The so-called air cushion film is actually a membrane like material with a bubble interlayer in the middle of the film. This film like material is made by extruding and melting low-density polyethylene resin through an extruder, and then forming two layers of film in a molding mold for extrusion; One layer of film is vacuum molded into a mold film bubble shape on the vacuum roller, and then combined with another layer of film to form a whole. The latter is tightly adhered to the opening width surface with the film bubble, and this composite film is a type of air cushion film. If a layer of film is also applied to the raised foam surface, it becomes a three-layer composite air cushion film. Due to the presence of a bubble layer in the middle of the three-layer composite air cushion film, this composite film is relatively lightweight and elastic. In addition, there are also features such as moisture-proof, shockproof, soundproof, aesthetically pleasing, insect proof, mold resistant, and cost-effective. According to the characteristics of composite air cushion film, people often use this film as packaging material for instrument air cushion watches, instruments, ceramics, and glassware.
