This machine adopts tape puling and withdrawing by stepping motor and uses hooked needle and teeth to double locate for ensuring the bottom stop is fixed between the first and the second teeth.
The machine with 16 heads can produce single centre cord metal zipper and plastic zipper. Conbination of machine with 8 heads and machine of 16 heads can produce doulbe twist centre core of plastic and metal zipper
Summary: The machine with 16 heads can produce single centre cord metal zipper and plastic zipper. Conbination of machine with 8 heads and machine of 16 heads can produce doulbe twist centre core of plastic and metal zipper.
Automatic zipper centre cord making machine with 8 heads can produce the single/double twist center cord of nylon zipper (with the addition double twist frame.) And this machine price has included this twist frame price already.
This machine is used to plate black nickel color(gun color) on metal zipper, and it also can be used to plate antique brass and nickel color for metal zippers.