The zipper consists of chain teeth, pull heads, limit codes (front and back codes) or lock fasteners. Among them, the chain tooth is the key part, which directly determines the side pull strength of the zipper. Generally, the zipper has two chain bands, each of which has one row of chain teeth, and the two rows of chain teeth are interlaced. Pull a head to hold two side chain tooth, pass pull a loop to glide, can make two side chain tooth each other meshes or take off.
Zippers material can be divided into:
1. Nylon zipper: invisible zipper, double-bone zipper, woven zipper, back zipper, waterproof zipper, etc.
2. Resin zipper: gold (silver) dental zipper, transparent zipper, semi-transparent zipper, livestock luminous zipper, laser zipper and diamond zipper.
3. Metal zipper: iron tooth zipper, aluminum tooth zipper, copper tooth zipper (brass, white copper, antique copper, red copper, etc.), black le zipper.
Zippers variety can be divided into:
1. Closed end zipper
2. Open end zipper (insert left and right)
3. Double closed tail zipper (X or O)
4. Double open end zipper (insert left and right)
5. Single side open tail (insert left and right side, nylon and resin limited, common cap style)
According to the specifications can be divided into: 0#, 2#, 3#, 4#, 5#, 7#, 8#, 9#, 10#, 20# The size of the model is proportional to the size of the zipper teeth.
Zippers structure can be divided into:
Open and close zipper. The back code is fixed and can only be pulled from the front end. When the zipper is fully open, the two chain bands cannot be separated by the back code connection. Suitable for ordinary bag.
String open zipper. There is no back code at the lower end of the chain and a fastener is provided. When the fastener is locked, it is equivalent to a closed zipper. Pull the pull head against the lock fastener and separate the lock fastener. The chain belt can be separated. Suitable for clothing or items that often need to be pulled apart.
Press double zipper. There are two pullers that can be opened or closed from either end. Pull both ends against the lock to separate them, then open them completely. Suitable for large bags, bedding, tents, etc.
Zippers functional can be divided into:
1. Self-locking zipper
2. Unlocked zipper
3. Semi-automatic zipper lock.
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