Patent ID: 8945698
Filing Date: 2015-02-03
Classification: B01D,B28B,B32B,C04B,Y10T

Abstract:
1. A honeycomb structure comprising: porous partition walls via which a plurality of cells constituting through channels for a fluid are partitioned; and an outer peripheral wall positioned in the outermost periphery of the structure, open frontal areas of predetermined cells in an end face of the structure on a fluid inlet side thereof and open frontal areas of remaining cells in an end face of the structure on a fluid outlet side thereof being provided with plugged portions, wherein each of the plugged portions having bubbles formed therein has one or two bubbles formed in the plugged portion, and each of the bubbles is positioned only in a predetermined region in the center region of the plugged portion in a cross-section perpendicular to a direction in which the plurality of cells extend, wherein the predetermined region of the plugged portion along the central axis direction thereof where the bubble is positioned is a region between the position of ⅓ of the depth of the plugged portion from the end of the plugged portion on the end face side thereof and the position of ½ of the depth of the plugged portion from the end of the plugged portion on the end face side thereof, and wherein each of the bubbles formed in the plugged portions has a diameter of 0.3 mm or more.