| abstract |
The honeycomb filter 20 includes a plurality of porous partition walls 22 having one end opened and the other end plugged to form a plurality of cells 23 serving as exhaust gas flow paths, and on the partition 22 And a collection layer 24 that is a layer that collects and removes the solid components that are formed and contained in the exhaust gas. In the honeycomb segment 21, when the thickness of the collection layer 24 on the outermost peripheral partition wall portion 22a is A (μm) and the thickness of the collection layer 24 on the inner peripheral region partition wall portion 22b is B (μm), A / The collection layer 24 is formed so that B is 60% or less. |