Patent ID: 9079375
Filing Date: 2015-07-14
Classification: B32B,B44C,B44F,Y10T

Abstract:
1. A decorative film structure, comprising: a surface layer constituted by a transparent or translucent resin layer; a metal luster layer constituted by a plurality of dots provided on a back surface of the surface layer; and an achromatic layer provided on the back surface of the surface layer to fill a gap between the dots of the metal luster layer, wherein as surface roughness of a front surface of the surface layer, an arithmetic average roughness Ra is 2 μm or less and either a maximum height Rmax is 4 μm or less or an average concave to convex distance Sm is 50 μm or more, a stimulus value Y45° of the metal luster layer, which is a value of Y in tristimulus values of color of an object due to reflection in an XYZ colorimetric system in a case where an illumination optical axis angle is −45°±2° and a received reflected light optical axis angle is 45°±2° with respect to a direction normal to the front surface of the metal luster layer, is 10000 or more, an area of each of the dots when viewed from a front side of the surface layer is 10 a dot area percentage per a unit area when viewed from the front side of the surface layer is 20-99%, and a lightness L* of the achromatic layer in an L*a*b* colorimetric system is 0-80, wherein, the surface layer constitutes a front surface of the decorative film structure, the achromatic layer absorbs part of light entering the decorative film structure from the front surface of the surface layer, and the metal luster layer causes specular reflection of part of the light and causes diffuse reflection of part of the light on a periphery of the metal luster layer.