Colored adhesive film capable of presenting different colors and preparation method thereof

The invention relates to a colored adhesive film, in particular to a colored adhesive film capable of presenting different colors and a preparation method of the colored adhesive film. By utilizing an optical film interference principle, optically variable pigment and matrix resin are directly subjected to double-screw granulation to obtain optically variable pigment functional master batches, and then a simple process method of tape casting extrusion is carried out, so that the colored adhesive film which can present different colors along with different viewing angles is obtained; according to the single-layer colored adhesive film prepared by the invention, a multi-layer co-extrusion packaging adhesive film is further designed, so that the influence of the addition of the optically variable pigment on the adhesive property is reduced, and the safety of a photovoltaic module is improved. 本发明涉及彩色胶膜，具体为一种可呈现不同颜色的彩色胶膜及其制备方法。利用光学薄膜干涉原理，通过将光变颜料和基体树脂直接进行双螺杆造粒获得光变颜料功能母粒，在进行流延挤出的简单工艺方法，获得可随着观看角度不同而呈现不同颜色的彩色胶膜；根据本发明