1. A layered composite material suitable as a dressing for wounds, comprising a layer of foam (10) and a covering layer (20), moreover, this covering layer (20) contains a thermoplastic polymer and is at least partially directly connected to the foam layer (10) ), and moreover, the foam layer (10) contains polyurethane foam, which is obtained by foaming and drying a composition containing an aqueous anionically hydrophilic dispersion of polyurethane (I). ! 2. The layered composite material according to claim 1, wherein the composition from which the polyurethane foam of the foam layer is obtained (10) also contains additives that are selected from the group consisting of fatty acid amides, sulfosuccinamides, hydrocarbon sulfonates, hydrocarbon sulfates, fatty acid salts alkylpolyglycosides and / or block copolymers of ethylene oxide / propylene oxide. ! 3. The layered composite material according to claim 2, wherein the ethylene oxide / propylene oxide block copolymers have a structure corresponding to the general formula (1):! ! moreover, the value of n is in the range from ≥2 to ≤200, and the value of m lies in the range from ≥10 to ≤60. ! 4. The layered composite material according to claim 1, wherein the aqueous anionically hydrophilic suspension of polyurethane (I) can be obtained by the fact that! A) prepare prepolymers with isocyanate functional groups, which are obtained from the reaction mixture, including:! A1) organic polyisocyanates as well! A2) polymer polyols with number average molecular weights from ≥400 g / mol to ≤8000 g / mol and OH-functionalities from ≥1.5 to ≤6! and then! B) the free NCO groups of the prepolymer are fully or partially subjected to mutual1. Слоистый композиционный материал, подходящий в качестве повязки на раны, включающий слой пеноматериала (10), а также покрывающий слой (20), причем этот покрывающий слой (20) содержит термопластичный полимер и по меньшей мере частично непосредственно соединен со слоем пеноматериала (10), и при
