This application discloses a method for assembling a scrub brush having a plurality of bristles integrally on one side of a thermoplastic backing and an open-cell organic sponge bonded to the other side of the backing by carrying out successively the following steps: a) forming the thermoplastic brush and bristles; b) melting a plurality of protrusions on the side of the backing away from the bristles with applied heat; c) placing the sponge on the molten protrusions; and d) maintaining contact between the molten protrusions and the sponge; whereby the molten protrusions are drawn by capillarity into the stroma network of the sponge.
