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Abstract

A heat-resistant and regeneratable filter body, which can preferably be coated with catalytically active material, for retaining particles from a gas flow flowing through the filter body, has flow paths for the gas flow. The flow paths are separated from each other and at least a first filter stage and a second finer filter stage are disposed in succession in flow direction in the respective flow paths. A process for the production of a heat-resistant and regeneratable filter body for retaining particles, in particular soot particles, from a gas flow flowing through the filter body, preferably from an internal combustion engine, provides predetermined flow paths. In a production procedure for the flow paths in the filter body, at least a first filter stage and a second finer filter stage are disposed simultaneously in a flow path. The first and second filter stages, as viewed in flow direction through the filter body, lie in succession along the flow path.

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First Claim