NC State
M. Karlsson. Drying of Paper – An Overview, the State of Paper Drying Knowledge. In The science of papermaking, Trans. of the XIIth Fund. Res. Symp. Oxford, 2001, (C.F. Baker, ed.), pp 709–736, FRC, Manchester, 2018.


The paper concerns various present and projected future drying technologies employed to dry paper and paperboard products. The topics discussed include moisture distribution and mobility within the web and how this can effect important paper properties. It is suggested that dryer sections have a much higher potential than their present role of simply drying and transporting the web from press to reel and that their future active role will be made possible by sophisticated new drying models specifically developed to predict and control web defects such as curl, mottle and others. Also covered are economics of drying alternatives for various paper and board grades and an overall assessment of future drying technologies including impingement drying, Condebelt drying, impulse drying, direct steam drying, IR and induction and microwave drying. The paper concludes with a look at further needs in fundamental and applied research in drying.

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