Foam coating

Details Foam coating Foam coating

B - Operations, Transporting

05

D

117/57, 32/60

B05D 1/02 (2006.01) B05B 17/04 (2006.01) B05D 7/24 (2006.01)

Patent

CA 1120340

ABSTRACT OF THE DISCLOSURE Surface coating methods and apparatus are disclosed which eliminate many of the disadvantages associated with known coating processes from pollution, equipment, materials, energy, labor and cost standpoints. According to techniques described, liquid compositions containing film-forming solids are formulated, then conveyed in the foam state towards a surface, and upon foam disintegration, form a film of solids on the surface. The tech- niques disclosed eliminate the need for solvents in paints or reduce volatile content to very minimal amounts. This method also enables polymeric compositions having high molecular weight to be employed as coating materials. Furthermore, the method has utility in nearly all coating processes where the film-forming solids are conveyed from a bulk state to a surface for coating.

313320

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