| 摘要 |
Provided is a honeycomb structure 1 including a honeycomb structure body 6, first plugging portions 8, and second plugging portions 9. The honeycomb structure body 6 has a porous partition wall 4. The first plugging portions 8 are disposed at an outflow side end face 2b of inlet cells 3a and an inflow side end face 2a of outlet cells 3b. The inlet cells 3a are the predetermined cells 3 of the honeycomb structure body 6. The outlet cells 3b are the residual cells 3 of the honeycomb structure body. The second plugging portions 9 are not fired. The first plugging portions 8 form a checkered pattern at the inflow side end face 2a and the outflow side end face 2b. The number of the second plugging portions 9 is within 3% of the number of cell open ends where the first plugging portions 8 are not formed, on both end faces 2a and 2b of the honeycomb structure body 6. |
