USE OF STEAM SHOWERS TO CONDITION PRESS FABRICS

摘要

Since 1969 more than fifty non-turbulent steam injector showers have been installed over uhle boxes tornheat press fabrics. A hot fabric runs drier, cleaner and more open. Mill personnel using steam showers tornheat their fabrics report that steam application makes it easier to remove contaminants, particularly waxesrnfrom the system thereby reducing cleaning chemical usage and in some cases eliminating the need to batchrnwash. Dryer limited production increases of more than 1% or equivalent steam savings have beenrndocumented by heating one or more press fabrics with a steam shower over the uhle box. This paperrndiscusses the effect that steam application has on fabric temperature, moisture and porosity as well as itsrneffect on dryer steam reduction and increased machine speed. It also outlines which fabrics and paperrngrades benefit the most from steam application.