the upper delimiting surface 41 b in this case the geometries between the edge region 21 a and the inlet opening should be arranged so that the tangent tx which can be considered to represent a kind of median vector for the oil excess which normally squirts out in a divergent manner of the contact line x deviates by a maximum of 15 u00b0 from at least one of the imaginary straight lines y 1 and y 2 that extend respectively between the contact line x and the lower delimiting surface 41 a and between the contact line x and the upper delimiting surface 41 b of the inlet opening 41 furthermore the inlet opening 41 should be positioned close to the upstream edge region 21 a suitably spaced about 10 150 mm but more preferably at a maximum of 100 mm from the edge region 21 a the device according to fig i functions in the following manner when the machine is started up for operation the inner surface of the belt is provided with an oil film in order to lubricate between the belt 6 and the pressing surface 21 of the shoe element 2 but also in order to cool the shoe press unit oil supply usually takes place in a number of different positions including through the distribution chamber 7 which lubricates in the central zone of the pressing surface 21 and also usually at least somewhere else directly on the inner surface of the belt the shoe element 2 exerts through the force exerted by the pressing unit 3 5 a pressure against a counter roll not shown so that a fibrous.