| 摘要 |
PURPOSE:To rationalize the flow of exhaust gas by a method wherein a corrugated foil prepared so as to change the height of the corrugations of the corrugated foil corresponding to the specific layer of a honeycomb body and a flat foil are alternately superposed one upon another and wound in a vortex shape to prepare a honeycomb body wherein the cell density of a specific range of a layer is different from that of other layer. CONSTITUTION:A flat foil 2 and a corrugated foil 1 are alternately superposed one upon another and wound in a vortex shape to prepare a metal carrier having a honeycomb body 2. At this time, the corrugated foil 1 prepared so as to change the height of the corrugations of the corrugated foil 1 corresponding to a specific range of the layer of the honeycomb body 8 and the flat foil 2 are alternately superposed one upon another to be wound in a vortex shape. By this method, the honeycomb body wherein the cell density of the specific range of the layer C is different from that of other layer is formed. As a result, the flow of the exhaust gas passing through the honeycomb body becomes rational and the catalyst supported on the honeycomb body acts uniformly and efficiently. |
