Baffle element and baffle assembly, tank container and container therewith

The baffle element (1) has single-walled panel element having peripheral contour (3) which is formed in a shape corresponding to the shape of a wall contour of the container (10). A free edge (4) implements the inner space of the container and connects the opposite ends of peripheral contour. The curved wall portions (5,6) having different radius of curvature. The radius of curvature of curved wall portion (5) is greater than that of curved wall portion (6) formed between the edge and the curved wall portion (5).