Zipper is one of the most important accessories for backpacks, which directly affects the lifespan of the backpack. Backpack zippers are divided into different types according to their properties. If classified by material, they can be divided into three types: resin zippers, nylon zippers, and metal zippers.
1. Resin zipper
Features: The resin zipper has a tough texture, abrasion resistance, corrosion resistance, rich colors, and a wide range of applicable temperatures. In addition, due to the large area of the upper and lower surfaces of its chain teeth, it is beneficial to inlay diamonds or gemstones on its surface, making the zipper more beautiful and luxurious, doubling its value, and becoming a practical process decoration.
Disadvantages: Due to the large particle size of the chain teeth, which have a rough and astringent feel, the smoothness of the zipper is slightly worse than other types of zippers of the same type (nylon zipper, metal zipper).
2. Nylon zipper
Features: Soft nylon zipper, smooth surface, bright and colorful color. The most prominent features are lightweight, thin chain teeth, and flexibility. Among them, waterproof zippers are also a branch of nylon zippers, which have undergone some special treatment: pasting PVC film, pasting TPU film, soaking in waterproof agent, coating waterproof zippers, and so on.
Disadvantages: Polyester monofilament is prone to aging and has a narrow application range for high and low temperatures.
3. Metal zipper
Features: Durable, soft, elegant and dignified.
Disadvantages: Chain teeth are easier to fall off and displace than other types of zippers. Due to the high cost of raw materials, they are more expensive than other types of zippers. Compared to copper zippers of the same model, aluminum zippers have a slightly weaker strength performance. However, after surface treatment, it has a decorative effect that imitates copper and has multiple colors. Due to its lower price than copper, its sales price has a certain competitive advantage.
The quality of a backpack's zipper is not only related to the quality of the backpack, but the appropriate combination of zippers and backpack styles has a more finishing touch effect. A small zipper can play a significant role. Therefore, whether it's shopping or customizing a backpack, everyone should be careful not to ignore the zipper option.