Optical reflection composite film and preparation method thereof

The invention discloses an optical reflection composite film which is sequentially composed of a transparent base film, a hot melt adhesive layer, a reflection film and a reflection coating layer. The invention also discloses a preparation method of the optical reflective composite film, which comprises the following steps: compounding the hot melt adhesive layer on the surface of the transparent base film, coating the reflective coating on the surface of the reflective film, and then carrying out hot-pressing lamination to obtain the optical reflective composite film. According to the optical reflection composite film and the preparation method thereof, the production efficiency can be improved, the cost can be reduced, a good reflection effect can be ensured, the production process has a remarkable green and environment-friendly effect, and the optical reflection composite film is suitable for a reflection film in the field of OLED illumination. 本发明公开了一种光学反射复合膜，依次由透明基膜、热熔胶层、反射膜、反射凃层构成。本发明还公开了上述光学反射复合膜的制备方法，