Heat collapsing foam system

Details Heat collapsing foam system Heat collapsing foam system

B - Operations, Transporting

05

D

154/101, 117/109

B05D 3/00 (2006.01) B05D 3/02 (2006.01) B05D 5/00 (2006.01) D06M 17/00 (2006.01) D06N 3/00 (2006.01)

Patent

CA 1162799

HEAT COLLAPSING FOAM SYSTEM ABSTRACT OF THE DISCLOSURE A process of treating sheet materials with an aqueous treating com- position is disclosed in which surfactants are incorporated in the com- position to permit it to be foamed with gas to provide a foam which is stable in the form of a thin layer long enough to be handled, but which will collapse completely when heated. This is preferably done by em- ploying a mixture of water soluble surfactant to stabilize the foam and water insoluble defoamer to break the foam when heat is applied. This foam is applied to a surface of the sheet material to provide stable foam thereon, and heat is employed to simultaneously cause the foam to collapse and dry the composition.

377946

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