Surfboard

Abstract

To provide a surfboard which achieves weight reduction of a body and improvement in impact resistance while reducing an environmental load by using a recycled material, has a large transparent body, and is excellent in appearance, and a recycling method for the same.SOLUTION: A substantially polygonal hollow unit 103 is provided in a surfboard body unit 100. A surfboard frame unit 106 formed by an air tight cabin which is in a ring structure formed by a plastic composite material exists to surround the hollow unit 103, and the hollow unit 103 is sealed to be air tight continued without steps to a deck surface and a bottom surface of the surfboard frame unit 106 at a transparent deck unit 104 and a transparent bottom unit 105 formed by a transparent resin including a recycled polyester resin. A reinforcement unit 107 formed by a thermoplastic resin is provided to support the transparent deck unit 104 and the transparent bottom unit 105 along a longer direction of the surfboard body unit 100 in the hollow unit 103.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a surfboard having a transparent portion and a recycling method thereof.

Background Art

[0002] Many surfboards have a reinforced structure in which the surface of a foamed urethane foam base material obtained by adding a foaming agent to polyurethane is coated with glass fibers.

[0003] Here, there is a proposed surfboard in which a hollow chamber is formed in a surfboard made of a synthetic resin foam and a transparent plate is fitted, and the state of the sea can be seen from above the surfboard (Patent Document 1). In addition, a transparent surfboard is known in which 90% or more of the surfboard is made of a transparent structure using polycarbonate (PC), and the periphery thereof is composed of bead foam polystyrene (EPS) (Non-Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Non-Patent Documents

[0005]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, the transparent window of the surfboard described in Patent Document 1 is a transparent window configured using a relatively small-sized acrylic plate, glass plate, or the like that does not significantly affect the strength of the entire surfboard made of synthetic resin foam. Therefore, it is difficult to make most of the surfboard transparent in the same way from the structural aspect such as strength.

[0007] In addition, the surfboard described in Non-Patent Document 1 uses PC as the material of the transparent structure, so it is easily scratched, and can be easily scratched just by rubbing with a brush and lose its transparency, or is vulnerable to organic solvents and surfactants, so there is a problem that chemical cracks occur and it cracks due to chemicals. Furthermore, the surfboard described in Non-Patent Document 1 belongs to a so-called shortboard with a not very large size, and it is difficult to realize a longboard with the same material.

[0008] The present invention has been made in consideration of such circumstances, and aims to reduce the environmental load using recycled materials, while achieving weight reduction of the body and improvement of impact resistance, and to provide a surfboard with an excellent aesthetic appearance having a large transparent body and a recycling method thereof.

Means for Solving the Problems

[0009] In order to solve the above problems, the surfboard according to the present invention includes a surfboard frame portion formed of an airtight cabin having an annular structure in which a substantially elliptical or substantially polygonal cutout portion having a major axis in the longitudinal direction of the surfboard body is disposed in a substantially central majority of the surfboard body formed of a plastic composite material, a transparent deck portion and a transparent bottom portion formed of a transparent resin containing recycled polyester resin that airtightly seals the cutout portion so as to be continuously connected to the deck surface and the bottom surface of the surfboard frame portion without a step, and a reinforcing portion composed of a thermoplastic resin plate that supports the transparent deck portion and the transparent bottom portion across the longitudinal direction of the surfboard body within the cutout portion.

[0010] In order to solve the above problems, a method for recycling a surfboard according to the present invention includes a recovery step in which a recycling company recovers used PET bottles collected by users of a store that rents or sells surfboards, and a manufacturing step of manufacturing the surfboard according to claim 1 or 2, which is formed of a transparent resin containing recycled polyester resin recycled from the used PET bottles recovered by the recycling company and having a transparent part, a sales step in which the store rents or sells the surfboard to the user, and an information transmission step in which the user transmits, via SNS, an eco-activity experience of purchasing the surfboard or surfing using the surfboard. In the recovery step, when the recycling company recovers the used PET bottles from the user, recycling points corresponding to the recovery amount of the used PET bottles are given to the user, and in the sales step, the user rents or purchases the surfboard at a discount according to the number of recycling points held.

Effect of the Invention

[0011] According to the present invention, it is possible to provide a surfboard with excellent aesthetics having a large transparent body while reducing the environmental load by using recycled materials, reducing the weight of the body, and improving the impact resistance.

Brief Description of the Drawings

[0012]

Figure 1

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Figure 11

Figure 12

Mode for Carrying Out the Invention

[0013] Hereinafter, with reference to the drawings, the surfboard 1 according to an embodiment of the present invention will be described. Note that the shading shown on the entire surface of the articles in each figure is the shading for specifying the shape of the three-dimensional surface.

[0014] FIG. 1 and FIG. 2 are the upper perspective view and the lower perspective view of the surfboard 1 according to an embodiment of the present invention, respectively. Further, FIGS. 3-8 are the six views of the surfboard 1 according to an embodiment of the present invention. Specifically, FIG. 3 is the plan view of the surfboard 1, FIG. 4 is the bottom view, FIG. 5 is the front view, FIG. 6 is the rear view, FIG. 7 is the right side view, and FIG. 8 is the left side view. As shown in FIGS. 1-8, the surfboard 1 includes a surfboard main body 100 and a fin portion 200 for assisting the control and turning of the surfboard 1.

[0015] Here, in the surfboard main body 100, the end portion in the traveling direction in the wave-riding state is the nose 101, and the other end portion is the tail 102. Further, when riding a wave, the upper side of the surfboard main body 100 on which the surfer (rider) rides is the deck surface, and the lower side of the surfboard main body 100 pressed against the sea surface is the bottom surface.

[0016] On the tail 102 of the bottom surface of the surfboard main body 100, a fin unit 200 that functions as a rudder in the surfboard 1 is detachably attached. In this embodiment, the fin unit 200 is composed of three fins 201 - 203, but the number of fins is not limited to three, and it may be one or a plurality of other numbers.

[0017] In approximately the central part of the surfboard main body 100 according to this embodiment, a substantially hexagonal hollow part 103 having a substantially elongated hole shape in the longitudinal direction of the surfboard 1 is formed. And the space of this hollow part 103 is hermetically sealed on the deck surface and the bottom surface by a transparent deck part 104 and a transparent bottom part 105 of a colorless transparent resin so that air and seawater do not enter the hollow part 103. That is, the surfboard main body 100 includes a surfboard frame part 106 formed in an airtight cabin having an annular structure with a hollow part 103 like a donut shape, a transparent deck part 104, and a transparent bottom part 105.

[0018] In this embodiment, the transparent deck part 104 and the transparent bottom part 105 are transparent parts formed of a colorless transparent resin. In FIGS. 1, 2, and FIGS. 3 and later, the transparent deck part 104 and the transparent bottom part 105 are colored for convenience, but actually they are transparent and colorless. In this way, the surfboard 1 is provided with a large transparent part near the center of the surfboard main body 100, and the surfer can enjoy the fun of looking into the sea when paddling, riding waves, or waiting for waves at a surf point.

[0019] In this embodiment, the transparent deck portion 104 and the transparent bottom portion 105 are formed of a transparent resin containing, for example, a recycled polyester material obtained by melting and recycling plastic members obtained by decomposing or disassembling used PET bottles (discarded PET bottles, waste PET) or by chemical recycling. By riding on the surfboard 1 according to this embodiment that reuses such discarded PET bottles, surfers can, for example, also participate in ecological activities and feel a contribution to ocean protection, and can feel the vitality and fragility of the beautiful sea with their skin.

[0020] FIGS. 9 and 10 are an upper perspective exploded view and a lower perspective exploded view of the surfboard 1 according to an embodiment of the present invention. In FIGS. 9 and 10, a state before the transparent deck portion 104 and the transparent bottom portion 105 are fitted and adhered to the surfboard main body portion 100 is shown, in which the transparent deck portion 104 and the transparent bottom portion 105 are removed and the space of the hollow portion 103 is exposed, and the surfboard 1 is depicted as a reference figure.

[0021] In FIGS. 9 and 10, in the hollow portion 103 of the surfboard main body portion 100, a reinforcing portion 107 formed of a thermoplastic resin (ABS resin) is provided to support the transparent deck portion 104 and the transparent bottom portion 105 over the longitudinal direction of the surfboard main body portion 100. In this embodiment, the reinforcing portion 107 is composed of two reinforcing plates 107A and 107B formed of ABS resin. Note that, in this embodiment, the reinforcing portion 107 (the reinforcing plates 107A and 107B) may be a transparent portion formed of, for example, transparent ABS resin and may be colorless and transparent like the transparent deck portion 104 and the transparent bottom portion 105. Further, the reinforcing portion 107 may be, for example, a colored and transparent member or a translucent / opaque member in order to provide an impact to the space of the hollow portion 103 that is transparent.

[0022] In this embodiment, the hollow portion 103 is a long hole having a substantially hexagonal shape that is substantially elongated in the longitudinal direction in the substantially central portion of the surfboard 1. However, alternatively, for example, a long hole having a substantially elliptical shape or a substantially polygonal shape other than a substantially hexagonal shape having a major axis in the longitudinal direction may be formed in the substantially central portion of the surfboard 1. In the surfboard 1 according to this embodiment, the hollow portion 103 is not formed in the nose 101 portion and the tail 102 portion of the surfboard main body portion 100, and as will be described later, the urethane foam base material is sandwiched between plastic composite materials such as fiber-reinforced plastic (FRP) to increase the strength of the surfboard main body portion 100.

[0023] In this embodiment, the transparent deck portion 104 and the transparent bottom portion 105 are formed of a transparent resin containing a recycled polyester resin. The recycled polyester resin is, for example, a polyester fiber produced from used PET bottles, and the quality is guaranteed to be comparable to that of polyester fibers produced from petroleum-derived resources. Since the recycled polyester resin is made by processing and recycling the collected PET bottles into fibers, it does not need to be produced from petroleum components and is an environmentally friendly material.

[0024] Also, by molding the transparent deck portion 104 and the transparent bottom portion 105 with a transparent resin containing a recycled polyester resin, it overcomes the drawbacks of polycarbonate (PC), which is strong against heat and ultraviolet rays and has high impact resistance, but is easily scratched, loses its transparency easily just by rubbing with a brush, and is weak against organic solvents and surfactants and cannot be washed. It is possible to make a product that is highly transparent and promotes decarbonization due to being a recyclable material, making it environmentally friendly.

[0025] In addition, in this embodiment, it is appealed that the transparent deck portion 104 and the transparent bottom portion 105 are formed of a transparent resin using, for example, about 50 percent or more of the above-described recycled polyester resin, thereby contributing to the reduction of environmental load. However, it is not necessary to particularly limit the content rate of the recycled polyester resin. Even if the content rate is about several percent, it can contribute to the reduction of environmental load by that amount. Further, by using more recycled materials, a surfboard with a further reduced environmental load can be provided. Ultimately, in order to enhance this effect more, the transparent deck portion 104 and the transparent bottom portion 105 may be configured by members formed of recycled materials without mixing virgin plastics.

[0026] Further, the surfboard frame portion 106 is formed of a hard plastic composite material (e.g., FRP, etc.) reinforced with a fiber material. The plastic composite material is a reinforcing material in which a resin is impregnated in the fiber material, and materials such as fiber reinforced plastic (FRP: Fiber Reinforced Plastic), carbon fiber reinforced plastic (CFRP: Carbon Fiber Reinforced Plastic), and glass fiber reinforced plastic (GFRP: Glass Fiber Reinforced Plastic) are used. In this embodiment, for example, fiber reinforced plastic (FRP) is used as the material for the surfboard frame portion 106.

[0027] Further, inside the airtight cabin of the surfboard frame portion 106, a urethane foam base material having substantially the same shape as the shape inside the airtight cabin is filled. For example, the surfboard frame portion 106 includes a first surfboard frame portion 106a on the deck surface side of the surfboard main body portion 100 and a second surfboard frame portion 106b on the bottom surface side, with a urethane foam portion (not shown) sandwiched therebetween and bonded together, and a process (e.g., sanding with sandpaper, etc.) is performed to smooth the bonded joint portion.

[0028] FIG. 11 is a partially enlarged perspective view of the A-A cross section (see FIG. 3) of the surfboard main body 100 according to an embodiment of the present invention. As shown in FIG. 11, the transparent deck portion 104 and the transparent bottom portion 105 are adhered so as to hermetically seal the cutout portion 103 so as to be continuous with the deck surface and the bottom surface of the surfboard frame portion 106 without a step.

[0029] Specifically, as shown in FIG. 11, groove portions 106A and 106B for fitting the transparent deck portion 104 and the transparent bottom portion 105 are formed along the periphery of the cutout portion 103 on the deck surface and the bottom surface of the surfboard frame portion 106, respectively. The groove portions 106A and 106B are formed along the entire periphery of the cutout portion 103 on the deck surface and the bottom surface of the surfboard frame portion 106 with a width of several millimeters and a depth of about several millimeters to 10 millimeters.

[0030] Note that the end portion 106a1 on the cutout portion 103 side of the groove portion 106A is lower than the other outer end portion 106a2 by the thickness of the transparent deck portion 104 (about 2-3 millimeters). Similarly, the end portion 106b1 on the cutout portion 103 side of the groove portion 106B is lower than the other end portion 106b2 by the thickness of the transparent bottom portion 105 (about 2-3 millimeters). Thereby, the transparent deck portion 104 and the transparent bottom portion 105 hermetically seal the cutout portion 103 so as to be continuous with the deck surface and the bottom surface of the surfboard frame portion 106 without a step, and the deck surface and the bottom surface of the surfboard main body portion 100 can be formed as a continuous and smooth curved surface or flat surface without a step.

[0031] In the present embodiment, for example, the thickness of the transparent recycled resin of the transparent deck portion 104 is set to 3 millimeters or less, and the thickness of the transparent recycled resin of the transparent bottom portion 105 is made thinner than the thickness of the transparent deck portion 104. On the other hand, the thickness of the transparent recycled resin of the transparent bottom portion 105 is set to 2 millimeters or more, and the thickness of the transparent recycled resin of the transparent deck portion 104 is made thicker than the thickness of the transparent bottom portion 105.

[0032] The reason for making the thickness of the transparent recycled resin on the deck surface thicker than that on the bottom surface is that when a rider of the surfboard 1 hits their knee or the like against the deck surface, the deck surface may crack. Therefore, the thickness of the deck surface is increased to enhance its strength. On the other hand, increasing the thickness of the transparent resin of the transparent deck part 104 and the transparent bottom part 105 will lead to an increase in the weight of the surfboard 1, making it difficult for the rider to handle the surfboard 1. Therefore, considering the balance of the weight, strength, operability, etc. of the surfboard 1, the above structure is adopted.

[0033] Here, at the edge of the transparent deck part 104, there are formed claw parts 104a for fitting into the groove part 106A of the surfboard frame part 106 formed along the periphery of the cut-out part 103 on the deck surface of the surfboard main body part 100. The width of the claw part 104a is several millimeters, and the length is about several millimeters to 10 millimeters, which is substantially the same as the width and depth of the groove part 106A respectively. Then, the groove part 106A on the deck surface of the surfboard main body part 100 and the claw part 104a of the transparent deck part are hermetically sealed and fitted and adhered with an adhesive having a waterproof function.

[0034] Also, at the edge of the transparent bottom part 105, there are formed claw parts 105a for fitting into the groove part 106B of the surfboard frame part 106 formed along the periphery of the cut-out part 103 on the bottom surface of the surfboard main body part 100. The width of the claw part 105a is several millimeters, and the length is about several millimeters to 10 millimeters, which is substantially the same as the width and depth of the groove part 106B respectively. Then, the groove part 106B on the deck surface of the surfboard main body part 100 and the claw part 105a of the transparent deck part are hermetically sealed and fitted and adhered with an adhesive having a waterproof function.

[0035] Here, an openable and closable hole portion (not shown) for discharging air or water may be provided in at least one of the transparent deck portion 104 or the transparent bottom portion 105. Although the surfboard frame portion 106, the transparent deck portion 104, and the transparent bottom portion 105 are hermetically sealed using a waterproof adhesive after fitting, even if water enters the hollow portion 103 by any chance, the surfboard 1 can be made to function properly by providing a hole for discharging the water. Note that these hole portions may be structured such that the hole itself can be loosened or tightened with a simple screw, and moisture or expanded air that has entered the hollow portion 103 can be discharged to the outside of the surfboard main body portion 100 by adjusting the screw.

[0036] Similarly, an openable and closable hole portion (not shown) for discharging air or water may be provided in the surfboard frame portion 106. The surfboard frame portion 106 according to the present embodiment is formed of a first surfboard frame portion (not shown) on the deck surface side and a second surfboard frame portion (not shown) on the bottom surface side, which are formed of a hard plastic composite material reinforced with a fiber material such as FRP in a foamed urethane portion (not shown), and the two surfboard frames are bonded together with a waterproof adhesive or the like and formed, and the airtightness inside the frame is maintained. Here, even if water enters the inside of the frame of the surfboard frame portion 106 by any chance, the surfboard 1 can be made to function properly by providing a hole for discharging the water. Note that the hole portion may be structured such that the hole itself can be loosened or tightened with a simple screw, and moisture or expanded air that has entered the inside of the surfboard frame portion 106 can be discharged to the outside of the surfboard frame portion 106 by adjusting the screw.

[0037] In this embodiment, the reinforcing portion 107 is composed of two reinforcing plates 107A and 107B formed of a thermoplastic resin such as transparent ABS resin, and supports the transparent deck portion 104 and the transparent bottom portion 105 across the longitudinal direction of the surfboard main body portion 100 within the hollow portion 103. As shown in FIGS. 9, 10, and 11, a plurality of punched portions are continuously formed in the longitudinal direction of the surfboard main body portion 1 on the reinforcing plates 107A and 107B. Then, the two reinforcing plates 107A and 107B support the transparent deck portion 104 and the transparent bottom portion 105 so as to allow the surfboard main body portion 100 to deflect in a substantially vertical direction from the deck surface to the bottom surface when a rider gets on the surfboard 1. Further, by forming the reinforcing portion 107 itself of transparent ABS resin, the transparency of the hollow portion 103 hermetically sealed by the transparent deck portion 104 and the transparent bottom portion 105 is maintained, and it is excellent in appearance.

[0038] More specifically, in this embodiment, as shown in FIGS. 9, 10, and 11, substantially trapezoidal punched portions having the same or different shapes are formed in the thermoplastic resin plates forming the reinforcing portion 107. And by these punched portions being continuously formed in a row, it has a structure in which substantially ramen-like structures made of thermoplastic resin are continuously formed in a row. By making the inside of the thermoplastic resin plate constituting the reinforcing portion 107 into the above-described substantially trapezoidal punched shape, a margin for deflection on the deck surface can be provided when a rider gets on the surfboard 1. Thereby, the concave deflection of the transparent deck portion 104 can be allowed to a certain extent, and the strength of the surfboard main body portion 100 is increased.

[0039] In this embodiment, the thermoplastic resin plates (reinforcing plates 107A and 107B) constituting the reinforcing portion 107 are made into two sheets in consideration of the balance between weight and strength, etc., but it is not necessary to limit it to two sheets. As long as the weight of the rider on the deck surface of the surfboard 1 can be well dispersed by the transparent deck portion 104 and the deflection of the deck surface can be tolerated, it may be one sheet or three or more sheets. Further, the cutouts formed in the thermoplastic resin plate are not necessarily limited to a substantially trapezoidal shape, and as long as the weight of the surfer on the deck surface of the surfboard 1 can be appropriately supported by the strength of the thermoplastic resin plate itself in the cut-out state and the deflection of the resin plate, etc., it may be a rectangular shape such as a rectangular parallelepiped or a cube, a triangular shape, or other shapes.

[0040] As described above, the surfboard main body portion 100 according to this embodiment reduces the environmental load by using a transparent resin material containing a recycled polyester resin. Further, by making the materials, shapes, and sizes of the surfboard frame portion 106, the transparent deck portion 104, the transparent bottom portion 105, and the reinforcing portion 107 as described above, the weight reduction and impact resistance improvement of the surfboard main body portion 100 are achieved. Furthermore, since the surfboard main body portion 100 can be provided with a large transparent body, a surfboard excellent in aesthetic appearance can be provided.

[0041] In the surfboard main body portion 100 according to the above-described embodiment, the transparent deck portion 104 and the transparent bottom portion 105 are made of a colorless and transparent resin, but similar to the reinforcing portion 107, by making them into one or a plurality of colored transparent members, it is also possible to give variations to the designability of the surfboard main body portion 100.

[0042] As described above, the surfboard 1 has a large transparent body that looks great on Instagram, is excellent in aesthetics, and allows the inside of the sea to be fully visible even while the surfer is surfing (including paddling and riding), enabling the surfer to have an unprecedented and moving experience. In addition, the surfboard 1 is an environmentally friendly "eco product" made of recycled polyester resin, and by purchasing such an eco product, the surfer can experience eco activities through the purchase of the surfboard. Also, through the experience of eco activities, for example, the surfer will actively participate in recycling activities such as collecting and gathering used plastic bottles at the seaside where they surf themselves. Such used plastic bottles will be recycled and used in the manufacture of the surfboard 1 as described above.

[0043] FIG. 12 is a diagram for explaining a recycling method of the surfboard 1 according to an embodiment of the present invention. The recycling method of this embodiment can be realized in a circulation system 10 incorporating the reuse of polyester resin that makes use of the emotions of the surfer, who is a user of the surfboard 1, from the surfing experience and the recycling activity experience.

[0044] First, the administrator of the circulation system 10 plans and executes the construction of a scheme such as the design and manufacturing instructions of the surfboard 1 through the recycling of used plastic bottles. The recycling method planned by the administrator is realized, for example, through the transmission and reception of various information between the administrator computer 20, the manufacturer computer 21 of the surfboard 1 manufacturer, the lending and selling computer 22 of the rental company or sales company that rents or sells the surfboard 1, the user computers 23a, 23b,... of the users (such as surfers) who are users of the surfboard 1, and the recycling side computer 24 of the recycling company via a network 30 such as the Internet.

[0045] The following is an example of a recycling method including the recycling of used plastic bottles and the manufacture of the surfboard 1 in the circulation system 10.

[0046] First, the manufacturer of the surfboard receives, at the manufacturer computer 21, a manufacturing instruction (including the structure and design of the surfboard 1, etc.) based on the administrator's plan sent from the administrator's administrator computer 20, and based on the content, manufactures a surfboard 1 having a transparent part formed of a transparent resin containing recycled polyester resin recycled from used PET bottles collected by a recycler (STEP1). The structure, materials, etc. of the surfboard 1 manufactured here are those described using the drawings from FIG. 1 to FIG. 11 described above.

[0047] Next, the manufactured surfboard 1 is delivered to a rental company that rents the surfboard or a sales company that sells it based on the content of the administrator's plan. For example, the administrator adjusts the price and quantity of the surfboard 1 to be delivered or receives an order via the rental company or the lending / selling company computer 22 of the seller from the administrator computer 20. Then, the surfboard 1 is rented or sold to users (customers such as surfers) of the store that rents or sells the surfboard 1 (STEP2).

[0048] Then, the user purchases or rents the surfboard 1 from the above store and enjoys the surfing experience (STEP3). Here, the surfboard 1 is a so-called "eco-friendly product" using recycled materials, and the user will actually experience eco-friendly activities by purchasing or renting such an eco-friendly product.

[0049] The above users such as surfers who have experienced eco-friendly activities share information on SNS using user computers 23a, 23b, etc. about the excitement of the eco-friendly activity experience through surfing using the surfboard 1 (STEP4). For example, the user can appeal to own a surfboard 1 with a large transparent part that looks great on Instagram or own eco-friendly products, convey the sense of satisfaction of contributing to environmental protection, or share the beauty of the sea that can be seen while surfing. Also, the user can use user computers 23a, 23b, etc. to appeal on SNS for social contributions such as collecting used plastic bottles, or invite other surfers, etc. to hold or participate in recycling event at the beach, etc. which is implemented as one of the local exchange activities.

[0050] Then, the above users whose awareness of eco-friendly activities has improved carry out eco-friendly activities such as collecting used plastic bottles at the beach etc. by themselves (STEP5). When the above users carry out the eco-friendly activities, supporters such as other surfers and local residents for the activities can be obtained by the spread of the information sent on SNS. Therefore, the eco-friendly activities can be made not just an individual event but an event as a means of communication with local residents. Also, by deepening the communication between surfers and local residents, the understanding of local residents towards surfing can be deepened, and cooperation can be expected when conducting various events.

[0051] The used plastic bottles collected by the above users in this way are collected by the recycling company determined by contract etc. based on the plan of the administrator (STEP6). The recycling company processes the collected used plastic bottles to produce recycled polyester resin, delivers it to the manufacturer based on the planned content of the administrator, and the surfboard 1 in STEP1 described above is manufactured. The recycling company conducts data transmission and reception with the administrator computer 20 of the administrator and the manufacturer computer 21 of the manufacturer using the recycling side computer 24.

[0052] Here, when a recycler collects used PET bottles from users, recycling points corresponding to the amount of used PET bottles collected are given to the users, and the users add the recycling points given by the recycler to the recycling points each of them holds. With the recycling points of each user obtained in this way, when the user rents or purchases the surfboard 1 at the above store, they can receive a discount according to the number of points. That is, the above user can rent or purchase the surfboard 1 at a discount according to the number of recycling points they hold.

[0053] Note that the configurations and quantities of the components of the circulation system 10, the administrator computer 20, the manufacturer computer 21, the rental seller computer 22, the user computers 23a and 23b, and the recycling-side computer 24 described in this embodiment are examples, and they may be changed within a range not exceeding the scope of the present invention. Also, the process in the circulation system 10 is also an example, and deletion of each step, addition, or replacement with a new step is possible within a range not exceeding the scope of the present invention.

Explanation of Reference Numerals

[0054] 1 Surfboard 10 Circulation system 20 Administrator computer 21 Manufacturer computer 22 Rental seller computer 23a, 23b User computers 24 Recycling-side computer 30 Network 100 Surfboard main body 101 Nose 102 Tail 103 Cut-out part 104 Transparent deck part 104A, 105A Claw parts 105 Transparent bottom part 106 Surfboard frame part 106A, 106B Groove parts Ends of 106a1, 106a2, 106b1, 106b2 Reinforcing part 107 Reinforcing plates 107A, 107B Fin part 200 Fins 201, 202, 203

Claims

1. A surfboard frame part formed of an airtight cabin having an annular structure in which a substantially elliptical or substantially polygonal hollow part having a major axis in the longitudinal direction of the surfboard body is arranged in a substantially central part of the surfboard body formed of a plastic composite material, A transparent deck part and a transparent bottom part formed of a transparent resin containing a recycled polyester resin, which airtightly seal the hollow part so as to be continuously connected to the deck surface and the bottom surface of the surfboard frame part without a step, A reinforcing part composed of a thermoplastic resin plate that supports the transparent deck part and the transparent bottom part across the longitudinal direction of the surfboard body within the hollow part A surfboard characterized by comprising

2. The surfboard frame part is formed of a rigid plastic composite material reinforced with a fiber material, and groove parts for fitting the transparent deck part and the transparent bottom part are respectively formed along the periphery of the hollow part on the deck surface and the bottom surface of the surfboard frame part, The transparent deck part and the transparent bottom part are formed of a transparent resin containing a recycled polyester resin recycled from used PET bottles, and claw parts for fitting into the groove parts formed along the periphery of the hollow part on the deck surface and the bottom surface of the surfboard frame part are respectively formed at the edges of the transparent deck part and the transparent bottom part, The groove parts on the deck surface and the bottom surface of the surfboard frame part and the claw parts of the transparent deck part and the transparent bottom part are hermetically sealed and fitted and adhered to the hollow part by an adhesive having a waterproof function The surfboard according to claim 1, characterized in that

3. The thickness of the transparent resin of the transparent deck part is 3 millimeters or less, The thickness of the transparent resin of the transparent bottom part is thinner than the thickness of the transparent deck part The surfboard according to claim 1 or 2, characterized in that

4. The thickness of the transparent resin of the transparent bottom part is 2 millimeters or more, The thickness of the transparent resin of the transparent deck part is thicker than the thickness of the transparent bottom part The surfboard according to claim 1 or 2, characterized in that

5. In the thermoplastic resin plate constituting the reinforcing part, a plurality of cutout parts are continuously formed in the longitudinal direction of the surfboard body, and the thermoplastic resin plate bends to allow the load in a substantially vertical direction from the deck surface of the surfboard body, thereby allowing the load. The surfboard according to claim 1 or 2, characterized in that

6. The surfboard according to claim 5, wherein the thermoplastic resin plate has a structure in which a substantially ramen-shaped structure made of a thermoplastic resin is continuously formed in a row by continuously forming the plurality of cut-out portions having a substantially trapezoidal shape in a row.

7. The surfboard further includes a urethane foam portion having substantially the same shape as the shape inside the airtight cabin of the surfboard frame portion, wherein the surfboard frame portion has a configuration in which a first surfboard frame portion on the deck surface side of the surfboard main body and a second surfboard frame portion on the bottom surface side sandwich the urethane foam portion and are bonded together. The surfboard according to claim 1 or claim 2, characterized in that.

8. The surfboard according to claim 1 or 2, wherein the transparent deck portion and the transparent bottom portion are made of a transparent resin containing 50% or more of recycled polyester resin.

9. The surfboard according to claim 1 or 2, wherein no cut-out portion is formed in the nose portion and the tail portion of the surfboard main body.

10. A recovery process in which a predetermined recycling company recovers used PET bottles collected by users of a store that rents or sells surfboards; A manufacturing process for manufacturing the surfboard according to claim 1 or 2, which includes a transparent part formed of a transparent resin containing recycled polyester resin recycled from the used PET bottles recovered by the recycling company; A sales process in which the store rents or sells the surfboard to the user; An information transmission process in which the user transmits, via SNS, an eco-activity experience of purchasing the surfboard or surfing using the surfboard; In the recovery process, when the recycling company recovers the used PET bottles from the user, recycling points corresponding to the recovery amount of the used PET bottles are given to the user; In the sales process, the user rents or purchases the surfboard at a discount according to the number of recycling points held. A recycling method for a surfboard, characterized in that.

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