JP5735839B2 - Mold, game board molding method using mold, and game board molded by this molding method - Google Patents

Description

  The present invention relates to a mold for forming a game board for a game machine using a game ball such as a pachinko game machine, an arrange ball game machine, or a sparrow ball game machine as a game medium, and a game board using the mold. The present invention relates to a method and a game board formed by the forming method.

  In recent years, game boards made of synthetic resin have been proposed as materials for game boards used in pachinko machines in consideration of environmental protection and the occurrence of product defects due to deformation of plywood. In particular, a gaming machine has been proposed that uses a synthetic resin having transparency to enhance the interest by using a game board in which a symbol variation display device and various decorative members are arranged on the back surface.

  One method of molding such a synthetic resin game board is by injection molding. Although it is necessary to provide a large number of attachment holes for attaching a winning device or the like on the front surface of the game board, according to the injection molding method, since these attachment holes can be formed simultaneously, the yield is excellent. At the same time, it eliminates the need for post-processing and is excellent in mass productivity.

  However, the pachinko gaming machine has a different board surface configuration for each model, and accordingly, the shape of the mounting hole of the game board varies for each model. Therefore, a mold for injection molding must be molded for each model, and there is a problem that the cost increases.

  In order to solve such a problem, the invention described in Patent Document 1 is a mold for molding a game board provided with a display window for which a screen of the symbol variation display device is desired, and for molding the display window. Proposal of a mold that allows each piece to be exchanged for each model.

Japanese Patent No. 2008-545

  However, in the invention described in Patent Document 1, as shown in FIG. 3 of Patent Document 1, only the opening for making the screen of the display device desired is replaceable for each model, and other openings Has a poor production efficiency because it needs to be formed by machining, which is a separate process.

  Further, as shown in FIG. 1, the pieces for forming the display window are fitted into the piece fitting portions formed in the main body portion. Therefore, when the display window is positioned inside the outer peripheral line of the piece insertion portion, the line of the piece insertion portion appears around the display window of the game board obtained by injection molding. This deteriorates the appearance of the appearance, and there is a concern that the game balls may be dropped due to the unevenness generated on the line.

  Accordingly, the present invention has been made in view of the above problems, and a game board capable of forming different types of game boards and reducing the cost required for the mold without impairing the appearance of the game boards. The main purpose is to provide molds.

  The present invention adopts the following means in order to achieve the above-mentioned object.

A mold for molding a game board for a gaming machine according to the present invention,
In a mold for forming a game board for a gaming machine for forming a winning device, a design variation display device or a mounting hole for attaching various decorative members, etc., with a replaceable insert,
The outer periphery of the nesting is characterized in that the outer periphery of the nesting is arranged at a position outside the imaginary line that is formed on the inner side by the length of the radius of the game ball from the outer periphery of the game area.

  According to such a mold for forming a game board for a gaming machine, the portion for forming the attachment hole for attaching the winning device, the symbol variation display device, various decorative members, etc. is made a replaceable nesting. By exchanging the inserts corresponding to different attachment hole shapes depending on the model of the machine, it is possible to produce game boards having different attachment hole shapes by using one movable type and a fixed type. For this reason, compared with the case where a metal mold | die is produced for every different model, the production cost of a metal mold | die can be held down, As a result, the price of a game board can be held down low. In addition, since the outer periphery of the nesting is arranged on the mold so as to be outside the imaginary line formed by the length of the radius of the game ball from the outer periphery of the game area, the outer periphery of the nesting is An uneven line (hereinafter referred to as “nested line”) generated at the boundary is formed near the outer periphery of the game area. Therefore, it is possible to prevent the appearance of the appearance from being impaired as compared with a case where a nested line is generated in the vicinity of the symbol variation display device that is stared during the game. Further, since the nesting line is formed outside the virtual line formed on the inner side by the length of the radius of the game ball from the outer periphery of the game area, the game ball is prevented from coming into contact with the unevenness of the nesting line. Therefore, it is possible to prevent the game ball from being affected by unevenness in the game area. Here, the “game area” refers to an area in which a winning device or the like is provided and the game ball can move after passing through the return device (see reference numeral 51 in FIG. 5).

  In the mold for forming a gaming board for a gaming machine according to the present invention, the outer periphery of the insert may be arranged at a position of the outer periphery of the gaming area. By adopting such a configuration, the nesting line of the molded game board is generated under the guide rail, so that the nesting line can be prevented from being hidden by the guide rail and impairing the appearance of the appearance. Further, since no nesting line is generated in the game area, it is possible to prevent the unevenness of the nesting line from affecting the fall of the game ball.

  Further, in the mold for forming a game board for a gaming machine of the present invention, the outer periphery of the nesting is outside a virtual line formed on the inner side by the length of the radius of the game ball from the outer periphery of the game area, And it may be arranged at a position in the game area. Even if the gaming machines are of different types, the position of the guide rail is common if the main body of the gaming machines is common. Therefore, by exchanging the nesting of one mold, it is possible to produce a game board having different shaped openings. As a result, the number of molds to be manufactured can be reduced, and as a result, the price of the game board can be reduced. Moreover, since it is possible to prevent the nesting line from occurring in the projecting ball passage region, it is possible to prevent the appearance of the projecting ball passage region which is always passed through and easily attracts attention from being impaired. . Here, the “launched ball passage area” is an area for guiding the launched game ball to the game area, and refers to an area from when the game ball is launched to the return ball prevention device (reference numeral in FIG. 5). 55).

  Furthermore, in the mold for forming a game board for a gaming machine of the present invention, the outer periphery of the insert may be partially or entirely arranged at a position other than the game area and the shot ball passing area. If such a configuration is adopted, the nesting lines that exist outside the game area and other than the shot ball passing area are generated outside the game area and the shot ball passing area. Therefore, since the nesting line cannot be viewed from the outside of the gaming machine in a state where the gaming board is attached to the gaming machine, it is possible to almost completely prevent the appearance from deteriorating. In addition, since it is possible to prevent the nesting line from occurring in both the shot ball passage area and the game area, it is possible to prevent the possibility that the nesting line affects the trajectory of the game ball.

  As a method for forming a game board using the mold of the present invention, a step of attaching a nest corresponding to the shape of the mounting hole to be formed to the above-described mold, and a mold inside the mold And a step of filling and solidifying the synthetic resin. By adopting such a game board molding method, it is possible to mold different types of game boards having different attachment holes by exchanging the nested molds using the same fixed mold and movable mold. Therefore, the mold cost can be reduced as compared with the case of producing a plurality of molds, and as a result, the product cost of the gaming machine can be reduced.

  Furthermore, the game board of the present invention is characterized by being molded using the above-described mold. According to the game board molded using the above-mentioned mold, it is possible to prevent the occurrence of a nesting line at the center of the game area where the player stares, thus preventing the appearance of the game board from being impaired. can do. Further, in the game area, it is possible to prevent the possibility of giving a subtle change to the trajectory of the game ball due to the unevenness of the nesting line, so that it becomes a game board capable of performing a safe game.

  Furthermore, as a game board of the present invention, in the game board molded by the above-described game board molding method using a mold, a step of attaching a nest corresponding to the shape of the mounting hole to be formed to the mold, A game board molded by a game board molding method using a mold including a step of filling and solidifying a synthetic resin in a mold to which the insert is attached may be used. By adopting such a configuration, it is possible to produce a game board that commonly uses a non-game area that is not affected by a change in model, without creating a new mold for each model. Therefore, it is possible to provide a game board with a reduced price compared to a game board created by a production method in which all molds are exchanged.

  According to the mold according to the present invention, it is possible to produce a game board that can reduce the appearance of the game ball without affecting its appearance. Further, according to the method for forming a game board using a mold, if only the game area is replaced as a nesting, game boards having different attachment holes of different models can be produced with the same mold. Therefore, the product cost can be reduced. In addition, the game board formed by the present mold does not cause a nesting line in the game area where the player stares, so that the appearance of the game board can be prevented from being impaired. In addition, since there is no fear of a subtle trajectory change of the game ball caused by nesting, it is possible to perform a stable game.

FIG. 1 is a perspective view showing an outline of the configuration of the pachinko gaming machine 20. FIG. 2 is a front view of the pachinko gaming machine 20. FIG. 3 is a rear view of the pachinko gaming machine 20. FIG. 4 is an explanatory diagram for explaining the range of the guide rail 53 of the game board 50. FIG. 5 is an explanatory diagram for explaining each region of the game board 50. FIG. 6 is a perspective view showing the injection mold 100, the insert mold 13, and the game board 50 according to the first embodiment. FIG. 7 is a front view showing the size and arrangement of the nesting mold 13 with respect to the game board according to the first embodiment, and is an AA sectional view and a partially enlarged view of the AA sectional view of the front view. FIG. 8 is a cross-sectional view showing a state in which the injection mold 100 according to the first embodiment is closed. FIG. 9 is a perspective view showing another embodiment of the nested mold 13 according to the first embodiment. FIG. 10 is a front view showing the size and arrangement of the nesting mold 13 with respect to the game board according to the second embodiment. FIG. 11 is a front view showing the size and arrangement of the nesting mold 13 with respect to the game board according to the third embodiment. FIG. 12 is a cross-sectional view showing another embodiment of the guide rail.

  Here, based on the above-described drawings, the correspondence between the constituent elements of the present embodiment and the constituent elements of the present invention will be clarified in describing the mode for carrying out the present invention. The pachinko gaming machine 20 of the present embodiment corresponds to the gaming machine of the present invention, the symbol variation display device 52 corresponds to the symbol variation display device, the game board 50 corresponds to the game board, and the injection mold 100 is provided. It corresponds to a mold, and the nesting mold 13 corresponds to nesting. Other components use the same terms as the components of the present embodiment and the components of the present invention.

(First embodiment)
Hereinafter, an injection mold according to the first embodiment, a method of molding a game board using the injection mold, and the game board will be described in detail with reference to the drawings.

  First, the configuration of the pachinko gaming machine 20 to which a game board molded by the mold of the present invention is attached will be briefly described with reference to FIGS. Here, FIG. 1 is a perspective view showing an outline of the configuration of the pachinko gaming machine 20, FIG. 2 is a front view of the pachinko gaming machine 20, and FIG. 3 is a rear view of the pachinko gaming machine 20. As shown in FIG. 1, the pachinko gaming machine 20 includes an outer frame 22 that is sandwiched and supported by an island such as a pachinko hall between an upper plate and a lower plate, and a main body portion 30 that is pivotally supported by the outer frame 22. And a transparent plate holding frame 71 which is provided on one side of the main body 30 and is pivotally mounted by a hinge (not shown) so as to be opened and closed.

  As shown in FIG. 2, the main body 30 includes a game board 50 including a game area 51, a launching handle 32 that is rotatably provided at one side position of the front lower part, and a game ball (not shown) that is provided at the lower front part. And a speaker 36 that is provided at both sides of the main body 30 and emits a production sound or the like. Further, on the back side of the main body 30, as shown in FIG. 3, a ball payout device 40 for supplying a prize ball or a rental ball from a ball tank 38 provided at the upper portion, and a ball payout control enclosed in an enclosing case A main board including the board 48 and the main control board 70 and a peripheral board including the lamp control board 49 and the sound / display control board 80 are provided.

  As shown in FIG. 2, the game board 50 is positioned substantially at the center and has a large liquid crystal panel for displaying various effects by winning a prize or the like, or a big prize located below the symbol fluctuation display apparatus 52. It has a plurality of winning ports 56 located on both sides of the mouth 56a and the big winning port 56a, and has a game area 51 where a group of obstacle nails composed of a windmill and a number of obstacle nails is appropriately arranged on the surface. A game ball (not shown) in the ball tray 34 is guided to a hit ball launching device (not shown) via a hitting ball supply device (not shown), and is launched into the game area 51 with a strength corresponding to the degree of rotation of the launch handle 32. When a game ball injected into the game area 51 having the obstacle nail group, the winning hole 56, and the like by a launching device (not shown) passes through the windmill and the obstacle nail group and reaches the winning hole 56 and the big winning hole 56a, the winning hole 56 and a winning ball switch provided at the big winning opening 56a, and the main control board 70 receives the winning signal and is treated as a winning. In this case, a ball payout signal is transmitted from the main control board 70 to the ball payout control board 48, and a prize ball is supplied from the ball tank 38 via the ball payout device 40 to the ball receiving tray 34, so that the player You can get a prize ball.

  Before describing the injection mold 100, FIGS. 4 and 5 will be used to define the range of the guide rail 53 and the area of the game board 50 in this specification and the appended claims. I will explain. FIG. 4 is a diagram showing a state in which only guide rails are attached to the surface of the game board 50, and FIG. 5 is a diagram showing a state in which various decoration devices are attached to the game board 50. In this specification, as shown in FIG. 4, the inner guide rail 53a is a guide in the range (A range) from the lower end of the game ball cushioning member 53c to the portion of the return ball prevention device via the out port 56b. A rail. The outer guide rail 53b is a guide rail in a range (B range) from the upper end of the game ball cushioning member 53c to the lower left end of the game board via the return ball prevention device. The game area forming guide rail portion 53d is a guide rail that forms a range (game area) through which the game ball can pass after the game ball passes through the return device, that is, the entire inner guide rail 53a, and the game ball buffer. Of the member 53c and the outer guide rail, it means a guide rail in a range (range C) from the upper end of the buffer member to the return ball prevention device. As shown in FIG. 5, the game area 51 is an area through which the game ball can pass after passing through the return ball prevention device 57, that is, inside the game area formation guide rail portion 53d. This refers to the area where the display device 52 is arranged (the hatched area in FIG. 5). The shot ball passage area 55 is an area that guides the released game ball to the game area 51 and refers to an area between the return ball prevention device 57 (a range indicated by a mesh line in FIG. 5). The non-game area 59 is an area in the game board 50 and is an area other than the game area 51 and the shot ball passing area 55, that is, an area where no game ball passes.

  As shown in FIG. 6, an injection mold 100 according to the first embodiment is a mold for molding the game board 50 described above by injection molding. As shown in FIG. 6, the injection mold 100 according to the first embodiment includes a fixed mold 11, a movable mold 12, and a nested mold 13 that can be freely attached to the movable mold 12. Note that the injection mold 100 in FIG. 6 is schematically shown, and detailed structures such as a gate and an ejector pin are omitted.

  The nesting die 13 includes a convex portion 13a that forms an attachment hole 50a for attaching a winning device, a symbol variation display device, or various decorative members. As shown in FIG. 7, the nesting mold 13 is formed larger on the game area 51 side of the game board 50 than the virtual line 58 that is inward by the radius of the game ball 90 and smaller than the game area 51. Is formed. Further, with respect to the movable mold 12, as shown in the partially enlarged view of FIG. It is attached so that it may be located outside 58 and in the game area 51. Therefore, when the game board 50 is molded, an unevenness (hereinafter referred to as “nesting line 60”) is formed between the gaming area forming guide rail portion 53d and the virtual line 58 as a trace of the outer periphery by the nesting die 13. Become.

  Using the injection mold 100 thus configured, as shown in FIG. 8, in a state where a transparent polycarbonate is melted in the cavity 14 formed between the fixed mold 11 and the movable mold 12. By injection, filling, and cooling and solidifying, the fixed mold 11 side forms the back side of the game board 50, the movable mold 12 side molds the front side of the game board 50, and the insertion hole 50 a is formed by the insert mold 13. A game board 50 is obtained.

  Since the game board 50 formed in this way is provided with an attachment hole 50a for attaching a winning device, a symbol variation display device, or various decorative members, etc., through a process of making the attachment hole 50a in a later step. It is possible to attach necessary decorative members such as obstacle nails, windmills, guide rails, variable winning devices, and starting winning devices. Then, as shown in FIG. 5, the decorated game board 50 is completed.

  As shown in FIG. 6, the game board 50 thus molded has a slight nesting line 60 during injection molding. However, since the outer periphery of the nesting die 13 is arranged outside the virtual line 58 formed on the inner side by the length a of the radius of the game ball 90 from the outer periphery of the game area 51 as shown in FIG. A nesting line 60 is generated near the outer periphery of the game area 51. Therefore, it is possible to prevent the appearance of the appearance from being impaired as compared with the case where the nesting line 60 is generated near the center of the game area 51. Further, the nesting line 60 is generated on the front side of the game board 50, but the nesting line 60 is formed from the outer periphery of the game area 51 to the inside of the length of the radius of the game ball 90. It is possible to prevent the game ball 90 from touching the nesting line 60. Therefore, it is possible to prevent the game ball from being affected by the unevenness of the nesting line 60.

  After molding the required number of game boards 50, when molding different types of game boards having different shaped attachment holes, by replacing the insert mold 13, the game boards having different attachment holes are obtained. Can be produced. For example, in the case of forming a game board with different attachment holes for attaching the symbol variation display device, as shown in FIG. 9 (a), a convex portion forming an attachment hole for attaching the symbol variation display device. What is necessary is just to replace | exchange and shape | mold to the nesting type | mold 13 from which 13a differs. Further, in the case of producing a game board constituting a board surface on which the liquid crystal display device is arranged on the back side of the game board, as shown in FIG. 9 (b), a convex for forming an attachment hole for attaching the symbol variation display apparatus. What is necessary is just to use the nested type 13 without the part 13a. Further, when the nested mold 13 shown in FIG. 9B is used, it is possible to form an attachment hole for attaching an arbitrary symbol variation display device to the game board in a later process. Therefore, it is effective when producing a small-lot game board.

(Second Embodiment)
FIG. 10 shows the size and position of the insert mold 13 formed by the injection mold 100 according to the second embodiment. In the injection mold 100 according to the second embodiment, the nesting die 13 has the same size as the gaming area 51, and the nesting line 60 is generated below the gaming area forming guide rail portion 53d. It can be attached to the injection mold 100. Since the configuration other than the above is the same as that of the first embodiment, the description thereof is omitted.

  According to the second embodiment, since the nesting line 60 is generated below the game area formation guide rail portion 53d, the nesting line 60 is not generated in the game area 51 and is nested at the game area formation guide rail portion 53d. Since the line 60 can be concealed, in a state where the game board 50 is attached to the pachinko gaming machine 20, the player cannot visually recognize the nested line 60 from the outside. Therefore, it is possible to almost completely prevent the possibility of impairing the appearance. Further, since the nesting line 60 can be prevented from occurring in both the game area 51 and the shot ball passing area 55, the possibility that the nesting line 60 affects the trajectory of the game ball 90 can be prevented.

(Third embodiment)
FIG. 11 shows the size and position of the insert mold 13 formed by the injection mold 100 according to the third embodiment. The injection mold 100 according to the third embodiment is such that the nesting die 13 includes a game area 51 and a shot ball passage area 55, and the entire outer guide rail 53b, the game ball cushioning member 53c, and the inner side It can be attached to the injection mold 100 so that the nesting line 60 is generated in a part of the guide rail 53a, that is, the nesting line 60 is generated on the outer periphery of the game area 51 and the shot ball passing area 55. ing. The other configuration is the same as that of the first embodiment.

  According to the third embodiment, since the nesting line 60 is generated outside the game area 51 and the shot ball passing area 55, the nesting line 60 is nested from the outside in a state where the game board 50 is attached to the pachinko gaming machine 20. The line 60 cannot be visually recognized. Therefore, it is possible to almost completely prevent the appearance from being impaired. Further, since the nesting line 60 can be prevented from occurring in both the game area 51 and the shot ball passing area 55, the possibility that the nesting line 60 affects the trajectory of the game ball 90 can be prevented.

  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.

  For example, in the first embodiment described above, the guide rails 53 have been described using game boards to which only vertical plate-like objects are attached. However, as shown in FIG. A side wall portion 54a may be provided along 53, and an inclined surface portion 54b that gently slopes toward the game area 51 may be provided so as to extend in a lateral direction from a mounting portion of the side wall portion 54a. By adopting such a configuration, the nesting line 60 can be hidden by the inclined surface portion 54b, so that appearance of the appearance can be prevented from being impaired. In addition, in the projecting ball passage region 55, as shown in FIG. 12b, a side wall portion 54a disposed on both outer sides of the inner guide rail 53a and the outer guide rail 53b and a bottom wall portion 54c for connecting them is provided. An inclined surface portion 54b that is gently inclined toward the game area 51 so as to extend from the lower side of the side wall portion 54a on the inner guide rail 53a side to the side direction with respect to the letter-shaped launching ball passage guide path, It is also possible to provide a launch ball passage guiding path 54 having an F-shaped cross section. By adopting such a configuration, similarly, since the nesting line 60 can be hidden by the inclined surface portion 54b, it is possible to prevent the appearance from being deteriorated. Furthermore, when the firing ball passage guiding path 54 is provided, the inner guide rail 53a can be omitted. In general, the guide rail collides with a game ball, so that it is made of metal in consideration of durability. However, in the launch ball passage region 55, the launch ball rises mainly along the outer guide rail. This is because durability is not necessary.

  In the embodiment described above, the fixed mold 11 side forms the back side of the game board 50 and the movable mold 12 side forms the front side. However, the fixed mold 11 side molds the front side of the game board 50. The movable mold 12 side may mold the back side. In that case, the convex part which forms the attachment port of the insert mold 13 forms an inverted shape as compared with the first embodiment. If such a configuration is adopted, the nesting line 60 is generated on the back surface side, so that the influence of the nesting line 60 on the game ball 90 can be prevented.

  Further, in the above-described embodiment, three forms are shown as examples of the size and position of the nesting type, but the present invention is not limited to this. Various modifications are possible without departing from the scope described in the claims. Nested size and position of size and position can be employed. For example, a nested size and position may be generated in the non-game area 59.

  Further, in the above-described embodiment, all the attachment holes 50a for attaching the winning device, the symbol variation display device, or various decorative members are formed by the nesting mold 13, but all the attachment holes 50a are not necessarily formed. The nesting mold 13 may not be provided. In such a case, drilling may be performed by post-processing.

  In the above-described embodiment, only molding is performed during the molding process, but in-mold molding process in which both molding of the resin for the game board and sticking of the decorative sheet to the resin surface are performed simultaneously. You may have. If it carries out like this, the effort at the time of shaping | molding the game board 50 can be reduced compared with the case where it has two processes, a formation process and a sticking process.

  Further, in the above-described embodiment, colorless and transparent polycarbonate is used as the material of the game board. However, the present invention is not limited to this, and other resins such as an acrylic resin such as polymethyl methacrylate resin and an ABS resin may be used. Also good. The resin is not necessarily colorless and transparent, and a colored transparent resin or an opaque resin may be used.

  As shown in the above-described embodiment, the present invention can be used in the field of resin plate molding, in particular, in the field of game board molding for gaming machines.

DESCRIPTION OF SYMBOLS 11 ... Fixed type, 12 ... Movable type, 13 ... Nesting type, 13a ... Convex part, 14 ... Cavity, 20 ... Pachinko machine, 22 ... Outer frame, 30 ... Main part, 32 ... Launch handle, 34 ... Ball tray, 36 ... Speaker, 38 ... Ball tank, 40 ... Ball payout device, 48 ... Ball payout control board, 49 ... Lamp control board, 50 ... Game board, 50a ... Mounting hole, 51 ... Game area, 53 ... Guide rail, 53a ... inner guide rail, 53b ... outer guide rail, 53c ... game ball cushioning member, 53d ... game area forming guide rail portion, 54 ... fire ball passing guideway, 54a ... side wall portion, 54b ... inclined surface portion, 54c ... bottom wall portion 55 ... Launch ball passage area, 56 ... Winning opening, 56a ... Outstanding winning opening, 56b ... Out opening, 57 ... Ball prevention device, 58 ... Virtual line, 59 ... Non-game area, 60 ... Nesting line, 70 ... Main control Board, 7 ... transparent plate holding frame, 80 ... audio and display control board, 90 ... game ball, 100 ... injection mold

Claims (6)

In a mold for forming a game board for a gaming machine having a nesting for forming an attachment hole for attaching a winning device, a symbol variation display device or various decorative members,
The mold is characterized in that an outer periphery of the nesting is disposed outside an imaginary line formed on the inner side by the length of the radius of the game ball from the outer periphery of the game area.   The mold according to claim 1, wherein an outer periphery of the nesting is disposed on an outer periphery of the game area.   2. The outer periphery of the nesting is disposed outside the imaginary line formed on the inner side by the length of the radius of the game ball from the outer periphery of the game area and disposed in the game area. Mold.   2. The mold according to claim 1, wherein the outer periphery of the nest is partially or entirely disposed at a position outside the game area and outside the shot ball passage area. In the game board shaping | molding method using the metal mold | die of any one of Claim 1 to 4,
Attaching the insert corresponding to the shape of the attachment hole to be formed to the mold;
Filling and solidifying the synthetic resin in the mold to which the insert is attached;
A game board molding method using a mold characterized by comprising:   A game board formed using the mold according to any one of claims 1 to 4.

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