Method of and apparatus for treating a surface

Details Method of and apparatus for treating a surface Method of and apparatus for treating a surface

B - Operations, Transporting

05

C

117/161, 32/36

B05C 1/04 (2006.01) B05D 1/26 (2006.01)

Patent

CA 1110123

A B S T R A C T In a method of treating a surface such as a paper web with a treating agent, the treating agent is foamed under pressure and delivered via a passageway to an application zone so as to come into close proximity with the surface to be treated which may be moved continuously past the application zone. A constriction, upstream in the direction of foam flow, of the passageway causes a pressure drop in the body of the foam causing bubbles of the foam to burst adjacent the surface whereby the treating agent is applied to the surface.

294315

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