Importance

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Abstract

A method for plugging selected cell channels in a honeycomb structure for the fabrication of a solid particulate filter. The method includes covering a first end face of the honeycomb structure with a mask having openings corresponding to open ends of a first plurality of cell channels; loading powdered plugging material from through the mask openings into the first plurality of cell channels; forming plugs in the first plurality of cell channels at ends opposite the first end face of the honeycomb structure; loading powdered plugging material into the open ends of a second plurality of cell channels open at the second end face of the honeycomb structure; and forming plugs in the second plurality of cell channels at the ends adjacent the first end face of the honeycomb structure.

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First Claim