| 摘要 |
A pillar-shaped honeycomb structural body includes a first end face and a second end face substantially parallel to each other; and a peripheral surface connecting the first end face and the second end face. The first end face and the second end face have similar peripheral shapes. A taper rate P satisfies 0<P‰ 4%, the taper rate P being expressed by the following formula (1) taper rate P % = D �¢ 1 - D �¢ 2 / 2 �¢ L × 100 where the maximum width of the first end face is D1, the maximum width of the second end face is D2, and the distance between the first end face and the second end face is L. |
