Patent ID: 8343252
Filing Date: 2013-01-01
Classification: B01D,C04B

Abstract:
1. A honeycomb filter comprising: a plurality of porous partition portions forming a plurality of cells serving as channels of fluid; and trapping layers that are formed on the partition portions and configured to trap a solid component contained in the fluid, wherein a predetermined trapping region present on the partition portions satisfies that, in an inscribed-circle-diameter distribution obtained by dividing an image of the partition portions captured with an electron microscope into a material region and a plurality of pore regions and by drawing maximum inscribed circles individually inscribed in the pore regions, a median pore diameter D50 is 1 μm or more and 6 μm or less and a median pore diameter D80 is 1 μm or more and 7 μm or less, and an inscribed-circle porosity determined from the inscribed-circle-diameter distribution is 35% or more and 60% or less.