Can a commercial vehicle weighing 2.5 tons be lifted by six sets of Velcro? As we all know, the beauty of Velcro is that it sticks together to produce a natural sticky force, which will naturally separate when pulled by hand. This quick paste and separation function makes Velcro widely used in bags, clothes, and accessories. It is thanks to such a powerful fitting function that six sets of Velcro can lift a commercial vehicle high. It turned out that the two sides of the Velcro were made up of a hook surface and a fabric surface. Rows of fine hooks are distributed on the hook surface, while the fabric surface is a group of hairs clumping together. When hundreds or thousands of hooks are attached to the same amount of hair, the force they generate can withstand the huge pull from the car.
Even more interesting is that the invention of Velcro is an unintentional move. After Swiss engineer George de Mestral went home from hunting, he accidentally found some XanThium sibiricum stuck to his clothes. After observing Xanthium sibiricum with a microscope, he found that Xanthium sibiricum had a hook-shaped structure that could adhere to the fabric. The surface of the fabric is the fabric surface, so he thought of using a hook to fix the fabric surface. As a result, George de Mestral invented the Velcro. In fact, George de Metz learned and invented from nature, which is a typical case of bionics.
Information Source: http://ent.sina.com.cn/tv/zy/2017-08-03/doc-ifyitapp0095967.shtml
