Coating Head, with Movable Rod

A coating head with movable rod, comprising:

• a fluid passage channel, which opens into a fluid discharge region and is delimited by a first edge and a second edge parallel to each other, the fluid being intended to form a coating on a substrate arranged on a rotating roller located in the discharge region and
• a movable rod that partially delimits the fluid discharge region and is arranged following the first edge of the fluid passage channel tangent to it, the movable rod being located so that the minimum distance between its perimeter and the substrate is equal to or less than between 0.5 and 2 times the thickness of the coating;
• wherein said coating head also comprises an inlet lip provided with:
• a straight internal side, which forms a second angle with the plane defined by the centre of the rod and the generatrix of the rod closest to the substrate, a portion of the internal side of the inlet lip defining the second edge of the fluid passage channel;
• a flat face arranged forming a first angle with the straight internal side and a third angle with the plane tangent to the movable rod that passes through the generatrix of the perimeter of said movable rod closest to the substrate;
• and
• an external side provided with a step.