A foil-like functional material (1) providing a predefined function and may be used for targeted physical, chemical, physicochemical, biological, technical and technological purposes, and in which is arranged a support medium (2), which comprises a total support volume, has a cross-sectional extent (7) of ≤100 μm, like a matrix, and is formed from linear support elements (3a) and node-like support elements (3b), which form the substance components of the support medium (2) and pass through the total support volume to form a strip-like extent with interconnected partial volumes (5), situated therein and spanned by support elements (3) close by. The support elements (3) are sheathed with a first functional substance (4) which provides a first function. The remaining volume of the total support volume is filled with one second functional substance (6) which differs from the first function.