US 11,891,933 B2
Methods and apparatus for plugging cells of ceramic structures and honeycomb filters
Philip Robert LeBlanc, Corning, NY (US); Robert Arthur Mcintosh, Corning, NY (US); and Richard Henry Weachock, Horseheads, NY (US)
Assigned to Corning Incorporated, Corning, NY (US)
Appl. No. 17/263,196
Filed by CORNING INCORPORATED, Corning, NY (US)
PCT Filed Jul. 15, 2019, PCT No. PCT/US2019/041756
§ 371(c)(1), (2) Date Jan. 26, 2021,
PCT Pub. No. WO2020/028018, PCT Pub. Date Feb. 6, 2020.
Claims priority of provisional application 62/712,387, filed on Jul. 31, 2018.
Prior Publication US 2021/0207509 A1, Jul. 8, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. F01N 3/022 (2006.01); B28B 11/00 (2006.01); B29C 43/18 (2006.01); B01D 46/00 (2022.01); B29C 70/76 (2006.01); B01D 46/24 (2006.01)
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
OG exemplary drawing
 
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.