Abstract: A moisture profiling apparatus is provided for use with continuous running webs, particularly paper but useful for other permeable webs, having a series of adjacent compartments extending transversely of the web guide means and provided with means to selectively vary the quantity, velocity and temperature of gaseous drying medium impinging on the surface of the web, so as to modify variations in the moisture profile transversely of the web. The profiling hood is generally used in combination with a dryer drum, which may be a hollow drum provided with a plurality of transversely extending vacuum chambers and means to control the vacuum conditions in the drum chambers, so as to further modify the flow conditions of the gaseous drying medium, usually air.

Abstract: A whitewater system is provided for handling at high velocity the large quantities of water that are circulated in the high speed forming of pulp using a wire and forming wheel. Use of a centrifugal collector to transfer water from within a forming loop at velocities approaching that of wire speed permits the water to be partially deaerated automatically, so that return as white water to the pulping system is facilitated.