Decorative laminate, decorative molded article, and display device

Abstract

This decorative laminate has light-transmitting properties and comprises: a base material having a first main surface and a second main surface; a light adjustment layer provided to the first main surface side of the base material; an interference pigment printed layer provided to the second main surface side of the base material; and a black translucent printed layer provided to a side of the interference pigment printed layer opposite to the base material. The light adjustment layer has a relief pattern formed to correspond to the shape of a design on the surface opposite to the base material. The interference pigment printed layer has a first light-transmitting section on the main surface of the interference pigment printed layer. The black translucent printed layer has, on the main surface thereof, a second light-transmitting section at a position at least partially overlapping the first light-transmitting section.

Description

Technical Field

[0001] The present invention relates to a decorative laminate, a decorated molded article, and a display device.

Background Art

[0002] On the surface of molded articles such as vehicle interior parts, architectural interior materials, and home appliance casings, a decorative laminate having a design such as a pattern and a picture is provided to harmonize with the surroundings of the molded article. On the back side of the molded article, for example, a light source for displaying images, figures, characters, etc. is provided. When the light source is turned off, the design on the surface of the decorative laminate is displayed, and when the light source is turned on, the light emitted from the light source passes through the molded article and the decorative laminate and is displayed on the surface of the decorative laminate.

[0003] As a decorative laminate used for decorating such molded articles, for example, a decorative sheet is disclosed which includes a base film, a first pattern layer, a second pattern layer, an optical function layer, a transmittance adjustment layer, and an adhesive layer, and which expresses a wood grain pattern when the light source of the display device is turned off and displays an image on the surface of the decorative sheet when the light source is turned on (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Here, the decorative laminate such as the decorative sheet of Patent Document 1 aims to achieve both stealth properties such that the light source disposed on the back side of the molded article cannot be visually recognized from the surface of the decorative laminate when the light source is turned off and light transmissibility such that the light from the light source can pass through when the light source is turned on. For example, in the case of a wood grain pattern, it is desirable to suppress the light transmittance of the decorative laminate to, for example, 20% or less.

[0006] However, when the light transmittance of the decorative laminate is suppressed to, for example, 20% or less, there is a problem that the image displayed on the surface of the decorative laminate tends to become dark. On the other hand, when the light transmittance of the decorative laminate such as the decorative sheet of Patent Document 1 is increased to, for example, 25% or more, the entire surface of the decorative laminate becomes white and the wood grain pattern cannot be seen. Therefore, there is a problem that there is a limit to increasing the brightness of the image displayed on the surface of the decorative laminate while ensuring the stealth property.

[0007] Also, although it is conceivable to increase the brightness of the light source, increasing the brightness of the light source increases the power consumption, which is not desirable.

[0008] One aspect of the present invention is to sufficiently ensure the stealth property so that the light source disposed on the back side of the molded article cannot be visually recognized from the surface of the decorative laminate when the light source is turned off, and without increasing the brightness of the light source when the light source is turned on, the light emitted from the light source can be transmitted and displayed with high brightness, and to provide a decorative laminate capable of increasing the diffusion transmittance and enhancing the visibility during lighting.

Means for Solving the Problems

[0009] One aspect of the decorative laminate according to the present invention is a decorative laminate through which light emitted from a light source passes, having a light-transmissive base material having a first main surface and a second main surface opposite to the first main surface, a light adjustment layer provided on the first main surface side of the base material, a interference pigment printing layer provided on the second main surface side of the base material, containing a plurality of types of interference pigments and an ultraviolet absorber in a binder resin, and representing a visible design, a black semi-transparent printing layer provided on the surface of the interference pigment printing layer opposite to the base material, containing a pigment and an ultraviolet absorber in a binder resin, and comprising the light adjustment layer has uneven portions formed on the surface opposite to the base material so as to correspond to the shape of the design represented by the interference pigment printing layer. The interference pigment printing layer has a first light transmissive portion on the main surface of the interference pigment printing layer through which the light can pass. The black semi-transparent printing layer has a second light transmissive portion on the main surface of the black semi-transparent printing layer at a position that at least partially overlaps with the first light transmissive portion in a plan view, through which the light can pass.

Advantages of the Invention

[0010] One aspect of the decorative laminate according to the present invention ensures sufficient stealth so that a light source disposed on the back side of the molded article cannot be visually recognized from the surface of the decorative laminate when the light source is turned off, and without increasing the brightness of the light source when the light source is turned on, the light emitted from the light source can be transmitted and displayed with high brightness, and the diffusion transmittance can be increased to enhance the visibility when lit.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Modes for Carrying Out the Invention

[0012] Hereinafter, embodiments of the present invention will be described in detail. For ease of understanding the description, the same reference numerals are assigned to the same components in each drawing, and redundant descriptions are omitted. Also, the scales of the respective members in the drawings may be different from the actual ones. In this specification, "~" indicating a numerical range means including the numerical values described before and after it as the lower limit value and the upper limit value, unless otherwise specified.

[0013] In this specification, the terms "layer", "sheet", and "film" only differ in name and are not distinguished from each other. For example, the term "sheet" includes members that may be called a layer or a film.

[0014] <Decorative laminate> A decorative laminate according to an embodiment of the present invention (hereinafter simply referred to as "laminate") will be described. FIG. 1 is a diagram showing an example of the plan view of the laminate according to the embodiment of the present invention, FIG. 2 is a partial enlarged view of FIG. 1, and FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2, which is a cross-sectional view schematically showing an example of the configuration of the laminate according to the present embodiment. As shown in FIGS. 1 and 2, the laminate 1A according to the present embodiment has a design consisting of a grain pattern with a plurality of grains formed vertically on the surface.

[0015] In the present embodiment, the case where the design of the laminate 1A is a grain pattern will be described, but the design is not limited to the grain pattern and may be any pattern such as a marble pattern, a geometric pattern, a carbon pattern, stripes, polka dots, and a single color, or may be a figure, a character, or the like.

[0016] As shown in FIG. 3, the laminate 1A includes a light adjustment layer 10, a transparent base material layer 20 as a base material, an interference pigment printing layer 30, a smoke layer 40 which is a black semi-transparent printing layer, and a black layer 50 which is a black symbol printing layer, laminated in this order. The laminate 1A is irradiated with light emitted from a light source 2 which is a light emitting part from the back surface side of the laminate 1A (the lower side of the black layer 50 in FIG. 3), passes through the laminate 1A, and is emitted to the front surface side of the laminate 1A (the upper side of the light adjustment layer 10 in FIG. 3). Note that the laminate 1A may not include the black layer 50.

[0017] For example, when the laminate 1A is used as a decorative panel, it is obtained by forming a binder for bonding with a molding resin on the surface exposed outside the smoke layer 40 or the black layer 50 of the sheet material shown in FIG. 3 and performing sheet insert molding to form a panel.

[0018] In this specification, for convenience of explanation, the light adjustment layer 10 side of the laminate 1A is regarded as the front surface, and the black layer 50 side is regarded as the back surface. In the following description, for convenience of explanation, the front surface side may be referred to as the upper side and the back surface side may be referred to as the lower side, but this does not represent a universal up and down relationship.

[0019] The laminate 1A is provided with a light adjustment layer 10 having an uneven shape on its front surface side, and high light-transmitting portions are provided in the interference pigment printing layer 30 and the smoke layer 40 disposed below the light adjustment layer 10. Thereby, the laminate 1A expresses a shape matching the design of the interference pigment printing layer 30 on the surface of the light adjustment layer 10, imparts a tactile sensation, scatters visible light entering from the outside, and makes the portion with high light transmissivity (translucency) not conspicuous visually. Further, the laminate 1A can increase the light transmittance as a whole to, for example, 30% to 40%. Therefore, the laminate 1A can achieve both the stealth property that the light source 2 and the portion without the smoke layer 40 or the black layer 50 disposed on the back surface side of the laminate 1A cannot be visually recognized when the light source 2 is turned off, and the light transmittance that allows the light from the light source 2 to pass through when the light is on. Thus, an image can be displayed on the surface of the laminate 1A with a high overall brightness without increasing the brightness of the light source 2 when the light is on.

[0020] Note that having light transmissivity means having such a degree of transmissivity that light from the light source 2 can pass through when the laminate 1A is irradiated with light from the light source 2 disposed on the back surface side of the laminate 1A, and means being transparent or translucent. Transparent includes colorless transparent or colored transparent.

[0021] The light source 2 is not particularly limited, and examples thereof include an incandescent bulb, a fluorescent lamp, an LED matrix display, an organic EL display, a light-emitting diode (LED), and a liquid crystal display (LCD). Further, natural light may be used as the light source 2.

[0022] (Light adjustment layer) The light adjustment layer 10 may be provided on the entire upper surface 201 which is the first main surface of the transparent base material layer 20, or may be provided partially. From the viewpoint of preferably protecting the surface of the laminate 1A, the light adjustment layer 10 is preferably provided on the entire surface on the main surface side.

[0023] The light adjustment layer 10 has a function of protecting the surface of the laminate 1A from chemicals such as UV cream, has a hard coat function with high hardness and high scratch resistance, and may also have an antireflection function, an ultraviolet shielding function, an infrared shielding function, an antifogging function, an antifouling function, an antiglare function, etc.

[0024] The light adjustment layer 10 is usually transparent or translucent, but may be colored or may contain a matting agent such as silica as long as the design of the interference pigment printing layer 30 can be visually recognized when the laminate 1A is observed from the light adjustment layer 10 side during lighting of the light source 2.

[0025] The colorant is not particularly limited, and examples thereof include inorganic pigments such as carbon black (ink), iron black, titanium white, antimony white, lead yellow, titanium yellow, rose pink, cadmium red, ultramarine, cobalt blue; organic pigments or dyes such as quinacridone red, isoindolinone yellow, phthalocyanine blue; metal pigments composed of flaky foil pieces such as aluminum and brass; pearl pigments composed of flaky foil pieces such as titanium dioxide-coated mica and basic lead carbonate.

[0026] The material constituting the light adjustment layer 10 is not particularly limited, and examples thereof include thermoplastic resins, thermosetting resins such as acrylic and urethane resins, and ionizing radiation curable resins. Among these, from the viewpoint of improving scratch resistance and the like, the light adjustment layer 10 is preferably composed of an ionizing radiation curable resin composition. However, the ionizing radiation curable resin composition is preferably in an uncured state before curing so that it can follow the shape of the final product (e.g., a curved surface or a three-dimensional shape) when adapted to the shape of the final product by insert molding, forming, etc.

[0027] The ionizing radiation curable resin used for forming the light adjustment layer 10 is a resin that crosslinks and cures by irradiating ionizing radiation. Specifically, it is a mixture of at least one of prepolymers, monomers, oligomers, etc. having a polymerizable unsaturated bond or an epoxy group in the molecule. Here, the ionizing radiation means an electromagnetic wave or a charged particle beam having an energy quantum capable of polymerizing or crosslinking molecules, and usually ultraviolet rays (UV) or electron beams (EB) are used, but other electromagnetic waves such as X-rays and γ-rays, and charged particle beams such as α-rays and ion beams are also included. Among the ionizing radiation curable resins, electron beam curable resins are preferably used in the formation of the light adjustment layer 10 because they can be solvent-free, do not require a photoinitiator for polymerization, and stable curing characteristics can be obtained.

[0028] As the monomer used as the ionizing radiation curable resin, a (meth)acrylate monomer having a radical polymerizable unsaturated group in the molecule is suitable, and among them, a polyfunctional (meth)acrylate monomer is preferred. The polyfunctional (meth)acrylate monomer may be a general polyfunctional (meth)acrylate monomer, and may be a (meth)acrylate monomer having two or more (difunctional or more), preferably three or more (trifunctional or more) polymerizable unsaturated bonds in the molecule. The polyfunctional (meth)acrylate may be used alone or in combination of two or more.

[0029] As an oligomer used as a radiation-curable resin, a (meth)acrylate oligomer having a radically polymerizable unsaturated group in the molecule is preferable, and among them, a polyfunctional (meth)acrylate oligomer having two or more polymerizable unsaturated bonds (bifunctional or higher) in the molecule is more preferable. Examples of the polyfunctional (meth)acrylate oligomer include polycarbonate (meth)acrylate, urethane (meth)acrylate, epoxy (meth)acrylate, polyester (meth)acrylate, and the like. The polyfunctional (meth)acrylate oligomer may be used alone or in combination of two or more kinds.

[0030] Among the above-described radiation-curable resins, from the viewpoint of further improving the design feeling by appearance, abrasion resistance, and moldability, it is preferable to use polycarbonate (meth)acrylate. Further, it is also preferable to use a combination of polycarbonate (meth)acrylate and urethane (meth)acrylate.

[0031] The light adjustment layer 10 may be blended with various additives according to desired physical properties. Examples of the additives include weather resistance improvers such as ultraviolet absorbers and light stabilizers, abrasion resistance improvers, polymerization inhibitors, crosslinking agents, infrared absorbers, antistatic agents, adhesion improvers, leveling agents, thixotropy imparting agents, coupling agents, plasticizers, defoaming agents, fillers, solvents, colorants, and the like. These additives can be appropriately selected and used. As the ultraviolet absorber and the light stabilizer, a reactive ultraviolet absorber and a light stabilizer having a polymerizable group such as a (meth)acryloyl group in the molecule may be used.

[0032] The light adjustment layer 10 has irregularities 11 having an irregular shape on its surface 101. The irregularities 11 are formed so as to correspond to the shape of the design represented by the interference pigment printing layer 30. That is, the recesses 111 constituting the irregularities 11 are formed corresponding to the shape of the design of the interference pigment printing layer 30. Note that the correspondence includes not only the case where the recesses of the irregularities 11 coincide with the contour of the design represented by the interference pigment printing layer 30, but also the case where they substantially coincide with the contour of the design. The case of substantially coinciding includes the case of matching to some extent.

[0033] By having the uneven portion 11, the light adjustment layer 10 provides a tactile sensation of the design. Further, the uneven portion 11 scatters visible light incident from the outside of the laminate 1A, so that when the light source 2 is turned off, the first light transmission portion 33 of the interference pigment printing layer 30, the second light transmission portion 41 of the smoke layer 40, and the opening 51 of the black layer 50 cannot be visually conspicuous.

[0034] Also, the light adjustment layer 10 may be composed of two or more layers. For example, the light adjustment layer 10 may be configured by providing one or more layers having a tactile function composed of convex portions of the uneven portion 11 on a layer having surface protection performance such as flat surface scratch resistance.

[0035] The thickness of the light adjustment layer 10 is not particularly limited, but is preferably 0.1 μm to 2000 μm from the viewpoint of imparting surface protection performance such as scratch resistance and durability of the surface 101. Since the light adjustment layer 10 has the uneven portion 11, the thickness of the light adjustment layer 10 is the thickness at the position of the convex portion of the uneven portion 11.

[0036] The method for forming the light adjustment layer 10 is not particularly limited, and can be appropriately formed by any method. For example, an ionizing radiation curable resin composition is prepared, and the prepared ionizing radiation curable resin composition is applied to the coating surface to form an uncured resin layer.

[0037] The viscosity of the ionizing radiation curable resin composition may be a viscosity capable of forming an uncured resin layer by the coating method described later.

[0038] As the coating method of the prepared ionizing radiation curable resin composition, ordinary coating methods such as roll coating, screen coating, gravure coating, spin coating, reverse coating, kiss coating, bar coating, blade coating, flow coating, air knife coating, dip coating, spray coating, etc., transfer coating methods, and general coating methods such as a method of dropping a small amount of the ionizing radiation curable resin composition onto the transparent base material layer 20 and spreading it with a doctor blade can be used. By these coating methods, the ionizing radiation curable resin composition can be coated substantially uniformly on the transparent base material layer 20.

[0039] Next, an uncured resin layer composed of the convex portions of the uneven portions 11 and having a touch feeling function is applied to the formed uncured resin layer and heat-dried, thereby forming an uncured resin layer having an uneven shape, that is, the light adjustment layer 10.

[0040] The light adjustment layer 10 can be fitted to the shape of the final product by insert molding, forming, etc., and after following the shape of the final product (for example, a curved surface or a three-dimensional shape), the uncured resin layer can be cured by irradiating ionizing radiation such as electron beams or ultraviolet rays.

[0041] When using an electron beam as the ionizing radiation, the acceleration voltage can be appropriately selected according to the type of resin used, the thickness of the layer, etc. For example, the acceleration voltage may be 70 kV to 300 kV.

[0042] In addition, in the irradiation of the electron beam, since the higher the acceleration voltage, the higher the transmission ability, when using a resin that is likely to be deteriorated by electron beam irradiation under the light adjustment layer 10, the acceleration voltage is selected so that the transmission depth of the electron beam is substantially equal to the thickness of the light adjustment layer 10. Thereby, the irradiation of the extra electron beam to the layer located under the light adjustment layer 10 can be suppressed, and the deterioration of each layer due to the excessive electron beam can be minimized. Also, the irradiation dose is appropriately selected, and an amount that saturates the crosslinking density of the light adjustment layer 10 is preferable.

[0043] There is no particular limitation on the electron beam source. For example, various electron beam accelerators such as a Cockcroft-Walton type, a Van de Graaff type, a resonant transformer type, an insulated core transformer type, a linear type, a Dynamitron type, and a high-frequency type can be used.

[0044] When using ultraviolet rays as the ionizing radiation, light rays including ultraviolet rays with a wavelength of 190 nm to 380 nm may be radiated. The ultraviolet ray source is not particularly limited, and examples include a high-pressure mercury lamp, a low-pressure mercury lamp, a metal halide lamp, and a carbon arc lamp.

[0045] (Transparent substrate layer) As shown in FIG. 3, the transparent base material layer 20 is provided on the lower surface 102 of the light adjustment layer 10. The transparent base material layer 20 has functions of light transmissibility, chemical resistance of the interference pigment printing layer 30, and scratch resistance of the colored coating film. Thereby, when the light source 2 is disposed on the back side of the laminate 1A, the transparent base material layer 20 can transmit the light irradiated from the light source 2 and can more appropriately protect the design of the interference pigment printing layer 30.

[0046] The transparent base material layer 20 has light transmissibility, but may be colored as long as the design based on the interference pigment printing layer 30 can be visually recognized when the light source 2 is lit when the laminate 1A is observed from the front side. The transparent base material layer 20 may contain a matting agent such as silica or a coloring agent. As the coloring agent, the coloring agents exemplified in the above-described light adjustment layer 10 can be used.

[0047] The transparent base material layer 20 is not particularly limited as long as it is suitable for two-dimensional and three-dimensional molding of the laminate 1A, has light transmissibility, and can appropriately protect the interference pigment printing layer 30 and the smoke layer 40. As the material used for the transparent base material layer 20, for example, a resin having light transmissibility, an elastomer having light transmissibility, glass, or the like can be used.

[0048] Examples of the resin having light transmissivity include, for example, polyester resins; polyethylene terephthalate (PET) resins; acrylic resins; polyolefin resins such as polypropylene and polyethylene; polycarbonate resins; vinyl chloride resins; polybutylene terephthalate (PBT) resins, triacetyl cellulose resins, styrene resins, acrylonitrile-butadiene-styrene (ABS) resins, bioengineering plastics, and biodegradable plastics. These may be used alone or in combination of two or more. The transparent base material layer 20 may be formed by compounding two or more of the above-mentioned resins having light transmissivity. For example, it is preferably a composite layer obtained by compounding an acrylic resin, a bioengineering plastic or a biodegradable plastic with an acrylic resin. The transparent base material layer 20 may be formed by laminating two or more layers of the above-mentioned resins having light transmissivity. For example, it may be a laminate including a layer made of an acrylic resin and a layer made of an ABS resin, or a laminate including a layer made of an acrylic resin and a layer made of a polycarbonate resin.

[0049] As the elastomer having light transmissivity, for example, a thermoplastic elastomer (TPE) can be used. Examples of the thermoplastic elastomer include amide-based TPE (TPA), ester-based TPE (TPC), olefin-based TPE (TPO), styrene-based TPE (TPS), and urethane-based TPE (TPU).

[0050] The transparent base material layer 20 may be formed by laminating a resin layer having light transmissivity and a layer made of an elastomer having light transmissivity.

[0051] The thickness of the transparent base material layer 20 is not particularly limited, but from the viewpoint of having light transmissivity, it is preferably, for example, 50 μm to 1300 μm.

[0052] In order to improve the adhesion with the adjacent layer, the transparent base material layer 20 may be subjected to physical or chemical surface treatment such as oxidation method and roughening method on at least one of the upper surface 201 and the lower surface 202 which is the second main surface, as necessary. Examples of the oxidation method include excimer UV treatment method, corona discharge treatment method, plasma treatment method, chromium oxidation treatment method, flame treatment method, hot air treatment method, and ozone ultraviolet treatment method. Examples of the roughening method include sandblasting method and solvent treatment method. These surface treatment methods are appropriately selected according to the type of resin constituting the transparent base material layer 20, and preferably include excimer UV treatment method and corona discharge treatment method from the viewpoints of effect and operability.

[0053] (Interference pigment printing layer) As shown in FIG. 3, the interference pigment printing layer 30 is provided on the lower surface 202 of the transparent base material layer 20. The interference pigment printing layer 30 is a printing layer made by blending interference pigments that express four colors of red, green, blue, and silver. Note that the interference pigments to be blended are not limited to four colors, and may be any two or three colors of red, green, blue, and silver, or five or more colors including colors other than red, green, blue, and silver, such as white.

[0054] The interference pigment printing layer 30 includes particulate interference pigments 31 of four colors of red, green, blue, and silver, a binder resin 32, and contains an ultraviolet absorber as an additive. The interference pigment printing layer 30 can be formed using an ink composition obtained by additive color mixing of the particles of the interference pigments 31 of four colors of red, green, blue, and silver.

[0055] The interference pigments 31 include a red interference pigment 31R that emits red interference light, a green interference pigment 31G that emits green interference light, a blue interference pigment 31B that emits blue interference light, and a silver interference pigment 31S that emits silver interference light.

[0056] The interference pigment printing layer 30 includes one or more types of interference pigment printing layers 30-N (N is an integer of 1 or more) according to the types of the interference pigments 31R, 31G, 31B, and 31S and the color mixture expressed by the respective contents of the interference pigments 31R, 31G, 31B, and 31S. In the present embodiment, it includes a first interference pigment printing layer 30-1, a second interference pigment printing layer 30-2, and a third interference pigment printing layer 30-3.

[0057] Each of the first interference pigment printing layer 30-1, the second interference pigment printing layer 30-2, and the third interference pigment printing layer 30-3 contains four types of interference pigments 31 that emit interference light of four colors (red, green, blue, and silver) together with an ultraviolet absorber in a binder resin 32. In the present embodiment, in the first interference pigment printing layer 30-1, the light amounts of the interference light of the four types of interference pigments 31 are additively mixed at a predetermined ratio, thereby expressing "dark brown" of the wood grain pattern as the first color mixture. In the second interference pigment printing layer 30-2, the light amounts of the interference light of the four types of interference pigments 31 are additively mixed at a predetermined ratio, thereby expressing "light brown" of the wood grain pattern as the second color mixture. In the third interference pigment printing layer 30-3, the light amounts of the interference light of the four types of interference pigments 31 are additively mixed at a predetermined ratio, thereby expressing "brown" of the wood grain pattern as the third color mixture.

[0058] Note that the three color mixtures (the first color mixture, the second color mixture, and the third color mixture) are formed by laminating rather than being formed on the same surface as the first interference pigment printing layer 30-1, the second interference pigment printing layer 30-2, and the third interference pigment printing layer 30-3 as shown in FIG. 3. However, in the present embodiment, for convenience of explanation, it is described as if the first interference pigment printing layer 30-1, the second interference pigment printing layer 30-2, and the third interference pigment printing layer 30-3 are formed on the same surface as shown in FIG. 3. Also, at least one or more of the first interference pigment printing layer 30-1, the second interference pigment printing layer 30-2, and the third interference pigment printing layer 30-3 may be configured by laminating a plurality of them.

[0059] The dark brown color expressed in the first interference pigment printing layer 30-1, the light brown color expressed in the second interference pigment printing layer 30-2, and the dark brown color expressed in the third interference pigment printing layer 30-3 can be expressed by adjusting the respective blending ratios of the interference pigments 31R, 31G, 31B, and 31S.

[0060] The four-color interference pigments 31R, 31G, 31B, and 31S contained in the first interference pigment printing layer 30-1 and the second interference pigment printing layer 30-2 may each be of the same type or different types.

[0061] When the four-color interference pigments 31R, 31G, 31B, and 31S contained in the first interference pigment printing layer 30-1 and the second interference pigment printing layer 30-2 are of different types, even if the interference pigment 31 emits interference light of the same color (for example, red), the frequency of the interference light may be shifted, and the interference pigment 31 may be a pigment that emits the same color (for example, red) or a different color (for example, blue).

[0062] As shown in FIG. 2, the first interference pigment printing layer 30-1 and the second interference pigment printing layer 30-2 have different planar shapes. When the first interference pigment printing layer 30-1 and the second interference pigment printing layer 30-2 are combined, a wood grain pattern design as shown in FIG. 1 is represented on the surface of the interference pigment printing layer 30.

[0063] FIG. 4 is a diagram schematically showing an example of the cross-sectional structure of the interference pigment 31. As shown in FIG. 4, the interference pigment 31 has a core portion 311 and a thin shell portion 312 that covers the core portion 311. The core portion 311 and the shell portion 312 transmit any visible light depending on the wavelength. The core portion 311 and the shell portion 312 are made of materials having different refractive indices. For example, the core portion 311 is formed of a material having a refractive index smaller than that of the shell portion 312.

[0064] When incident light IL1 having a predetermined wavelength and incident light IL2 having a wavelength different from that of the incident light IL1 are incident on the shell portion 312 of the interference pigment 31, the incident light IL1 is reflected on the surface of the shell portion 312 to become reflected light RL1, and the light IL2 travels through the shell portion 312 and is reflected by the core portion 311 to become reflected light RL2. The reflected light RL1 and the reflected light RL2 interfere with each other and reinforce each other, so that interference light of a specific wavelength is strongly visible. For example, if the wavelength that is enhanced by interference is adjusted to be the wavelength of a specific color (for example, red) by adjusting the thickness of the shell portion 312 or the like, an interference pigment of a specific color (for example, red) can be obtained.

[0065] When the light L1 of the light source 2 is incident on the interference pigment 31, the light L1 is incident on the interference pigment 31, passes through the interference pigment 31, and exits as transmitted light TL1 from the opposite side of the interference pigment 31. Therefore, even if the laminate 1A includes the first interference pigment printing layer 30-1, the second interference pigment printing layer 30-2, and the third interference pigment printing layer 30-3, the light from the light source 2 can be visually recognized from the side of the surface 101 of the laminate 1A.

[0066] Further, the laminate 1A includes a light adjustment layer 10 at a position closer to the surface of the laminate 1A than the first interference pigment printing layer 30-1, the second interference pigment printing layer 30-2, and the third interference pigment printing layer 30-3. The light adjustment layer 10 has the reflection characteristics of the light incident on the surface 101 of the light adjustment layer 10 as an optical function. That is, by having the reflection characteristics of the light incident on the surface 101, the light adjustment layer 10 can have reflection characteristics that increase at least one of the ratio of the amount of visible light reflected on the surface 101 and visually recognized on the surface side of the laminate 1A to the amount of visible light representing the design (wood grain pattern) of the first interference pigment printing layer 30-1, the second interference pigment printing layer 30-2, and the third interference pigment printing layer 30-3 and the amount of light of the light from the light source 2.

[0067] Note that the amount of visible light representing the design is the amount of visible light representing the design combined with the planar shapes of the first interference pigment printing layer 30-1, the second interference pigment printing layer 30-2, and the third interference pigment printing layer 30-3. The amount of light of the light source 2 is the amount of transmitted light of the light that has passed through the first interference pigment printing layer 30-1, the second interference pigment printing layer 30-2, and the third interference pigment printing layer 30-3.

[0068] The ultraviolet absorber contained as an additive in the interference pigment printing layer 30 has an absorption wavelength in the ultraviolet region. Specifically, it has a maximum absorption wavelength in the region of a wavelength of 315 nm to 400 nm or less. Since the interference pigment printing layer 30 contains the ultraviolet absorber, the interference pigment printing layer 30 can be formed by processing with a UV laser.

[0069] As the ultraviolet absorber, for example, benzotriazole-based, benzophenone-based, triazine-based, benzoate-based, etc. can be used. These may be used alone or in combination of two or more.

[0070] Examples of the benzotriazole-based ultraviolet absorber include benzotriazole compounds such as 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-di-t-butylphenyl)benzotriazole, 2-(2'-hydroxy-3'-t-butyl-5'-methylphenyl)benzotriazole, 2-(3,5-di-t-pentyl-2-hydroxyphenyl)-2-benzotriazole, 2-(2-benzotriazol-2-yl)-4-methyl-6-(3,4,5,6-tetrahydrophthalimidylmethyl)phenol, 2-(2-hydroxy-4-octyloxyphenyl)-2-benzotriazole, and 2-(2-hydroxy-5-t-octylphenyl)-2-benzotriazole.

[0071] Examples of the benzophenone-based ultraviolet absorber include benzophenone compounds such as 2-hydroxy-4-n-octyloxy-benzophenone, 2-hydroxy-4-dodecyloxy-benzophenone, 2-hydroxy-4-octadecyloxy-benzophenone, 2-hydroxy-4-benzyloxy-benzophenone, and 1,4-bis(4-benzoyl-3-hydroxyphenoxy)-butane.

[0072] Examples of triazine-based ultraviolet absorbers include hydroxyphenyltriazine compounds such as 2,4-bis[2-hydroxy-4-butoxyphenyl]-6-(2,4-dibutoxyphenyl)-1,3,5-triazine, 2,4-diphenyl-6-(2-hydroxy-4-methoxyphenyl)-1,3,5-triazine, 2,4-diphenyl-6-(2-hydroxy-4-ethoxyphenyl)-1,3,5-triazine, 2,4-diphenyl-(2-hydroxy-4-propoxyphenyl)-1,3,5-triazine, 2,4-diphenyl-(2-hydroxy-4-butoxyphenyl)-1,3,5-triazine, 2,4-diphenyl-6-(2-hydroxy-4-butoxyphenyl)-1,3,5-triazine, 2-(2-hydroxy-4-[1-octyloxycarbonylethoxy]phenyl)-4,6-bis(4-phenylphenyl)-1,3,5-triazine, 2,4-diphenyl-6-(2-hydroxy-4-hexyloxyphenyl)-1,3,5-triazine, 2,4-diphenyl-6-(2-hydroxy-4-octyloxyphenyl)-1,3,5-triazine, 2,4-diphenyl-6-(2-hydroxy-4-dodecyloxyphenyl)-1,3,5-triazine, and 2,4-diphenyl-6-(2-hydroxy-4-benzyloxyphenyl)-1,3,5-triazine.

[0073] Examples of benzoate-based ultraviolet absorbers include benzoate compounds such as 2,4-di-t-butylphenyl-3,5-di-t-butyl-4-hydroxybenzoate and hexadecyl-3,5-di-t-butyl-4-hydroxybenzoate.

[0074] The binder resin 32 has a function of fixing the interference pigment 31 inside to the transparent base material layer 20 and has light transparency. As the binder resin, for example, a polyisocyanate resin, a resin having light transparency of the transparent base material layer 20, or the like can be used.

[0075] The interference pigment printing layer 30 has a first light transmission portion 33 having light transparency. The first light transmission portion 33 is an area that does not contain the interference pigment 31 and is not printed.

[0076] The first light transmission part 33 can be formed by a coating film removal part 331 which is a through hole provided in the interference pigment printing layer 30. The coating film removal part 331 may contain a cured product of a light-transmissive filling resin composition. When the coating film removal part 331 contains a cured product of a light-transmissive filling resin composition, for example, when a binder layer is provided between a molded article 110 (Fig. 6) described later and the laminate 1A, the light-transmissive filling resin composition can be used also as the resin constituting the binder layer.

[0077] The filling resin composition contained in the coating film removal part 331 contains, for example, a transparent resin such as an acrylic resin, a urethane resin, a polyester resin, a polyvinyl acetate resin, a vinyl chloride resin, and a vinyl chloride-vinyl acetate copolymer as a main material, and may contain an additive for improving adhesion force or the like as an auxiliary material. Here, the main material means a material occupying more than half of the mass of the entire filling resin composition.

[0078] As the filling resin composition, a general binder resin can be used. For example, when a binder layer is provided between a molded article 110 (Fig. 6) described later and the laminate 1A, the binder resin constituting the binder layer can be used.

[0079] In plan view, the first light transmission part 33 may be formed in an appropriate arbitrary shape such as a polygon such as a circle, an ellipse, or a quadrangle. Since the interference pigment printing layer 30 has high light transmissivity in the first light transmission part 33, when the light source 2 is lit, the first light transmission part 33 can increase the light transmittance to 70% to 98% of the transmittance of a cured product of a filling resin composition such as a binder layer (not shown). Also, when the light source 2 is turned off, the influence on the design visually recognized from the surface of the laminate 1A can be reduced.

[0080] The first light transmission part 33 may be arranged in an appropriate arbitrary arrangement such as a hexagonal lattice (also referred to as a regular triangular lattice or a staggered lattice), a square lattice, a rhombic lattice, a line shape, etc. on the main surface 301.

[0081] The first light transmission part 33 may be arranged substantially evenly at a predetermined interval on the main surface 301 in a plan view, or may be arranged irregularly. From the viewpoint of giving the first light transmission part 33 uniform light transmissivity, it is preferable that the first light transmission part 33 is arranged evenly at a predetermined interval on the main surface 301.

[0082] The ratio of the first light transmission part 33 is preferably 0.1% to 35%, more preferably 0.5% to 18%, and even more preferably 1.0% to 15% in a plan view of the interference pigment printing layer 30. If the ratio of the first light transmission part 33 is within the above preferable range, the interference pigment printing layer 30 can achieve both stealth properties and high light transmissivity.

[0083] After the formation of the first interference pigment printing layer 30-1, the second interference pigment printing layer 30-2, and the third interference pigment printing layer 30-3, the first light transmission part 33 forms a coating film removal part 331 by laser processing or the like, and a filling resin composition containing a main agent and an auxiliary material, such as a binder resin having permeability, is applied to the coating film removal part 331 by a general coating method and dried, or a permeable filling resin composition melted by heat is applied by a general coating method and solidified, or a molding resin having light transmissivity is injection molded. The first light transmission part 33 can be formed by filling a filling resin composition having light transmissivity.

[0084] As the coating method of the filling resin composition, for example, ordinary coating methods such as roll coating, screen coating, gravure coating, spin coating, reverse coating, kiss coating, bar coating, blade coating, flow coating, air knife coating, dip coating, and spray coating can be used.

[0085] Note that the interference pigment printing layer 30 may be, for example, a metal thin film layer in which metal is formed so as to transmit light. The metal thin film layer is formed, for example, by vapor-depositing metal.

[0086] (Smoke layer) The smoke layer 40 is provided on the lower surface 302 of the interference pigment printing layer 30. The smoke layer 40 has a light transmittance within a predetermined range (for example, only in the smoke layer 40, it is 1% - 70%, preferably 1% - 47%) in a single layer. When the light source 2 is turned off, the smoke layer 40 makes the design of the interference pigment printing layer 30 more visible, enhancing the visibility and distinctiveness of the design and improving the display quality. When the light is on, it has the function of having a light transmittance within a predetermined range (30% - 50%) throughout the laminate 1A including the coating film removal portion 331. Also, the smoke layer 40 has the function of making the boundary between the opening 51 and the light-shielding portion 52 of the black layer 50 less visible.

[0087] The smoke layer 40 can be formed, for example, by printing an ink composition containing a pigment or dye of a light-reducing color (for example, black) and an ultraviolet absorber in a transparent binder resin. As the smoke layer 40, for example, a layer formed by printing a black ink composition can be used. The smoke layer 40 may also be, for example, a metal thin film layer formed such that light can pass through. The metal thin film layer is formed, for example, by vapor-depositing a metal.

[0088] Similar to the interference pigment printing layer 30, the smoke layer 40 has a second light-transmitting portion 41 having light-transmitting properties. The second light-transmitting portion 41 is an area that does not contain interference pigments 31 and is not printed, similar to the first light-transmitting portion 33.

[0089] The second light-transmitting portion 41 is arranged at a position where at least a part of it overlaps with the first light-transmitting portion 33 in a plan view of the main surface of the smoke layer 40. Preferably, the second light-transmitting portion 41 is arranged at a position substantially the same as the first light-transmitting portion 33 on the main surface of the smoke layer 40 in a plan view. Note that the substantially same position includes the same position or a position that is slightly displaced but can be regarded as the same position.

[0090] Similar to the interference pigment printing layer 30, the second light transmission portion 41 can be formed by the coating removal portion 411 of the smoke layer 40, and preferably includes a cured product of a light-transmissive filling resin composition in the coating removal portion 411. As the light-transmissive filling resin composition contained in the second light transmission portion 41, the transparent filling resin composition filled in the coating removal portion 331 can be used.

[0091] Note that the transparent filling resin composition may be contained only in the coating removal portion 331 of the interference pigment printing layer 30 or the coating removal portion 411 of the smoke layer 40, or may be contained only in a part of the coating removal portions 331 and 411.

[0092] The shape and arrangement of the second light transmission portion 41 may be the same as or different from the shape and arrangement of the first light transmission portion 33. From the viewpoint of facilitating the passage of the light of the light source 2 through the interference pigment printing layer 30 and the smoke layer 40, it is preferable that the shape and arrangement of the second light transmission portion 41 be the same as the shape and arrangement of the first light transmission portion 33.

[0093] The second light transmission portion 41 can be formed by a method such as laser processing in the same manner as the first light transmission portion 33.

[0094] Preferably, the ratio of the second light transmission portion 41 is the same as that of the first light transmission portion 33.

[0095] When the second light transmission portion 41 is at the same or substantially the same position as the first light transmission portion 33 in the plan view of the interference pigment printing layer 30, the ratios of the first light transmission portion 33 and the second light transmission portion 41 are preferably 0.1% to 20%, more preferably 0.5% to 18%, and even more preferably 1.0% to 15% in the plan view of the interference pigment printing layer 30 or the smoke layer 40, which is the same as the ratio of the first light transmission portion 33.

[0096] The light transmittance of the laminated portion of the interference pigment printing layer 30 and the smoke layer 40, that is, the light transmittance of the laminated portion of the interference pigment printing layer 30 and the smoke layer 40 having the first light transmission portion 33 and the second light transmission portion 41, is preferably 23% to 51%, and more preferably 33% to 41%. For example, the light transmittance of the portion of the interference pigment printing layer 30 that does not have the first light transmission portion 33 is about 85%, and the light transmittance of the portion of the interference pigment printing layer 30 that has the first light transmission portion 33 is about 86%. The light transmittance of the portion of the smoke layer 40 that does not have the second light transmission portion 41 is about 47%, and the light transmittance of the portion of the smoke layer 40 that has the second light transmission portion 41 is about 53%. The light transmittance of the laminated portion of the interference pigment printing layer 30 and the smoke layer 40 that does not have the first light transmission portion 33 and the second light transmission portion 41 is preferably 18% to 46%, and more preferably 28% to 36%. By the interference pigment printing layer 30, the smoke layer 40, and the laminated portion of the interference pigment printing layer 30 and the smoke layer 40 having the light transmittances as described above, respectively, the light transmittance of the laminated portion of the interference pigment printing layer 30 and the smoke layer 40 having the first light transmission portion 33 and the second light transmission portion 41 can be adjusted to 23% to 51%.

[0097] The sum of the thicknesses (laminated thickness) of the laminated portion of the interference pigment printing layer 30 and the smoke layer 40 is preferably 1 μm to 50 μm, and more preferably 10 μm to 30 μm.

[0098] (Black layer) The black layer 50 is provided on the lower surface 401 of the smoke layer 40. The black layer 50 has a shape corresponding to the pattern to be displayed, and has an opening 51 that allows light from the light source 2 to pass through, and a light-shielding portion 52 that is located around the opening 51 and has light-shielding properties.

[0099] The opening 51 is formed in a rectangular shape in a cross-sectional view, but may be formed in a trapezoidal shape. By forming the opening 51 in a trapezoidal shape, depending on the material, type, etc. of the molded product 110 (see FIG. 6) on which the lower surface (lower side in FIG. 3) of the black layer 50 is installed, it becomes easier for the molded product 110 (see FIG. 6) to enter the opening 51 without creating a gap.

[0100] The black layer 50 can be formed in the same manner as the smoke layer 40, except that the content of a light-shielding color (e.g., black) pigment or dye used for forming the smoke layer 40 is increased so that the light transmittance becomes substantially zero. As the black layer 50, similar to the smoke layer 40, for example, a layer formed by printing a black ink composition can be used. The black layer 50 may be, for example, a conductive metal layer formed of a metal with low light transmittance. The metal layer is formed, for example, by a general coating method of a conductive paint such as screen coating.

[0101] Thus, the laminate 1A according to this embodiment includes a light adjustment layer 10, a transparent base material layer 20, an interference pigment printing layer 30, and a smoke layer 40. The light adjustment layer 10 has uneven portions 11 formed on its lower surface 102 so as to correspond to the shape of the design represented by the interference pigment printing layer 30. Therefore, the light adjustment layer 10 can give a tactile sensation that matches the design while expressing in accordance with the design displayed on the interference pigment printing layer 30 by the uneven portions 11, and diffuses and reflects, refracts, and scatters the visible light incident from the outside, making the boundary between the first light transmission portion 33 of the interference pigment printing layer 30, the second light transmission portion 41 of the smoke layer 40, and the black layer 50 less conspicuous.

[0102] By providing the interference pigment printing layer 30 with the smoke layer 40 on its lower side, the color of the design of the interference pigment printing layer 30 can be made more vivid. Further, the interference pigment printing layer 30 and the smoke layer 40 each have a first light transmission portion 33 and a second light transmission portion 41. For this reason, the interference pigment printing layer 30 and the smoke layer 40 exhibit stealth properties that suppress visual recognition of the light source 2 and the end face of the opening 51 disposed on the back side of the laminate 1A from the front side of the decorative laminate when the light source 2 is turned off, and light transmissivity that allows light from the light source 2 to pass through when the light source 2 is turned on, while improving the overall light transmittance of the laminate 1A to 30% to 50%. For this reason, when the light source 2 of the laminate 1A is turned on, even if the brightness of the light source 2 is not increased, the light from the light source 2 can be transmitted more efficiently and clearly projected, so that the overall brightness can be displayed high, and when the light source 2 is not turned on, the design of the interference pigment printing layer 30 can be expressed.

[0103] That is, the interference pigments 31 of four colors (red, green, blue, silver) contained in the interference pigment printing layer 30 are special pigments that can express colors by combining with a layer having a black color such as the smoke layer 40. The interference pigment printing layer 30 contains interference pigments 31 of four colors (red, green, blue, silver), a transparent binder resin 32, and an ultraviolet absorber, so that in a portion where the coating film removal portion 331 forming the first light transmission portion 33 is not formed, for example, it can exhibit a light transmissivity of about 33% to 41% and an overall light transmittance of about 79% (among which, the diffused light transmittance is about 33%). The interference pigment printing layer 30 can exhibit a light transmissivity of about 76 to 86% in the first light transmission portion 33 and an overall light transmittance of 80% (among which, the diffused light transmittance is 42%).

[0104] As described above, the smoke layer 40 is an ink composition containing a black pigment, an ultraviolet absorber, and a binder resin, and has a light transmittance obtained by subtracting the light transmittance of the first light transmission portion 33 from the light transmittance of the portion where the second light transmission portion 41 is not formed. By having the second light transmission portion 41, the smoke layer 40 can have a predetermined light transmittance (for example, about 40%). By having the second light transmission portion 41 on its main surface, the smoke layer 40 can have, for example, a predetermined light transmittance (for example, 30% to 40%) without being visually distinguishable, exhibit stealthiness that suppresses visual recognition of the light source 2 when the light is turned off, and exhibit light transmissivity that transmits light from the light source 2 when the light is turned on.

[0105] Therefore, the laminate 1A can sufficiently ensure the stealthiness that prevents the light source 2 and the opening 51 of the black layer 50, which are arranged on the back surface side of the molded product when the light source 2 is turned off, from being visually recognized from the surface of the laminate 1A, and can transmit and display the light emitted from the light source 2 with high luminance without increasing the luminance of the light source 2 when the light source 2 is turned on, and can increase the diffusion transmittance to improve the visibility when the light is turned on.

[0106] Further, the laminate 1A can reduce the variation in the overall light transmittance of the laminate 1A by adjusting the ratio of the light transmittances of the first light transmission portion 33 and the second light transmission portion 41. In particular, in the interference pigment printing layer 30, variations in layer thickness are likely to occur between the region where the first light transmission portion 33 is not formed, that is, the region where no printing is performed, and the region where the first light transmission portion 33 is formed, and a difference in light transmittance is likely to occur between the relatively thick portion and the thin portion of the layer. Since the laminate 1A can reduce the variation in the overall light transmittance, it can exhibit while suppressing the variation in stealthiness that suppresses visual recognition of the light source 2 when the light is turned off and light transmissivity that transmits light from the light source 2 when the light is turned on.

[0107] The laminate 1A can form the first light transmissive portion 33 and the second light transmissive portion 41 at the coating film removal portions 331 and 411 of the interference pigment printing layer 30 and the smoke layer 40. Since the interference pigment 31 does not exist in the coating film removal portions 331 and 411, the coating film removal portions 331 and 411 have high light transmissivity. Also, the coating film removal portions 331 and 411 can be formed by laser processing or the like in any shape and number at any location. In the plan view of the interference pigment printing layer 30 and the smoke layer 40, the laminate 1A can form the first light transmissive portion 33 and the second light transmissive portion 41 at any location of the interference pigment printing layer 30 and the smoke layer 40 so that the interference pigment printing layer 30 and the smoke layer 40 have a predetermined light transmittance (for example, 30% to 50%). Therefore, the laminate 1A sufficiently ensures the stealth property of suppressing the visibility of the light source 2 when the light is turned off, and stably transmits and displays the light emitted from the light source 2 at a high luminance without increasing the luminance of the light source 2 when the light source 2 is lit, and can increase the diffusion transmittance to stably enhance the visibility during lighting.

[0108] The laminate 1A can include a cured product of a transparent filling resin composition in the coating film removal portions 331 and 411 that constitute the first light transmissive portion 33 and the second light transmissive portion 41. Thereby, while the coating film removal portions 331 and 411 maintain high light transmissivity, the filling resin composition can be used also as the resin constituting the binder layer when providing a binder layer between the molded article 110 (FIG. 6) described later and the laminate 1A. For this reason, the laminate 1A can stably maintain the overall light transmittance at a desired light transmittance (for example, 30% to 50%), and can stably maintain the stealth property of suppressing the visibility of the light source 2 when the light is turned off and the light transmissivity of transmitting the light from the light source 2 when the light is lit. Therefore, the laminate 1A sufficiently ensures the stealth property of suppressing the visibility of the light source 2 and the end face of the opening 51 of the black layer 50 when the light is turned off, and continuously transmits and displays the light emitted from the light source 2 at a high luminance without increasing the luminance of the light source 2 when the light source 2 is lit, and can increase the diffusion transmittance to further stably enhance the visibility during lighting.

[0109] The laminate 1A has a light-shielding black layer 50 on the lower surface 401 of the smoke layer 40, and the black layer 50 can have an opening 51. The opening 51 is formed so that the region including the second light transmission portion 41 of the lower surface 401 of the smoke layer 40 is exposed. The black layer 50 hardly transmits the light from the light source 2 in the light-shielding portion 52. Therefore, the laminate 1A can transmit the light emitted from the light source 2 only through the opening 51 and through the region including the second light transmission portion 41 of the smoke layer 40. Thus, the laminate 1A surely has the stealth property of the opening 51 of the black layer 50 having a light-shielding function, and can emit the light emitted from the light source 2 from within the opening 51 with high luminance without increasing the luminance of the light source 2 when the light source 2 is lit.

[0110] The laminate 1A is provided with the first light transmission portion 33 and the second light transmission portion 41 at substantially the same position in a plan view of the laminate 1A, and the ratio of the first light transmission portion 33 and the second light transmission portion 41 can be set to 0.1% to 20% in a plan view of the interference pigment printing layer 30. Thereby, the laminate 1A can surely have a light transmittance of 30% to 40% as a whole, and can surely exhibit the stealth property of suppressing the visual recognition of the light source 2 at the time of turning off the light and the light transmittance of transmitting the light from the light source 2 at the time of turning on the light. Therefore, the laminate 1A sufficiently ensures the stealth property of suppressing the visual recognition of the light source 2 and the end face of the opening 51 of the black layer 50 at the time of turning off the light, and can more surely transmit and display the light emitted from the light source 2 with high luminance without increasing the luminance of the light source 2 when the light source 2 is lit, and can increase the diffusion transmittance to enhance the visibility at the time of turning on the light.

[0111] In the laminate 1A, in plan view of the interference pigment printing layer 30 and the smoke layer 40, the first light transmission portion 33 and the second light transmission portion 41 can be arranged in a hexagonal lattice, a square lattice, a rhombic lattice, or a line shape. Thereby, since the first light transmission portion 33 and the second light transmission portion 41 can be easily formed in an arbitrary shape at an arbitrary position, the printing layer in which the interference pigment printing layer 30 and the smoke layer 40 are laminated can be easily controlled to have a light transmittance of 30% to 50%. Therefore, since the laminate 1A is easily controlled so that the overall light transmittance of the laminate 1A is 30% to 40%, it is easy to ensure the stealth property of suppressing the visual recognition of the end faces of the light source 2 and the opening 51 of the black layer 50 when the light is turned off, and without increasing the luminance of the light source 2 when the light source 2 is lit, it is easy to stably transmit and display the light emitted from the light source 2 with high luminance and to enhance the visibility during lighting.

[0112] The sum of the thicknesses of the interference pigment printing layer 30 and the smoke layer 40 of the laminate 1A can be set to 1 μm to 50 μm. If the sum of the thicknesses is within the above range, the laminate 1A can surely exhibit the functions of the interference pigment printing layer 30 and the smoke layer 40. For this reason, the printing layer in which the interference pigment printing layer 30 and the smoke layer 40 are laminated can surely exhibit a light transmittance of 30% to 50%. Therefore, the laminate 1A can easily ensure the stealth property of suppressing the visual recognition of the end faces of the light source 2 and the opening 51 of the black layer 50 when the light is turned off, and can easily and stably exhibit the light transmittance of the light irradiated from the light source 2 when the light is on. Therefore, even without increasing the luminance of the light source 2 when the light source 2 is lit, the light emitted from the light source 2 can be stably and surely transmitted and displayed with high luminance and the visibility during lighting can be enhanced.

[0113] Since the laminate 1A has the above characteristics, it can be effectively used as a surface layer for imparting display and decoration to the light emitted from a light source in a molded article, a display device, etc.

[0114] [Modification Example] An example of another configuration of the laminate 1A according to this embodiment will be described. Instead of the interference pigment printing layer 30 and the smoke layer 40, the laminate 1A may include a pigment printing layer containing an ultraviolet absorber and an underlying smoke white layer. FIG. 5 is a cross-sectional view of an example of another configuration of the laminate according to this embodiment as viewed from the A-A direction in FIG. 2. As shown in FIG. 5, the laminate 1B includes a light control layer 10, a transparent base material layer 20, a pigment printing layer 60, an underlying smoke white layer 70, and a black layer 50 laminated in this order.

[0115] (Pigment printing layer) The pigment printing layer 60 is a printing layer made by blending pigments 61 that represent four colors of cyan, magenta, yellow, and black, and contains a plurality of types (four colors of cyan, magenta, yellow, and black) of particulate pigments 61 and an ultraviolet absorber as an additive in a binder resin 62, and represents a visible design and has light scattering properties. Note that the pigments 61 to be blended are not limited to four colors, and may be any two or three colors of cyan, magenta, yellow, and black, or five or more colors including cyan, magenta, yellow, black, and white. When using a white pigment, for example, the above-described interference pigment and a pigment having a scattering effect such as silica can be used as a pigment capable of expressing white with high light transmittance.

[0116] The pigments 61 may include a cyan pigment 61C, a magenta pigment 61M, a yellow pigment 61Y, and a black pigment 61K. As the pigments 61, generally used pigments can be used.

[0117] The pigment printing layer 60 includes a plurality of types of pigment printing layers 60-N (N is an integer of 1 or more) according to the colors expressed by the types of the pigments 61C, 61M, 61Y, and 61K and the respective contents of the pigments 61C, 61M, 61Y, and 61K. In FIG. 5, it includes a first pigment printing layer 60-1, a second pigment printing layer 60-2, and a third pigment printing layer 60-3.

[0118] The first pigment printing layer 60-1, the second pigment printing layer 60-2, and the third pigment printing layer 60-3 all contain four types of pigments 61 that emit light of four colors (cyan, magenta, yellow, and black) in a binder resin 32. In FIG. 5, the first pigment printing layer 60-1, the second pigment printing layer 60-2, and the third pigment printing layer 60-3, similar to the first interference pigment printing layer 30-1, the second interference pigment printing layer 30-2, and the third interference pigment printing layer 30-3, respectively, by additive mixing of four types of pigments 61 at a predetermined ratio, express "dark brown", "light brown", and "black" of the wood grain pattern as the first color mixing, the second color mixing, and the third color mixing.

[0119] Since the ultraviolet absorber and the binder resin 62 contained in the pigment printing layer 60 are the same as the ultraviolet absorber and the binder resin 32 used in the interference pigment printing layer 30, the details are omitted.

[0120] The pigment printing layer 60 has a third light transmissive portion 63 having light transmissivity. The third light transmissive portion 63 is an area that does not contain the pigment 61 and is not printed.

[0121] The third light transmissive portion 63 can be formed by a coating film removal portion 631 that is a through hole provided in the pigment printing layer 60. The coating film removal portion 631 may contain a cured product of a light transmissive filling resin composition. Since the configuration of the third light transmissive portion 63 and the filling resin composition and the like are the same as those of the first light transmissive portion 33 and the filling resin composition of the interference pigment printing layer 30, the details are omitted.

[0122] The shape, arrangement, ratio, and formation method of the third light transmissive portion 63 may be the same as those of the shape, arrangement, and ratio of the first light transmissive portion 33.

[0123] That is, similar to the first light transmissive portion 33, the third light transmissive portion 63 may be formed in an appropriate arbitrary shape such as a polygon like a circle, an ellipse, a quadrilateral, etc. in plan view. Similar to the first light transmissive portion 33, the third light transmissive portion 63 may be arranged on the main surface 601 of the third light transmissive portion 63 in an appropriate arbitrary arrangement such as a hexagonal lattice, a square lattice, a rhombic lattice, a line shape, etc., or may be arranged substantially evenly at a predetermined interval on the main surface 301 in plan view, or may be arranged irregularly. The ratio of the third light transmissive portion 63 is preferably 0.1% to 35%, more preferably 0.5% to 18%, and even more preferably 1.0% to 15% in plan view of the pigment printing layer 60, similar to the first light transmissive portion 33.

[0124] The forming method of the third light transmissive portion 63 can be formed in the same manner as the forming method of the first light transmissive portion 33, so the details are omitted.

[0125] (Base smoke white layer) The base smoke white layer 70 is provided on the lower surface 602 of the pigment printing layer 60. Similar to the smoke layer 40, the base smoke white layer 70 has a light transmittance in a predetermined range (for example, when only the base smoke white layer 70 is concerned, it is 1% to 70%, preferably 1% to 47%). Therefore, similar to the smoke layer 40, when the light source 2 is turned off, the base smoke white layer 70 makes the design of the pigment printing layer 60 more visible, enhances the visibility and discriminability of the design, and improves the display quality. When the light is on, it has a function of having a light transmittance in a predetermined range (for example, when only the base smoke white layer 700 is concerned, it is 30% to 70%, preferably 53% to 70%, and overall it is 30% to 50%) for the entire laminate 1B including the coating film removing portion 631.

[0126] The base smoke white layer 70 can be formed, for example, by printing an ink composition containing a pigment or dye of a light reducing color (for example, white) and an ultraviolet absorber in a transparent binder resin. As the base smoke white layer 70, for example, a layer formed by printing a white ink composition can be used.

[0127] The base smoke white layer 70 has a fourth light transmission portion 71 having light transmissivity, similar to the pigment printing layer 60. The fourth light transmission portion 71 is an area that does not contain the pigment 61 and is not printed, similar to the third light transmission portion 63. The fourth light transmission portion 71 may be filled with a binder resin (not shown).

[0128] The arrangement of the fourth light transmission portion 71 may be the same as that of the second light transmission portion 41. That is, the fourth light transmission portion 71 is arranged at a position where it at least partially overlaps with the third light transmission portion 63 in a plan view of the main surface of the base smoke white layer 70. Preferably, the fourth light transmission portion 71 is arranged at substantially the same position as the third light transmission portion 63 on the main surface of the base smoke white layer 70 in a plan view.

[0129] Similar to the pigment printing layer 60, the fourth light transmission portion 71 can be formed by a coating film removing portion 711 of the base smoke white layer 70, and preferably includes a cured product of a transparent filling resin composition in the coating film removing portion 711. As the transparent filling resin composition contained in the fourth light transmission portion 71, the transparent filling resin composition filled in the coating film removing portion 631 can be used.

[0130] Note that the transparent filling resin composition may be contained only in the coating film removing portion 631 of the pigment printing layer 60 or only in the coating film removing portion 711 of the base smoke white layer 70, or may be contained only in a part of the coating film removing portions 631 and 711.

[0131] The shape and arrangement of the fourth light transmission portion 71 may be the same as or different from the shape and arrangement of the third light transmission portion 63. From the viewpoint of facilitating the passage of the light of the light source 2 through the pigment printing layer 60 and the base smoke white layer 70, it is preferable that the shape and arrangement of the fourth light transmission portion 71 be the same as the shape and arrangement of the third light transmission portion 63.

[0132] Similar to the third light transmission portion 63, the fourth light transmission portion 71 can be formed by a method such as laser processing.

[0133] Preferably, the ratio of the fourth light transmission portion 71 is the same as that of the third light transmission portion 63.

[0134] When the fourth light transmission part 71 is at the same position or substantially the same position as the third light transmission part 63 in the plan view of the pigment printing layer 60, the ratio of the third light transmission part 63 and the fourth light transmission part 71 is preferably 0.1% to 20%, more preferably 0.5% to 18%, and even more preferably 1.0% to 15% in the plan view of the pigment printing layer 60 or the base smoke white layer 70, similar to the ratio of the third light transmission part 63.

[0135] The light transmittance of the laminated portion of the pigment printing layer 60 and the base smoke white layer 70 is preferably 23% to 51%, and more preferably 33% to 41%.

[0136] <Decorative molded product> A decorative molded product including the laminate 1A according to this embodiment will be described. FIG. 6 is a partially enlarged cross-sectional view showing a part of the decorative molded product including the laminate 1A according to this embodiment. As shown in FIG. 6, the decorative molded product 100 includes a molded product 110 and a laminate 1A attached to the surface of the molded product 110. Note that a binder layer may be provided on the surface of the molded product 110, and the back surface of the laminate 1A may be attached to the surface of the molded product 110 via the binder layer.

[0137] Examples of the molded product 110 include materials with high light transmittance. Examples of materials with high light transmittance include olefin resins, acrylic resins, styrene resins, vinyl resins, fluorine resins, engineering plastics, super engineering plastics, bioengineering plastics, biodegradable plastics, thermosetting resins, and glass. These materials may be used alone or in combination of two or more.

[0138] Examples of olefin resins include polyethylene resins such as polyethylene (PE), high-density polyethylene, and low-density polyethylene; polypropylene resins such as polypropylene (PP) and propylene-ethylene copolymers; and cycloolefin resins such as cycloolefin polymer (COP), cycloolefin copolymer (COC), and ethylene-cyclic olefin copolymer. Among these, it is preferable to use cycloolefin resins in terms of ease of production, the range of wavelengths through which light can pass, and chemical resistance. Among them, COP and COC are particularly preferable.

[0139] Examples of acrylic resins include polymethyl methacrylate (PMMA).

[0140] Examples of styrene resins include polystyrene (PS), acrylonitrile-styrene resin, and acrylonitrile-butadiene-styrene (ABS) resin.

[0141] Examples of vinyl resins include polyvinyl chloride (PVC) resin, vinylidene chloride resin, polyacrylonitrile, polyvinyl acetate, acrylic acid copolymer, and polyvinyl alcohol.

[0142] Examples of fluorine resins include polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (PCTFE), polyvinyl fluoride resin, and polyvinylidene fluoride.

[0143] Examples of engineering plastics include polycarbonate (PC) resin; polyacetal (POM) resin; polyester resins such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and polycyclohexylene dimethyl terephthalate; polyphenylene ether (PPE) resin; polyphenylene oxide; and polyamide (PA) resins such as nylon 6, nylon 66, and aromatic polyamide.

[0144] Examples of super engineering plastics include polyphenylene sulfide (PPS) resin, polysulfone (PSF) resin, polyethersulfone (PES), polyetheretherketone (PEEK), polyarylate resin, aromatic polyester resin, polyimide (PI) resin, polyamideimide (PAI) resin, polyetherimide (PEI) resin, and aramid resin.

[0145] Bioengineering plastics are copolymers with engineering plastics, using plant-derived isosorbide (isosorbide) as the main raw material and isosorbide as the copolymerization component.

[0146] Isosorbide is abundantly present as a plant-derived resource and is obtained by dehydrating and condensing sorbitol produced from various starches that are easily available. Isosorbide is a secondary heterocyclic diol (dihydroxy compound) derived from plant raw materials such as starch and sugar. Although isosorbide does not have an aromatic structure in its molecular skeleton, it has a rigid condensed ring structure, so it can impart high heat resistance and rigidity to the derived resin. The copolymer using isosorbide is amorphous, and the glass transition temperature can be adjusted by selecting the copolymerization component and the copolymerization ratio.

[0147] In isosorbide, the heterocyclic structure containing an ether bond activates the hydroxyl group, showing high acidity despite being a secondary diol. By transesterifying with engineering plastics, a high molecular weight polymer, which is a bioengineering plastic, can be obtained. The polymerization method is the transesterification method or the melt polymerization method (melt method). As a catalyst for the transesterification method, in isosorbide, group 2 metals (salts) showing relatively soft basicity such as calcium and magnesium show high polymerization activity.

[0148] Examples of biodegradable plastics include polylactic acid (PLA), polyhydroxyalkanoate (PHA), polybutylene succinate (PBS), polycaprolactone (PCL), etc.

[0149] Examples of the thermosetting resin include epoxy resin, silicone resin, phenolic resin, unsaturated polyester resin, polyurethane resin, and the like.

[0150] The molded article 110 is preferably a composite including an engineering plastic (particularly, PC resin), a bioengineering plastic, or a biodegradable plastic and a transparent resin.

[0151] The method for manufacturing the decorated molded article 100 is not particularly limited, and a general method of integrally molding the molded article 110 and the laminate 1A can be used. For example, the decorated molded article 100 can be obtained by integrally molding the laminate 1A with the molded article 110 through a binder layer on the back surface thereof simultaneously with the injection molding of the molded article 110. Further, after attaching an optically transparent adhesive sheet (OCA) to the back surface of the laminate 1A instead of the binder layer, it can be obtained by laminating and integrally molding it onto a molded body prepared in a separate process by a vacuum pressure lamination method (TOM molding) or the like.

[0152] As described above, by providing the laminate 1A on the molded article 110, the decorated molded article 100 can sufficiently ensure the stealth property of suppressing the visual recognition of the light source 2 and the opening 51 of the black layer 50 from the surface side of the laminate 1A when the light source 2 is turned off, and can transmit and display the light emitted from the light source 2 with high brightness without increasing the brightness of the light source 2 when the light source 2 is turned on, and can increase the diffusion transmittance to improve the visibility during lighting. Therefore, the decorated molded article 100 can show the design on the surface of the laminate 1A when turned off, and can clearly display characters or the like represented by the light of the light source 2 on the surface of the laminate 1A when turned on, so that it can be easily visually recognized from the outside.

[0153] Since the decorated molded article 100 has the above-described characteristics, it can be suitably used, for example, for vehicle interior parts such as the front panel, center console rear center panel, and door of a vehicle, architectural interior materials, and home appliance housings.

[0154] <Display device> A display device including the laminate 1A according to this embodiment will be described. Here, a case where the display device is the front panel of a vehicle will be described.

[0155] FIG. 7 is a diagram showing an example of a plan view of a display device including a laminate according to an embodiment of the present invention, showing a state where it is turned off and a state where it is turned on. FIG. 8 is a partially enlarged cross-sectional view of FIG. 7, and is a partially enlarged cross-sectional view showing a part of the display device including the laminate according to this embodiment. Since the layer configuration of the laminate included in the display device is the same as the layer configuration shown in FIG. 3 or FIG. 6 described above, in FIG. 8, the layer configuration of the laminate included in the display device is shown in a simplified manner.

[0156] As shown in FIG. 7, the display device 200 has a front panel 210 which is a decorative molded product with a laminate 1A having a design consisting of a wood grain pattern pasted on the surface of the molded product. As shown in FIG. 8, the display device 200 has a display unit 220 on the back surface of the front panel 210. Since the above-described decorative molded product 100 is used for the front panel 210, details of the front panel 210 are omitted.

[0157] The display unit 220 has a light source 221 which is a plurality of light emitting parts arranged in a matrix, and is a display for displaying characters, numbers, images, etc. on the surface of the front panel 210. The display unit 220 is arranged so that the light emitted from the light source 221 passes through the front panel 210.

[0158] The light source 221 is not particularly limited, and for example, an LED, an LCD device, or the like can be used.

[0159] As shown in FIG. 7, when the display unit 220 is turned off, only the wood grain pattern design is visible on the surface of the laminate 1A of the front panel 210. When the display unit 220 is turned on, the light emitted from the display unit 220 passes through the front panel 210, and images such as a map, a driving route, time, temperature, vehicle speed, total driving distance, etc. are displayed on the surface of the front panel 210. Note that the images are not limited to symbols and figures for information transmission, and may be, for example, decorative patterns and signals.

[0160] The display device 200 includes a front panel 210 and a display unit 220. Since the laminate 1A is included in the front panel 210, sufficient stealth performance is ensured to suppress the visibility of the display unit 220 from the surface side of the laminate 1A when the light source 2 is turned off. When the display unit 220 is turned on, the display screen emitted from the display unit 2202 can be transmitted and displayed with high brightness without increasing the brightness of the display unit 220, and the diffusion transmittance can be increased to improve the visibility during lighting, making it easily visible to people inside the vehicle such as the driver.

[0161] As described above, the embodiments have been explained. However, the above embodiments are presented as examples, and the present invention is not limited by the above embodiments. The above embodiments can be implemented in various other forms, and various combinations, omissions, replacements, changes, etc. can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and its equivalent scope.

[0162] Note that the aspects of the embodiments of the present invention are as follows, for example. <1> A decorative laminate through which light emitted from a light source passes, having a light-transmissive substrate having a first main surface and a second main surface opposite to the first main surface, a light adjustment layer provided on the first main surface side of the substrate, An interference pigment printing layer provided on the second main surface side of the base material, containing a plurality of types of interference pigments and an ultraviolet absorber in a binder resin, and representing a visible design. A black semi-transparent printing layer provided on the surface of the interference pigment printing layer opposite to the base material, containing a pigment and an ultraviolet absorber in a binder resin. Comprising The light adjustment layer has uneven portions formed on the surface opposite to the base material so as to correspond to the shape of the design represented by the interference pigment printing layer. The interference pigment printing layer has a first light transmission portion through which the light can pass through the interference pigment printing layer. The black semi-transparent printing layer has a second light transmission portion through which the light can pass at a position where at least a part thereof overlaps with the first light transmission portion in a plan view of the main surface of the black semi-transparent printing layer. A decorative laminate. <2> The decorative laminate according to <1>, wherein the first light transmission portion and the second light transmission portion are each a coating film removal portion formed on the main surface of the interference pigment printing layer and the black semi-transparent printing layer. <3> The decorative laminate according to <2>, wherein at least one of the first light transmission portion and the second light transmission portion contains a cured product of a filling resin composition having light transparency in the coating film removal portion. <4> A black symbol printing layer is provided on the surface of the black semi-transparent printing layer opposite to the interference pigment printing layer. The black symbol printing layer has an opening formed so that the region including the second light transmission portion is exposed. The decorative laminate according to any one of <1> to <3>. <5> The first light transmission portion and the second light transmission portion are substantially at the same position in a plan view. The ratio of the first light transmission portion and the second light transmission portion is 0.1% to 20% in a plan view of the interference pigment printing layer. The decorative laminate according to any one of <1> to <4>. <6> At least one of the first light transmission portion and the second light transmission portion is arranged in a hexagonal lattice, square lattice, rhombic lattice or line shape. The decorative laminate according to any one of <1> to <5>. <7> The sum of the thicknesses of the interference pigment printing layer and the black semi-transparent printing layer is 1 μm to 50 μm, and the decorative laminate according to any one of <1> to <6>. <8> A decorative laminate through which light emitted from a light source passes, having a light-transmissive substrate having a first main surface and a second main surface opposite to the first main surface, a light adjustment layer provided on the first main surface side of the substrate, provided on the second main surface side of the substrate, containing a plurality of types of pigments and an ultraviolet absorber in a binder resin, representing a visible design, and having a pigment printing layer having light refraction, light reflection, or light scattering properties, and comprising the light adjustment layer has uneven portions formed on the surface opposite to the substrate so as to correspond to the shape of the design represented by the pigment printing layer, the pigment printing layer is a decorative laminate having a third light transmission portion through which the light can pass through the main surface of the pigment printing layer. <9> An undercoat smoke white layer provided on the surface of the pigment printing layer opposite to the substrate, containing a pigment and an ultraviolet absorber in a binder resin, the undercoat smoke white layer has a fourth light transmission portion through which the light can pass at a position where at least a part of the fourth light transmission portion overlaps with the third light transmission portion in a plan view of the main surface of the undercoat smoke white layer, and the decorative laminate according to <8>. <10> The third light transmission portion and the fourth light transmission portion are each a coating film removal portion formed on the main surface of the pigment printing layer and the undercoat smoke white layer, and the decorative laminate according to <9>. <11> At least one of the third light transmission portion and the fourth light transmission portion contains a cured product of a filling resin composition having light transmissivity in the coating film removal portion, and the decorative laminate according to <10>. <12> The surface of the undercoat smoke white layer opposite to the pigment printing layer has a black symbol printing layer, the black symbol printing layer has an opening formed so that a region including the light transmission portion of the undercoat smoke white layer is exposed, and the decorative laminate according to any one of <9> to <11>. <13>The third light transmission part and the fourth light transmission part are in substantially the same position in plan view, The ratio of the third light transmission part to the fourth light transmission part is 0.1% to 20% in plan view of the pigment printing layer, and the decorative laminate according to any one of <9> to <12>. <14>The decorative laminate according to any one of <9> to <13>, wherein at least one of the third light transmission part and the fourth light transmission part is provided in a hexagonal lattice shape, a square lattice shape, a rhombic lattice shape, or a linear shape. <15>The sum of the thicknesses of the pigment printing layer and the base smoke white layer is 1 μm to 50 μm, and the decorative laminate according to any one of <9> to <14>. <16>A molded article, The decorative laminate according to any one of <1> to <15>, provided on at least a part of the surface of the molded article, And a decorated molded article comprising the same. <17>The decorated molded article according to <16>, A light source disposed on the back side of the decorated molded article, And a display device comprising the same.

[0163] This application claims priority based on Japanese Patent Application No. 2022-048595 filed with the Japan Patent Office on March 24, 2022, and incorporates all the contents described in the above application.

Explanation of Signs

[0164] 1A, 1B Laminate (decorative laminate) 2, 221 Light source 10 Light adjustment layer 11 Concavo-convex part 20 Transparent base material layer (base material) 30 Interference pigment printing layer 30-1 First interference pigment printing layer 30-2 Second interference pigment printing layer 31 Interference pigment 32, 62 Binder resin 33 First light transmission part 331, 631 Coating film removal part 40 Smoke layer (black semi-transparent printing layer) 41 Second light transmission part 50 Black layer (black symbol printing layer) 51 Opening 60 Pigment printing layer 61 Pigment 63 Third light transmission part 70 Base smoke white layer 71 Fourth light transmission part 100 Decorative molded product 110 Molded product 200 Display device 210 Front panel 220 Display part

Claims

1. A decorative laminate through which light emitted from a light source passes, comprising: a substrate having light transmissivity and having a first main surface and a second main surface opposite to the first main surface; a light adjustment layer provided on the first main surface side of the substrate; a interference pigment printing layer provided on the second main surface side of the substrate, containing a plurality of types of interference pigments and an ultraviolet absorber in a binder resin, and representing a visible design; a black semi-transparent printing layer provided on the surface of the interference pigment printing layer opposite to the substrate, containing a pigment and an ultraviolet absorber in a binder resin; wherein: the light adjustment layer has uneven portions formed on the surface opposite to the substrate so as to correspond to the shape of the design represented by the interference pigment printing layer; the interference pigment printing layer has a first light transmissive portion through which the light can pass through the interference pigment printing layer; the black semi-transparent printing layer has a second light transmissive portion through which the light can pass at a position where at least a part of the second light transmissive portion overlaps with the first light transmissive portion in a plan view of the main surface of the black semi-transparent printing layer; the first light transmissive portion and the second light transmissive portion are each a coating film removal portion formed on the main surface of the interference pigment printing layer and the black semi-transparent printing layer, respectively, of the decorative laminate.

2. (Deleted)

3. The decorative laminate according to claim 1, wherein at least one of the first light transmissive portion and the second light transmissive portion contains a cured product of a filling resin composition having light transmissivity within the coating film removal portion.

4. The decorative laminate according to claim 1, further comprising a black symbol printing layer on the surface of the black semi-transparent printing layer opposite to the interference pigment printing layer, wherein the black symbol printing layer has an opening formed so that the region including the second light transmissive portion is exposed.

5. The first light transmissive portion and the second light transmissive portion are substantially at the same position in a plan view, and the ratio of the first light transmissive portion to the second light transmissive portion is 0.1% to 20% in a plan view of the interference pigment printing layer.

6. The decorative laminate according to claim 1, wherein at least one of the first light transmissive portion and the second light transmissive portion is arranged in a hexagonal lattice, a square lattice, a rhombic lattice or a line shape.

7. The decorative laminate according to claim 1, wherein the sum of the thicknesses of the interference pigment printing layer and the black semi-transparent printing layer is 1 μm to 50 μm.

8. A decorative laminate through which light emitted from a light source passes, comprising: a substrate having light transmissivity and having a first main surface and a second main surface opposite to the first main surface; An optical adjustment layer provided on the first main surface side of the base material; A pigment printing layer provided on the second main surface side of the base material, containing a plurality of types of pigments and an ultraviolet absorber in a binder resin, representing a visible design, and having light refraction properties, light reflection properties, or light scattering properties; An undercoat smoke white layer provided on the surface of the pigment printing layer opposite to the base material, containing a pigment and an ultraviolet absorber in a binder resin; Comprising: The optical adjustment layer has uneven portions formed on the surface opposite to the base material so as to correspond to the shape of the design represented by the pigment printing layer; The pigment printing layer has a third light transmission portion on the main surface of the pigment printing layer through which light can pass; The undercoat smoke white layer has a fourth light transmission portion on the main surface of the undercoat smoke white layer, at a position where at least a part thereof overlaps with the third light transmission portion in plan view, through which light can pass; The third light transmission portion and the fourth light transmission portion are each a coating film removal portion formed on the main surface of the pigment printing layer and the undercoat smoke white layer, and is a decorative laminate.

9. (Deleted)

10. (Deleted)

11. The decorative laminate according to claim 8, wherein at least one of the third light transmission portion and the fourth light transmission portion contains a cured product of a filling resin composition having light permeability in the coating film removal portion.

12. The undercoat smoke white layer has a black symbol printing layer on the surface opposite to the pigment printing layer, The black symbol printing layer has an opening formed so that a region including the light transmission portion of the undercoat smoke white layer is exposed, and is a decorative laminate according to claim 8.

13. The third light transmission portion and the fourth light transmission portion are substantially at the same position in plan view, The ratio of the third light transmission portion and the fourth light transmission portion is 0.1% to 20% in plan view of the pigment printing layer, and is a decorative laminate according to claim 8.

14. The decorative laminate according to claim 8, wherein at least one of the third light transmission portion and the fourth light transmission portion is provided in a hexagonal lattice shape, a square lattice shape, a rhombic lattice shape, or a linear shape.

15. The sum of the thicknesses of the pigment printing layer and the undercoat smoke white layer is 1 μm to 50 μm, and is a decorative laminate according to claim 8.

16. A molded article, A decorative laminate according to claim 1 or 8 provided on at least a part of the surface of the molded article, A decorated molded article comprising:

17. A decorated molded article according to claim 16, A light source disposed on the back side of the decorated molded article, A display device comprising the same.

Images