The principle of the Circular Locus Pilling Test machine . According to the prescribed method and test parameters, use nylon brush and abrasive or single abrasive to make the fabric rub the ball. Then, under the prescribed lighting conditions, the samples were compared with the standard samples to assess the ball grade. Circular Locus Pilling tester test procedure. 1. Preparation before trial. 2. Before the test, the Circular Locus Pilling Test equipment should be kept horizontal and the nylon brush kept clean. If the equipment is used daily, do at least one cleaning work every week. Clean the brush with a suitable solvent (such as acetone) and brush with hand brush to remove short fleece and clip to highlight nylon wire. 3. Put the foam plastic gasket, the sample and the abrasive on the test chuck and the grinding table respectively, and the sample must be facing outwards. 4. According to table 1, adjust the pressure weight and friction rotation number of the sampl...