forest resources and sustainable management(上)

forest resources and sustainable management(上)

ID:7304917

大小:466.34 KB

页数:119页

时间:2018-02-11

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1、ChapterForewordBook2ForestResourcesandSustainableManagementSerieseditorsJohanGullichsen,HelsinkiUniversityofTechnologyHannuPaulapuro,HelsinkiUniversityofTechnologyBookeditorSeppoKellom鋕i,UniversityofJoensuuSeriesreviewerBrianAttwood,St.Anne'sPaperandPaperboardCo.LtdBookreviewerDesmondSmith,Acro

2、woodCorporationPublishedincooperationwiththeFinnishPaperEngineers'AssociationandTAPPIForewordJohanGullichsenandHannuPaulapuroPAPERMAKINGSCIENCEANDTECHNOLOGYPapermakingisavast,multidisciplinarytechnologythathasexpandedtremendouslyinrecentyears.Significantadvanceshavebeenmadeinallareasofpapermaki

3、ng,includingrawmaterials,productiontechnology,processcontrolandendproducts.Thecomplexityoftheprocesses,thescaleofoperationandproductionspeedsleavelittleroomforerrorormalfunction.Modernpapermakingwouldnotbepossiblewithoutapropercommandofagreatvarietyoftechnologies,inparticularadvancedprocesscont

4、rolanddiagnosticmethods.Notonlyhasthetechnologyprogressedandnewtechnologyemerged,butourunderstandingofthefundamentalsofunitprocesses,rawmaterialsandproductpropertieshasalsodeepenedconsiderably.Thevariationsintheindustry'sheterogeneousrawmaterials,andthesophisticationofpulpingandpapermakingproce

5、ssesrequireaprofoundunderstandingofthemechanismsinvolved.Paperandboardproductsarecomplexinstructureandcontainmanydifferentcomponents.Therequirementsplacedonthewaytheseproductsperformarewide,variedandoftenconflicting.Thoseinvolvedinproductdevelopmentwillcontinuetoneedaprofoundunderstandingofthec

6、hemistryandphysicsofbothrawmaterialsandproductstructures.Paperhasplayedavitalroleintheculturaldevelopmentofmankind.Itstillhasakeyroleincommunicationandisneededinmanyotherareasofoursociety.Thereisnodoubtthatitwillcontinuetohaveanimportantplaceinthefuture.Papermust,however,maintainitscompetitiven

7、essthroughcontinuousproductdevelopmentinordertomeettheever-increasingdemandsonitsperformance.Itmustalsobeproducedeconomicallybyenvironment-friendlyprocesseswiththeminimumuseofresources.Tomeetthesechallenges,everyoneworkinginthisfi

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