... water and other additives, in a continuous mixer. This slurry spreads, in a uniform stream, from multiple ... As the board is actually produced upside down, this paper will form the front face of the ... belts, and sections of rollers to the shear. During this journey, the plaster core has time to set, ... and passed into a multi-level dryer. During the drying period, the excess water, which was required to ...