| 摘要 |
The invention relates to a filter material, in particular for an air filter, wherein the filter material (1) has a diminishing pore size in the flow direction (5), and wherein the filter material (1) has a substrate layer (2) on the inflow side and a fine-fiber layer (4), in particular a melt-blown layer, on the outflow side. It is essential to the invention that a connection region (3) is arranged between the substrate layer (2) and the fine-fiber layer (4), that the filter material (1) has a thickness (d) of d > 0.35 mm, and that an impregnation (6) is applied at least to the inflow side of the substrate layer (2). Thus, an especially high-performance filter material (1) that combines the advantages of the individual layers (2, 4) can be created. |
