| 摘要 |
<p>The present invention relates to a honeycomb unit which has a high thermal shock resistance at the plugged portions of the cells and the periphery thereof; is not susceptible to damage such as cracks during a regenerating process; and has a superior durability, and the honeycomb unit of the present invention is a honeycomb unit comprising a plurality of cells which are allowed to penetrate in a longitudinal direction with a wall portion therebetween, each of the cells having either one end portionbeing sealed, wherein supposing that: a ratio of a weight of an unsealed region in the cells to a weight of a sealed region in the cells is Y, and a ratio of a length in the longitudinal direction of the honeycomb unit to an area of a cross-section perpendicular to the longitudinal direction of the honeycomb unit is X, these X and Y are allowed to satisfy the following inequality (1): 100 / 3 ‹ X + 5 ‰ Y ‰ 100 / 3 ‹ X + 40
(wherein 0.1 ‰ X ‰ 0.26).</p> |
