Title:
METHOD FOR PRODUCING HONEYCOMB CERAMIC STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2001/058827
Kind Code:
A1
Abstract:
A method for producing a honeycomb ceramic structure, characterized in that it comprises providing raw materials for forming a cordierite composition, preparing slurries of respective materials or a slurry of an admixture of the materials through dispersing above materials in water together with a dispersing agent, allowing such a slurry to pass through a sieve having a mesh of 45 µm or less, subjecting the resultant slurry to spray drying to prepare a powdery material, adding a molding aid and water to the powdery material, to provide a molding body, or, subjecting a slurry after sieving to filter pressing to provide a molding body, and then subjecting the molding body to extrusion molding, thereby preparing a very thin honeycomb structure having a wall thickness of 50 µm or less and having no defects. The method, which provides a molding body using a powdery material having passed through a sieve in a wet state, allows the prevention of agglomeration of material particles, leading to efficient removal of coarse particles of materials.
Inventors:
KUMAZAWA KAZUHIKO (JP)
NOGUCHI YASUSHI (JP)
NOGUCHI YASUSHI (JP)
Application Number:
PCT/JP2001/000557
Publication Date:
August 16, 2001
Filing Date:
January 26, 2001
Export Citation:
Assignee:
NGK INSULATORS LTD (JP)
KUMAZAWA KAZUHIKO (JP)
NOGUCHI YASUSHI (JP)
KUMAZAWA KAZUHIKO (JP)
NOGUCHI YASUSHI (JP)
International Classes:
C04B35/195; C04B35/626; C04B38/00; (IPC1-7): C04B35/195; C04B35/626
Foreign References:
| JPH02164765A | 1990-06-25 | |||
| FR2306956A1 | 1976-11-05 | |||
| EP0899248A1 | 1999-03-03 |
Other References:
See also references of EP 1203758A4
Attorney, Agent or Firm:
Sugimura, Kosaku (2-4 Kasumigaseki 3-chome Chiyoda-ku, Tokyo, JP)
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