Method and device for producing a coherent layer of even thickness of liquid or melt on a rotating disk

1. In a method for continuously producing a coherent layer of a liquid/melt of even thickness by means of centrifugal action along the entire periphery of a rotating disk ( 13 , 113 ), the improvement comprising supplying the liquid/melt to the disk around its entire axis of rotation from a distributing means ( 12 , 112 ) and exiting the disk as individual droplets, wherein the distributing means ( 12 , 112 ) for distributing the liquid/melt onto the disk ( 13 , 113 ) is rotating at essentially the same speed and direction of rotation as the disk, and the liquid/melt under the influence of centrifugal action circumferentially undergoes a spreading and change in velocity across the disk ( 13 , 113 ) in contact with the same.

2. The method of claim 1 , further comprising mechanically stirring the liquid/melt in the distribution means ( 12 , 112 ).

3. The method of claim 1 , wherein an adjustment of the flow is produced in the distribution means ( 12 , 112 ) at the disk ( 13 , 113 ).

4. The method of claim 1 , wherein the spreading and change in velocity of the liquid/melt across the disk ( 13 , 113 ) is produced by forcing the liquid/melt to pass an arresting notched deviation/labyrinth ( 21 ) between the disk ( 13 , 113 ) and the distribution means ( 12 , 112 ).

5. The method of claim 4 , wherein the passage through the arresting notched deviation/labyrinth ( 21 ) is adjustable.

6. Particles and droplets produced according to the method of claim 1 ; said particles and droplets having a diameter median value between 98 and 114 μm and a mean diameter between 98.04 and 112.7 μm with a standard deviation between 8.66 and 13.50.

7. A device for continuously producing a layer of a liquid/melt of even thickness by means of centrifugal action along the entire periphery of a rotating disk ( 13 , 113 ) comprising a rotor ( 10 , 110 ) and a disk ( 13 , 113 ), each having an upper side and underside, a distribution means ( 12 , 112 ), which is arranged adjacent to the disk, which distributes the liquid/melt onto the disk ( 13 , 113 ), a cavity ( 14 , 114 A, 114 B) around the entire disk around the axis of the rotor, and a space ( 19 ) between the disk and the distribution means, said space including an arresting notched deviation/labyrinth ( 21 ) radially outside the cavity and inside the periphery of the disk.

8. The device of claim 7 , wherein the space ( 19 ) is zig-zag-shaped and consists of ring-shaped ridges and grooves which are made in the underside of the distribution means ( 12 , 112 ) and the upper side of the disk ( 13 , 113 ), respectively.

9. The device of claim 8 , further comprising an exchangeable washer ( 20 ) interposed between the distribution means ( 12 , 112 ) and the disk ( 13 , 113 ) to allow adjusting of the height of the zig-zag-shaped space ( 19 ).

10. The device of claim 8 , wherein the edges ( 23 ) in the zig-zag-shaped space ( 19 ) are beveled with an angle α.

11. The device of claim 10 , wherein the angle α is between 0 and 60°.

12. The device of claim 11 , wherein the angle α is between 1° and 5°.

13. The device of claim 7 , further comprising a plurality of wings ( 15 ) arranged at equal spacing from each other in the cavity ( 14 ) towards its inner wall.

14. The device of claim 7 , wherein the distribution means further comprises a second distribution means ( 112 B) arranged on a first distribution means ( 112 A), a lower projecting part of the first distribution means including a disk ( 113 ) for the second distribution means.