Method for coating a raw tube, method for manufacturing a shaft, and shaft for a golf club

Abstract

To provide a technique for correcting an error of color coating, in production of a golf club shaft which has excellent brilliant property and design property and has a color layer on a hologram layer, for suppressing reduction of productivity.SOLUTION: A first hologram layer 22a and a second hologram layer 22b are provided on at least a part of a peripheral face 1a of an element tube 1, and a first hologram protective layer 23a and a second hologram protective layer 23b are provided in a region including these hologram layers; there is provided a color layer 24 in a region including at least a part of the hologram protective layers and a part of the hologram layers, in an element tube coating method for acquiring a shaft used for a golf club. There is also provided a production method of the shaft used for the golf club.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a method for coating a blank tube to obtain a shaft for a golf club, and a method for manufacturing a shaft for a golf club. [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 viewpoints of luster, design, and the like. For example, the surface of a hologram layer is covered with a transparent protective layer, and a clear layer is then provided to improve the durability of the decoration (Patent Document 1). Also, a hologram layer is placed on the outside of a sporting goods, and a color layer is provided on top of it, thereby concealing the color of the hologram layer and suppressing color loss of the hologram layer (Patent Document 2). [Prior art documents] [Patent documents]

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

[0004] The present inventors have conducted detailed studies on the case where a color layer is provided directly on a hologram layer, and have found that when the color coating on the surface of the hologram layer fails and an attempt is made to remove the color layer, the hologram layer also peels off at the same time, making it impossible to correct the color coating and resulting in poor productivity.

[0005] The main object of the present invention is to provide a technology that can easily correct any mistakes in color painting during the manufacture of golf club shafts having excellent luster and design properties by providing a color layer on a hologram layer, thereby suppressing any decline in productivity. [Means for solving the problem]

[0006] The present invention may include the following configurations. [1] A method for coating a blank tube to obtain a shaft for a golf club, comprising the steps of: providing a hologram layer on at least a portion of an outer circumferential surface of the blank tube; providing a hologram protection layer in an area including the hologram layer; and providing a color layer in an area including at least a portion of the hologram protection layer and at least a portion of the hologram layer; A method for coating a bare pipe, comprising: [2] The method for coating a blank pipe according to [1], wherein the color layer is provided by a method selected from spray coating and ironing coating. [3] The method for coating a blank pipe described in [1], in which the color layer is provided by high-pressure spray coating. [4] The method for coating a blank pipe according to any one of [1] to [3], further comprising providing a matte layer in an area including the color layer. [5] The method for coating a mother tube according to [4], wherein the matte layer is provided over the entire outer peripheral surface of the mother tube. [6] The method for coating a blank pipe according to [4] or [5], further comprising providing a color protective layer between the color layer and the matte layer so as to encompass the color layer. [7] The method for coating a blank pipe according to any one of [4] to [6], further comprising providing a gloss layer in an area including at least a portion of the matte layer. [8] The method for coating a blank pipe according to [7], in which the gloss layer is provided by a method selected from spray coating and ironing coating. [9] The method for coating a blank tube according to [7] or [8], wherein the hologram layer is entirely covered with the gloss layer when viewed from the radial outside of the blank tube.

[10] The method for coating a mother tube according to any one of [7] to [9], wherein the gloss layer is provided on an outer peripheral surface of the mother tube over a region extending from a large-diameter end portion to 70% of the region in an axial direction of the mother tube.

[11] A method for manufacturing a shaft for use in a golf club, comprising the steps of: providing a hologram layer on at least a portion of an outer circumferential surface of the blank tube; providing a hologram protection layer in an area including the hologram layer; and providing a color layer in an area including at least a portion of the hologram protection layer and at least a portion of the hologram layer; A method for manufacturing a shaft, comprising:

[12] A method for manufacturing a shaft as described in

[11] , in which the color layer is provided by a method selected from spray painting and ironing painting.

[13] A method for manufacturing a shaft as described in

[11] , in which the color layer is provided by high-pressure spray painting.

[14] A method for manufacturing a shaft according to any one of

[11] to

[13] , wherein a matte layer is provided in the area including the color layer.

[15] A method for manufacturing a shaft as described in

[14] , in which the matte layer is provided over the entire outer peripheral surface of the mother tube.

[16] A method for manufacturing a shaft as described in

[14] or

[15] , further comprising providing a color protection layer between the color layer and the matte layer so as to encompass the color layer.

[17] A method for manufacturing a shaft according to any one of

[14] to

[16] , further comprising providing a gloss layer in an area including at least a portion of the matte layer.

[18] A method for manufacturing a shaft as described in

[17] , in which the gloss layer is provided by a method selected from spray painting and ironing painting.

[19] A method for manufacturing a shaft as described in

[17] or

[18] , wherein, when viewed from the radial outside of the base tube, the hologram layer is entirely covered by the gloss layer.

[20] The method for manufacturing a shaft according to any one of

[17] to

[19] , wherein the gloss layer is provided on an outer peripheral surface of the mother tube over a region extending from the large diameter end to 70% of the region in the axial direction of the mother tube. Effect of the Invention

[0007] According to the embodiment, a technology is provided that makes it easy to correct any mistakes in color painting during the manufacture of golf club shafts that have excellent luster and design by providing a color layer on a hologram layer, thereby suppressing any decline in productivity. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram showing an example of a raw tube used in a method according to an embodiment. [Diagram 2] FIG. 2 is a schematic diagram showing an example of a layer structure formed by the method according to the embodiment. [Diagram 3] FIG. 3 is a schematic diagram showing an example of a layer structure formed by the method according to the embodiment. [Figure 4] FIG. 4 is a schematic diagram showing an example of a layer structure formed by the method according to the embodiment. [Diagram 5] FIG. 5 is a schematic diagram showing an example of a layer structure formed by the method according to the embodiment. [Figure 6] FIG. 6 is a schematic diagram showing an example of a layer structure formed by the method according to the embodiment. [Figure 7] FIG. 7 is a schematic diagram showing an example of a layer structure formed by the method according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Painting method for bare pipes] A method according to an embodiment is a method for coating a blank tube to obtain a shaft for use in a golf club, and includes providing a holographic layer on at least a portion of the outer peripheral surface of the blank tube, providing a holographic protective layer in an area that includes the holographic layer, and providing a color layer in an area that includes at least a portion of the holographic protective layer and also includes at least a portion of the holographic layer.

[0010] In this specification and the claims, "providing layer B in a region including layer A" means providing layer B so as to cover the entirety of layer A as viewed from the radial outside of the mother tube. Specifically, this includes a configuration in which layer B is provided overlapping the same region as the region where layer A is provided, as well as a configuration in which layer B is provided in a wider region including the region where layer A is provided, as viewed from the radial outside of the mother tube. Furthermore, "providing layer B in a region including at least a part of layer A" means that, when viewed from the radial outside of the mother tube, layer A and layer B at least partially overlap. Specifically, this includes a configuration in which layer A and layer B are shifted so as to overlap only partially when viewed from the radial outside of the mother tube, a configuration in which layer B is partially provided within a part of the region in which layer A is provided, and a configuration in which layer B is provided in a region wider than the region in which layer A is provided.

[0011] (Plain tube) The base tube 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 blank pipe is 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 cured to form a shape, and then the mandrel is removed.

[0012] (Surface preparation) Before providing a hologram layer, an undercoat layer, a base color layer, etc. may be provided on the outer peripheral surface of the raw tube. For example, the undercoat layer and the base color layer may be provided in that order from the outer peripheral surface of the raw tube, and a clear layer may also be provided in order to improve adhesion with other layers. The undercoat layer, base color layer, clear layer, etc. can be formed by a known coating method such as spray coating, ironing coating, etc. The undercoat layer, base color layer, and clear layer do not necessarily have to be provided on the blank tube side of the hologram layer, but it is preferable to provide at least one of them.

[0013] The undercoat layer is formed using a coating material that has high adhesion to the base pipe and the layer to be formed on the undercoat layer. As such a coating material, for example, a coating material used as a base when applying a coating treatment to the surface of a resin member can be used without any restrictions, for example, "9-7010EP Shigoki Primer Dark Gray (registered trademark: manufactured by Mikuni Paint Co., Ltd.)" can be used. The colored paint for forming the base color layer includes, but is not limited to, a black paint.

[0014] (Formation of holographic layer) In the method according to the embodiment, a hologram layer is provided on at least a portion of the outer circumferential surface of the blank tube. However, "providing a hologram layer on the outer peripheral surface of the mother tube" includes providing a hologram layer directly on the outer peripheral surface of the mother tube, as well as providing a hologram layer between the outer peripheral surface of the mother tube and another layer. In a preferred embodiment, an undercoat layer, a base color layer, a clear layer, etc. are provided on the outer circumferential surface of the raw tube, and then a hologram layer is provided on at least a part of the surface of these layers.

[0015] The hologram layer is a layer that imparts a hologram pattern to the shaft. The area where the hologram layer is provided can be appropriately set depending on the characters or patterns to be imparted to the shaft, the position where they are imparted, and the like. The hologram layer may be provided in only one layer, or in two or more layers that are at least partially overlapping when viewed from the outside in the radial direction of the blank tube, or may be disposed in a plurality of locations so as not to overlap.

[0016] The hologram layer can be formed, for example, by a method of transferring a transfer foil containing a metal foil, or by a method of depositing a hologram material, mask printing the required areas, and then removing the unnecessary areas with an alkaline solution. The material of the hologram layer is not particularly limited, and for example, materials such as aluminum, chromium, and tin can be used without any restrictions. These 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.

[0017] (Formation of hologram protection layer) After the hologram layer is provided, a hologram protective layer is provided in the area including the hologram layer, for example, by overlaying the hologram protective layer in the same area as the hologram layer, or by providing a hologram protective layer in an area larger than the area including the hologram layer. In a preferred embodiment, after the hologram layer is provided, a hologram protective layer is provided over the entire outer circumferential surface of the blank tube so as to cover the entire hologram layer.

[0018] When a color layer is provided directly on the surface of a hologram layer as in Patent Document 2, when the color coating fails and an attempt is made to remove the color layer, the hologram layer also peels off at the same time, making it impossible to correct the color coating and reducing productivity. In contrast, if the hologram layer is covered with a hologram protective layer and then a color layer is provided on the hologram protective layer, peeling of the hologram layer can be prevented even when the color layer is removed due to a failure in color coating, and a decrease in productivity can be suppressed.

[0019] The hologram protective layer can be formed by a known coating method such as spray coating or ironing coating. The material for the hologram protective layer may be, for example, a transparent or semi-transparent resin coating material. Specifically, for example, urethane resin, acrylic resin, acrylic urethane resin, alkyd resin, polyester resin, etc. can be mentioned. These may be used alone or in combination of two or more. Among these, urethane resin or acrylic urethane resin is preferable because of excellent adhesion, impact resistance, transparency, polishability, etc.

[0020] The thickness of the hologram protective layer is preferably 1 μm or more, more preferably 2 μm or more, further preferably 5 μm or more, and particularly preferably 8 μm or more. When the hologram protective layer has a thickness of the lower limit or more, the effect of protecting the hologram layer is easily obtained. On the other hand, the thickness of the holographic protective layer is preferably 50 μm or less, more preferably 40 μm or less, further preferably 20 μm or less, and particularly preferably 10 μm or less. If the holographic protective layer is not thicker than the upper limit, the holographic protective layer 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 hologram protection layer can be combined arbitrarily.

[0021] (Formation of color layer) The color layer is provided in an area including at least a part of the hologram protection layer and at least a part of the hologram layer. For example, when a hologram protective layer is provided over the entire outer peripheral surface of the bare tube, a color layer may be provided on the surface of the hologram protective layer, shifted so that it overlaps only partially with the hologram layer when viewed from the outside in the radial direction of the bare tube, or the color layer may be provided partially within a part of the area where the hologram layer is provided, or the color layer may be provided over an area larger than the area where the hologram layer is provided and includes the area where the hologram layer is provided.

[0022] By overlaying a color layer on at least a part of the hologram layer, a desired color can be imparted to the hologram pattern with excellent brilliance, further improving the design. In addition, since a hologram protective layer is present between the hologram layer and the color layer in the overlapping portion as viewed from the radial direction of the blank tube, even if the color coating is mistakenly applied and the color layer needs to be removed, the hologram layer will not peel off, making it easy to make repairs.

[0023] The method for providing the color layer is preferably selected from spray coating and ironing coating, and high-pressure spray coating is particularly preferred because it can form a color layer quickly and evenly.

[0024] The material of the color layer may be, for example, a transparent or semi-transparent colored paint. Specifically, examples of the paint include paints in which color pigments are 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 kinds.

[0025] (Formation of other layers) In addition to the hologram layer, the hologram protection layer and the color layer, other layers may be provided. For example, a color protective layer may be provided in a region including a color layer, for example, by providing a color protective layer over the same region as the region where the color layer is provided, or by providing a color protective layer over a wider region including the region where the color layer is provided. In a preferred embodiment, after the color layer is provided, a color protective layer is provided over the entire outer circumferential surface of the mother tube so as to cover the entire color layer.

[0026] The color protective layer can be formed by a known coating method such as spray coating or ironing coating. The color protective layer may be made of the same transparent or semi-transparent resin coating material as the hologram protective layer.

[0027] The thickness of the color protective layer is preferably 1 μm or more, more preferably 2 μm or more, further preferably 5 μm or more, and particularly preferably 8 μm or more. When the color protective layer has a thickness of the above-mentioned lower limit or more, the effect of protecting the color layer is easily obtained. On the other hand, the thickness of the color protective layer 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 is less likely to peel off, the quality of the shaft is improved. The above-mentioned lower and upper limits of the thickness of the color protective layer can be combined arbitrarily.

[0028] As a gloss adjusting layer, a matte layer or a gloss layer may be provided. As an example, a matte layer can be provided in an area including a color layer. For example, a matte layer can be provided over the same area as the color layer, or a matte layer can be provided over an area that includes the color layer and is larger than the area where the color layer is provided. In a preferred embodiment, after the collar layer is provided, a collar protective layer and a matte layer are sequentially provided over the entire outer circumferential surface of the blank tube. When the matte layer is provided, the collar protective layer is provided between the matte layer and the collar layer, which prevents the collar layer from being eroded, improving the appearance of the shaft.

[0029] The matte layer can be formed by a known coating method such as spray coating or ironing coating. The matte 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.

[0030] In yet another example, a gloss layer may be provided in an area that includes at least a portion of the matte layer. For example, the gloss layer may be offset so as to overlap only partially with the matte layer when viewed from the radial outside of the mother tube, or the gloss layer may be partially provided within a portion of the area where the matte layer is provided, or the gloss layer may be provided in an area larger than the area where the matte layer is provided and includes the area where the matte layer is provided.

[0031] In a preferred embodiment, the hologram layer is entirely covered with a gloss layer when viewed from the outside in the radial direction of the mother tube. For example, a gloss layer is provided on the surface of a matte layer that covers the entire outer circumferential surface of the mother tube so as to entirely cover the hologram layer. By entirely covering the hologram layer with a gloss layer, gloss is added 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 end in the tube axis direction. As an example, the gloss layer can be provided on the outer peripheral surface of the blank tube in a region extending from the large-diameter end to 70% of the tube axis direction.

[0032] The method for providing the gloss layer is preferably a method selected from spray coating and ironing coating. The material for the gloss layer may be a paint using 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.

[0033] A printing layer may be provided to impart character information indicating attributes of the shaft, a pattern such as a logo, etc. For example, a printing layer may be provided on the surface of the hologram protective layer or the color protective layer. The printing layer is not particularly limited, and can be formed by one or more kinds of color printing inks. Specifically, for example, the printing layer can be formed by a printing method using an ink containing a color pigment mixed in a vehicle such as a saturated polyester resin, an alkyd resin, a polyurethane resin, an acrylic resin, a vinyl chloride resin, a cellulose resin, or an epoxy resin. The printing method is not particularly limited, and may be, for example, silk printing.

[0034] (Painting example) Hereinafter, specific examples of the coating method according to the embodiment will be described with reference to the drawings. In addition, the dimensions of the figures illustrated in the following description are merely examples, and the present invention is not necessarily limited to them, and can be implemented with appropriate modifications within the scope that does not change the gist of the present invention.

[0035] Fig. 1 is a schematic diagram showing a mother tube 1 used in a method according to an embodiment of the present invention, and Fig. 2 is a cross-sectional view showing a schematic configuration of layers to be coated on an outer circumferential surface 1a of the mother tube 1. As shown in Fig. 1, the outer diameter of a blank tube 1 for obtaining a shaft for a golf club changes from one end to the other end in the tube axis direction in a plane perpendicular to the tube axis direction. The blank tube 1 may have both a tapered portion and a portion with a constant diameter in the tube axis direction. Hereinafter, the end with the smaller outer diameter is referred to as the small diameter end portion 11, and the end with the larger outer diameter is referred to as the large diameter end portion 12.

[0036] In the example shown in FIG. 2, an undercoat layer 21a, a base color layer 21b, and a clear layer 21c are provided in this order on the entire outer circumferential surface 1a of the blank tube 1 by spray coating, ironing coating, or the like. Next, a first hologram layer 22a is provided on a portion of the surface of the clear layer 21c by a method such as transferring a transfer foil. Furthermore, a first hologram protective layer 23a is provided over the entire outer peripheral surface 1a of the blank tube 1, covering the entire first hologram layer 22a, by spray painting, ironing coating, etc. These operations are then repeated to provide a second hologram layer 22b on a portion of the surface of the first hologram protective layer 23a, and thereafter a second hologram protective layer 23b is provided over the entire outer peripheral surface 1a of the blank tube 1, covering the entire second hologram layer 22b.

[0037] Next, a color layer 24 is provided on part of the surface of the second hologram protective layer 23b by spray painting, ironing coating, etc. so as to cover the entire first hologram layer 22a and the second hologram layer 22b, and then a color protective layer 25 is provided over the entire outer surface 1a of the base tube 1, covering the entire color layer 24.

[0038] Next, a printed layer 26 for providing text information, a logo, and the like is provided by, for example, silk printing on the surface of the color protective layer 25. Thereafter, a matte layer 27 is provided over the entire outer circumferential surface 1a of the blank tube 1 by spray painting, ironing coating, or the like, and further a gloss layer 28 is provided on part of the surface thereof. In this example, a gloss layer 28 is provided on the outer peripheral surface 1a of the blank tube 1 in an area extending from the large diameter end 12 to 70% of the area in the tube axial direction, and it is preferable that the first hologram layer 22a, the second hologram layer 22b and the color layer 24 are also provided within this area.

[0039] (Other painting examples) The method for coating a blank pipe of the present invention is not limited to the above-mentioned method. Another example will be described below with reference to Figures 3 to 7. The same parts in Figures 3 to 7 are given the same reference numerals and the description will be omitted. It is sufficient that the color layer covers at least a portion of the hologram layer when viewed from the outside in the radial direction of the blank tube, and for example, as in the example shown in Fig. 3, a color layer 24 may be provided that extends to an area where the first hologram layer 22a and the second hologram layer 22b are not provided. As in the example shown in Fig. 7, so long as a portion of the hologram layer is covered by color layer 24 when viewed from the outside in the radial direction of blank tube 1, the remainder of the hologram layer does not need to be covered by color layer 24.

[0040] The gloss layer need only cover the hologram layer when viewed from the radial outside of the bare tube, and for example, as shown in the example of Figure 4, a gloss layer 28 may be provided that extends into areas where the first hologram layer 22a and the second hologram layer 22b are not provided. The hologram layer does not have to be two-layered. For example, as in the example shown in FIG. 5, the second hologram layer 22b and the second hologram protective layer 23b do not have to be provided. The layer configuration on the bare tube side of the hologram layer is not limited either. For example, only one or two layers selected from an undercoat layer, a base color layer and a clear layer may be provided on the bare tube side of the hologram layer. As in the example shown in FIG. 6, the printed layer does not have to be provided.

[0041] [Shaft manufacturing method] A method according to another embodiment is a method for manufacturing a shaft for use in a golf club, comprising providing a holographic layer on at least a portion of the outer peripheral surface of a raw tube, providing a holographic protective layer in an area which includes the holographic layer, and providing a color layer in an area which includes at least a portion of the holographic protective layer and also includes at least a portion of the holographic layer. The hologram layer, hologram protective layer and color layer are provided on the outer circumferential surface of the mother tube, and other layers are provided as required in the same manner as in the above-mentioned method for coating the mother tube.

[0042] A method for manufacturing a shaft according to an embodiment may include a step of manufacturing a blank tube using a prepreg. For example, a blank 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 blank pipe may be produced by other methods such as an internal pressure molding method or a filament winding method.

[0043] 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 the thermosetting resin include epoxy resins such as bisphenol A type epoxy resin and bisphenol F type epoxy resin. The matrix resin may be used alone or in combination of two or more types.

[0044] The present invention is not limited to the above-described embodiment. Within the scope of the present invention, the components in the above-described embodiment may be replaced with known components, and the above-described modified examples may be combined as appropriate. [Explanation of symbols]

[0045] 1. Blank tube 1a Outer surface 21a Undercoat layer 21b Base color layer 21c Clear layer 22a First hologram layer 22b Second hologram layer 23a First hologram protection layer 23b Second hologram protection layer 24 Color Layers 25 Color protection layer 26 Printing layer 27 Matte layer 28 Gross Layer

Claims

1. A method for coating a blank tube to obtain a shaft for a golf club, comprising the steps of: providing a hologram layer on at least a part of the outer circumferential surface of the blank tube; providing a hologram protection layer in an area containing the hologram layer; and providing a color layer in an area including at least a part of the hologram protection layer and at least a part of the hologram layer; A method for coating a raw pipe, comprising:

2. 2. The method for coating a blank pipe according to claim 1, wherein the color layer is applied by a method selected from spray coating and ironing coating.

3. 2. The method for coating a blank pipe according to claim 1, wherein the color layer is applied by high-pressure spray coating.

4. The method for coating a raw pipe according to any one of claims 1 to 3, further comprising providing a matte layer in an area including the color layer.

5. 5. The method for coating a mother pipe according to claim 4, wherein the matte layer is provided over the entire outer peripheral surface of the mother pipe.

6. 5. The method for coating a blank pipe according to claim 4, further comprising providing a color protective layer between said color layer and said matte layer so as to encompass said color layer.

7. The method for coating a mother pipe according to claim 4, further comprising providing a gloss layer in an area including at least a portion of the matte layer.

8. 8. The method for coating a blank pipe according to claim 7, wherein the gloss layer is formed by a method selected from spray coating and ironing coating.

9. 8. The method for coating a mother pipe according to claim 7, wherein the hologram layer is entirely covered with the gloss layer when viewed from the outside in the radial direction of the mother pipe.

10. 8. The method for coating a mother pipe according to claim 7, wherein the gloss layer is provided on an area of ​​the outer peripheral surface of the mother pipe from the large-diameter end portion to 70% of the area in the axial direction of the pipe.

11. A method of manufacturing a shaft for use in a golf club, comprising: providing a hologram layer on at least a part of the outer circumferential surface of the blank tube; providing a hologram protection layer in an area containing the hologram layer; and providing a color layer in an area including at least a part of the hologram protection layer and at least a part of the hologram layer; A method for manufacturing a shaft, comprising:

12. The method for manufacturing a shaft according to claim 11, wherein the color layer is applied by a method selected from spray coating and ironing coating.

13. The method for manufacturing a shaft according to claim 11, wherein the color layer is applied by high-pressure spray painting.

14. The method for manufacturing a shaft according to any one of claims 11 to 13, further comprising providing a matte layer in the area including the color layer.

15. The method for manufacturing a shaft according to claim 14, wherein the mat layer is provided over the entire outer peripheral surface of the mother tube.

16. The method for manufacturing a shaft according to claim 14, further comprising providing a color protection layer between the color layer and the mat layer so as to encompass the color layer.

17. The method for manufacturing a shaft according to claim 14, further comprising providing a gloss layer in an area including at least a portion of the matte layer.

18. The method for manufacturing a shaft according to claim 17, wherein the gloss layer is applied by a method selected from spray coating and ironing coating.

19. The method for manufacturing a shaft according to claim 17, wherein the hologram layer is entirely covered with the gloss layer when viewed from the outside in the radial direction of the mother tube.

20. The method for manufacturing a shaft according to claim 17, wherein the gloss layer is provided on an area of ​​the outer peripheral surface of the mother tube from a large diameter end portion to 70% of the area in the tube axial direction.

21. A shaft for a golf club, comprising: a hologram layer provided on at least a portion of the outer surface of a base tube; a hologram protective layer provided in an area that encompasses the hologram layer; and a color layer provided in an area that includes at least a portion of the hologram protective layer and also includes at least a portion of the hologram layer.

22. A shaft for a golf club as described in claim 21, wherein a matte layer is provided in the area including the color layer.

23. A shaft for a golf club as described in claim 22, wherein the mat layer is provided over the entire outer surface of the base tube.

24. A golf club shaft as described in claim 22 or 23, wherein a color protection layer is provided between the color layer and the mat layer so as to encompass the color layer.

25. A shaft for a golf club as described in claim 22 or 23, wherein a gloss layer is provided in an area including at least a portion of the mat layer.

26. A golf club shaft as described in claim 25, wherein the entire hologram layer is covered by the gloss layer when viewed from the radial outside of the base tube.

27. ​​A shaft for a golf club as described in claim 25, wherein the gloss layer is provided on the outer surface of the base tube in an area extending from the large diameter end to 70% of the area in the axial direction of the tube.

Images