The PET three-layer protective film includes PET protective film, PET sheet and PET protective film. The hard bottom solution surface of the PET board is in contact with the PET protective film, and the non-hard bottom solution surface of the PET board is in contact with the PET protective film. According to the adhesive, Wherein, the PET protective film includes a PET protective film board, a PET protective film adhesive, and a scratch-resistant coating that is compatible with the surface of the hard bottom solution of the PET board. According to the above method, the protective film of the utility model patent has the functions of automatic adsorption and automatic exhaust pipe, can remove bubbles, has the characteristics of low viscosity, easy fall off, continuous adhesion, does not damage the practical application effect, long-term stability, and transparency The surface strength is high, the touch effect is good, the display screen is reasonably maintained, and it is not easy to bump and scratch the environment.

The screen protector is a completely transparent material. Currently, PET is selected as the key raw material. Ordinary screen protectors only have a dust-proof function, and better screen protectors have a scratch-proof function. Buttons are used for screen protection of various flat display screens, such as mobile phone displays, electronic device navigation bar displays, computer displays, various touch displays, etc.

At present, there are many types of protective films, and the key evaluation criteria for their quality are transparency and abrasion resistance. At present, the light transmittance of general-purpose protective films on the market is lower than 80%, which seriously affects the actual effect of the display and indirectly reduces the chromaticity of the display. Long-term use can improve eye fatigue; however, the PET sheet needs to go through a high-temperature solution in the case of hard primer. In a high temperature solution, due to the asymmetry of the molecular formula on the surface of the sheet, it is easy to cause transmission, and seven-color rainbow lines appear. The higher the toughness of the hard primer, the more difficult it is to manipulate the colorful rainbow line. The existence of the colorful rainbow line will endanger the light transmittance and visual impact of the protective film. At present, in order to better manipulate the seven-color rainbow line, the surface strength of the protective film is generally only about 3.5H.

The key technical problem of PET three-layer anti-scratch protective film is that in view of the shortcomings of the existing technology, a PET three-layer anti-scratch protective film is proposed, which has the functions of automatic adsorption and automatic exhaust pipe, and can remove air bubbles. Low viscosity, easy to separate, can be pasted continuously, does not damage the actual application effect, has the characteristics of long-term stability, high transparency and surface strength, very good touch effect, reasonable maintenance of the display screen, and not easy to bump.