HONEYCOMB FILTER

To provide a honeycomb filter capable of effectively restricting an increase in pressure loss accompanying deposition of particulate substances.SOLUTION: A honeycomb filter comprises: a columnar honeycomb structure part 4 having porous partition walls 1 arranged so as to surround a plurality of cells 2 that are flow channels of fluid extending from a first end surface 11 to a second end surface 12; and plugged portions 5 arranged at an opening on a first end surface 11 side or a second end surface 12 side of a respective cell 2. In the partition wall 1, an average branch number of pores existing on an outermost surface of the partition wall 1 exceeds 7.5 but is less than 9.0.SELECTED DRAWING: Figure 1 【課題】粒子状物質の堆積に伴う圧力損失の上昇を有効に抑制することが可能なハニカムフィルタを提供する。【解決手段】第一端面１１から第二端面１２まで延びる流体の流路となる複数のセル２を取り囲むように配置された多孔質の隔壁１を有する柱状のハニカム構造部４と、それぞれのセル２の第一端面１１側又は第二端面１２側の開口部に配設された目封止部５と、を備え、隔壁１は、当該隔壁１の最表面に存在する気孔の平均分岐数が、７．５を超え、９．０未満のものである。【選択図】図１