Laminated body and method for producing laminated body

Abstract

To provide a laminated body which allows a first surface region to be distinguished from a second surface region or allows the second surface region to be distinguished from the first surface region without excessive conspicuousness, and can inhibit impairment of a unified design appearance.SOLUTION: According to an embodiment of the present invention, a laminated body 10 including a plastic sheet is provided. A surface 10A of the laminated body 10 includes at least a first surface region 10A1 and a second surface region 10A2 that has a 60-degree specular gloss lower than a 60-degree specular gloss of the first surface region 10A1. The second surface region 10A2 is present in the same layer as the layer having the first surface region 10A1. The ratio of the 60-degree specular gloss of the second surface region 10A2 to the 60-degree specular gloss of the first surface region 10A1 is from 0.40 to 0.97 inclusive.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a laminate and a method for manufacturing the laminate.

Background Art

[0002] Conventionally, cards such as IC cards have been used. Usually, the surface of the card is mirror-finished or matte-finished. Currently, from the viewpoint of enhancing the design, there is a demand for partially changing the texture of the surface of the card. For example, it is desired to make a part of the surface of the card matte and the other part mirror-finished, or to make a part of the surface of the card mirror-finished and the other part matte.

[0003] As a method of making a part matte and the other part mirror-finished or the like, for example, a method using a hot press plate such as a stainless steel plate used at the time of manufacturing the card can be considered. In this method, since the card is formed by integrating a plastic sheet or the like by hot pressing while heating and pressing the plastic sheet in a state where two or more plastic sheets are laminated, a part of the mirror-like hot press plate used at the time of hot pressing is made matte, and the hot press plate with a part being matte is used to transfer the shape to the surface of the card, so that a part of the surface of the card is made matte and the other part is made mirror-finished. Also, it has been proposed to form a transfer ink layer on a part of the matte surface to make a part of the surface matte and the rest mirror-finished (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the method using a hot press plate, in order to make a part of the hot press plate matte, it is necessary to perform shot blasting or sand blasting on the surface of the hot press plate, which requires a great deal of labor during manufacturing and increases the manufacturing cost. In addition, it is difficult to cope with a large number of uneven designs.

[0006] Also, depending on the design, although the difference between the mirror-finish part and the matte part can be deliberately made small so that the matte part can be recognized as a different part from the mirror-finish part, there are cases where it is desired to make the matte part less prominent with respect to the mirror-finish part or make the mirror-finish part less prominent with respect to the matte part. However, with the method using a hot press plate, it is difficult to create such a small difference.

[0007] In addition, in the method of forming a transfer ink layer on a part of the matte surface, since the mirror-finish part is composed of a different material from the matte part, the unity of the design may be impaired.

[0008] The present invention has been made to solve the above problems. That is, to provide a laminate in which the first surface region can be distinguished from the second surface region or the second surface region can be distinguished from the first surface region, but the difference can be made less prominent and the impairment of the unity of the design can be suppressed, or to provide a method for manufacturing a laminate that can be manufactured simply and inexpensively and can make the first surface region distinguishable from the second surface region or the second surface region distinguishable from the first surface region, but the difference can be made less prominent and the impairment of the unity of the design can be suppressed.

Means for Solving the Problems

[0009] [1] A laminate having a plastic sheet, wherein the surface of the laminate has at least a first surface region and a second surface region having a 60-degree specular glossiness lower than that of the first surface region, the second surface region is present in the same layer as the layer having the first surface region, and the ratio of the 60-degree specular glossiness of the second surface region to the 60-degree specular glossiness of the first surface region is 0.40 or more and 0.97 or less.

[0010] [2] The laminate according to [1] above, wherein the 60-degree specular glossiness of the first surface region is 17 or more and 40 or less.

[0011] [3] The laminate according to [1] or [2] above, wherein the laminate further comprises a printing layer, and the surface of the laminate is the surface of the printing layer.

[0012] [4] The laminate according to [1] or [2] above, wherein the surface of the laminate is the surface of the plastic sheet.

[0013] [5] The laminate according to any one of [1] to [4] above, wherein the laminate is an IC card.

[0014] [6] A method for manufacturing a laminate having a plastic sheet and having two or more surface regions with different 60-degree specular glossinesses on the surface, the method comprising: preparing a surface texture adjusting sheet comprising a base material layer having irregularities on the surface, a pattern layer partially provided on the surface of the base material layer, and a release layer provided on the pattern layer and in a region where the pattern layer does not exist on the base material layer; and heating and pressing the laminate precursor in a state where the laminate precursor and the surface texture adjusting sheet are overlapped so that the release layer of the surface texture adjusting sheet contacts the surface of the laminate precursor having the plastic sheet.

[0015] [7] The method for manufacturing a laminate according to [6] above, wherein the surface texture adjusting sheet further comprises an underlayer provided between the base material layer and the pattern layer and between the base material layer and the release layer in a region where the pattern layer does not exist.

[0016] [8] The manufacturing method of the laminate according to [7] above, wherein the base layer is formed by offset printing.

[0017] [9] The manufacturing method of the laminate according to [7] above, wherein the base layer is formed by silk screen printing.

[0018]

[10] The manufacturing method of the laminate according to any one of [6] to [9] above, wherein the base material layer is a foamed polyester resin sheet.

[0019]

[11] The manufacturing method of the laminate according to any one of [6] to

[10] above, wherein the laminate precursor further includes a printing layer, and the surface of the laminate precursor is the surface of the printing layer.

[0020]

[12] The manufacturing method of the laminate according to any one of [6] to

[10] above, wherein the surface of the laminate precursor is the surface of the plastic sheet.

[0021]

[13] The manufacturing method of the laminate according to any one of [6] to

[12] above, wherein the surface quality adjusting sheet is transparent and has a mark for alignment with the laminate precursor. [Effect of the Invention]

[0022] According to the laminate of the present invention, although the first surface region can be distinguished from the second surface region or the second surface region can be distinguished from the first surface region, it can be made less prominent, and it is possible to suppress the impairment of the unity of the design. Further, according to the manufacturing method of the laminate of the present invention, although the first surface region can be distinguished from the second surface region or the second surface region can be distinguished from the first surface region, it can be made less prominent, and a laminate that can suppress the impairment of the unity of the design can be manufactured simply and inexpensively. [Brief Description of the Drawings]

[0023]

Figure 1

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Figure 8

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Figure 10

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Figure 15

BEST MODE FOR CARRYING OUT THE INVENTION

[0024] [First Embodiment] Hereinafter, a laminate and a method for manufacturing the same according to the first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic plan view of the laminate according to the present embodiment, FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1, and FIG. 3 is a schematic cross-sectional view of another laminate according to the present embodiment. FIG. 4 is a schematic plan view of a surface quality adjusting sheet used when manufacturing the laminate according to the present embodiment, and FIG. 5 is a cross-sectional view taken along line B-B in FIG. 4. FIG. 6A is a partially enlarged view of a region where a pattern layer of the surface quality adjusting sheet shown in FIG. 5 exists, and FIG. 6B is a partially enlarged view of a region where the pattern layer of the surface quality adjusting sheet shown in FIG. 5 does not exist. FIGS. 8A and 8B are schematic diagrams showing the manufacturing process of the laminate according to the first embodiment, and FIGS. 9A and 9B are schematic diagrams showing the manufacturing process of another laminate according to the first embodiment.

[0025] <<<Laminate>>> The laminate 10 shown in FIGS. 1 and 2 is an IC card, specifically, a non-contact type IC card that can communicate non-contact with an external device such as a reader / writer. Note that the laminate 10 may be a contact type IC card, a contact and non-contact shared IC card that can realize both the functions of a contact type IC card and a non-contact type IC card, and is not limited to an IC card, and may be a plastic card or a magnetic card.

[0026] The surface 10A of the laminate 10 has a first surface region 10A1 and a second surface region 10A2 whose 60-degree specular glossiness is lower than that of the first surface region 10A1. The second surface region 10A2 exists in the same layer as the layer having the first surface region 10A1. Specifically, since the outermost layer of the laminate 10 shown in FIG. 1 is a printing layer 33 to be described later, both the first surface region 10A1 and the second surface region 10A2 are the surface 33A of the printing layer 33. That is, the first surface region 10A1 and the second surface region 10A2 constitute the surface 10A of a continuous layer.

[0027] The ratio of the 60-degree specular glossiness of the second surface area 10A2 to the 60-degree specular glossiness of the first surface area 10A1 (60-degree specular glossiness of the second surface area / 60-degree specular glossiness of the first surface area) is 0.40 or more and 0.97 or less. If this ratio is 0.40 or more, the prominence of the second surface area 10A2 with respect to the first surface area 10A1 or the first surface area 10A1 with respect to the second surface area 10A2 can be suppressed, so that the design property can be enhanced. If it is 0.97 or less, since it can be visually recognized that the second surface area 10A2 has a surface quality different from that of the first surface area 10A1, the design property can be enhanced. The lower limit of this ratio is preferably 0.45 or more, or 0.50 or more, and the upper limit is preferably 0.95 or less, or 0.90 or less. The "60-degree specular glossiness" in this specification means the specular glossiness measured based on Method 3 of the specular glossiness measurement method described in JIS Z8741:1997. The 60-degree specular glossiness shall be measured using a 60-degree gloss meter (gloss meter, for example, product number "IG-320", manufactured by Horiba, Ltd.) based on Method 3 of the specular glossiness measurement method described in JIS Z8741:1997.

[0028] The 60-degree specular glossiness of the first surface area 10A1 is preferably 17 or more and 40 or less. If this 60-degree specular glossiness is 17 or more, a relatively mirror-finished first surface area 10A1 can be obtained. If it is 40 or less, since the 60-degree specular glossiness of the first surface area 10A1 is not too high, the prominence of the second surface area 10A2 with respect to the first surface area 10A1 or the first surface area 10A1 with respect to the second surface area 10A2 can be suppressed. The lower limit of this glossiness is more preferably 20 or more, and the upper limit is more preferably 30 or less, or 25 or less.

[0029] The specular glossiness at 60 degrees of the second surface area 10A2 is preferably 5 or more and less than 17. If this specular glossiness at 60 degrees is 5 or more, the specular glossiness of the second surface area 10A2 is not too low, so the prominence of the second surface area 10A2 with respect to the first surface area 10A1 or the first surface area 10A1 with respect to the second surface area 10A2 can be suppressed. Also, if it is less than 17, a matte-finished second surface area 10A2 can be obtained. The lower limit of this glossiness is more preferably 10 or more, and the upper limit is more preferably 15 or less.

[0030] The ratio of the arithmetic mean roughness Ra of the second surface area 10A2 to the arithmetic mean roughness Ra of the first surface area 10A1 (arithmetic mean roughness Ra of the second surface area / arithmetic mean roughness Ra of the first surface area) may be 0.80 or more and 0.96 or less. Also, the arithmetic mean roughness Ra of the first surface area 10A1 and the second surface area 10A2 may each be 0.450 μm or more and 0.600 μm or less. The definition of the arithmetic mean roughness Ra shall follow JIS B0601:2013. The arithmetic mean roughness Ra is based on the description of 4.2 height-direction parameters described in JIS B0601:2013. The arithmetic mean roughness Ra is a value measured by a surface roughness meter (for example, product number "SURFCOM480A", manufactured by Tokyo Seimitsu Co., Ltd.).

[0031] A pattern formed by irregularities is displayed on the second surface area 10A2. However, the pattern may be displayed on the first surface area 10A1.

[0032] The laminate 10 has a plastic sheet. It includes a laminated sheet 20, an upper layer portion 30, and a lower layer portion 40. The upper layer portion 30 is laminated on the upper side Z2 of the laminated sheet 20, and the lower layer portion 40 is laminated on the lower side Z1 of the laminated sheet 20. The laminated sheet 20, the upper layer portion 30, and the lower layer portion 40 are all composed of a laminate of plastic sheets, and the laminate 10 is an integration of these laminates. Although the description is omitted, the laminate 10 may be provided with a magnetic stripe readable by a magnetic reader, external contact terminals for electrically connecting and communicating with an external device, etc., as necessary.

[0033] The laminated sheet 20 includes an antenna sheet 21, an IC module 22, an antenna 23, a spacer layer 24, an upper sheet 25, and a lower sheet 26. The laminated sheet 20 is formed by thermally pressing these members in a stacked state and processing them into a sheet shape.

[0034] The outer shapes of the antenna sheet 21, the spacer layer 24, the upper sheet 25, and the lower sheet 26 are equivalent to the outer shape of the laminate 10. The antenna sheet 21 is disposed between the upper sheet 25 and the lower sheet 26. That is, the spacer layer 24 and the upper sheet 25 are laminated in this order from the lower side Z1 to the upper side Z2 on the upper surface of the antenna sheet 21. The lower sheet 26 is laminated on the lower surface of the antenna sheet 21.

[0035] The antenna sheet 21 has the IC module 22 and the antenna 23 mounted thereon. The antenna sheet 21 has holes for disposing the IC module 22. The IC module 22 is a member in which a non-contact communicable IC chip 22A is mounted on an electric substrate 22B. The IC chip 22A is sealed with resin 22C or the like.

[0036] The antenna 23 is a loop coil antenna for non-contact communication by an electromagnetic induction method. The antenna 23 is, for example, formed by winding a coated conductor in a coil shape. Both ends of the antenna 23 are electrically connected to the IC chip 22A via the electric substrate 22B. Note that the IC chip 22A may be directly mounted on the antenna sheet 21, and the antenna 23 may be provided on the antenna sheet 21 by etching a conductor (such as aluminum or copper).

[0037] The spacer layer 24 is disposed between the antenna sheet 21 and the upper sheet 25 to adjust for the thickness of the IC chip 22A. The spacer layer 24 has holes for disposing the IC module 22. The upper sheet 25 is the uppermost layer of the laminated sheet 20, and the lower sheet 26 is the lowermost layer of the laminated sheet 20.

[0038] The upper layer 30 is formed by laminating an upper base material 31, a transparent sheet 32, and a printing layer 33 from the lower side Z1 to the upper side Z2. The outer shapes of the upper base material 31 and the transparent sheet 32 are the same as the outer shape of the laminate 10. The upper base material 31 is the core member of the laminate 10. The transparent sheet 32 is a cover layer that protects the upper surface of the laminate 10. The printing layer 33 is a layer on which characters such as the company name of a credit card, symbols, patterns, etc. are provided by offset printing or the like.

[0039] The lower layer 40 is formed by laminating a lower base material 41 and a transparent sheet 42 from the upper side Z2 to the lower side Z1. The outer shapes of the lower base material 41 and the transparent sheet 42 are the same as the outer shape of the laminate 10. The lower base material 41 is, like the upper base material 31, the core member of the laminate 10. The transparent sheet 42 is a cover layer that protects the lower surface of the laminate 10. On the upper surface or the lower surface of the transparent sheet 42, there is provided a printing layer (not shown) on which instructions for using the laminate 10 and the like are printed.

[0040] Although detailed description is omitted, a silk screen printing layer or the like may be provided between the respective layers for the purpose of concealing the internal structure, improving the thermal weldability between the layers, and the like.

[0041] The base materials and sheets that make up the laminated sheet 20, the upper layer portion 30, and the lower layer portion 40 are composed of plastic sheets. Examples of the resin that makes up the plastic sheet include polyester resins such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), 1,4-polycyclohexylene dimethylene terephthalate, terephthalic acid-cyclohexanedimethanol-ethylene glycol copolymer; polyamide resins such as nylon 6 and nylon 6,6; polyolefin resins such as polyethylene (PE), polypropylene (PP), and polymethylpentene; vinyl resins such as polyvinyl chloride, polyvinyl alcohol (PVA), polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, and polyvinyl pyrrolidone (PVP); (meth)acrylic resins such as polyacrylate, polymethacrylate, and polymethyl methacrylate; polyimide resins such as polyimide and polyetherimide; cellulose resins such as cellophane, cellulose acetate, nitrocellulose, cellulose acetate propionate (CAP), and cellulose acetate butyrate (CAB); polystyrene resins such as polystyrene (PS); polycarbonate resins; and ionomer resins. From the perspective of weight reduction, the plastic sheet is preferably a foamed plastic sheet having bubbles inside. Among the foamed plastic sheets, a foamed polyester resin sheet is preferred because it is available at low cost, and a foamed polyethylene terephthalate sheet is more preferred. For example, the foamed polyester resin sheet is preferably used for at least one of the upper base material 31, the transparent sheet 32, the lower base material 41, and the transparent sheet 42.

[0042] <<Other laminates>> In the laminate 10, the surface 33A of the printing layer 33 serves as the surface 10A of the laminate 10. However, as shown in FIG. 3, the surface 32A of the transparent sheet 32 may serve as the surface 50A of the laminate 50 without providing the printing layer 33. In this case, the first surface region 50A1 and the second surface region 50A2 are present on the surface 32A. Since the first surface region 50A1 and the second surface region 50A2 are the same as the first surface region 10A1 and the second surface region 10A2 except that they are present on the surface 32A, the description thereof will be omitted.

[0043] In the laminate 10, the second surface region 10A2 is adjacent to the first surface region 10A1. However, the second surface region 10A2 may be spaced apart from the first surface region 10A1 and change to a so-called gradation in which the 60-degree specular glossiness gradually decreases from the first surface region 10A1 to the second surface region 10A2. In this case, for example, a third surface region that is adjacent to the first surface region 10A1 and the second surface region 10A2 and has a 60-degree specular glossiness located between the 60-degree specular glossiness of the first surface region 10A1 and the 60-degree specular glossiness of the second surface region 10A2 may be provided between the first surface region 10A1 and the second surface region 10A2.

[0044] <<<Method for manufacturing a laminate>>> The above laminate 10 can be manufactured by the following manufacturing method. First, a surface quality adjustment sheet 60 shown in FIGS. 4 and 5 is prepared.

[0045] <<Surface quality adjustment sheet>> As shown in FIG. 4, the surface quality adjustment sheet 60 is a large sheet and has a plurality of surface quality adjustment regions 60A so that the surface quality of a plurality of laminates 10 can be adjusted.

[0046] The sheet 60 for surface quality adjustment includes, within each surface quality adjustment region 60A, as shown in FIG. 5, a base material layer 61, an underlayer 62 provided on the surface 61A of the base material layer 61, a pattern layer 63 partially provided on the surface of the underlayer 62, and a release layer 64 provided on a region 60B where the pattern layer 63 exists and on a region 60C where the pattern layer 63 does not exist on the underlayer 62. The sheet 60 for surface quality adjustment shown in FIG. 5 includes the underlayer 62, but since the underlayer 62 is a layer that improves the adhesiveness between the base material layer 61, the pattern layer 63, and the release layer 64, the underlayer 62 may not be provided if the adhesion between the base material layer 61, the pattern layer 63, and the release layer 64 is good.

[0047] As shown in FIGS. 6A and 6B, the base material layer 61 has irregularities on its surface 61A. As shown in FIGS. 6A and 6B, the surface 60B1 of the region 60B where the pattern layer 63 exists in the sheet 60 for surface quality adjustment is flatter than the surface 60C1 of the region 60C where the pattern layer 63 does not exist on the underlayer 62. Note that the surface shape of the region 60B where the pattern layer 63 exists in the sheet 60 for surface quality adjustment corresponds to the surface shape of the first surface region 10A1 of the laminate 10, and the surface shape of the region 60C where the pattern layer 63 does not exist in the sheet 60 for surface quality adjustment corresponds to the surface shape of the second surface region 10A2 of the laminate 10.

[0048] The sheet 60 for surface quality adjustment is transparent, and the sheet 60 for surface quality adjustment preferably has a mark 65, for example, a reference line formed by printing, for facilitating alignment with the laminate precursor 80 as shown in FIG. 4.

[0049] <Base material layer> As described above, the base material layer 61 has irregularities on its surface 61A. When the underlayer 62 is formed by offset printing or when the underlayer 62 is not provided, the irregularities caused by the irregularities on the surface 61A of the base material layer 61 are transferred to the surface of the laminate precursor by hot pressing, resulting in a matte finish, and the second surface region 10A2 can be formed on the laminate.

[0050] The arithmetic mean roughness Ra of the surface 61A of the base material layer 61 is preferably 0.3 μm or more and 1 μm or less. If this arithmetic mean roughness Ra is 0.3 μm or more, the unevenness transferred to the laminate 10 can be visually confirmed, and if it is 1 μm or less, the unevenness transferred to the laminate 10 is not too large, so that the second surface region 10A2 can be suppressed from standing out with respect to the first surface region 10A1. The lower limit of the arithmetic mean roughness Ra of the surface 61A of the base material layer 61 is more preferably 0.4 μm or more or 0.5 μm or more, and the upper limit is more preferably 0.8 μm or less or 0.7 μm or less. The arithmetic mean roughness Ra can be measured in the same manner as the arithmetic mean roughness Ra of the first surface region 10A1 and the second surface region 10A2.

[0051] The thickness of the base material layer 61 is preferably 80 μm or more and 200 μm or less. If the thickness of the base material layer 61 is 80 μm or more, it is easy to print when printing the underlayer 62, the pattern layer 63, the release layer 64, etc., and if it is 200 μm or less, the thermal conductivity during hot pressing can be ensured. The lower limit of the thickness of the base material layer 61 is more preferably 100 μm or more or 125 μm or more, and the upper limit is more preferably 180 μm or less or 150 μm or less.

[0052] As the base material layer 61, a foamed plastic sheet can be used. The foamed plastic sheet is not particularly limited, but for example, it is preferable to use a foamed polyester-based resin sheet. Among the foamed polyester-based resin sheets, a foamed polyethylene terephthalate sheet is preferable. The foamed polyethylene terephthalate sheet is inexpensively available and has excellent lightness.

[0053] <Underlayer> The underlayer 62 is a layer for adhering the base material layer 61, the pattern layer 63, and the release layer 64, and is a layer formed by a printing method. The underlayer 62 shown in FIG. 5 is a layer formed by offset printing. In this case, the shape of the region 60B where the pattern layer 63 exists is transferred to the laminate 10 to form the first surface region 10A1, and the shape of the region 60C where the pattern layer 63 does not exist is transferred to the laminate 10 to form the second surface region 10A2. This is because the underlayer 62 formed by offset printing has a coarse texture while the pattern layer 63 can fill in the texture.

[0054] The underlayer 62 can be composed of a resin. As the resin constituting the underlayer, for example, an acrylic resin is preferable. By using an acrylic resin as the resin, it is possible to adhere the base material layer 61, the pattern layer 63, and the release layer 64.

[0055] <Pattern layer> The pattern layer 63 is a layer for forming any pattern such as a picture, a photograph, characters, numbers, figures, symbols, or patterns on the laminate 10 by transferring the shape of the pattern layer 63 to the surface 10A of the laminate 10. Although the shape of the region 60B where the pattern layer 63 exists may be transferred to the surface 10A of the laminate 10 to form a pattern on the surface 10A of the laminate 10, when there is a region 60C where the pattern layer 63 does not exist, such as a cutout portion where a pattern is formed in the pattern layer 63, the shape of the region 60B where the pattern layer 63 exists and the shape of the region 60C where the pattern layer 63 does not exist may be transferred to the surface 10A of the laminate 10 to form a pattern on the surface 10A of the laminate 10.

[0056] The pattern layer 63 contains a colorant such as a dye or a pigment and a binder resin. However, since the color tone of the pattern layer 63 is not transferred to the laminate 10, the pattern layer does not need to be multi-colored and may be single-colored. The pattern layer is a layer formed by a printing method. The pattern layer 63 shown in FIG. 5 is a layer formed by offset printing.

[0057] The dot density of the pattern layer 63 is preferably higher than that of the base layer 62. Thereby, since the coarseness of the base layer 62 can be suppressed by the pattern layer 63, the surface 60B1 of the region 60B where the pattern layer 63 exists on the base layer 62 can be made flatter than the surface 60C1 of the region 60C where the pattern layer 63 does not exist on the base layer 62.

[0058] <Release layer> The release layer 64 is a layer for preventing the ink of the pattern layer 63 from being transferred to the laminate precursor. The release layer 64 may be, for example, an overprint layer. As the overprint layer, those known as conventional overprint layers such as curable acrylic resins, cellulose resins, vinyl resins, polyester resins, amide resins, and olefin resins can be used. The release layer 64 shown in FIG. 5 is a layer formed by offset printing.

[0059] Further, a laminate precursor 80 is prepared. The laminate precursor 80 is a large-sized sheet as shown in FIG. 7 and has a plurality of laminate formation regions 80A so that a plurality of laminates 10 can be obtained. The laminate precursor 80 preferably has a mark 81 corresponding to a mark 65 for alignment with the surface quality adjustment sheet 60 as shown in FIG. 7, for example, a reference line formed by printing. The laminate precursor 80 in each laminate formation region 80A is the same as the laminate 10 except that the first surface region 10A1 and the second surface region 10A2 are not formed on the surface 33A of the printing layer 33. In the laminate precursor 80, the laminate sheet 20, the upper layer portion 30, and the lower layer portion 40 are integrated. When the laminate precursor 80 is composed of the upper layer portion 30 and the lower layer portion 40 that do not have the laminate sheet 20 and the printing layer 33, the laminate sheet 20, the upper layer portion 30, and the lower layer portion 40 do not have to be integrated at the stage of preparing the laminate precursor 80. In this case, the laminate sheet 20, the upper layer portion 30, and the lower layer portion 40 constituting the laminate precursor 80 are integrated by hot pressing in a state where the surface quality adjustment sheet 60 described later and the laminate precursor 80 are overlapped.

[0060] After preparing the surface quality adjustment sheet 60, as shown in FIG. 8A, the laminate precursor 80 and the surface quality adjustment sheet 60 are overlapped and arranged between the upper and lower hot press plates 71 and 72 so that the release layer 64 of the surface quality adjustment sheet 60 contacts the surface 80B of the laminate precursor 80. Here, it is preferable that the alignment of the surface quality adjustment sheet 60 and the laminate precursor 80 is performed such that the marks 65 and 81 overlap. Since the surface quality adjustment sheet 60 is transparent, it is easy to arrange the mark 65 of the surface quality adjustment sheet 60 so as to overlap the mark 81 of the laminate precursor 80. Thereby, it is possible to easily align the surface quality adjustment sheet 60 and the laminate precursor 80.

[0061] The surface quality adjustment sheet 60 is transparent, but it may be opaque. When the surface quality adjustment sheet 60 is opaque, the upper, lower, left, and right ends of the surface quality adjustment sheet 60 are slightly cut. In this case, when the surface quality adjustment sheet 60 is overlapped and arranged on the laminate precursor 80, since the surface quality adjustment sheet 60 is slightly smaller than the laminate precursor 80, a part of the mark 81 can be visually recognized, and alignment can be performed so that the mark 65 and the mark 81 overlap. Thereby, it is possible to easily align the surface quality adjustment sheet 60 and the laminate precursor 80 in the same manner as when the surface quality adjustment sheet 60 is transparent.

[0062] After arranging the laminate precursor 80 and the surface quality adjustment sheet 60 between the hot press plates 71 and 72, as shown in FIG. 8B, the laminate precursor 80 is hot pressed (heated and pressurized) with the hot press plates 71 and 72 at a temperature of, for example, 80° C. or higher and 150° C. or lower and a pressure of 0.5 MPa or higher and 5 MPa or lower. Thereby, the surface shape of the surface quality adjustment sheet 60 is transferred to the surface 80B of the laminate precursor 80. Specifically, the surface shape of the region 60B where the pattern layer 63 of the surface quality adjustment sheet 60 exists is transferred to the surface 10A of the laminate 10, and the first surface region 10A1 is formed, and the surface shape of the region 60C where the pattern layer 63 of the surface quality adjustment sheet 60 does not exist is transferred to the surface 10A of the laminate 10, and the second surface region 10A2 is formed.

[0063] Thereafter, the laminated body 10 in the multi-sided attachment state is separated into individual pieces by pressing or the like (not shown). Thereby, the laminated body 10 is obtained.

[0064] <<Another method for manufacturing a laminated body>> The laminated body 50 can also be manufactured by the same manufacturing method as that of the laminated body 10. However, in the case of the laminated body 50, it can also be manufactured by the following method.

[0065] First, in the same manner as the manufacturing method of the laminated body 10, as shown in FIG. 9A, between the upper and lower hot press plates 71 and 72, the release layer 64 of the surface quality adjustment sheet 60 is brought into contact with the surface 90A of the laminated body precursor 90, and the laminated body precursor 90 and the surface quality adjustment sheet 60 are overlapped and arranged. However, the laminated body precursor 90 is not integrated and is divided into a transparent sheet 32, an upper base material 31, a laminated sheet 20, a lower base material 41, and a transparent sheet 42.

[0066] After arranging the laminated body precursor 90 and the surface quality adjustment sheet 60 between the hot press plates 71 and 72, as shown in FIG. 9B, the laminated body precursor 90 is hot pressed (heated and pressurized) with the hot press plates 71 and 72 at a temperature of 80°C or higher and 150°C or lower and a pressure of 0.2 MPa or higher and 4 MPa or lower. Thereby, the surface shape of the surface quality adjustment sheet 60 is transferred to the surface 90A of the laminated body precursor 90, and each layer (between the transparent sheet 42 and the upper base material 31, between the upper base material 31 and the upper sheet 25 of the laminated sheet 20, between the lower sheet 26 of the laminated sheet 20 and the lower base material 41, between the lower base material 41 and the transparent sheet 42) is adhered by heat welding respectively, and the integrated laminated body 50 is formed.

[0067] The inventors of the present invention attempted to distinguish between the first surface region 10A1 and the second surface region 10A2 of the laminate 10 having the first surface region 10A1 and the second surface region 10A2 obtained using the surface texture adjusting sheet 60, based on the surface roughness such as the arithmetic mean roughness Ra. However, since the surface roughnesses of both were approximated, they could not be distinguished by the surface roughness. Furthermore, as a result of intensive research to distinguish between the first surface region 10A1 and the second surface region 10A2, the inventors found that they could be distinguished by the 60-degree specular glossiness.

[0068] According to the present embodiment, the surface 10A of the laminate 10 has a first surface region 10A1 and a second surface region 10A2 whose 60-degree specular glossiness is lower than that of the first surface region 10A1. Since the ratio of the 60-degree specular glossiness of the second surface region 10A2 to the 60-degree specular glossiness of the first surface region 10A1 is 0.40 or more and 0.97 or less, the second surface region 10A2 can be distinguished from the first surface region 10A1 or the first surface region 10A1 can be distinguished from the second surface region 10A2, but it is not so prominent. Also, since both the first surface region 10A1 and the second surface region 10A2 are present in the same layer, that is, the printing layer 33, it is possible to suppress impairment of the unity of the design. Note that the laminate 50 can also obtain the same effects as the laminate 10.

[0069] According to this embodiment, a surface texture adjusting sheet 60 is used, which includes a base material layer 61 having irregularities on its surface 61A, a pattern layer 63 partially provided on the surface 61A of the base material layer 61, and a release layer 64 provided in a region 60B where the pattern layer 63 exists and a region 60C on the base material layer 61 where the pattern layer 63 does not exist. In a state where the laminate precursor 80 and the surface texture adjusting sheet 60 are overlapped such that the release layer 64 of the surface texture adjusting sheet 60 contacts the surface 80B of the laminate precursor 80, the laminate precursor 80 is heated and pressed. As a result, although the first surface region 10A1 can be distinguished from the second surface region 10A2 or the second surface region 10A2 can be distinguished from the first surface region 10A1, it can be made less prominent, and a laminate 10 can be manufactured that suppresses damage to the unity of the design. Further, since the surface texture is adjusted using the surface texture adjusting sheet 60, it is not necessary to process the surfaces of the hot press plates 71 and 72. Moreover, since the surface texture adjusting sheet 60 can be easily manufactured by printing, the laminate 10 can be manufactured simply and inexpensively. Note that the manufacturing method of the laminate 50 can also obtain the same effects as the manufacturing method of the laminate 10.

[0070] Also, when processing a hot press plate to correspond to a large number of uneven designs, it is not practical because it is necessary to process the hot press plate by shot blasting, sandblasting, etc. for each design. In contrast, according to this embodiment, since the laminated structure of the base material layer 61, the pattern layer 63, and the release layer 64 can correspond to uneven designs, it is easy to correspond to a large number of uneven designs.

[0071] When processing the hot press plate, since the hot press plate is expensive, storage management is required. However, since the surface texture adjusting sheet 60 can be manufactured from inexpensive materials, it can be disposable. Therefore, in this case, storage management like that of the hot press plate is not required for the surface texture adjusting sheet 60.

[0072] When processing a hot press plate, arranging and processing the hot press plate are required. However, for the surface quality adjustment sheet 60, the base material layer 61 is easy to arrange, and the pattern layer and the release layer can also be easily manufactured by printing. Therefore, compared with the case of arranging and processing a hot press plate, the lead time can be shortened.

[0073] Since the 60-degree specular glossiness of the first surface region 10A1 and the second surface region 10A2 of the surface 10A of the laminate 10 is considered to depend on the dot density of offset printing, it is also possible to change it to a so-called gradation in which the 60-degree specular glossiness gradually decreases by gradually lowering the dot density of the pattern layer 63 from the first surface region 10A1 to the second surface region 10A2.

[0074] [Second Embodiment] Hereinafter, the laminate and its manufacturing method according to the second embodiment of the present invention will be described with reference to the drawings. FIG. 10 is a schematic plan view of the laminate according to the present embodiment, FIG. 11 is a cross-sectional view taken along line C-C in FIG. 10, and FIG. 12 is a schematic cross-sectional view of another laminate according to the present embodiment. FIG. 13 is a schematic cross-sectional view of the surface quality adjustment sheet used when manufacturing the laminate according to the present embodiment, FIG. 14A is a partially enlarged view of a region where the pattern layer of the surface quality adjustment sheet shown in FIG. 13 exists, FIG. 14B is a partially enlarged view of a region where the pattern layer of the surface quality adjustment sheet shown in FIG. 13 does not exist, and FIGS. 15A and 15B are schematic diagrams showing the manufacturing process of the laminate according to the present embodiment.

[0075] <<<Laminate>>> In the laminate 10 according to the first embodiment, a pattern is displayed in the second surface region 10A2, but it may be displayed in the first surface region 100A1 as in the laminate 100 shown in FIGS. 10 and 11. The surface 100A of the laminate 100 has a first surface region 100A1 and a second surface region 100A2 whose 60-degree specular glossiness is lower than that of the first surface region 100A1. The first surface region 100A1 of the laminate 100 is the same as the first surface region 10A1 of the laminate 10 except that a pattern is displayed, and the second surface region 100A2 of the laminate 100 is the same as the second surface region 10A2 of the laminate 10 except that no pattern is displayed. Therefore, the description thereof will be omitted here.

[0076] <<Another laminate>> In the laminate 100, the surface 33A of the printing layer 33 serves as the surface 100A of the laminate 100. However, as shown in FIG. 12, the surface 32A of the transparent sheet 32 may serve as the surface 110A of the laminate 110 without providing the printing layer 33. In this case, the first surface region 110A1 and the second surface region 110A2 exist on the surface 32A. Since the first surface region 110A1 and the second surface region 110A2 are the same as the first surface region 100A1 and the second surface region 100A2 except that they exist on the surface 32A, the description thereof will be omitted.

[0077] <<<Manufacturing method of laminate>>> The above laminate 100 can be manufactured by the following manufacturing method. First, a surface quality adjusting sheet 120 shown in FIG. 13 is prepared. Note that the surface quality adjusting sheet 120 is a large sheet similar to the surface quality adjusting sheet 60.

[0078] <<Surface quality adjusting sheet>> The sheet 120 for surface quality adjustment, similar to the sheet 60 for surface quality adjustment, within each surface quality adjustment region, as shown in FIG. 13, includes a base material layer 61, an underlayer 121 provided on the surface 61A of the base material layer 61, a pattern layer 63 partially provided on the surface of the underlayer 121, and a release layer 64 provided on the region 120A where the pattern layer 63 exists and on the region 120B where the pattern layer 63 does not exist on the underlayer 121.

[0079] As shown in FIGS. 14A and 14B, the surface 120B1 of the region 120B where the pattern layer 63 does not exist in the sheet 120 for surface quality adjustment is flatter than the surface 120A1 of the region 120A where the pattern layer 63 exists on the underlayer 121. Note that the surface shape of the region 120A where the pattern layer 63 exists in the sheet 120 for surface quality adjustment corresponds to the surface shape of the second surface region 100A2 of the laminate 100, and the surface shape of the region 120B where the pattern layer 63 does not exist in the sheet 120 for surface quality adjustment corresponds to the surface shape of the first surface region 100A1 of the laminate 100.

[0080] <Underlayer> The underlayer 121 is formed by silk screen printing. In this case, the shape of the region 120B where the pattern layer 63 does not exist is transferred to the laminate 100 to form the first surface region 100A1, and the shape of the region 120A where the pattern layer 63 exists is transferred to the laminate 100 to form the second surface region 100A2. This is because the layer formed by silk screen printing has a thick thickness, so the surface of the underlayer 121 becomes smooth, and since the pattern layer 63 is formed by offset printing, the texture becomes rough.

[0081] The thickness of the underlayer 121 is preferably 3 μm or more and 5 μm or less. If the thickness of the underlayer 121 is 3 μm or more, the contrast between the first surface region and the second surface region can be clearly defined by sufficiently filling the unevenness of the base material layer 61, and if it is 5 μm or less, it is possible to suppress the pattern layer 63 from being buried in the underlayer 121 during hot pressing and the contrast from being reduced.

[0082] After preparing the surface quality adjustment sheet 120, as shown in FIG. 15A, the release layer 64 of the surface quality adjustment sheet 120 is brought into contact with the surface 80B of the laminate precursor 80 between the upper and lower heat press plates 71 and 72, and the laminate precursor 80 and the surface quality adjustment sheet 120 are stacked and arranged.

[0083] After arranging the laminate precursor 80 and the surface quality adjustment sheet 120 between the heat press plates 71 and 72, as shown in FIG. 15B, the laminate precursor 80 is hot pressed (heated and pressurized) with the heat press plates 71 and 72 at a temperature of 80°C or higher and 150°C or higher and a pressure of 0.2 MPa or higher and 4 MPa or lower. Thereby, the surface shape of the surface quality adjustment sheet 120 is transferred to the surface 80B of the laminate precursor 80. Specifically, the surface shape of the region 120B where the pattern layer 63 of the surface quality adjustment sheet 120 does not exist is transferred to the surface 100A of the laminate 100, and the first surface region 100A1 is formed, and the surface shape of the region 120A where the pattern layer 63 of the surface quality adjustment sheet 120 exists is transferred to the surface 100A of the laminate 100, and the second surface region 100A2 is formed.

[0084] Thereafter, the multi-sided laminated laminate 100 is separated into individual pieces by pressing or the like (not shown). Thereby, the laminate 100 is obtained.

[0085] <<Another method for manufacturing a laminate>> The laminate 110 can also be manufactured by a manufacturing method similar to the manufacturing method of the laminate 100, but the laminate 110 may be manufactured using the laminate precursor 90 in the same manner as the manufacturing method of the laminate 50.

[0086] Also in this embodiment, the surface 100A of the laminate 100 has a first surface region 100A1 and a second surface region 100A2 whose 60-degree specular glossiness is lower than that of the first surface region 100A1. Since the ratio of the 60-degree specular glossiness of the second surface region 100A2 to that of the first surface region 100A1 is 0.40 or more and 0.97 or less, the second surface region 100A2 can be distinguished from the first surface region 100A1 or the first surface region 100A1 can be distinguished from the second surface region 10A2, but it can be made less prominent. Further, since both the first surface region 100A1 and the second surface region 100A2 are present in the same layer, that is, the printing layer 33, it is possible to suppress the impairment of the unity of the design. Note that the laminate 110 can also obtain the same effect as the laminate 100.

[0087] According to this embodiment, a surface texture adjusting sheet 120 including a base material layer 61 having irregularities on the surface 61A, a pattern layer 63 partially provided on the surface 61A of the base material layer 61, and a release layer 64 provided on the pattern layer 63 and in a region 120B where the pattern layer 63 does not exist on the base material layer 61 is used. The laminate precursor 80 and the surface texture adjusting sheet 120 are overlapped so that the release layer 64 of the surface texture adjusting sheet 120 contacts the surface 80B of the laminate precursor 80, and the laminate precursor 80 is heated and pressed. Thus, although the second surface region 100A2 can be distinguished from the first surface region 100A1 or the first surface region 100A1 can be distinguished from the second surface region 100A2, it can be made less prominent, and a laminate 100 that can suppress the impairment of the unity of the design can be manufactured. Further, since the surface texture is adjusted using the surface texture adjusting sheet 120, it is not necessary to process the surfaces of the hot press plates 71 and 72. In addition, since the surface texture adjusting sheet 120 can be easily manufactured by printing, the laminate 100 can be manufactured simply and inexpensively. Note that the manufacturing method of the laminate 110 can also obtain the same effect as the manufacturing method of the laminate 100.

Examples

[0088] In order to explain the present invention in detail, examples will be given below, but the present invention is not limited to these descriptions.

[0089] <Example 1> First, a surface texture adjustment sheet was prepared. The surface texture adjustment sheet was produced as follows. An uncured layer was formed by offset printing using ultraviolet-curable offset printing ink (trade name "UV Carton Medium", manufactured by DIC Graphics Co., Ltd.) on the surface of a foamed polyethylene terephthalate sheet with a thickness of 100 μm as a base material layer (trade name "Crisper (registered trademark) K2323", manufactured by Toyobo Co., Ltd., arithmetic mean roughness Ra: 0.5 μm). Then, the uncured layer was irradiated with ultraviolet rays and cured to form a base layer with a thickness of 1 μm.

[0090] After forming the base layer, an uncured layer with four colors of yellow, red, blue, and black overlaid by offset printing was formed using ultraviolet-curable offset printing ink (trade name "UV Carton (process color)", manufactured by DIC Graphics Co., Ltd.) on a part of the base layer. Then, the uncured layer was irradiated with ultraviolet rays and cured to form a pattern layer with a thickness of 1 μm.

[0091] After forming the pattern layer, an uncured layer was formed by offset printing using ultraviolet-curable offset printing ink (trade name "UV Carton M OP Varnish", manufactured by DIC Graphics Co., Ltd.) on the pattern layer and on the area of the base layer where the pattern layer does not exist. Then, the uncured layer was irradiated with ultraviolet rays and cured to form a release layer with a thickness of 1 μm. Thus, a surface texture adjustment sheet with a thickness of 3 μm was obtained.

[0092] In addition, a laminate precursor was prepared. The laminate precursor was produced as follows. A transfer sheet having a printing layer with a thickness of 5 μm, an upper transparent sheet with a thickness of 50 μm, an upper core sheet with a thickness of 360 μm, a lower core sheet with a thickness of 360 μm, and a lower transparent sheet with a thickness of 50 μm were laminated in this order between heat press plates. The transfer sheet was arranged such that the printing layer faced the upper transparent sheet side. Then, in this state, the laminate precursor was heated to 120°C and pressed at 2 MPa to be integrated, and the printing layer, which is a transparent plastic sheet, was transferred onto the transparent sheet to obtain the laminate precursor.

[0093] Next, a surface quality adjustment sheet and the laminate precursor were placed between heat press plates. The surface quality adjustment sheet was laminated on the laminate precursor such that the release layer contacted the printing layer. Then, in this state, the laminate precursor was heated to 120°C and pressed at 2 MPa to obtain a laminate having a first surface region and a second surface region.

[0094] After removing the heat press plates and the surface quality adjustment sheet from the laminate, the laminate was punched out to obtain four laminates with a size of 53.98 mm × 85.60 mm.

[0095] <Example 2> In Example 2, four laminates were obtained by the same method as in Example 1, except that a different surface quality adjustment sheet was used. The surface quality adjustment sheet used in Example 2 was produced as follows.

[0096] A foamed polyethylene terephthalate sheet (trade name “Crisper (registered trademark) K2323”, manufactured by Toyobo Co., Ltd., arithmetic mean roughness Ra: 0.5 μm) with a thickness of 100 μm as a base material layer was printed by silk screen printing using an adhesive vinyl chloride-vinyl acetate copolymer-based transparent medium ink for silk screen printing (trade name “VAHS Medium”, manufactured by Showa Ink Co., Ltd.) to form an underlayer with a thickness of 5 μm.

[0097] After forming the underlayer, an uncured layer was formed by offset printing using an ultraviolet-curable offset printing ink (trade name "UV Carton M OP Copy Card Varnish", manufactured by DIC Graphics Corporation) on the underlayer. Then, the uncured layer was irradiated with ultraviolet rays and cured to form a medium layer with a thickness of 1 μm.

[0098] After forming the medium layer, an uncured layer with four colors of yellow, red, blue, and black overlaid was formed by offset printing using an ultraviolet-curable offset printing ink (trade name "UV Carton (Process Color)", manufactured by DIC Graphics Corporation) on a part of the medium layer. Then, the uncured layer was irradiated with ultraviolet rays and cured to form a pattern layer with a thickness of 1 μm.

[0099] After forming the pattern layer, an uncured layer was formed by offset printing using an ultraviolet-curable offset printing ink (trade name "UV Carton M OP Varnish", manufactured by DIC Graphics Corporation) on the part of the pattern layer of the pattern layer and the underlayer where the pattern layer does not exist. Then, the uncured layer was irradiated with ultraviolet rays and cured to form a release layer with a thickness of 1 μm.

[0100] After further forming the release layer, an uncured layer was formed by offset printing using an ultraviolet-curable offset printing ink (trade name "UV Carton M OP Varnish", manufactured by DIC Graphics Corporation) on the release layer. Then, the uncured layer was irradiated with ultraviolet rays and cured to form a release layer with a thickness of 1 μm. Thereby, a sheet for surface quality adjustment with a thickness of 108 μm was obtained.

[0101] <Comparative Example 1> In Comparative Example 1, four laminates were obtained by the same method as in Example 1 except that the sheet for surface quality adjustment was not used. In Comparative Example 1, the heat press plate was arranged so that the surface of the heat press plate contacted the printing layer of the laminate precursor, and heat pressing was performed.

[0102] <Comparative Example 2> In Comparative Example 2, four laminates were obtained in the same manner as in Comparative Example 1, except that the surface of the hot press plate was made slightly matte by shot blasting.

[0103] <Comparative Example 3> In Comparative Example 3, four laminates were obtained in the same manner as in Comparative Example 1, except that the surface of the hot press plate was made matte by shot blasting.

[0104] <Comparative Example 4> In Comparative Example 4, four laminates were obtained in the same manner as in Comparative Example 1, except that the surface of the hot press plate was made super matte by shot blasting.

[0105] <Measurement of 60-degree specular glossiness> The 60-degree specular glossiness of the surfaces of the four laminates according to Examples 1 and 2 and Comparative Examples 1 to 4 was measured. Specifically, using a gloss meter (product number "IG-320", manufactured by Horiba, Ltd.), the 60-degree glossiness of the first surface area and the second surface area provided on the printing layer, which is the outermost surface, of the four laminates was measured respectively. From the specular glossiness - measuring method of JIS Z8741:1997, the incident angle of light was 60°, and measurement method type 3 was adopted. For setting the reference value, while pressing the reference value input key, the DATA IN key was pressed to set the reference value to 90. Note that the 60-degree specular glossiness of the first surface area in the laminates according to Examples 1 and 2 was measured at two locations, the 60-degree specular glossiness of the second surface area in the laminate according to Example 1 was measured at two locations, and the 60-degree specular glossiness of the second surface area in the laminate according to Example 2 was measured at one location. The area of the measurement part was an elliptical part of 12 mm × 6 mm. The measurement data shown in Table 1 are the average values when each measurement location was measured twice. Also, the printing layer, which is the measurement surface of the four laminates according to Examples 1 and 2 and Comparative Examples 1 to 4, is a transparent plastic sheet, but since the upper core sheet with a thickness of 360 μm is white, reflection from the back surface was prevented and measurement could be performed.

[0106] <Measurement of arithmetic mean roughness Ra> The arithmetic mean roughness Ra of the surfaces of the four laminates according to Examples 1 and 2 was measured. Specifically, using a surface roughness meter (also called a surface roughness measuring instrument) (product number "SURFCOM480A", manufactured by Tokyo Seimitsu Co., Ltd.), the arithmetic mean roughness Ra of the first surface area and the second surface area of the four laminates was measured at two points each. At the time of measurement, the system settings during measurement were set to "roughness measurement", the tilt correction was set to "both ends", the filter was set to "Gaussian", the measurement speed was set to 0.6 mm / sec, the cut-off value was set to 0.8 mm, and the reference length (sampling length) lr was set to 0.8 mm.

[0107] <Visual evaluation> The surfaces of the laminates according to Examples 1 and 2 and Comparative Examples 1 to 4 were visually confirmed under an environment of fluorescent lamp illumination equivalent to 1000 lux. The evaluation results were as follows. Regarding the comparative examples, the surface of the laminate according to Comparative Example 1 was used as the first surface area, and the surfaces of the laminates according to Comparative Examples 2 to 4 were used as the second surface area for evaluation. A: The second surface area could be visually distinguished from the first surface area, and the second surface area was not prominent compared to the first surface area. B: The second surface area could be visually distinguished from the first surface area, and the second surface area was prominent compared to the first surface area. C: The second surface area could not be visually distinguished from the first surface area.

[0108] The results are shown in Tables 1 to 3 below.

Table 1

[0109]

Table 2

[0110]

Table 3

[0111] As shown in Table 3, since the value of the 60-degree specular gloss of the surface of the laminate according to Comparative Example 1 was high, the ratios of the 60-degree specular gloss of the surfaces of the laminates according to Comparative Examples 2 to 4 to the 60-degree specular gloss of the surface of the laminate according to Comparative Example 1 were extremely low. For this reason, the second surface region could be visually distinguished from the first surface region, but the second surface region stood out with respect to the first surface region. On the other hand, as shown in Table 1, in the laminates according to Examples 1 and 2, since the ratio of the 60-degree specular gloss of the second surface region to the 60-degree specular gloss of the first surface region was within the range of 0.40 or more and 0.97 or less, the second surface region could be visually distinguished from the first surface region, and the second surface region did not stand out with respect to the first surface region.

Explanation of Signs

[0112] 10, 50, 100, 110... laminate 10A, 50A, 100A, 110A... surface 10A1, 50A1, 100A1, 110A1... first surface region 10A2, 50A2, 100A2, 110A2... second surface region 60, 120... sheet for surface quality adjustment 61... base material layer 61A... surface 62, 121... underlayer 63... pattern layer 64... release layer 71, 72... hot press plate 10A1... back surface 80, 90... laminate precursor 80B, 90A... surface

Claims

1. A laminate having a plastic sheet, wherein the surface of the laminate has at least a first surface region and a second surface region having a 60-degree specular glossiness lower than that of the first surface region, the second surface region is present in the same layer as the layer having the first surface region, the ratio of the 60-degree specular glossiness of the second surface region to the 60-degree specular glossiness of the first surface region is 0.40 or more and 0.97 or less.

2. The laminate according to claim 1, wherein the 60-degree specular glossiness of the first surface region is 17 or more and 40 or less.

3. The laminate according to claim 1, wherein the laminate further comprises a printed layer, and the surface of the laminate is the surface of the printed layer.

4. The laminate according to claim 1, wherein the surface of the laminate is the surface of the plastic sheet.

5. The laminate according to claim 1, wherein the laminate is an IC card.

6. A method for manufacturing a laminate having a plastic sheet and having two or more surface regions with different 60-degree specular glossinesses on the surface, comprising: preparing a surface texture adjusting sheet including a base material layer having irregularities on the surface, a pattern layer partially provided on the surface of the base material layer, and a release layer provided on the pattern layer and in a region where the pattern layer does not exist on the base material layer; heating and pressing the laminate precursor in a state where the laminate precursor and the surface texture adjusting sheet are overlapped so that the release layer of the surface texture adjusting sheet contacts the surface of the laminate precursor having a plastic sheet; The method for manufacturing a laminate.

7. The method for manufacturing a laminate according to claim 6, wherein the surface texture adjusting sheet further comprises an underlayer provided between the base material layer and the pattern layer and between the base material layer and the release layer in a region where the pattern layer does not exist.

8. The method for manufacturing a laminate according to claim 7, wherein the underlayer is formed by offset printing.

9. The method for manufacturing a laminate according to claim 7, wherein the underlayer is formed by silk screen printing.

10. The method for manufacturing a laminate according to claim 6, wherein the base material layer is a foamed polyester resin sheet.

11. The method for manufacturing a laminate according to claim 6, wherein the laminate precursor further comprises a printed layer, and the surface of the laminate precursor is the surface of the printed layer.

12. The manufacturing method of the laminate according to claim 6, wherein the surface of the laminate precursor is the surface of the plastic sheet.

13. The manufacturing method of the laminate according to claim 6, wherein the sheet for surface quality adjustment is transparent and has a mark for alignment with the laminate precursor.

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