Abstract: The present invention relates to an improved structure of a spiral draining roller, characterized in that a plurality of interlaced diagonal partition blocks, and having a design of spiral stairway draining grooves. By the simultaneous rolling of both the front and rear rollers while squeezing the water absorbing foam, drainage is provided for the dirty water to flow outwards towards either side of the grooves. In doing so, it further increases the effect of draining the dirty water by the left and right wings simultaneously and completely.

Abstract: A scouring pad fabrication method, which includes the step of coating a hydrophilic material on the top side wall of a first scouring pad been put in a mold, the step of pouring a sponge dope in the mold over the hydrophilic material and then placing a second scouring pad on the sponge dope, the step of heating the mold to let the hydrophilic material be dissolved in the sponge dope and foamed with the sponge dope into a sponge, the step of taking the foamed material thus obtained out of the mold and then splitting the foamed material into two equal halves each having a sponge layer and a scouring pad at one side of the sponge layer.

Abstract: A mophead for a sponge mop, which includes a sponge body, and two protective cover layers covered on two opposite side walls of the sponge body, wherein the protective cover layers, which can be made of foamed skin, scouring pad, or woven fabrics, each have open spaces of size smaller than open spaces in the sponge body, a density greater than the sponge body, and a bottom scraper portion, which scrapes dirt from the floor when the mophead is moved over the floor.