teeth made of metallic materials (hereinafter referred to as the metal teeth) are generally engaging head from the proximal end of the head to the rear extension of the engaging body, from the body part of a two extension to the rear fork and a pair of left and right leg. This metal tooth by the following two representative produced.
The first kind of manufacturing method is through extrusion, the metal material in plastic deformation to form a mesh wire head, and use the punch, die and so will the straight wire forming blanking, or cut into the shape of the tooth chain, according to the fragmented state of a manufacturing chain chain like tooth teeth. In roller grinding, grinding and other chemical polishing process, the surface of the tooth chain transparent coating spraying process, using the riveting component, side edge part at intervals to be implanted with a zipper. Accordingly, continuous manufacturing, a plurality of metal teeth arranged on the fastener tape around the side edge is. Made of metal wire arc, then applied to forming extrusion head, engaged by the cutting die, the wire is cut into the shape of the tooth, and the punch will open in the width direction of the leg extension. By using the metal teeth that constitute the zipper, gold The lateral border of the genus is smooth, therefore, the slider is easy to pull the head, in addition, it can reduce the sound generated when the pull head slides.