Honeycomb structure and method of producing the same

Details Honeycomb structure and method of producing the same Honeycomb structure and method of producing the same

1989-07-28

1991-12-17

Epstein, Henry F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

55523, 428188, 502527, B32B 312

Patent

active

050734326

ABSTRACT:
A honeycomb structure as a substrate for a catalyst has at least one partially melted surface on an outer surface of the structure. A roughness of the melted surface is coarser than other surfaces. With the coarse surface, shifting of the honeycomb structure in through-aperture directions and rotation about its axis are prevented, thereby enhancing the reliability of a catalyst converter incorporating the honeycomb structure therein. A method of producing the honeycomb structure includes steps of, after extruding a ceramic batch into a honeycomb structure, drying the extruded honeycomb structure, attaching a chemical compound having a low melting point at a predetermined position onto an outer wall surface of the dried honeycomb structure, and firing the structure to melt at least a part of the outer wall surface, thereby obtaining the honeycomb structure having a melted portion whose roughness is coarser than the other surfaces of the outer wall.

REFERENCES:
patent: 3539387 (1970-11-01), Kelly et al.
patent: 3873350 (1975-03-01), Dwyer et al.
patent: 3905775 (1975-09-01), Sowards et al.
patent: 4200468 (1980-04-01), Hurley, Jr.
patent: 4253992 (1981-03-01), Soejima et al.
patent: 4869944 (1989-09-01), Harada et al.
patent: 4988483 (1991-01-01), Usui et al.

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