Method for Forming Bar-code on Sewing Bobbin Using Etching and Plating Technologies

摘要

PURPOSE: A bar-code forming method for a sewing bobbin is provided to form bar-code patterns for a plurality of sewing bobbins by continuously implementing a bar-code forming process with respect to a plurality of the sewing bobbins. CONSTITUTION: A bar-code forming method for a sewing bobbin includes the following steps: a metal layer(30) is formed on a sewing bobbin(10); a photo-sensitive film(31) is coated on the metal layer; the photo-sensitive film is selectively exposed through a bar-code patterning mask(32); the exposed photo-sensitive film is developed and selectively removed to obtain a photo-sensitive film pattern; the metal layer is selectively etched through the photo-sensitive film pattern to obtain a bar-code pattern; and the photo-sensitive film pattern is removed from the bar-code pattern.