Method of fabricating honeycomb body

Details Method of fabricating honeycomb body Method of fabricating honeycomb body

2005-08-23

2005-08-23

Vincent, Sean (Department: 1731)

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Producing or treating porous product

C264S432000

Reexamination Certificate

active

06932932

ABSTRACT:
Method of fabricating at least a honeycomb body include drying a plurality of honeycomb bodies, each having a multiplicity of cells arranged in the shape of a honeycomb and having a wall thickness of 0.125 mm or less, without cracking or wrinkling in the outer peripheral skin portion of the mold. Extrusion-molded argillaceous honeycomb bodies may be dried by placement on porous ceramics trays, having a dielectric loss of 0.1 or less, a porosity of 10% or more and a sectional open area ratio of 50% or more, exposure to at least 70% humidity and simultaneous irradiation with microwaves of 1,000 to 10,000 MHz. Alternatively, extrusion-molded argillaceous honeycomb bodies may be dried by exposure to at least 70% humidity and simultaneous irradiation with microwaves of 1,000 to 10,000 MHz, after which hot air is passed through the cells of the honeycomb bodies.

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patent: 5306675 (1994-04-01), Wu et al.
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patent: B-2591843 (1996-12-01), None
patent: B-2637651 (1997-04-01), None

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