The difference in the material of the ribbon, ribbon or ribbon. It is generally easy to use the combustion method to identify fibers, but blended products are not easy to judge. It is necessary to extract a single yarn from each of the warp and weft directions (ie, the direction of the straight and the horizontal). The warp and weft yarns of the two unknown types of webbings were taken out and burned with a lighter, and some physical phenomena were observed during the burning process to determine the raw materials of the warp and weft yarns. When burning, observe the flame, the melting condition, the emitted odor, and the condition of the burnt ash.