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1、ChapterForewordBook3ForestProductsChemistrySerieseditorsJohanGullichsen,HelsinkiUniversityofTechnologyHannuPaulapuro,HelsinkiUniversityofTechnologyBookeditorPerStenius,HelsinkiUniversityofTechnologyHeikkiPakarinen,UPM-KymmeneOySeriesreviewerBrianAttwood,St.Anne'sPapera
2、ndPaperboardDevelopments,LtdBookreviewerThomasJoyce,WesternMichiganUniversityCyrilHeitner,PAPRICANPublishedincooperationwiththeFinnishPaperEngineers'AssociationandTAPPIForewordJohanGullichsenandHannuPaulapuroPAPERMAKINGSCIENCEANDTECHNOLOGYPapermakingisavast,multidiscip
3、linarytechnologythathasexpandedtremendouslyinrecentyears.Significantadvanceshavebeenmadeinallareasofpapermaking,includingrawmaterials,productiontechnology,processcontrolandendproducts.Thecomplexityoftheprocesses,thescaleofoperationandproductionspeedsleavelittleroomfore
4、rrorormalfunction.Modernpapermakingwouldnotbepossiblewithoutapropercommandofagreatvarietyoftechnologies,inparticularadvancedprocesscontrolanddiagnosticmethods.Notonlyhasthetechnologyprogressedandnewtechnologyemerged,butourunderstandingofthefundamentalsofunitprocesses,r
5、awmaterialsandproductpropertieshasalsodeepenedconsiderably.Thevariationsintheindustry抯heterogeneousrawmaterials,andthesophisticationofpulpingandpapermakingprocessesrequireaprofoundunderstandingofthemechanismsinvolved.Paperandboardproductsarecomplexinstructureandcontain
6、manydifferentcomponents.Therequirementsplacedonthewaytheseproductsperformarewide,variedandoftenconflicting.Thoseinvolvedinproductdevelopmentwillcontinuetoneedaprofoundunderstandingofthechemistryandphysicsofbothrawmaterialsandproductstructures.Paperhasplayedavitalrolein
7、theculturaldevelopmentofmankind.Itstillhasakeyroleincommunicationandisneededinmanyotherareasofoursociety.Thereisnodoubtthatitwillcontinuetohaveanimportantplaceinthefuture.Papermust,however,maintainitscompetitivenessthroughcontinuousproductdevelopmentinordertomeettheeve
8、r-increasingdemandsonitsperformance.Itmustalsobeproducedeconomicallybyenvironment-friendlyprocesseswiththeminimumuseo