Method for treating plastic plate of digital view window before surface ultraviolet (UV) coating

The invention discloses a method for treating a plastic plate of a digital view window before surface ultraviolet (UV) coating, which adopts pre-washing, hot air drying, baking annealing and flame treatment processes, and comprises the following steps: spraying and washing the surface of the plastic plate with mixed solution of an organic solvent and water; drying the washed plastic plate by clean hot air; drying the plastic plate in infrared and performing annealing treatment; and ablating the surface of the plastic plate in a flame treatment mode. When the preparation method of the invention is used, the surface of the optical plastic plate can be cleaned, the internal stress of the plastic plate can be eliminated, the surface activity of the plastic plate can be improved, and the coating quality of the plastic plate and the rate of qualified products can be improved considerably.