What are the common causes of antistatic wrist strap failure
Anti-static wrist straps are divided into corded wrist straps, cordless wrist straps and smart anti-static wrist straps. According to the structure, they are divided into single loop wrist straps and dual loop wrist straps, which are used to discharge the static electricity of the human body. It consists of an elastic band, a snap button, and a spring cord. Protective resistor and plug or chuck. The inner layer of the elastic band is knitted with antistatic yarn, and the outer layer is knitted with ordinary yarn.
The customer of this consultation is an electronics factory that produces electronic sensor chips for automobile engines. The anti-static wristbands ordered by them cannot pass the test of the human body comprehensive tester. On-site inspection by our engineering and technical personnel found that the problem was due to the defect of the anti-static yarn on the inner layer of the wristband, which could not play a conductive role, and only the metal part of the movable button really played a role.
Analyze the reasons. First, at present, the quality of many products in the domestic anti-static market is inferior. In addition, after using a wrist strap of poor quality for a period of time, the wire of the anti-static wrist strap is constantly bent, which eventually breaks the metal fibers in the wire. The wrist strap's anti-static function is disabled. The wristbands of major foreign brands have undergone strict suspension weight bending tests. The product technology, quality and processes are strictly monitored to ensure that the products can meet the specified number of bending times and have a service life of 1-2 years. There are also some high-quality products with almost no damage caused by normal wear and tear, providing customers with life-long quality assurance.