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Title:
DIESEL FILTER PLUGGING PROCESS
Document Type and Number:
WIPO Patent Application WO2005056147
Kind Code:
A3
Abstract:
A method for plugging a subset of cells of a honeycomb structure (10) having a plurality of open-end cells (22) extending therethrough including providing at least one cylindrically-shaped first roller (28) including an engagement surface having a plurality of outwardly-extending teeth (77) spaced along a length and about a circumference of the at least one first roller (28), wherein the teeth (77) are spaced so as to engage a first subset of a total number of cells (22) exposed on a first end (18) of the honeycomb structure. The method also includes rolling the engagement surface of the at least one first roller (28) across the first end (18) of the honeycomb structure (10) with the teeth (77) extending into the first subset of cells, thereby deforming the first end (18) of the honeycomb structure (10) and plugging a second subset of the total number of cells substantially different from the first subset of cells.

Inventors:
DANNOUX THIERRY L (FR)
ROSSIGNOL GREGORY (FR)
Application Number:
PCT/US2004/033358
Publication Date:
January 05, 2006
Filing Date:
October 08, 2004
Export Citation:
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Assignee:
CORNING INC (US)
DANNOUX THIERRY L (FR)
ROSSIGNOL GREGORY (FR)
International Classes:
B01D46/00; B28B11/00; F01N3/022; F01N3/28; B01D; (IPC1-7): B01D46/00; B01D46/24; B28B11/00; F01N3/022
Foreign References:
EP0692995B11997-07-02
US20030041575A12003-03-06
JP2003260316A2003-09-16
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