Three-layer anti-static aluminum foil bag is a common anti-static packaging bag, which is mainly composed of three parts: the outer layer, the middle layer and the inner layer. The outer and inner layers are usually polyethylene plastic films, while the middle layer is an anti-static layer consisting of one or two layers of metal such as aluminum.
The reason why the three-layer anti-static aluminum foil bag can prevent static electricity is mainly because the metal layer of the middle layer can effectively conduct electricity, thus eliminating the accumulation of electric charge. When the external charge touches the bag, it will be conducted to the ground or other grounded objects through the metal layer, avoiding the accumulation and release of static electricity, thus protecting the internal items from static interference.
In terms of material selection, the outer and inner layers are usually made of plastic films made of polymers, which have good sealing and waterproof properties, and are suitable for packaging items that are susceptible to moisture or perishability such as food and medicine. The middle layer needs to choose a metal material with good conductivity, generally using aluminum foil or aluminized film, both of which have good conductivity, and the cost is low, easy to produce on a large scale.
In a word, the three-layer anti-static aluminum foil bag is a very practical packaging bag, which is widely used in electronic components, chemical products, medical equipment and other fields, and effectively solves the problem of the impact of static electricity on products.