Transport of inert gases The permeability coefficient, K, or other equivalent quantities describe the gas permeability of paper. For air, the terms air permeability and air resistance are used. These properties can characterise the porous network structure and the practical performance of filter papers, packaging papers etc. Four mechanisms can influence the flow of gas
Authors & references
Professor Jouni Paltakari, Aalto University
Based on: Kettle, J. Moisture and fluid transport (Chapter 7). In: Niskanen, K. (ed), Paper Physics, (Book 16), Papermaking Science and Technology. 2nd edition. Jyväskylä, 2008, Finnish Paper Engineers’ Association/Paperi ja Puu Oy. pp. 265 – 294.
Corte, H., 1982. “The porosity of paper” in Handbook of Paper Science (H. F. Rance, Ed.), Elsevier, Amsterdam, vol. 2, pp. 1–70.
Bristow, J. A., 1986. “The pore structure and the sorption of liquids” in Paper, structure and properties (J. A. Bristow and P. Kolseth, Ed.) Marcel Dekker, New York, pp. 183–201.
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