Patent ID: 7435279

Claim:
A honeycomb structure comprising: a plurality of honeycomb segrnents each of which has a plurality of cells surrounded and defined by porous partition walls to form a honeycomb structure as a whole, and each of the cells functions as a passage of a fluid, and is arranged to be parallel to each other in a central axis direction of the honeycomb structure, wherein each segent is bonded integally at least at its two outer partition walls to other adjacent segments by a bonding material in a direction normal to the central axis direction to form the honeycomb structure, the bonding material containing a ceramic as a main component. and a foamed resin having an average particle diameter of 15 to 250 μm and being contained in 25 to 65 volume percents with relation to total volume of the bonding material, the foamed resin promoting coatability and spreadability of the bonding material by virtue of rollability of the foamed resin, whereby the bonding material with the foamed resin has less suppression in shrinkage caused by dehydration, and is substantially free from peeling and cracking.