| 摘要 |
PURPOSE: To provide a retroreflection display film in which brightness can be obtained by retroreflective light generated by irradiation of the solar rays or light of automobile, lighting from the inside or back face can be eliminated, large-scale installing work is unnecessary, maintenance work can be simplified, excellent safety can be obtained, and which can be utilized for a signboard or a display device which is free from electric charge for lighting. CONSTITUTION: A retroreflection display film consists of a primer layer 5 consisting of a transparent adhesive primer resin formed on a rear face 3 of a light transmitting film material 1 having an image film 2 on its one face, a layer of transparent spheres 6 having particle diameter of 20-100μm formed on the primer layer, an intermediate primer layer 7 consisting of a colorless transparent adhesive primer resin which fills spaces among the transparent spheres and is formed along the protruding spherical faces of the transparent spheres, a mirror reflective film layer 9 formed on the intermediate primer layer, and a protective backing resin layer 10 formed on the mirror reflective film layer.
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