loading hose 37a shown in fig4 by whose means the tip area of the coating blade 31 is loaded towards the roll face b in the embodiment shown in fig4 the second loading member 37a is attached to the same holder 38 with the loading hose 37 but if necessary the second loading member 37a can be mounted in a separate holder of its own not shown in the embodiment shown in fig4 the second loading member 37a can be shifted in the horizontal direction i e substantially towards the roll face b and away from the roll face together with the first loading hose 37 or an equivalent loading member by shifting the holder 38 by means of the regulation device 39 by means of the second loading member 37a the tip 31a of the coating blade 31 is substantially prevented from rising apart from the roll face b whereas by means of the first loading member 37 the quantity of coating agent is regulated in the conventional way thus by means of this twin loading separation of the tip 31a of the coating blade from the formed coating agent layer f is prevented whereby cavitation in the area of the.