Patent ID: 8277921

Claim:
A honeycomb structure comprising: a ceramic block having a longitudinal direction and comprising: a plurality of honeycomb fired bodies each having a plurality of cell walls extending along the longitudinal direction to define a plurality of cells, the plurality of honeycomb fired bodies including center-portion honeycomb fired bodies located at a center portion in a cross-section perpendicular to the longitudinal direction and peripheral honeycomb fired bodies surrounding the center-portion honeycomb fired bodies; a first adhesive layer interposed between the center-portion honeycomb fired bodies to connect the center-portion honeycomb fired bodies; and a second adhesive layer interposed between each of the center-portion honeycomb fired bodies and each of the peripheral honeycomb fired bodies and between the peripheral honeycomb fired bodies, an adhesive strength α between said center-portion honeycomb fired bodies bonded via the first adhesive layer being higher than an adhesive strength β between honeycomb fired bodies bonded via the second adhesive layer.