卡纸的阶调密度误差相对较小。
可见,白卡纸的阶调再现性能要好于灰底白板纸的阶调再现性能。
Caseanalysis,itcanbeseenthatthewhitecardboardprintingcharacteristiccurvebasicallyinManilaboardbelow,sayunderstandcardorderadjustdensityerrorisrelativelysmall.Visible,whitecardboardordertonereproductionperformancebetterthanthegradualreproducethepropertiesofManilaboard.
2.3阶调密度反差对比分析
2.3orderofdensitycontrastanalysis
另一种评价印刷品阶调再现的方法是评价印刷品的阶调密度反差。
当具有较高的印刷相对反差值时,其实地密度又较高,印刷品的阶调再现性较好。
同样,以品红墨各纸样的阶调密度反差(如图3所示)为例,
Anotherevaluationprintordertonereproductionmethodistoevaluateprintorderofdensitycontrast.Whenhasthehighprintingrelativecontrastvalue,actuallytodensityishigh,thereproducibilityoftheprintisgood.Similarly,themagentainkgradualdensitycontrastofeachpattern(asshowninfig