How Does a Zipper Work and Who Invented It

zipper

A zipper, also known as a zip or a slide fastener, is a common device used for securing the opening of clothing, bags, and other items. It is a mechanical device that is composed of two parallel rows of teeth or coils, which interlock or separate when the zipper is opened or closed. In this article, we will explore in detail how a zipper works.

The Anatomy of a Zipper

Before we dive into how a zipper works, let's take a closer look at its anatomy. A zipper is composed of several parts, including:

  • Tape: The fabric or material on either side of the zipper teeth.
  • Teeth: The interlocking metal or plastic pieces that make up the two rows of the zipper.
  • Slider: The mechanism that moves up and down the teeth to open and close the zipper.
  • Pull tab: The small piece attached to the slider that allows the user to grip and move it.

How a Zipper Works

A zipper works by using the teeth or coils to interlock or separate. When the slider is moved up or down, it pulls the teeth together or pushes them apart. The teeth are designed to mesh together perfectly, creating a strong and secure closure.

When the slider is moved up, the teeth or coils separate, allowing the opening to widen. Conversely, when the slider is moved down, the teeth or coils interlock, closing the opening. The pull tab makes it easy for the user to grip and move the slider.

Types of Zippers

There are several types of zippers available in the market. The most common types include:

  • Metal zippers: These are made of metal teeth and are commonly used in heavy-duty items such as jeans, jackets, and bags.
  • Plastic zippers: These are made of plastic teeth and are commonly used in lightweight items such as dresses and skirts.
  • Invisible zippers: These have teeth that are concealed on the backside of the tape, creating a seamless appearance. They are commonly used in dresses and skirts.
  • Coil zippers: These are made of nylon or polyester coils and are commonly used in items that require a flexible closure such as backpacks and sportswear.

Benefits of Using a Zipper

The primary benefit of using a zipper is that it provides a secure and convenient closure. It allows users to easily open and close an item, without having to fuss with buttons or other closures. Zippers are also durable and long-lasting, making them ideal for items that receive a lot of wear and tear.

Who Invented the Zipper

Zipper or zip, invented by Whitcomb Judson in 1891, but the patent was approved in May 1893. Thus, the working mechanism of the zipper is very simple, as explained below. Later the goal was to market the zipper, but the reliability of the device was challenged.

However, there are several changes are made in zipper by a Swedish inventor, Gideon Sundback. The improved design and modification to the zipper helped to gain more sales in the market, and then distributed in many countries.

Conclusion

A zipper is a mechanical device that is composed of two rows of teeth or coils that interlock or separate when the zipper is opened or closed. The slider moves up and down the teeth to open and close the zipper. Zippers are available in various types, including metal, plastic, invisible, and coil zippers. They provide a secure and convenient closure and are durable and long-lasting, making them ideal for various items.

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