| 摘要 |
There is disclosed a plugged honeycomb structure capable of enhancing an isostatic strength and suppressing an increase in pressure loss and a decrease in capacity of deposited ash. The plugged honeycomb structure includes a honeycomb structure body 4, outflow side plugged portions, and inflow side plugged portions 5a. A shape of cells 2 in a cross section perpendicular to an extending direction of the cells 2 is a hexagonal shape. Among six corner portions 15 of each of the hexagonal cells 2, the corner portion 15 between two partition walls 1 which constitute the corner portion 15 and at least one of which is the partition wall 1 separating inflow cells 2a or outflow cells 2b from each other is a specific corner portion 15a, and the corner portion 15 between the two partition walls 1 which constitute the corner portion 15 and each of which is the partition wall 1 separating the inflow cell 2a and the outflow cell 2b is an unspecific corner portion 15b. In this case, at least one of the specific corner portions 15a is provided with a reinforcing portion 6 so that a shape of the specific corner portion 15a is rounded, and the unspecific corner portions 15b are not provided with the reinforcing portions 6. |
