Patent ID: 7862781
Filing Date: 2011-01-04
Classification: B01D

Abstract:
1. A honeycomb structure comprising: a ceramic block formed by a plurality of pillar-shaped honeycomb fired bodies each having a large number of cells longitudinally disposed in parallel with one another with a cell wall between the cells, the plurality of pillar-shaped honeycomb fired bodies being combined with one another by interposing an adhesive layer, with a sealing material layer formed directly on a peripheral face of said ceramic block, wherein said ceramic block includes a plurality of different shapes of said honeycomb fired bodies; out of outer walls of said honeycomb fired bodies, a thickness of a peripheral wall forming the peripheral face of said ceramic block is virtually even; a shape of a cell located at an outermost periphery of said ceramic block is virtually identical with a shape of a cell located at a place other than said outermost periphery of said ceramic block; on said peripheral wall of said honeycomb fired body, a step is provided: a surface of said sealing material layer is smooth; and said sealing material layer does not have an irregularity formed on an outer peripheral face thereof.