JPH0562282U - Golf club - Google Patents

Abstract

(57) [Summary] [Object] To provide a golf club which has the advantages of a carbon shaft as it is and whose surface exhibits a high-grade metallic luster by the metal plating treatment in the same process regardless of the type of carbon fiber. [Structure] A golf club in which a two-component reactive type undercoat and a metallic luster plating are sequentially applied to a carbon shaft surface.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a golf club in which a carbon shaft has a metallic luster.

[0002]

[Prior art and its problems]

 Currently, golf clubs are expanding their use range because of their excellent strength and repulsion. The carbon fibers used in these current carbon shafts are roughly classified into a) carbon fiber: epoxy resin = 7: 3, and b) carbon fiber coated with Cu, Ni, Ag, Au, etc. Materials: Epoxy resin = 7: 3, C) Metal fibers such as Al, Ni, Ti, Ag, Au deposited on carbon fibers: Epoxy resin = 7: 3. However, ordinary carbon shafts using these fibers are only coated (polyurethane), and the surface is black and has no luster, and it is desired to have a high-grade metallic luster. .. Metallic coating is considered to be close to this, but only those with an appearance that is significantly different from metallic luster are obtained. Therefore, it is conceivable to apply metal plating to the carbon shaft.However, since the carbon shaft itself has a slight composition difference as described above, the metal plating depends on the composition. Pretreatment is needed. However, it is very difficult to perform various pretreatments depending on the composition in view of the line configuration, and the cost becomes high.

The present invention aims to provide a golf club which has the advantages of a carbon shaft as it is and whose surface exhibits a high-grade metallic luster by a normal metal plating treatment regardless of the type of carbon fiber. And

[0004]

[Means for Solving the Problems]

 That is, the invention solves the above-mentioned problems by a golf club having a structure in which a two-component reactive type undercoat and a metallic luster plating are sequentially applied to the surface of a carbon shaft.

FIG. 1 is an explanatory view of a golf club according to the present invention, wherein 1 is a carbon shaft, 2 is a base coating layer, and 3 is a metallic luster plating layer. The undercoating layer 2 formed on the surface of the carbon shaft 1 is applied with a clear or colored coating using a two-liquid reaction type such as polyurethane coating or epoxy coating. Then, the base coating layer 2 is formed on the surface of the carbon shaft 1 in an amount of 10 to 20 μm, dried at 70 to 90 ° C. for 20 to 40 minutes, and then subjected to the following metal plating. It should be noted that it is not suitable to use the high temperature baking type paint for the lower layer coating layer 2 because the prepreg is melted during baking. Since the metallic luster plating layer 3 is formed on the undercoat coating layer 2 and the undercoat coating layer 2 is coated on the surface of the carbon shaft 1, regardless of the composition of the carbon fiber, the metallic luster plating process in the same process is performed. The reason can be applied as it is. For more specific metallic luster plating, nickel plating, nickel plating and chrome plating, nickel plating and silver plating, etc. can be applied.

[0006]

【Example】

 A 1 t x 30 mm x C prepreg composed of 70% carbon fiber and 30% epoxy resin with Cu plating of 7 μφ wound around the core in a spiral shape, and after heat molding, remove the core. To form a carbon shaft 1. A two-pack type polyurethane paint was applied on the surface of the carbon shaft in a thickness of 15 μm and dried at 80 ° C. for 30 minutes to form a base coating layer 2. Then, metallic luster plating was applied as follows to form a metallic luster plating layer 3.

A) Nickel plating 1. Degreasing: Surfactant 70 ° C x 5 min 2. Washing with water: 3. Etching: Chromic acid mixed solution 70 ° C. × 5 min 4. Washing with water: 5. Neutralization treatment: 5% hydrochloric acid 25 ° C. × 3 min 6. Washing with water: 7. Electroless Pd plating (commercially available) 0.2 μm 50 ° C. × 5 min 8. Washing with water: 9. Activation treatment: 10% hydrochloric acid 35 ° C. × 2 min 10. Washing with water: 11. Electroless Ni plating Nickel sulfate 1 to 7 μm 90 ° C. × sodium hypophosphite 4 to 30 min 12. Washing with water: 13. Electrolytic nickel strike plating 0.5 to 1 μm (1 to ^{2 A} / dm ² × 15 min) (NiCl ₂ + HCl) 14. Washing with water: 15. Electrolytic nickel plating (NiSO ₄ + H ₃ BO ₃ + NiCl ₂ ) (Brightness) 5-10 μm (3A / dm ² × 15min) 16. Washing with water:

The nickel plating as described above may be only the one obtained in the above process, but in the above 16. After that, a chrome plating step may be added to perform chrome plating on the surface. The process in that case is shown below. b) Chrome plating Electrolytic chromium plating CrO ₃ + H ₂ SO ₄ 0.2 to 0.5 μm (40 A / dm ² × 15 min)

A case where silver plating is applied instead of chrome plating on the nickel plating will be described below. c) Silver plating Electrolytic silver plating Silver bromide, sodium bromide 0.5 to 1 μm (1 A / dm ² × 20 min)

As described above, as a result of performing a peeling test with cellophane tape by slitting 2 mm intervals in the circumferential direction of the shaft plated with nickel, nickel plating + chrome plating, nickel plating + silver plating, The sample also showed good adhesion without peeling. On the other hand, in the above nickel plating step, 15. When the semi-glossy nickel plating of the same thickness was applied, the film peeled.

[0011]

[Effect of the device]

 As described above, according to the present invention, a carbon shaft having a metallic luster with a good appearance, which has not been obtained in the past, can be obtained by performing metal plating treatment in the same process regardless of the difference in carbon fiber. A carbon shaft with a higher value can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional explanatory view of the present invention.

[Explanation of symbols]

 1 Carbon shaft 2 Undercoat layer 3 Metallic gloss plating layer

Claims (1)

[Scope of utility model registration request] 1. A golf club in which a two-component reactive type undercoat and a metallic luster plating are sequentially applied to the surface of a carbon shaft.