Shaped sheet, method for producing shaped sheet, and method for producing article

Abstract

To provide a shaped sheet that allows imparting of a surface shape capable of expressing a matting effect and a gloss-matte sensation.SOLUTION: A shaped sheet 10 includes an optical layer 1 and a cured resin layer 2 arranged on one side of the optical layer. The optical layer, when seen in the thickness direction of the shaped sheet, comprises a first optical part A1 and a second optical part A2 differing in optical properties. The surface of the cured resin layer opposite to the optical layer has a surface shape having a wrinkle structure, and, when seen in the thickness direction, the surface shape in a first surface region S11 overlapping at least part of the first optical part differs from the surface shape in a second surface region S12 overlapping at least part of the second optical part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to shaped sheets, methods for manufacturing shaped sheets, and methods for manufacturing articles. [Background technology]

[0002] As a method for producing a matte article, a method has been proposed in which light such as excimer light is used to form an uneven surface having a wrinkled structure on the surface of a resin. For example, in Patent Document 1, first, excimer light is irradiated onto the surface of a coating film made of a photocurable resin. Then, ultraviolet light is irradiated onto the coating film to cure the entire coating film. This forms a wrinkled structure on the surface of the coating film. In Patent Document 1, the wrinkled structure formed in this manner results in a coating film with low gloss. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-24102 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, designs with a matte effect have been in demand for decorative sheets, decorative materials, and other products. To achieve more sophisticated design expression, designs that have a low gloss feel but a gloss difference (gloss-matt feel) within the same plane are sometimes required. However, it is difficult to adjust the curing conditions (light irradiation conditions) when forming a wrinkled structure to create a gloss difference within the same plane.

[0005] The present disclosure has been made in consideration of the above-mentioned circumstances, and its main object is to provide a shaped sheet that can be shaped into a surface shape that can exhibit a matte effect and a gloss-matte feel. [Means for solving the problem]

[0006] A first embodiment of the present disclosure provides a shaped sheet having an optical layer and a cured resin layer arranged on one side of the optical layer, wherein the optical layer has a first optical section and a second optical section having different optical properties when viewed in the thickness direction of the shaped sheet, and the surface of the cured resin layer opposite the optical layer has a surface shape having a wrinkled structure, and when viewed in the thickness direction, the surface shape of a first surface section overlapping at least a portion of the first optical section is different from the surface shape of a second surface section overlapping at least a portion of the second optical section.

[0007] Another embodiment of the present disclosure provides a method for producing the above-mentioned shaped sheet, comprising: an optical layer forming step of forming an optical layer including the first optical portion and the second optical portion having different optical properties by applying two or more inks with different compositions; and a cured resin layer forming step of forming a coating layer by applying a curable resin composition to one side of the optical layer, and curing the coating layer by performing the following in this order on the coating layer: (1) a preliminary curing treatment by irradiating with light having a wavelength of more than 320 nm and not more than 400 nm, (2) a first curing treatment by irradiating with light having a first wavelength of 100 nm or more and less than 200 nm, and (3) a second curing treatment by irradiating with at least one of an electron beam and light having a second wavelength of 200 nm or more and not more than 400 nm, thereby forming the cured resin layer.

[0008] Another embodiment of the present disclosure provides a method for manufacturing an article, the method including a shaped sheet preparation step of preparing the above-mentioned shaped sheet, a step of preparing a shaped body, a shaping step of pressing the surface of the shaped sheet facing the cured resin layer against the shaped body to shape the shaped body into a surface shape that is the inverse of the surface shape of the cured resin layer of the shaped sheet, and a peeling step of peeling off the shaped sheet. [Effects of the Invention]

[0009] The present disclosure has the effect of providing a shaped sheet that can be shaped into a surface shape that can exhibit a matte effect and a gloss-matte feel. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic cross-sectional view illustrating a shaped sheet according to the present disclosure. [Figure 2] 1 is an example of a top view of a shaped sheet according to the present disclosure and an image observed by a shape analysis laser microscope. [Figure 3] 1 is a schematic cross-sectional view illustrating a shaped sheet having an optical layer according to a first embodiment of the present disclosure. [Figure 4] FIG. 2 is a schematic cross-sectional view illustrating a shaped sheet having an optical layer according to a second embodiment of the present disclosure. [Figure 5] FIG. 2 is a schematic cross-sectional view illustrating a shaped sheet having an optical layer according to a third embodiment of the present disclosure. [Figure 6] FIG. 10 is a schematic cross-sectional view illustrating a shaped sheet having an optical layer according to a fourth embodiment of the present disclosure. [Figure 7] 1 is a schematic cross-sectional view illustrating a shaped sheet according to the present disclosure. [Figure 8] FIG. 1 is a process flow diagram illustrating an example of a method for manufacturing an article according to the present disclosure. [Figure 9] 1 shows images of the first surface portion and the second surface portion of the shaped sheets of Examples 1 and 2 observed by a shape analysis laser microscope. DETAILED DESCRIPTION OF THE INVENTION

[0011] Below, embodiments will be described with reference to the drawings etc. However, the present disclosure can be implemented in many different forms and should not be limited to the description of the embodiments exemplified below. Furthermore, to make the explanation clearer, the drawings may show the width, thickness, and shape of each part schematically compared to the actual form, but this is merely an example and should not be interpreted as limiting.

[0012] In this specification, when describing a mode in which another component is placed on a certain component, the term "above" or "below" is used, unless otherwise specified, to include both a case in which another component is placed directly above or below a certain component so as to be in contact with the component, and a case in which another component is placed above or below a certain component with another component interposed therebetween. Also, in this specification, when describing a mode in which another component is placed on the surface of a certain component, the term "on the surface" or "on the surface side" is used, unless otherwise specified, to include both a case in which another component is placed directly above or below a certain component so as to be in contact with the component, and a case in which another component is placed above or below a certain component with another component interposed therebetween.

[0013] In addition, in this specification, the terms "plate," "sheet," and "film" are not distinguished from one another solely based on differences in name. For example, a "sheet" also includes a member called a "plate" or a "film."

[0014] The shaped sheet, the method for manufacturing the shaped sheet, and the method for manufacturing the article according to the present disclosure will be described in detail below.

[0015] A. Shaped sheet The shaped sheet of the present disclosure has an optical layer and a cured resin layer arranged on one side of the optical layer, and the optical layer has a first optical section and a second optical section having different optical properties when viewed in the thickness direction of the shaped sheet, and the surface of the cured resin layer opposite the optical layer has a surface shape with a wrinkled structure, and when viewed in the thickness direction, the surface shape of a first surface section overlapping at least a portion of the first optical section is different from the surface shape of a second surface section overlapping at least a portion of the second optical section.

[0016] 1 is a schematic cross-sectional view illustrating a shaped sheet according to the present disclosure. As shown in FIG. 1, the shaped sheet 10 has an optical layer 1 and a cured resin layer 2 disposed on one side of the optical layer 1. The optical layer 1 is oriented in the thickness direction D of the shaped sheet 10. TWhen viewed from the above, the cured resin layer 2 has a first optical portion A1 and a second optical portion A2 which have different optical properties. A surface S1 of the cured resin layer 2 opposite to the optical layer 1 has a wrinkled structure. The surface S1 of the cured resin layer 2 opposite to the optical layer 1 may also be referred to as the first surface S1 of the cured resin layer 2. In the present disclosure, the first surface S1 is T When viewed from the front, the shaped sheet has a first surface portion S11 that overlaps with at least a portion of the first optical portion A1 and a second surface portion S12 that overlaps with at least a portion of the second optical portion A2. Figure 2(a) is a top view of the shaped sheet viewed from the cured resin layer side, and Figure 2(b) is an image of the first surface portion S11 and the second surface portion S12 observed with a shape analysis laser microscope. As shown in Figures 2(a) and 2(b), the surface shape of the first surface portion S11 and the surface shape of the second surface portion S12 are different.

[0017] As shown in Figure 7(a), the shaped sheet 10 may have a support base layer 3 disposed on the surface of the optical layer 1 opposite to the cured resin layer 2. As shown in Figure 7(b), the shaped sheet 10 may have a primer layer 4 disposed between the cured resin layer 2 and the optical layer 1.

[0018] According to the shaped sheet of the present disclosure, the surface of the cured resin layer opposite the optical layer has a wrinkled structure, which makes it possible to form a surface shape having a wrinkled structure that can exhibit a matte effect, thereby enabling the production of an article with a low gloss.

[0019] Furthermore, the shaped sheet of the present disclosure has a cured resin layer on an optical layer having a first optical section and a second optical section with different optical properties, and as a result, the surface shape of the first surface S1 of the cured resin layer 2 differs depending on the optical properties of the first optical section and the second optical section, due to the mechanism described below. That is, when viewed from the thickness direction, the first surface of the cured resin layer has a different surface shape in the first surface section that overlaps with at least a portion of the first optical section and a different surface shape in the second surface section that overlaps with at least a portion of the second optical section. This results in a difference between the matte effect exerted by the first surface section and the matte effect exerted by the second surface section. This results in a shaped sheet that can be formed into a surface shape that can exhibit a glossy matte finish.

[0020] Hereinafter, a case where the first surface portion of the cured resin layer has a greater matte effect than the second surface portion will be described.

[0021] In the present disclosure, an optical layer having a first optical portion and a second optical portion with different optical properties is formed by patterning with inks of different compositions. Using inks makes it easy to form fine patterns. Therefore, it is possible to form fine first and second surface portions, resulting in a shaped sheet that can be shaped into a surface shape that exhibits a fine gloss and matte finish. Furthermore, compared to directly irradiating the surface layer of an article with light to form a wrinkle structure, shaping using the shaped sheet of the present disclosure allows for stable and easy production of an article with a low gloss and matte finish.

[0022] Hereinafter, each configuration of the shaped sheet in the present disclosure will be described.

[0023] 1.Optical layer The shaped sheet of the present disclosure has an optical layer. T From this perspective, the optical layer has a first optical portion A1 and a second optical portion A2 that have different optical properties. In the present disclosure, "different optical properties" refers to any of the first to fourth aspects described below. The optical layer is a layer patterned with two or more types of ink that have different optical properties.

[0024] The optical layer is TFrom this perspective, it is sufficient that the optical layer has a first optical portion A1 and a second optical portion A2 that have different optical properties from each other, and it may also have optical portions other than the first optical portion and the second optical portion. The optical layer may be a single layer or a laminate of two or more layers. The optical layer preferably has a patterned layer. Furthermore, as shown in FIG. 3, the optical layer 1 may have a patterned layer 12 and a solid layer 11 in this order from the cured resin layer 2 side. The solid layer means a layer formed so as to cover the entire surface of the supporting substrate layer when viewed from the thickness direction. Furthermore, the patterned layer means a layer formed partially (particularly in a patterned manner) so as to cover part of the supporting substrate layer when viewed from the thickness direction.

[0025] (a) First optical unit and second optical unit The first optical portion and the second optical portion are arranged according to the pattern of the object to be shaped, and are adjacent to each other. Examples of the arrangement of the first optical portion and the second optical portion include a configuration in which the first optical portion and the second optical portion are arranged in parallel, a configuration in which a plurality of independent first optical portions are arranged and the second optical portion is arranged around the plurality of first optical portions, and a configuration in which a plurality of independent second optical portions are arranged and the first optical portion is arranged around the plurality of second optical portions. Specifically, when the pattern on the object to be shaped is a wood grain pattern, the first optical part is formed to correspond to independent characteristic parts such as vessels, knots, annual rings and spots of the wood grain, and the second optical part is formed to correspond to non-characteristic parts other than the above characteristic parts.

[0026] According to the present disclosure, the optical layer can be formed using inks with different compositions, allowing for the formation of an optical section with a fine pattern. When the pattern of the shaped object is a wood grain pattern, the size of the first optical section in the short-side direction can be, for example, 1000 μm or less, and can also be 500 μm or less. Note that, when the pattern of the shaped object is a wood grain pattern, the short-side direction refers to the direction (direction D2 in FIG. 2(a)) perpendicular to the direction corresponding to the direction in which the wood grain vessels extend (longitudinal direction, direction D1 in FIG. 2(a)). When the planar shape of the first optical section has a constriction, the width of the constriction is measured.

[0027] In the present disclosure, optical properties refer to one or more of light reflectivity, diffusion, transmittance, and absorbance. Hereinafter, the optical layer will be described in terms of an embodiment in which the first optical section and the second optical section have different light reflectivity (first embodiment), an embodiment in which the first optical section and the second optical section have different light diffusion properties (second embodiment), an embodiment in which the first optical section and the second optical section have different light transmittance (third embodiment), and an embodiment in which the second optical section has different light absorption properties (fourth embodiment). The light referred to above is light used in the preliminary curing process, and as described below, is light with a wavelength of more than 320 nm and not more than 400 nm. Among these, light with a wavelength of more than 320 nm and not more than 400 nm, using an LED light as a light source, is preferred.

[0028] When producing a shaped sheet, the above-mentioned curable resin composition is applied to an optical layer to form a coating layer, followed by a preliminary curing treatment, a first curing treatment, and a second curing treatment in this order. The preliminary curing treatment can impart appropriate viscosity to the curable resin composition, thereby suppressing sagging of the wrinkle structure formed by the subsequent first curing treatment. Therefore, the greater the cumulative amount of light irradiated onto the coating layer in the preliminary curing treatment, the more finely uneven the wrinkle structure formed.

[0029] (i) Differences due to light reflectivity (first aspect) In the optical layer of the first embodiment, the first optical portion and the second optical portion have different light reflectivities. Specifically, they have different reflectivities to light used in the preliminary curing treatment. With such an optical layer, the surface (first surface) of the cured resin layer opposite the optical layer has a first surface portion and a second surface portion with different surface shapes. The reason why the optical layer of the first embodiment affects the surface shape of the first surface of the cured resin layer will be explained using FIG. 3.

[0030] As shown in FIG. 3(a), in the optical layer of the first embodiment patterned with two inks (e.g., white and black inks) with different light reflectivities, light incident from the coating layer 2' side is reflected by the surface of the white pattern (first optical portion A1). The light incident from the coating layer 2' side is again absorbed by the coating layer, and preliminary curing progresses. As a result, the surface (first surface portion) of the cured resin layer above the white pattern (first optical portion A1) develops a finer, uneven wrinkled structure after excimer irradiation, resulting in a lower gloss appearance. On the other hand, because the black pattern (second optical portion) absorbs light, the coating layer does not absorb the reflected light, and the surface (second surface portion) of the cured resin layer above the black pattern (second optical portion) develops a coarser, uneven wrinkled structure, resulting in a glossier appearance than the first surface portion. In other words, a glossy matte finish is achieved that matches the underlying patterns (first optical portion and second optical portion).

[0031] When the first optical part and the second optical part are irradiated with light having a wavelength of more than 320 nm and not more than 400 nm with an intensity I from the coating layer side for a predetermined time, the reflectance of the first optical part for the above wavelength light is ρ r (%), and the reflectance of the second optical section for the above wavelength light is ρ r’ (%), the integrated light amount I absorbed by the coating layer on the first optical section t1 and the integrated light amount I absorbed by the coating layer on the second optical section t2 Ratio to (I t1 / I t2 ) becomes: I t1 / I t2 =((I+(Iρ r / 100)) / ((I+(Iρ r’ / 100))=(1+(ρ r / 100)) / (1+(ρ r’ / 100))

[0032] As will be shown in the examples below, the inventors of the present application have determined that, in order to cause a difference in the surface shape between the first surface portion and the second surface portion due to a difference in reflectance between the first optical portion and the second optical portion (specifically, to make the first surface portion have a wrinkled shape with fine irregularities and the second surface portion have a wrinkled shape with coarse irregularities), it is necessary to set the above-mentioned integrated light amount ratio I t1 / I t2That is, when the optical layer in the present disclosure is irradiated with light having a wavelength of more than 320 nm and not more than 400 nm from the cured resin layer side, the reflectance ρ of the first optical portion for the light having the wavelength longer than 320 nm and not more than 400 nm is preferably 1.1 or more. r , the reflectance ρ of the second optical unit for the above wavelength light r’ It is preferable that each of the following conditions be satisfied: (1+(ρ r / 100)) / (1+(ρ r’ / 100))≧1.1 (Formula 1)

[0033] The reflectance ρ of the first optical unit for the above wavelength light r , the reflectance ρ of the second optical unit for the above wavelength light r’ Each indicates the average value of the measurements taken at 20 locations. The reflectance is measured using an ultraviolet-visible-near-infrared spectrophotometer (Hitachi, Ltd., product name: UH-4150) in accordance with JIS K0115: 2004. When the dimensions of the first optical part or the second optical part are smaller than the measurement area, a sample of 10 cm x 10 cm or more is prepared so as to have the same layer structure as the optical part, and then the measurement is performed.

[0034] One method for adjusting the reflectance of the first optical unit and the second optical unit to satisfy the above formula 1 is to adjust the first optical unit and the second optical unit to different colors. It is preferable to set the type and amount of colorant to be blended so that the difference in optical properties between the first optical unit and the second optical unit is obtained.

[0035] 3(a), there is a method in which white ink and black ink are used to form the first optical portion A1 as a white portion and the second optical portion A2 as a black portion. In this case, the optical layer 1 may have, in this order from the side opposite to the cured resin layer 2, a solid layer 11 formed with white ink and a black pattern layer 12 formed with black ink. In addition to white ink and black ink, for example, light gray ink and dark gray ink can also be used.

[0036] Another method for increasing the reflectance of the first optical part is to blend a high-brightness pigment into the first optical part. In this case, as shown in Fig. 3(b), the optical layer 1 may have, from the side opposite the cured resin layer 2, a solid layer 11 containing a high-brightness pigment and a patterned layer 12, in this order. In this case, the solid layer is preferably a white solid layer.

[0037] (ii) Differences due to light diffusion (second aspect) In the optical layer of the second embodiment, the first optical portion and the second optical portion have different light diffusivities, specifically, different diffusivities for light used in the preliminary curing treatment.

[0038] As shown in FIG. 4(a) and FIG. 4(b), when the first optical portion A1 and the second optical portion A2 are irradiated with light having a wavelength of more than 320 nm and not more than 400 nm at an intensity I from the coating layer 2′ side, the diffusion coefficient of the first optical portion for the above wavelength light is ρ d (%), and the diffusion rate of the second optical section for the above wavelength light is ρ d’ (%), the integrated light amount I absorbed by the coating layer on the first optical section t1 and the integrated light amount I absorbed by the coating layer on the second optical section t2 Ratio to (I t1 / I t2 ) becomes: I t1 / I t2 =(2-(ρ d / 100)) / (2-(ρ d’ / 100))

[0039] For the same reason as described above, when light with a wavelength longer than 320 nm and equal to or shorter than 400 nm is irradiated from the cured resin layer side, the optical layer in this embodiment has a diffusivity ρ of the first optical portion for light with the wavelength longer than 320 nm and equal to or shorter than 400 nm. d , the diffusion coefficient ρ of the second optical part for the above wavelength light d’ It is preferable that each of the following conditions be satisfied: (2-(ρ d / 100)) / (2-(ρ d’ / 100))≧1.1 (Formula 2)

[0040] Diffusion coefficient ρ of the first optical unit for the above wavelength light d, the diffusion coefficient ρ of the second optical part for the above wavelength light d’ Each indicates the average value of the measurements taken at 20 locations. If the cured resin layer affects the diffusivity value, peel off the cured resin layer from the shaped sheet and measure the exposed optical layer. The diffusivity is measured using an ultraviolet-visible-near-infrared spectrophotometer (Hitachi, Ltd., product name: UH-4150) in accordance with JIS K0115:2004. When the dimensions of the first optical section or the second optical section are smaller than the measurement area, a sample of 10 cm x 10 cm or more is prepared so that it has the same layer structure as the optical section, and the measurement is performed using this sample. The diffusivity to be measured is selected to be either diffuse reflectance or diffuse transmittance depending on the embodiment described below.

[0041] As a method for adjusting the diffusivities of the first optical part and the second optical part so as to satisfy the above formula (2), a method of imparting a light diffusing function to the second optical part can be mentioned. Specifically, a method of forming irregularities on the surface of the second optical part using a matting agent to diffusely reflect incident light can be mentioned. In this case, as shown in FIG. 4(a), a patterned layer 12 containing a matting agent and a solid layer 11 may be provided in this order from the cured resin layer 2 side. The solid layer is preferably a white solid layer. When the second optical part includes a patterned layer 13 containing a matting agent, the diffusivity ρ of the second optical part can be adjusted. d’ increases, making it easier to satisfy the above formula 2. When this method is used, the diffuse reflectance is used as the diffusivity.

[0042] Another method for adjusting the relationship between the diffusivities of the first and second optical parts to fall within the above-mentioned range is to configure the second optical part to contain a transparent resin and light-diffusing particles such as resin beads or fillers, thereby diffusing light internally through diffuse reflection. In this case, as shown in FIG. 4(b), a patterned layer 12 containing light-diffusing particles and a solid layer 11 may be provided in this order from the cured resin layer 2 side. In this case, it is preferable that the solid layer and the patterned layer are transparent. By including a patterned layer 12 containing light-diffusing particles in the second optical part, the diffusivity ρ of the second optical part can be reduced. d’increases, making it easier to satisfy the above formula 2. When this method is used, the diffuse transmittance is used as the diffusivity.

[0043] (iii) Differences due to light transmittance (third aspect) In the optical layer of the third embodiment, the first optical part and the second optical part have different light transmittances. Specifically, they have different transmittances to the light used in the preliminary curing treatment. In this embodiment, the light used in the preliminary curing treatment is preferably irradiated from the side opposite to the cured resin layer of the shaped sheet.

[0044] As shown in FIG. 5, when the first optical part and the second optical part are irradiated with light having a wavelength of more than 320 nm and not more than 400 nm at an intensity I from the side opposite the cured resin layer of the shaped sheet (the side of the support base layer 3 in FIG. 5), the transmittance of the first optical part to the above wavelength light is τ (%), and the transmittance of the second optical part to the above wavelength light is τ' (%). The integrated light amount I absorbed by the coating layer on the first optical part is t1 and the integrated light amount I absorbed by the coating layer on the second optical section t2 Ratio to (I t1 / I t2 ) becomes: I t1 / I t2 =τ / τ'

[0045] For the same reasons as above, in the optical layer in this embodiment, the transmittance τ of the first optical portion for light of the above wavelength and the transmittance τ' of the second optical portion for light of the above wavelength preferably satisfy the following (Equation 3): τ / τ'≧1.1 (Equation 3)

[0046] The transmittance τ of the first optical unit for the above wavelength light and the transmittance τ' of the second optical unit for the above wavelength light each represent the average value of measurements taken at 20 locations. If the cured resin layer affects the transmittance value, the cured resin layer is peeled off from the shaped sheet and the measurement is performed on the exposed optical layer. The transmittance is measured using an ultraviolet-visible-near-infrared spectrophotometer (manufactured by Hitachi, Ltd., product name: UH-4150) in accordance with JIS K0115:2004. If the dimensions of the first optical unit or the second optical unit are smaller than the measurement area, a sample of 10 cm x 10 cm or more is prepared to have the same layer structure as the optical unit, and the measurement is performed.

[0047] One method for adjusting the transmittance of the first optical part and the second optical part so as to satisfy the above formula (3) is to adjust the composition of the ink for the first optical part and the second optical part. For example, the transmittance of the ink can be adjusted by adjusting the amount of absorbent contained in the ink for light with a wavelength of more than 320 nm and not more than 400 nm.

[0048] In this embodiment, the supporting substrate layer disposed on the side of the optical layer opposite to the cured resin layer is preferably transparent.

[0049] (iv) Differences due to light absorption (fourth aspect) In the optical layer of the fourth embodiment, the first optical portion and the second optical portion have different light absorption properties, specifically, different absorption properties for the light used during pre-curing.

[0050] As shown in FIG. 6, when the first optical unit A1 and the second optical unit A2 are irradiated with light having a wavelength longer than 320 nm and shorter than or equal to 400 nm at an intensity I, the absorbance of the first optical unit for the light of the wavelength is A (%), and the absorbance of the second optical unit for the light of the wavelength is A' (%). The integrated light amount I absorbed by the coating layer on the first optical unit is t1 and the integrated light amount I absorbed by the coating layer on the second optical section t2 Ratio to (I t1 / I t2 ) becomes: I t1 / I t2 =(2-(A / 100)) / (2-(A' / 100))

[0051] For the same reasons as above, in the optical layer in this embodiment, it is preferable that the absorptance A of the first optical portion for light of the above wavelength and the absorptance A' of the second optical portion for light of the above wavelength each satisfy the following (Equation 4). (2-(A / 100)) / (2-(A' / 100))≧1.1 (Equation 4)

[0052] The absorptance A of the first optical unit for the above wavelength light and the absorptance A' of the second optical unit for the above wavelength light each represent the average of measurements taken at 20 locations. If the cured resin layer affects the absorptance value, the cured resin layer is peeled off from the shaped sheet and the measurement is performed on the exposed optical layer. The absorptance is measured using an ultraviolet-visible-near-infrared spectrophotometer (manufactured by Hitachi, Ltd., product name: UH-4150) in accordance with JIS K0115:2004. If the dimensions of the first optical unit or the second optical unit are smaller than the measurement area, a sample of 10 cm x 10 cm or more is prepared to have the same layer structure as the optical unit, and the measurement is performed.

[0053] As a method for adjusting the absorbance of the first optical part and the second optical part so as to satisfy the above formula (4), for example, a method of blending a light absorbing agent only in the second optical part can be mentioned.

[0054] (b) Material The material of the optical layer (first optical portion A1 and second optical portion A2) is not particularly limited as long as it is a material that differs in any of the above optical properties.

[0055] The optical layer may contain a binder resin. The binder resin is not particularly limited, and examples thereof include urethane resin, acrylic polyol resin, acrylic resin, ester resin, amide resin, butyral resin, styrene resin, urethane-acrylic copolymer, vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-vinyl acetate-acrylic copolymer resin, chlorinated propylene resin, nitrocellulose resin, and cellulose acetate resin. Various resins may also be used, such as one-component curing resins and two-component curing resins containing a curing agent such as an isocyanate compound.

[0056] The optical layer may contain a colorant depending on the embodiment. Examples of colorants include inorganic pigments such as titanium dioxide, carbon black, and iron oxide, organic pigments such as phthalocyanine blue, and various dyes. The optical layer may also contain a luster pigment depending on the embodiment. Examples of luster pigments include aluminum, nickel, chromium, tin, copper, silver, platinum, gold, stainless steel, and glass flakes.

[0057] The optical layer may contain particles depending on the embodiment. Examples of particles include those that function as matting agents or light diffusing particles as described above. Examples include inorganic particles and synthetic resin particles. Examples of inorganic particles include silica, alumina, calcium carbonate, magnesium carbonate, calcium sulfate, barium sulfate, and kaolin. Examples of synthetic resin particles include acrylic beads, urethane beads, nylon beads, silicone beads, silicone rubber beads, polycarbonate beads, and polyolefin wax (e.g., polypropylene wax, polyethylene wax). The average particle size of the particles is appropriately selected depending on the embodiment, but is preferably 1 μm or more and 10 μm or less. Examples of the particle shape include spherical, plate-like, scaly, and amorphous.

[0058] The optical layer may contain a light absorbing agent depending on the embodiment. The light absorbing agent is only required to absorb light of the above wavelengths, and does not necessarily have an absorption peak within the above wavelength range. The light absorbing agent is not particularly limited, and examples thereof include indole-based absorbers, triazine-based absorbers, and benzotriazole-based absorbers.

[0059] 2. Cured resin layer 1, the cured resin layer 2 in the present disclosure has a surface (first surface) S1 opposite to the optical layer 1 and a surface (second surface) S2 on the optical layer 1 side. The surface S1 (first surface S1) of the cured resin layer 2 opposite to the optical layer 1 has a surface shape with a wrinkle structure and is oriented in the thickness direction D. T When viewed from the side, the surface shape of the first surface portion S11 overlapping with at least a part of the first optical portion A1 is different from the surface shape of the second surface portion S12 overlapping with at least a part of the second optical portion A2. Hereinafter, the surface shape of the first surface of the cured resin layer may be referred to as a specific surface shape.

[0060] The shaped sheet of the present disclosure preferably has a cured resin layer as the outermost layer, and the outermost surface of the shaped sheet preferably has the above-mentioned specific surface shape.

[0061] In addition, the shaped sheet has a surface shape in which the first surface S1 of the cured resin layer has a wrinkled structure. The wrinkled structure exhibits a matte effect. Therefore, the shaped sheet of the present disclosure can impart a surface shape that exhibits a matte effect to the object to be shaped.

[0062] (a) Shape of wrinkle structure The wrinkle structure is a structure including a streak-like uneven structure. The wrinkle structure includes, for example, at least one of streak-like convex portions and streak-like concave portions. At least one of the streak-like convex portions and streak-like concave portions has an irregular shape and is irregularly arranged in a planar view. The wrinkle structure may include a plurality of curved streak-like convex portions and a concave portion formed by being surrounded by the plurality of convex portions. The wrinkle structure may also include a plurality of curved streak-like concave portions and a convex portion formed by being surrounded by the plurality of concave portions. "Curved" means that, in a planar view, the extension direction of one streak-like convex portion or concave portion has an inverted portion where it is reversed from one side to the other. The wrinkle structure may include meandering streak-like convex portions and a concave portion formed by being surrounded by the meandering streak-like convex portions. The wrinkle structure may also include meandering streak-like concave portions and a convex portion formed by being surrounded by the meandering streak-like concave portions. "Meandering" means that, in a planar view, one streak-like convex or concave portion includes two or more inverted portions, and the extension directions of the convex or concave portions are reversed in opposite directions in two adjacent inverted portions of one convex or concave portion.

[0063] (b) First surface portion and second surface portion The cured resin layer in the present disclosure has a thickness in the thickness direction D TThe optical layer has a first surface portion S11 overlapping at least a portion of a first optical portion A1 in the optical layer (described later) and a second surface portion S12 overlapping at least a portion of a second optical portion A2. The wrinkle structure is formed over the entire first and second surface portions, but in the present disclosure, the surface shape of the first surface portion S11 is different from the surface shape of the second surface portion S12. Note that "the surface shape of the first surface portion S11 is different from the surface shape of the second surface portion S12" means that the concave-convex shape of the wrinkle structure forming the surface shape of the first surface portion S11 is different from the concave-convex shape of the wrinkle structure forming the surface shape of the second surface portion S12, and when the value of the average length RSm of the curved elements in the first surface portion S11 is RSm1 and the value of the average length RSm of the curved elements in the second surface portion S12 is RSm2, the ratio (RSm2 / RSm1) of RSm2 to RSm1 is 1.5 or greater. The first surface portion and the second surface portion do not include any region where the wrinkle structure is not formed. Furthermore, when the optical layer has other optical portions such as a third optical portion and a fourth optical portion, the first surface of the cured resin layer has a surface portion that overlaps with at least a portion of each of these optical portions, and it is preferable that these surface portions have different surface shapes from the first surface portion or the second surface portion.

[0064] The cured resin layer includes a first surface portion and a second surface portion having different surface shapes due to a wrinkle structure, which results in a difference in the matte effect exhibited by the first surface portion and the matte effect exhibited by the second surface portion. A shaped sheet having such a cured resin layer can be shaped into a surface shape that can exhibit a glossy matte feel.

[0065] When viewed from the thickness direction, the first surface portion S11 overlaps with at least a part of the first optical portion A1, and the second surface portion S12 overlaps with at least a part of the second optical portion A2. For example, in FIG. T 1(b), the first surface portion S11 overlaps the entire first optical portion A1, and the second surface portion S12 overlaps the entire second optical portion A2. TWhen viewed from the front, the first surface portion S11 overlaps with a part of the first optical portion A1, and the second surface portion S12 overlaps with a part of the second optical portion A2.

[0066] The area of ​​the region R1 of the first surface portion overlapping with the first optical portion A1 relative to the area of ​​the first optical portion A1 is, for example, 50% or more, or may be 60% or more, or 80% or more. On the other hand, the area of ​​the region R1 of the first surface portion is, for example, 100% or less, or may be 90% or less. Similarly, the second surface portion is a region overlapping with at least a portion of the second optical portion. When viewed in the thickness direction, the area of ​​the region R2 of the second surface portion overlapping with the second optical portion A2 relative to the area of ​​the second optical portion is, for example, 50% or more, or may be 60% or more, or may be 80% or more. On the other hand, the area of ​​the region R2 of the second surface portion is, for example, 100% or less, or may be 90% or less.

[0067] (i) RSm (average length of curved elements) The average length RSm of the curved elements in the first surface portion S11 of the cured resin layer, as specified in JIS B0601:2013, is defined as RSm1. The average length RSm of the curved elements in the second surface portion S12 is defined as RSm2. The average length RSm of the curved elements is a horizontal parameter of the profile curve and is the average length of the profile curve elements over a reference length. The smaller RSm, the more likely it is that the vertices of the convex portions in the wrinkle structure of the surface shape are densely packed.

[0068] The ratio of RSm2 to RSm1 (RSm2 / RSm1) is, for example, 1.5 or more, or may be 1.6 or more, or may be 1.7 or more, or may be 1.8 or more. On the other hand, the ratio of RSm2 to RSm1 (RSm2 / RSm1) is, for example, 2.5 or less, or may be 2.0 or less, or may be 1.8 or less.

[0069] In this specification, the cutoff value for measuring Rsm1 and Rsm2 is 0.8 mm. Furthermore, in this specification, Rsm1 and Rsm2 are average values ​​of measurements taken at any 10 points within the first optical portion and the second optical portion, respectively.

[0070] By setting the value of RSm2 / RSm1 to 1.5 or more, the difference between the shape of the wrinkle structure in the first surface portion A1 and the shape of the wrinkle structure in the second surface portion A2 can be increased. This shaped sheet can produce an article in which the area where the surface shape of the first surface portion is formed and the area where the surface shape of the second surface portion is formed appear to have different degrees of matte. In other words, the shaped sheet of the present disclosure can form a surface shape that can exhibit a glossy matte feel in the same plane.

[0071] RSm1 and RSm2 may be 100 μm or less, 70 μm or less, or 50 μm or less, respectively, while RSm1 and RSm2 may be 20 μm or more, or 30 μm or more, respectively.

[0072] (ii) Ra (arithmetic mean roughness) The arithmetic mean roughness Ra of the first surface portion S11 of the cured resin layer is defined as Ra1. The arithmetic mean roughness Ra of the second surface portion S12 is defined as Ra2. Ra1 and Ra2 may each be 2.5 μm or less, or 2.0 μm or less. The arithmetic mean roughness Ra is a parameter in the height direction of a profile curve defined in JIS B0601:2013, and is the average value of the height difference from the average plane of the profile curve over a reference length. The larger the value of the arithmetic mean roughness Ra, the greater the tendency for the convex portions of the wrinkle structure of the surface shape and the height difference of the concave portions formed accordingly.

[0073] The above Ra1 and Ra2 are, for example, 0.5 μm or more, and may be 1.0 μm or more.

[0074] In this specification, the cutoff value for measuring Ra (arithmetic mean roughness) is 0.8 mm. Furthermore, in this specification, the Ra (arithmetic mean roughness) is the average value of measurements taken at any 10 points.

[0075] (iii) Rz (maximum height) The value of the maximum height Rz of the first surface portion S11 of the cured resin layer is defined as Rz1. The value of the maximum height Rz of the second surface portion S12 is defined as Rz2. Rz1 and Rz2 may each be 15.0 μm or less, or 10.0 μm or less. The maximum height Rz is one of the profile peak and height parameters defined in JIS B0601:2013, and is the sum of the height of the highest peak and the depth of the deepest valley in the profile curve over a reference length. The larger the Rz (maximum height) value, the more likely there are convex portions with large (high) shapes as viewed from the valleys (concave portions), and this indicates a tendency for a large number of such convex portions to be present. Therefore, when Rz (maximum height) is within the above range, the variation in the height of the convex portions is reduced, resulting in a uniform matte effect.

[0076] The above Rz1 and Rz2 are, for example, 5.0 μm or more, and may be 6.0 μm or more.

[0077] In this specification, the cutoff value for measuring Rz (maximum height) is 0.8 mm. Furthermore, in this specification, Rz (maximum height) is the average value of measurements taken at any 10 points.

[0078] (iv) 60° gloss value The surface of the cured resin layer opposite the optical layer has a wrinkled structure, thereby exhibiting an excellent matte effect. The term "matte" means that the gloss is difficult to visually recognize, resulting in a low gloss. The 60° gloss values ​​of the first surface portion and the second surface portion of the cured resin layer are preferably 10.0 or less, more preferably 8.0 or less, and even more preferably 6.0 or less. Meanwhile, the 60° gloss may be, for example, 1.0 or more, or 2.0 or more.

[0079] In this specification, the 60° gloss value refers to the 60° specular gloss defined in "Method 3" of JIS Z8741:1997. The 60° gloss value is measured using a gloss meter. For example, a BYK-Gardner micro-gloss gloss meter may be used as the gloss meter. The 60° gloss value of the first surface portion is the average of measurements taken at 10 arbitrary locations on the first surface portion. The 60° gloss value of the second surface portion is the average of measurements taken at 10 arbitrary locations on the second surface portion. Note that at each measurement location, the first or second surface portion is located at the center of the measurement location of the gloss meter, and measurements are taken so that 50% or more of the area of ​​the measurement location overlaps with the first or second surface portion.

[0080] When the wrinkle structure forming the surface shape of the first surface portion of the cured resin layer is finer than the wrinkle structure forming the surface shape of the second surface portion, the first surface portion has a greater matte effect than the second surface portion. However, because the 60° gloss value is strongly affected by the optical layer, the 60° gloss value of the first surface portion may be higher than that of the second surface portion.

[0081] (c) Material of the cured resin layer The cured resin layer is preferably a cured product of a curable resin composition. By forming the cured resin layer from a cured product of a curable resin composition, it is easy to form a cured resin layer having a specific surface shape.

[0082] The curable resin composition used to form the cured resin layer may be any composition containing a resin that becomes a cured product upon curing. Examples of the curable resin composition include compositions that can form a specific surface shape upon curing with ionizing radiation.

[0083] (i) Resin The resin contained in the curable resin composition is preferably an ionizing radiation curable resin, since this makes it easier to form a specific surface shape.

[0084] The ionizing radiation-curable resin is a resin having an ionizing radiation-curable functional group, which is a group that crosslinks and cures upon irradiation with ionizing radiation. Preferred examples of the ionizing radiation-curable functional group include functional groups having an ethylenic double bond, such as a (meth)acryloyl group, a vinyl group, and an allyl group.

[0085] The term "(meth)acryloyl group" refers to an acryloyl group or a methcroyl group, and the term "(meth)acrylate" refers to an acrylate or a methacrylate.

[0086] Furthermore, ionizing radiation refers to electromagnetic waves or charged particle beams that have an energy quantum capable of polymerizing or crosslinking molecules. Typically, ultraviolet (UV) rays or electron beams (EB) are used, but it also includes other electromagnetic waves such as X-rays and gamma rays, and charged particle beams such as alpha rays and ion beams.

[0087] Examples of the ionizing radiation curable resin include electron beam curable resins and ultraviolet curable resins. Specifically, the ionizing radiation curable resin can be appropriately selected from polymerizable monomers and polymerizable oligomers that have conventionally been used as ionizing radiation curable resins.

[0088] The polymerizable monomer is preferably a (meth)acrylate monomer having a radically polymerizable unsaturated group in the molecule, and particularly preferably a polyfunctional (meth)acrylate monomer. Examples of the polyfunctional (meth)acrylate monomer include a (meth)acrylate monomer having two or more ionizing radiation-curable functional groups in the molecule, and having at least a (meth)acryloyl group as the ionizing radiation-curable functional group.

[0089] In order to stabilize wrinkle formation and stably improve the matte effect, the number of functional groups of the polyfunctional (meth)acrylate monomer is preferably 2 to 8, more preferably 2 to 6. Furthermore, with the above number of functional groups, a wrinkle structure is easily obtained. These polyfunctional (meth)acrylates may be used alone or in combination of two or more.

[0090] The polymerizable monomers can be used alone or in combination of two or more, and it is preferable to use two or more polymerizable monomers in combination, which makes it easier to obtain a specific surface shape.

[0091] When two or more polymerizable monomers are used in combination, a combination of a monofunctional monomer and a polyfunctional monomer, or a combination of two or more polyfunctional monomers is preferred, and a combination of a polyfunctional monomer and a polyfunctional monomer is more preferred.

[0092] When a polyfunctional monomer is used, the number of functional groups is preferably 2 or more. The number of functional groups is preferably 8 or less, more preferably 6 or less, and even more preferably 4 or less.

[0093] When a monofunctional monomer and a polyfunctional monomer are used in combination, the number of functional groups in the polyfunctional monomer is most preferably 2 or less. That is, the number of functional groups in the polyfunctional monomer is most preferably 2. In this case, the monofunctional monomer and the polyfunctional monomer are preferably (meth)acrylate monomers.

[0094] Furthermore, when two or more types of polyfunctional monomers are used, it is most preferable to combine a monomer having two functional groups with a monomer having four functional groups. In this case, the polyfunctional monomer is preferably a (meth)acrylate monomer.

[0095] Examples of polymerizable oligomers include (meth)acrylate oligomers having two or more ionizing radiation-curable functional groups in the molecule, and having at least a (meth)acryloyl group as the ionizing radiation-curable functional group, such as urethane (meth)acrylate oligomers, epoxy (meth)acrylate oligomers, polyester (meth)acrylate oligomers, polyether (meth)acrylate oligomers, polycarbonate (meth)acrylate oligomers, and acrylic (meth)acrylate oligomers.

[0096] Other polymerizable oligomers include highly hydrophobic polybutadiene (meth)acrylate oligomers having (meth)acrylate groups in the side chains of polybutadiene oligomers, silicone (meth)acrylate oligomers having polysiloxane bonds in the main chain, aminoplast resin (meth)acrylate oligomers obtained by modifying aminoplast resins having many reactive groups in their small molecules, and oligomers having cationically polymerizable functional groups in the molecules of novolac epoxy resins, bisphenol epoxy resins, aliphatic vinyl ethers, aromatic vinyl ethers, etc.

[0097] In order to stabilize wrinkle formation and stably improve the matte effect, urethane (meth)acrylate oligomers, epoxy (meth)acrylate oligomers, polyester (meth)acrylate oligomers, polyether (meth)acrylate oligomers, polycarbonate (meth)acrylate oligomers, and acrylic (meth)acrylate oligomers are preferred, with urethane (meth)acrylate oligomers and polycarbonate (meth)acrylate oligomers being more preferred, and urethane (meth)acrylate oligomers being even more preferred.

[0098] The polymerizable oligomers can be used alone or in combination of two or more kinds, and it is preferable to use one kind of polymerizable oligomer alone.

[0099] In order to stabilize wrinkle formation and stably improve the matte effect, the number of functional groups of the polymerizable oligomer is preferably 2 or more and 8 or less, more preferably 2 or more and 6 or less, and even more preferably 2 or more and 4 or less.

[0100] For the same purpose as above, the weight average molecular weight of the polymerizable oligomer is preferably 2,500 or more and 7,500 or less, more preferably 3,000 or more and 7,000 or less, and even more preferably 3,500 or more and 6,000 or less.

[0101] Here, the weight average molecular weight is an average molecular weight measured by GPC analysis and converted into standard polystyrene.

[0102] The resin may be a combination of a polymerizable oligomer and a polymerizable monomer. In this case, the polymerizable oligomer is preferably a polyfunctional urethane (meth)acrylate oligomer, more preferably a polyfunctional urethane acrylate oligomer. The polymerizable monomer is preferably a polyfunctional polymerizable monomer, more preferably a polyfunctional (meth)acrylate monomer, and even more preferably a polyfunctional acrylate monomer. This can also stabilize wrinkle formation and stably improve the matte effect.

[0103] When a polymerizable oligomer and a polymerizable monomer are used in combination, the content of the polymerizable oligomer relative to 100 parts by mass of the total of the polymerizable oligomer and the polymerizable monomer is preferably 40 parts by mass or more, more preferably 50 parts by mass or more, even more preferably 55 parts by mass or more, and still more preferably 60 parts by mass or more. The content of the polymerizable oligomer is preferably 90 parts by mass or less, more preferably 80 parts by mass or less, and even more preferably 70 parts by mass or less.

[0104] Furthermore, polymerizable oligomers can be used in combination, and it is preferable to use a combination of two polymerizable oligomers with different numbers of functional groups. In this case, the content of the polymerizable oligomer with the larger number of functional groups per 100 parts by mass of the total amount of polymerizable oligomers is preferably 50 parts by mass or more, more preferably 55 parts by mass or more, even more preferably 60 parts by mass or more, and still more preferably 65 parts by mass or more.

[0105] (ii) Other ingredients (Anti-wrinkle agent) The cured resin layer in the present disclosure may or may not include a wrinkle stabilizer.

[0106] When the cured resin layer contains a wrinkle formation stabilizer, wrinkles can be stably formed on the surface of the cured resin layer. Although a wrinkle structure can be formed on the cured resin layer without using the wrinkle formation stabilizer, the use of the wrinkle formation stabilizer stabilizes the formed wrinkle structure, thereby imparting a stable matte effect and uniformity of the surface state due to the stable formation of wrinkles over the entire surface of the cured resin layer.

[0107] "Wrinkle formation stabilization" means that the in-plane distribution (variance σ) of wrinkle shape and wrinkle geometric characteristic values ​​(length, width, and length-to-width ratio of individual protrusions) and wrinkle surface properties (Ra, Rz, RSm, Spc, etc.) converges when a wrinkle formation stabilizer is added compared to when no additive is added. This also results in the in-plane distribution (variance σ) of the 60° gloss value of the surface shape converging. Wrinkle formation stabilizers are added not to diffuse light, suppress light reflection, or to matte the surface, but to stabilize the wrinkle structure.

[0108] Therefore, even if the so-called "matting agents" in the prior art and the "wrinkle formation stabilizers" in the present disclosure have the same or similar constituent substances and average particle diameters, they differ in the mechanisms (actions) of light reflection suppression and matting, the structures for achieving light reflection suppression and matting, and the relationship between the amount used and the degree of surface gloss (gloss value).

[0109] In conventional technology, matting agents used for light reflection suppression and matting exhibit anti-glare and matting effects by themselves due to the light diffusion effect resulting from their physical shape. Specifically, particles commonly referred to as matting agents generally have a refractive index difference between the particles and the surrounding resin and air, and exhibit anti-glare and matting effects due to the light diffusion effect caused by the reflection of light rays corresponding to the particle's contour shape and the refractive interface. Therefore, if a matting agent is used in a cured resin layer, external light (incident light) will be diffused by the matting agent, resulting in a decrease in contrast.

[0110] On the other hand, the wrinkle formation stabilizer does not exhibit an anti-glare effect or a matte effect by light diffusion due to reflection and refraction of light rays by the particles themselves, but stabilizes the formation of wrinkles on the surface of the cured resin layer due to the wrinkle formation stabilizer, and imparts a stable matte effect to the sheet due to the light diffusion effect at the refractive index difference interface between the surface and air. Therefore, the wrinkle formation stabilizer used in the present disclosure differs from a matting agent that exhibits a matte effect by itself in terms of the mechanisms (actions) of light reflection suppression and matte, and the structures for exhibiting light reflection suppression and matte, etc. (even if the constituent substances and average particle diameters of both are the same or similar).

[0111] Furthermore, the relationship between the content of a "wrinkle formation stabilizer" and a "matt agent" also differs in terms of the surface gloss value. When the same substance A is used as a wrinkle formation initiator AW (W: wrinkle), and a specific amount C is added to form wrinkles on the surface, the 60° gloss value G of the surface is 60° AW (C) is the 60° gloss value G of the surface when the same substance A is used simply as a matting agent AM and is contained in a specific amount C, but no wrinkles are formed on the surface. 60° AM (C) is clearly lower than (C). In other words, the following relationship holds: G 60° AW (C) <G 60° AM (C)

[0112] The wrinkle formation stabilizer is not a matting agent, and specifically, any agent having an average particle size up to the smaller of 100% or less of the thickness of the cured resin layer or 30 μm or less can be used without any particular restrictions.

[0113] Here, the average particle size of particles such as wrinkle formation stabilizers refers to the average particle size (arithmetic mean diameter) measured for 100 randomly selected non-aggregated particles when a cross section of a cured resin layer in the thickness direction is observed using a scanning electron microscope (SEM) at an acceleration voltage of 3.0 kV and a magnification of 50,000. The particle size is the value measured by sandwiching the cross section of the particle between two arbitrary parallel lines and measuring the distance between the two lines that is the longest.

[0114] As the wrinkle formation stabilizer, for example, organic particles or inorganic particles can be used. Examples of organic substances constituting the organic particles include polymethyl methacrylate, acrylic-styrene copolymer resin, melamine resin, polycarbonate, polystyrene, polyvinyl chloride resin, benzoguanamine-melamine-formaldehyde condensate, silicone, fluorine-based resin, and polyester-based resin. Examples of inorganic substances constituting the inorganic particles include silica, alumina, calcium carbonate, aluminosilicate, and barium sulfate. To improve the strength of the cured resin layer, it is preferable to use inorganic particles.

[0115] The shape of the wrinkle formation stabilizer is not particularly limited, but examples thereof include spherical, polyhedral, scaly, and amorphous shapes.

[0116] When silica is used as a wrinkle formation stabilizer, it is preferable that the specific surface area measured by the BET method using nitrogen adsorption is small, as this suppresses light diffusion. 2 / g or more 800m 2 / g or less, and 100m 2 / g or more 500m 2 It is more preferable that the saturation coefficient is 1 / g or less.

[0117] Similarly, a small oil absorption is preferable because it suppresses light diffusion. The oil absorption is preferably 700 ml / 100 g or less, and more preferably 600 ml / 100 g or less. Here, the oil absorption is determined by the method described in JIS K6217-4 "Determination of oil absorption."

[0118] The surface of the wrinkle formation stabilizer may be coated with an organic compound to suppress light diffusion. For a matte effect, it is preferable to use at least one of two types of wrinkle formation stabilizers distinguished by their average particle diameter, with the wrinkle formation stabilizer having an average particle diameter of either 100% or less of the thickness of the cured resin layer or 30 μm or less, whichever is smaller. Specifically, the two types of wrinkle formation stabilizers are a first wrinkle formation stabilizer having an average particle diameter of 1 μm or more and an upper limit of either 100% or less of the thickness of the cured resin layer or 30 μm or less, whichever is smaller, and a second wrinkle formation stabilizer having an average particle diameter of less than 1 μm. The use of at least one of the two types of wrinkle formation stabilizers stabilizes wrinkle formation, resulting in a stable and excellent matte effect.

[0119] The average particle size of the first wrinkle formation stabilizer is 1 μm or more, with an upper limit of either 100% or less of the thickness of the cured resin layer or 30 μm or less, whichever is smaller. To stably improve the matte effect, the average particle size of the first wrinkle formation stabilizer is preferably 1.3 μm or more, more preferably 1.5 μm or more, and even more preferably 1.8 μm or more. Furthermore, the average particle size of the first wrinkle formation stabilizer, relative to the thickness of the cured resin layer, is preferably 90% or less of the thickness of the cured resin layer, more preferably 80% or less of the thickness of the cured resin layer, and even more preferably 70% or less of the thickness of the cured resin layer. Furthermore, the absolute value of the average particle size of the first wrinkle formation stabilizer is preferably 20 μm or less, more preferably 10 μm or less, even more preferably 8 μm or less, and even more preferably 7 μm or less. The average particle size of the first wrinkle formation stabilizer may be the smaller of any combination of the upper limit relative to the thickness of the cured resin layer and the upper limit of the absolute value. For example, the upper limit may be the smaller of 90% or less of the thickness of the cured resin layer or 20 μm or less, or the upper limit may be the smaller of 90% or less of the thickness of the cured resin layer or 10 μm or less. The thickness of the cured resin layer will be described later.

[0120] The second wrinkle-formation stabilizer has an average particle size of less than 1 μm. To stabilize wrinkle formation and stably improve the matte effect, the second wrinkle-formation stabilizer has an average particle size of preferably 1 nm or more, more preferably 3 nm or more, and even more preferably 5 nm or more. The second wrinkle-formation stabilizer has an average particle size of preferably 900 nm or less, more preferably 700 nm or less, and even more preferably 500 nm or less.

[0121] To stabilize wrinkle formation by the wrinkle formation stabilizer and stably improve the matte effect, the content of the wrinkle formation stabilizer (when a first wrinkle formation stabilizer and a second wrinkle formation stabilizer are used in combination, the total content of these) is preferably 0.5 parts by mass or more, more preferably 0.75 parts by mass or more, even more preferably 1.0 parts by mass or more, and even more preferably 1.2 parts by mass or more, relative to 100 parts by mass of the resin. Furthermore, the upper limit of the content of the wrinkle formation stabilizer is not particularly limited, but, for example, to improve the coatability of the resin composition and efficiently improve the matte effect, it is preferably 25.0 parts by mass or less, more preferably 15.0 parts by mass or less, even more preferably 10.0 parts by mass or less, particularly preferably 7.5 parts by mass or less, and most preferably 6.0 parts by mass or less, relative to 100 parts by mass of the resin.

[0122] When a first wrinkle formation stabilizer and a second wrinkle formation stabilizer are used in combination, the contents of the first wrinkle formation stabilizer and the second wrinkle formation stabilizer are not particularly limited as long as the total content is within the above-mentioned range. Furthermore, the blending ratio of the first wrinkle formation stabilizer and the second wrinkle formation stabilizer, where the total amount of these is taken as 100 parts by mass, is preferably 0.0 parts by mass or more and 95 parts by mass or less, more preferably 10 parts by mass or more and 90 parts by mass or less, even more preferably 20 parts by mass or more and 80 parts by mass or less, and particularly preferably 30 parts by mass or more and 70 parts by mass or less.

[0123] As described above, organic particles and inorganic particles can be used as the wrinkle formation stabilizer, and it can be said that the types of these particles themselves include those that have been used as matting agents in the past. In order for the matting agent to exhibit a matte effect by itself due to the light diffusion effect caused by its physical shape, it needs to be used in large amounts. However, in the present disclosure, even if the content is small as described above, that is, even if the content is less than the content required for the matte agent to exhibit an anti-glare effect and a matte effect by itself due to the light diffusion effect caused by its physical shape, an extremely superior matte effect compared to the effect obtained by a matting agent can be obtained.

[0124] (Photopolymerization initiators and photopolymerization accelerators) When the resin is an ultraviolet-curable resin, the curable resin composition may contain a photopolymerization initiator, a photopolymerization accelerator, etc. In the present disclosure, it is preferable to contain a photopolymerization initiator having an absorption peak at a wavelength of more than 320 nm and not more than 400 nm, because this allows the effects of the preliminary curing treatment to be efficiently obtained.

[0125] Examples of the photopolymerization initiator include one or more selected from acetophenone, benzophenone, α-hydroxyalkylphenone, Michler's ketone, benzoin, benzil dimethyl ketal, benzoyl benzoate, α-acyloxime ester, thioxanthones, etc. The photopolymerization accelerator can reduce polymerization inhibition by air during curing and increase the curing rate. Examples of the photopolymerization accelerator include one or more selected from p-dimethylaminobenzoic acid isoamyl ester, p-dimethylaminobenzoic acid ethyl ester, etc.

[0126] The content of the photopolymerization initiator is preferably 0.1 parts by mass or more, more preferably 0.3 parts by mass or more, and even more preferably 0.5 parts by mass or more, per 100 parts by mass of the resin. The content of the photopolymerization initiator is preferably 5 parts by mass or less, more preferably 3 parts by mass or less, even more preferably 1.5 parts by mass or less, and particularly preferably 1.0 part by mass or less, per 100 parts by mass of the resin. When the content of the photopolymerization initiator is within the above range, the effect of using the photopolymerization initiator efficiently can be obtained. The content of the photopolymerization accelerator is the same as that of the photopolymerization initiator described above.

[0127] (additives) Since the shaped sheet of the present disclosure needs to be peeled off from the object to be shaped after shaping the object, it is preferable that the cured resin layer has releasability. From this perspective, it is preferable that the cured resin layer contains a release agent. Examples of the release agent include fluorine-based release agents and silicone-based release agents. The content of the release agent is, for example, 0.1 to 5 parts by mass, preferably 0.5 to 3 parts by mass, per 100 parts by mass of the resin. When the content of the release agent is within the above range, the effect of adding the release agent can be efficiently obtained.

[0128] (d) Thickness of the cured resin layer The thickness of the cured resin layer is not particularly limited as long as it is thick enough to form a specific surface shape, but considering ease of formation, it is preferably 1 μm or more, more preferably 3 μm or more. Furthermore, the thickness of the cured resin layer is preferably 100 μm or less, more preferably 50 μm or less. When the thickness of the cured resin layer is within the above range, the surface shape is likely to become a specific surface shape. Furthermore, when the thickness of the cured resin layer is within the above range, the cured resin layer is easily formed, and surface properties such as scratch resistance and strength are also easily obtained.

[0129] Here, the thickness of the cured resin layer is determined by measuring the thickness at 20 points on an image of the cross section of the sheet taken using a scanning electron microscope (SEM), and averaging the values ​​at 20 points. The SEM acceleration voltage is 5 kV, and the magnification is set according to the thickness. The same applies to the thicknesses of the other layers.

[0130] When the shaped sheet of the present disclosure further includes a support substrate layer as described below, the cured resin layer may be disposed partially or entirely on the sheet, and it is particularly preferred that the cured resin layer be disposed entirely on the sheet.

[0131] (e) Method for forming a cured resin layer For example, the cured resin layer may be formed by applying a curable resin composition to one side of the optical layer to form a coating layer, and then performing the following steps on the coating layer in this order: (1) a preliminary curing treatment by irradiating with light having a wavelength of more than 320 nm and less than 400 nm, (2) a first curing treatment by irradiating with light having a first wavelength of 100 nm or more and less than 200 nm, and (3) a second curing treatment by irradiating with at least one of an electron beam and light having a second wavelength of 200 nm or more and less than 400 nm. Details of each treatment are described below in "B. Method for manufacturing a shaped sheet."

[0132] 3. Other layers The shaped sheet of the present disclosure may have layers other than the optical layer and the cured resin layer, such as a support substrate layer, a primer layer, and a surface protection film layer.

[0133] (a) Supporting base material layer As shown in FIG. 7(a), the shaped sheet of the present disclosure may have a supporting substrate layer 3 on the side of the optical layer 1 opposite the cured resin layer 2. The supporting substrate layer is a member that supports the optical layer and the cured resin layer. By having the supporting substrate layer, the optical layer and the cured resin layer can be easily formed. Furthermore, by having the supporting substrate layer in the shaped sheet, various performances such as mechanical strength and post-processing suitability are improved, thereby improving usability as a sheet.

[0134] In this embodiment, the support substrate layer may be transparent or opaque. In particular, when the optical layer of the third embodiment is employed, the support substrate layer is preferably transparent. In this case, the support substrate layer preferably has a light transmittance of, for example, 90% or more, more preferably 92% or more. Here, the transmittance of the support substrate layer can be measured in accordance with JIS K7361-1.

[0135] Examples of the material for the support substrate layer include resin and glass. The resin constituting the base layer is not particularly limited, and examples thereof include olefin resins such as polyethylene, polypropylene, polymethylpentene, ionomers, and various olefin-based thermoplastic elastomers; vinyl chloride resins such as polyvinyl chloride, polyvinylidene chloride, and vinyl chloride-vinyl acetate copolymers; polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, ethylene glycol-terephthalic acid-isophthalic acid copolymers, and polyester-based thermoplastic elastomers; acrylic resins such as polymethyl (meth)acrylate, polyethyl (meth)acrylate, polybutyl (meth)acrylate, and methyl (meth)acrylate-butyl (meth)acrylate copolymers; polyamide resins typified by nylon 6 and nylon 66; cellulose resins such as cellulose triacetate, cellophane, and celluloid; styrene resins such as polystyrene, acrylonitrile-styrene copolymers, and acrylonitrile-butadiene-styrene copolymers (ABS resins); polyvinyl alcohol, ethylene-vinyl acetate copolymers, ethylene-vinyl alcohol copolymers, polycarbonate resins, polyarylate resins, and polyimide resins.

[0136] The thickness of the support substrate layer is not particularly limited, but is preferably, for example, 10 μm or more and 300 μm or less, more preferably 20 μm or more and 200 μm or less, and even more preferably 40 μm or more and 100 μm or less.

[0137] The supporting substrate layer may be subjected to a surface treatment to enhance adhesion with a layer in contact with the supporting substrate layer, for example, adhesion with an optical layer. Examples of surface treatments include physical surface treatments such as oxidation and roughening methods, and chemical surface treatments. Examples of oxidation methods include corona discharge treatment, chromium oxidation treatment, flame treatment, hot air treatment, and ozone-ultraviolet treatment. Examples of roughening methods include sandblasting and solvent treatment. These surface treatments are appropriately selected depending on the type of supporting substrate layer, but in consideration of the effect of the surface treatment and operability, corona discharge treatment is generally preferred.

[0138] (b) Primer layer The shaped sheet of the present disclosure may have a primer layer 4 to improve interlayer adhesion between the layers constituting the shaped sheet. As shown in Figure 7(b), the primer layer 4 may be disposed between the cured resin layer 2 and the optical layer 1.

[0139] The primer layer is mainly composed of a binder resin, and may contain additives as needed.

[0140] Binder resins include urethane resin, acrylic polyol resin, acrylic resin, ester resin, amide resin, butyral resin, styrene resin, urethane-acrylic copolymer, polycarbonate-based urethane-acrylic copolymer (carbonate bond in the polymer main chain). Examples of such resins include a polymer (polycarbonate polyol) having two or more hydroxyl groups at the terminal or side chain (urethane-acrylic copolymer), vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-vinyl acetate-acrylic copolymer resin, chlorinated propylene resin, nitrocellulose resin (nitrocellulose), cellulose acetate resin, etc. These may be used alone or in combination.

[0141] The binder resin may be a resin obtained by crosslinking and curing the above-mentioned resin with the addition of a curing agent such as an isocyanate-based curing agent or an epoxy-based curing agent. For example, a resin obtained by crosslinking and curing a polyol-based resin such as an acrylic polyol resin with an isocyanate-based curing agent is preferred, and a resin obtained by crosslinking and curing an acrylic polyol resin with an isocyanate-based curing agent is more preferred.

[0142] The thickness of the primer layer is preferably 0.5 μm or more, more preferably 1 μm or more, and even more preferably 2 μm or more, and is preferably 10 μm or less, more preferably 8 μm or less, and even more preferably 6 μm or less.

[0143] The primer layer can be formed by applying a resin composition, and then drying and curing it as necessary.

[0144] B. Manufacturing method of shaped sheet The present disclosure provides a method for producing the above-mentioned shaped sheet, which includes an optical layer formation step of forming an optical layer including the first optical portion and the second optical portion having different optical properties by applying two or more inks with different compositions, and a cured resin layer formation step of forming a coating layer by applying a curable resin composition to one side of the optical layer, and curing the coating layer by performing the following in this order on the coating layer: (1) a preliminary curing treatment by irradiating with light having a wavelength of more than 320 nm and not more than 400 nm, (2) a first curing treatment by irradiating with light having a first wavelength of 100 nm or more and less than 200 nm, and (3) a second curing treatment by irradiating with at least one of an electron beam and light having a second wavelength of 200 nm or more and not more than 400 nm, thereby forming the cured resin layer.

[0145] 1. Optical layer formation process In this step, two or more inks with different compositions are applied and dried as necessary to form an optical layer having a first optical portion and a second optical portion with different optical properties.

[0146] The compositions of the two or more inks are preferably adjusted so that the optical properties of the first optical portion and the second optical portion satisfy any one of the above formulas (1) to (4). The ink contains, for example, a binder resin, and may further contain one or more of the above-mentioned colorants, binder resins, particles, and light absorbers. The ink may contain, for example, a solvent (or dispersion medium).

[0147] Examples of the solvent (or dispersion medium) include petroleum-based organic solvents such as hexane, heptane, octane, toluene, xylene, ethylbenzene, cyclohexane, and methylcyclohexane; ester-based organic solvents such as ethyl acetate, butyl acetate, 2-methoxyethyl acetate, and 2-ethoxyethyl acetate; alcohol-based organic solvents such as methyl alcohol, ethyl alcohol, normal propyl alcohol, isopropyl alcohol, isobutyl alcohol, ethylene glycol, and propylene glycol; ketone-based organic solvents such as acetone, methyl ethyl ketone, methyl isobutyl ketone, and cyclohexanone; ether-based organic solvents such as diethyl ether, dioxane, and tetrahydrofuran; chlorine-based organic solvents such as dichloromethane, carbon tetrachloride, trichloroethylene, and tetrachloroethylene; and inorganic solvents such as water.

[0148] Examples of the coating method for forming the optical layer include various coating methods such as roll coating, knife coating, air knife coating, die coating, lip coating, comma coating, kiss coating, flow coating, and dip coating, and various printing methods such as gravure printing, offset printing, screen printing, flexographic printing, electrostatic printing, and inkjet printing.

[0149] 2. Cured resin layer formation process In this step, a curable resin composition is first applied to one side of the optical layer to form a coating layer. The curable resin composition is arranged so as to cover the first optical part and the second optical part of the optical layer. The curable resin composition is the same as that described in detail above in "A. Shaped Sheet."

[0150] Examples of methods for applying the curable resin composition include known methods such as gravure printing, bar coating, roll coating, reverse roll coating, and comma coating. The thickness of the applied layer can be the same as that of the cured resin layer. In addition, when the curable resin composition contains a solvent, the solvent may be dried after application.

[0151] Next, the coating layer is cured by irradiation with ionizing radiation to form a cured resin layer having a specific surface shape. First, the coating layer is subjected to a pre-curing treatment (1) by irradiating it with light having a wavelength longer than 320 nm and shorter than 400 nm. This pre-curing treatment pre-cures the entire coating layer, imparting an appropriate viscosity to the resin composition. This prevents the wrinkle structure formed by the irradiation treatment (2) described below from sagging, and allows the wrinkle structure to be better maintained.

[0152] The ultraviolet light used in the pre-curing treatment has a wavelength of more than 320 nm and not more than 400 nm, preferably 385 nm or more and not more than 400 nm (ultraviolet light). By using the above wavelength light (ultraviolet light) in the pre-curing treatment, the entire coating layer can be pre-cured efficiently.

[0153] The ultraviolet irradiance in the preliminary curing treatment is preferably 0.01 W / cm 2 More than 0.1 W / cm 2 More preferably, 0.3 W / cm 2 The ultraviolet irradiance is preferably 5 W / cm 2 Less than 3W / cm, preferably 3W / cm 2 Less than 2 W / cm, more preferably 2 When the ultraviolet irradiance is within the above range, the coating layer is not completely cured, and the entire coating layer can be efficiently pre-cured.

[0154] The wavelength light used in the preliminary curing treatment can be irradiated using an ultraviolet irradiation device that uses, for example, an ultra-high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc lamp, a black light fluorescent lamp, a metal halide lamp, an LED light, or the like as a light source. Among these, it is preferable to use an ultraviolet irradiation device that uses an LED light as a light source. Since light of a single wavelength can be irradiated, it is easy to form first and second surface portions with different surface shapes.

[0155] After the preliminary curing treatment, (2) a first curing treatment is performed by irradiating light with a first wavelength of 100 nm or more and less than 200 nm, and (3) a second curing treatment is performed by irradiating at least one of an electron beam and light with a second wavelength of 200 nm or more and 400 nm or less, in this order. By performing the first curing treatment and the second curing treatment, the surface shape is likely to become a specific surface shape.

[0156] Although the details of the mechanism by which irradiation in at least the first and second curing treatments makes it easier to obtain a surface shape having a wrinkled structure are unknown, it is presumed to be due to the following mechanism.

[0157] First, when the irradiation treatment with low-wavelength (short-wavelength) ultraviolet light described above is performed, the energy of the ultraviolet light penetrates only the surface portion, and the energy does not reach the layers below, so only the surface portion of the coating layer begins to harden, and it is thought that the wrinkle structure is formed by the hardening shrinkage that occurs only on the surface. In this way, it is thought that the formation of the wrinkle structure occurs when the coating layer is hardened only in a certain thickness direction from the surface by irradiation with low-wavelength (short-wavelength) ultraviolet light.

[0158] Subsequently, by carrying out the irradiation treatment using at least one of the electron beams and long wavelength (long wavelength) ultraviolet light of 200 nm or more and 400 nm or less as described in (3) above, it is possible to promote curing from the surface-near portion, where curing progresses slowly, to the deep portion away in the depth direction while maintaining the wrinkle structure formed on the surface of the coating layer.

[0159] Although the irradiation treatment (2) above can cure the coating layer throughout its entire thickness and become a cured resin layer, the cured state is improved by further combining it with the irradiation treatment (3) above. As a result, it is believed that a wrinkle structure appears on the surface of the cured resin layer. Furthermore, it is believed that the surface properties such as antifouling property, scratch resistance, and strength, as well as processability, are improved by curing the coating layer throughout its entire thickness and improving the cured state.

[0160] The first wavelength light having a wavelength of 100 nm or more and less than 200 nm used in the irradiation treatment (2) above is preferably "excimer light," which includes light in the ultraviolet wavelength range from excited dimers formed by discharge of rare gases such as Ar, Kr, Xe, and Ne, halides of rare gases such as halogens F, Cl, I, and Br, or mixed gases thereof. Examples of the wavelength of excimer light and the excimer used as the light source include light with a wavelength of 126 nm emitted from the excimer of Ar (hereinafter abbreviated as "126 nm (Ar)"), 146 nm (Kr), 157 nm (F), 172 nm (Xe), and 193 nm (ArF). While spontaneous emission light and highly coherent laser light due to stimulated emission can be used as the excimer light, spontaneous emission light is usually sufficient. Discharge lamps that emit these types of light (ultraviolet rays) are also called "excimer lamps."

[0161] Excimer light has a single wavelength peak and a narrower half-width wavelength than ordinary ultraviolet light (e.g., ultraviolet light emitted from metal halide lamps, mercury lamps, etc.). The use of such excimer light makes it easier to create wrinkle structures.

[0162] For the same reasons as above, the wavelength of the first wavelength light is preferably 120 nm or more, more preferably 140 nm or more, even more preferably 150 nm or more, and even more preferably 155 nm or more. The wavelength of the first wavelength light is less than 200 nm, and particularly preferably 172 nm (Xe2). Thus, to develop wrinkle structures, it is preferable to use light with a shorter wavelength, and it can be said that, among short-wavelength ultraviolet rays (wavelength: 280 nm or less), short-wavelength ultraviolet rays in the range of less than 200 nm are preferred.

[0163] The integrated light amount of the first wavelength light is preferably 1 mJ / cm 2 More preferably, 2 mJ / cm 2 More preferably, 5 mJ / cm 2 That is all. The upper limit of the cumulative light amount of the first wavelength light is not particularly limited. In order to reduce the number of lamps required for irradiating the first wavelength light and to take into consideration productivity such as improved production efficiency, the cumulative light amount of the first wavelength light is preferably 1,000 mJ / cm. 2 Less than or equal to 300 mJ / cm 2 or less, more preferably 100 mJ / cm 2 Below 10 mJ / cm, particularly preferably 2 The following is the result.

[0164] The ultraviolet irradiance is preferably 1 mW / cm 2 More than 5mW / cm 2 More preferably, 10 mW / cm 2 The ultraviolet irradiance is preferably 10 W / cm 2 Less than 3W / cm, preferably 3W / cm 2 Less than 1 W / cm, more preferably 2 In particular, when productivity is taken into consideration, the ultraviolet irradiance is 500 mW / cm 2 Less than 300mW / cm is preferable. 2 Less than 150 mW / cm is more preferable. 2 The following is even more preferred:

[0165] Furthermore, the oxygen concentration during irradiation with the first wavelength light is preferably lower, preferably 1,000 ppm or less, more preferably 750 ppm or less, even more preferably 500 ppm or less, and particularly preferably 300 ppm or less.

[0166] In the cured resin layer forming process, it is preferable to perform the irradiation treatment with the first wavelength light of 100 nm or more and less than 200 nm described above (2) followed by the irradiation treatment with at least one of the electron beam and the second wavelength light of 200 nm or more and 400 nm described above (3).

[0167] The electron beam irradiation conditions employed in the irradiation treatment (3) above are not particularly limited as long as they cure the resin composition. The electron beam acceleration voltage is preferably 10 kV or more, more preferably 30 kV or more, even more preferably 50 kV or more, and even more preferably 75 kV or more. The electron beam acceleration voltage is preferably 300 kV or less, more preferably 250 kV or less, and even more preferably 200 kV or less. When the electron beam acceleration voltage is within the above range, the cured product is likely to retain the shape of the wrinkle structure. Furthermore, surface properties such as scratch resistance and strength, as well as processability, are improved. For the same reasons as above, the electron beam irradiation dose is preferably 5 kGy or more, more preferably 10 kGy or more, and even more preferably 15 kGy or more. The electron beam irradiation dose is preferably 150 kGy or less, more preferably 125 kGy or less, and even more preferably 100 kGy or less.

[0168] The electron beam source is not particularly limited as long as it can achieve the above-mentioned irradiation conditions, and various electron beam accelerators such as Cockcroft-Walton type, Van de Graaf type, resonant transformer type, insulating core transformer type, linear type, dynamitron type, and high frequency type can be used.

[0169] The second wavelength light of 200 nm or more and 400 nm or less employed in the irradiation treatment (3) above can be irradiated using an ultraviolet irradiation device using a light source such as an ultra-high pressure mercury lamp, a high pressure mercury lamp, a low pressure mercury lamp, a carbon arc lamp, a black light fluorescent lamp, a metal halide lamp, etc. Also, excimer light of wavelengths of 200 nm or more and 400 nm or less, such as 222 nm (KrCl), 247 nm (KrF), 308 nm (XeCl), etc. may be used.

[0170] The wavelength of the second wavelength light used in the irradiation treatment (3) above is preferably 330 nm or more and 390 nm or less. When the wavelength of the second wavelength light is within the above range, the shape of the wrinkle structure is more easily maintained. For the same reasons as above, the output of the ultraviolet irradiation device is preferably 50 W / cm or more, more preferably 100 W / cm or more. The output of the ultraviolet irradiation device is preferably 300 W / cm or less, more preferably 200 W / cm or less. The irradiation speed is preferably 1 r / min or more, more preferably 3 r / min or more. The irradiation speed is preferably 50 r / min or less, more preferably 10 r / min or less.

[0171] In this manner, a cured resin layer having a specific surface shape is obtained.

[0172] C. How the Article is Manufactured The present disclosure provides a method for manufacturing an article, the method including a shaped sheet preparation step of preparing the above-mentioned shaped sheet, a step of preparing a shaped body, a shaping step of pressing the surface of the shaped sheet facing the cured resin layer against the shaped body to give the shaped body a surface shape that is the inverse of the surface shape of the cured resin layer of the shaped sheet, and a peeling step of peeling off the shaped sheet.

[0173] 8 is a process flow diagram showing an example of a method for manufacturing an article according to the present disclosure. First, as shown in FIG. 8(a), a shaped sheet 10 is prepared (shaped sheet preparation step). Next, as shown in FIG. 8(b), a shaped object 20 is prepared (shaped object preparation step). The shaped object 20 is, for example, a base layer 23, a design layer 21, and a shaped layer 22 arranged in the thickness direction D T 8(c), the surface of the shaping sheet 10 on the side of the cured resin layer 2 is pressed against the object 20 to form a surface shape that is the inverse of the surface shape of the cured resin layer 2 of the shaping sheet 10 on the object 20 (shaping step). At this time, it is preferable to laminate the first surface portion S11 and the second surface portion 12 of the shaping sheet 10 so that they are arranged according to the pattern of the design layer 21 of the object 20. Next, as shown in FIG. 8(d), the shaping sheet 10 is peeled off (peeling step). This forms an article 100 in which one surface S10 has a wrinkled structure and has a first surface region S110 and a second surface region S120 with different surface shapes.

[0174] 1. Forming sheet preparation process The shaped sheet is the same as the above-mentioned "A. shaped sheet", so the explanation here will be omitted.

[0175] 2. Shape preparation process As shown in FIG. 8(b), the object 20 is formed by, for example, forming a base layer 23, a design layer 21 (a picture layer 21x), and a shaped layer 22 in a thickness direction D T In this example, the object to be shaped 20 has these in this order. Although not specifically shown, the object to be shaped 20 may have a substrate on the surface of the substrate layer 23 opposite the design layer 21. The object to be shaped may not have a design layer. In this case, it is preferable that the substrate layer has a pattern. The substrate layer, design layer (pattern layer), object to be shaped layer, and substrate may be layers known in decorative sheets and decorative materials. The object to be shaped may also be a resin-impregnated sheet obtained by impregnating a laminate including a design layer and a porous substrate with a resin composition.

[0176] (a) Design layer The design layer may be any of those conventionally known as design layers for decorative sheets. The design layer preferably has a pattern.

[0177] Examples of patterns for the design layer include organic patterns, inorganic patterns, and abstract patterns. Organic patterns are patterns derived from the life activities of living organisms such as animals and plants. Inorganic patterns are patterns that do not fall under the category of organic patterns. Abstract patterns are patterns that interpret objects (such as images found in nature) abstractly and do not represent a clear shape. Examples of organic patterns include wood grain patterns, leather patterns, floral patterns, and botanical patterns. Examples of inorganic patterns include stone patterns, concrete patterns, sand patterns, fabric patterns, metal patterns, tile patterns, and brickwork patterns. Examples of abstract patterns include flickering patterns (such as ink flickering patterns), smoke patterns, and marble patterns.

[0178] The design layer may include, for example, a pattern layer. The design layer may also include a solid layer. In the present disclosure, the pattern layer refers to a layer formed partially (particularly in a pattern) on one surface of the base layer. The solid layer refers to a layer formed entirely on one surface of the base layer.

[0179] The design layer contains, for example, a colorant and a resin component. Examples of colorants include inorganic pigments such as carbon black, titanium white, zinc white, red iron oxide, Prussian blue, and cadmium red; organic pigments such as azo pigments, lake pigments, anthraquinone pigments, quinacridone pigments, phthalocyanine pigments, isoindolinone pigments, and dioxazine pigments; metal powder pigments such as aluminum powder and bronze powder; pearlescent pigments such as titanium oxide-coated mica and bismuth oxide chloride; fluorescent pigments; and luminous pigments. Dyes may also be used as colorants.

[0180] Examples of resin components include (meth)acrylic resins, ester urethane resins, acrylamide resins, ethylene oxide resins, N-vinylpyrrolidone resins, ester resins, amide resins, vinyl acetate resins, vinyl chloride resins, urethane (meth)acrylic resins, natural rubber, and synthetic rubber. Among these, (meth)acrylic resins and urethane (meth)acrylic resins are preferred. Other usable resins include aqueous proteins such as casein, cellulose, acetyl cellulose, soluble cellulose, hydroxypropyl cellulose, and carboxymethyl cellulose, polyvinyl alcohol derivatives such as polyvinyl butyral resins, amino resins such as melamine resins, (meth)acrylic acid resins, phenolic resins, acrylic polyols, and natural polymers (e.g., polynucleotides, polypeptides, and polysaccharides). In the present disclosure, one or more of the above resin components may be used.

[0181] The design layer may contain additives such as fillers (e.g., silica), extender pigments (e.g., organic beads), neutralizers, surfactants, etc. The thickness of the design layer is not particularly limited, but is, for example, 0.1 μm or more and 20 μm or less.

[0182] The design layer can be formed, for example, by coating an ink containing a colorant, a binder resin, and a solvent (or a dispersion medium). For example, the ink is applied to one side of the substrate layer and dried to obtain the design layer.

[0183] (b) Shaped layer The shape-receiving layer is formed, for example, by applying a shape-receiving layer-forming composition. The shape-receiving layer-forming composition is a composition that can be formed into a specific surface shape by shaping using a shape-receiving sheet.

[0184] The resin contained in the coating layer-forming composition is not particularly limited as long as it is a resin that can be used to form a specific surface shape, and a curable resin can be used. Examples of the curable resin include an ionizing radiation curable resin and a thermosetting resin. Thermoplastic resins can also be used.

[0185] The ionizing radiation curable resin is the same as the ionizing radiation curable resin used in the curable resin composition. Examples of the thermosetting resin include melamine resins, diallyl phthalate resins, polyester resins, guanamine resins, acrylic resins, urethane resins, phenolic resins, urea melamine resins, epoxy resins, unsaturated polyester resins, and silicone resins.

[0186] When the resin is an ultraviolet-curable resin, the composition for forming the coating layer may contain a photopolymerization initiator, a photopolymerization accelerator, etc. The photopolymerization initiator and the photopolymerization accelerator are the same as the photopolymerization initiator and the photopolymerization accelerator used in the curable resin composition.

[0187] When the resin is a thermosetting resin, the coating layer forming composition may contain a curing agent. The curing agent may be appropriately selected depending on the type of thermosetting resin. The shape-receiving layer may contain any additives such as an ultraviolet absorber, a light stabilizer, a water repellent, etc.

[0188] (c) Other layers The object to be shaped may have layers other than the design layer and the shaped layer. Examples of the other layers include a substrate layer, a foamed resin layer, a non-foamed resin layer, a primer layer, a film layer, and an adhesive layer. These layers can be any layers known in the field of conventional decorative sheets.

[0189] When the object to be shaped is a resin-impregnated sheet, the substrate layer may be a porous substrate impregnated with a thermosetting resin, such as a fiber substrate or a paper substrate.

[0190] The shaped object may have a substrate. As the substrate, a substrate known in the field of conventional decorative materials can be used. Examples of the substrate include a resin member, a wooden member, a metal member, and a ceramic member. The shape of the substrate is not particularly limited, and examples thereof include a plate-like, a sheet-like, and a three-dimensional shape. Furthermore, the substrate may have a flat portion, a curved portion, or both a flat portion and a curved portion. Furthermore, the substrate may have at least one of a convex portion, a concave portion, a convex ridge portion, a concave ridge portion, and a through portion.

[0191] 3. Shaping process In this step, the surface of the shaping sheet on the side of the cured resin layer is pressed against the object to be shaped, and the object is shaped into a surface shape that is the inverse of the surface shape of the cured resin layer of the shaping sheet.

[0192] When laminating the shaped object and the shaped sheet in this step, it is preferable to laminate them so that the first surface portion and the second surface portion of the cured resin layer of the shaped sheet are arranged according to the pattern of the shaped object. Arranging the first surface portion and the second surface portion according to the pattern includes, for example, a case where the first surface portion is arranged so as to overlap the pattern layer 21x in the thickness direction, and a case where the second surface portion is arranged so as to overlap the pattern layer 21x. In this case, it is not necessary for the entire area of ​​the first surface portion or the second surface portion to overlap the pattern layer 21x.

[0193] The coating layer may be cured while the shape-receiving layer and the cured resin layer of the shape-receiving sheet are in contact with each other. The curing method can be appropriately selected depending on the composition of the shape-receiving layer-forming composition. For example, when the shape-receiving layer-forming composition contains an ionizing radiation-curable resin, a curing method using ionizing radiation irradiation can be used. Furthermore, when the shape-receiving layer-forming composition contains a thermosetting resin, a curing method using heat can be used.

[0194] In this step, for example, an embodiment can be mentioned in which the object to be shaped is shaped using an embossing roller on which a shaped sheet is placed. This allows the object to be shaped to have the specific surface shape of the shaped sheet. In this case, the object to be shaped can be any object that can be used without particular limitation as long as it has an embossed plate that imparts a concave-convex shape to its surface. Examples of the object to be shaped include a sheet-like object whose shaped layer contains a thermoplastic resin.

[0195] In another preferred embodiment, a resin-impregnated sheet is used as the object to be shaped, in which a laminate including a design layer and a porous substrate is impregnated with a thermosetting resin composition, and the object to be shaped and the shaping sheet are arranged so that the cured resin layer of the shaping sheet faces the object to be shaped, and the resin composition is cured by heat and pressure molding. The conditions for heat and pressure molding may be adjusted appropriately depending on the type of thermosetting resin used.

[0196] 4. Peeling process In the peeling step, the shaped sheet is peeled off to form a specific surface shape on the surface of the object to be shaped. The peeling speed of the shaped sheet, the temperature during peeling, and the peeling means are not particularly limited, and any known means can be appropriately selected and the conditions can be set according to the means.

[0197] 5.Goods In the present disclosure, as shown in Fig. 8(d), an article 100 is formed in which one surface S10 has a wrinkled structure and has a first surface region S110 and a second surface region S120 with different surface shapes. Such an article has a low gloss and a gloss-matte feel.

[0198] The article obtained in the present disclosure is preferably a decorative sheet or decorative material. The decorative sheet or decorative material can be used for various purposes, such as interior components of buildings such as walls, ceilings, and floors, exterior components such as exterior walls, eaves ceilings, roofs, fences, and railings, fittings or fixtures such as window frames, doors, door frames, handrails, baseboards, moldings, and other building components, as well as decorative surface panels for general furniture such as chests of drawers, shelves, and desks, kitchen furniture such as dining tables and sinks, and cabinets for home appliances and office automation equipment, interior and exterior components for vehicles, and further packaging materials.

[0199] The present disclosure is not limited to the above-described embodiments. The above-described embodiments are merely examples, and anything that has substantially the same configuration as the technical idea described in the claims of the present disclosure and exhibits similar effects is included within the technical scope of the present disclosure. [Example]

[0200] [Example 1] A solid layer was formed with white ink on one side of a 140 μm thick polypropylene film, and then a patterned layer was formed with black ink. This resulted in the formation of a first embodiment of an optical layer having a first optical portion (white area) that did not overlap with the patterned layer and a second optical portion (black area) that overlapped with the patterned layer. The reflectance ρ of the first optical portion at a wavelength of 395 nm was r is 27.8%, and the reflectance of light with a wavelength of 395 nm in the second optical section ρ r′ was 3.7%, and the value of the above (Equation 1) was 1.23. That is, the integrated light amount ratio I of the light absorbed by the coating layer on the first optical part and the coating layer on the second optical part was t1 / I t2 was 1.23.

[0201] Next, the following curable resin composition was applied to the surface of the optical layer opposite to the supporting substrate in a dry amount of 5 g / m 2 The coating layer was then irradiated with ultraviolet light using a UV irradiation device consisting of LEDs (LED-UV irradiation, wavelength 395 nm, maximum illuminance 0.6 W / cm). 2 , cumulative light intensity 30~100mJ / cm 2) to perform preliminary curing. Next, ultraviolet light was irradiated using an excimer light irradiation device (excimer irradiation, wavelength 172 nm (Xe2), ultraviolet output density 30 mW / cm 2 , cumulative light intensity 5~100mJ / cm 2 , nitrogen atmosphere). Further, an electron beam was irradiated (accelerating voltage 100 to 150 kV, exposure dose 30 to 100 kGy) to form a cured resin layer on the optical layer. This resulted in a shaped sheet having a supporting substrate, an optical layer, and a cured resin layer in this order.

[0202] (Curable resin composition) Polyfunctional acrylate monomer 52.5 parts by mass Monofunctional acrylate monomer 17.5 parts by mass Multifunctional urethane acrylate oligomer 30.0 parts by mass Silica particles (average particle size 8 μm) 3.0 parts by weight Photopolymerization initiator (benzophenone type) 2.0 parts by mass

[0203] [Example 2] A solid layer was formed with light gray ink on one side of a 140 μm thick polypropylene film, and then a patterned layer was formed with dark gray ink. This resulted in the formation of a first embodiment of an optical layer having a first optical portion (light gray area) that did not overlap with the patterned layer and a second optical portion (dark gray area) that overlapped with the patterned layer. The reflectance ρ of the first optical portion at a wavelength of 395 nm was r is 22.3%, and the reflectance of light with a wavelength of 395 nm in the second optical section ρ r′ was 7.0%, and the value of the above (Equation 1) was 1.14. That is, the ratio I of the integrated light amount of light absorbed by the coating layer on the first optical part and the coating layer on the second optical part was t1 / I t2 was 1.14.

[0204] Next, the curable resin composition used in Example 1 was applied to the surface of the optical layer opposite the support material in a dry amount of 5 g / m 2The coating layer was then irradiated with ultraviolet light using a UV irradiation device consisting of LEDs (LED-UV irradiation, wavelength 395 nm, maximum illuminance 0.6 W / cm). 2 , cumulative light intensity 30~100mJ / cm 2 ) to perform preliminary curing. Next, ultraviolet light was irradiated using an excimer light irradiation device (excimer irradiation, wavelength 172 nm (Xe2), ultraviolet output density 30 mW / cm 2 , cumulative light intensity 5~100mJ / cm 2 , nitrogen atmosphere). Further, an electron beam was irradiated (accelerating voltage 100 to 150 kV, exposure dose 30 to 100 kGy) to form a cured resin layer on the optical layer. This resulted in a shaped sheet having a supporting substrate, an optical layer, and a cured resin layer in this order.

[0205] It was confirmed that both the shaped sheets of Example 1 and Example 2 had a wrinkled structure on their surfaces. Furthermore, it was confirmed that the wrinkled structure in the region overlapping with the first optical part of the optical layer (first surface part) was fine, while the wrinkled structure in the region overlapping with the second optical part (second surface part) was coarse, and that the surface shapes were different.

[0206] The Ra (arithmetic mean roughness), Rz (maximum height), and RSm (average length of curved elements) of the first and second surface portions of the shaped sheets obtained in Examples 1 and 2 were measured in accordance with JIS B0601:2013, specifically by the following method. Rectangular samples (1024 μm × 768 μm) at 10 random locations were measured using a shape analysis laser microscope ("VK-X150 (controller) / VK-X160 (measurement unit)" manufactured by Keyence Corporation) with an objective lens of 50x, a laser wavelength of 658 nm, measurement mode: surface profile mode, measurement pitch: 0.13 μm, and measurement quality: high-speed mode. The average values ​​of the measurements at the 10 random locations were used as the Ra (arithmetic mean roughness), Rz (maximum height), and RSm (average length of curved elements). Figure 9 shows images of the first and second surface portions of the shaped sheets obtained in Examples 1 and 2 observed with a shape analysis laser microscope.

[0207] In addition, the 60° specular gloss of the first and second surface portions of the shaped sheets obtained in Examples 1 and 2 was measured in accordance with JIS K 5600-4-7:1999 using a gloss meter ("Microgloss (model name)", manufactured by BYK Gardner).

[0208] [Table 1]

[0209] In Examples 1 and 2, by using an optical layer with different optical properties for the first and second optical sections as the underlayer of the cured resin layer, a shaped sheet was obtained in which the surface shape of the first surface of the cured resin layer was different between the first surface section and the second surface section. Specifically, a shaped sheet with Rsm2 / Rsm1 of 1.5 or more was obtained. In the above examples, a first-type optical layer utilizing the light reflection characteristics was used, but it is presumed that similar effects can be obtained by changing the diffusion, transmission, and absorption characteristics.

[0210] Thus, the present disclosure provides, for example, the following inventions.

[0211] [1] A shaped sheet, an optical layer and a cured resin layer disposed on one surface of the optical layer; The optical layer has a first optical portion and a second optical portion having different optical properties when viewed in the thickness direction of the shaped sheet, The surface of the cured resin layer opposite to the optical layer is A surface shape having a wrinkle structure, and A shaped sheet in which, when viewed from the thickness direction, the surface shape of a first surface portion that overlaps at least a portion of the first optical portion is different from the surface shape of a second surface portion that overlaps at least a portion of the second optical portion.

[0212] [2] When the optical layer is irradiated with light having a wavelength longer than 320 nm and equal to or shorter than 400 nm from the cured resin layer side, the reflectance of the first optical portion with respect to the light having the wavelength is ρ r (%), and the reflectance of the second optical unit with respect to the wavelength light is ρ r’ The shaped sheet according to [1], which satisfies the following (Formula 1) when expressed as (%): (1+(ρ r / 100)) / (1+(ρ r’ / 100))≧1.1 (Formula 1)

[0213] [3] When the optical layer is irradiated with light having a wavelength longer than 320 nm and equal to or shorter than 400 nm from the cured resin layer side, the diffusion rate of the first optical portion with respect to the light having the wavelength is ρ d (%), and the diffusion rate of the second optical section with respect to the wavelength light is ρ d’ The shaped sheet according to [1], which satisfies the following (Formula 2) when expressed as (%): (2-(ρ d / 100)) / (2-(ρ d’ / 100))≧1.1 (Formula 2)

[0214] [4] The optical layer is a shaped sheet described in [1], which satisfies the following (Equation 3) when irradiated with light of a wavelength longer than 320 nm and shorter than 400 nm from the side opposite to the cured resin layer side, where the transmittance of the first optical part to the light of the wavelength is τ (%) and the transmittance of the second optical part to the light of the wavelength is τ' (%). τ / τ'≧1.1 (Equation 3)

[0215] [5] The optical layer is a shaped sheet according to [1], which satisfies the following formula 4 when irradiated with light having a wavelength longer than 320 nm and shorter than 400 nm from the cured resin layer side, where the absorptance of the first optical part for the light having the wavelength is A (%) and the absorptance of the second optical part for the light having the wavelength is A' (%). (2-(A / 100)) / (2-(A' / 100))≧1.1 (Equation 4)

[0216] [6] A shaped sheet described in any of [1] to [5], wherein when RSm (average length of curved elements) specified in JIS B0601:2013 in the first surface portion is Rsm1 and RSm (average length of curved elements) specified in JIS B0601:2013 in the second surface portion is Rsm2, the ratio of RSm2 to RSm1 (RSm2 / RSm1) is 1.5 or more.

[0217] [7] The shaped sheet according to [6], wherein Rsm1 and Rsm2 are each 100.0 μm or less.

[0218] [8] A shaped sheet described in any of [1] to [7], wherein Ra1 and Ra2 are each 2.0 μm or less, where Ra (arithmetic mean roughness) as specified in JIS B0601:2013 in the first surface portion is Ra1 and Ra (arithmetic mean roughness) as specified in JIS B0601:2013 in the second surface portion is Ra2.

[0219] [9] A shaped sheet described in any of [1] to [8], wherein Rz1 and Rz2 are each 15.0 μm or less, where Rz1 is the Rz (maximum height) specified in JIS B0601:2013 in the first surface portion and Rz2 is the Rz (maximum height) specified in JIS B0601:2013 in the second surface portion.

[0220]

[10] A shaped sheet described in any of [1] to [9], wherein the 60° gloss value of the first surface portion of the cured resin layer and the 60° gloss value of the second surface portion are each 10.0 or less.

[0221]

[11] The shaped sheet according to any one of [1] to

[10] , wherein the curable resin composition forming the cured resin layer contains a photopolymerization initiator.

[0222]

[12] [1] A method for producing a shaped sheet according to any one of [1] to

[11] , an optical layer forming step of forming the optical layer including the first optical portion and the second optical portion having different optical properties by applying two or more types of inks having different compositions; A method for producing a shaped sheet, comprising: a curable resin composition is applied to one side of the optical layer to form a coating layer; and the coating layer is subjected to the following steps in this order: (1) a preliminary curing treatment by irradiating with light having a wavelength of more than 320 nm and not more than 400 nm; (2) a first curing treatment by irradiating with light having a first wavelength of 100 nm or more and less than 200 nm; and (3) a second curing treatment by irradiating with at least one of an electron beam and light having a second wavelength of 200 nm or more and not more than 400 nm, thereby curing the coating layer and forming the cured resin layer.

[0223]

[13] The method for producing a shaped sheet according to

[12] , wherein the curable resin composition contains a photopolymerization initiator.

[0224]

[14] 1. A method for manufacturing an article, comprising: [1] to

[11] , a shaped sheet preparation step of preparing a shaped sheet according to any one of [1] to

[11] ; A step of preparing a shaped object; A shaping step in which the surface of the shaping sheet on the cured resin layer side is pressed against the shaping target body, and a surface shape that is an inverse of the surface shape of the cured resin layer of the shaping sheet is formed on the shaping target body; A method for manufacturing an article, comprising a peeling step of peeling off the shaped sheet.

[0225]

[15] The shaped object has a pattern,

[14] A method for manufacturing an article as described in

[14] , wherein in the shaping step, the shaping sheet is laminated on the object to be shaped so that one of the first surface portion and the second surface portion of the shaping sheet overlaps the pattern on the object to be shaped, and pressed against the object to form a surface shape on the object that is the inverse of the surface shape of the cured resin layer of the shaping sheet.

[0226]

[16] The method for manufacturing an article according to

[14] or

[15] , wherein the article is a decorative sheet or a decorative material. [Explanation of symbols]

[0227] 1 … Optical layer 2 … Cured resin layer 3...Supporting base material layer 10...Forming sheet 20 … Shaped object 21... Design layer 22 … Shaped layer 23 … Base material layer 100...Goods

Claims

1. A shaped sheet, an optical layer and a cured resin layer disposed on one surface of the optical layer; The optical layer has a first optical portion and a second optical portion having different optical properties when viewed in the thickness direction of the shaped sheet, The surface of the cured resin layer opposite to the optical layer is A surface shape having a wrinkle structure, and A shaped sheet in which, when viewed from the thickness direction, the surface shape of a first surface portion that overlaps at least a portion of the first optical portion is different from the surface shape of a second surface portion that overlaps at least a portion of the second optical portion.

2. When the optical layer is irradiated with light having a wavelength longer than 320 nm and equal to or shorter than 400 nm from the cured resin layer side, the reflectance of the first optical portion with respect to the light having the wavelength is ρ ｒ (%), and the reflectance of the second optical unit with respect to the wavelength light is ρ ｒ’ The shaped sheet according to claim 1, which satisfies the following (Equation 1) when expressed as (%): (1 + (ρ ｒ / 100)) / (1 + (ρ ｒ’ / 100)) ≥ 1.1 (Equation 1)

3. When the optical layer is irradiated with light having a wavelength longer than 320 nm and equal to or shorter than 400 nm from the cured resin layer side, the diffusion rate of the first optical portion with respect to the light having the wavelength is ρ ｄ (%), and the diffusion rate of the second optical section with respect to the wavelength light is ρ ｄ’ The shaped sheet according to claim 1, which satisfies the following (Equation 2) when expressed as (%): (2 - (ρ ｄ / 100)) / (2 - (ρ ｄ’ / 100)) ≥ 1.1 (Equation 2)

4. The optical layer satisfies the following formula (3) when irradiated with light having a wavelength of more than 320 nm and not more than 400 nm from the side opposite the cured resin layer side, where the transmittance of the first optical part to the light having the wavelength is τ (%) and the transmittance of the second optical part to the light having the wavelength is τ' (%). τ / τ'≧1.1 (Formula 3)

5. The optical layer satisfies the following formula (4) when irradiated with light having a wavelength of more than 320 nm and not more than 400 nm from the cured resin layer side, where the absorptance of the first optical part for the wavelength light is A (%) and the absorptance of the second optical part for the wavelength light is A' (%). The shaped sheet of claim 1. (2−(A / 100)) / (2−(A′ / 100))≧1.1 (Equation 4)

6. 2. The shaped sheet according to claim 1, wherein when RSm (average length of curved elements) as defined in JIS B0601:2013 in the first surface portion is Rsm1 and RSm (average length of curved elements) as defined in JIS B0601:2013 in the second surface portion is Rsm2, the ratio of RSm2 to RSm1 (RSm2 / RSm1) is 1.5 or more.

7. The shaped sheet according to claim 6 , wherein Rsm1 and Rsm2 are each 100.0 μm or less.

8. 2. The shaped sheet according to claim 1, wherein Ra1 and Ra2 are each 2.0 μm or less, where Ra1 is the arithmetic mean roughness (arithmetic average roughness) as defined in JIS B0601:2013 for the first surface portion and Ra2 is the arithmetic mean roughness (arithmetic average roughness) as defined in JIS B0601:2013 for the second surface portion.

9. 2. The shaped sheet according to claim 1, wherein Rz1 and Rz2 are each 15.0 μm or less, where Rz1 is the maximum height defined in JIS B0601:2013 for the first surface portion and Rz2 is the maximum height defined in JIS B0601:2013 for the second surface portion.

10. The shaped sheet according to claim 1 , wherein the 60° gloss value of the first surface portion and the 60° gloss value of the second surface portion of the cured resin layer are each 10.0 or less.

11. The shaped sheet according to claim 1 , wherein the curable resin composition forming the cured resin layer contains a photopolymerization initiator.

12. A method for producing a shaped sheet according to any one of claims 1 to 11, an optical layer forming step of forming the optical layer including the first optical portion and the second optical portion having different optical properties by applying two or more types of inks having different compositions; A method for producing a shaped sheet, comprising: a curable resin composition is applied to one surface of the optical layer to form a coating layer; and the coating layer is subjected to the following steps in this order: (1) a preliminary curing treatment by irradiating with light having a wavelength of more than 320 nm and not more than 400 nm; (2) a first curing treatment by irradiating with light having a first wavelength of 100 nm or more and less than 200 nm; and (3) a second curing treatment by irradiating with at least one of an electron beam and light having a second wavelength of 200 nm or more and not more than 400 nm, thereby curing the coating layer and forming the cured resin layer.

13. The method for producing a shaped sheet according to claim 12 , wherein the curable resin composition contains a photopolymerization initiator.

14. 1. A method for manufacturing an article, comprising: a shaped sheet preparation step of preparing the shaped sheet according to any one of claims 1 to 11; A step of preparing a shaped object; A shaping step in which the surface of the shaping sheet on the cured resin layer side is pressed against the shaping target body, and a surface shape that is an inverse of the surface shape of the cured resin layer of the shaping sheet is formed on the shaping target body; A method for manufacturing an article, comprising a peeling step of peeling off the shaped sheet.

15. The shaped object has a pattern, 15. The method for manufacturing an article according to claim 14, wherein in the shaping step, the shaping sheet is laminated on the object to be shaped so that one of the first surface portion and the second surface portion of the shaping sheet overlaps the pattern on the object to be shaped, and pressed against the object to form a surface shape on the object that is the inverse of the surface shape of the cured resin layer of the shaping sheet.

16. The method for manufacturing an article according to claim 15, wherein the article is a decorative sheet or a decorative material.

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