| 摘要 |
PROBLEM TO BE SOLVED: To provide a plugged honeycomb structure that can be fully satisfactorily compatible with a high level as a filter for collecting PM, concerning a temperature rising property, a heat retaining property and strength.SOLUTION: A plugged honeycomb structure is configured such that a shape of a cell 13 in a cross section perpendicular to an extending direction of the cell 13 is an enneagon. The enneagon is shaped to have three vertices existing in every other one in a circumferential direction of a regular hexagon among six vertices of the regular hexagon, and six new vertices formed by cutting corners including three remaining vertices with a line segment presenting on the side in parallel to each diagonal for connecting three vertices and forming three remaining vertices by both ends, respectively. Multiple cells 13 are disposed such that the sides for connecting the new vertices and the vertex other than the new vertices with each other are opposed in a parallel state between adjacent cells 13, 13. |
