US Patent 7749458 Honeycomb structure

This is directed to a honeycomb structure (10) including two or more honeycomb segments (11) having numerous through channels having been partitioned by walls and penetrating in axial direction thereof, the walls for through channels having a filtering function, and one end being clogged at predetermined through channels, and the other end at the remaining ones, and joint layers (12) for joining two or more honeycomb segments (11) each other. It may satisfy at least either that the Young's modulus of material of the joint layer (12) is 20% or less of that of the honeycomb segment (11), or that the material strength of joint layer (12) is lower than that of the honeycomb segment (11). This honeycomb structure shows a less thermal stress during use, has such a durability that no crack is formed, hardly shows a difference in temperature between the central portion and outer peripheral portion, and shows a lower pressure loss of fluid.