Nanofibre nonwoven comprising a network of nanofibres composed of at least one nanofibre material and enclosing pores , produced by a method comprising the method steps: a) providing at least one nanofibre material and at least one porogen material suitable for formation of at least one porogen,, b) electrospinning the at least one nanofibre material while introducing at least one porogen formed from the at least one porogen material, characterised in that the porogen has a diameter of 30 to 1000 μm, so that the volume ratio of porogen material to nanofibre material in the electrospun nanofibre nonwoven obtained after completion of this method step is 40 to 99 to 60 to 1 (in each case volume based on the total volume, i.e. fibres and porogens, of the nanofibre nonwoven) and c) obtaining a nanofibre nonwoven comprising at least one porogen , wherein the nanofibres are present in the form of nanofibre layers, wherein a pore is a space enclosed by nanofibre layers, which can be filled by porogens, cells or fluids, wherein the pores spatially separate the individual nanofibre layers from each other, wherein a nanofibre layer is a layer of nanofibres arranged above and/or next to one another, and wherein, insofar as the porogen is provided in method step a) as a ready-formed porogen, in method step b) an introducing of the porogen and the electrospinning of the nanofibre material is carried out alternately, or insofar as the porogen material is provided in method step a) as a material suitable for forming at least one fibrous porogen, in method step b) at least one fibrous porogen is formed from the porogen material before or during its introduction into the electrospun nanofibre material. a) providing at least one nanofibre material and at least one porogen material suitable for formation of at least one porogen,, b) electrospinning the at least one nanofibre material while introducing at least one porogen formed from the at least one porogen material, characterised in that the porogen has a diameter of 30 to 1000 μm, so that the volume ratio of porogen material to nanofibre material in the electrospun nanofibre nonwoven obtained after completion of this method step is 40 to 99 to 60 to 1 (in each case volume based on the total volume, i.e. fibres and porogens, of the nanofibre nonwoven) and c) obtaining a nanofibre nonwoven comprising at least one porogen , wherein the nanofibres are present in the form of nanofibre layers, wherein a pore is a space enclosed by nanofibre layers, which can be filled by porogens, cells or fluids, wherein the pores spatially separate the individual nanofibre layers from each other, wherein a nanofibre layer is a layer of nanofibres arranged above and/or next to one another, and wherein, insofar as the porogen is provided in method step a) as a ready-formed porogen, in method step b) an introducing of the porogen and the electrospinning of the nanofibre material is carried out alternately, or insofar as the porogen material is provided in method step a) as a material suitable for forming at least one fibrous porogen, in method step b) at least one fibrous porogen is formed from the porogen material before or during its introduction into the electrospun nanofibre material. <EOS>