Filter element of a filter device and filter device

A filter device (10) for filtering a fluid, comprising:

• an openable filter housing (16);
• a filter element (32) exchangeably and removeably arranged within the filter housing (16), the filter element including
• an annular closed filter medium (34) defining an axis and having two axial end faces;
• at least one end member (36, 38) secured to one of said axial end faces, said at least one end member (36, 38) including
• a contact section arranged on an axially outwardly facing side of said at least one end member (36, 38);
• an annular anti-drain membrane (44) that is arranged on an outwardly facing side of the at least one end member (38) facing away from the filter medium (34), said anti-drain membrane (44) operable for opening and closing at least one fluid opening (26) of the filter housing (16), said anti-drain membrane (44) including
• a back (56) that is facing and movable into a position against the at least one end member (38);
• wherein the anti-drain membrane (44), in a maximum open state, abuts against and rests flat upon a surface of said contact section (60) of the at least one end member (38) that is facing the back (56);
• wherein the surface of the contact section (60) that is facing the back (56) of the anti-drain membrane (44) includes
• at least one relief-like adhesion disturbance area (64) for disturbing adhesion of the anti-drain membrane (44) to the contact section (60) of the at least one end member (38);
• wherein the at least one adhesion disturbance area has a plurality of radially extending recesses (64), the width of each recess being substantially smaller than the distance between any two adjacent recesses of said plurality of recesses.