Patent ID: 8721979
Filing Date: 2014-05-13
Classification: B01D,Y10T

Abstract:
1. A honeycomb structure, comprising: a ceramic block including a plurality of honeycomb fired bodies, each of the plurality of honeycomb fired bodies having a peripheral wall and being combined with one another by interposing an adhesive layer; each of the plurality of honeycomb fired bodies including large volume cells and small volume cells which have cell walls; and each of the large volume cells being larger than each of the small volume cells in a cross section perpendicular to a longitudinal direction of the honeycomb structure, wherein each of the large volume cells and the small volume cells has end portions in the longitudinal direction and either one of the end portions of each of the large volume cells and the small volume cells is plugged, an aperture in the cross section perpendicular to the longitudinal direction in a central part of the honeycomb structure is about 65% or more, the honeycomb structure has a first end face and a second end face in the longitudinal direction and a ratio of an aperture of the first end face of the honeycomb structure to an aperture of the second end face of the honeycomb structure (aperture of the first end face/aperture of the second end face) is about 1.4 or more, each of the cell walls except the peripheral walls of the plurality of honeycomb fired bodies has a thickness of about 0.1 mm or more, and less than about 0.2 mm, the honeycomb structure has a diameter of about 200 mm or more, and a ratio of a length of the honeycomb structure to the diameter of the honeycomb structure (length of the honeycomb structure/diameter of the honeycomb structure) is about 1.0 or less.