| 摘要 |
<p>An obj ect of the present invention is to provide a honeycomb filter for purifying exhaust gases which has superior durability and is less likely to generate cracks and the like at a crisscross portion between sealing material layer, even when used together with a catalyst or used in an exhaust gas purifying device repeatedly for a long time. <??>The present invention is directed to a honeycomb filter for purifying exhaust gases which has a structure in which: a plurality of rectangular columnar porous ceramic members are combined with one another through a sealing material layer to constitute a ceramic block, each of the rectangular columnar porous ceramic member including a number of through holes that are placed in parallel with one another in the length direction with partition wall interposed therebetween; a sealing material layer is also formed on a circumference portion of the ceramic block; and said partition wall which separates the through holes functions as a filter for collecting particulates, wherein, on a cross section perpendicular to the length direction of the porous ceramic member of the ceramic block, the maximum width L (mm) of the crisscross portion of said sealing material layer is 1.5 to 3 times greater than the minimum width 1 (mm) of the sealing material layer. <IMAGE></p> |
