| 摘要 |
In a cross section perpendicular to an extending direction of cells (2) of a honeycomb structure body (10), shape of the cells (2) is polygonal, and the honeycomb structure body is constituted so that thickness of partition walls (1) in circumferential region (21) is larger than thickness of the partition walls (1) in central region (22) including center of gravity (O) of the cross section. In the cross section, when among the cells (2) arranged on a first line segment (29a) passing the center of gravity (O) of the cross section and extending in a direction perpendicular to the partition walls (1) each constituting one side of each of the cells (2), cell pitch of the respective five or less cells (2) each arranged on the first line segment (29a) has a size of 70% or more and 95% or less to cell pitch in the central region (22) of the honeycomb structure (100). |
