Generally speaking, the color fastness reaches Grade 4 for most colors and Grade 3.5 for some special colors, for example, bright red. However, dye transfer would occur as a result of the chemical reaction that will easily take place between the disperse dye molecules in the zipper tapes and the plasticizer, adhesive agent, oiling agent contained in such fabrics as vinyl chloride that contains DOP, synthetic leather or fabrics whose surface is coated with resin. Hence, a piece of lining cloth shall be used for separating the fabric from the zipper when sewing is performed and the products in custody or storage should be separated from each other using the leatheroid.