In a conventional chamber filter press, the filter cake is formed in layers until the chamber is completely filled with solids. As the filter cake is being formed, its permeability and flow rate decreases as the solids increase in the chamber.
Intense compressible products reduce the cake permeability causing long filtration cycles and increased operating costs.
The unproductive phase of the pressure filtration, where the flow rates are already greatly reduced, is replaced by squeezing with membranes.