Golf club shaft and method for manufacturing the same

Abstract

To provide a golf club shaft which has excellent design and furthermore is suppressed in reflection in all directions, and a method for manufacturing the same.SOLUTION: A golf club shaft is provided, in which a mat layer and a hologram layer are provided on an outer periphery of a golf club haft blank, and the mat layer is arranged outside the hologram layer in such a way as to include the hologram layer. In addition, a method for manufacturing the golf club shaft in the invention includes providing the hologram layer at least in a part on the outer periphery of the golf club haft blank and providing the mat layer in a region including the hologram layer. As a result, the golf club shaft which can be suppressed in reflection in all directions while having excellent design is provided.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a golf club shaft and a method for manufacturing the same. [Background technology]

[0002] 2. Description of the Related Art Conventionally, sporting goods such as golf clubs have been provided with a holographic layer from the viewpoint of brightness, design, and the like. For example, the surface of the hologram layer is covered with a transparent protective layer, and then a clear coating layer is provided to improve the durability of the decoration (Patent Document 1). Also, a hologram layer is placed on the outside of a sporting good and a colored coating layer is provided on top of it to conceal the color of the hologram layer and prevent the hologram layer from losing its color (Patent Document 2). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-182546 [Patent Document 2] Japanese Patent Application Laid-Open No. 2010-88373 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, adjustable golf clubs that allow adjustment of the lie angle and loft angle of the head have been sold. As a result of research, the inventor discovered that because the lie angle and loft angle of adjustable golf clubs can be changed, there is a problem in that light reflected from the hologram layer enters the field of view of the golfer holding the club, depending on the angle, which interferes with the golfer's concentration on play.

[0005] A primary object of the present invention is to provide a golf club shaft that has excellent design and yet suppresses reflections in all directions, and a method for manufacturing the same. [Means for solving the problem]

[0006] The present invention may include the following configurations. [1] A hologram layer and a matte layer are provided on the outer peripheral surface of a blank tube, A golf club shaft, wherein the matte layer is provided in an area including the hologram layer. [2] The golf club shaft according to [1], wherein at least one clear coating layer is disposed between the matte layer and the hologram layer. [3] The golf club shaft according to [1] or [2], wherein at least one color coating layer is disposed between the hologram layer and the matte layer. [4] The golf club shaft according to [3], wherein at least one clear coating layer is disposed between the color coating layer and the hologram layer. [5] A method of manufacturing a golf club shaft for obtaining a shaft for use in a golf club, comprising: providing a hologram layer on at least a portion of the outer circumferential surface of the blank tube; and providing a matte layer in the area including the hologram layer; A method for manufacturing a golf club shaft, comprising: [6] The method for manufacturing a golf club shaft according to [5], wherein a clear coating layer is provided in the area including the hologram layer. [7] The method for manufacturing a golf club shaft according to [5] or [6], wherein a color coating layer is provided in the area including the hologram layer. [8] The method for manufacturing a golf club shaft according to [7], wherein at least one clear coating layer is disposed between the color coating layer and the hologram layer. [Effects of the Invention]

[0007] According to the present invention, a golf club shaft having excellent design and suppressing reflection in all directions, and a method for manufacturing the same, are provided. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic view showing an example of a raw pipe used in a method according to an embodiment. [Figure 2] FIG. 2 is a schematic diagram showing an example of a layer structure formed by the method according to the embodiment. [Figure 3] FIG. 3 is a schematic diagram showing an example of a layer structure formed by the method according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Golf club shaft] In the golf club shaft according to the embodiment, a hologram layer and a matte layer are provided on the outer peripheral surface of a base tube, and the matte layer is provided in a region that encompasses the hologram layer.

[0010] "Providing a hologram layer on the outer peripheral surface of the base tube" includes providing a hologram layer directly on the outer peripheral surface of the base tube, as well as providing a hologram layer with another layer between it and the outer peripheral surface of the base tube. In a preferred embodiment, an undercoat layer, a base color layer, a clear coating layer, etc. are provided on the outer peripheral surface of the raw tube, and a hologram layer is provided on at least a part of the surface of these layers.

[0011] The phrase "layer A is provided in a region that encompasses layer B" means that layer A is provided so as to cover the entire layer B when viewed from the outside in the radial direction of the shaft. Specifically, this includes a configuration in which layer A is superimposed in the same region as layer B when viewed from the outside in the radial direction of the mother tube, as well as a configuration in which layer A is provided in a wider region that includes the region where layer B is provided. Therefore, "the matte layer is provided in the region that encompasses the hologram layer" means that the matte layer is provided so as to cover the entire hologram layer when viewed from the outside in the radial direction of the shaft.

[0012] Fig. 1 is a schematic diagram showing a golf club shaft 1 according to an example of an embodiment, and Fig. 2 is a cross-sectional view showing a schematic coating configuration of the golf club shaft 1. The golf club shaft 1 is a tubular body whose outer diameter changes from one end to the other in the axial direction. The golf club shaft 1 may have both a tapered portion and a portion with a constant diameter in the axial direction. The thin end 1a having a small outer diameter is the end on the tip side, and the thick end 1b having a large outer diameter is the end on the grip side.

[0013] As shown in FIG. 2, the golf club shaft 1 includes a blank tube 10, an undercoat layer 21a, a base color layer 21b, a clear coating layer 21c, a first hologram layer 22a, a first hologram protective layer 23a, a second hologram layer 22b, a printed layer 24, a second hologram protective layer 23b, a color coating layer 25, a color protective layer 26, and a matte layer 27.

[0014] The base tube 10 that serves as the base of the shaft is, for example, a laminate of a plurality of fiber-reinforced resin layers containing carbon fiber, and is usually a tubular body. The raw pipe 10 is manufactured by a sheet wrapping method in which a plurality of sheets of prepreg, such as UD prepreg, are wrapped around a mandrel, heated and cured to form a shape, and then the mandrel is pulled out.

[0015] Examples of reinforcing fibers used in the prepreg include carbon fibers and glass fibers, with carbon fibers being preferred. The matrix resin used in the prepreg may be a thermosetting resin or a thermoplastic resin, but a thermosetting resin is preferred because of its high physical properties after molding. Examples of thermosetting resins include epoxy resins such as bisphenol A epoxy resin and bisphenol F epoxy resin. One type of matrix resin may be used alone, or two or more types may be used in combination.

[0016] In the golf club shaft 1, an undercoat layer 21a, a base color layer 21b, and a clear coating layer 21c are provided in this order on the entire outer circumferential surface 10a of the mother tube 10. The undercoat layer 21a, the base color layer 21b, and the clear coating layer 21c can be formed by spray coating, ironing coating, or the like. In the golf club shaft according to the embodiment, it is not necessary to provide an undercoat layer, a base color layer, or a clear coating layer on the bare tube side of the hologram layer, but it is preferable to provide at least one of these layers.

[0017] The undercoat layer 21a is made of a coating material that has high adhesion to the base pipe and the layer to be formed on top of the undercoat layer. Examples of such coating materials include, without limitation, coating materials used as a base when applying a coating treatment to the surface of a resin member, such as "9-7010EP Shigoki Primer Dark Gray (registered trademark: manufactured by Mikuni Paint Co., Ltd.)." As the material for the base color layer 21b, various colored paints can be used, for example, black paint. The clear coating layer 21c may be made of, for example, a transparent or semi-transparent resin coating material, such as urethane resin, acrylic resin, acrylic urethane resin, alkyd resin, or polyester resin.

[0018] A first hologram layer 22a is provided on a portion of the surface of the clear coating layer 21c, and a first hologram protection layer 23a that covers the entire first hologram layer 22a when viewed from the radial outside of the shaft is provided over the entire outer circumferential surface 10a of the base tube 10. In addition, a second hologram layer 22b and a printed layer 24 are provided on a portion of the surface of the first hologram protective layer 23a, and a second hologram protective layer 23b that covers the entire second hologram layer 22b and the printed layer 24 when viewed from the radial outside of the shaft is provided over the entire outer surface 10a of the base tube 10.

[0019] The first hologram layer 22a and the second hologram layer 22b are layers that impart a hologram pattern to the shaft. The area where the hologram layer is provided can be appropriately set depending on the letters or patterns to be imparted to the shaft, the position where they are to be imparted, etc. 2, the second hologram layer 22b partially overlaps the first hologram layer 22a when viewed from the outside in the radial direction of the shaft, but this is not limited thereto. The second hologram layer 22b may completely overlap the first hologram layer 22a, or may not overlap the first hologram layer 22a. The number of hologram layers is not limited to two, but may be one, or three or more.

[0020] The first hologram layer 22a and the second hologram layer 22b can be formed, for example, by transferring a transfer foil containing a metal foil, or by depositing a hologram material, mask printing it on the required areas, and then removing the unnecessary areas with an alkaline solution. The material for the first hologram layer 22a and the second hologram layer 22b is not particularly limited, and materials such as aluminum, chromium, and tin can be used without any restrictions. These materials may be used alone or in combination of two or more. Among these, aluminum is preferred because it has a mirror finish, high brightness, and good appearance.

[0021] First hologram protective layer 23a is a clear coating layer and is provided in an area that includes first hologram layer 22a. First hologram protective layer 23a may be provided in the same area as first hologram layer 22a, or may be provided in an area that includes or is larger than the area where first hologram layer 22a is provided. Second hologram protective layer 23b is a clear coating layer and is provided in an area that includes second hologram layer 22b. Second hologram protective layer 23b may be provided in the same area as second hologram layer 22b, or may be provided in an area that includes or is larger than the area where second hologram layer 22b is provided.

[0022] 2, both the first hologram protective layer 23a and the second hologram protective layer 23b are provided over the entire outer peripheral surface 10a of the blank tube 10, but this is not limited thereto. In this example, the first hologram protective layer 23a covers the entire first hologram layer 22a, and the second hologram protective layer 23b covers the entire second hologram layer 22b. The second hologram layer 22b does not have to cover the print layer 24.

[0023] In the golf club shaft according to the embodiment, it is preferable that at least one clear coating layer is disposed between the matte layer and the hologram layer, such that first hologram protective layer 23a, which is a clear coating layer, is disposed on first hologram layer 22a, and second hologram protective layer 23b, which is a clear coating layer, is disposed on second hologram layer 22b, thereby protecting the hologram layer. The number of clear coating layers between the matte layer and the hologram layer may be two or more.

[0024] The first hologram protective layer 23a and the second hologram protective layer 23b can be formed by a known coating method such as spray coating or ironing coating. Examples of materials for the first hologram protective layer 23a and the second hologram protective layer 23b include transparent or translucent resin coating materials. Specific examples include urethane resin, acrylic resin, acrylic urethane resin, alkyd resin, and polyester resin. These may be used alone or in combination of two or more. Among these, urethane resin or acrylic urethane resin is preferred because of its excellent adhesiveness, impact resistance, transparency, and abrasiveness.

[0025] The thickness of first hologram protective layer 23a is preferably 1 μm or more, more preferably 2 μm or more, even more preferably 5 μm or more, and particularly preferably 8 μm or more. When first hologram protective layer 23a has a thickness equal to or greater than the lower limit, the effect of protecting first hologram layer 22a is easily obtained. On the other hand, the thickness of the first holographic protective layer 23a is preferably 50 μm or less, more preferably 40 μm or less, even more preferably 20 μm or less, and particularly preferably 10 μm or less. If the thickness of the first holographic protective layer 23a is equal to or less than the upper limit, the first holographic protective layer 23a is less likely to peel off, improving the quality of the shaft. The above-mentioned lower limit and upper limit of the thickness of the first hologram protective layer 23a can be combined arbitrarily. The preferred range of the thickness of the second hologram protective layer 23b is the same as the preferred range of the thickness of the first hologram protective layer 23a.

[0026] The printing layer 24 is a layer for providing character information indicating attributes of the shaft, patterns such as a logo, and the like. The printed layer 24 can be formed, for example, by one or more types of colored printing inks. Specific examples include inks in which a color pigment is blended into a vehicle such as saturated polyester resin, alkyd resin, polyurethane resin, acrylic resin, vinyl chloride resin, cellulose resin, or epoxy resin. The printing method is not particularly limited, and may be, for example, silk printing.

[0027] A color coating layer 25 is provided on a portion of the surface of second hologram protective layer 23b, covering the entire first hologram layer 22a and second hologram layer 22b when viewed from the radial outside of the shaft, and a color protective layer 26 covering the entire color coating layer 25 is provided over the entire outer circumferential surface 10a of the blank tube 10. As such, in the golf club shaft according to the embodiment, it is preferable that at least one color coating layer is disposed between the hologram layer and the matte layer. By overlaying a color coating layer on the hologram layer, a desired color can be imparted to the hologram pattern, which has excellent brilliance, further improving the design. There may be two or more clear coating layers between the hologram layer and the color coating layer.

[0028] 2, the color coating layer 25 is provided so as to entirely cover the first hologram layer 22a and the second hologram layer 22b when viewed from the radially outer side of the shaft, but this is not limited thereto. The color coating layer may also overlap only a portion of the hologram layer. The golf club shaft according to the embodiment does not necessarily have to be provided with a color coating layer.

[0029] The color coating layer 25 can be formed by a method selected from spray coating and ironing coating, with high-pressure spray coating being particularly preferred since it allows for the color coating layer to be formed quickly and evenly. Examples of materials for the color coating layer 25 include transparent or translucent colored paints. Specific examples include paints containing color pigments blended with urethane resin, acrylic resin, acrylic urethane resin, alkyd resin, polyester resin, etc. These may be used alone or in combination of two or more.

[0030] 2, where second hologram protective layer 23b is provided between color coating layer 25 and second hologram layer 22b, it is preferable that at least one clear coating layer be disposed between the color coating layer and the hologram layer in the golf club shaft according to the embodiment. This prevents peeling of the hologram layer even if the color coating layer is removed due to a failure in the color coating, thereby minimizing a decrease in productivity.

[0031] The color protection layer is a clear coating layer that is provided in the area that includes the color coating layer. By providing the color protection layer between the matte layer and the color coating layer, the color coating layer is protected from corrosion, improving the appearance of the shaft. The color protective layer may be provided in the same area as the area where the color coating layer is provided, or may be provided in an area including the area where the color coating layer is provided but larger than that. 2, the color protective layer 26 is provided over the entire outer circumferential surface 10a of the mother pipe 10, but is not limited thereto. The color protective layer 26 in this example covers the entire color coating layer 25.

[0032] The color protective layer 26 can be formed by a known coating method such as spray coating or ironing coating. The color protection layer 26 may be made of the same transparent or semi-transparent resin coating material as the hologram protection layer.

[0033] The thickness of the color protective layer 26 is preferably 1 μm or more, more preferably 2 μm or more, even more preferably 5 μm or more, and particularly preferably 8 μm or more. When the color protective layer 26 has a thickness equal to or greater than the lower limit, the effect of protecting the color coating layer 25 is easily obtained. On the other hand, the thickness of the color protective layer 26 is preferably 50 μm or less, more preferably 40 μm or less, even more preferably 20 μm or less, and particularly preferably 10 μm or less. If the color protective layer 26 is not thicker than the upper limit, the color protective layer 26 is less likely to peel off, improving the quality of the shaft. The above-mentioned lower and upper limits of the thickness of the color protection layer 26 can be arbitrarily combined.

[0034] On the surface of the color protection layer 26, a matte layer 27 is provided over the entire outer circumferential surface 10a of the blank tube 10, covering the entire first hologram layer 22a and the second hologram layer 22b.

[0035] The matte layer is a layer that diffuses light and suppresses reflection by forming fine irregularities on the surface, for example. The matte layer is provided in an area including the hologram layer. The matte layer may be provided in the same area as the area where the hologram layer is provided, or may be provided in an area wider than the area where the hologram layer is provided. 2, the matte layer 27 is provided over the entire outer circumferential surface 10a of the blank tube 10, but is not limited thereto. In this example, the matte layer 27 entirely covers the first holographic protective layer 23a and the second holographic protective layer 23b.

[0036] By providing a matte layer in the area containing the hologram layer, it is possible to suppress reflection from the hologram layer while realizing the excellent design provided by the formation of the hologram layer. As a result, even with an adjustable golf club, regardless of the lie angle or loft angle, the golfer's concentration when holding the club and taking stance is prevented from being disturbed by light reflected from the hologram layer.

[0037] The matte layer 27 can be formed by a known coating method such as spray coating or ironing coating. Paints using urethane resin, acrylic resin, acrylic urethane resin, alkyd resin, or polyester resin can be used as the material for the mat layer 27. These may be used alone or in combination of two or more.

[0038] The thickness of the mat layer 27 is preferably 1 μm or more, more preferably 5 μm or more, even more preferably 8 μm or more, and particularly preferably 9 μm or more. If the thickness of the mat layer 27 is equal to or greater than the lower limit, light reflection is sufficiently suppressed, and the golfer's concentration is less likely to be disturbed. On the other hand, the thickness of the matte layer 27 is preferably 50 μm or less, more preferably 40 μm or less, even more preferably 30 μm or less, and particularly preferably 20 μm or less. If the thickness of the matte layer 27 is less than the upper limit, the matte layer 27 is less likely to peel off, which is preferable. The above-mentioned lower limit and upper limit of the thickness of the mat layer 27 can be combined arbitrarily.

[0039] In the golf club shaft according to the embodiment, in addition to the above-mentioned layers, layers other than those may be further provided. The other layer may be, for example, a gloss layer. For example, the gloss layer may be offset so as to overlap only partially with the matte layer when viewed from the radially outer side of the shaft, or the gloss layer may be partially provided within a region where the matte layer is provided, or the gloss layer may be provided in a wider region that includes the region where the matte layer is provided.

[0040] In a preferred example of providing a gloss layer, the gloss layer is provided so as to cover the entire hologram layer when viewed from the outside in the radial direction of the shaft. For example, a gloss layer is provided on the surface of a matte layer that covers the entire outer peripheral surface of the blank tube so as to cover the entire hologram layer. Covering the entire hologram layer with the gloss layer adds gloss to the hologram pattern, further improving the design. In general, the outer diameter of a golf club shaft in a plane perpendicular to the tube axis direction changes from one end to the other in the tube axis direction. As an example, the gloss layer can be provided on the outer peripheral surface of the mother tube in a region extending from the large-diameter end to a position 70% of the way in the tube axis direction.

[0041] The gloss layer can be formed by a method selected from spray coating and ironing. The gloss layer may be made of a paint containing a urethane resin, an acrylic resin, an acrylic urethane resin, an alkyd resin, or a polyester resin. These may be used alone or in combination of two or more.

[0042] The golf club shaft according to the embodiment is not limited to the golf club shaft 1 described above. For example, the golf club shaft 2 may be the one shown in Fig. 3. The golf club shaft 2 has the same configuration as the golf club shaft 1, except that the color coating layer 25 and the color protective layer 26 are not provided, and a matte layer 27 that covers the first hologram layer 22a and the second hologram layer 22b is provided on the surface of the second hologram protective layer 23b over the entire outer peripheral surface 10a of the blank tube 10.

[0043] In the golf club shaft 2, excellent design is achieved by forming the first hologram layer 22a and the second hologram layer 22b, while light reflection can be suppressed by the matte layer 27. Therefore, even with an adjustable golf club, the concentration of a golfer holding the club and setting up is prevented from being disturbed by light reflected by the hologram layer.

[0044] [Manufacturing method of golf club shafts] A method for manufacturing a golf club shaft according to an embodiment includes providing a hologram layer on at least a portion of the outer circumferential surface of a blank tube, and providing a mat layer in an area that includes the hologram layer. Hereinafter, a method for manufacturing the golf club shaft 1 described above will be described as an example of a method for manufacturing the golf club shaft according to the embodiment.

[0045] The method for manufacturing the golf club shaft 1 includes the following steps (i) to (v). (i) An undercoat layer 21a, a base color layer 21b, and a clear coating layer 21c are provided in this order on the outer circumferential surface 10a of the mother tube 10. (ii) A first hologram layer 22a is provided on the clear coating layer 21c, and a further first hologram layer 22a is provided to cover the first hologram layer 22a. (iii) A second hologram layer 22b and a print layer 24 are provided on the surface of the first hologram protection layer 23a, and a second hologram protection layer 23b is further provided to cover them. (iv) A color coating layer 25 is provided on the surface of the second hologram protection layer 23b, and a color protection layer 26 is further provided to cover the color coating layer 25. (v) A matte layer 27 is provided on the surface of the color protective layer 26.

[0046] The method for manufacturing a golf shaft according to the embodiment may include manufacturing a blank tube using prepreg. For example, a mother pipe can be produced by a sheet wrapping method in which a plurality of sheets of prepreg, such as UD prepreg, are wrapped around a mandrel, heated and molded, and then the mandrel is removed. Alternatively, a mother pipe may be produced by other methods, such as an internal pressure molding method or a filament winding method.

[0047] In step (i), the primer layer 21a is formed by applying a coating material that has high adhesion to the mother tube 10 and the base color layer 21b to the entire outer peripheral surface 10a of the mother tube 10. Then, a colored paint such as black paint is applied to the entire surface of the primer layer 21a to form the base color layer 21b, and then a transparent or translucent resin coating material is applied to the entire surface of the base color layer 21b to form the clear coating layer 21c. The method for applying the undercoat layer 21a, the base color layer 21b, and the clear coating layer 21c is not particularly limited, and examples thereof include known application methods such as spray coating and ironing coating.

[0048] In (ii), first hologram layer 22a is formed on the surface of clear coating layer 21c, and then a transparent or translucent resin coating material is applied to form first hologram protection layer 23a. First hologram protection layer 23a, which is a clear coating layer, is provided in an area that includes first hologram layer 22a.

[0049] Methods for forming the first hologram layer 22a include, for example, transferring a transfer foil containing a metal foil, and depositing a hologram material, mask printing it on the required areas, and then removing the unnecessary areas with an alkaline solution. The first hologram protection layer 23a can be formed by known coating methods such as spray coating and ironing coating.

[0050] In (iii), second hologram layer 22b is formed on the surface of first hologram protective layer 23a, and one or more types of colored printing ink are printed to form printed layer 24. After that, a transparent or translucent resin coating material is applied to form second hologram protective layer 23b. Second hologram protective layer 23b, which is a clear coating layer, is provided in the area that includes second hologram layer 22b. In the example shown in FIG. 2, the second hologram protective layer 23b is provided so as to cover the printed layer 24, but this is not limited thereto, and the second hologram protective layer 23b may be provided so as not to cover the printed layer 24.

[0051] The second hologram layer 22b can be formed, for example, by the same method as that used to form the first hologram layer 22a. The second hologram protective layer 23b can be formed, for example, by the same method as that used to form the first hologram protective layer 23a. The printing layer 24 can be formed, for example, by silk printing.

[0052] In the manufacturing method according to the embodiment, it is preferable to place at least one clear coating layer between the color coating layer and the hologram layer, which prevents the hologram layer from peeling off even if the color coating layer is removed due to a failure in the color coating, thereby suppressing a decrease in productivity.

[0053] In (iv), a transparent or semi-transparent colored paint is applied to the surface of second hologram protective layer 23b to form color coating layer 25, and a transparent or semi-transparent resin coating material is applied to the area including color coating layer 25 to form color protective layer 26. Color protective layer 26, which is a clear coating layer, is provided in the area including color coating layer 25.

[0054] As a method for forming the color coating layer 25, spray coating and ironing coating are preferred, and high-pressure spray coating is particularly preferred because it allows for the color coating layer to be formed quickly and evenly. The color protective layer 26 can be formed by known coating methods such as spray coating and ironing coating.

[0055] In (v), a matte layer 27 is formed on the surface of the color protective layer 26 by applying a paint containing urethane resin, acrylic resin, acrylic urethane resin, alkyd resin, or polyester resin. The matte layer is provided in an area that includes the hologram layer. The matte layer may be provided in the same area as the area where the hologram layer is provided, or may be provided in an area that includes or is larger than the area where the hologram layer is provided. By forming the matte layer, it is possible to suppress reflection from the hologram layer while realizing the excellent design provided by the hologram layer. Therefore, even with an adjustable golf club, regardless of the lie angle or loft angle, the golfer's concentration when holding the club and taking stance is prevented from being disturbed by light reflected from the hologram layer.

[0056] The matte layer 27 can be formed by known coating methods such as spray coating and ironing coating.

[0057] The present invention is not limited to the above-described embodiment. Within the scope of the spirit of the present invention, the components in the above-described embodiment may be replaced with well-known components, and the above-described modifications may be combined as appropriate. [Explanation of symbols]

[0058] 1, 2 Golf club shaft 10. Raw tube 21a Primer layer 21b base color layer 21c Clear coating layer 22a First hologram layer 22b Second hologram layer 23a First hologram protection layer 23b Second hologram protection layer 24 Printing layer 25 color paint layers 26 Color protection layer 27 Matte layer

Claims

1. a hologram layer and a matte layer are provided on the outer peripheral surface of the base tube; A golf club shaft, wherein the matte layer is provided in an area including the hologram layer.

2. The golf club shaft of claim 1 , wherein at least one clear coating layer is disposed between the matte layer and the holographic layer.

3. 3. The golf club shaft according to claim 1, wherein at least one color coating layer is disposed between the hologram layer and the matte layer.

4. 4. The golf club shaft according to claim 3, wherein at least one clear coating layer is disposed between the color coating layer and the hologram layer.

5. A method of manufacturing a golf club shaft for obtaining a shaft for use in a golf club, comprising: providing a hologram layer on at least a portion of the outer circumferential surface of the blank tube; and providing a matte layer in the area including the hologram layer; A method for manufacturing a golf club shaft, comprising:

6. The method for manufacturing a golf club shaft according to claim 5, wherein a clear coating layer is provided on the area including the hologram layer.

7. 7. The method for manufacturing a golf club shaft according to claim 5, wherein a color coating layer is provided in the area including the hologram layer.

8. The method for manufacturing a golf club shaft according to claim 7, wherein at least one clear coating layer is disposed between the color coating layer and the hologram layer.

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