Introduction to Zipper Sliders

A zipper slider is the complete moving component that opens and closes a zipper. As it travels along the chain, its body guides the two rows of elements into engagement or separates them in the opposite direction. The pull tab is the part held to move the slider; it is not the complete slider.

A typical slider has a body, a pull tab and a crown that holds the pull tab. Top and bottom stops are separate zipper parts at the ends of the chain that limit slider travel. On an open-end zipper, the separable pin and retainer box are also separate components. They are not parts of the slider body.

Slider designs include locking and non-locking types. Selection should match the zipper chain type, such as metal, coil or molded resin, as well as chain size and the intended open-end or closed-end configuration. A size number alone does not establish compatibility. Confirm the actual chain and slider specifications before assembly.

In zipper finishing, slider mounting means installing a complete slider onto the zipper chain. This is different from manufacturing a slider body or assembling its parts. Primo PM-321 and PM-322 are slider mounting machines; they do not die-cast slider bodies. For equipment selection, confirm the chain material and size, slider design, lock type and end configuration against the required process.