Basic models
The three basic models of zip fastener

Spiral zip fastener (S-technology)

A plastic spiral is woven into a textile tape, or sewn onto a textile tape.

Spiral zip fastener (concealed)

A plastic spiral is sewn onto a textile tape (woven or knitted) and then the tape is pleated.

Profile zip fasteners

Molten plastic granules are injected onto a woven textile tape.

Metal zip fasteners

Metal members are attached to a woven textile tape.