The layer of adhesive tape outside the laser bag is also called laser film, and the manufacturing process of laser film is more complicated. Vacuum chamber aluminizing method was adopted. The evaporation boat is heated to 1400- 1500℃, and the aluminum wire continuously fed into the evaporation boat is cooled into aluminum vapor. Because the basement membrane has electrostatic adsorption, aluminum molecules are adsorbed on the surface of the film, and then cooled and deposited, so that aluminum is evenly sprayed on the surface of the continuously wound film to form an aluminized film, and then a laser engraving laser plate is wrapped on a roller at 130℃. The materials of laser film mainly include BOPP\PET\PVC, etc. Laser film can be divided into: transparent laser film, aluminized laser film, aluminized laser transfer film, laser dielectric film, dielectric transfer film, laser pre-coating film and so on.