Patent ID: 7504057
Filing Date: 2009-03-17
Classification: B28B,F01N,Y02T

Abstract:
1. A method of manufacturing an exhaust gas purifying filter, comprising steps of: performing an extrusion molding with ceramic raw materials including organic binder in order to form a honeycomb structure body of a desired length having a plurality of partition walls forming a plurality of cells in a honeycomb structure, and both ends of each cell having openings; inserting a multi-taper jig having a plurality of tapered front parts into the corresponding openings of a cell arrangement on one end surface of the honeycomb mold body; oscillatory moving the multi-taper jig in a direction perpendicular to an axis of the honeycomb mold body so as to enlarge the opening of one cell and to seal the opening of the adjacent cell arranged on the end surface of the honeycomb mold body while heating the partition walls; and burning the honeycomb mold body.