Reasons for the failure of anti-static wrist strap
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 double-loop wrist straps. They are used to discharge static electricity from the human body. It consists of elastic bands, movable snaps, and spring cords. It is composed of protective resistor and plug or chuck. The inner layer of the elastic band is woven with anti-static yarn, and the outer layer is woven with ordinary yarn.
The customer is an electronics factory that produces electronic sensor chips for automobile engines, and the wrist strap ordered by him cannot pass the test of the human body comprehensive tester. Our engineers and technicians found that the problem was caused by the defect of the anti-static yarn in the inner layer of the wristband, which could not conduct conduction. Only the metal part of the movable button really worked. Analyze the reasons. First, at present, many products in the domestic anti-static market are of good quality. In addition, after using a poor quality wrist strap for a period of time, the continuous bending of the wire of the wrist strap will eventually cause the metal fiber in the wire to be disconnected. The anti-static function of the wrist strap fails. The anti-static wrist straps of major foreign brands have undergone rigorous bending tests for hanging heavy objects. The product process, quality and process are strictly monitored to ensure that the product can meet the specified number of bending times, and the service life is 1-2 years.