JP2014110851A - Game board film, game plate, method for manufacturing game board film, and method for joining game board film to game board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a game board film capable of accurately disposing a resin sheet in a desired position on a game board to bond the resin sheet, and capable of shortening manufacturing time, and to provide a game plate, a method for joining the game board film, and a method for manufacturing the game board film.SOLUTION: A game board film mainly includes, a release film 10, a bonding film 20, and a protective film 30. The bonding film 20 includes an adhesive layer 40, a print layer 50, a synthetic resin film 60, and a hard coat layer 70 from a lower layer.

Description

  The present invention relates to a game board film used for a game board of a game machine using a game ball such as a pachinko game machine, an arrangement ball game machine, or a sparrow ball game machine as a game medium, and a game board using the game board film. The present invention relates to a method for producing a game board film and a method for bonding the game board film to the game board.

  Conventionally, a game board of a pachinko gaming machine is provided with two guide rails for guiding a game ball to the game area, and in the game area surrounded by the guide rail, game parts such as a symbol variation display device and a winning device are provided. Arranged. Further, obstacle nails, windmills and the like are planted around these game parts. In this way, a change is given to the fall path of the game ball falling in the game area, and the entertainment is improved.

  In recent years, a game board made of a synthetic resin has been proposed as a game board instead of a wooden plywood from the viewpoint of environmental protection and design. In particular, a game board molded from a transparent synthetic resin has an advantage that a novel design can be adopted and interest can be enhanced because a symbol variation display device and various decorative members can be arranged on the back side.

  Further, a game board film with decoration is attached to the surface of the game board made of synthetic resin. This game board film is provided for the purpose of decorating the surface of the game board and protecting the game board from collision or wear of game balls rolling in the game area.

  However, if a hole of the same size as the attachment port for attaching the symbol variation display device to the game board film is provided in advance, the attachment port for attaching the symbol variation device is also large, The waist of the game board film becomes weak, and it becomes easy to bend. Therefore, there is a problem that it is difficult to accurately attach the holes provided in the game board film and the mounting holes of the game board.

  In order to improve such a problem, in the invention shown in Patent Document 1, a resin game board having a thin portion that is removed to dispose the symbol variation device is molded by an injection molding method. A technique is disclosed in which a thin sheet portion is cut together with a resin sheet material after a resin sheet material is attached to the surface of the thin portion and the thin portion. This makes it possible to accurately place the resin sheet at a predetermined position on the surface of the game board without causing wrinkles, lifts, or misalignment, similar to a game board that has been molded by an extrusion method and has no processed mounting opening. It becomes possible to stick to.

  However, in the invention disclosed in Patent Document 1, it is not only that the resin sheet is accurately adhered to a predetermined position on the surface of the game board, but is also removed after the resin sheet is adhered. Because it is a thin part, although it has succeeded in reducing the amount of waste material compared to game boards molded by extrusion molding method, it is still necessary to cut the thin part after sticking, It was a big barrier from the viewpoint of productivity.

JP 2011-2335012 A

  Accordingly, the present invention has been made in view of the above problems, and a game board capable of accurately sticking a film for a game board to a desired position of the game board and capable of reducing manufacturing time. An object of the present invention is to provide a game board, a game board using the game board film, a method for producing the game board film, and a method for joining the game board film to the game board.

  The present invention adopts the following means in order to achieve the main object described above.

A film for a game board according to the present invention includes a synthetic resin film and a bonding film comprising an adhesive layer laminated on the synthetic resin film for bonding to the game board,
A protective film bonded to the surface opposite to the adhesive layer to the synthetic resin film,
At least the synthetic resin film of the bonding film is cut from the upper surface to the lower surface at the outer periphery of the portion corresponding to the symbol variation display device mounting opening formed on the game board when bonded to the game board. ,
When the protective film is peeled off, a portion corresponding to the opening portion for attaching the symbol variation display device of the bonding film is removed together with the protective film.

  The protective film for game boards according to the present invention mainly comprises a bonding film that is finally bonded to the surface of the game board, and a protective film that is disposed on the uppermost surface immediately after being bonded to the game board and then peeled off. I have. The bonding film includes a portion corresponding to the symbol variation display device mounting opening formed on the game board (hereinafter, also referred to as “bonding film opening piece”) and a portion of the bonding film other than the bonding film opening piece ( (Hereinafter also referred to as “bonding film outer peripheral portion”), that is, the outer periphery of the bonding film opening piece is cut, and can be separated into the bonding film opening piece and the bonding film outer peripheral portion, respectively. Each of these parts is integrated by a protective film. Therefore, when the protective film is peeled off from the gaming board, the outer peripheral part of the bonding film bonded to the gaming board is peeled off from the protective film, but the bonding film opening piece is removed from the outer peripheral part of the bonding film while being bonded to the protective film. Will be. Thus, the protective film for game boards according to the present invention is such that, at the stage of bonding to the game board, the bonding film opening piece and the bonding film outer peripheral portion are integrated on the entire surface through the protective film. It is possible to prevent the waist of the game board film from becoming weak. Therefore, it is possible to reduce the possibility that the game board film is bent or twisted and difficult to be attached when the game board film is joined. Moreover, it becomes easy to stick to the predetermined position of a game board | substrate correctly, and possibility that a wrinkle and a lift will arise between a game board | substrate and the film for game board | substrates can be reduced. Furthermore, if the game board film according to the present invention is used, it is not necessary to provide a thin part in the opening for mounting the symbol variation display device on the game board as in the prior art. There is no need to reduce the manufacturing time.

  In the game board film of the present invention, an outer periphery of a portion corresponding to a small opening other than the symbol variation display device mounting opening may be cut from the upper surface to the lower surface of the bonding film. That is, a small opening other than the opening for attaching the design variation display device of the bonding film, for example, a portion corresponding to an opening to which a winning device, a windmill or the like, or an obstacle nail is attached (hereinafter also referred to as “bonding film small opening piece”). )) Is cut off. By adopting such a configuration, similarly to the case where the bonding film opening piece is removed when the protective film is peeled off, the bonding film small opening piece is also peeled off while being bonded to the protective film. For this reason, a step of opening the small opening is not required, which contributes to efficiency and cost reduction.

  Furthermore, in the game board film of the present invention, the bonding film and the protective film may have a portion corresponding to a small opening other than the symbol variation display device mounting opening. That is, both the bonding film small opening piece and the corresponding portion of the protective film (hereinafter also referred to as “protective film small opening piece”) have an opening that penetrates at the stage of the game board film. Since the small opening other than the opening for attaching the symbol variation display device has a relatively small opening area, even if it is opened before being attached to the game board, the game board film becomes too weak and the game board There is almost no effect that would interfere with the connection. Therefore, the opening process by a post process can be skipped by opening the bonding film small opening piece and the protective film small opening piece in advance. Moreover, the malfunction that the joining film remains in the small opening part can be prevented.

  Furthermore, in the game board film of the present invention, the bonding film may include a printed layer. By adopting such a configuration, it is possible to provide the game board with a desired pattern formed on the printed layer by simply attaching the bonding film to the game board.

  In addition, the game board of the present invention is characterized in that the game board film described above is bonded to the game board. By adopting such a configuration, the bonding film opening piece of the game board film bonded to the game board can provide a game board that can be removed simply by peeling off the protective film. There is no need to cut parts, reducing waste and contributing to productivity.

  In addition, the method for producing the aforementioned game board film of the present invention includes (1) a step of laminating a protective film on the synthetic resin film, and (2) an outer periphery of a portion corresponding to the opening for attaching the symbol variation display device. And a step of cutting only the bonding film by press working or laser working. By using such a manufacturing method, only the bonding film is cut without cutting the protective film, so that when the protective film is peeled off from the bonding film, the portion corresponding to the opening for attaching the symbol variation display device is removed. A game board film that can be removed can be provided.

  In addition, the method for bonding the game board film to the game board according to the present invention includes (1) a step of bonding the game board film to the game board, and (2) peeling the protective film from the bond film. And removing at least a portion of the bonding film corresponding to the symbol variation display device mounting opening formed on the game board. By adopting such a configuration, after bonding to the game board, when the protective film is peeled off from the bonding film, the portion corresponding to the symbol variation display device mounting opening can be removed quickly and easily, A game board can be provided. Moreover, by employ | adopting this method, when joining the film for game boards to a game board | substrate, it can prevent that the waist of a joining film becomes weak. Therefore, the game board film can be bonded to the game board without bending or twisting the game board film when the game board film is bonded. Therefore, it contributes to quality improvement of the final product.

  According to the game board film of the present invention, the game board film can be accurately placed and pasted at a desired position on the game board, and the manufacturing time can be shortened. A film, a game board, a game board film bonding method, and a game board film manufacturing method can be provided.

FIG. 1 is a front view of the game board 110 according to the first embodiment and a schematic view showing a cross section of the game board film 100 attached to the game board 110. FIG. 2 is a schematic diagram showing a process of producing the game board film 100 according to the first embodiment. FIG. 3 is a schematic diagram illustrating a process of bonding the game board film 100 according to the first embodiment to the game board 110. FIG. 4 is a cross-sectional view of the game board film in each step of joining the game board film 100 according to the first embodiment to the game board 110. FIG. 5 is a schematic view showing a front view of the game board 110 according to the second embodiment and a cross section of the game board film 100 adhered to the game board 110. FIG. 5 is a schematic diagram showing a front view of the game board 110 according to the third embodiment and an end face of the game board film 100 adhered to the game board 110. FIG. 7 is a schematic view showing a front view of the game board 110 according to the fourth embodiment and a cross section of the game board film 100 attached to the game board 110. FIG. 8 is a cross-sectional view of the game board film in each step of joining the game board film 100 according to the fourth embodiment to the game board 110. FIG. 9 is a cross-sectional view showing a modification of the adhesive layer of the game board 110.

  A mode for carrying out the present invention will be described in detail based on the above-described briefly described drawings. In the present specification and claims, “joining” indicates a state where each cannot be easily separated, and various means such as sticking and transfer can be adopted as a joining method. The “film” is a concept including a sheet, and is not particularly distinguished by the thickness, and does not exclude a relatively thick plastic sheet. The “adhesive layer” is a concept including both a layer to which an adhesive or a pressure-sensitive adhesive is applied, unless otherwise specifically used. The “game board” indicates a game board after the game board film is bonded, and the “game board” indicates a game board before the game board film is bonded.

  A game board film 100 according to the first embodiment is shown in FIG. FIG. 1 is a schematic view showing a front view of the game board 110 and a cross section of the game board film 100 adhered to the game board 110. Note that the thickness of the game board film 100 is shown to be considerably thicker than the actual product in order to improve the visibility, and the ratio of the thickness of each layer is the ratio of the thickness of each layer of the actual game board film 100. It does not reflect. As shown in FIG. 1, the game substrate film 100 mainly includes a release film 10, a bonding film 20, and a protective film 30, and the bonding film 20 includes an adhesive layer 40, a printing layer 50, and a synthetic resin from the lower layer. A film 60 and a hard coat layer 70 are provided.

  The release film 10 is for protecting the adhesive layer 40 to be joined to the game board 110, and the adhesive layer 40 is naturally deteriorated before being joined to the game board 110, or dust or the like during transportation or storage. Prevents sticking to a defective product. In the release film 10, the part to be bonded to the game board 110, that is, the release film outer peripheral part 10 b bonded to the bonding film outer peripheral part 24 is peeled off before bonding. The material, thickness, and the like of the release film 10 are not particularly limited, and may be release paper that uses paper as a base material or resin film that uses synthetic resin as a base material. Preferably, a film made of polyethylene terephthalate (PET), polyethylene (PE) or the like having a thickness of about 10 μm to 50 μm is coated with a release agent such as silicon.

  As described above, the bonding film 20 includes the adhesive layer 40, the printing layer 50, the synthetic resin film 60, and the hard coat layer 70, and mainly protects the surface of the game board 110 and the surface of the game board 110. It has the function to modify.

  The adhesive layer 40 is a layer bonded to the game board 110 and is formed of an adhesive or an adhesive. Examples of the pressure-sensitive adhesive include polyurethane-based pressure-sensitive adhesives, acrylic pressure-sensitive adhesives, silicon-based pressure-sensitive adhesives, rubber-based pressure-sensitive adhesives, polyester-based pressure-sensitive adhesives, polyvinyl butyral-based pressure-sensitive adhesives, and ethylene-vinyl acetate-based pressure-sensitive adhesives. Preferably, an acrylic two-component mixed type is preferable, and more preferably an acrylic ester copolymer is included. From the viewpoint of the function of the pressure-sensitive adhesive, any of a solvent-type pressure-sensitive adhesive, a thermosetting pressure-sensitive adhesive, and an active energy ray-curable pressure-sensitive adhesive may be used.

  The print layer 50 is a layer that is laminated on the synthetic resin film 60 and represents the design of the game board. The print layer 50 is printed on the surface of the synthetic resin film 60 using colored ink. There is no restriction | limiting in particular in the pattern of the printing layer 50, A pattern, a pattern, an image, a pattern, a character, etc. or these combinations are contained. Printing of the printing layer 50 can be performed by arbitrarily selecting from normal offset printing using colored ink, UV offset printing, screen printing, gravure printing, and the like.

  The synthetic resin film 60 is made of a plastic material selected in consideration of moisture resistance and gas permeability. Examples of the plastic material include synthetic resins such as acrylic resin, polyethylene terephthalate, polycarbonate, methacrylic resin film, and polyvinyl chloride resin film. Preferably, since it has moderate moisture permeation resistance and gas permeability, in addition to being able to maintain an appropriate state in the printing layer 50 described later, it has strong tensile strength, moderate elongation, strong waist, elasticity It is preferable to use a polyethylene terephthalate (PET) film that is easy to handle in terms of processing because of its excellent recoverability. Although the thickness of the film is not limited, it is difficult to handle due to the rigidity of the game board film 100 at the time of joining to the game board 110, so that the film has a moderate waist and a thickness of about 10 μm to 200 μm. Should be used. By using polyethylene terephthalate, drying of the printing layer 50 can be promoted moderately, and compared with the case where the printing layer 50 is in direct contact with the adhesive layer 40, the printing discoloration of the printing layer 50 is reduced. Dullness can be effectively prevented.

  The hard coat layer 70 is a layer that is formed on the surface of the synthetic resin film 60 and constitutes the outermost layer when the game board 115 is completed. The hard coat layer 70 includes the lower printed layer 50 and the game board 110 together with the synthetic resin film 60. It has a function to protect from game balls. The hard coat layer 70 may be made of a resin mainly composed of a thermosetting resin or an active energy ray curable resin. Examples of the thermosetting resin include acrylic resins, polyester resins, and polyurethane resins that are polymerized or crosslinked by heat. The active energy ray-curable resin is a resin that is polymerized and cured by active energy rays such as ultraviolet rays and electron beams. As the active ultraviolet curable resin, those obtained by adding a photoinitiator to various oligomers and monomers of urethane-based, polyester-based, epoxy-based, and polyol-based (meth) acrylic acid-modified resins can be used. Among these, those having an acrylic group or a methacrylic group at the molecular end, such as urethane acrylate, polyester acrylate, epoxy acrylate, urethane methacrylate, polyester methacrylate, and epoxy methacrylate, can be suitably used. By providing the hard coat layer 70 on the surface of the synthetic resin film 60, the pencil hardness of the surface is improved by about two to four steps with respect to the pencil hardness of the synthetic resin film 60. The final surface pencil hardness is preferably H or more, and more preferably 3H or more.

  The game board 110 is manufactured by injection molding or extrusion molding using a synthetic resin such as acrylic, ABS resin, polycarbonate, or polystyrene. The game board 110 may be transparent, opaque, colorless, or colored. The game board 110 is formed in a rectangular plate shape having a thickness of 8 mm to 20 mm into which the obstacle nail can be implanted, and as shown in FIG. 1, the symbol variation device attaching opening 110a to which the symbol variation display device is attached. In addition, a small opening 110b smaller than the symbol changing device mounting opening 110a is formed for mounting various winning devices such as a movable winning port and a large winning port, an electronic display, a lamp and other decorative bodies. The opening part 110a and the small opening part 110b for attaching the symbol change device may be formed at the same time in the injection molding, or are manufactured in a separate process by cutting with an NC router processing machine after the injection molding or after the extrusion molding. May be. In addition, a frame-shaped reinforcing rib may be integrally formed on the outer peripheral edge portion or a thinned portion may be provided as necessary.

  As shown in FIG. 1, the game board film 100 having the above laminated structure is a part (bonding film) of the bonding film 20 corresponding to at least the symbol variation display device mounting opening 110 a formed on the game board 110. A cutting line 21 cut from the upper surface to the lower surface of the bonding film 20 is formed on the entire outer periphery of the opening piece 22). Moreover, the cutting film 21 is formed in the release film 10 in the same position. Therefore, when the bonding film 20 is bonded to the game board 110, only the peeling film outer peripheral portion 10b bonded to the bonding film outer peripheral portion 24 is peeled from the peeling film 10. However, since the bonding film opening piece 22, the bonding film outer peripheral portion 24, and the release film opening piece 10a are bonded to the game board 110 while being integrated with the protective film 30, the waist becomes weak or the game board film 100 is bent. It is possible to reduce the possibility that it will be difficult to paste due to drooling.

  Next, a manufacturing method of the game substrate film 100 will be described with reference to FIG. First, as shown in FIG. 2 (a), as a synthetic resin film 60, for example, a film made of polyethylene terephthalate having a thickness of 50 μm is prepared. For example, an ultraviolet curable resin is coated with a coating machine and then irradiated with ultraviolet rays. Then, the hard coat layer 70 is formed on the surface of the synthetic resin film 60.

  Next, as shown in FIG. 2B, the protective film 30 is bonded to the hard coat layer 70. At this time, the bonding strength is such a strength that the bonding film outer peripheral portion 24 is not peeled off from the game board 110 when the protective film 30 is peeled off while being bonded to the game board 110 by the adhesive layer 40. Moreover, even if the protective film 30 draws a curved surface by a roller or the like that passes when the game substrate film 100 is bonded to the game substrate 110, the bonding film 20 does not peel off from the protective film 30. The method for joining is not particularly limited. As shown in FIG.2 (c), the three-layer film produced in this way is cut one sheet at a time by a sheet cutter.

  As shown in FIG. 2 (d), a predetermined pattern is gravure-printed on the synthetic resin film 60 of each film produced by the above-described process using a multicolor printing machine to provide a printed layer 50. Gravure printing is performed by each printing unit of cyan (C), magenta (M), yellow (Y), and key tone (K). Each printing unit prints each color, then heat-drys it for several seconds, and sends it to a printing unit in a subsequent process. The printing layer 50 may be formed with silk UV ink as necessary.

  On the other hand, in another process, the adhesive layer 40 is formed on the release film 10. In order to form the adhesive layer 40, a release agent (not shown) containing silicon as a main component is applied to the release film 10 to a thickness of 0.5 μm to 1 μm, and then the adhesive is coated with a coating machine. The pressure-sensitive adhesive is dried by a dryer. In addition, you may prepare the adhesive film of a double-sided tape type.

  These films are integrated using a roll-to-sheet laminator by pressure bonding with a pressure roller to form a game board film 100 having no cutting line. The game board film is cured in this state for a period of about 2 days to 1 week.

  Thereafter, the game board film 100 is formed by pressing the release film 10 and the bonding film 20 from the upper surface to the lower surface along the outer periphery of the design change device mounting opening 110a of the game board 110 to be used. Disconnected by. Therefore, the bonding film opening piece 22 and the bonding film outer peripheral portion 24 are separated. At this time, the protective film 30 is not cut. At this time, the outer periphery of the game board film 100 is simultaneously cut to fit the outer periphery of the game board 110. Thus, the game board film 100 is completed.

  The game board film 100 manufactured as described above is bonded to the game board 110 as follows.

  In the first embodiment, the game board 110 and the game board film 100 are joined using a sheet-to-sheet laminating machine 120 as shown in FIG. First, the game board film 100 cut into a single wafer type is peeled off from the region of the bonding film outer peripheral portion 24 (not shown), while the guide member 122 and the guide roller 123 from the delivery conveyor 121. Guided and moved to the bonding area with the game board 110. The release film of the bonding film opening piece 22 remains bonded. In this state, that is, in the position of α in FIG. 3, the game board film 100 is in the state of FIG. 4A. The bonding film opening piece 22 is sent to the bonding area with the game board 110 as it is integrated with the bonding film outer peripheral portion 24 without being detached from the protective film 30. Therefore, the game substrate film 100 maintains an appropriate rigidity without becoming weak. On the other hand, the game board 110 flows on the conveyor according to the flow of the game board film 100, and the game board film 100 from which the release film 10 is peeled and the adhesive layer 40 is exposed is located at a predetermined position of the game board 110. The game board film 100 from which the release film 10 has been peeled is pressed against the game board 110 by being pressed at a pressure of about 300 kgf to 500 kgf by the pressure roller 126. In this way, the adhesive layer 40 of the bonding film outer peripheral portion 24 is firmly attached to the surface of the game board 110 by pressure bonding to the game board 110 as shown in FIG. 4B. As shown in FIG. 4C from this state, by removing the protective film 30, the bonding film opening piece 22 and the release film 10 are removed while being bonded. After that, it is cured for about 2 to 3 days, and the necessary small opening 110b such as a winning opening is drilled by a router or the like as shown in FIG. 1 to complete the game board 115.

  In this way, a game board 115 is formed to which a film in which the game board 110, the adhesive layer 40, the print layer 50, the synthetic resin film 60, and the hard coat layer 70 are laminated in this order is attached.

  According to the gaming substrate film 100 according to the first embodiment, when the release film 10 is peeled from the gaming substrate film 100, the bonding film opening piece 22 having a relatively large opening is removed, whereby the waist of the bonding film 20 is removed. Can be prevented from becoming weak. Therefore, it is possible to reduce the possibility that the game board film 100 is bent or twisted and difficult to be attached when the game board film 100 is joined.

  In addition, according to the game board film 100 according to the first embodiment, if the protective film 30 is removed after bonding to the game board 110, the bonding film opening piece 22 is removed while being bonded to the protective film 30. The Therefore, it is not necessary to perform an operation of opening a portion corresponding to the symbol variation display device mounting opening 110a.

  Further, according to the game board film 100 according to the first embodiment, the deterioration due to the contact of the game ball is reduced by providing the highly durable game board film 100 on the surface of the game board 110. Therefore, it is possible to hold the game board 110 with good visibility and good appearance for a long period of time.

(Second Embodiment)
A game board film 100 according to the second embodiment is shown in FIG. In the game substrate film 100 according to the second embodiment, as shown in FIG. 5, both the release film 10 and the bonding film 20 correspond to small openings 110 b other than the symbol variation display device attachment openings 110 a ( The peeling film small opening piece 10c and the bonding film small opening piece 23), that is, for example, is different from the first embodiment in that all or a part of the outer periphery of a portion corresponding to a winning opening or the like is cut. Since other points are the same as those of the first embodiment, description thereof is omitted.

  By adopting such a configuration, after the game board film 100 is joined to the game board 110, the protective film 30 is removed, so that in addition to the joint film opening piece 22, a portion corresponding to the small opening 110b is simultaneously provided. Removed to form an opening. Therefore, it is not necessary to reopen these openings with a router or the like.

(Third embodiment)
A game board film 100 according to the second embodiment is shown in FIG. As shown in FIG. 6, the game substrate film 100 according to the second embodiment is a portion corresponding to the small opening 110 b other than the symbol variation display device mounting opening 110 a over all layers, for example, a prize. It differs from the first embodiment in that all or a part of the outer circumference corresponding to the mouth or the like is formed in the opening hole 25 penetrated in advance. Since other points are the same as those of the first embodiment, description thereof is omitted.

  Even if the opening hole 25 penetrating the game board film 100 is formed in advance, the small opening portion 110b other than the symbol variation display device mounting opening portion 110a has a relatively small size, such as a winning opening. Since it is an opening, it is possible to prevent the play equipment board film 100 from becoming weak or bent when the game equipment board film 100 is joined to the game board 110, making it difficult to attach. On the other hand, since the opening hole 25 is previously formed as a through hole, it is not necessary to perform a drilling operation with a router or the like.

(Fourth embodiment)
FIG. 7 shows a game board film 100 according to the fourth embodiment. As shown in FIG. 7A, the game board film 100 according to the fourth embodiment is different from the first embodiment in that the release film 10 and the adhesive layer 40 are not cut. In order to create the game substrate film 100 according to the fourth embodiment, in the production method of the first embodiment, the cutting process is first performed at the stage of FIG. 2D before the films produced in the two processes are laminated. Can be added. When such a configuration is adopted, as shown in FIG. 8A, when the release film 10 is peeled off, all the release films 10 are bonded to the game board 110 in a state where they are released. By peeling off the protective film 30 from the bonded state, the adhesive layer 40 is very thin and weak against shearing force. Therefore, as shown in FIG. 8B, the adhesive layer 40 is cut along with the bonding film opening piece 22. Removed. Although FIG. 8 shows the thickness of the adhesive layer 40 in consideration of visibility, the thickness is actually such that the cut surface is hardly visible.

  In addition, this invention is not limited to each embodiment mentioned above, and it cannot be overemphasized that it can implement with a various aspect, as long as it belongs to the technical scope of this invention.

  Furthermore, in the embodiment described above, the game substrate film 100 is formed by laminating the hard coat layer 70, but the hard coat layer 70 may not be provided.

  Moreover, according to the game substrate film 100 according to the above-described embodiment, the adhesive layer 40 is provided in the lower layer of the print layer 50, but the synthetic resin film 60 is between the print layer 50 and the adhesive layer 40. Another synthetic resin film may be inserted. By adopting such a configuration, since the resin film is sandwiched between the printing layer 50 and the adhesive layer 40, the moisture of the printing layer 50 is prevented from reaching the adhesive layer 40. Therefore, it is possible to prevent the strength of the adhesive layer 40 from being affected by the dry state of the printing layer 50 and the like. Therefore, it is possible to reduce the variation in bonding strength from lot to lot. The printing layer 50 may be provided between the synthetic resin film and the hard coat layer.

  Further, according to the game board film 100 according to the above-described embodiment, the adhesive layer 40 is formed on the entire release film, but the bonding film opening piece 22 of the release film 10 is not a part bonded to the game board 110. Therefore, the adhesive layer 40 may be provided only in the vicinity of the outer periphery of the bonding film opening piece 22 as shown in FIG. 9A, or the adhesive layer 40 may not be provided in the region of the bonding film opening piece 22 as shown in FIG. 9B.

  Furthermore, in the above-described embodiment, when the films produced in the separate steps are joined, they are joined by a single-wafer type laminating machine, but each film is not cut into single-wafer type rolls to sheets. Bonding may be performed using a type laminating machine.

  Further, in the above-described embodiment, when the game board film 100 is bonded to the game board 110, the roll-to-sheet type laminating machine 120 is used. Also good.

  As shown in the above-described embodiment, the present invention can be used for a gaming machine that uses a game ball as a game medium.

10 ... release film, 10a ... release film opening piece, 10b ... release film outer periphery,
10c ... peeling film small opening piece, 20 ... bonding film, 21 ... cutting line,
22 ... Bonding film opening piece, 23 ... Bonding film small opening piece,
24 ... Bonding film outer periphery, 25 ... Opening hole, 30 ... Protective film, 40 ... Adhesive layer,
50 ... Print layer, 60 ... Synthetic resin film, 70 ... Hard coat layer,
DESCRIPTION OF SYMBOLS 100 ... Game board film, 110 ... Game board, 110b ... Small opening part,
115 ... Game board, 120 ... Laminating machine, 121 ... Conveyor for delivery,
122 ... Guide member, 123 ... Guide roller, 126 ... Pressure roller

Claims (7)

A bonding film comprising a synthetic resin film and an adhesive layer laminated to the synthetic resin film for bonding to a game board;
The synthetic resin film is provided with a protective film bonded to the surface opposite to the adhesive layer,
At least the synthetic resin film of the bonding film is cut from the upper surface to the lower surface of the outer periphery of the portion corresponding to the symbol variation display device mounting opening formed on the game board when bonded to the game board.
A film for a game board, wherein when the protective film is peeled off, a portion corresponding to the symbol variation display device mounting opening of the bonding film is removed together with the protective film.   2. The game board film according to claim 1, wherein an outer periphery of a portion of the bonding film corresponding to a small opening other than the symbol variation display device mounting opening is cut from an upper surface to a lower surface.   2. The game board film according to claim 1, wherein the bonding film and the protective film have openings corresponding to small openings other than the symbol variation display device mounting opening.   The game board film according to claim 1, wherein the bonding film includes a printed layer.   5. A game board, wherein the game board film according to claim 1 is bonded to a game board. The method for producing a film for a game board according to any one of claims 1 to 4, comprising the following steps.
(1) The step of laminating the protective film on the synthetic resin film (2) The step of cutting only the bonding film by pressing or laser processing the outer periphery of the portion corresponding to the opening for mounting the symbol variation display device 5. A method for bonding a game board film according to claim 1 to a game board, comprising the following steps.
(1) The step of bonding the game board film to the game board (2) For attaching the symbol variation display device formed on at least the game board of the bonding film by peeling the protective film from the bonding film Removing the portion corresponding to the opening

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