METHOD OF PRODUCING HONEYCOMB STRUCTURES

Title:

METHOD OF PRODUCING HONEYCOMB STRUCTURES

Document Type and Number:

WIPO Patent Application WO/2004/002607

Kind Code:

A1

Abstract:

A method of producing honeycomb structures comprises the steps of putting, for immersion, the end surface of a honeycomb structure (1) in a storage vessel (9) containing slurry (8), pressing it against the inner bottom surface of the storage vessel (9) to thereby force the slurry (8) into at least some of the cells (3) to form pore-sealed portions (2), taking the honeycomb structure (1) having pore-sealed portions (2), out of the storage vessel (9), thereby obtaining the honeycomb structure (1) with at least some of the cells (3) having their pores sealed, the method being characterized in that after an air layer (10) is formed in advance between the pore-sealed portions (2) and the inner bottom surface of the storage vessel (9) to once separate the two from each other, the honeycomb structure (1) formed with pore-sealed portions (2) is taken out of the storage vessel (9).

Inventors:

NATE MASAYUKI (JP)
KANEKO TAKAHISA (JP)
WADA YUKIHISA (JP)

Application Number:

PCT/JP2003/008147

Publication Date:

January 08, 2004

Filing Date:

June 26, 2003

Export Citation:

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Assignee:

NGK INSULATORS LTD (JP)
NATE MASAYUKI (JP)
KANEKO TAKAHISA (JP)
WADA YUKIHISA (JP)

International Classes:

B01D39/00; B01D46/00; B01D39/20; B01D46/24; B01D53/88; B28B11/00; C04B38/00; (IPC1-7): B01D39/20; B01D46/00

Foreign References:

US4818317A	1989-04-04
US20020066982A1	2002-06-06
US4559193A	1985-12-17
JPH0925180A	1997-01-28

Other References: