JP5910289B2 - Decorative film structure and decorative molded member - Google Patents

Description

  The present invention belongs to the technical field of decorative film structures and decorative molded members that can be used for automobile interior parts and the like.

  For example, there is a case where a metal design for producing a high-class feeling is required for automobile interior parts such as a door handle. For this reason, chrome plating having excellent luster, silver-satin-like satin plating, and the like are known. However, chrome plating has too high specularity and may not match the atmosphere in the automobile interior. On the other hand, satin plating has a calm texture, but the process is complicated.

  Accordingly, there is a need for a technique that easily realizes a polished metal surface design that is not too strong and shines dull. As one measure for that purpose, a decorative film structure is proposed in which the optical characteristics are close to those of a metal polished surface and the appearance exhibits a metal polished surface design. Such a decorative film structure can be easily obtained by, for example, printing or painting each layer on the base material of the transfer film. Alternatively, it can be easily obtained by printing or painting each layer on the clear film which is the surface layer of the decorative film structure. And a base material can be easily decorated to a metal grinding | polishing surface tone by transcribe | transferring or adhere | attaching the obtained decorating film structure to a base-material surface. Alternatively, each layer of the decorative film structure may be printed or painted directly on the substrate surface.

  Patent Document 1 discloses that an optical thin film layer including a light absorbing layer composed of a high refractive index thin film layer, a low refractive index thin film layer, and / or a pure metal thin film layer is provided on a base material, whereby reflected brightness and reflected chroma are obtained. It is disclosed to obtain an optical thin film laminate including a light absorbing layer having a sufficiently large metallic luster. However, this technique is a technique for adding a metallic luster having a high reflection brightness to a substrate, and does not add a polished metal surface design with a suppressed gloss to the substrate.

JP 2009-83183 A (summary, FIGS. 1 to 5)

  An object of the present invention is to provide a decorative film structure and a decorative molded member whose appearance is a polished metal surface design, and easily realize a polished metal surface design that is not too glossy and shines dull. It is to be.

The decorative film structure according to one aspect of the present invention for solving the above problems is a surface layer composed of a transparent or translucent resin layer, a metallic luster layer formed on the back side of the surface layer, A light absorption layer comprising a plurality of fine dots formed on the surface side of the metallic luster layer or on the surface side of the surface layer, and the light absorption layer is defined by JIS-Z-8729. CIE1976 brightness (L ^* ) is 0 to 80, and CIE1976 color coordinates (a ^* , b ^* ) satisfy the relational expression of 0 <(a ^* ) ² + (b ^* ) ² <6400 The surface roughness of the surface layer is Ra ² μm or less, Rmax 4 μm or less, or Sm 50 μm or more, and the area of the fine dots in plan view is 10 ⁻³ to 10 ⁵ μm ² , The fine per unit area Area ratio of the dots is 1 to 80% the stimulus value in the XYZ color system defined in JIS-Z-8701 metallic luster layer (Y45 °) is Ru der 10000 or more.

Here, the CIE 1976 brightness (L ^* ) and IE 1976 color coordinates (a ^* , b ^* ) of the light absorbing layer defined in JIS-Z-8729 are defined in JIS-Z-8722 according to JIS-Z-8729. Measured under the following geometric conditions a (illumination optical axis angle with respect to the normal direction of the sample surface: −45 ± 2 °, received light reflection optical axis angle: 0 ± 2 °)

According to this configuration, a part of the light incident on the decorative film structure from the surface layer side is diffusely reflected by the surface roughness on the surface side of the surface layer, and the light is incident on the back surface side of the surface layer or the surface side of the surface layer. Part of the light absorbing layer is absorbed by the dod, and part of it is specularly reflected (specularly reflected) by the metallic luster layer on the back side of the surface layer. Also, part of the light is diffusely reflected by the peripheral edge of the light absorption layer. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, with optical properties close to the polished metal surface, and the appearance is polished metal surface. A decorative film structure exhibiting a design is obtained. In particular, when the CIE1976 lightness (L ^* ) of the light absorbing layer is 0 to 80, it is possible to suppress the gloss from becoming too strong, and to realize a dull shining textured metal polished surface design that is bright and dark. Sufficient absorbance is achieved. In addition, since the CIE 1976 color coordinates (a ^* , b ^* ) of the light absorption layer satisfy the relational expression of 0 <(a ^* ) ² + (b ^* ) ² <6400, a remarkable color tone depending on the viewing angle. The occurrence of a difference is suppressed, and sufficient light absorption is achieved to realize a dull shining textured metal polished surface design having a color tone characteristic of the polished metal surface.

A decorative film structure according to another aspect of the present invention includes a surface layer made of a transparent or translucent resin layer, a light absorption layer formed on the back side of the surface layer, and the light absorption. CIE 1976 brightness defined by JIS-Z-8729, wherein the light absorption layer includes a metallic luster layer composed of a plurality of fine dots formed on the surface side of the layer or on the surface side of the surface layer. ^{(L *)} at 0 to 80, and CIE1976 chromaticity coordinate ^(a *, ^{b *) is, 0 <(a *) 2} + (b *) all SANYO satisfying 2 <6400 relational expression, the The surface roughness of the surface layer on the surface side is Ra ² μm or less, Rmax 4 μm or less, or Sm 50 μm or more, and the area of the fine dots in plan view is 10 ⁻³ to 10 ⁵ μm ² , per unit area in plan view The area ratio of the fine dots And 20 to 99% stimulus values in the XYZ color system defined in JIS-Z-8701 metallic luster layer (Y45 °) is Ru der 10000 or more.

According to this configuration, a part of the light incident on the decorative film structure from the surface layer side is diffusely reflected by the surface roughness on the surface side of the surface layer, and partly reflected by the light absorption layer on the back surface side of the surface layer. Is absorbed, and a part of it is specularly reflected (specularly reflected) by the dots of the metallic luster layer on the back side of the surface layer or the surface side of the surface layer. Also, part of the light is diffusely reflected by the peripheral edge of the dots of the metallic gloss layer. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, with optical properties close to the polished metal surface, and the appearance is polished metal surface. A decorative film structure exhibiting a design is obtained. In this case as well, the CIE 1976 brightness (L ^* ) of the light absorption layer is 0 to 80, so that the gloss is suppressed from becoming too strong, realizing a dull and shiny textured metal polished surface design that is bright and dark. Absorbance sufficient to achieve this is achieved. In addition, since the CIE 1976 color coordinates (a ^* , b ^* ) of the light absorption layer satisfy the relational expression of 0 <(a ^* ) ² + (b ^* ) ² <6400, a remarkable color tone depending on the viewing angle. The occurrence of a difference is suppressed, and sufficient light absorption is achieved to realize a dull shining textured metal polished surface design having a color tone characteristic of the polished metal surface.

  Here, the stimulus value (Y45 °) of the metallic luster layer in the XYZ color system defined by JIS-Z-8701 is that the illumination optical axis angle with respect to the normal direction of the sample surface is −45 ± 2 °, and the light receiving reflection The Y value is calculated according to the definition of the tristimulus value of the object color by reflection in the XYZ color system defined by JIS-Z-8701, with the optical axis angle being 45 ± 2 °.

Thus, by setting Ra (arithmetic mean roughness) to 2 μm or less as the surface roughness on the surface side of the surface layer, sufficient diffuse reflection for realizing the metal polished surface design can be reliably obtained. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection for realizing a metal polished surface design can be reliably obtained. In addition, by setting the area of the dot in a plan view to 10 ⁻³ μm ² or more, the dot does not become too small, and light absorption by the light absorption layer is reliably performed. Further, by setting the dot area in plan view to 10 ⁵ μm ² or less, the dot area ratio is increased when the area ratio of dots per unit area in plan view is constant. , The diffuse reflection by the peripheral edge of the dot is reliably performed, and further, the dot does not become too large, and the deterioration of the appearance of the decorative film structure is suppressed. In addition, by setting the area ratio of dots per unit area in plan view to 1% or more, sufficient light absorption is reliably achieved to achieve a polished metal surface design that is not too glossy and dull. Is done. Further, by setting the area ratio of dots per unit area in plan view to 80% or less, the light absorption does not become excessive, and the excessive brightness and / or stimulation value of the decorative film structure is suppressed. The Further, by setting the stimulation value (Y45 °) of the metallic gloss layer to 10000 or more, sufficient regular reflection or metallic gloss for realizing a polished metal surface design can be obtained more reliably.

Thus, by setting Ra (arithmetic mean roughness) to 2 μm or less as the surface roughness on the surface side of the surface layer, sufficient diffuse reflection for realizing the metal polished surface design can be reliably obtained. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection for realizing a metal polished surface design can be reliably obtained. Further, by setting the stimulation value (Y45 °) of the metallic gloss layer to 10000 or more, sufficient regular reflection or metallic gloss for realizing the polished metal surface design can be surely obtained. Further, by setting the area of the dot in plan view to 10 ⁻³ μm ² or more, the dot does not become too small and regular reflection by the dot is surely performed. Further, by setting the dot area in plan view to 10 ⁵ μm ² or less, the dot area ratio is increased when the area ratio of dots per unit area in plan view is constant. , The diffuse reflection by the peripheral edge of the dot is reliably performed, and further, the dot does not become too large, and the deterioration of the appearance of the decorative film structure is suppressed. By setting the area ratio of dots per unit area in a plan view to 20% or more, that is, the area ratio of the light absorption layer per unit area in a plan view to 80% or less, the light absorption is not excessively increased. The excessive lightness and / or stimulation value of the decorative film structure is suppressed. Further, the area ratio of dots per unit area in plan view is 99% or less, that is, the area ratio of the light absorption layer per unit area in plan view is 1% or more, so that the gloss is not too strong and dull. Sufficient light absorption is reliably achieved to achieve a polished metal polished surface design.

  In each of the above decorative film structures, the surface roughness of the surface layer is more preferably Ra 1 μm or less, Rmax 2 μm or less, or Sm 100 μm or more.

  According to this configuration, more sufficient diffuse reflection can be obtained more reliably to realize a polished metal surface design.

In each of the above decorative film structures, it is more preferable that the CIE1976 lightness (L ^* ) defined by JIS-Z-8729 of the light absorption layer is 0-50.

  According to this configuration, light absorption for realizing a polished metal surface design having a texture that is not too strong and shines dull is achieved more reliably.

  In the above-described decorative film structure, it is preferable that the area ratio of dots of the light absorption layer is 1 to 60% for the light absorption layer that is a fine dod.

  According to this structure, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of a decoration film structure is suppressed further.

  In the above-described decorative film structure, the stimulation value (Y45 °) in the XYZ color system defined by JIS-Z-8701 of the metallic gloss layer is preferably 20000 or more.

  According to this configuration, sufficient regular reflection or metallic luster to realize a polished metal surface design can be obtained more reliably.

  In the above-described decorative film structure, it is preferable that an area ratio of the fine dots of the metallic gloss layer is 40 to 99% for a metal gloss layer that is a fine dot.

  According to this structure, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of a decoration film structure is suppressed further.

  On the other hand, the decorative molded member according to one aspect of the present invention is such that the decorative film structure as described above is formed on the surface side of the substrate.

  According to this configuration, it is possible to obtain a decorative molded member whose optical characteristics are close to a metal polished surface and whose appearance exhibits a metal polished surface design.

  In the decorative molded member, the base material is preferably a resin molded member.

  According to this configuration, it is possible to increase the degree of freedom of the shape of the decorative molded member whose optical characteristics are close to those of a metal polished surface and whose appearance exhibits a metal polished surface design.

In addition, the decorative molded member according to another aspect of the present invention includes a surface layer made of a transparent or translucent resin layer, and a plurality of surface layers formed on the surface side and / or the back surface side of the surface layer. The film structure provided with a metallic gloss layer composed of fine dots of CIE 1976 brightness (L ^* ) defined by JIS-Z-8729 on the surface is 0 to 80, and CIE 1976 color coordinates (a ^* , b ^* ) Is provided on the surface side of the base material formed to satisfy the relational expression of 0 <(a ^* ) ² + (b ^* ) ² <6400, and the surface roughness of the surface layer of the surface layer is Ra ² μm or less, Rmax 4 μm or less, or Sm 50 μm or more, the area of the fine dots in plan view is 10 ⁻³ to 10 ⁵ μm ² , and the area ratio of the fine dots per unit area in plan view is 20 to 20 99%, Serial stimulus values in the XYZ color system defined in JIS-Z-8701 metallic luster layer (Y45 °) is Ru der 10000 or more.

According to this configuration, a part of the light incident on the decorative molded member from the surface layer side is diffusely reflected by the surface roughness of the surface side of the surface layer, and part of the light is absorbed by the surface of the base material. Part of the surface is specularly reflected (specularly reflected) by the dots of the metallic luster layer on the front side and / or back side. Also, part of the light is diffusely reflected by the peripheral edge of the dots of the metallic gloss layer. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, with optical properties close to the polished metal surface, and the appearance is polished metal surface. A decorative molded member having a design is obtained. In particular, since the CIE 1976 lightness (L ^* ) of the base material is 0 to 80, it is possible to suppress the gloss from becoming too strong, and to realize a dull shining textured metal polished surface design that is bright and dark. Sufficient absorbance is achieved. In addition, since the CIE 1976 color coordinates (a ^* , b ^* ) of the light absorption layer satisfy the relational expression of 0 <(a ^* ) ² + (b ^* ) ² <6400, a remarkable color tone depending on the viewing angle. The occurrence of a difference is suppressed, and sufficient light absorption is achieved to realize a dull shining textured metal polished surface design having a color tone characteristic of the polished metal surface.

A decorative molded member according to another aspect of the present invention includes a surface layer made of a transparent or translucent resin layer and a plurality of micropores, and the micropores are filled with the surface layer. The film structure provided with a metallic luster layer formed on the surface side and / or the back surface side of the surface layer has a CIE 1976 lightness (L ^* ) defined by JIS-Z-8729 on the surface. 0 to 80 and the CIE 1976 color coordinates (a ^* , b ^* ) are on the surface side of the substrate formed so as to satisfy the relational expression of 0 <(a ^* ) ² + (b ^* ) ² <6400 The surface roughness of the surface layer of the surface layer is Ra ² μm or less, Rmax 4 μm or less, or Sm 50 μm or more, and the area of the micropore in plan view is 10 ⁻³ to 10 ⁵ μm ² , Per unit area in visual The area ratio of the fine pore is 1 to 80% the stimulus value in the XYZ color system defined in JIS-Z-8701 metallic luster layer (Y45 °) is 10,000 or more.

According to this configuration, a part of the light incident on the decorative molded member from the surface layer side is diffusely reflected by the surface roughness of the surface side of the surface layer, and part of the light is absorbed by the surface of the base material. A part is specularly reflected (specularly reflected) by the metallic luster layer (parts other than the fine holes) on the front side and / or the back side. Also, part of the light is diffusely reflected by the peripheral edge of the fine hole of the metallic luster layer. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, with optical properties close to the polished metal surface, and the appearance is polished metal surface. A decorative molded member having a design is obtained. Also in this case, when the CIE 1976 brightness (L ^* ) of the base material is 0 to 80, it is possible to suppress the gloss from becoming too strong, and to realize a dull and shiny textured metal polished surface design that is bright and dark. Sufficient absorption is achieved. In addition, since the CIE 1976 color coordinates (a ^* , b ^* ) of the light absorption layer satisfy the relational expression of 0 <(a ^* ) ² + (b ^* ) ² <6400, a remarkable color tone depending on the viewing angle. The occurrence of a difference is suppressed, and sufficient light absorption is achieved to realize a dull shining textured metal polished surface design having a color tone characteristic of the polished metal surface.

  As described above, according to the present invention, since a decorative film structure and a decorative molded member having an appearance that exhibits a polished metal surface design are provided, the polished metal surface is not too strong and shines dull. The design can be easily realized.

BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal cross-sectional view which shows the layer structure of the decoration film structure which concerns on one Embodiment of this invention, and a decoration shaping | molding member, Comprising: (A) is what the light absorption layer was formed in the back surface side of the surface layer, ( In B), the light absorption layer is formed on the surface side of the surface layer. It is a longitudinal cross-sectional view which shows the layer structure of the decorative film structure which concerns on other one Embodiment of this invention, and a decorative molded member, Comprising: (A) is what the metallic luster layer was formed in the back surface side of the surface layer , (B) is one in which a metallic luster layer is formed on the surface side of the surface layer. It is a longitudinal cross-sectional view which shows the layer structure of the decorative molded member which concerns on other one Embodiment of this invention, Comprising: (A) is what the metal luster layer which consists of a some fine dot was formed in the surface side of the surface layer , (B) is a metal glossy layer comprising a plurality of fine dots formed on the back side of the surface layer, (C) is a metal glossy layer comprising a plurality of fine dots formed on the back side of the surface layer, and A filling layer is formed. It is a longitudinal cross-sectional view which shows the layer structure of the decorative shaping | molding member which concerns on other one Embodiment of this invention, Comprising: (A) is what the metal luster layer which has several micropores was formed in the surface side of the surface layer (B) is a metal glossy layer having a plurality of fine holes formed on the back side of the surface layer, (C) is a metal glossy layer having a plurality of fine holes formed on the back side of the surface layer, and A filling layer is formed. It is a graph which shows the result of having measured CIE1976 color coordinates (b ^* value) about the decorating film structure and satin plating surface concerning the present invention.

  The inventors of the present invention have repeatedly studied with the goal of realizing a polished metal surface design with a glossy texture that is not too strong and that shines with a decorative film structure having a structure in which a plurality of layers are laminated. As a result, attention was paid to the fact that diffuse reflection, light absorption, and regular reflection (specular reflection) of light incident on the decorative film structure are important elements for realizing a polished metal surface design. The diffuse reflection can be reproduced by the surface roughness of the surface layer of the decorative film structure, the light absorption can be reproduced by a light absorbing layer such as a light absorbing layer having a relatively low brightness, and the regular reflection is stimulated. We found that it is possible to reproduce with a metallic gloss layer with a relatively high value, and after forming each layer with an appropriate arrangement, balance the amount of light incident on the light absorption layer and metallic gloss layer by their area etc. It was found that the appearance of a polished metal surface design in which diffuse reflection, absorption, and regular reflection of light are mixed can be obtained.

  However, in the decorative film structure having a structure in which a plurality of layers are laminated, it is caused by light interference due to the difference in the light reflecting surface, and the color tone when viewed from a specific angle range and other angle ranges There may be a difference in color tone. Although there is no difference in color tone depending on the angle at which the actual polished metal surface is viewed, the difference is relatively small. If the above-mentioned color tone difference is significant, the trueness (realism) of the polished metal surface is hindered. As a result, the commercial value of the decorative film structure exhibiting a polished metal surface design is significantly reduced.

  Therefore, the present inventor, based on such knowledge and ingenuity, repeats various tests, so that the gloss is not too strong, has a dull texture, and there is little color difference depending on the viewing angle. A decorative film structure 10A capable of providing a design was completed.

  That is, the decorative film structure 10A according to the present embodiment includes a surface layer 1 made of a transparent or translucent resin layer and a plurality of surfaces formed on the back side of the surface layer 1, as shown in FIG. And a metallic luster layer 3 formed on the back side of the surface layer 1 so as to fill the space between the dots of the light absorption layer 2. Here, the surface layer 1 has a diffuse reflection function, the light absorption layer 2 has a light absorption function and a diffuse reflection function, and the metallic luster layer 3 has a regular reflection function.

  In this decorative film structure 10 </ b> A, the metallic gloss layer 3 is observed from the gap between the dots by disposing a part of the metallic gloss layer 3 in the gap between the dots of the light absorption layer 2. Therefore, when the decorative film structure 10A is viewed from the surface layer 1 side having the diffuse reflection function, the light absorption layer 2 having the light absorption function is finely scattered in the metallic luster layer 3 having the regular reflection function. doing.

  According to such a configuration, a part of the light incident on the decorative film structure 10 </ b> A from the surface layer 1 side is diffusely reflected by the surface roughness of the surface layer 1. Part of the light absorption layer 2 absorbs light, part of it is diffusely reflected by the peripheral edge of the dot, and part of it is specularly reflected (specularly reflected) by the metallic luster layer 3 on the back side of the surface layer 1. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, optical properties are close to the polished surface, and the appearance is polished metal A decorative film structure 10A having a surface design is obtained. In particular, when the light absorption layer 2 satisfies certain conditions to be described later, it is possible to suppress a significant color difference depending on the viewing angle, which is sufficient to realize a metal polished surface design having a color tone specific to the metal polished surface. Light absorption is achieved, and a decorative film structure 10A having optical properties closer to a polished metal surface is obtained.

  FIG. 1A shows a configuration in which the metallic gloss layer 3 is also present on the back side of the dots of the light absorbing layer 2 and a part of the metallic gloss layer 3 is disposed in the gap between the dots of the light absorbing layer 2. However, the present invention is not limited to this, and the metallic gloss layer 3 does not exist on the back side of the dots of the light absorption layer 2, and the entire metallic gloss layer 3 is disposed in the gap between the dots of the light absorption layer 2. It may be configured.

  Further, as shown in FIG. 1B, another decorative film structure 10A according to the present embodiment is formed on the surface layer 1 made of a transparent or translucent resin layer and on the surface side of the surface layer 1. In addition, a light absorbing layer 2 composed of a plurality of fine dots and a metallic gloss layer 3 formed on the back side of the surface layer 1 are provided. Here, the surface layer 1 has a diffuse reflection function, the light absorption layer 2 has a light absorption function and a diffuse reflection function, and the metallic luster layer 3 has a regular reflection function.

  In this decorative film structure 10A, the metallic gloss layer 3 is observed from the gap between the dots by disposing the metallic gloss layer 3 under the light absorption layer 2. Therefore, when the decorative film structure 10A is viewed from the surface layer 1 side having the diffuse reflection function, the light absorption layer 2 having the light absorption function is finely scattered in the metallic luster layer 3 having the regular reflection function. doing.

  According to such a configuration, a part of the light incident on the decorative film structure 10 </ b> A from the surface layer 1 side is diffusely reflected by the surface roughness of the surface layer 1. Part of the light absorption layer 2 absorbs light, part of it is diffusely reflected by the peripheral edge of the dot, and part of it is specularly reflected (specularly reflected) by the metallic luster layer 3 on the back side of the surface layer 1. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, optical properties are close to the polished surface, and the appearance is polished metal A decorative film structure 10A having a surface design is obtained. Also in this configuration, when the light absorption layer 2 satisfies certain conditions described later, it is possible to suppress a significant color tone difference depending on the viewing angle, and to realize a metal polished surface design having a color tone specific to the metal polished surface. Therefore, sufficient light absorption is achieved, and a decorative film structure 10A having optical characteristics closer to a metal polished surface is obtained.

  In the present embodiment, the diffuse reflection function refers to 20% of the reflected light intensity when reflecting visible light (wavelength: 420 to 670 nm, spread angle: substantially zero degree) incident from the outside at an incident angle of 45 degrees. This refers to the function of reflecting in a direction other than the direction within the regular reflection angle of ± 3 degrees. Alternatively, when visible light (wavelength: 380 to 780 nm, spread angle: substantially zero degree) incident from the outside at an incident angle of 90 degrees is transmitted, a direction within 5% of the transmitted light intensity is within a normal transmission direction angle of ± 3 degrees A function that changes the angle in directions other than. The light absorption function refers to a function of absorbing or transmitting 20% or more of the intensity of visible light (wavelength: 420 to 670 nm, spread angle: substantially zero degree) incident from the outside at an incident angle of 90 degrees. Preferably, when the incident visible light is reflected, the difference in reflectance for each wavelength (420 to 670 nm) is within ± 10%. The regular reflection function means that when visible light (wavelength: 420 to 670 nm, spread angle: substantially zero degree) incident from the outside at an incident angle of 45 degrees is reflected, 90% or more of the reflected light intensity is a regular reflection angle ± The function of reflecting in a direction within 3 degrees. The definitions of the diffuse reflection function, the light absorption function, and the regular reflection function are the same for other embodiments described later.

In the present embodiment, the surface roughness (Ra, Rmax, Sm) on the surface side of the surface layer 1, the lightness (L ^* ) of the light absorption layer 2, the color (color coordinates (a ^* , b ^* )) of the light absorption layer 2. ), By adjusting the dot area of the light absorption layer 2, the area ratio of the dots of the light absorption layer 2, and the stimulation value (Y45 °) of the metallic gloss layer 3, the metal polished surface design of the decorative film structure 10 </ b> A The degree of diffuse reflection of light, the degree of regular reflection of light, and the degree of light absorption can be independently adjusted to desired values.

  In the present embodiment, the surface roughness of the surface side of the surface layer 1 is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more. By setting Ra (arithmetic mean roughness) to 2 μm or less, sufficient diffuse reflection can be reliably obtained to realize a polished metal surface design. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection for realizing a metal polished surface design can be reliably obtained.

  The surface roughness on the surface side of the surface layer 1 is more preferably Ra 1 μm or less, Rmax 2 μm or less, or Sm 100 μm or more. Thereby, sufficient diffuse reflection for realizing a polished metal surface design can be obtained more reliably.

In this embodiment, the CIE1976 lightness (L ^* ) defined by JIS-Z-8729 of the light absorption layer 2 is 0-80. By setting the lightness (L ^* ) of the light absorption layer 2 to 80 or less, it is possible to prevent the gloss from becoming too strong, and to realize a dull textured polished metal polished surface design that is bright and dark. Absorption is achieved.

The lightness (L ^* ) of the light absorption layer 2 is more preferably 0-50. Thereby, sufficient light absorption is achieved more reliably to realize a polished metal surface finish design that is not too strong and shines dull.

Further, the CIE 1976 color coordinates (a ^* , b ^* ) of the light absorption layer 2 satisfy the relational expression of 0 <(a ^* ) ² + (b ^* ) ² <6400. When the color coordinates (a ^* , b ^* ) satisfy such a relational expression, a dull shining textured metal-polished surface design that is less affected by the viewing angle and has a unique color tone to the metal-polished surface is realized. Sufficient absorption is achieved. That is, in the decorative film structure 10A having a plurality of layers as described above, the color tone is the light receiving angle (the angle at which the decorative film structure 10A is viewed; the normal direction of the decorative film structure 10A and the light receiving reflection optical axis). Is small, the color tone of the light absorption layer 2 tends to be reflected, and the light reception angle tends to be easily affected by light interference due to the difference in the reflection surface. This is one of the causes of the difference in color tone of the decorative film structure 10A depending on the viewing angle (light receiving angle). The color coordinates (a ^* , b ^* ) of the light absorption layer 2 satisfy the above relational expression. As a result, it is possible to suppress a significant change in color tone due to a difference in the light receiving angle, and to achieve a light absorption sufficient to realize a dull shining textured metal polished surface design having a unique color tone on the polished metal surface. .

In the present embodiment, the area of the dots in plan view is 10 ⁻³ to 10 ⁵ μm ² . By setting the area of the dots to 10 ⁻³ μm ² or more, the dots do not become too small, and light absorption by the dots is reliably performed. By setting the dot area to 10 ⁵ μm ² or less, when the area ratio of dots per unit area in a plan view is constant, the number of dots increases. Diffuse reflection by the peripheral edge portion is reliably performed. Moreover, a dot does not become large too much and the fall of the appearance of 10 A of decorating film structures is suppressed.

  In the present embodiment, the area ratio of dots per unit area in plan view is 1 to 80%. By setting the dot area ratio to 1% or more, sufficient light absorption can be reliably achieved to realize a metal polished surface design having a texture that is not too strong and shines dull. By setting the area ratio of the dots to 80% or less, the light absorption does not become excessive, and the excessive brightness and / or stimulation value of the decorative film structure 10A is suppressed.

  The area ratio of dots of the light absorption layer 2 is more preferably 1 to 60%. Thereby, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of the decorative film structure 10A is suppressed further.

  In the present embodiment, the stimulation value (Y45 °) in the XYZ color system defined by JIS-Z-8701 of the metallic luster layer 3 is 10,000 or more. By setting the stimulation value (Y45 °) of the metallic luster layer 3 to 10,000 or more, sufficient regular reflection or metallic luster can be surely obtained to realize a polished metal surface design.

  The stimulation value (Y45 °) of the metallic luster layer 3 is more preferably 20000 or more. Thereby, sufficient regular reflection thru | or metallic luster in order to implement | achieve a metal grinding | polishing surface design can be obtained more reliably.

  The decorative film structure 10A can be easily obtained by printing or painting the layers 1 to 3 on a base material (not shown) of a transfer film, for example. Or it can obtain easily by printing or painting each layer 2 and 3 to the clear film used as the surface layer 1 of the decorative film structure 10A. And the base material 5 can be easily decorated to a metal grinding | polishing surface tone by transcribe | transferring or adhere | attaching the obtained decorating film structure 10A to the surface of the base material 5. FIG. Alternatively, the layers 1 to 3 of the decorative film structure 10 </ b> A may be directly printed or painted on the surface of the substrate 5.

  In this way, a decorative molded member 20A in which the decorative film structure 10A is formed on the surface side of the substrate 5 is obtained. The decorative molded member 20A has optical characteristics close to the metal polished surface, and the appearance exhibits a polished metal surface design.

  The substrate 5 is preferably a resin molded member. This is because the degree of freedom of the shape of the decorative molded member 20 </ b> A whose optical characteristics are close to the metal polished surface and whose appearance exhibits the metal polished surface design can be increased.

  In FIG. 1, reference numeral 4 is an adhesive layer for adhering the backing layer and / or the decorative film structure 10 </ b> A for pressing the metallic gloss layer 3 to the surface layer 1. Further, a protective layer (not shown) for preventing the metallic gloss layer 3 from being eroded or corroded by the backing layer (adhesive layer) 4 is provided between the metallic gloss layer 3 and the backing layer (adhesive layer) 4. May be.

  Next, another embodiment of the present invention will be described.

  As shown in FIG. 2A, the decorative film structure 10B includes a surface layer 11 made of a transparent or translucent resin layer, and a metallic luster made of a plurality of fine dots formed on the back side of the surface layer 11. The layer 12 and the light absorption layer 13 formed on the back surface side of the surface layer 11 so as to fill the space between the dots of the metallic gloss layer 12 are provided. Here, the surface layer 11 has a diffuse reflection function, the metallic luster layer 12 has a regular reflection function and a diffuse reflection function, and the light absorption layer 13 has a light absorption function.

  In this decorative film structure 10 </ b> B, a part of the light absorption layer 13 is disposed in the gap between the dots of the metallic gloss layer 12, whereby the light absorption layer 13 is observed from the gap between the dots. Therefore, when this decorative film structure 10B is viewed from the surface layer 11 side having the diffuse reflection function, the metallic luster layer 12 having the regular reflection function is finely scattered in the light absorption layer 13 having the light absorption function. doing.

  According to such a configuration, part of the light incident on the decorative film structure 10 </ b> B from the surface layer 11 side is diffusely reflected by the surface roughness of the surface layer 11. A part of the light is absorbed by the light absorption layer 13, and a part of the metallic luster layer 12 on the back side of the front surface layer 11 is specularly reflected (specular reflection), and a part is diffusely reflected by the peripheral edge of the dot. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, optical properties are close to the polished surface, and the appearance is polished metal A decorative film structure 10B exhibiting a surface design is obtained. In particular, when the light absorption layer 13 satisfies certain conditions described later, it is possible to suppress a significant color tone difference depending on the viewing angle, to achieve sufficient light absorption for realizing a metal polished surface design, and to achieve optical characteristics. Is obtained, the decorative film structure 10B closer to the polished metal surface.

  In FIG. 2A, the light absorption layer 13 is also present on the back side of the dots of the metallic gloss layer 12, and a part of the light absorption layer 13 is disposed in the gap between the dots of the metal gloss layer 12. However, the present invention is not limited thereto, and the light absorption layer 13 does not exist on the back side of the dots of the metallic gloss layer 12, and the entire light absorption layer 13 is disposed in the gap between the dots of the metal gloss layer 12. It may be configured.

  As shown in FIG. 2B, another decorative film structure 10B according to the present embodiment is formed on the surface layer 11 made of a transparent or translucent resin layer and on the surface side of the surface layer 11. In addition, a metallic luster layer 12 composed of a plurality of fine dots and a light absorption layer 13 formed on the back side of the surface layer 11 are provided. Here, the surface layer 11 has a diffuse reflection function, the metallic luster layer 12 has a regular reflection function and a diffuse reflection function, and the light absorption layer 13 has a light absorption function.

  In this decorative film structure 10 </ b> B, the light absorption layer 13 is observed from the gap between the dots by disposing the light absorption layer 13 below the metallic gloss layer 12. Therefore, when this decorative film structure 10B is viewed from the surface layer 11 side having the diffuse reflection function, the metallic luster layer 12 having the regular reflection function is finely scattered in the light absorption layer 13 having the light absorption function. doing.

  With such a configuration, a part of the light incident on the decorative film structure 10B from the surface layer 11 side is diffusely reflected by the surface roughness on the surface side of the surface layer 11, and light absorption on the back surface side of the surface layer 11 is performed. A part of the light is absorbed by the layer 13, and a part of the surface of the metallic gloss layer 12 on the surface side of the surface layer 11 is specularly reflected (specular reflection), and a part of the dot is diffusely reflected by the peripheral edge of the dot. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, optical properties are close to the polished surface, and the appearance is polished metal A decorative film structure 10B exhibiting a surface design is obtained. Also in this configuration, when the light absorption layer 13 satisfies a certain condition described later, a significant color tone difference is suppressed depending on the viewing angle, and a metal polished surface design having a color tone specific to the metal polished surface is realized. Therefore, the light absorption sufficient to achieve this is achieved, and the decorative film structure 10A having optical characteristics closer to the metal polished surface is obtained.

In the present embodiment, the surface roughness (Ra, Rmax, Sm) on the surface side of the surface layer 11, the lightness (L ^* ) of the light absorption layer 13, the color (color coordinates (a ^* , b ^* )) of the light absorption layer 13. ), By adjusting the stimulation value (Y45 °) of the metallic gloss layer 12, the area of the dots of the metallic gloss layer 12, and the area ratio of the dots of the metallic gloss layer 12, the polished metal surface tone of the decorative film structure 10 </ b> B The degree of diffuse reflection of light, the degree of regular reflection of light, and the degree of light absorption in the design can be independently adjusted to desired values.

  In the present embodiment, the surface roughness of the surface side of the surface layer 11 is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more. By setting Ra (arithmetic mean roughness) to 2 μm or less, sufficient diffuse reflection can be reliably obtained to realize a polished metal surface design. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection for realizing a metal polished surface design can be reliably obtained.

  The surface roughness on the surface side of the surface layer 11 is more preferably Ra 1 μm or less and Rmax 2 μm or less or Sm 100 μm or more. Thereby, sufficient diffuse reflection for realizing a polished metal surface design can be obtained more reliably.

In the present embodiment, the CIE 1976 brightness (L ^* ) defined by JIS-Z-8729 of the light absorption layer 13 is 0-80. By setting the lightness (L ^* ) of the light absorption layer 2 to 80 or less, it is possible to prevent the gloss from becoming too strong, and to realize a dull textured polished metal polished surface design that is bright and dark. Absorption is achieved.

The lightness (L ^* ) of the light absorption layer 13 is more preferably 0-50. Thereby, sufficient light absorption is achieved more reliably to realize a polished metal surface finish design that is not too strong and shines dull.

Further, the CIE 1976 color coordinates (a ^* , b ^* ) of the light absorption layer 13 satisfy the relational expression of 0 <(a ^* ) ² + (b ^* ) ² <6400. When the color coordinates (a ^* , b ^* ) satisfy such a relational expression, a dull shining textured metal-polished surface design that is less affected by the viewing angle and has a unique color tone to the metal-polished surface is realized. Sufficient absorption is achieved. That is, since this decorative film structure 10B is also composed of a plurality of layers in the same manner as the above-described decorative film structure 10A, the color tone is small when the light receiving angle (the angle at which the decorative film structure 10B is viewed) is small. The color tone of the light absorbing layer 13 is easily reflected, and the light receiving layer is easily affected by light interference or the like, but the color coordinates (a ^* , b ^* ) of the light absorbing layer 13 are related to the above relational expression. By satisfying the above, it is possible to prevent the color tone from changing significantly due to the difference in the light receiving angle, and to absorb the light enough to realize a dull shining textured metal polished surface design with a unique color tone on the polished metal surface. Is achieved.

  In the present embodiment, the stimulation value (Y45 °) in the XYZ color system defined by JIS-Z-8701 of the metallic luster layer 12 is 10,000 or more. By setting the stimulation value (Y45 °) of the metallic gloss layer 12 to 10000 or more, sufficient regular reflection or metallic luster can be surely obtained to realize a polished metal surface design.

  The stimulation value (Y45 °) of the metallic luster layer 12 is more preferably 20000 or more. Thereby, sufficient regular reflection thru | or metallic luster in order to implement | achieve a metal grinding | polishing surface design can be obtained more reliably.

In the present embodiment, the area of the dots in plan view is 10 ⁻³ to 10 ⁵ μm ² . By setting the area of the dot to 10 ⁻³ μm ² or more, the dot does not become too small, and regular reflection by the dot is surely performed. By setting the dot area to 10 ⁵ μm ² or less, when the area ratio of dots per unit area in a plan view is constant, the number of dots increases. Diffuse reflection by the peripheral edge portion is reliably performed. Moreover, a dot does not become large too much and the fall of the appearance of the decoration film structure 10B is suppressed.

  In the present embodiment, the area ratio of dots per unit area in plan view is 20 to 99%. By setting the area ratio of the dots to 20% or more, the area ratio of the light absorption layer 13 per unit area in a plan view is 80% or less, the light absorption is not excessive, and the decorative film structure 10B is excessive. The decrease in brightness and / or stimulation value is suppressed. By setting the area ratio of the dots to 99% or less, the area ratio of the light absorption layer 13 per unit area in a plan view is 1% or more, and the metal polished surface design with a dull shining texture that is not excessively glossy. Sufficient absorbance is reliably achieved to achieve.

  The area ratio of dots of the metallic gloss layer 12 is more preferably 40 to 99%. Thereby, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of the decorative film structure 10B is suppressed further.

  The decorative film structure 10B can be easily obtained by printing or painting the layers 11 to 13 on a base material (not shown) of a transfer film, for example. Or it can obtain easily by printing or painting each layer 12 and 13 on the clear film used as the surface layer 11 of the decorative film structure 10B. And the base material 15 can be easily decorated to a metal grinding | polishing surface tone by transcribe | transferring or adhere | attaching the obtained decorating film structure 10B to the surface of the base material 15. FIG. Alternatively, the layers 11 to 13 of the decorative film structure 10B may be printed or painted directly on the surface of the substrate 15.

  In this way, a decorative molded member 20B in which the decorative film structure 10B is formed on the surface side of the base material 15 is obtained. This decorative molded member 20B has optical properties close to the metal polished surface, and the appearance exhibits a polished metal surface design.

  The substrate 15 is preferably a resin molded member. This is because the degree of freedom of the shape of the decorative molded member 20 </ b> B whose optical characteristics are close to the polished metal surface and whose appearance exhibits a polished metal surface design can be increased.

  In FIG. 2, reference numeral 14 denotes an adhesive layer for adhering the backing layer and / or the decorative film structure 10 </ b> B for pressing the light absorbing layer 13 to the surface layer 11 to the base material 15. Further, a protective layer (not shown) for preventing the light absorbing layer 13 from being eroded or corroded by the backing layer (adhesive layer) 14 is provided between the light absorbing layer 13 and the backing layer (adhesive layer) 14. May be.

  Next, still another embodiment of the present invention will be described.

  As shown in FIG. 3A, the decorative molded member 20C includes a surface layer 21 made of a transparent or translucent resin layer, and a metallic luster layer made of a plurality of fine dots formed on the surface side of the surface layer 21. 22 is formed on the surface side of the base material 24.

  As shown in FIG. 3B, another decorative molded member 20C according to the present embodiment is formed on the surface layer 21 made of a transparent or translucent resin layer and on the back surface side of the surface layer 21. A film structure 10 </ b> C provided with a metallic gloss layer 22 composed of a plurality of fine dots is formed on the surface side of the substrate 24.

  As shown in FIG. 3C, another decorative molded member 20C according to the present embodiment is formed on the surface layer 21 made of a transparent or translucent resin layer and on the back surface side of the surface layer 21. A film structure 10C having a metallic gloss layer 22 composed of a plurality of fine dots and a transparent or translucent filling layer 25 formed on the back surface side of the front surface layer 21 so as to fill the space between the dots of the metallic gloss layer 22 is provided. It is formed on the surface side of the substrate 24.

  Here, the surface layer 21 has a diffuse reflection function, the metallic luster layer 22 has a regular reflection function and a diffuse reflection function, and the surface of the substrate 24 has a light absorption function.

  In these decorative molded members 20C, the surface of the substrate 24 is observed from the gaps between the dots because the metallic gloss layer 22 is composed of a plurality of fine dots. Therefore, when this decorative molded member 20C is viewed from the surface layer 21 side having the diffuse reflection function, the metallic luster layer 22 having the regular reflection function is finely scattered in the surface of the base material 24 having the light absorption function. Yes.

  According to such a configuration, part of the light incident on the decorative molded member 20 </ b> C from the surface layer 21 side is diffusely reflected by the surface roughness on the surface side of the surface layer 21, and partly reflected by the surface of the base material 24. Is absorbed, and part of the surface of the front surface 21 or the back side of the metallic luster layer 22 is specularly reflected (specularly reflected), and partly diffused and reflected by the peripheral edge of the dot. A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, optical properties are close to the polished surface, and the appearance is polished metal A decorative molded member 20C exhibiting a surface design is obtained. In particular, when the base material 24 satisfies certain conditions described later, the occurrence of a significant color tone difference is suppressed depending on the viewing angle, sufficient light absorption is achieved to realize a metal polished surface design, and the optical characteristics are improved. A decorative molded member 20C closer to the polished metal surface is obtained.

  FIG. 3C shows a configuration in which the filling layer 25 also exists on the back side of the dots of the metallic gloss layer 22 and a part of the filling layer 25 is arranged in the gap between the dots of the metallic gloss layer 22. However, the present invention is not limited to this, and there may be a configuration in which the filling layer 25 does not exist on the back side of the dots of the metallic gloss layer 22 and the entire filling layer 25 is disposed in the gap between the dots of the metallic gloss layer 22.

In the present embodiment, the surface roughness (Ra, Rmax, Sm) on the surface side of the surface layer 21, the stimulation value of the metallic gloss layer 22 (Y45 °), the area of the dots of the metallic gloss layer 22, the gloss of the metallic gloss layer 22 By adjusting the area ratio of dots, the lightness (L ^* ) of the surface of the base material 24, and the color of the base material 24 (color coordinates (a ^* , b ^* )), in the metal polished surface design of the decorative molded member 20C The degree of diffuse reflection of light, the degree of specular reflection of light, and the degree of light absorption can be independently adjusted to desired values.

  In the present embodiment, the surface roughness of the surface side of the surface layer 21 is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more. By setting Ra (arithmetic mean roughness) to 2 μm or less, sufficient diffuse reflection can be reliably obtained to realize a polished metal surface design. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection for realizing a metal polished surface design can be reliably obtained.

  The surface roughness of the surface side of the surface layer 21 is more preferably Ra 1 μm or less, Rmax 2 μm or less, or Sm 100 μm or more. Thereby, sufficient diffuse reflection for realizing a polished metal surface design can be obtained more reliably.

  In the present embodiment, the stimulation value (Y45 °) in the XYZ color system defined by JIS-Z-8701 of the metallic luster layer 22 is 10,000 or more. By setting the stimulation value (Y45 °) of the metallic luster layer 22 to 10,000 or more, regular reflection or metallic luster sufficient to realize a polished metal surface design can be surely obtained.

  The stimulation value (Y45 °) of the metallic luster layer 22 is more preferably 20000 or more. Thereby, sufficient regular reflection thru | or metallic luster in order to implement | achieve a metal grinding | polishing surface design can be obtained more reliably.

In the present embodiment, the area of the dots in plan view is 10 ⁻³ to 10 ⁵ μm ² . By setting the area of the dot to 10 ⁻³ μm ² or more, the dot does not become too small, and regular reflection by the dot is reliably performed. By setting the dot area to 10 ⁵ μm ² or less, when the area ratio of dots per unit area in a plan view is constant, the number of dots increases. Diffuse reflection by the peripheral edge portion is reliably performed. In addition, the dots do not become too large, and a decrease in the appearance of the film structure 10C is suppressed.

  In the present embodiment, the area ratio of dots per unit area in plan view is 20 to 99%. By setting the area ratio of the dots to 20% or more, the area ratio of the surface of the substrate 24 per unit area in plan view is 80% or less, the light absorption is not excessive, and the decorative molded member 20C is excessive. A decrease in lightness and / or stimulation value is suppressed. By setting the dot area ratio to 99% or less, the area ratio of the surface of the base material 24 per unit area in a plan view is 1% or more, and the metal polished surface design with a texture that is not too strong and shines dull. Sufficient absorbance is reliably achieved to achieve.

  The area ratio of dots of the metallic gloss layer 22 is more preferably 40 to 99%. Thereby, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of the decorative molded member 20C is suppressed further.

In the present embodiment, the CIE1976 lightness (L ^* ) defined by JIS-Z-8729 on the surface of the substrate 24 is 0-80. By setting the lightness (L ^* ) of the base material 24 to 80 or less, it is possible to prevent the gloss from becoming too strong, and to absorb light enough to realize a dazzling and shiny textured metal polished surface design that is bright and dark. Is achieved.

The lightness (L ^* ) of the surface of the substrate 24 is more preferably 0-50. Thereby, sufficient light absorption is achieved more reliably to realize a polished metal surface finish design that is not too strong and shines dull.

Further, the CIE 1976 color coordinates (a ^* , b ^* ) of the base material 24 satisfy the relational expression of 0 <(a ^* ) ² + (b ^* ) ² <6400. When the color coordinates (a ^* , b ^* ) satisfy such a relational expression, a dull shining textured metal-polished surface design that is less affected by the viewing angle and has a unique color tone to the metal-polished surface is realized. Sufficient absorption is achieved. That is, in the decorative molded member 20C as described above composed of a plurality of layers including the base material 24, the color tone of the base material 24 is small when the light receiving angle (the angle at which the decorative molded member 20C is viewed) is small. Is more likely to be reflected, and tends to be easily affected by light interference or the like as the light receiving angle increases. This is one of the factors that change the color tone of the decorative molded member 20C depending on the viewing angle (light receiving angle). . However, by making the color coordinates (a ^* , b ^* ) of the base material 24 satisfy the above relational expression, it is possible to suppress the color tone from changing significantly due to the difference in the light receiving angle, and to obtain a color tone specific to the metal polished surface. Sufficient light absorption is achieved to achieve the dull and shiny textured metal polished surface design.

  Next, still another embodiment of the present invention will be described.

  As shown in FIG. 4A, a decorative molded member 20D according to this embodiment includes a surface layer 31 made of a transparent or translucent resin layer, and a plurality of fine particles formed on the surface side of the surface layer 31. A film structure 10 </ b> D provided with a metallic luster layer 32 having a hole 32 a is formed on the surface side of the base material 34. The surface layer 31 is formed so as to fill the fine holes 32 a of the metallic luster layer 32.

  Further, as shown in FIG. 4B, another decorative molded member 20D according to the present embodiment is formed on the surface layer 31 made of a transparent or translucent resin layer and on the back surface side of the surface layer 31. A film structure 10 </ b> D provided with a metallic luster layer 32 having a plurality of fine holes 32 a is formed on the surface side of the substrate 34. The surface layer 31 is formed so as to fill the fine holes 32 a of the metallic luster layer 32.

  Moreover, as shown in FIG.4 (C), another decoration molding member 20D which concerns on this embodiment is formed in the surface layer 31 which consists of a transparent or translucent resin layer, and the back surface side of the surface layer 31. As shown in FIG. The film structure includes a metallic gloss layer 32 having a plurality of fine holes 32a, and a transparent or translucent filling layer 35 formed on the back side of the surface layer 31 so as to fill the fine holes 32a of the metallic gloss layer 32. The body 10 </ b> D is formed on the surface side of the base material 34.

  Here, the surface layer 31 has a diffuse reflection function, the metallic luster layer 32 has a regular reflection function and a diffuse reflection function, and the surface of the substrate 34 has a light absorption function.

  In addition, since the metallic luster layer 32 has a plurality of fine holes 32a, portions other than the fine holes 32a have shapes such as a mesh shape, a mesh shape, a nettle shape, a spider web shape, and the like.

  In these decorative molded members 20D, the surface of the substrate 34 is observed through the fine holes 32a because the metallic gloss layer 32 has a plurality of fine holes 32a. Therefore, when this decorative molded member 20D is viewed from the surface layer 31 side having the diffuse reflection function, the surface of the base material 34 having the light absorption function is finely scattered in the metallic luster layer 32 having the regular reflection function. Yes.

  With such a configuration, part of the light incident on the decorative molded member 20 </ b> D from the surface layer 31 side is diffusely reflected by the surface roughness of the surface layer 31 and part of the light is absorbed by the surface of the base material 34. In addition, a part of the front surface side 31 or the back side of the metallic luster layer 32 (parts other than the fine holes 32a) is specularly reflected (specular reflection), and a part of the fine holes 32a is diffusely reflected. . A combination of such diffuse reflection, absorption, and regular reflection of light realizes a polished metal surface design that is not too glossy and shines dull, optical properties are close to the polished surface, and the appearance is polished metal A decorative molded member 20D having a surface design is obtained. In particular, when the base material 34 satisfies certain conditions described later, it is possible to suppress a significant difference in color tone depending on the viewing angle, which is sufficient to realize a metal polished surface design having a color tone specific to the metal polished surface. Absorption is achieved, and a decorative molded member 20D having optical properties closer to a polished metal surface is obtained.

  FIG. 4C shows a configuration in which the filler layer 35 is also present on the back side of the metallic gloss layer 32 and a part of the filler layer 35 is disposed in the fine holes 32a of the metallic gloss layer 32. However, the present invention is not limited to this, and the filling layer 35 may not be present on the back side of the metallic gloss layer 32, and the entire filling layer 35 may be disposed in the fine holes 32 a of the metallic gloss layer 32.

In the present embodiment, the surface roughness (Ra, Rmax, Sm) on the surface side of the surface layer 31, the stimulation value (Y45 °) of the metallic gloss layer 32, the area of the fine holes 32a of the metallic gloss layer 32, the metallic gloss layer By adjusting the area ratio of the 32 fine holes 32a, the lightness (L ^* ) of the surface of the base material 34, and the color (color coordinates (a ^* , b ^* )) of the base material 34, the metal polishing of the decorative molded member 20D is performed. In the surface design, the degree of diffuse reflection of light, the degree of regular reflection of light, and the degree of light absorption can be independently adjusted to desired values.

  In the present embodiment, the surface roughness of the surface side of the surface layer 31 is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more. By setting Ra (arithmetic mean roughness) to 2 μm or less, sufficient diffuse reflection can be reliably obtained to realize a polished metal surface design. Even when Rmax (maximum height) is set to 4 μm or less or Sm (average unevenness interval) is set to 50 μm or more, sufficient diffuse reflection for realizing a metal polished surface design can be reliably obtained.

  The surface roughness on the surface side of the surface layer 31 is more preferably Ra 1 μm or less, Rmax 2 μm or less, or Sm 100 μm or more. Thereby, sufficient diffuse reflection for realizing a polished metal surface design can be obtained more reliably.

  In the present embodiment, the stimulation value (Y45 °) in the XYZ color system defined by JIS-Z-8701 of the metallic luster layer 32 is 10,000 or more. By setting the stimulus value (Y45 °) of the metallic luster layer 32 to 10,000 or more, sufficient regular reflection or metallic luster can be surely obtained to realize a polished metal surface design.

  The stimulation value (Y45 °) of the metallic luster layer 32 is more preferably 20000 or more. Thereby, sufficient regular reflection thru | or metallic luster in order to implement | achieve a metal grinding | polishing surface design can be obtained more reliably.

In the present embodiment, the area of the fine hole 32a in a plan view is 10 ⁻³ to 10 ⁵ μm ² . By setting the area of the micropore 32a to 10 ⁻³ μm ² or more, the micropore 32a does not become too small, and light absorption by the surface of the base material 34 exposed through the micropore 32a is reliably achieved. By setting the area of the fine hole 32a to 10 ⁵ μm ² or less, the fine hole 32a does not become too large, and regular reflection by the metallic luster layer 32 (part other than the fine hole 32a) is reliably performed. Further, when the area ratio of the fine holes 32a per unit area in a plan view is constant, the number of the fine holes 32a is increased, so that the peripheral length of the fine holes 32a is increased and the diffusion by the peripheral portion of the fine holes 32a is performed. Reflection is ensured.

  In the present embodiment, the area ratio of the fine holes 32a per unit area in plan view is 1 to 80%. By setting the area ratio of the fine holes 32a to 1% or more, the area ratio of the surface of the base material 34 per unit area in a plan view is 1% or more, and the gloss is not too strong and the surface of the polished metal is dull. Absorption sufficient to realize the design is reliably achieved. By setting the area ratio of the fine holes 32a to 80% or less, the area ratio of the surface of the base material 34 per unit area in a plan view is 80% or less, the light absorption is not excessive, and the decorative molded member 20D Excessive brightness and / or a decrease in stimulation value is suppressed.

  The area ratio of the fine holes 32a of the metallic luster layer 32 is more preferably 1 to 60%. Thereby, light absorption does not become excessive too much and the fall of the excessive brightness and / or irritation | stimulation value of the decorative shaping | molding member 20D is suppressed further.

In the present embodiment, the CIE1976 lightness (L ^* ) defined by JIS-Z-8729 on the surface of the substrate 34 is 0-80. By setting the lightness (L ^* ) of the base material 34 to 80 or less, it is possible to prevent the gloss from becoming too strong, and to absorb light sufficiently to realize a dazzling and shining textured metal polished surface design that is bright and dark. Is achieved.

The lightness (L ^* ) of the surface of the base material 34 is more preferably 0-50. Thereby, sufficient light absorption is achieved more reliably to realize a polished metal surface finish design that is not too strong and shines dull.

Further, the CIE 1976 color coordinates (a ^* , b ^* ) of the base material 34 satisfy the relational expression of 0 <(a ^* ) ² + (b ^* ) ² <6400. When the color coordinates (a ^* , b ^* ) satisfy such a relational expression, a dull shining textured metal-polished surface design that is less affected by the viewing angle and has a unique color tone to the metal-polished surface is realized. Sufficient absorption is achieved. That is, the color tone of the decorative molded member 20D as described above is relatively easily reflected in the color tone of the base material 34 when the light receiving angle (the angle at which the decorative molded member 20D is viewed) is small. Although it tends to be easily affected by light interference and the like as it increases, the color tone (a ^* , b ^* ) of the base material 34 satisfies the above-mentioned relational expression, so that the color tone is different from the difference in the light receiving angle. Sufficient light absorption is achieved to achieve a dull and shiny textured metal polished surface design with a unique color tone to the polished metal surface.

  In the present embodiment, the film structure 10C (10D) can be easily formed by, for example, printing or painting each layer 21, 22, 25 (31, 32, 35) on a base material (not shown) of a transfer film. Can be obtained. Alternatively, it can be easily obtained by printing or painting each layer 22, 25 (32, 35) on the clear film to be the surface layer 21 (31) of the film structure 10C (10D). The obtained film structure 10C (10D) can be easily decorated with a polished metal surface by transferring or bonding the surface of the substrate 24 (34) to the surface of the substrate 24 (34). . Alternatively, the layers 21, 22, and 25 (31, 32, and 35) of the film structure 10C (10D) may be printed or painted directly on the surface of the substrate 24 (34).

  In this manner, a decorative molded member 20C (20D) in which the film structure 10C (10D) is formed on the surface side of the base material 24 (34) is obtained. This decorative molded member 20C (20D) has optical properties close to the metal polished surface and the appearance exhibits a metal polished surface design. The base materials 24 and 34 are preferably resin molded members. This is because the degree of freedom of the shapes of the decorative molded members 20C and 20D whose optical characteristics are close to the polished metal surface and whose appearance exhibits the polished metal surface design can be increased.

  Note that reference numeral 23 in FIG. 3 and reference numeral 33 in FIG. 4 denote backing layers and / or film structures 10C and 10D for pressing the filling layers 25 and 35 against the surface layers 21 and 31, respectively. It is an adhesive layer for adhering to. Further, a protective layer (not shown) for preventing the filling layers 25 and 35 and the metallic gloss layers 22 and 32 from being eroded or corroded by the backing layers (adhesive layers) 23 and 33 is provided as the filling layers 25 and 35 and the metal. It may be provided between the gloss layers 22 and 32 and the backing layers (adhesive layers) 23 and 33. In this case, the backing layers (adhesive layers) 23 and 33 and the protective layer are transparent or translucent so that the surfaces of the base materials 24 and 34 can be observed in a good state via the metallic gloss layers 22 and 32. .

  In the decorative film structures 10A to 10D of the embodiments of FIGS. 1 to 4 described above, the surface layers 1, 11, 21, 31, the light absorption layers 2, 13, and the metallic gloss layers 3, 12, 22 32 and the thicknesses of the filling layers 25 and 35 are not particularly limited. Depending on the situation, the thickness may be in the range of 1 μm to 1 mm, for example.

  The surface layers 1, 11, 21, and 31 may be colorless or colored as long as they are transparent or translucent. By adjusting the colors of the surface layers 1, 11, 21, and 31, the type of metal (for example, aluminum) in the metal polished surface design of the decorative film structures 10 </ b> A to 10 </ b> D can be adjusted to a desired one. .

  The material of the light absorption layers 2 and 13 is not particularly limited. Resins and metals are preferred, but depending on the situation, for example, paper, minerals, other fibrous materials, and other inorganic materials may be used.

  The material of the metallic luster layers 3, 12, 22, and 32 is not particularly limited. For example, resin and metal are preferable. Also by adjusting the color of the metallic luster layers 3, 12, 22, 32, the metal type (for example, aluminum) in the metal polished surface design of the decorative film structures 10A to 10D is adjusted to a desired one. Can do.

  The filling layers 25 and 35 may be colorless or colored as long as they are transparent or translucent. Also by adjusting the colors of the filling layers 25 and 35, the type of metal (for example, aluminum) in the metal polished surface design of the decorative molded members 20C and 20D can be adjusted to a desired one.

  In addition, a transparent or semi-transparent, colorless or colored protective layer on the outer surface of the film structures 10A to 10D or the outer surface of the decorative molded members 20A to 20D, as long as the effects of the present invention are not impaired. May be provided. This protective layer is provided directly on the surface layers 1, 11, 21, 31, for example. This protective layer is provided for protecting the surface of the film structures 10A to 10D or the decorative molded members 20A to 20D. Moreover, this protective layer may be provided in order to adjust the surface roughness (Ra, Rmax, Sm) on the surface side of the surface layers 1, 11, 21, 31. Therefore, the surface roughness (Ra, Rmax, Sm) on the surface side of the surface layers 1, 11, 21, 31 referred to in the present invention is the surface roughness (Ra, Rmax, Sm) adjusted by this protective layer. Is included.

  Each of the decorative molded members 20A to 20D of FIGS. 1 to 4 described above has optical characteristics close to a metal polished surface and an external appearance exhibiting a metal polished surface design. Therefore, for example, an automobile interior such as a door handle. It is suitable for parts, home appliance parts, personal computer parts, mobile phone parts, office parts, sports equipment parts, measuring equipment parts, miscellaneous goods parts, and the like.

  Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples.

[Production of decorative film structure]
(Test numbers 1-6, 8-11)
A decorative film structure 10 having the configuration shown in FIG. 1A was produced according to the specifications shown in Table 1. As the surface layer 1, a polycarbonate sheet “PC1151” (plate thickness: 0.5 mm) manufactured by Teijin Chemicals Ltd. was used, and a light absorption layer 2 (thickness: 3 μm) was formed on one side by screen printing. For the formation of the light absorption layer 2, UV ink “HUG” manufactured by Seiko Advance Co., Ltd. was used. Next, a metallic luster layer 3 (thickness 2 μm: as a thickness on the light absorption layer 2) was formed on the light absorption layer 2 by screen printing. For the formation of the metallic luster layer 3, ink “MIR-51000 Mirror Silver” manufactured by Teikoku Ink Manufacturing Co., Ltd. was used. Next, a backing layer 4 (thickness 10 μm) was formed on the metallic gloss layer 3 by screen printing. For forming the backing layer 4, ink “MIB-611 White” manufactured by Teikoku Ink Manufacturing Co., Ltd. was used. As described above, the decorative film structure 10 </ b> A exhibiting an aluminum polished surface appearance when observed from the surface layer 1 side was obtained.

(Test number 7)
A decorative film structure was produced in the same manner as in test numbers 1 to 6 and 8 to 11 except that the light absorption layer 2 was not formed.

[Appearance evaluation of decorative film structure]
The appearance of the produced decorative film structure 10 was optically evaluated. That is, visible light (wavelength: 420 to 670 nm, spread angle: substantially zero degree) is irradiated from the surface layer 1 side to the decorative film structure 10 at an incident angle of 45 degrees, and the stimulation value Y of the regular reflection angle, that is, regular reflection ( Using a variable angle spectrophotometer made by Murakami Color Research Laboratory, the specular reflection (Y45 °) stimulus value Y with a regular reflection angle of −5 degrees, that is, the diffuse reflection stimulus value (Y40 °). It was measured. The results are shown in Table 1.

  Here, the specular reflection stimulus value (Y45 °) is JIS-Z-8701 where the illumination optical axis angle with respect to the normal direction of the sample surface is −45 ± 2 ° and the light reception / reflection optical axis angle is 45 ± 2 °. The Y value is calculated in accordance with the definition of the tristimulus value of the object color due to reflection in the XYZ color system defined in (1). Further, the diffuse reflection stimulation value (Y40 °) is JIS-Z-8701 with the illumination optical axis angle with respect to the normal direction of the sample surface set to −45 ± 2 ° and the received light reflection optical axis angle set to 40 ± 2 °. The Y value is calculated according to the definition of the tristimulus value of the object color due to reflection in the prescribed XYZ color system.

  In addition, when the stimulation value of specular reflection (Y45 °) and the diffuse reflection stimulation value (Y40 °) of the real aluminum polished surface and the satin plating were measured in the same manner, the specular reflection stimulation value of the aluminum polished surface ( Y45 °) was in the range of 35000-55000 (eg, 38306), and the diffuse reflection stimulus value (Y40 °) was in the range of 900-1300 (eg, 925).

Further, when the decorative film structure 10 is irradiated with visible light at an incident angle of 45 degrees and the light reception angle (light reception reflection optical axis angle) is changed around the regular reflection angle, genuine satin plating and test numbers 2 to CIE1976 color coordinates (b ^* ) of the decorative film structure 10 of 5 were obtained. The result is shown in FIG. The CIE 1976 color coordinates (b ^* ) are set to JIS-Z-8729 by changing the illumination optical axis angle with respect to the normal direction of the sample surface to −45 ± 2 ° and changing the received / reflected optical axis angle at a predetermined angular interval. It was determined according to the definition of color coordinates specified.

  As is clear from Table 1, the test numbers 1 to 6 and 8 to 11 in which the achromatic layer 2 is formed as compared with the decorative film structure of test number 7 in which the light absorption layer 2 is not formed. The decorative film structure 10 had a regular reflection stimulation value (Y45 °) and a diffuse reflection stimulation value (Y40 °) that were relatively close to those of an actual aluminum polished surface or satin plating.

In addition, as shown in FIG. 5, for the decorative film structure 10 of test numbers 3 and 4, the value of the color coordinate (b ^* ) is almost constant regardless of the light receiving angle, and the value is genuine. It was almost the same as the color coordinate (b ^* ) value of the satin plating. That is, it can be considered that the decorative film structure 10 of test numbers 3 and 4 has almost no change in color tone depending on the viewing angle, and is a decorative film structure having a level comparable to real satin plating. . For decorative film structure 10 of the test numbers 2 and 5, the values of the color coordinates of the angle region near to the specular reflection angle (b ^*) values and away from the specular reflection angle angle region and the color coordinate (b ^*) There is a slight difference between this and the actual satin plating, but this is a slight difference on the level of general human consciousness. It can be said that it is a decorative film structure at a level comparable to real satin plating.

  INDUSTRIAL APPLICABILITY The present invention has wide industrial applicability in the technical field of decorative film structures and decorative molded members that can be used for automobile interior parts and the like.

1, 11, 21, 31 Surface layer 2, 13 Light absorbing layer 3, 12, 22, 32 Metallic gloss layer 4, 14 Backing layer (adhesive layer)
5, 15, 24, 34 Substrate 25, 35 Filling layer 10A, 10B, 10C, 10D Decorative film structure 20A, 20B, 20C, 20D Decorative molded member

Claims (15)

A surface layer composed of a transparent or translucent resin layer;
A metallic luster layer formed on the back side of the surface layer;
A light absorbing layer comprising a plurality of fine dots formed on the surface side of the metallic luster layer, or on the surface side of the surface layer;
The light absorption layer has a CIE1976 lightness (L ^* ) defined by JIS-Z-8729 of 0 to 80, and a CIE1976 color coordinate (a ^* , b ^* ) of 0 <(a ^* ) ² + (b ^*) all SANYO to satisfy the ² <6400 of the relationship,
The surface roughness of the surface side of the surface layer is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more,
The area of the fine dots in plan view is 10 ⁻³ to 10 ⁵ μm ² ,
The area ratio of the fine dots per unit area in plan view is 1 to 80%,
JIS-Z-8701 stimulus value in the XYZ color system defined by (Y45 °) is decorative film structure characterized der Rukoto 10,000 of the metallic luster layer. A part of the light incident from the surface layer side is diffusely reflected by the surface roughness of the surface layer and the peripheral edge of the dots of the light absorption layer, and is incident on the back side of the surface layer or the surface side of the surface layer. 2. The decorative film structure according to claim 1, wherein a part of the light absorbing layer is absorbed by a fine dod and a part is regularly reflected by a metallic luster layer on the back side of the surface layer. A surface layer composed of a transparent or translucent resin layer;
A light absorbing layer formed on the back side of the surface layer;
Including a metallic luster layer composed of a plurality of fine dots formed on the surface side of the light absorbing layer, or on the surface side of the surface layer,
The light absorption layer has a CIE1976 lightness (L ^* ) defined by JIS-Z-8729 of 0 to 80, and a CIE1976 color coordinate (a ^* , b ^* ) of 0 <(a ^* ) ² + (b ^*) all SANYO to satisfy the ² <6400 of the relationship,
The surface roughness of the surface side of the surface layer is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more,
The area of the fine dots in plan view is 10 ⁻³ to 10 ⁵ μm ² ,
The area ratio of the fine dots per unit area in plan view is 20 to 99%,
JIS-Z-8701 stimulus value in the XYZ color system defined by (Y45 °) is decorative film structure characterized der Rukoto 10,000 metallic luster layer. A part of the light incident from the surface layer side is diffusely reflected by the surface roughness of the surface layer and the peripheral edge of the dots of the metallic gloss layer, and is partially reflected by the light absorption layer on the back side of the surface layer. 4. The decorative film structure according to claim 3, wherein a portion is absorbed and a part thereof is specularly reflected by the fine dots of the metallic luster layer on the back side of the surface layer or the surface side of the surface layer. The decorative film structure according to any one of claims 1 to 4, wherein a surface roughness of the surface layer of the surface layer is Ra 1 µm or less, Rmax 2 µm or less, or Sm 100 µm or more. The decorative film structure according to any one of claims 1 to 5 , wherein the light absorption layer has a CIE1976 lightness (L ^* ) defined by JIS-Z-8729 of 0 to 50. The decorative film structure according to claim 1 or 2 , wherein an area ratio of dots of the light absorption layer is 1 to 60%. The decorative film structure according to any one of claims 1 to 4 , wherein a stimulation value (Y45 °) in an XYZ color system defined by JIS-Z-8701 of the metallic gloss layer is 20000 or more. The decorative film structure according to claim 3 or 4 , wherein an area ratio of the fine dots of the metallic gloss layer is 40 to 99%.   A decorative molded member, wherein the decorative film structure according to any one of claims 1 to 9 is formed on a surface side of a substrate.   The decorative molded member according to claim 10, wherein the base material is a resin molded member. A film structure comprising a surface layer composed of a transparent or translucent resin layer and a metallic luster layer composed of a plurality of fine dots formed on the surface side of the surface layer and / or the back surface side of the surface layer is a surface. CIE1976 lightness (L ^* ) specified by JIS-Z-8729 is 0 to 80, and CIE1976 color coordinates (a ^* , b ^* ) are 0 <(a ^* ) ² + (b ^* ) ² <6400 of it is provided on the surface side of the formed substrate so as to satisfy the relational expression,
The surface roughness of the surface side of the surface layer is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more,
The area of the fine dots in plan view is 10 ⁻³ to 10 ⁵ μm ² ,
The area ratio of the fine dots per unit area in plan view is 20 to 99%,
Decorative molding member to the stimulus value in the XYZ color system defined in JIS-Z-8701 metallic luster layer (Y45 °), wherein Der Rukoto 10000 or more. The light incident from the surface layer side is partially diffused and reflected by the surface roughness of the surface layer and the peripheral edge of the fine dots of the metallic luster layer, and partly absorbed by the surface of the substrate, The decorative molded member according to claim 12, wherein a part of the decorative layer is specularly reflected by the metallic luster layer on the front surface side and / or the back surface side of the surface layer. A surface layer composed of a transparent or translucent resin layer and a plurality of micropores, and the micropores are filled with the surface layer so that the surface side of the surface layer and / or the back side of the surface layer The film structure comprising the metallic gloss layer formed on the surface has a CIE 1976 lightness (L ^* ) defined by JIS-Z-8729 of the surface of 0 to 80, and CIE 1976 color coordinates (a ^* , b ^* ) , 0 <(a ^* ) ² + (b ^* ) ² <6400, provided on the surface side of the substrate formed to satisfy the relational expression ,
The surface roughness of the surface side of the surface layer is Ra 2 μm or less, Rmax 4 μm or less, or Sm 50 μm or more,
The area of the micropore in plan view is 10 ⁻³ to 10 ⁵ μm ² ,
The area ratio of the micropores per unit area in plan view is 1 to 80%,
Decorative molding member to the stimulus value in the XYZ color system defined in JIS-Z-8701 metallic luster layer (Y45 °), wherein Der Rukoto 10000 or more. The light incident from the surface layer side is partially diffused and reflected by the surface roughness of the surface layer and the peripheral edge of the fine holes of the metallic luster layer, and partly absorbed by the surface of the base material, The decorative molded member according to claim 14, wherein a part is regularly reflected by the metallic luster layer on the front surface side and / or the back surface side of the surface layer.

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