Decorative film structure and decorative member

A decorative film structure, comprising:

• a surface layer constituted by a transparent or translucent resin layer;
• an achromatic layer constituted by a plurality of dots provided on a front surface of the surface layer;
• and
• a metal luster layer provided on a back surface of the surface layer, wherein
• as surface roughness of the 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 lightness L* of the achromatic layer in an L*a*b* colorimetric system is 0-80,
• an area of each of the dots when viewed from a front side of the surface layer is 10−3-105 μm2,
• a dot area percentage per a unit area when viewed from the front side of the surface layer is 1-80%,
• 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, and
• the dots of the achromatic layer absorb part of light entering the decorative film structure from the front surface of the surface layer and cause diffuse reflection of part of the light on peripheries of the dots.

A decorative member, comprising:

• a base material;
• and
• a decorative film structure provided on a surface of the base material, wherein
• the decorative film structure includes
• a surface layer constituted by a transparent or translucent resin layer;
• an achromatic layer constituted by a plurality of dots provided on a back surface of the surface layer;
• and
• a metal luster layer provided on the back surface of the surface layer to fill a gap between the dots of the achromatic layer,
• 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 lightness L* of the achromatic layer in an L*a*b* colorimetric system is 0-80,
• an area of each of the dots when viewed from a front side of the surface layer is 10−3-105 μm2,
• a dot area percentage per a unit area when viewed from the front side of the surface layer is 1-80%,
• 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 and
• the dots of the achromatic layer absorb part of light entering the decorative film structure from the front surface of the surface layer and cause diffuse reflection of part of the light on peripheries of the dots.

A decorative member, comprising:

• a base material;
• and
• a decorative film structure provided on a surface of the base material, wherein
• the decorative film structure includes
• a surface layer constituted by a transparent or translucent resin layer;
• an achromatic layer constituted by a plurality of dots provided on a front surface of the surface layer;
• and
• a metal luster layer provided on a back surface of the surface layer,
• as surface roughness of the 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 lightness L* of the achromatic layer in an L*a*b* colorimetric system is 0-80,
• an area of each of the dots when viewed from a front side of the front surface of the surface layer is 10−3-105 μm2,
• a dot area percentage per a unit area when viewed from the front side of the surface layer is 1-80%, and
• 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, and
• the dots of the achromatic layer absorb part of light entering the decorative film structure from the front surface of the surface layer and cause diffuse reflection of part of the light on peripheries of the dots.