Improvements in and relating to apparatus for the de-aeration of viscous liquids

Viscose is continuously de-aerated by feeding it through a vacuum container 1 having a series of conical plates 3-8 disposed one below the other, the viscose being continuously fed through an inlet pipe 9 and branch pipes 11-16 to the apex of each plate, down which it flows as a thin layer, and being continuously withdrawn from the container at 10. Preferably, the rim of each succeeding plate from the top is spaced further from the wall of the container, and each rim may be serrated. The branch pipes 11-16 may have progressively smaller internal diameters to ensure that the volumetric rate of flow of the viscose on each plate is proportional to the area of the plate. The vacuum is preferably maintained constant by means of, for example, a steam ejector connected to pipe 2. Specification 524,209, [Group III], is referred to.ALSO:A vacuum chamber for the continuous de-aeration of viscous liquids, e.g. viscose, is provided with a series of conical plates 3-8, disposed one below the other, to the apices of which the liquid is continuously fed from an inlet pipe 9 and branch pipes 11-16, the liquid flowing down the plates as a thin layer and being continuously withdrawn from the chamber at 10. Preferably the rim of each succeeding plate from the top is spaced further from the chamber wall, and each rim may be serrated. The branch pipes 11-16 may have progressively smaller internal diameters to ensure that the volumetric rate of flow of the viscose on each plate is proportional to the area of the plate. The vacuum is preferably maintained constant by means of, for example, a steam ejector connected to pipe 2. Specification 524,209 is referred to.