| 摘要 |
An obj ect of the present invention is to provide a honeycomb filter for purifying exhaust gases having a structure in that, even when comparatively large sealing material layer is included therein, there is hardly any increase in the amount of organic components contained in exhaust gases to be discharged. <??>The present invention provides a honeycomb filter for purifying exhaust gases, having a structure in that a sealing material layer is formed on a circumference of a columnar body made of porous ceramics, which has a number of through holes placed in parallel with one another in the length direction with wall portion interposed therebetween, and the wall portion which separate the through holes from each other functions as a filter for collecting particulates, wherein the rate S alpha of an area occupied by the sealing material layers to the total area of a cross-section including the through holes in the direction perpendicular to the through holes is set to 0.5% or more, and the rate V alpha of organic components to the honeycomb filter for purifying exhaust gases is set to 0.5% by weight or less. <IMAGE>
|
