Stopper for slide fastener and method to produce stopper for slide fastener

A method for manufacturing a stopper for a slide fastener;

• comprising steps of:
• A:
• in a metal stopper (10) comprising a head (11) and a pair of legs (12) extending downward from the head (11) in a bifurcated manner, forming a recess (20) in a center on an inner surface (12b) of each of the legs (12);
• and
• B:
• after the step A, putting a number of stoppers (10), each including the stopper, in a container and then coating the stoppers (10) while moving the container,
• wherein a ratio of a depth (D) of the recess (20) to a thickness (E) of said each of the legs (12) of the stopper (10) is 3.8% or more and 18.9% or less,
• wherein said each of the legs (12) includes a leg main body (13) extending downward and obliquely from the head (11) and a leg end portion (14) extending downward and vertically from a lower end of the leg main body (13), and
• wherein the recess (20) is provided on the inner surface (12b) of said each of the legs (12) so as to include a midpoint in a longitudinal direction of the leg main body (13) and a midpoint in a lateral direction of the leg main body (13).