Exhaust gas filter and method of making the same

Abstract From the Canadian patent

1-, Abstract:, The invention provides an exhaust gas filter of honeycomb structure which is formed by alternate layered stacking and bonding of heat-resistive and porous ceramic fiber composite sheets having a plane shape and a corrugated shape, wherein end parts of the corrugated sheets are pressed down or up to make blocade walls. The resulting parallel channels, which are formed by the alternate layered stackings of the corrugated sheet and the plane sheet, are closed at alternate ends to form gas-inflow channels and gas-withdraw channels. The resulting filter element has good resistance against mechanical and heat shocks and has a small pressure drop and good particulates collection …