| 摘要 |
PURPOSE: A coil fastener sewing structure of a polyester zipper is provided to maximally prevent the opening of a fastener by enabling the stable engagement of the fastener. CONSTITUTION: A coil fastener sewing structure of a polyester zipper inputs a core(3) into a coil fastener(2) and fixes the coil fastener to a zipper tape(1). A sewing unit comprises a body fixing sewing unit(41) and an engagement fixing sewing unit(40). The engagement fixing sewing unit arranged in an engagement unit of the coil fastener includes two upper threads(40a,40b) and one lower thread(40c).
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