How it works:

The fluid medium is fed between the distributor roller and the fleece rollers. (the amount of oil fed into the system is not decisive). The medium spreads across the entire width of the roller.

The fluid is absorbed by the open pores of the fleece roller.

The line pressure acting on the pores increases constantly as the roller rotates on the surface of the sheet metal; the roller begins to flatten. The fluid forms a wedge between the fleece and the surface of the sheet metal.

Depending on the pressure the porosity of the fleece roller reaches practically zero. The media is squeezed onto the surface absolutely homogeneously. The film thickness decreases as the contact pressure applied by the roller is increased.

The line pressure acting on the roller (pores) drops again, the pores open and soak back up a certain residual amount of the fluid like a sponge.