JP6200633B2 - Protective film for game board, game board with protective film joined with protective film for game board, and method for producing protective film for game board - Google Patents

Description

  The present invention relates to a protection film for a game board used in a game 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 protection to which a protection film for a game board is joined. The present invention relates to a game board with a film and a method for producing a protection film for a game board.

  Conventionally, a game board of a pachinko machine has two guide rails for guiding a game ball to the game area, and a game area such as a symbol variation display device or a winning device is surrounded by the guide rail. Arranged. In addition, obstacle nails, windmills, and the like are planted around these game parts, thereby changing the fall path of the game ball falling in the game area, thereby improving the amusement.

  In recent years, a game board made of 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 surface.

  However, the game board made of synthetic resin is easily scratched by contact with the game ball, and the transparent game board makes it difficult to see the symbol display device and the decorative member provided on the back as the game period becomes longer. There was a problem. Further, it has been pointed out that when a picture is applied to the surface of the game board, the picture is peeled off and the appearance of the entire game board is deteriorated.

  In order to improve such problems, there has been proposed a game board in which a hard coat layer is transferred to the surface of the game board by a roll type transfer device (Patent Document 1). The transfer film has a release layer, hard coat layer, picture layer, and adhesive layer in order from the base film layer. After transfer, the base film is wound up, and finally the hard coat layer and picture layer are transferred to the surface of the game board. To be joined.

  However, although this invention certainly has a hard coat layer on the top surface of the picture layer, the game period can be extended for a long time when the hard coat layer and the picture layer are just transferred to the surface of the game board. In particular, there is a risk that the hard coat layer will be scratched at locations where game balls pass frequently, and eventually the lower picture layer may be peeled off. In addition, if the adhesive layer is formed in a state where the pattern layer is not sufficiently dried, the adhesive strength of the adhesive layer is lowered, and as a result, there is a possibility that it may be easily peeled off from the game board. It was.

JP 2011-101791 A

  Therefore, the present invention has been made in view of the above problems, and a gaming board that can provide a gaming board that has higher durability, better visibility, and better appearance over a long period of time. The main object is to provide a protective film for a game, and a method for producing the protective film for a game board and a game board with a protective film using the protective film for a game board.

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

A protective film for a game board according to the present invention includes a first adhesive layer made of an adhesive that adheres to the game board, a first resin film laminated on an upper surface of the first adhesive layer, and an upper surface of the first resin film. A printed layer and a second adhesive layer, a second resin film laminated on an upper surface of the printed layer and the second adhesive layer, a hard coat layer laminated on an upper surface of the second resin film,
It is characterized by having.

  In the present invention, a first adhesive layer made of an adhesive for adhering to a game board is directly laminated on a first resin film, and a printed layer or a second adhesive layer having moisture or moisture is interposed through the first resin film. Are arranged separately. Therefore, by selecting the material of the first resin film, it is possible to arbitrarily change the ratio at which moisture or moisture of the printed layer or the second adhesive layer is transmitted to the first adhesive layer. Therefore, the first adhesive layer can be maintained in a more preferable state. Specifically, for example, when the first adhesive layer is laminated directly on the print layer as in the conventional case, there is a possibility that the adhesive strength of the first adhesive layer is affected by the moisture of the print layer. However, the influence of moisture on the adhesive strength can be reduced by using the first resin film. In addition, since the hard coat layer is formed on the outermost surface, the pencil hardness on the surface can be improved by 2 to 4 steps. Therefore, the durability of the surface can be further improved, and the possibility that the printed layer or the surface is shaved and difficult to see can be further reduced.

  Moreover, in the protective film for a game board according to the present invention, the first laminated resin film having the first adhesive layer laminated on the first resin film and the first resin film, the second resin film, and the first A second laminated resin film having the hard coat layer laminated on two resin films, and after forming the printing layer on either the first resin film or the second resin film, the second adhesion The first laminated resin film and the second laminated resin film may be arranged so that the first resin film and the second resin film face each other through layers. In the present invention, since both the first laminated resin film and the second laminated resin film have the resin film, the printed layer is sandwiched between the resin films. Therefore, since the pattern layer represented by the printed layer is protected by the resin films disposed on both sides of the front surface and the back surface, it is possible to reduce the possibility of the pattern being shaved by the game ball and becoming difficult to see. In addition, since the hard coat layer is formed on the outermost surface, the pencil hardness on the surface can be improved by 2 to 4 steps. Therefore, the durability of the surface can be further improved, and the possibility that the printed layer or the surface is shaved and difficult to see can be further reduced. On the other hand, the first adhesive layer is provided directly via the first resin film without being provided directly on the print layer, and thus the first adhesive layer is stably not affected by the degree of drying of the print layer. High adhesive strength can be maintained. Moreover, since the structure which joins after producing the 1st laminated resin film and the 2nd laminated resin film beforehand is employ | adopted, the 1st laminated resin film and the 2nd laminated resin film are finally produced. In this case, the final product can be manufactured only by the joining process. Therefore, it is possible to provide a protective film for a game board that can easily cope with urgent production or the like.

  Moreover, the protective film for game boards of this invention WHEREIN: The said 1st resin film and the said 2nd resin film may be produced with resin which has polycarbonate resin or polyethylene terephthalate resin as a main component. By adopting such a configuration, a hard coat layer that can effectively improve the surface hardness can be obtained. Such a material is excellent in rigidity, and a film having appropriate rigidity can be produced when it is joined to a game board. Further, when considering the influence on the drying of the printing layer and the influence of moisture or moisture on the first adhesive layer, the moisture permeability resistance and gas permeable physical properties are excellent, and the influence of moisture on the printing layer is the first. While the influence on the adhesive layer can be reduced, since the gas is permeated appropriately, the printed layer can be kept in an appropriate dry state even after the completion of the protective film for a game board. That is, although the influence of humidity on the first adhesive layer can be suppressed as much as possible, a gas suitable for drying the printed layer can be transmitted.

  The game board with a protective film of the present invention is obtained by bonding the above-described protective film for a game board to the surface. Thereby, the game board which has the effect mentioned above can be provided.

Furthermore, the method for producing the protective film for game boards of the present invention,
(1) A step of laminating the first adhesive layer and the first resin film to produce a first laminated resin film (2) A step of producing a second laminated resin film by applying a hard coat layer to the second resin film (3) A step of forming a printing layer on either the first laminated resin film or the second laminated resin film. (4) The first laminated resin film so that the first resin film and the second resin film face each other. And a step of adhering the second laminated resin film. By adopting such a method, it is possible to produce a protective film for a game board having the above effects. Moreover, since the structure which joins after producing the 1st laminated resin film and the 2nd laminated resin film beforehand is employable, the 1st laminated resin film and the 2nd laminated resin film can be stocked, A final product can be produced simply by joining the stocked first and second laminated resin films. Therefore, it is possible to provide a protective film for a game board that can easily cope with urgent production or the like.

  According to the protective film for a game board according to the present invention, the deterioration of the surface of the game board due to the contact of the game ball is reduced by joining the protective film for the game board to the surface of the game board. Therefore, it is possible to provide a game board that can hold a game board that has good visibility and good appearance over a long period of time.

Drawing 1 is a sectional view of protective film 100 for game boards concerning an embodiment. FIG. 2 is a front view of the game board 110 according to the embodiment. FIG. 3 is an exploded cross-sectional view of the game board protective film 100 according to the embodiment. FIG. 4 is a schematic diagram illustrating a process of joining the game board protective film 100 to the game board 110 according to the embodiment. FIG. 5 is a cross-sectional view showing the game board 110 to which the game board protective film 100 according to the embodiment is joined.

  A mode for carrying out the present invention will be described in detail based on the above-described briefly described drawings. FIG. 1 is a side view showing the state of the layers of the protective film for game boards according to the first embodiment. 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. In the present specification and claims, each “film” is a concept including a sheet, and is not particularly distinguished by thickness, and does not exclude a relatively thick plastic sheet. In addition, “adhesive” is a concept including both an adhesive and a pressure-sensitive adhesive unless otherwise specifically used. “Adhesive layer” refers to both a layer composed of an adhesive and a layer composed of a pressure-sensitive adhesive. It is a concept that also includes

  As shown in FIG. 1, the protective film 100 for game boards according to the present embodiment mainly includes a first laminated resin film 10, a second adhesive layer 30, a printing layer 20, and a second laminated resin film 40 from the lower layer. Yes.

  The first laminated resin film 10 has a three-layer structure in which the first adhesive layer 60 is laminated on the first resin film 50 and then the release film 70 is laminated.

  The first resin film 50 is made of a plastic material selected in consideration of moisture permeability 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 resistance and gas permeability, in addition to being able to maintain an appropriate state in the first adhesive layer 60 and the printing layer 20, it has a high tensile strength, an appropriate elongation, It is preferable to use a polyethylene terephthalate (PET) film that is strong and easy to handle in terms of processing due to its excellent elastic recovery properties. Although the thickness of the film is not limited, it becomes difficult to handle due to the rigidity of the protective film 100 for the game board during the joining process to the game board 110, so the thickness is about 10 μm to 200 μm with an appropriate waist. It is better to use one. By using polyethylene terephthalate, drying of the printing layer can be promoted moderately, and compared with the case where the printing layer is in direct contact with the first adhesive layer, discoloration and dullness of printing of the printing layer are reduced. It can be effectively prevented.

  The first adhesive layer 60 is a layer that is joined to the game board 110 and is formed of an adhesive or a pressure-sensitive adhesive. Preferably, an adhesive that is bonded to the game board 110 by adhesion is used. Examples of the pressure sensitive adhesive include polyurethane pressure sensitive adhesive, acrylic pressure sensitive adhesive, silicon pressure sensitive adhesive, rubber pressure sensitive adhesive, polyester pressure sensitive adhesive, polyvinyl butyral pressure sensitive adhesive, and ethylene-vinyl acetate pressure sensitive adhesive. 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 release film 70 is for protecting the first adhesive layer 60, and may be naturally deteriorated before being joined to the game board 110, or may be defective due to dust or the like being stuck during transportation or storage. To prevent. The release film 70 is peeled off before being joined to the game board 110. The material, thickness, and the like of the release film 70 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. Note that the release film 70 is not necessarily provided when the game board protective film 100 is stored in a roll form and the first adhesive layer 60 is not exposed to the outside.

  The printed layer 20 is a layer that is arranged between the first laminated resin film 10 and a second laminated resin film 40 described later and represents a picture of the game board 110. The printed layer 20 is printed on the surface of either the first resin film 50 or the second resin film 80 using colored ink. There is no restriction | limiting in particular in the pattern of the printing layer 20, A pattern, a pattern, an image, a pattern, a character, etc. or these combinations are contained. Printing of the printing layer 20 can be performed by arbitrarily selecting from normal offset printing using colored ink, UV offset printing, screen printing, gravure printing, and the like.

  The second adhesive layer 30 has a function of joining the first laminated resin film 10 and the second laminated resin film 40. The second adhesive layer 30 is disposed between the first resin film 50 and the second resin film 80 after the printing layer 20 is formed on either the first laminated resin film 10 or the second laminated resin film 40. The first laminated resin film 10 and the second laminated resin film 40 are joined. At this time, the second adhesive layer 30 may be applied to the dried printed layer 20, or the film opposite to the film (the first laminated resin film 10 or the second laminated resin film 40) on which the printed layer 20 is formed. You may apply to. The adhesive used is not particularly limited, and an optimum one can be used as appropriate.

  In the second laminated resin film 40, a hard coat layer 90 is formed on the second resin film 80, and a protective film 95 for arbitrarily protecting the hard coat layer is laminated on the surface of the hard coat layer 90. Note that the second resin film 80 is the same as the first resin film 50, and thus the description thereof is omitted.

  The hard coat layer 90 is a layer that constitutes the surface of the outermost layer when bonded to the game board 110, and functions to protect the lower printed layer 20 and the game board 110 from the game ball together with the second resin film 80. Have The hard coat layer 90 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 90 on the surface of the second resin film 80, the pencil hardness of the surface is improved by about two to four steps with respect to the pencil hardness of the second resin film 80. The final surface pencil hardness is preferably H or more, and more preferably 3H or more.

  The protective film 95 is a film disposed on the surface to prevent the hard coat layer 90 from being damaged before shipping the game board 110 as the final product, and can be omitted.

  The game board 110 is produced 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 to 20 mm into which obstacle nails can be implanted. As shown in FIG. A large and small opening 110a for attaching various winning devices, electronic displays, lamps and other decorative bodies is formed. The opening 110a may be formed at the same time in the injection molding, or may be formed in a separate process by cutting with an NC router processing machine after the injection molding or after the extrusion molding. 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.

  Next, a method for producing and using the above-described protective film 100 for game board will be described. The protective film 100 for game boards of the present invention mainly includes a step of producing the first laminated resin film 10 (first laminated film producing step) and a step of producing the second laminated resin film 40 (second laminated film producing step). And after forming a printing layer (printing layer formation process), the process (joining process) of joining these is included. Hereinafter, each process will be described in detail. In the following steps:

(First laminated film production process)
For the first laminated resin film 10, first, a film made of polyethylene terephthalate having a thickness of 50 μm is prepared as the release film 70, and a release agent (not shown) containing silicon as a main component is added to the release film 70 by 0.5 μm. Then, the first adhesive layer 60 is formed by coating the pressure-sensitive adhesive of thermosetting pressure-sensitive adhesive with a coating machine and drying the pressure-sensitive adhesive with a dryer. Thereafter, a film made of polyethylene terephthalate having a thickness of 50 μm is laminated as the first resin film 50, and the first resin film 50 is pressure-bonded to the first adhesive layer 60 with a pressure roller (not shown). In this state, the pressure-sensitive adhesive is cured for a period of about 2 days to 1 week until the crosslinking reaction sufficiently proceeds.

(Second laminated film production process)
The second laminated resin film 40 is produced in parallel with the first laminated resin film 10 in a separate process. The second laminated resin film 40 is formed by coating the second resin film 80 with an ultraviolet curable resin with a coating machine, and then irradiating with ultraviolet rays to cure the second resin film 80, thereby forming the hard coat layer 90 on the surface of the second resin film 80. Form.

(Print layer forming process)
A predetermined pattern is gravure-printed on the surface of the second resin film 80 of the second laminated resin film 40 or the first resin film 50 of the first laminated resin film 10 using a multicolor printing machine. 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 the subsequent printing unit.

(Joining process)
When the printing layer 20 is formed on the surface of the second resin film 80 of the second laminated resin film 40 in the printing layer forming step, an adhesive is applied to the surface of the first resin film 50 by a coating machine, and the second The adhesive layer 30 is formed. When the printing layer 20 is formed on the surface of the first resin film 50 of the first laminated resin film 10 in the printing layer forming step, an adhesive is applied to the surface of the second resin film 80 by a coating machine, and the second adhesion is performed. Layer 30 is formed. And the 1st laminated resin film 10 and the 2nd laminated resin film 40 are joined using a roll-to-roll type laminating machine, and the protective film 100 for game boards shown in FIG. 1 is completed.

  Thereafter, an opening corresponding to the opening 110a of the game board 110 to be used is formed. The opening may be formed with a press by a predetermined die or may be formed by laser processing.

  The game board protective film 100 manufactured as described above is joined to the game board 110. Hereinafter, the process of joining with the game board 110 by sticking is demonstrated.

  The joining process of the game board 110 and the game board protective film 100 in the present embodiment is produced using a roll-to-sheet type laminating machine 120 as shown in FIG. First, the protective film 100 for game boards is attached to the sending roller 121 in the state of being rolled into a large number of rolls. After the game board protective film 100 is delivered from the delivery roller 121, the game board protection film 100 is guided by the guide roller 122 to the film peeling portion 123 disposed in the vicinity of the lamination position with the game board 110. The film peeling portion 123 has a tip formed on a roll 123a, and the peeling film 70 moves along the roll 123a in a different direction from the other parts. Is peeled off. The peeled release film 70 is taken up and collected by the take-up roller 124. On the other hand, the game board 110 flows on the conveyor in accordance with the flow of the game board protection film 100, and the game board protection film 100 from which the release film 70 is peeled and the first adhesive layer 60 is exposed is the game. The printing layer 20 is disposed at a predetermined position on the plate 110 by a positioning roller 125 that moves downward from the broken line position in FIG. 4 to the solid line position in FIG. 4. Then, the protective film 100 for game boards from which the peeling film 70 was peeled off is pressure-bonded to the game board 110 by pressing with a pressure roller 126 at a pressure of about 300 kgf to 500 kgf. Thus, the first adhesive layer 60 is firmly attached to the game board 110 by pressure. Thereafter, the game plate 110b with a protective film is completed after curing for a few days.

  Thus, as shown in FIG. 5, the game board 110b with a protective film has a first adhesive layer 60, a first resin film 50, a second adhesive layer 30, a print layer 20, a first layer, from the lower layer to the surface of the game board 110. 2 A film in which the resin film 80, the hard coat layer 90, and the protective film 95 are laminated in this order is attached. The protective film 95 is peeled off before use.

  According to the game board 110 according to the embodiment, by providing the highly durable game board protective film 100 on the surface of the game board 110, deterioration due to contact of the game ball is reduced. Therefore, the game board 110 with good visibility and good appearance can be held for a long period of time.

  In addition, according to the game board 110 according to the present embodiment, the hard coat layer 90 is bonded to the second resin film 80, so that the surface hardness of the second resin film 80 is two levels with respect to the pencil hardness. 4 stages can be improved. Therefore, in addition to reducing the deterioration due to the contact of the game ball, since the two layers of the second resin film 80 and the hard coat layer 90 are formed on the surface layer from the printed layer, the game board has good visibility and good appearance 110 can be held for a longer period of time.

  Moreover, according to the game board 110 concerning this embodiment, since the 1st contact bonding layer 60 is previously laminated | stacked on the 1st resin film 50 which is a resin film different from the film which comprises the 2nd lamination resin film 40. The crosslinking reaction of the pressure-sensitive adhesive can be promoted in a separate step. Therefore, the adhesion with the first resin film 50 can be improved. Moreover, since the 1st laminated resin film 10 can be produced previously compared with the process of producing the whole protective film 100 for game boards simultaneously like the past, the 1st contact bonding layer 60 has sufficient curing period. Can be secured. Furthermore, compared with the case where each layer is laminated in order, the present invention is prepared in advance except for the final step, and just before the first laminated resin film 10 and the second laminated resin film 40 are bonded together. can do. Therefore, the production time of the protective film 100 for the game board in the final process can be shortened, and it is excellent in versatility and can easily cope with an increased production system.

  Moreover, since the printing layer 20 is printed on the 1st resin film 50 or the 2nd resin film 80, and the resin film is pinched | interposed between the 1st contact bonding layers 60, the moisture of the printing layer 20 is on the 1st contact bonding layers 60. It is prevented from reaching. Therefore, it is possible to prevent the strength of the first adhesive layer 60 from being affected by deterioration due to the dry state of the printing layer 20. Therefore, it is possible to reduce the variation in bonding strength from lot to lot.

  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.

  In the above-described embodiment, the protective film 100 for the game board is completed by joining the first laminated resin film 10 and the second laminated resin film 40, but the first adhesive layer and the first resin. As long as the film, the printing layer, the second adhesive layer, the second resin film, and the hard coat layer are laminated in this order, the manufacturing method is not limited.

  In the embodiment described above, when the first laminated resin film 10 and the second laminated resin film 40 are joined, they are joined using a roll-to-roll type laminating machine, but the joining method is particularly limited. However, it may be joined by a single-wafer laminating machine.

  Further, in the above-described embodiment, when the game board protective film 100 is joined to the game board 110, the roll-to-sheet laminating machine 120 is used. May be.

  Furthermore, in the above-described embodiment, the second adhesive layer 30 is formed on the resin film on the side where the printed layer 20 is not formed. However, the second adhesive layer 30 may be formed on the surface layer of the printed layer 20. .

  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 ... first laminated resin film, 20 ... printed layer, 30 ... second adhesive layer,
40 ... second laminated resin film, 50 ... first resin film, 60 ... first adhesive layer,
70 ... release film, 80 ... second resin film, 90 ... hard coat layer,
95 ... Protective film, 100 ... Protective film for game board, 110 ... Game board,
110a ... opening, 110b ... game board with protective film, 120 ... laminating machine,
121 ... Sending roller, 122 ... Guide roller, 123 ... Film peeling part,
123a ... roll, 124 ... winding roller, 125 ... positioning roller,
126 ... Pressure roller

Claims (5)

A first adhesive layer made of an adhesive that adheres to the game board;
A first resin film laminated on the upper surface of the first adhesive layer;
A printed layer and a second adhesive layer provided on the upper surface of the first resin film;
A second resin film laminated on top of the printed layer and the second adhesive layer;
A hard coat layer laminated on the upper surface of the second resin film;
A protective film for a game board, comprising: A first laminated resin film having the first adhesive layer laminated on the first resin film and the first resin film; and a hard coat layer laminated on the second resin film and the second resin film. A second laminated resin film;
The printed layer formed on either the first resin film or the second resin film;
With
The first laminated resin film and the second laminated resin film are arranged so that the first resin film and the second resin film face each other with the second adhesive layer interposed therebetween. Item 2. A protective film for game board according to Item 1.   The protective film for game boards according to claim 1 or 2, wherein the first resin film and the second resin film are made of a resin mainly composed of a polycarbonate resin or a polyethylene terephthalate resin.   A game board with a protective film, wherein the game board protective film according to any one of claims 1 to 3 is joined. The method for producing a protective film for a game board according to any one of claims 2 to 4, comprising the following steps.
(1) A step of laminating the first adhesive layer and the first resin film to produce a first laminated resin film (2) A step of producing a second laminated resin film by applying a hard coat layer to the second resin film (3) A step of forming a printing layer on either the first laminated resin film or the second laminated resin film. (4) The first laminated resin film so that the first resin film and the second resin film face each other. And a step of bonding the second laminated resin film

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