Which is Better, Plastic Zipper or Nylon Zipper?

Zippers can be divided into several types according to materials, such as metal, plastic, and nylon. They are used in many clothes, pants, and other products. Which is better to compare plastic zippers with nylon zippers?

Performance requirements for plastic zippers

(1) Good abrasion resistance to ensure the service life of the zipper;

(2) Low friction coefficient and excellent self-lubricating performance to ensure smooth sliding;

(3) High creep resistance and fatigue resistance to ensure firm fit;

(4) High dimensional accuracy to ensure accurate fit;

(5) Good heat resistance to ensure hot water and steam washing;

(6) Good corrosion resistance to adapt to the washing environment of various detergents;

Material selection of zipper

• Nylon 66

Nylon 66 is the earliest plastic zipper, which still occupies the small zipper market. PA66 is often formed by extrusion and stretching. First, PA66 is stretched into silk, and then it is wound into zipper products. PA66 has high forming efficiency, excellent creep resistance, fatigue resistance, wear resistance, and low friction coefficient, and its self-lubricating performance is superior to that of POM.

• POM

The molding method of POM is mainly injection molding, which has the advantage of high matching dimension accuracy and can form large zippers, which is the main mainstream in the large zipper market. The friction coefficient and wear amount of POM are small. The friction coefficient is 1/3 of PA66. It is suitable for long-term sliding parts. The fatigue resistance is the best among plastics, and the wear resistance is 3 times as much as PA66.

• Glass fiber reinforced PET

GFPET can be made into zippers by injection molding and extrusion molding. The creep resistance, wear resistance, and friction resistance of GFPET are better than those of PA66 and POM. The fatigue resistance is equivalent to that of POM, and the low-temperature resistance is good. It is suitable for use in cold regions. Its price is 50% lower than that of POM, and 160% lower than that of PA66. The disadvantage is that the self-lubricating property is lower than PA66 and POM.

Difference between the plastic zipper and nylon zipper

1. The difference between raw materials: nylon zippers are made of polyester fiber raw materials, regardless of cloth strips or rice teeth, and the suture is made of polyester fiber. The plastic zipper, according to technical expertise, is an epoxy zipper. After plastic granulation, the injection molding process is carried out.

2. Difference in the production process: nylon zipper is made of polyester thick silk spirally formed, and rice tooth and cloth strip are sewn together by suture. The plastic zipper is made of polyester raw material particles that are melted at high temperatures and then molded into cloth strips by a plastic machine.

3. Difference between application fields and physical standards: nylon zipper with rice teeth closely occluded, soft and high compressive strength, can withstand bending above 90 degrees without affecting the compressive strength, and is generally used for luggage, leather goods, outdoor tents, gliders, etc. to withstand strong tensile resistance In places where bending is often used, the pulling frequency is high, the wear resistance is high, and the application is common. Plastic zippers are silky and smooth and are generally used in places where the compressive strength and bending requirements are not too high.