Patent ID: 11883768
Assignee: CORNING INCORPORATED
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 7:
8. A method for plugging a subset of cells of a honeycomb structure, 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 with a piston to push a plugging material through the plurality of openings of the mask and into the plurality of cells of the honeycomb structure; and
measuring a plurality of pressures within the plurality of cells of the honeycomb structure during the applying step,
wherein the step of applying a force to the film material further comprises adjusting the force applied to the film material to develop a target pressure within the plurality of cells of the honeycomb structure, the target pressure based at least in part on the plurality of pressures within the plurality of cells of the honeycomb structure.