Hollow fibre membrane having three dimensional texturing

Hollow-fibre membrane having at least one first curl in the form of a first wave which is characterized by a first oscillation plane and a first wavelength and at least one second curl in the form of a second wave which is characterized by a second oscillation plane and a second wavelength, wherein the first oscillation plane and the second oscillation plane confine an angle with one another which is from 70° to 110°, said at least one first curl and said at least one second curl comprise periodic waveforms, and said at least one second curl is applied to said at least one first curl.