CPC F01N 3/0222 (2013.01) [B01D 46/0001 (2013.01); B28B 11/006 (2013.01); B28B 11/007 (2013.01); B29C 43/18 (2013.01); B29C 70/766 (2013.01); B01D 46/2418 (2013.01); F01N 2330/06 (2013.01); F01N 2330/30 (2013.01); F01N 2350/02 (2013.01); F01N 2560/08 (2013.01); F01N 2560/14 (2013.01)] | 19 Claims |
1. A method for plugging a subset of cells of a honeycomb structure, the method comprising:
covering a first end face of the honeycomb structure with a mask that comprises a body having an outer edge and a plurality of openings, wherein the outer edge of the body extends outwardly of at least a portion of an outer edge of the first end face and the plurality of openings of the mask is coincident with a plurality of cells of the honeycomb structure;
bringing a film material and the honeycomb structure into contact with each other, the film material having an outer edge that also extends outwardly of at least a portion of the outer edge of the first end face of the honeycomb structure;
applying a force to the film material to push a plugging material through the plurality of openings of the mask and into the plurality of cells of the honeycomb structure; and
adjusting the force applied to the film material based at least in part on a pressure within the plurality of cells to push the plugging material to a predetermined depth within the plurality of cells.
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