Drying of Sensitized Gravure Tissue.

In the process of drying sensitized gravure tissue on a ferrotype it was required to establish reliable drying conditions in which tissue could be uniformly dried free of defects. Drying rate data were obtained experimentally where temperature, relative humidity and air velocity were varied. From curves of these data the duration of the constant rate and falling rate periods of drying were found. The results indicated desirable conditions during the falling rate period to be 75 - 80 F dry bulk temperature, 75% relative humidity and 600 fpm air velocity. Lower relative humidity during the constant rate period was advantageous in reducing the elapsed drying time.