METHOD FOR PRODUCING CYLINDRICAL HONEYCOMB STRUCTURE WITH FILM AND METHOD FOR PRODUCING CATALYST

The present invention provides a production method with which it is possible to produce, stably, inexpensively, and in mass quantities, a cylindrical honeycomb structure with a film that can prevent leaching of a catalyst slurry to an outer skin portion during washcoating and can assure breathabilit...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ISHIKAWA SHINGO, SEKIYAMA KAZUHIRO, YAMADA TAKASHI, TAKAHASHI YOSHINORI, OISHI RYOMA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL REFRACTORIES SEPARATION SLAG SPRAYING OR ATOMISING IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	The present invention provides a production method with which it is possible to produce, stably, inexpensively, and in mass quantities, a cylindrical honeycomb structure with a film that can prevent leaching of a catalyst slurry to an outer skin portion during washcoating and can assure breathability of the outer skin portion when used as a GPF. The invention is a method for producing a cylindrical honeycomb structure with a film by forming a film by a coating solution on an outer skin portion of a cylindrical honeycomb structure having partition walls forming a plurality of cells and an outerskin portion serving as a circumferential side surface, the method for producing a cylindrical honeycomb structure with a film characterized in that the cylindrical honeycomb structure is placed between at least two rollers so that the circumferential side surfaces are in contact with each other, coating solution supplied from an application site is applied to the cylindrical honeycomb structurewhile rotating, and a film