PURPOSE: To obtain a compact filter having an excellent heat resistance, heat shock resistance and a large filtering area which is used in purifying an exhaust gas of a vehicle and has a structure wherein a predetermined piercing pore formed to an opening end surface of a ceramic structure is sealed by a sealing body.
CONSTITUTION: A main body 1 of a ceramic honeycomb structure is subjected to extrusion molding by a conventional method to obtain a honeycomb molded body. Subsequently, in order to seal a passage supplying a clay mineral and a general piercing pore of the honeycomb molded body in a predetermined pattern, by using a extruding die equipped with a discharge pore continuously molding and discharging the clay mineral or a press metal mold having a predetermined shape, a predetermined piercing pore of the main body 1 of the meramic honeycomb structure is sealed after adhesion and, after drying, said main body is cut into a predetermined dimension and a thickness or finished. Thus fabricated sealing bodies 5, 6 are adhered to both opening end surfaces 4 of the main body 1 by an adhesive or the like and the adhered one is baked at a predetermined temp.
OGAWA YUTAKA
ASAMI SEIICHI
TOTOKI TAKAO
| JPS4938266A | 1974-04-09 |