Introduction of zipper
The zipper is a connecting piece that relies on continuously arranged chain teeth to merge or separate items. It is now widely used in clothing, bags, tents, etc. 1. A fastener made up of two belts with a row of metal teeth or plastic teeth, used to connect the edge of the opening (such as clothes or bag mouth), a sliding piece can pull the two rows of teeth into the interlocking position to close the opening 2. A chain is attached to something (as an object being lifted or dropped) to tighten, stabilize or guide the object.
The structure and function of the zipper
①Closed zipper. The back code is fixed and can only be pulled apart from the front code end. When the zipper is fully opened, the two chain straps cannot be separated by the backyard connection. Suitable for ordinary bags.
②Open zipper. There is no back code at the lower end of the tooth chain and a locking piece is arranged. When the locking member is locked, it is equivalent to a closed zipper. Pull the slider against the locking member to separate the locking member, and the chain belt can be separated. Suitable for clothing or items that often need to be pulled apart. ③Double opening zipper. There are two sliders, which can be opened or closed from either end. Pull the two sliders against the lock to separate them, and then they can be fully opened. Suitable for large bags, bedding, tents, etc.
1. Self-locking zipper
2. No lock zipper
3. Semi-automatic locking zipper