RADIATIVE CHARACTERIZATION OF PAPER FOR I NFRARED DYING

Some physical characteristics of both paper and sources of energy have been determined in order to model paper drying using infrared radiati on as energy input. The following points are presented : the absorptio n coefficient of dry paper in the 1 to 15 mum wavelength band; the spe ctrum of two sources (near and medium IR band) ; the model for energy distribution through the thickness of the paper sheet ; the global abs orption coefficient (integrated with respect to wavelength) as a funct ion of moisture and for two radiant sources.