Patent ID: 8580009
Filing Date: 2013-11-12
Classification: B01D,F01N,Y02T

Abstract:
1. A honeycomb filter comprising: a honeycomb basal body including porous partition walls arranged to form a plurality of cells disposed in parallel with one another and including inflow cells into which a fluid flows and outflow cells which are formed adjacent to the inflow cells and out of which the fluid flows; first plugged portions with which one end of each of the inflow cells is plugged; second plugged portions with which another end of each of the outflow cells is plugged; porous collecting layers formed on the surfaces of the partition walls on the side of the inflow cells; and end aggregate layers made of a particulate aggregate material and formed on the surfaces of the first plugged portions on the side of the inflow cells, wherein a thickness of the end aggregate layers is from 0.5 to 5 ram, wherein the honeycomb basal body, first plugged portions and second plugged portions are sintered together at a sintering temperature, and the collecting layers and end aggregate layers are formed thereon and heat treated at a temperature lower than the sintering temperature.