124 premetered onto the material web 112 or the screen or wire fabric belt 114 an equalization device 130 which in the embodiment according to fig2 comprises a scraper device 132 but which may be designed in principle as any other known doctor knife or equalization device is positioned downstream from the coating mechanism 120 the equalization device 130 smooths the coating medium 124 applied and removes any excess coating medium 124 applied to return it via an intermediate cleaning step to the feed flow m to the spray coating mechanism 120 corresponding to the embodiment of fig1 the roll 118 also has a suction zone 128 0083 fig3 depicts another embodiment of a coating device according to the invention which corresponds essentially to that of fig1 analogous parts are consequently identified in fig3 by the same reference characters as in fig1 but increased by the number 200 the coating device 210 according to fig3 is described below to the extent that it differs from the coating device 10 according to fig1 whose description is otherwise hereby referred to the coating device 210 according to fig3 differs from the embodiment according to fig1 in particular in that the coating mechanism 220 is positioned on the side of the material web 212 facing the roll 218 the coating mechanism 220 is in principle designed exactly as has been described for the coating mechanism 20 with reference to fig6 however the boundary walls of the coating mechanism 220 are in sliding contact with.