ABSTRACT
The drying of paper is accomplished by two interdependent actions: heat transfer and mass transfer. Heating of the water in a sheet of paper is accomplished by contacting the sheet with the hot surface of a steam heated dryer. The sheet, which is formed in the forming section and consolidated and dewatered to a certain extent in the press section, enters the dryer section for the removal of remaining extra water in its structure. Although the main function of drying is to remove the remaining extra water in the sheet, several properties of the sheet are influenced by the drying process. A prefabricated core out of multifilament, multifilament twisted yarn or monofilament is coated through extrusion. In monofilament woven dryer fabrics, single monofilament yarns, mostly with a round cross section and with different diameters, are also used as filling. Most of the woven monofilament fabrics used is made of round and flat yarns.
