Method of manufacturing a catalytic converter for the purification of exhaust gas

摘要

A catalytic converter for the purification of exhaust gas including a catalyst carrier, a heat-insulating seal layer and a cylindrical metal shell is manufactured by providing an assembly including the catalyst carrier, a crystalline alumina fiber mat as the heat-insulating seal layer and a sheet-shaped article and pressing the assembly into the metal shell through a funnel-shaped fixture to render a bulk density of the crystalline alumina fiber mat in use into 0.25-0.60 g/cm3.