The situation is as follows:

1. Zipper, also known as zipper, is one of the top ten inventions in modern times that facilitates people’s lives;

2. In 1893 , an engineer named Judson in Chicago, USA, used small granular components as connectors, staggered on the edges of two cloth tapes;

3. Through a sliding piece To achieve the purpose of meshing or separating, this is the prototype of the current zipper. At that time, it was called "sliding fastener", also known as "movable button";

4. The popular "movable button" "Later, it was modified by a smart American. He enlarged the top of the granular components and made them have a certain arc, so that the components would not easily explode automatically and make people laugh;

5 , With the continuous development of technology and the unique designs of skilled craftsmen, today's zippers have become diverse, beautiful and durable.