ATI Corporation COF-S1 Mop Cloth Coefficient of Friction Tester

COF-S1 is a specialized Mop Cloth Coefficient of Friction Tester for mop and cleaning materials like microfiber mop pads and sponge mops with foam blocks (cellulosic, rubber, or plastic). Friction varies based on usage for liquids, dust, and dry surfaces. The mop’s friction coefficient affects its cleaning efficiency and usability. Excessive friction raises labor intensity, while too little hampers cleaning, thus requiring a balanced coefficient for optimal performance.

Formula

The Mop Cloth Coefficient of Friction (COF) is determined by dividing the force needed to move one surface across another by the force perpendicular to the surfaces. It has two kinds: Static and Kinetic. Static COF (µs) is a measure of force required to begin movement, while Kinetic COF (µd) is a measure of force required to maintain movement.

Test Method

To test the Mop Cloth Coefficient of Friction, fix the sample cloth to its aluminum or plastic frame, then place the total assembled part under a certain weight. The block, together with the sample and its frame, is pulled at a speed of 500mm/min, over a 500mm distance. The static and kinetic coefficient of friction are recorded.