| abstract |
Surface filter material (1), in particular with aerosol and / or particle filter function, preferably with protective function against chemical, biological and / or radioactive pollutants and toxins, wherein the surface filter material (1) comprises: (a) an air and / or water vapor permeable, preferably flat foam-based and / or foam-shaped carrier material (2) with two opposite sides (2a, 2b), in particular flat sides; and (b) an air which is associated with the foam-based and / or foam-like carrier material (2) and / or fixed on a (first) side (2a), in particular flat side, of the foam-based and / or foam-like carrier material (2) - and / or water vapor permeable, preferably planar nanofiber layer (3), in particular aerosol and / or particle filter nanofiber layer, wherein the nanofiber layer (3) comprises or consists of a multiplicity of nanofibers (3 '). |