Method and device for applying washcoat suspensions to a...

B - Operations – Transporting – 05 – D

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Details

B05D 1/18 (2006.01) B01D 53/94 (2006.01) B01J 37/02 (2006.01) B05C 7/04 (2006.01) B05C 9/12 (2006.01) B05C 11/02 (2006.01) B05C 11/105 (2006.01) F01N 3/28 (2006.01)

Patent

CA 2605289

The invention relates to a method for removing an excess of a liquid from a molded article that comprises two opposite planar faces and interior cavities and/or channels to be coated with the liquid. The inventive method is characterized by removing in a first removal step, once the liquid has been introduced into the interior cavities and/or channels, the major portion of the excess liquid under the influence of an external force, and removing in a second removal step the excess liquid remaining in the molded article after the first removal step by contacting the molded article with a porous and/or channel-bearing support on the very face where the excess was removed. The pore and/or channel diameter of the support is smaller or equal the diameter of the interior cavities and/or channels of the molded article.

L'invention concerne un procédé pour éliminer un excédent d'un liquide contenu dans un corps moulé présentant deux faces planes opposées, lequel corps est pourvu de canaux et/ou cavités internes à enduire du liquide. Selon ledit procédé, après l'introduction du liquide dans les canaux et/ou cavités internes, la majeure partie du liquide excédentaire est éliminée, dans une première étape de purge, sous l'action d'une force extérieure puis, dans une seconde étape de purge, le liquide excédentaire résiduel, restant dans le corps moulé après la première étape de purge, est éliminé par mise en contact du corps moulé avec un revêtement poreux et/ou présentant des canaux au niveau de la face où l'excédent a été purgé, le diamètre des pores et/ou des canaux de ce revêtement étant inférieur ou égal au diamètre des canaux et/ou cavités internes du corps moulé.

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