Drying and gas or vapor contact with solids – Process – With nondrying treating of material
Reexamination Certificate
2006-12-05
2006-12-05
Gravini, S. (Department: 3749)
Drying and gas or vapor contact with solids
Process
With nondrying treating of material
C034S437000, C034S442000, C034S487000
Reexamination Certificate
active
07143526
ABSTRACT:
There is provided a method for drying a ceramic formed body by hot air, the formed body having a peripheral face and end faces constituting a columnar shape, and at least one through-hole extending in an axial direction and open at the end face, the formed body containing ceramics and a heat-gelling binder. The hot air is blown to the formed body in a direction at an angle of 45 to 90 degrees with respect to the axial direction. The method can inhibit deformation such as a bending deformation or a torsional deformation generated in the ceramic formed body in the drying process and crack generation in the firing process after drying.
REFERENCES:
patent: 5513447 (1996-05-01), Yoshida
patent: 5914187 (1999-06-01), Naruse et al.
patent: 6226891 (2001-05-01), Chapman
patent: 2003/0000663 (2003-01-01), Geel
patent: 2005/0279693 (2005-12-01), Katsu et al.
patent: 2001-130970 (2001-05-01), None
Gravini S.
NGK Insulators Ltd.
Steptoe & Johnson LLP
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