造紙涂布新技術(shù)課件

PaperCoatingTechniques

造紙涂布新技術(shù)PresentedforDaewooPaper大宇紙業(yè)技術(shù)講座April2003byJohnMoore–ChemcoInternationalJohnMoore–化聯(lián)精聚化學PaperCoatingTechniques

造紙涂布新1Introduction前言Wewillreviewpapercoatingequipment,thebasicconceptswillbediscussedalongwith:我們將回顧一下涂布的設(shè)備，并依次討論一下其基本概念 -advantagesinpaperquality對紙張的優(yōu)點 -disadvantages對紙張的缺點 -operationalissues紙機操作的影響ThesethingsareimportanttoyourabilitytoproblemsolveandprovidedetailedfeedbacktoprincipleandinternalcustomerslikeTMC.這些方面對于提高解決問題的能力，并提高反饋問題的能力都是很有幫助的。Introduction前言Wewillreviewp2Fundamentalspage1

基本原理第一頁Almostallcoatersconsistoftwofunctions:所有的涂布機都具有兩種功能：Application上料裝置metering計量裝置Applicationconsistsofapplyingmorematerialthanisneededinthefinalproduct

上料是指將過量的涂料涂到紙張表面Meteringmethodsremovetheexcessinawaywhichleavesthedesiredcoatingqualityatthedesiredproductionrate

計量是指將過量的涂料從紙層移除，達到需要的涂布量Fundamentalspage1

基本原理第一頁3Fundamentalspage2

基本原理第二頁Wewillconsiderthefourmostpopularcoatingmethods:

我們將討論四種比較常見的涂布方式：Bladecoatingbothbentandstiff

刮刀涂布，硬刮刀和軟刮刀AirKnifeCoating

氣刀式涂布RodCoating

棒刀式涂布MeteringSizePress/Roll

計量式施膠涂布/輥式Fundamentalspage2

基本原理第二頁4BladevsAirknifevsRod/MeteringSizePress

刮刀式涂布和棒刀/計量式施膠涂布的比較BladevsAirknifevsRod/Meter5FactorsAffectingCoaterRunnability

影響涂布機運轉(zhuǎn)的因素FactorsAffectingCoaterRunna6ApplicationandMetering–TwoNormalSteps

上料和計量–兩個基本的步驟ApplicationandMetering–Two7BladeCoaters

刮刀式涂布Bladecoatersarethemostcommonlyusedmeteringdeviceinthepaper&boardindustry 在造紙工業(yè)的涂布應用中刮刀式涂布是最常見的方式ridgedblade硬刮刀bentblade軟刮刀Usedwithvariousapplicationdevicesincluding:

使用不同的上料裝置，包括：rollapplicator上料輥shortdwell短流著jetapplicator噴射型BladeCoaters

刮刀式涂布Bladecoate8StiffBlade–BentBladeatTip

硬刮刀–軟刮刀刀尖工作情況StiffBlade–BentBladeatTi9TypicalOperationalConditionsforBladeCoaters刮刀涂布的典型工作條件Headangle0刮刀角35to5015to25Coatingsolids涂料固含量45to7045to70CoaterSpeed涂布車速To2000m/min200to1200m/minCoatingVisc.涂料粘度800-3000800-1500Bestsuitedfor最適合于LWC,pre-coatsandlowcoatweightBoardandhighcoatweightsBiggestconcern最關(guān)系到Bladestreaks刮刀條紋Bladestreaks刮刀條紋StiffBlade硬刮刀BentBlade軟刮刀TypicalOperationalConditions10BladeCoaters-Ridged

刮刀涂布機–硬刮刀Ridgedbladecoateradvantages硬刮刀涂布的優(yōu)點

smoothlevelsurface..Excellentroto&offsetprint

平整的紙面-優(yōu)異的凹版和膠版印刷性能goodcoatweightcontrolathighspeedorsolids

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

當用短留著型涂布設(shè)備時，非常適合輕涂紙LWCRidgedbladedisadvantages硬刮刀涂布的缺點

poorabilitytoachievehighcoatweightatlowspeeds

在低速時很難達到高的涂布量highcoatingde-wateringathighbladepressure

刮刀壓力越大，保水性越差Operationalissues操作方面

bladelines/streaks

刮刀條痕bladewearcanbehigh

刮刀磨損嚴重BladeCoaters-Ridged

刮刀涂布機–硬11BladeCoaters-Bent

刮刀涂布機–軟刮刀Bentbladecoateradvantages

軟刮刀涂布的優(yōu)點samesmoothcoatingasstiffblade

像硬刮刀一樣的平整紙面abilitytoobtainhighcoatweightatlowspeedorsolids

在較低的車速或固含量下，得到較高的涂布量canapplyhighcoatweightonsmoothsubstrateswithfewbladelines

在光滑的底面上得到高的涂布量，刮刀條痕較少lessproblemswithstreaksthanstiffblade

刮刀條痕較硬刮刀少Bentbladedisadvantages軟刮刀涂布的缺點poorabilitytoachievelowcoatweightathighspeeds

在高速下較難達到高的涂布量highcoatingdewateringathighbladeangle/pressure

在大的刮刀角度或加壓時保水性能差Operationalissuesbladelines/streaks

刮刀條痕bladewearcanbehigh

刮刀磨損嚴重BladeCoaters-Bent

刮刀涂布機–軟刮刀12RollApplicator–TrailingBladeCoater

輥式涂布-整飾刮刀涂布機RollApplicator–TrailingBla13Coating/Application,Dwell,Metering

涂布/上料，留著，計量Coating/Application,Dwell,Me14BladeCoaterw/ShortDwellApplicator

刮刀涂布機/短留著上料裝置BladeCoaterw/ShortDwellApp15BladeLoadforShortDwellvsRollApplicator

短留著和噴射式涂布頭的刮刀加壓BladeLoadforShortDwellvs16Coating/Application,Dwell,Metering

涂布/上料，留著，計量Coating/Application,Dwell,Me17AirKnifeCoaters

氣刀式涂布機AKcoateradvantages氣刀式涂布機的優(yōu)點uniformthicknesscoatimportantforopticaluniformity

均一的涂層厚度，對保持均一的光學性能非常重要versatileincoatweightandtheuniformthicknessisimportantformanyfunctionalcoatings

涂布量的靈活性和均一的涂層厚度可以適應多種涂布的需求AKcoaterdisadvantages氣刀式涂布機的缺點requireslowviscosity/solids&thushighdryingload

需要較低的粘度/固含量，因為干燥的需求比較大canhavepatterns

會形成花斑entrainedairandporouscoatings

空氣會進入涂層形成中空的涂層Operationalissues操作方面lipsbecomeplugged…especiallyathigherspeed

噴嘴會堵賽，尤其是在高速時canonlybeusedonlowspeed&coatersunder500m/min

只能應用于低于500m/min的涂布機AirKnifeCoaters

氣刀式涂布機AKcoa18AirknifeCoater

氣刀式涂布機AirknifeCoater

氣刀式涂布機19AirknifeCoater–doubleknifew/blowoffpan

氣刀式涂布機-帶吹氣面板的雙刀型AirknifeCoater–doubleknife20RodCoaters

棒刀式涂布機Rodcoateradvantages棒刀式涂布機的優(yōu)點freeofbladelines

沒有刮刀條痕rugged/excellentforbasecoats

適合于底涂Rodcoaterdisadvantages棒刀式涂布機的缺點coatingscanhavepatterns

涂層易形成花斑solidsorviscositychangecoatweight

固含量或粘度直接影響涂布量Operationalissues操作方面rodlifeislongcomparedtoblade

棒刀的壽命高于刮刀coatweightcontrolisdifficult..especiallyathighspeed涂布量的控制比較難-尤其在高速紙機上

RodCoaters

棒刀式涂布機Rodcoatera21ElementsofRodCoater–Jagenbergtype

棒刀涂布機的組成-JagenbergElementsofRodCoater–Jagen22RodAffectonCoatingSmoothness

棒刀對涂層平滑度的影響RodAffectonCoatingSmoothne23MeteringSizePressCoaters

計量式施膠涂布MSPcoateradvantages計量式施膠涂布freeofbladelines沒有刮刀條痕 rugged/excellentforbasecoatsorLWC適合于底涂

canrunatspeedsover2000m/min運轉(zhuǎn)車速可以超過2000m/mincancoattwosidessimultaneously同時兩面涂布

lowcapitalcost成本低

RodcoaterdisadvantagesCDprofilecanbedifficult CD向的橫幅控制比較難coatweightcontrollimited&sensitivetocoatingvis.

涂布量控制較難，對涂料粘度比較敏感Operationalissuesapplicatorrollconditioncriticaltogoodsurfacequality

上料輥的工作狀況對紙張表面質(zhì)量有很大影響MeteringSizePressCoaters

計量24MeteringSizePressCoater

計量式施膠涂布MeteringSizePressCoater

計量式25MeteringSizePressCoater

計量式施膠涂布MeteringSizePressCoater

計量式26MeteringSizePressCoater

計量式施膠涂布MeteringSizePressCoater

計量式27MeteringSizePressCoater

計量式施膠涂布MeteringSizePressCoater

計量式28Summary

總結(jié)Selectionofcoatingequipmentisacriticalstepinmakingtherightproductforthemarket

在生產(chǎn)市場上需要的涂布紙時第一步就是選擇好涂布機的類型Understandingthefundamentalprinciplesofeacharenecessarytogainingadvanceknowledge

為了獲得先進的涂布技術(shù)，了解每一種涂布機的基本工作原理是必需的Onemustweighttheadvantagesanddisadvantagesofourchoices…nopieceofequipmentiswithoutproblems

我們必須衡量每一種涂布機的優(yōu)點和缺點，沒有一種涂布機是完美無缺的Summary

總結(jié)Selectionofcoating29PaperCoatingTechniques

造紙涂布新技術(shù)PresentedforDaewooPaper大宇紙業(yè)技術(shù)講座April2003byJohnMoore–ChemcoInternationalJohnMoore–化聯(lián)精聚化學PaperCoatingTechniques

造紙涂布新30Introduction前言Wewillreviewpapercoatingequipment,thebasicconceptswillbediscussedalongwith:我們將回顧一下涂布的設(shè)備，并依次討論一下其基本概念 -advantagesinpaperquality對紙張的優(yōu)點 -disadvantages對紙張的缺點 -operationalissues紙機操作的影響ThesethingsareimportanttoyourabilitytoproblemsolveandprovidedetailedfeedbacktoprincipleandinternalcustomerslikeTMC.這些方面對于提高解決問題的能力，并提高反饋問題的能力都是很有幫助的。Introduction前言Wewillreviewp31Fundamentalspage1

基本原理第一頁Almostallcoatersconsistoftwofunctions:所有的涂布機都具有兩種功能：Application上料裝置metering計量裝置Applicationconsistsofapplyingmorematerialthanisneededinthefinalproduct

上料是指將過量的涂料涂到紙張表面Meteringmethodsremovetheexcessinawaywhichleavesthedesiredcoatingqualityatthedesiredproductionrate

計量是指將過量的涂料從紙層移除，達到需要的涂布量Fundamentalspage1

基本原理第一頁32Fundamentalspage2

基本原理第二頁Wewillconsiderthefourmostpopularcoatingmethods:

我們將討論四種比較常見的涂布方式：Bladecoatingbothbentandstiff

刮刀涂布，硬刮刀和軟刮刀AirKnifeCoating

氣刀式涂布RodCoating

棒刀式涂布MeteringSizePress/Roll

計量式施膠涂布/輥式Fundamentalspage2

基本原理第二頁33BladevsAirknifevsRod/MeteringSizePress

刮刀式涂布和棒刀/計量式施膠涂布的比較BladevsAirknifevsRod/Meter34FactorsAffectingCoaterRunnability

影響涂布機運轉(zhuǎn)的因素FactorsAffectingCoaterRunna35ApplicationandMetering–TwoNormalSteps

上料和計量–兩個基本的步驟ApplicationandMetering–Two36BladeCoaters

刮刀式涂布Bladecoatersarethemostcommonlyusedmeteringdeviceinthepaper&boardindustry 在造紙工業(yè)的涂布應用中刮刀式涂布是最常見的方式ridgedblade硬刮刀bentblade軟刮刀Usedwithvariousapplicationdevicesincluding:

使用不同的上料裝置，包括：rollapplicator上料輥shortdwell短流著jetapplicator噴射型BladeCoaters

刮刀式涂布Bladecoate37StiffBlade–BentBladeatTip

硬刮刀–軟刮刀刀尖工作情況StiffBlade–BentBladeatTi38TypicalOperationalConditionsforBladeCoaters刮刀涂布的典型工作條件Headangle0刮刀角35to5015to25Coatingsolids涂料固含量45to7045to70CoaterSpeed涂布車速To2000m/min200to1200m/minCoatingVisc.涂料粘度800-3000800-1500Bestsuitedfor最適合于LWC,pre-coatsandlowcoatweightBoardandhighcoatweightsBiggestconcern最關(guān)系到Bladestreaks刮刀條紋Bladestreaks刮刀條紋StiffBlade硬刮刀BentBlade軟刮刀TypicalOperationalConditions39BladeCoaters-Ridged

刮刀涂布機–硬刮刀Ridgedbladecoateradvantages硬刮刀涂布的優(yōu)點

smoothlevelsurface..Excellentroto&offsetprint

平整的紙面-優(yōu)異的凹版和膠版印刷性能goodcoatweightcontrolathighspeedorsolids

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

當用短留著型涂布設(shè)備時，非常適合輕涂紙LWCRidgedbladedisadvantages硬刮刀涂布的缺點

poorabilitytoachievehighcoatweightatlowspeeds

在低速時很難達到高的涂布量highcoatingde-wateringathighbladepressure

刮刀壓力越大，保水性越差Operationalissues操作方面

bladelines/streaks

刮刀條痕bladewearcanbehigh

刮刀磨損嚴重BladeCoaters-Ridged

刮刀涂布機–硬40BladeCoaters-Bent

刮刀涂布機–軟刮刀Bentbladecoateradvantages

軟刮刀涂布的優(yōu)點samesmoothcoatingasstiffblade

像硬刮刀一樣的平整紙面abilitytoobtainhighcoatweightatlowspeedorsolids

在較低的車速或固含量下，得到較高的涂布量canapplyhighcoatweightonsmoothsubstrateswithfewbladelines

在光滑的底面上得到高的涂布量，刮刀條痕較少lessproblemswithstreaksthanstiffblade

刮刀條痕較硬刮刀少Bentbladedisadvantages軟刮刀涂布的缺點poorabilitytoachievelowcoatweightathighspeeds

在高速下較難達到高的涂布量highcoatingdewateringathighbladeangle/pressure

在大的刮刀角度或加壓時保水性能差Operationalissuesbladelines/streaks

刮刀條痕bladewearcanbehigh

刮刀磨損嚴重BladeCoaters-Bent

刮刀涂布機–軟刮刀41RollApplicator–TrailingBladeCoater

輥式涂布-整飾刮刀涂布機RollApplicator–TrailingBla42Coating/Application,Dwell,Metering

涂布/上料，留著，計量Coating/Application,Dwell,Me43BladeCoaterw/ShortDwellApplicator

刮刀涂布機/短留著上料裝置BladeCoaterw/ShortDwellApp44BladeLoadforShortDwellvsRollApplicator

短留著和噴射式涂布頭的刮刀加壓BladeLoadforShortDwellvs45Coating/Application,Dwell,Metering

涂布/上料，留著，計量Coating/Application,Dwell,Me46AirKnifeCoaters

氣刀式涂布機AKcoateradvantages氣刀式涂布機的優(yōu)點uniformthicknesscoatimportantforopticaluniformity

均一的涂層厚度，對保持均一的光學性能非常重要versatileincoatweightandtheuniformthicknessisimportantformanyfunctionalcoatings

涂布量的靈活性和均一的涂層厚度可以適應多種涂布的需求AKcoaterdisadvantages氣刀式涂布機的缺點requireslowviscosity/solids&thushighdryingload

需要較低的粘度/固含量，因為干燥的需求比較大canhavepatterns

會形成花斑entrainedairandporouscoatings

空氣會進入涂層形成中空的涂層Operationalissues操作方面lipsbecomeplugged…especiallyathigherspeed

噴嘴會堵賽，尤其是在高速時canonlybeusedonlowspeed&coatersunder500m/min

只能應用于低于500m/min的涂布機AirKnifeCoaters

氣刀式涂布機AKcoa47AirknifeCoater

氣刀式涂布機AirknifeCoater

氣刀式涂布機48AirknifeCoater–doubleknifew/blowoffpan

氣刀式涂布機-帶吹氣面板的雙刀型AirknifeCoater–doubleknife49RodCoaters

棒刀式涂布機Rodcoateradvantages棒刀式涂布機的優(yōu)點freeofbladelines

沒有刮刀條痕rugged/excellentforbasecoats

適合于底涂Rodcoaterdisadvantages棒刀式涂布機的缺點coatingscanhavepatterns

涂層易形成花斑solidsorviscositychangecoatweight

固含量或粘度直接影響涂布量Operationalissues操作方面rodlifeislongcomparedtoblade

棒刀的壽命高于刮刀coatweightcontrolisdifficult..especiallyathighspeed涂布量的控制比較難-尤其在高速紙機上

RodCoaters

棒刀式涂布機Rodcoatera50ElementsofRodCoater–Jagenbergtype

棒刀涂布機的組成-JagenbergElementsofRodCoater–