JP2017012697A - Composite decorative sheet for game machine and game machine equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite decorative sheet which can not only have air removed well in manufacturing, but can also have small bubbles due to outer gas suppressed from being generated even when performing an environmental test under the high temperature, and meanwhile, can have smoothness of the front surface suppressed from being degraded, and to provide a game machine equipped with the composite decorative sheet.SOLUTION: A decorative sheet 10 for a game machine is adhered on the front surface side of a synthetic resin substrate 20 of a game machine. The decorative sheet 10 is formed of a composite decorative sheet 10 which includes: two sheets being an easily-deformed sheet 11 and a hardly-deformed sheet 21 which have different deformation properties; an adhesive layer 23 for laminating the two sheets and adhering the sheets; and a pattern layer 22. The hardly-deformed sheet 21 has a thickness 1.5 times that of the PET-made easily-deformed sheet 11. The pattern layer 22 has irregularities with a thickness difference of 10 μm or more formed thereon, and the adhesive layer 23 is formed of a photo-curable adhesive.SELECTED DRAWING: Figure 5

Description

The present invention relates to a composite decorative sheet and a gaming machine used in gaming machines such as pachinko gaming machines and pachislot gaming machines.

Various improvements have been proposed for decorative plates used in gaming machines such as pachinko and pachislot machines. In recent years, in particular, there is a tendency for high candle performance to attract the attention of players, and decorative boards with various improvements have been proposed, such as the gaming machines shown in Patent Documents 1 to 3. ing.

In Patent Document 1, a light-shielding ink layer and a colored ink layer are applied by printing on the front side of a concave-convex surface mirror sheet that enhances the candle performance of a decorative plate, and a transparent surface made of PET (polyethylene terephthalate) resin is formed on the printed surface. A sheet in which a light-sensitive sheet is bonded via an ultraviolet curable adhesive is disclosed. The concavo-convex mirror sheet is a non-transmissive sheet, and it is difficult to accurately position and securely bond the translucent sheet to the printed sheet, and a solution for this is required.

Patent Document 2 discloses a laminate in which at least (i) a pattern layer, a metal thin film pattern layer, and a mount, or (ii) a metal thin film pattern layer, a pattern layer, and a mount are sequentially laminated on the rear candle of the transparent resin sheet. Furthermore, it is a decorative board for gaming machines in which a board is bonded to the outer front surface of the mount, and the metal thin film pattern layer is offset printed with an ultraviolet curable adhesive (adhesive glue) for metal thin film transfer, and then UV cured. A decorative board for a gaming machine, characterized in that it is a layer formed by transferring a metal thin film onto a mold adhesive (adhesive glue) and then curing the ultraviolet curable adhesive (adhesive glue) with ultraviolet irradiation means. It is what we propose. More specifically, this Patent Document 2 is to transfer a metal thin film of a metal thin film pattern layer by applying an ultraviolet curable adhesive (adhesive glue) for metal thin film transfer by a cold foil system. The cold foil system prints and applies UV-curing adhesive (adhesive glue) for metal thin film transfer while transferring a web-like continuous sheet between multiple rollers. There is a possibility that it may occur slightly, and it is difficult to divert to Patent Document 1 where it is necessary to accurately align the sheet and the panel.

Further, in Patent Document 3, a first adhesive layer made of an adhesive that adheres to a game board, a first resin film laminated on the upper surface of the first adhesive layer, and an upper surface of the first resin film A printing layer and a second adhesive layer provided; a second resin film laminated on an upper surface of the printing layer and the second adhesive layer; and a hard coat layer laminated on an upper surface of the second resin film. A protective film for a game board is shown. The first resin film and the second resin film are supposed to be the same, and in the examples of the invention, it is shown that a PET film having a thickness of 50 μm is used.

However, when a plurality of printed layers or a metal thin film layer is added in order to enhance the candle property, the difference in thickness of the unevenness with the plain portion becomes large.
As a result, the following problem occurs.

1) At the time of bonding with the substrate, air enters and the air cannot be extracted well.
2) Even if the air can be successfully extracted and bonded, if a high-temperature environmental test is performed, an outer gas is generated from a synthetic resin layer such as polycarbonate on the substrate, and this gas becomes a small bubble to form a substrate. And the first resin film.

3) Unevenness occurs in the first resin film and the hard coat layer on the front side, which is the running surface of the game ball, and the smoothness decreases.

Japanese Patent No. 4819108 JP 2010-68916 A JP 2014-3992 A

In addition to being able to vent the air well during production, the present invention can suppress the generation of small bubbles due to the outer gas even when a high-temperature environmental test is performed, and also suppress the deterioration of the smoothness of the front surface. It is an object of the present invention to provide a composite decorative sheet that can be manufactured and a gaming machine equipped with the same.

The present invention relates to a decoration sheet for a gaming machine that is bonded to the front side of a synthetic resin substrate of a gaming machine and constitutes the front surface of the gaming machine, wherein the decoration sheet is a deformation of an easily deformable sheet and a hardly deformable sheet. Two sheets having different properties, an adhesive layer for laminating and laminating the two sheets, and a pattern layer printed on a laminating surface of at least one of the two sheets Composed of a composite decorative sheet, the hardly deformable sheet is disposed on the front side of the gaming machine, the rear surface side of the easily deformable sheet is bonded to the front side of the synthetic resin substrate, The easily deformable sheet has a thickness of 1.5 times or more, and the easily deformable sheet is a sheet made of PET. The pattern layer includes the presence or absence of printing, the number of pattern layers, and the type of printing ink. , Print format Concavities and convexities caused by differences in expression form such as differences are formed on the bonding surface side, the concavities and convexities have a thickness difference of 10 μm or more, and the adhesive layer is a photo-curing type Provided is a composite decorative sheet for a gaming machine characterized by being formed of an adhesive.

The difficult-to-deform sheet can be implemented as including a sheet made of CAB or PET and having a thickness of 75 to 300 μm.
The photocurable adhesive layer can be implemented as having a thickness of 10 to 20 μm.

More preferably, the easily deformable sheet is a PET sheet having a thickness of less than 50 μm.
The present invention provides a gaming machine characterized in that the composite decorative sheet is bonded to the front surface of a synthetic resin substrate with the easily deformable sheet on the rear side.

In addition, each sheet | seat can also be comprised with one film, and the sheet | seat which laminated | stacked the several film may be sufficient. Accordingly, in the present invention, the sheet should be understood to include a film and a sheet.

In addition to being able to vent the air well during production, the present invention can suppress the generation of small bubbles due to the outer gas even when a high-temperature environmental test is performed, and also suppress the deterioration of the smoothness of the front surface. It was possible to provide a composite decorative sheet and a gaming machine equipped with the composite decorative sheet.

An example of the method of manufacturing the composite decoration sheet of this invention is shown, (A) is explanatory drawing of a mounting process, (B) is a perspective view of a board | substrate. The same method is shown, (A) is a plane explanatory view of the position fixing step, (B) is an enlarged side view of the main part. The same method is shown, (A) is plane explanatory drawing of an air exclusion process, (B) is the principal part expanded side view. The same method is shown, (A) is a plane explanatory view of the curing step, (B) is an enlarged side view of the main part. Sectional drawing of the composite decoration sheet which concerns on embodiment of this invention, and a game machine provided with the same.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, with reference to FIG. 5, the configuration of the completed state of the pachinko gaming machine will be described in the embodiment of the present invention.
The gaming machine includes a gaming board 30 that constitutes most of the front surface of the gaming machine, and the gaming board 30 is obtained by bonding the composite decorative sheet 10 to the front surface of a substrate 20 made of synthetic resin.

This composite decorative sheet 10 is obtained by bonding and fixing a hardly deformable sheet 21 with a photo-curing adhesive 23 on the front surface side (upper side in the figure) of the easily deformable sheet 11 that is a permeable sheet. The hardly deformable sheet 21 is a non-transmissive sheet that does not transmit ultraviolet rays by being decorated by printing the pattern layer 22 or providing a transfer foil on the rear surface side (lower side in the figure), and the composite decorative sheet 10 as a whole. Then, the easily deformable sheet 11, the pattern layer 22, the photocurable adhesive 23, and the hardly deformable sheet 21 are laminated from the rear surface side to the front surface side.

In this composite decorative sheet 10, the hardly deformable sheet 21 forms a running surface of the game ball, and nails (not shown) for restricting the running path of the game ball are driven from the front side thereof, and the easily deformable sheet 21. 11 is fixed to the substrate 20 on the rear surface side.
The picture layer 22 is not shown in FIG. Moreover, each figure shows only a layer structure, The thickness is not shown correctly.

The substrate 20 is a translucent panel made of acrylic resin such as polymethyl methacrylate resin or polycarbonate resin. The substrate 20 is a self-supporting rigid panel having a square or rectangular shape with a side of about 600 mm and a thickness of about 10 mm. The manufacturing method and material of the substrate 20 are not particularly limited as long as they can transmit ultraviolet rays, and may be a product obtained by cutting an extruded product or a molded product.

The substrate 20 and the composite decorative sheet 10 can be bonded together with an adhesive 12. For this bonding, a method that has been widely used in the past can be used. The adhesive 12 may be applied to the rear surface of the completed composite decorative sheet 10, and the release sheet 13 is used as an adhesive 12 for storage and transportation of the completed composite decorative sheet 10. The release sheet 13 may be removed and the substrate 20 and the composite decorative sheet 10 may be bonded together with the adhesive 12. Moreover, the adhesive 12 and the release sheet 13 may be laminated in advance on the rear surface of the easily deformable sheet 11 constituting the composite decorative sheet 10, and the composite decorative sheet 10 may be formed by the easily deformable sheet 11. .

Next, the composite decorative sheet 10 is a composite sheet including an easily deformable sheet 11 and a hardly deformable sheet 21. These sheets, like the substrate 20, are square or rectangular with sides of about 600 mm.
PET resin (polyethylene terephthalate resin) is used for the easily deformable sheet 11. The easily deformable sheet 11 is thinner and more easily deformed than the hardly deformable sheet 21, and it is appropriate that the easily deformable sheet 11 has a thickness of less than 60 μm, more desirably less than 50 μm. However, the thickness of 25 μm or more is appropriate in that the unevenness caused by the pattern layer 22 is not exposed to the rear side more than necessary.

The hardly deformable sheet 21 is made of PET resin or CAB resin (cellulose acetate butyrate resin) and has a thickness of 1.5 times or more that of the easily deformable sheet 11. Specifically, a synthetic resin sheet having a thickness of less than about 300 μm is appropriate, and in particular, a sheet having a thickness of less than 75 to 250 μm is appropriate. Furthermore, when it is made of PET resin, it is preferably around 100 μm (75 to 150 μm), and when it is made of CAB resin, it is preferably 200 to 250 μm.

In general, the planar shape of the hardly deformable sheet 21 is transparent, but the transparency of the embodiment of the present invention is not limited. The easily deformable sheet 11 and the hardly deformable sheet 21 can be provided in the form of a continuous web. However, when the two companies are bonded, it is appropriate that the sheet is cut into the above-described planar shape.

Moreover, the hard-to-deform sheet 21 does not have to be a single layer, and for example, a hard resin layer (not shown) may be coated on the front surface of the PET resin. For this hard coat layer, a resin mainly composed of a thermosetting resin or an ultraviolet curable resin can be used, and examples thereof include acrylic resins, polyester resins, polyurethane resins, and the like. Urethane acrylate, polyester Those having an acrylic group or a methacrylic group at the molecular end, such as acrylate, epoxy acrylate, and urethane methacrylate, can be suitably used.

A pattern layer 22 of the composite decorative sheet 10 is formed on the rear surface side of the hardly deformable sheet 21 by printing or the like. In addition to the rear surface side of the hardly deformable sheet 21, it can be formed on the front surface side of the easily deformable sheet 11, or can be formed only on the front surface side of the easily deformable sheet 11. It is formed on the bonding surface with the deformation sheet 11. However, processing only on the rear surface side of the hardly deformable sheet 21 is advantageous in eliminating the unevenness described below.

Various inks can be used as the ink for the picture layer 22 on the condition that the ink can be printed on the hardly deformable sheet 21, and a printing method such as silk screen printing or gravure printing can be freely selected. Further, for example, it is possible to combine offset printing and silk printing.

In addition to ink, an optical film provided with a holographic means such as a metal thin film formed by a metal foil or the like, a hologram foil, a hologram film, a hologram seal, or the like can also be used.
The pattern layer 22 is formed on the entire surface. Depending on the expression form, unevenness caused by differences in the expression form such as presence / absence of printing, the number of pattern layers, the type of printing ink, and the difference in printing form may be partially present. , Which is formed on the bonding surface side, and has a thickness difference of 10 μm or more (about 10 to 30 μm).

The hardly deformable sheet 21 and the easily deformable sheet 11 are bonded together by an adhesive layer. This adhesive layer is formed of a photo-curing adhesive 23 such as a UV adhesive, and is irradiated with light energy such as ultraviolet energy to be polymerized and cured in a short time by the action of a photo-initiator or the like. . As chemical reaction species for polymerization, those using radical polymerization and those using ionic polymerization are known. Examples of the radical polymerization type include acrylate radical polymerization such as epoxy modification, urethane modification, and silicone modification. Examples of ionic polymerization include epoxy cation polymerization. Can be used. The adhesive layer suitably has a thickness of about 10 to 30 μm, and desirably has a thickness of 10 to 20 μm. The photocurable adhesive 23 is applied to the whole of the unevenness before curing, and thereafter By applying light energy and curing, the appearance of irregularities on the easily deformable sheet 11 is reduced.

With the above layer structure, the unevenness can be suppressed and appear on the entire surface side and the rear surface side. When the irregularities appear on the rear surface side of the composite decorative sheet 10, it adversely affects the bonding with the substrate 20, it becomes difficult to suppress the outer gas generated from the substrate 20, and this gas appears as small bubbles. End up. As a countermeasure, if the sheet on the rear surface side is thickened, irregularities appear on the front surface side of the composite decorative sheet 10, and the smoothness of the running surface of the game ball is lowered. Therefore, if the front and rear seats are 50 μm as in Patent Document 3, both the problems of poor outer gas suppression and smoothness and deterioration of the running surface of the game ball are likely to occur, and it is difficult to solve them. Become.

Therefore, it is suppressed by the hardly deformable sheet 21 to reduce the smoothness of the running surface of the game ball, the unevenness is eased by the easily deformable sheet 11, and the unevenness of the unevenness is reduced before the photocurable adhesive 23 is cured. The above-mentioned problems are solved all at once by applying to the whole, then applying light energy and curing to reduce the appearance of irregularities on the easily deformable sheet 11.

Note that using CAB resin (especially 200 to 250 μm thick) for the hardly deformable sheet 21 has an advantage that nailing is relatively easy, but has the adverse effect of expanding and contracting in the plane direction of 1 to 2 mm due to temperature change. There is a risk of birth. However, the use of a PET resin sheet as the easily deformable sheet 11 also has the advantage that its expansion and contraction can be stopped.

(Description of manufacturing process)
Said composite decoration sheet 10 is manufactured through each process of an application | coating process, a mounting process, a position fixing process, an air exclusion process, and a hardening process in order. Hereinafter, each of these steps will be described together with a manufacturing apparatus.

(Coating process)
The application step is a step of applying the photocurable adhesive 23 to at least one of the rear surface of the hardly deformable sheet 21 that is a non-permeable sheet and the front surface of the easily deformable sheet 11 that is a permeable sheet.

In this process, various means for applying a liquid to a sheet or panel can be adopted. For example, it can be applied by a printing method such as silk screen or gravure printing, spray coating, airless coating, roll coating, brush coating. It may be done by roller coating. The film thickness of the photocurable adhesive 23 varies depending on the type, but is preferably about 10 to 30 μm, and more preferably 10 to 20 μm.

(Installation process)
The placing step is a step of placing the hardly deformable sheet 21 on the front surface side of the easily deformable sheet 11, and the front surface (upper surface) of the easily deformable sheet 11 and the rear surface (lower surface) of the hardly deformable sheet 21. The photocurable adhesive 23 is applied to any of the above, and the easily deformable sheet 11 and the hardly deformable sheet 21 are arranged above and below the photocurable adhesive 23.

In this placing step, the easily deformable sheet 11 and the hardly deformable sheet 21 are correctly positioned and overlapped. Specifically, as shown in FIG. 1, the easily deformable sheet 11 is placed on a placing table 41 provided with linear positioning portions 42 on two orthogonal sides, and the hardly deformable sheet 21 is placed thereon. Is placed. At that time, by placing the two sides of the easily deformable sheet 11 and the hardly deformable sheet 21 in contact with the positioning portion 42 accurately, the easily deformable sheet 11 and the hardly deformable sheet 21 are correctly positioned and stacked. Can do.

(Position fixing process)
The position fixing process is a process of fixing a part of the easily deformable sheet 11 and the hardly deformable sheet 21 after the placing process, and the easily deformable sheet 11 and the hardly deformable sheet 21 are correctly positioned by this process. It is fixed under the condition (see FIGS. 2A and 2B). This fixing is performed so that the easily deformable sheet 11 and the hardly deformable sheet 21 do not deviate in the next air exhausting step. In the air exclusion process, as shown in FIG. 3, the easily deformable sheet 11 and the hardly deformable sheet 21 are moved in one direction relative to a pressing member such as a roller 45 or a spatula. Accordingly, in the position fixing step, the easily deformable sheet 11 and the hardly deformable sheet 21 are fixed as one position (right side in the figure) corresponding to the above-mentioned relative movement as the position fixing side 31, and the other three sides. Becomes a free side 33 that is not fixed. The fixing at the position fixing side 31 may be performed linearly, but is performed for the purpose described above. In this example, a plurality of dot-like adhesive portions 32 are formed along the position fixing side 31. Thus, the position is fixed.

More specifically, by irradiating the easily deformable sheet 11 and the hardly deformable sheet 21 placed on the mounting table 41 (not shown in FIG. 2) with ultraviolet rays from the pre-irradiation device 43, An adhesive portion 32 is formed. The adhesion part 32 can be implemented, for example, as a circle having a diameter of about 5 to 10 mm, and the ultraviolet rays are emitted from the pre-irradiation device 43 including the LED for ultraviolet irradiation arranged at a position several cm away from the hardly deformable sheet 21. By irradiating for several seconds, the photocurable adhesive 23 is cured. Moreover, it is also possible to provide the adhesive portion 32 having a predetermined width along the position fixing side 31 using the linear pre-irradiation device 43. In this way, a separate adhesive is used to fix the position using the photo-curing adhesive 23 applied in advance in order to bond the easily deformable sheet 11 and the hardly deformable sheet 21 in the curing step described later. Is advantageous because it does not need to be applied to fix the position.

It is also desirable to arrange the belt-like pressing body 44 along the position fixing side 31 so that the easily deformable sheet 11 and the hardly deformable sheet 21 do not move during the ultraviolet irradiation. It is desirable that the pressing body 44 is made of a transparent body so as to transmit the ultraviolet rays from the pre-irradiation device 43 disposed above. In addition, when the pressing body 44 and the pre-irradiation device 43 are connected and the pressing body 44 presses the hardly deformable sheet 21, the interval between the hardly deformable sheet 21 and the pre-irradiation device 43 is set to the predetermined interval. It may be maintained.

(Air exclusion process)
In the air exclusion process, the easily deformable sheet 11 and the hardly deformable sheet 21 are moved by relatively moving the pressing means such as the roller 45 toward the free side 33 located at the opposite position from the fixed position fixed side 31. This is a step of performing degassing during the period (see FIGS. 3A and 3B). Since the photocurable adhesive 23 cannot be cured well in the presence of air, it is necessary to eliminate the bubbles 24 between the easily deformable sheet 11 and the hardly deformable sheet 21, and defoaming is performed by the roller 45. . It is important that the easily deformable sheet 11 and the hardly deformable sheet 21 maintain an accurate position at the time of the air exclusion process. Therefore, the positional shift is suppressed by the above-described position fixing process. This displacement can also be achieved, for example, by pressing with a pressing body. However, as described above, the photocurable adhesive 23 is partially cured by the positioning portion 42, so that there is nothing on the easily deformable sheet 11 and the easily deformable sheet 11 and the hardly deformable sheet 21. Since the position fixing side 31 can be fixed, the relative movement of the roller 45 can be performed smoothly. In addition, since the adhesive portion 32 of the position fixing side 31 is a small dot or a strip portion of 10 mm or less, even if the portion is discarded at the final stage, it is only necessary to discard a thin strip portion of 10 mm or less. It does not occur. In addition, since both the adhesion in the above-described position fixing step and the adhesion in the curing step described later are both cured with the same photocurable adhesive 23 with ultraviolet rays, both of them can be obtained in a uniform manner. It is also possible to use it as a product without discarding the adhesive portion 32 in the position fixing step. The pressing means may be one that presses 21 from above without rotating a scraper or the like in addition to the rotatable roller 4.

The roller 45 is moved while pressing the upper surface of the hardly deformable sheet 21 by the roller 45 with the position fixing side 31 as the upper side and the opposing free side 33 as the lower side. At that time, the roller 45 may be moved while the easily deformable sheet 11 and the hardly deformable sheet 21 are stopped, or the easily deformable sheet 11 and the hardly deformable sheet 21 may be moved while the roller 45 is stopped. Both of them may be moved. The roller 45 may be in a freely rotating state or may rotate. Instead of the roller 45, it is also possible to change the material such as a spatula-like plate member that can press the easily deformable sheet 11 against the hardly deformable sheet 21 and bleed air.

(Curing process)
The curing step is a step of curing the entire photocurable adhesive 23 interposed on the entire surface of the easily deformable sheet 11 and the hardly deformable sheet 21. Specifically, the entire surface of the easily deformable sheet 11 and the hardly deformable sheet 21 is moved by moving the ultraviolet irradiation device 55 having an irradiation range equal to or larger than the entire width of the easily deformable sheet 11 and the hardly deformable sheet 21. Irradiate with UV light. At this time, in this example, the easily deformable sheet 11 is moved in a state where the hardly deformable sheet 21 is stacked on the upper surface. However, since the pattern layer 22 is printed on the hardly deformable sheet 21 in advance, when the ultraviolet ray is irradiated only from above, the ultraviolet ray reaches the photocurable adhesive 23 by the pattern layer 22 of the hardly deformable sheet 21. The part which does not occur arises. Therefore, by irradiating ultraviolet rays from below, the ultraviolet rays reach the entire surface of the photo-curable adhesive 23 through the inside of the easily deformable sheet 11 having the entire ultraviolet ray permeability.

In order to efficiently irradiate the ultraviolet rays from below, as shown in FIGS. 4A and 4B, an upstream transfer surface 53 and a downstream transfer surface composed of an upstream belt conveyor 51 and a downstream belt conveyor 52 are provided. 54, with the hardly deformable sheet 21 being stacked on the easily deformable sheet 11, and a gap 56 is provided between the upstream transfer surface 53 and the downstream transfer surface 54. An ultraviolet irradiation device 55 is disposed below the front side. By irradiating ultraviolet rays upward from the ultraviolet irradiation device 55, the photocurable adhesive 23 can be cured evenly by sequentially curing the photocurable adhesive 23, and thereby the composite decorative sheet can be cured uniformly. 10 is completed. As the moving device, the belt conveyors 51 and 52 described above can be used, and a roller conveyor or another conveyor may be used. Further, the easily deformable sheet 11 and the hardly deformable sheet 21 may be mounted on a mounting table that transmits ultraviolet light, and the ultraviolet irradiation device 55 may be moved relatively. More specifically, the mounting table. And at least one of the ultraviolet irradiation device 55 may be relatively moved by a moving device such as a cylinder or a gear.

DESCRIPTION OF SYMBOLS 10 Composite decoration sheet 11 Easily deformable sheet 12 Adhesive 13 Release sheet 20 Substrate 21 Difficult sheet 22 Picture layer 23 Photocurable adhesive (adhesive layer)

Claims (5)

In the decorative sheet for gaming machines that is bonded to the front side of the synthetic resin substrate of the gaming machine and constitutes the front side of the gaming machine,
The decorative sheet includes at least one of two sheets having different deformability between the easily deformable sheet and the hardly deformable sheet, an adhesive layer that stacks and bonds the two sheets, and the two sheets. Composed of a composite decorative sheet having a pattern layer printed on the bonding surface of the sheet,
The hard-to-deform sheet is disposed on the front side of the gaming machine, the rear side of the easy-to-deform sheet is bonded to the front side of the synthetic resin substrate,
The hardly deformable sheet has a thickness of 1.5 times or more than the easily deformable sheet,
The easily deformable sheet is a sheet made of PET,
The pattern layer is formed on the bonding surface side with unevenness caused by differences in expression forms such as presence / absence of printing constituting the pattern layer, number of pattern layers, type of printing ink, and difference in printing format. ,
The unevenness has a thickness difference of 10 μm or more,
The composite decorative sheet for gaming machines, wherein the adhesive layer is formed of a photo-curing adhesive. The composite decorative sheet for gaming machines according to claim 1, wherein the hardly deformable sheet includes a sheet made of CAB or PET and having a thickness of 75 to 300 µm. The composite decorative sheet for a technical machine according to claim 1 or 2, wherein the photocurable adhesive layer has a thickness of 10 to 30 µm. The composite decorative sheet for a technical machine according to any one of claims 1 to 3, wherein the easily deformable sheet is a PET sheet having a thickness of less than 50 µm. A gaming machine, wherein the composite decorative sheet according to any one of claims 1 to 4 is bonded to a front surface of a synthetic resin substrate with the easily deformable sheet as a rear surface side.

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