Upcycling surfboard fin utilizing denim and linen and manufacturing method therefor

Abstract

The present invention provides, as a technical gist, an upcycling surfboard fin using denim and linen and a manufacturing method therefor, the manufacturing method comprising: a denim layer preparing step of cutting denim to prepare a denim layer; a thin plate layer manufacturing step of cross-laminating thin plates and linen to form thin plate layers; a layer stacking step of applying an adhesive on the upper and lower sides of the denim layer and then respectively stacking the thin plate layers on the upper and lower sides of the denim layer, to which the adhesive has been applied, to form a mixed layer; a shape processing step of processing the mixed layer into a surfboard fin shape to form a fin layer; and a mother-of-pearl layer stacking step of stacking a mother-of-pearl layer on one surface or both surfaces of the fin layer to manufacture a surfboard fin.

Description

Upcycled surfboard fins made from denim and linen and their manufacturing method

[0001] The present invention relates to an upcycled surfboard fin using denim and linen and a method for manufacturing the same, and more particularly, to an upcycled surfboard fin using denim and linen that is eco-friendly by upcycling denim and linen and is not easily damaged by resistance or impact due to the advantages of being flexible, lightweight, and durable.

[0002] As living standards rise, the number of people engaging in leisure activities is increasing, and the types of leisure activities are becoming more sophisticated. Surfboarding is a prime example of a water-based leisure sport. Surfboarding involves riding waves, propelled by the force of the waves and the human hand. It requires a high level of skill to adapt one's body movements to the wave's motion. However, when surfing solely on the strength of the waves and the human hand, the sensation of speed is limited.

[0003] To address this, surfboards are equipped with fins that protrude downwards. These fins prevent the board from swaying, allowing it to safely navigate the waves and enjoy a faster ride. These fins are typically made of hard plastic, fiberglass, or metal that can withstand high resistance. They are attached to the body of the surfboard or kayak or installed using fasteners.

[0004] However, conventional surfboard fins are made of rigid materials like plastic, fiberglass, or metal. If they are continuously subjected to resistance or impact from waves, they can bend or become damaged. Furthermore, injuries to users and bystanders caused by rigid surfboard fins are on the rise, raising the need for greater user protection and safety.

[0005] The present invention has been devised to solve the above problems, and the purpose is to provide an upcycled surfboard fin and a manufacturing method thereof using denim and linen that are eco-friendly and have the advantages of being flexible, lightweight, and durable, and that are not easily damaged by resistance or impact.

[0006] The above object is achieved by a method for manufacturing an upcycled surfboard fin using denim and linen, characterized by including a denim layer preparation step of cutting denim to prepare a denim layer; a thin plate layer manufacturing step of forming a thin plate layer by cross-stacking thin plates and linen; a layer laminating step of forming a mixed layer by applying an adhesive to the upper and lower portions of the denim layer and then laminating the thin plate layers on the upper and lower portions of the denim layer to which the adhesive has been applied; a shape processing step of forming a fin layer by processing the mixed layer into a surfboard fin shape; and a mother-of-pearl layer laminating step of manufacturing a surfboard fin by laminating a mother-of-pearl layer on one or both sides of the fin layer.

[0007] Here, in the mother-of-pearl layer laminating step, it is preferable to sand one or both sides of the pin layer using sandpaper, then apply a coating material using an airbrush, and then laminate the mother-of-pearl layer.

[0008] The above object is also achieved by an upcycled surfboard fin utilizing denim and linen, which comprises a fin layer including a denim layer cut from denim, a thin plate layer laminated on the upper and lower sides of the denim layer by cross-laminating thin plates and linen, and a mother-of-pearl layer laminated on one or both sides of the fin layer, wherein the fin layer and the mother-of-pearl layer are processed into a surfboard fin shape.

[0009] As described above, according to the present invention, by upcycling denim and linen, an eco-friendly surfboard fin utilizing denim and linen can be obtained that is not easily damaged by resistance or impact due to the advantages of denim and linen being flexible, lightweight, and durable.

[0010] Figure 1 is a flow chart of a surfboard fin manufacturing method according to an embodiment of the present invention.

[0011] Figure 2 is an explanatory diagram showing the manufacturing steps of a thin plate layer.

[0012] Figure 3 is a cross-sectional view of a mixed layer,

[0013] Figure 4 is an explanatory diagram showing the shape processing steps.

[0014] Figure 5 is a perspective view of a pin layer obtained through a shape processing step.

[0015] Figure 6 is a perspective view of the mother-of-pearl layer.

[0016] <Explanation of symbols>

[0017] 100: Mixed Layer

[0018] 100a: Finlayer

[0019] 110: Denim Layer

[0020] 120: Thin layer

[0021] 200: Mother-of-pearl layer

[0022] S100: Denim layer manufacturing stage

[0023] S200: Thin-layer manufacturing stage

[0024] S300: Layer stacking stage

[0025] S400: Shape processing stage

[0026] S500: Mother-of-pearl layer stacking stage

[0027] Hereinafter, the technical concept of the present invention will be described in more detail using the attached drawings. The attached drawings are merely examples provided to more specifically explain the technical concept of the present invention, and therefore, the technical concept of the present invention is not limited to the form of the attached drawings.

[0028] FIG. 1 is a flowchart of a surfboard fin manufacturing method according to an embodiment of the present invention, FIG. 2 is an explanatory diagram showing a thin plate layer manufacturing step, FIG. 3 is a cross-sectional view of a mixed layer, FIG. 4 is an explanatory diagram showing a shape processing step, FIG. 5 is a perspective view of a fin layer obtained through a shape processing step, and FIG. 6 is a perspective view of a mother-of-pearl layer.

[0029] A method for manufacturing an upcycled surfboard fin using denim and linen according to an embodiment of the present invention includes a denim layer preparation step (S100), a thin plate layer manufacturing step (S200), a layer lamination step (S300), a shape processing step (S400), and a mother-of-pearl layer lamination step (S500), as illustrated in FIG. 1.

[0030] The denim layer preparation step (S100) refers to the step of preparing a denim layer (110) by cutting denim.

[0031] Denim is a cotton fabric woven with yarn-dyed yarn, making it a durable and highly practical fabric. Traditional denim is woven with a dark blue warp and a gray or unbleached weft. Because of its strength and durability, it is used in a variety of garments, such as shirts, pants, and shoes. However, denim does not readily decompose in nature when discarded, causing environmental pollution. Therefore, efforts are being made to recycle denim. Accordingly, the present invention prepares a denim layer (110) by cutting discarded denim from shirts, pants, shoes, etc., and thoroughly washing the cut denim.

[0032] Here, since the denim layer (110) has a relatively thick thickness of 0.9 to 1.0 mm, it is preferable to form a single layer. However, if the surfboard fin needs to be thicker or have high durability, it is preferable to form the denim layer (110) by laminating multiple denims. At this time, the multiple denims can be laminated in a state where the fabric grain is rotated by 30 to 50°, and among them, laminating in a state where the fabric grain is rotated by 45° is most preferable, but is not limited thereto.

[0033] The thin plate layer manufacturing step (S200) refers to a step of forming a thin plate layer (120) by cross-stacking thin plates and linen, as illustrated in FIG. 2.

[0034] Linen refers to a fabric woven from flax fibers, which are bast fibers obtained from the stem of the flax plant. It has high thermal conductivity and is stiff, so it is flexible while maintaining its shape, making it suitable as a material for surfboard fins. The present invention uses linen having a thickness of 0.2 to 0.3 mm. Here, as with the denim layer (110), it is preferable to prepare linen by cutting discarded linen from shirts, pants, etc. and washing the cut linen cleanly.

[0035] The veneer is laminated to provide strength to the surfboard fin, and is made of a harder material than linen. Ideally, the veneer should be a paper-thin, natural wood veneer. The veneer can be any of natural veneer, laminated veneer, dry veneer, or wet veneer. The thickness of the veneer is preferably 0.2 to 0.3 mm, but is not limited thereto.

[0036] By cross-stacking such thin plates and linen, a thin plate layer (120) is formed. Specifically, three thin plates and two linens are cross-stacking in a thin plate-linen-thin plate-linen-thin plate shape to form a thin plate layer (120). At this time, it is preferable that the two linens forming the thin plate layer (120) are stacked so that their grain directions are different from each other, and it is preferable that the remaining linens are stacked in a state where the fabric grain of one linen is rotated by 30 to 50 degrees.

[0037] The layer lamination step (S300) refers to a step of forming a mixed layer (100) by applying adhesive to the upper and lower parts of a denim layer (110), as illustrated in FIG. 3, and then laminating a thin plate layer (120) on the upper and lower parts of the denim layer (110) to which the adhesive has been applied.

[0038] A mixed layer (100) is formed by placing a soft denim layer (110) composed of one or more layers in the center and laminating a thin layer (120) composed of a stronger material than the denim layer (110) on the upper and lower portions of the denim layer (110), respectively. When the denim layer (110) and the thin layer (120) are laminated in this manner, flexibility and durability are improved due to the presence of the denim layer (110) in the center, and the presence of the thin layer (120) on the upper and lower portions of the denim layer (110) allows the surfboard fin to stably maintain its shape without being excessively bent by waves.

[0039] In order to form such a mixed layer (100), an adhesive is applied to the upper and lower parts of a denim layer (110), and then a thin plate layer (120) is laminated on the upper and lower parts of the denim layer (110) to which the adhesive is applied, respectively. Then, the mixed layer (100) composed of the denim layer (110), the adhesive, and the thin plate layer (120) is pressed at a high pressure of 8 to 10 kg / cm2 to form the mixed layer (100).

[0040] Here, the adhesive can be either glue or epoxy. Glue is a mixture of glutinous rice paste and raw lacquer in a weight ratio of 6:4, and is dried at a temperature of 25 to 30℃ for 24 hours at a humidity of 70 to 80% to achieve bonding. In addition, a two-component epoxy consisting of a base and a hardener is used, and stable bonding is achieved when dried at 25℃ for 24 hours.

[0041] In this way, the laminated mixed layer (100) using an adhesive is composed of a thin layer (120) - adhesive - denim layer (110) - adhesive - thin layer (120). At this time, the adhesive is adhered while permeating the space between the fibers of the denim, thereby enabling more solid adhesion between the thin layer (120) and the denim layer (110).

[0042] The shape processing step (S400) refers to a step of forming a fin layer (100a) by processing the mixed layer (100) into a surfboard fin shape, as shown in FIGS. 4 and 5.

[0043] In order to process the mixed layer (100) firmly bonded with an adhesive into a surfboard fin shape, a CNC (computerized numerical control) processing method is used to form a fin layer (100a). Here, the CNC processing method is a processing method that combines computer technology and machine tools, and corresponds to a method of precisely processing a material using a computer program. This means that when a design file or CAD file created on a computer is input into a CNC machine controller, the machine can automatically process the corresponding design onto the material to create a product.

[0044] Therefore, using this CNC machining method, the mixed layer (100) is processed into a surfboard fin shape. Specifically, rough machining is performed on one side of the mixed layer (100) under the conditions of S18000 (S = spindle main axis rotation speed rpm) and F1500 (feed movement speed mm / min), and finish machining is performed under the conditions of S15,000 and F1300. After machining an anchor position on one side, an anchor is installed. Next, the mixed layer (100) is turned over, and rough machining and finish machining are performed on the other side of the mixed layer (100) under the same conditions as the one side, and then the surfboard fin shape input as a design file or CAD file is cut out to form the fin layer (100a). At this time, it is preferable to use a 2-flute core radius end mill for the rough machining and a 2-flute plan end mill for the cutout machining, but is not limited thereto.

[0045] The mother-of-pearl layer lamination step (S500) refers to a step of manufacturing a surfboard fin by laminating a mother-of-pearl layer (200) on one or both sides of a fin layer (100a).

[0046] In order to add beauty to a fin layer (100a) processed into a surfboard fin shape, a mother-of-pearl layer (200) of FIG. 6, which corresponds to a traditional craft, is additionally laminated on one or both sides of the fin layer (100a) to manufacture a surfboard fin. At this time, a sanding process is first performed to laminate the mother-of-pearl layer (200) on the fin layer. Specifically, one or both sides of the fin layer (100a) are sanded using sandpaper in the order of 180 grit → 240 grit → 400 grit → 600 grit, and then finished with dry sanding.

[0047] Next, the first coating is performed using an airbrush on the sanded pin layer (100a), and at this time, the coating material is modified lacquer or epoxy. After the first coating, wet sanding is performed using 800 grit sandpaper, and then the second coating is performed using the coating material, and after the second coating, wet sanding is performed using 1,000 grit sandpaper. After that, the mother-of-pearl layer (200) is laminated on the pin layer (100a), and wet sanding is performed on the surface of the mother-of-pearl layer (200) using 1,200 grit sandpaper, and then the third coating is performed using the coating material. Next, wet sanding is performed using 2,000 grit sandpaper, and then the mother-of-pearl layer (200) is polished using a compound of 3,000 grit. In some cases, a process may be carried out to additionally polish the mother-of-pearl layer (200) with soybean oil and then remove the oil by applying flour.

[0048] Here, the mother-of-pearl layer (200) laminated on the pin layer (100a) is manufactured by arranging mother-of-pearl appropriate for each object of the design after working on the design using CAD or Illustrator, etc. The mother-of-pearl is manufactured by mixing mother of pearl, black lip mother of pearl, Korean abalone, New Zealand abalone, and great green turban to suit the design.

[0049] As described above, a surfboard fin manufactured through a method for manufacturing an upcycled surfboard fin using denim and linen according to an embodiment of the present invention includes a fin layer (100a) including a denim layer (110) obtained by cutting denim, a thin plate layer (120) formed by cross-stacking thin plates and linen and laminated on the upper and lower sides of the denim layer (110); and a mother-of-pearl layer (200) laminated on one or both sides of the fin layer (100a); and the fin layer (100a) and the mother-of-pearl layer (200) are processed into a surfboard fin shape.

[0050] The upcycling surfboard fin according to the present invention is an eco-friendly surfboard fin made by upcycling denim and linen, and has the advantages of being flexible, lightweight, and durable, making it possible to obtain an upcycling surfboard fin using denim and linen that is not easily damaged by resistance or impact.

[0051] The present invention is not limited to the above-described embodiments, and the scope of application is diverse, and various modifications can be made without departing from the gist of the present invention as claimed in the claims.

Claims

1. Denim layer preparation stage where denim is cut to prepare denim layers; A step of manufacturing a thin plate layer by cross-laminating thin plates and linen to form a thin plate layer; A layer lamination step of forming a mixed layer by laminating the thin plate layer on the upper and lower parts of the denim layer to which the adhesive has been applied, after applying adhesive to the upper and lower parts of the denim layer; A shape processing step of forming a fin layer by processing the above mixed layer into a surfboard fin shape; and A method for manufacturing upcycled surfboard fins using denim and linen, characterized by including a mother-of-pearl layer lamination step of manufacturing a surfboard fin by laminating a mother-of-pearl layer on one or both sides of the fin layer.

2. In paragraph 1, The above mother-of-pearl layer stacking step is, A method for manufacturing upcycled surfboard fins using denim and linen, characterized by sanding one or both sides of the fin layer using sandpaper, applying a coating material using an airbrush, and laminating the mother-of-pearl layer.

3. A pin layer including a denim layer cut from denim and a thin plate layer laminated on top and bottom of the denim layer by cross-laminating thin plates and linen; and A mother-of-pearl layer laminated on one or both sides of the above pin layer; An upcycled surfboard fin using denim and linen, characterized in that the fin layer and the mother-of-pearl layer are processed into a surfboard fin shape.

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