Patent ID: 8021548

Claim:
A lattice structure comprising: a hydrophilic material for the passage of a liquid through the lattice structure against a gas space situated at an outflow side, wherein the lattice structure has transverse webs and longitudinal webs which together form an angle β between 80° and 100°, lattice openings with a clear width of ≦300 μm being arranged between the transverse webs and the longitudinal webs, wherein on the side of the lattice structure turned toward the gas space, the transverse webs or the longitudinal webs have a rib arrangement of ribs projecting vertically to a lattice plane, and wherein the rib arrangement has at least a first group and a second group of ribs, which differ from one another at least by their rib heights H 1 , H 2 with H 1 >H 2 .