| abstract |
The present invention relates to a method of impregnating paper with a suspensionnof a molecular sieve in waterglass, such as soda waterglass or potassium waterglass,nwherein the impregnated paper can be used as a dehumidifying element, andnwherein the method comprises the steps ofn a) providing a piece of paper, such as facing paper and/or fluted paper; b) immersing the paper into a highly concentrated waterglass solution in which anmolecular sieve has been suspended, at a temperature in the range of 45-95°C,nwherein said suspension of highly concentrated waterglass/molecular sieve has anviscosity of at least 350 mPa.s at a temperature of 45°C; and c) cooling the immersed paper with air at a temperature of at most 35°C and preferablynat most 25°C. |