造纸涂布新技术课件

PaperCoatingTechniques

造纸涂布新技术PresentedforDaewooPaper大宇纸业技术讲座April2003byJohnMoore–ChemcoInternationalJohnMoore–化联精聚化学PaperCoatingTechniques

造纸涂布新1Introduction前言Wewillreviewpapercoatingequipment,thebasicconceptswillbediscussedalongwith:我们将回顾一下涂布的设备，并依次讨论一下其基本概念 -advantagesinpaperquality对纸张的优点 -disadvantages对纸张的缺点 -operationalissues纸机操作的影响ThesethingsareimportanttoyourabilitytoproblemsolveandprovidedetailedfeedbacktoprincipleandinternalcustomerslikeTMC.这些方面对于提高解决问题的能力，并提高反馈问题的能力都是很有帮助的。Introduction前言Wewillreviewp2Fundamentalspage1

基本原理第一页Almostallcoatersconsistoftwofunctions:所有的涂布机都具有两种功能：Application上料装置metering计量装置Applicationconsistsofapplyingmorematerialthanisneededinthefinalproduct

上料是指将过量的涂料涂到纸张表面Meteringmethodsremovetheexcessinawaywhichleavesthedesiredcoatingqualityatthedesiredproductionrate

计量是指将过量的涂料从纸层移除，达到需要的涂布量Fundamentalspage1

基本原理第一页3Fundamentalspage2

基本原理第二页Wewillconsiderthefourmostpopularcoatingmethods:

我们将讨论四种比较常见的涂布方式：Bladecoatingbothbentandstiff

刮刀涂布，硬刮刀和软刮刀AirKnifeCoating

气刀式涂布RodCoating

棒刀式涂布MeteringSizePress/Roll

计量式施胶涂布/辊式Fundamentalspage2

基本原理第二页4BladevsAirknifevsRod/MeteringSizePress

刮刀式涂布和棒刀/计量式施胶涂布的比较BladevsAirknifevsRod/Meter5FactorsAffectingCoaterRunnability

影响涂布机运转的因素FactorsAffectingCoaterRunna6ApplicationandMetering–TwoNormalSteps

上料和计量–两个基本的步骤ApplicationandMetering–Two7BladeCoaters

刮刀式涂布Bladecoatersarethemostcommonlyusedmeteringdeviceinthepaper&boardindustry 在造纸工业的涂布应用中刮刀式涂布是最常见的方式ridgedblade硬刮刀bentblade软刮刀Usedwithvariousapplicationdevicesincluding:

使用不同的上料装置，包括：rollapplicator上料辊shortdwell短流着jetapplicator喷射型BladeCoaters

刮刀式涂布Bladecoate8StiffBlade–BentBladeatTip

硬刮刀–软刮刀刀尖工作情况StiffBlade–BentBladeatTi9TypicalOperationalConditionsforBladeCoaters刮刀涂布的典型工作条件Headangle0刮刀角35to5015to25Coatingsolids涂料固含量45to7045to70CoaterSpeed涂布车速To2000m/min200to1200m/minCoatingVisc.涂料粘度800-3000800-1500Bestsuitedfor最适合于LWC,pre-coatsandlowcoatweightBoardandhighcoatweightsBiggestconcern最关系到Bladestreaks刮刀条纹Bladestreaks刮刀条纹StiffBlade硬刮刀BentBlade软刮刀TypicalOperationalConditions10BladeCoaters-Ridged

刮刀涂布机–硬刮刀Ridgedbladecoateradvantages硬刮刀涂布的优点

smoothlevelsurface..Excellentroto&offsetprint

平整的纸面-优异的凹版和胶版印刷性能goodcoatweightcontrolathighspeedorsolids

高速或高固含量下的良好的涂布量控制bestLWCwhenusedwithshortdwellapplicator

当用短留着型涂布设备时，非常适合轻涂纸LWCRidgedbladedisadvantages硬刮刀涂布的缺点

poorabilitytoachievehighcoatweightatlowspeeds

在低速时很难达到高的涂布量highcoatingde-wateringathighbladepressure

刮刀压力越大，保水性越差Operationalissues操作方面

bladelines/streaks

刮刀条痕bladewearcanbehigh

刮刀磨损严重BladeCoaters-Ridged

刮刀涂布机–硬11BladeCoaters-Bent

刮刀涂布机–软刮刀Bentbladecoateradvantages

软刮刀涂布的优点samesmoothcoatingasstiffblade

像硬刮刀一样的平整纸面abilitytoobtainhighcoatweightatlowspeedorsolids

在较低的车速或固含量下，得到较高的涂布量canapplyhighcoatweightonsmoothsubstrateswithfewbladelines

在光滑的底面上得到高的涂布量，刮刀条痕较少lessproblemswithstreaksthanstiffblade

刮刀条痕较硬刮刀少Bentbladedisadvantages软刮刀涂布的缺点poorabilitytoachievelowcoatweightathighspeeds

在高速下较难达到高的涂布量highcoatingdewateringathighbladeangle/pressure

在大的刮刀角度或加压时保水性能差Operationalissuesbladelines/streaks

刮刀条痕bladewearcanbehigh

刮刀磨损严重BladeCoaters-Bent

刮刀涂布机–软刮刀12RollApplicator–TrailingBladeCoater

辊式涂布-整饰刮刀涂布机RollApplicator–TrailingBla13Coating/Application,Dwell,Metering

涂布/上料，留着，计量Coating/Application,Dwell,Me14BladeCoaterw/ShortDwellApplicator

刮刀涂布机/短留着上料装置BladeCoaterw/ShortDwellApp15BladeLoadforShortDwellvsRollApplicator

短留着和喷射式涂布头的刮刀加压BladeLoadforShortDwellvs16Coating/Application,Dwell,Metering

涂布/上料，留着，计量Coating/Application,Dwell,Me17AirKnifeCoaters

气刀式涂布机AKcoateradvantages气刀式涂布机的优点uniformthicknesscoatimportantforopticaluniformity

均一的涂层厚度，对保持均一的光学性能非常重要versatileincoatweightandtheuniformthicknessisimportantformanyfunctionalcoatings

涂布量的灵活性和均一的涂层厚度可以适应多种涂布的需求AKcoaterdisadvantages气刀式涂布机的缺点requireslowviscosity/solids&thushighdryingload

需要较低的粘度/固含量，因为干燥的需求比较大canhavepatterns

会形成花斑entrainedairandporouscoatings

空气会进入涂层形成中空的涂层Operationalissues操作方面lipsbecomeplugged…especiallyathigherspeed

喷嘴会堵赛，尤其是在高速时canonlybeusedonlowspeed&coatersunder500m/min

只能应用于低于500m/min的涂布机AirKnifeCoaters

气刀式涂布机AKcoa18AirknifeCoater

气刀式涂布机AirknifeCoater

气刀式涂布机19AirknifeCoater–doubleknifew/blowoffpan

气刀式涂布机-带吹气面板的双刀型AirknifeCoater–doubleknife20RodCoaters

棒刀式涂布机Rodcoateradvantages棒刀式涂布机的优点freeofbladelines

没有刮刀条痕rugged/excellentforbasecoats

适合于底涂Rodcoaterdisadvantages棒刀式涂布机的缺点coatingscanhavepatterns

涂层易形成花斑solidsorviscositychangecoatweight

固含量或粘度直接影响涂布量Operationalissues操作方面rodlifeislongcomparedtoblade

棒刀的寿命高于刮刀coatweightcontrolisdifficult..especiallyathighspeed涂布量的控制比较难-尤其在高速纸机上

RodCoaters

棒刀式涂布机Rodcoatera21ElementsofRodCoater–Jagenbergtype

棒刀涂布机的组成-JagenbergElementsofRodCoater–Jagen22RodAffectonCoatingSmoothness

棒刀对涂层平滑度的影响RodAffectonCoatingSmoothne23MeteringSizePressCoaters

计量式施胶涂布MSPcoateradvantages计量式施胶涂布freeofbladelines没有刮刀条痕 rugged/excellentforbasecoatsorLWC适合于底涂

canrunatspeedsover2000m/min运转车速可以超过2000m/mincancoattwosidessimultaneously同时两面涂布

lowcapitalcost成本低

RodcoaterdisadvantagesCDprofilecanbedifficult CD向的横幅控制比较难coatweightcontrollimited&sensitivetocoatingvis.

涂布量控制较难，对涂料粘度比较敏感Operationalissuesapplicatorrollconditioncriticaltogoodsurfacequality

上料辊的工作状况对纸张表面质量有很大影响MeteringSizePressCoaters

计量24MeteringSizePressCoater

计量式施胶涂布MeteringSizePressCoater

计量式25MeteringSizePressCoater

计量式施胶涂布MeteringSizePressCoater

计量式26MeteringSizePressCoater

计量式施胶涂布MeteringSizePressCoater

计量式27MeteringSizePressCoater

计量式施胶涂布MeteringSizePressCoater

计量式28Summary

总结Selectionofcoatingequipmentisacriticalstepinmakingtherightproductforthemarket

在生产市场上需要的涂布纸时第一步就是选择好涂布机的类型Understandingthefundamentalprinciplesofeacharenecessarytogainingadvanceknowledge

为了获得先进的涂布技术，了解每一种涂布机的基本工作原理是必需的Onemustweighttheadvantagesanddisadvantagesofourchoices…nopieceofequipmentiswithoutproblems

我们必须衡量每一种涂布机的优点和缺点，没有一种涂布机是完美无缺的Summary

总结Selectionofcoating29PaperCoatingTechniques

造纸涂布新技术PresentedforDaewooPaper大宇纸业技术讲座April2003byJohnMoore–ChemcoInternationalJohnMoore–化联精聚化学PaperCoatingTechniques

造纸涂布新30Introduction前言Wewillreviewpapercoatingequipment,thebasicconceptswillbediscussedalongwith:我们将回顾一下涂布的设备，并依次讨论一下其基本概念 -advantagesinpaperquality对纸张的优点 -disadvantages对纸张的缺点 -operationalissues纸机操作的影响ThesethingsareimportanttoyourabilitytoproblemsolveandprovidedetailedfeedbacktoprincipleandinternalcustomerslikeTMC.这些方面对于提高解决问题的能力，并提高反馈问题的能力都是很有帮助的。Introduction前言Wewillreviewp31Fundamentalspage1

基本原理第一页Almostallcoatersconsistoftwofunctions:所有的涂布机都具有两种功能：Application上料装置metering计量装置Applicationconsistsofapplyingmorematerialthanisneededinthefinalproduct

上料是指将过量的涂料涂到纸张表面Meteringmethodsremovetheexcessinawaywhichleavesthedesiredcoatingqualityatthedesiredproductionrate

计量是指将过量的涂料从纸层移除，达到需要的涂布量Fundamentalspage1

基本原理第一页32Fundamentalspage2

基本原理第二页Wewillconsiderthefourmostpopularcoatingmethods:

我们将讨论四种比较常见的涂布方式：Bladecoatingbothbentandstiff

刮刀涂布，硬刮刀和软刮刀AirKnifeCoating

气刀式涂布RodCoating

棒刀式涂布MeteringSizePress/Roll

计量式施胶涂布/辊式Fundamentalspage2

基本原理第二页33BladevsAirknifevsRod/MeteringSizePress

刮刀式涂布和棒刀/计量式施胶涂布的比较BladevsAirknifevsRod/Meter34FactorsAffectingCoaterRunnability

影响涂布机运转的因素FactorsAffectingCoaterRunna35ApplicationandMetering–TwoNormalSteps

上料和计量–两个基本的步骤ApplicationandMetering–Two36BladeCoaters

刮刀式涂布Bladecoatersarethemostcommonlyusedmeteringdeviceinthepaper&boardindustry 在造纸工业的涂布应用中刮刀式涂布是最常见的方式ridgedblade硬刮刀bentblade软刮刀Usedwithvariousapplicationdevicesincluding:

使用不同的上料装置，包括：rollapplicator上料辊shortdwell短流着jetapplicator喷射型BladeCoaters

刮刀式涂布Bladecoate37StiffBlade–BentBladeatTip

硬刮刀–软刮刀刀尖工作情况StiffBlade–BentBladeatTi38TypicalOperationalConditionsforBladeCoaters刮刀涂布的典型工作条件Headangle0刮刀角35to5015to25Coatingsolids涂料固含量45to7045to70CoaterSpeed涂布车速To2000m/min200to1200m/minCoatingVisc.涂料粘度800-3000800-1500Bestsuitedfor最适合于LWC,pre-coatsandlowcoatweightBoardandhighcoatweightsBiggestconcern最关系到Bladestreaks刮刀条纹Bladestreaks刮刀条纹StiffBlade硬刮刀BentBlade软刮刀TypicalOperationalConditions39BladeCoaters-Ridged

刮刀涂布机–硬刮刀Ridgedbladecoateradvantages硬刮刀涂布的优点

smoothlevelsurface..Excellentroto&offsetprint

平整的纸面-优异的凹版和胶版印刷性能goodcoatweightcontrolathighspeedorsolids

高速或高固含量下的良好的涂布量控制bestLWCwhenusedwithshortdwellapplicator

当用短留着型涂布设备时，非常适合轻涂纸LWCRidgedbladedisadvantages硬刮刀涂布的缺点

poorabilitytoachievehighcoatweightatlowspeeds

在低速时很难达到高的涂布量highcoatingde-wateringathighbladepressure

刮刀压力越大，保水性越差Operationalissues操作方面

bladelines/streaks

刮刀条痕bladewearcanbehigh

刮刀磨损严重BladeCoaters-Ridged

刮刀涂布机–硬40BladeCoaters-Bent

刮刀涂布机–软刮刀Bentbladecoateradvantages

软刮刀涂布的优点samesmoothcoatingasstiffblade

像硬刮刀一样的平整纸面abilitytoobtainhighcoatweightatlowspeedorsolids

在较低的车速或固含量下，得到较高的涂布量canapplyhighcoatweightonsmoothsubstrateswithfewbladelines

在光滑的底面上得到高的涂布量，刮刀条痕较少lessproblemswithstreaksthanstiffblade

刮刀条痕较硬刮刀少Bentbladedisadvantages软刮刀涂布的缺点poorabilitytoachievelowcoatweightathighspeeds

在高速下较难达到高的涂布量highcoatingdewateringathighbladeangle/pressure

在大的刮刀角度或加压时保水性能差Operationalissuesbladelines/streaks

刮刀条痕bladewearcanbehigh

刮刀磨损严重BladeCoaters-Bent

刮刀涂布机–软刮刀41RollApplicator–TrailingBladeCoater

辊式涂布-整饰刮刀涂布机RollApplicator–TrailingBla42Coating/Application,Dwell,Metering

涂布/上料，留着，计量Coating/Application,Dwell,Me43BladeCoaterw/ShortDwellApplicator

刮刀涂布机/短留着上料装置BladeCoaterw/ShortDwellApp44BladeLoadforShortDwellvsRollApplicator

短留着和喷射式涂布头的刮刀加压BladeLoadforShortDwellvs45Coating/Application,Dwell,Metering

涂布/上料，留着，计量Coating/Application,Dwell,Me46AirKnifeCoaters

气刀式涂布机AKcoateradvantages气刀式涂布机的优点uniformthicknesscoatimportantforopticaluniformity

均一的涂层厚度，对保持均一的光学性能非常重要versatileincoatweightandtheuniformthicknessisimportantformanyfunctionalcoatings

涂布量的灵活性和均一的涂层厚度可以适应多种涂布的需求AKcoaterdisadvantages气刀式涂布机的缺点requireslowviscosity/solids&thushighdryingload

需要较低的粘度/固含量，因为干燥的需求比较大canhavepatterns

会形成花斑entrainedairandporouscoatings

空气会进入涂层形成中空的涂层Operationalissues操作方面lipsbecomeplugged…especiallyathigherspeed

喷嘴会堵赛，尤其是在高速时canonlybeusedonlowspeed&coatersunder500m/min

只能应用于低于500m/min的涂布机AirKnifeCoaters

气刀式涂布机AKcoa47AirknifeCoater

气刀式涂布机AirknifeCoater

气刀式涂布机48AirknifeCoater–doubleknifew/blowoffpan

气刀式涂布机-带吹气面板的双刀型AirknifeCoater–doubleknife49RodCoaters

棒刀式涂布机Rodcoateradvantages棒刀式涂布机的优点freeofbladelines

没有刮刀条痕rugged/excellentforbasecoats

适合于底涂Rodcoaterdisadvantages棒刀式涂布机的缺点coatingscanhavepatterns

涂层易形成花斑solidsorviscositychangecoatweight

固含量或粘度直接影响涂布量Operationalissues操作方面rodlifeislongcomparedtoblade

棒刀的寿命高于刮刀coatweightcontrolisdifficult..especiallyathighspeed涂布量的控制比较难-尤其在高速纸机上

RodCoaters

棒刀式涂布机Rodcoatera50ElementsofRodCoater–Jagenbergtype

棒刀涂布机的组成-JagenbergElementsofRodCoater–