HONEYCOMB FILTER AND MANUFACTURING METHOD OF THE SAME

摘要

There is provided a honeycomb filter including: a honeycomb base material; plugged portions; and a porous collecting layer disposed on the surface of the partition wall parent material in at least the remaining cells. The collecting layer has a constitution in which a plurality of particles combine or intertwine with one another, and the collecting layer includes fibrous fiber particles as the plurality of particles, and includes the particles having an average fiber diameter of 0.1 to 15μm and an average aspect ratio of 3 or larger. An open area ratio of the surface of the collecting layer is 20% or larger.