What was the earliest invention of zipper for?

At that time, in some places in Central Europe, people tried to replace buttons and bows with belts, hooks and rings, so they began to experiment with zippers. Zippers were first used in military uniforms. During World War I, the US Army first ordered a large number of zippers to make clothes for soldiers. However, the promotion of zipper in the folk was relatively late, and it was not until 1930 that it was accepted by women to replace the buttons of clothing.

With the development of human society, economy and science and technology, the zipper has developed from the initial metal material to non-metal material, from single variety and single function to multi-variety and multi-specification comprehensive function, and from simple structure to exquisite and colorful today, which has gone through a long evolution process.

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Maintenance method of zipper:

1. When using the zipper at ordinary times, pay attention to whether there are problems such as "broken belly", "missing teeth" and skew on the zipper. If there are these problems, fix them in time and don't pull them.

2. The zipper of aluminum alloy is easy to be corroded, so it should be kept dry and moisture-proof to prevent the aluminum teeth from producing white oxide, which will lead to the zipper rusting over time and affect the use. At the same time, attention should also be paid not to contact alkaline and acidic substances.

3. When pulling the zipper, you should first align the teeth on both sides, hold the zipper head and gently pull forward along the track. Don't pull hard to avoid "tooth skew", "broken belly" and "tooth loss".

4. Don't put zippers in all kinds of bags, pockets or wallets, otherwise the zippers will easily cause "broken belly", "lost teeth", skew and soft cloth.

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