| abstract |
The honeycomb filter 20 has a cell 23 having one end opened and the other end plugged to form a fluid flow path, and one end plugged and the other end opened. The cells 23 are alternately arranged. In the honeycomb filter 20, the side collection layer 24 a is formed on the side partition 22 a that forms the side of the polygonal cell 23, and the corner collection is performed on the corner partition 22 b that forms the corner of the polygonal cell. The layer 24b is formed, and the collection layer thickness ratio Y / X, which is the ratio of the thickness Y of the corner collection layer 24b to the thickness X of the side collection layer 24a, is 1.1 or more and 2.4. It is formed as follows. Thus, the corner | angular part collection layer 24b is formed thicker than the side part collection layer 24a, and a solid component is easy to be collected by the side part collection layer 24a side. |