There are 3 types of teeth in metal zippers. The specific types of teeth are as follows:

    1. P teeth, also known as round teeth, are characterized by the teeth of the zipper being round. This kind of zipper is common in life, also known as ordinary zipper;

    2. Y teeth (like ykk type), also known as square teeth (y tooth zipper), which is characterized by the zipper teeth are square;

    3. The fine tooth zipper is characterized by double-point double-pull, which is the double-point tooth you mentioned. At present, the technology is not very mature and the output is relatively low.

Introduction of metal zipper production process:

    1. The previous process: warping-webbing-dyeing-ironing tape-row microphone-plating-color

    2. The next process of opening the zipper: fixed size-glue hole punching-wear the left and right bolts-wear the zipper head-hit the stop-cut-finished product inspection and packaging.

    3. The previous process of closing the zipper: the right size row of microphones-you can jump the belt to arrange the required size-hit the work code-wear the zipper head-hit the stop-cut off-finished product inspection and packaging.

Recommended reading:

◆How to distinguish the working principle of zipper?

◆Metal zipper means the teeth of the zipper

◆How to distinguish Y tooth zipper from ordinary tooth zipper

◆Precautions when using metal zippers for different clothing