| abstract |
Provided is a sealed honeycomb structure that can suppress an increase in pressure loss and can improve the durability well. The honeycomb structure 4 which has the porous partition 1 which partitions the inflow cell 2a and the outflow cell 2b, the outflow side sealing part 5b, and the inflow side sealing part is provided, and it consists of several cells ( 2) is configured such that the opening area of the inlet cell 2a becomes larger in the cross section of the honeycomb structure 4 than the opening area of the outlet cell 2b, and at least one outlet cell 2b extends from the cell 2. It is a reinforcement cell 22 in which the reinforcement part 6 which reinforces the outflow cell 2b is formed in the at least one corner part 21a which the partition wall 1 of the cross section perpendicular | vertical to the direction which crosses becomes the inflow cell 2a, The sealed honeycomb structure 100 is an unreinforced cell in which no reinforcement 6 is formed at all corner portions 21 at which the partition walls 1 of the cross section perpendicular to the direction in which the cells 2 extend are crossed. |