1. What is a zipper?
A: A connection piece composed of two flexible tooth chain belts that can mesh with each other and a pull head that can be repeatedly pulled apart and pulled together. A zipper is a repeatable pull-open connection consisting of two flexible, meshing single-sided tooth chains.
2. What is the type of zipper?
A: Closed zipper, single open tail, double open tail zipper.
3. What is a dental chain?
Answer: The two matching one-sided teeth are continuously meshed with each other, then the two sides of the teeth will synthesize a tooth chain.
4, the width of the teeth: the width between the two teeth engaged, or the width of the feet pulled by the zipper pull head on it.
5, what is the pull smoothness?
Answer: Under the specified conditions, the maximum force of the zipper closing process
6. What is the binding force of pulling head and pulling piece?
A: The ultimate force of pulling the pull piece from the pull head body vertically to the back direction of the damage.
7, what is the load pull?
Answer: The number of times the zipper can withstand the reciprocating pull of the pull head under the specified transverse anti-longitudinal tension.
8, what is open zipper?
A: When the zipper is pulled open, the two sides of the tooth chain can be completely separated.
9, what is the flat pull strength?
A: Under specified conditions, the lateral limiting force applied to the chain teeth and cloth tape.
10, what is open tail flat draw strength?
A: Apply transverse to the open end of the tooth chain belt to pull out the limiting force that destroys the open end.
11, what is the socket shift strength?
Next: What are the types of pull heads on zippers?

12. What does BS 3084 mean?
A: British zipper standard.
13. What does ASTM 2061 mean?
A: The zipper standard of the American Society for Testing Materials.
14. What does DIN 3419 mean?
A: German zipper standard.
15. What is the main material of metal zipper chain teeth?
A: Aluminum alloy, brass, white copper, zinc alloy, etc.
16, What are the main surface treatment of metal zipper chain teeth?
A: Aluminum zipper yellow plating, brass zipper white plating, black nickel plating, bronze, red bronze, silver white plating, gold plating, etc.
17. What are the main materials used for injection molding zipper chain teeth?
A: Polyformaldehyde.
18, What is the main raw material of nylon zipper?
A: Polyester monofilament, core thread, polyester processing wire, sewing thread, zinc alloy and engineering plastic of drawing head.
19, What is the main dye for nylon zipper dyeing?
A: Disperse dyes.
20, why dyes containing banned azo is not in line with environmental protection requirements?
A: Some colors of disperse dyes contain azo components, dyeing zipper contact with the human body will induce some diseases, so it is not safe.
21, why is nylon zipper easy to produce color difference?
A: Because the main raw materials used in nylon zipper are polyester monofilament, core thread, polyester processing wire, suture and other components are different, the professional coloring of the zipper is different, and it is easy to produce color difference on the same zipper.
22, what is the basis of color difference?
A: National standard, GB/T 250, GB/T 251.
23, Under what environmental conditions to identify color difference grades?
A: Identify the color difference grade in the color matching box of the standard light source.
24, What kinds of light sources are commonly used in the world?
A: D65, CWF, TL84, etc.
More Expertise on Zippers
25. What is the binding force of pulling head and pulling piece?
A: The ultimate force of pulling the pull piece from the pull head body vertically to the back direction of the damage.
26, what is the load pull?
Answer: The number of times the zipper can withstand the reciprocating pull of the pull head under the specified transverse anti-longitudinal tension.
27, China's current implementation of zipper industry standard code is what?
A: Metal zipper :QB/T 2171-2001\ Injection zipper :QB/T 2172-2001\ nylon zipper :QB/T 2173-2001.
Zipper type description:
When the zipper is pulled apart, the two sides of the tooth chain can not be completely separated.
one way close - end zipper refers to a zipper with a zipper through the end.
end zipper refers to a zipper with two pull-ends, which can be opened and closed from the back or opposite side.
a. When the two pull heads pull the tooth chain, the zipper is "O" shape;
b. When the two pullers pull apart the metal tooth chain, the zipper is in an "X" shape.