JP5557465B2 - Product and product manufacturing method - Google Patents

Description

  The present invention relates to a product and a method for manufacturing the product.

  In recent years, in sports products such as golf equipment, ski equipment, and mountain climbing equipment, the improvement of the structure for improving functionality and the development of new materials have reached a peak. Therefore, in this kind of athletic product, it is important to diversify the design and improve the decorativeness of the product, which can increase the value of the product in the market and stimulate consumers' willingness to purchase. Patent Document 1 is known as a technique for improving this type of decoration.

  Patent Document 1 discloses that on the surface of a golf club fiber-reinforced resin shaft, a vacuum deposition method, a sputtering method, a physical vapor deposition method such as an ion plating method, a chemical vapor deposition method such as a plasma CVD method, An invention in which a metal decoration layer is formed by a metal film formation method such as a wet plating method or a double gun spray using a silver mirror reaction, and a protective layer for preventing scratches and peeling is provided outside the formed metal decoration layer Is disclosed.

  By the way, when this kind of protective layer is formed of a synthetic resin paint, there arises a problem that the adhesiveness of the synthetic resin paint decreases as the unevenness of the surface of the metal decoration layer decreases. For example, since the surface of the metal decoration layer disclosed in Patent Document 1 has fine irregularities based on the metal film forming method, it does not necessarily mean that a synthetic resin paint cannot be adhered.

  However, when a metal plating layer is formed on the surface of a steel shaft for golf clubs by electroplating or ion reduction plating, the surface of the metal plating layer becomes a mirror-like smooth surface, and a synthetic resin paint is adhered. I can't let you.

  Therefore, conventionally, when a resin layer is formed using a synthetic resin paint on a metal plating layer formed on the surface of a steel shaft for golf clubs, by performing a blast treatment before the coating process, Fine irregularities were formed on the surface, or the metal plating layer was completely removed. In such a coating process, the number of work steps is increased by the blasting process, resulting in high costs.

  Further, a metal plating layer mainly composed of chromium (Cr) is formed on this type of golf club steel shaft. Since chromium has a bright metallic luster, if this metallic luster can be incorporated as a decorative element of the product, the decorativeness of the product can be improved. However, in the conventional painting process, the metallic luster of the metal plating layer is lost by the blasting process, and therefore the metallic luster cannot be incorporated into the design.

Japanese Patent Laid-Open No. 2003-284795

  An object of the present invention is to provide a product capable of protecting the metal plating layer and incorporating the metallic luster of the surface of the metal plating layer as a decorative element, and a method for manufacturing the product.

  Another object of the present invention is to provide a product that can be applied with a wide variety of decorations at low cost, and a method for manufacturing the product.

  In order to solve the above-described problems, a product according to the present invention includes a product main body portion, a metal plating layer, and a resin layer. The product main body is a rod-shaped body whose main component is a metal material. The metal plating layer has a metallic luster on the surface and covers the outer surface of the product main body. The resin layer contains a thermosetting resin and an adhesive component, is adhered to the surface of the metal plating layer, and the metal plating layer can be seen through from the surface.

  According to the above-described structure, the resin layer contains a thermosetting resin, and the product main body includes a metal material as a main component, so that baking painting is possible. Therefore, it can be applied at low cost with existing equipment without using a special apparatus.

  The metal plating layer has a metallic luster on the surface and covers the outer surface of the product main body. Since the surface of the metal plating layer is a mirror-like smooth surface, it has not been possible to adhere a resin paint conventionally. On the other hand, since the resin layer according to the present invention has an adhesive component, adhesion with the metal plating layer is ensured, and the resin layer is bonded to the surface of the metal plating layer. Therefore, the surface of the metal plating layer can be protected from external physical impact.

  The resin layer is adhered to the surface of the metal plating layer, and the metal plating layer can be seen through from the surface. According to this structure, the metallic luster on the surface of the metal plating layer can be incorporated as a decorative element.

  Furthermore, according to the structure which a resin layer has a coloring component, since the metallic luster of the surface of a metal plating layer is reflected as a metallic color with the color of a coloring component, decorativeness can be improved.

  In the method for producing a product according to the present invention, first, a metal plating layer is formed on the surface of the product main body by electroplating or ion reduction plating, and then a thermosetting resin, an adhesive component, The coating material containing this is apply | coated to the surface of a metal plating layer, Next, the product main-body part is heat-processed, and the process of hardening a coating material is included.

  In the manufacturing method described above, since the paint has an adhesive component, the resin layer can be formed by directly applying the paint to the surface of the metal plating layer without pre-blasting the metal plating layer. it can. Therefore, it is possible to incorporate the metallic luster on the surface of the metal plating layer as a decorative element, thereby improving the appearance of the product.

  Further, in the present invention, by forming at least one resin layer on the surface of the metal plating layer, a resin layer containing a coloring component can be adhered using this resin layer as a base. According to this structure, the metal plating layer can be more reliably protected from external physical impact, and the decorativeness can be improved.

  A product according to another aspect of the present invention includes a product main body portion and a resin layer. The product main body is rod-shaped and mainly contains either a metal material or fiber reinforced plastic. The resin layer contains a resin component and a coloring component, and has a portion penetrating the surface of the product main body in a region bonded to the surface of the product main body.

  The effect of the product described above appears more prominently when the manufacturing method is examined. That is, in the method for manufacturing a product according to another aspect of the present invention, first, a releasable paint is printed on the surface of the product body by screen printing, and can be peeled along the mask pattern on the surface of the product body. Next, a resin paint containing a resin component and a coloring component is applied to the surface of the product main body and the surface of the peelable area, and then the peelable area and the peelable area. Removing the resin paint applied on the region.

  According to the product and the manufacturing method of the product according to another aspect of the present invention, the surface of the product main body can be decorated with a variety of cutout characters and cutout patterns according to the mask pattern. . As a result, for example, the contrast between the coloring component of the resin layer and the base color appearing in the penetrating portion can be taken in as a decorative element. In addition, since the decoration can be performed using the screen printing technique, the manufacturing cost can be reduced.

As described above, according to the present invention, the following effects can be obtained.
(A) While protecting a metal plating layer, the metal luster of the surface of a metal plating layer can be taken in as a decoration element, and the manufacturing method of a product can be provided.
(B) It is possible to provide a product that can be applied with a wide variety of decorations at low cost and a method for manufacturing the product.

  Other objects, configurations and advantages of the present invention will be described in more detail with reference to the accompanying drawings. The accompanying drawings are merely examples.

It is sectional drawing of the product which concerns on one Embodiment of this invention. It is a figure which expands and shows a part of sectional drawing shown in FIG. It is sectional drawing which abbreviate | omits and shows the manufacturing method of the product which concerns on one Embodiment of this invention. FIG. 4 is a cross-sectional view showing a step that follows the step shown in FIG. 3. FIG. 5 is a cross-sectional view showing a step that follows the step shown in FIG. 4. It is sectional drawing of the product which concerns on another embodiment of this invention. It is sectional drawing of the product which concerns on another embodiment of this invention. It is sectional drawing of the product which concerns on another embodiment of this invention. It is sectional drawing which abbreviate | omits an edge part and shows about the manufacturing method of the product which concerns on another embodiment of this invention. FIG. 10 is a cross-sectional view showing a step that follows the step shown in FIG. 9. It is sectional drawing along the 11-11 line of FIG. FIG. 12 is a cross-sectional view showing a step after the step shown in FIGS. 10 and 11. It is sectional drawing along line 13-13 in FIG. It is sectional drawing which abbreviate | omits and shows the edge part about the product which concerns on another embodiment of this invention. It is sectional drawing which abbreviate | omits an edge part and shows about the manufacturing method of the product which concerns on another embodiment of this invention. FIG. 16 is a cross-sectional view showing a step that follows the step shown in FIG. 15. FIG. 17 is a cross-sectional view taken along line 17-17 in FIG. FIG. 18 is a cross-sectional view showing a step that follows the step shown in FIGS. 16 and 17. FIG. 19 is a cross-sectional view taken along line 19-19 of FIG.

  FIG. 1 is a cross-sectional view of a product according to an embodiment of the present invention, and FIG. 2 is an enlarged view of a part of the cross-sectional view shown in FIG. The product according to the present invention is any one selected from a golf club shaft, a fishing rod, a walking stick, a ski stock, a mountain climbing stock, a tennis racket, and a badminton racket. Hereinafter, for convenience of explanation, a golf club shaft will be described as an example, but the present invention is not necessarily limited thereto.

  The product shown in FIGS. 1 and 2 includes a product main body 10, a metal plating layer 20, a resin layer 31, and a protective layer 40. The product main body 10 is a rod-shaped body mainly composed of a metal material. Here, the rod-like body is one that means that the length dimension seen in the axial direction a is larger than the maximum passing diameter dimension seen in the radial direction d.

  When the product main body 10 is a so-called steel shaft, steel is used as the metal material, and more preferably carbon steel (alloy of Fe and C), or chromium (Cr), molybdenum (Mo), nickel (Ni ), Special steel obtained by adding vanadium (V) or the like.

  Moreover, the product main body 10 has a configuration that a steel shaft should normally have. That is, the product main body 10 is a tubular body or a pipe-like body having a circular cross section, and has a through-hole penetrating the inside in the axial direction a, and the other end from the axial direction a (grip side) to the other end. The taper structure becomes gradually narrower toward the head side.

  The metal plating layer 20 is provided so as to cover the outer surface 100 of the product main body 10 from the viewpoint of imparting impact resistance, wear resistance, corrosion resistance, weather resistance, and decorativeness to the product main body 10. Usually, the metal plating layer 20 provided on the steel shaft is formed by an electroplating method or an ion reduction plating method. The metal plating layer 20 is required to have a thickness that does not impair various properties such as flex, torsional rigidity, and kick point of the steel shaft, and is preferably formed on the outer surface 100 with a thickness of about 0.1 μm.

  The surface 200 of the metal plating layer 20 is a mirror-like smooth surface, and metallic luster and mirror luster appear. Specifically, when the metal plating layer 20 has chromium (Cr) as a main component, the surface 200 has white metallic luster that chromium has.

  In FIG. 1 and FIG. 2, for convenience of explanation, the metal plating layer 20 is expressed as a single layer, but is not necessarily limited thereto. For example, the metal plating layer 20 has a multilayer structure of a nickel plating layer and a chromium plating layer, the nickel plating layer is formed on the outer surface 100 of the product main body 10 with a thickness of about 5 to 15 μm, and the surface of the nickel plating layer In addition, the chromium plating layer may be formed with a thickness of about 0.1 μm. The multilayer structure of the plating layer described above is called decorative chrome plating.

  One of the features of the present invention is that the resin layer 31 is bonded to the surface 200 of the metal plating layer 20. The resin layer 31 shown in FIGS. 1 and 2 contains a thermosetting resin as a main component, further contains an adhesive component and a coloring component, and is adhered to the surface 200 of the metal plating layer 20. The resin layer 31 is a baked film, and the layer thickness dimension is preferably 0.3 mm or less, more preferably 0.1 mm or less.

The adhesive component used for the resin layer 31 is mainly composed of at least one selected from an isocyanate, a blocked isocyanate resin, or a silane coupling agent. The silane coupling agent contains an epoxy group and silane (Si) in its structure, and is preferably selected from the following (i) to (v).
(I) 3-aminopropyltriethoxysilane (ii) 3-aminopropyltrimethoxysilane (iii) N- (2-aminoethyl) -3-aminopropyltrimethoxysilane (iv) N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane (v) 3- (N-phenyl) -3-aminopropyltrimethoxysilane In the present invention, adhesion does not peel within a period in which the product can be used normally. Refers to nature. In this invention, an adhesive component refers to what has an adhesive effect by itself, and does not contain auxiliary adhesives, such as an adhesion promoter.

  The thermosetting resin used for the resin layer 31 can be mixed with an adhesive component, and can be selected from resins for baking paints that are usually used for baking coating. In the present invention, the baked coating refers to a coating in which the applied paint layer is heated at a preset minimum temperature to cause the binder to crosslink and cure. The baked paint is a paint prepared so that a coating film can be formed by applying it to a substrate and then heating, and the heating temperature indicates 100 ° C. or higher.

  Thermosetting resins used for the resin layer 31 are melamine resin (MF), phenol resin (PF), epoxy resin (EP), urea resin (UF), unsaturated polyester resin (UP), diallyl phthalate resin (PDAP or DAP) or the like.

  The metal plating layer 20 can be seen through the resin layer 31 from the surface 310 of the resin layer 31. That is, the resin layer 31 is transparent. The transparency (transmittance) of the resin layer 31 can be obtained by appropriately adjusting the resin component. For example, by using an epoxy resin (EP) as the thermosetting resin, the resin layer 31 becomes transparent to the extent that the metal plating layer 20 can be seen from the surface 310. Moreover, the resin layer 31 becomes transparent by containing at least one of an acrylic resin or a urethane resin in addition to the thermosetting resin as a resin component.

  The coloring component is mainly composed of a dye or a pigment, and is mixed at a ratio of 15 wt% or less. The coloring component can be selected from those commonly used and is not particularly limited. Examples of coloring components include titanium oxide, organic red pigments, barium sulfate, and carbon black. The content rate of a coloring component can be adjusted according to a color tone.

  1 and 2, the protective layer 40 is bonded to the surface 310 of the resin layer 31 using a transparent synthetic resin material. The resin used for the protective layer 40 can be selected from those having compatibility with the resin layer 31 and those that can be adhered to the resin layer 31, and preferably constitutes the resin layer 31. The same or the same kind of synthetic resin material can be used. The protective layer 40 ensures impact resistance, wear resistance, corrosion resistance, weather resistance, etc. (durability), and can have higher hardness than the resin layer 31.

  In FIG. 1 and FIG. 2, the protective layer 40 is expressed as a single layer, but is not necessarily limited to this. The durability can be improved by adhering the transparent protective layer 40 to the resin layer 31 in multiple layers.

  According to the configuration of the product shown in FIGS. 1 and 2, the resin layer 31 is mainly composed of a thermosetting resin, and the product main body 10 is mainly composed of a metal material, so that baking coating is possible. Since the baking coating can be performed using an existing coating apparatus, it can be performed at low cost without using a special apparatus or an expensive apparatus.

  The metal plating layer 20 has a metallic luster on the surface 200 and covers the outer surface 100 of the product main body 10. Conventionally, when the metal plating layer 20 is formed by an electroplating method or an ion reduction plating method, the surface 200 is a mirror-like smooth surface. Therefore, the resin layer 31 formed using a resin paint is used. It could not be adhered. On the other hand, the resin layer 31 according to an embodiment of the present invention has an adhesive component with a silane coupling agent as a main component, thereby ensuring adhesion with the metal plating layer 20. Even if is a mirror surface, the resin layer 31 can be adhered. Therefore, it is possible to protect the surface 200 of the metal plating layer 20 from external physical impact and ensure durability.

  The resin layer 31 shown in FIGS. 1 and 2 is mainly composed of a transparent thermosetting resin and further has a coloring component. The resin layer 31 is adhered to the surface 200 of the metal plating layer 20, and the metal plating layer 20 is transparent from the surface 310. I can see. According to this structure, the metallic luster of the surface 200 is reflected as a metallic color with the color of the coloring component, so that the metallic luster of the surface 200 can be incorporated as a decorative element and the aesthetics of the product can be improved.

  3 to 5 are cross-sectional views illustrating the method for manufacturing a product according to an embodiment of the present invention with the end portions omitted. 3 to 5, the same components as those shown in FIGS. 1 and 2 are denoted by the same reference numerals.

  The operational effects of the products shown in FIGS. 1 and 2 will be further described from the viewpoint of the manufacturing method. First, referring to FIG. 3, a metal plating layer 20 is formed on the outer surface 100 of the product main body 10 by an electroplating method or an ion reduction plating method. The metal plating layer 20 is subjected to a cleaning process in advance before applying a paint. Specifically, the cleaning process includes a cleaning process and a degreasing process. In the cleaning process, dust and dirt attached to the surface 200 of the metal plating layer 20 are removed using a neutral detergent. In the degreasing step, the oil-based stains adhering to the surface 200 are removed from the metal plating layer 20 that has undergone the cleaning step with a rag soaked in naphtha.

  The process shown in FIG. 4 is a process subsequent to the process shown in FIG. 3, and a coating (baking coating) containing a thermosetting resin as a main component and further containing an adhesive component and a coloring component is plated with metal. It is applied to the surface 200 of the layer 20 to form a paint layer that is the basis of the resin layer 31. The paint used in the step of FIG. 4 can further contain a diluent. In this invention, a diluent is used in order to adjust the viscosity of a coating material, and can be normally selected from what is used. The diluent is preferably an organic solvent, and particularly at least one selected from toluene, xylene, isopropyl alcohol, n-butyl alcohol, isobutyl alcohol, ethyl acetate, butyl acetate and the like.

  When the product according to the present invention is a golf shaft, the coating process of FIG. 4 can be performed by spray coating using a spray gun or ironing coating. For ironing, first baked paint into the cup. The cup is provided with a plate rubber having a thickness of about 0.8 to 2.0 mm at the bottom, and a circular through hole of about 4.0 to 5.5 mm is opened in the surface of the plate rubber. The product body portion 10 is inserted into the through hole from the tip on the small diameter side (head side), dipped in the baked paint in the cup, and then pulled out from the through hole, whereby the coating layer is applied to the surface 200 of the metal plating layer 20. Is formed.

  Further, the intermediate product in which the coating layer is formed on the metal plating layer 20 is heat-treated to cure the coating layer. In the heat treatment, the intermediate product is guided into an electric furnace having a sealed heat treatment chamber, and is entirely heat-treated in an atmosphere in a predetermined temperature range. The temperature range is preferably 100 ° C. or higher and 200 ° C. or lower, more preferably 150 ° C. or higher and 180 ° C. or lower. The treatment time is preferably 10 minutes or longer and 30 minutes or shorter. For example, when heat treatment is performed in an atmosphere at a temperature of 150 ° C., the coating layer is thermally cured in about 15 minutes, and the resin layer 31 is formed.

  The process shown in FIG. 5 is a process after the process shown in FIG. 4, and a protective layer 40 is further formed on the surface 310 of the resin layer 31. The protective layer 40 is formed by applying a transparent synthetic resin material having overcoat compatibility to the resin layer 31 to the surface 310 by ironing, and further heat-treating under the above-described conditions. The protective layer 40 can have a multilayer structure by repeating the above-described coating process and heat treatment process a predetermined number of times according to the durability required for the product.

  In the manufacturing method of the product described with reference to FIGS. 3 to 5, the coating material used to form the resin layer 31 is mainly composed of a thermosetting resin and further has an adhesive component. The surface 200 of the plating layer 20 can be applied directly to the surface 200 without being subjected to blasting. Therefore, it is possible to incorporate the metallic luster of the surface 200 of the metal plating layer 20 as a decorative element, thereby improving the appearance of the product.

  Conventionally, in a metal film forming method using a vacuum vapor deposition method or the like, the metal vapor deposition film is easily peeled off. Therefore, it is necessary to form the resin layer (31) immediately after the metal vapor deposition film is formed. On the other hand, since the resin layer 31 according to the present invention can be bonded to the surface 200 of the metal plating layer 20, it is easy to manufacture. In addition, when there is a defect in the formed coating film, the production yield is improved, for example, the painting can be performed again.

  Since the paint used for constituting the resin layer 31 is mainly composed of a transparent thermosetting resin and further has a coloring component, the metallic luster of the surface 200 of the metal plating layer 20 is the color of the coloring component. It is reflected as a metallic color with. Therefore, the decorativeness of the product can be improved.

  By forming the resin layer 31 on the surface 200 of the metal plating layer 20, a protective layer is formed on the surface 310 using a transparent resin paint having the resin layer 31 as a base, and further having a recoating compatibility with the resin layer 31. 40 can be formed. Accordingly, it is possible to prevent the resin layer 31 from being peeled off and improperly moved, and to ensure durability.

  FIG. 6 is a cross-sectional view of a product according to another embodiment of the present invention. In FIG. 6, the same components as those shown in FIGS. 1 to 5 are denoted by the same reference numerals.

  The embodiment of FIG. 6 has a multi-layer structure that has two effects obtained by the resin layer 31 of FIGS. 1 to 5, that is, an adhesive effect on the surface 200 of the metal plating layer 20 and a decorative effect that reflects a metallic luster. This is what is achieved. Hereinafter, the difference will be mainly described.

  In the embodiment of FIG. 6, the product includes a product main body 10, a metal plating layer 20, a first resin layer 32, a second resin layer 33, and a protective layer 40.

  The first resin layer 32 contains a transparent thermosetting resin and an adhesive component, and is bonded to the surface 200 of the metal plating layer 20. As the thermosetting resin and the adhesive component constituting the first resin layer 32, the same resin layer 31 as described with reference to FIGS. 1 to 5 can be used.

  The second resin layer 33 contains a transparent thermosetting resin and a coloring component, is adhered to the surface 320 of the first resin layer 32, and the metal plating layer 20 can be seen through the surface 330.

  As the thermosetting resin and the coloring component constituting the second resin layer 33, those described with reference to FIGS. 1 to 5 can be used. Further, the resin used for the second resin layer 33 can be selected from those having compatibility with the first resin layer 32 and those that can be adhered to the first resin layer 32. Yes, preferably, the same or the same kind of thermosetting resin that constitutes the first resin layer 32 can be used.

  The embodiment shown in FIG. 6 can have all of the advantages described with reference to FIGS. Furthermore, according to the embodiment of FIG. 6, the second resin layer 33 is based on the first resin layer 32. According to this structure, when there are surface defects such as scratches and irregularities on the surface 100 of the product main body 10 and the surface 200 of the metal plating layer 20, the surface defects are eliminated and eliminated by the first resin layer 32. In this state, the second resin layer 33 can be adhered to the surface 320 of the first resin layer 32. Therefore, the manufacturing yield is improved and the decorativeness is improved.

  FIG. 7 is a cross-sectional view of a product according to still another embodiment of the present invention. In FIG. 7, the same components as those shown in FIGS. 1 to 6 are denoted by the same reference numerals. The embodiment of FIG. 7 is different from the embodiment of FIGS. 1 to 5 in that it has a second resin layer 33. Hereinafter, the difference from the embodiment of FIGS. 1 to 5 will be mainly described.

  In the product of FIG. 7, the resin layer 31 contains a transparent thermosetting resin, an adhesive component, and a coloring component, and is adhered to the surface 200 of the metal plating layer 20, preferably from the surface 310 to the metal plating layer. 20 can be seen through. The second resin layer 33 contains a transparent thermosetting resin and a coloring component, and is adhered to the surface 310 of the resin layer 31, and from the surface 330 to the surface 200 of the metal plating layer 20 or the resin layer 31. The surface 310 can be seen through.

  As the thermosetting resin and the coloring component constituting the second resin layer 33, those described with reference to FIG. 6 can be used. Furthermore, the resin used for the second resin layer 33 can be selected from those having compatibility with overcoating with the resin layer 31 or those that can be adhered to the resin layer 31. Preferably, the resin The same or the same kind of thermosetting resin that constitutes the layer 31 can be used.

  The resin layer 31 and the second resin layer 33 include different coloring components. The layer thickness of the second resin layer 33 gradually decreases from the point P1 toward the point P2. The second resin layer 33 can be formed by spray painting using a spray gun.

  According to the embodiment of FIG. 7, the stepwise change (gradation) of the color can be expressed by the overlapping of the resin layer 31 and the second resin layer 33 and the layer thickness decreasing portion of the second resin layer 33. It becomes possible. Therefore, diversification of design can be achieved.

  FIG. 8 is a cross-sectional view of a product according to still another embodiment of the present invention. In FIG. 8, the same components as those shown in FIGS. 1 to 7 are denoted by the same reference numerals.

  The embodiment of FIG. 8 is different from the embodiment of FIGS. 1 to 7 in that a through portion 35 is provided in a part of the resin layer 31. Hereinafter, the difference will be mainly described.

  In the embodiment of FIG. 8, the resin layer 31 has a portion 35 that penetrates the surface 200 in a region bonded to the surface 200 of the metal plating film 20 (generally, the outer surface 100 of the product main body 10). The penetrating portion 35 is filled with a transparent protective layer 40. With this structure, an area where the metallic luster of the surface 200 is reflected through the transparent protective layer 40 and a portion where the metallic luster of the surface 200 is reflected by the color of the resin layer 31 are formed on the surface of the product. ing. Therefore, according to the embodiment of FIG. 8, decorations such as complicated and finely drawn characters and patterns can be given by appropriately forming the planar shape of the penetrating portion 35.

  9 to 13 are cross-sectional views illustrating a method for manufacturing a product according to still another embodiment of the present invention with end portions omitted. 9 to 13, the same components as those shown in FIGS. 1 to 8 are denoted by the same reference numerals.

The effects of the product shown in FIG. 8 will be further described from the viewpoint of the manufacturing method. First,
A metal plating layer 20 is formed on the surface 200 of the metal plating film 20 (generally, the outer surface 100 of the product main body 10) by electroplating or ion reduction plating. The metal plating layer 20 is previously subjected to the cleaning process described with reference to FIGS. 3 to 5 before applying the paint.

  Next, referring to FIG. 9, a peelable paint is applied to the surface 200 of the metal plating layer 20 by screen printing to form a peelable region 50. As an example, a releasable paint is a two-component mixed paint that uses a mixture of a main agent and a curing agent, and does not contain a curing agent (curing element), or a paint that can be used normally includes a peeling promoting component such as silicone oil. A mixture can be used.

  Although not necessarily clear from FIG. 9, in the screen printing process, the peelable paint is put on the screen. The screen has a mask pattern corresponding to characters, symbols, logos, patterns, etc. (characters, etc.), and a metal plating layer placed under the screen by stretching the peelable paint on the screen with a squeegee. A releasable paint is applied to the surface 200 of 20 to form a releasable region 50 such as characters along the mask pattern. In FIG. 9, the peelable region 50 is indicated by an alphabet A as an example.

  The process shown in FIG. 10 is a process after the process shown in FIG. 9, and the surface 200 of the metal plating layer 20 is coated with a paint used for the resin layer 31 by spraying or ironing using a spray gun. And applied to the surface 500 of the peelable region 50. By this step, as shown in FIG. 11, an intermediate product in which the resin layer 31 is formed on the surface 200 of the metal plating layer 20 and the surface 500 of the peelable region 50 is obtained.

  The process shown in FIG. 12 is a process after the process shown in FIGS. 10 and 11. Next, the surface of the intermediate product is washed with a solvent or the like, and the peelable area 50 is changed to the peelable area 50. The resin layer 31 formed above is removed. By this step, as shown in FIG. 13, a penetrating portion 35 penetrating the surface 200 and exposing the surface 200 to the outside is formed in the region of the resin layer 31 bonded to the metal plating layer 20.

  The product shown in FIG. 8 is obtained by performing the heat treatment step described with reference to FIGS. 3 to 5 and the forming step of the protective layer 40 after the steps shown in FIGS.

  According to the manufacturing method described with reference to FIGS. 9 to 13, the surface 200 of the metal plating layer 20 has a variety of decorations that cannot be realized by masking or the like, and have decorations such as complicated fine cut letters and cut patterns. Layer 31 can be formed. In addition, the manufacturing cost is reduced by the amount that the masking seal and the masking labor are not required, and the product yield is improved. Therefore, a wide variety of decorations can be applied at low cost.

  In addition, since various kinds of decorations such as complicated and fine cut letters and cut patterns can be applied by screen printing technology, it is possible to respond to orders for small lots. On the other hand, in the method of removing a part of the resin layer 31 by masking or laser processing, the manufacturing cost cannot be reduced. In particular, in the case of masking, the cost is increased by the amount of the masking seal and the masking labor, so it is not possible to respond to orders for small lots.

  FIG. 14 is a cross-sectional view showing a product according to still another embodiment of the present invention with an end portion omitted. 14, the same components as those shown in FIGS. 1 to 13 are denoted by the same reference numerals.

  The golf club shaft according to the present invention, a fishing rod, a walking stick, a ski stock, a mountaineering stock, a tennis racket, and a badminton racket. For example, golf club shafts are known as steel shafts made of carbon steel (Fe, C alloys) and fiber reinforced plastic shafts made of fiber reinforced plastics (FRP). . Further, as fiber reinforced plastic shafts, CFRP shafts using carbon fibers as reinforcing materials and GFRP shafts using glass fibers as reinforcing materials are known. Hereinafter, for convenience of explanation, a CFRP shaft (carbon shaft) will be described as an example, but the present invention is not necessarily limited thereto.

  The product shown in FIG. 14 includes a product main body 10, a base layer 21, a resin layer 34, and a protective layer 40. The product main body 10 has a rod shape. Here, the rod-like body is one that means that the length dimension seen in the axial direction a is larger than the maximum passing diameter dimension seen in the radial direction d.

  The product main body 10 has a configuration that a carbon shaft should normally have. That is, the product main body 10 is a tubular body or a pipe-like body having a circular cross section, and has a hollow portion that penetrates the inside in the axial direction a, from the one end (grip side) in the axial direction a to the other end. The outer shape of the taper structure is gradually reduced toward the head side.

  The base layer 21 is provided so as to cover the product main body 10 and is bonded to the outer surface 100 from the viewpoint of imparting impact resistance, wear resistance, corrosion resistance, weather resistance, and decorativeness to the product main body 10. . The underlayer 21 can be selected from those that can be bonded to the outer surface 100 of the product main body 10, and may be composed mainly of a metal material or synthetic resin.

  The resin layer 34 includes a resin component and a coloring component, and further includes an adhesive component as necessary. The resin layer 34 is adhered to the surface 210 of the base layer 21, and the base layer 21 can be seen through the surface 210. The resin component constituting the resin layer 34 can be selected from those that can adhere to the surface 210 of the base layer 21. The resin layer 34 has a layer thickness dimension of preferably 0.3 mm or less, more preferably 0.1 mm or less.

The adhesive component constituting the resin layer 34 is contained when the base layer 21 contains a metal material as a main component, and preferably contains at least one selected from an isocyanate, a blocked isocyanate resin, or a silane coupling agent as a main component. And The silane coupling agent contains an epoxy group and silane (Si) in its structure, and is preferably selected from the following (i) to (v).
(I) 3-aminopropyltriethoxysilane (ii) 3-aminopropyltrimethoxysilane (iii) N- (2-aminoethyl) -3-aminopropyltrimethoxysilane (iv) N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane (v) 3- (N-phenyl) -3-aminopropyltrimethoxysilane In the present invention, adhesion does not peel within a period in which the product can be used normally. Refers to nature. In this invention, an adhesive component refers to what has an adhesive effect by itself, and does not contain auxiliary adhesives, such as an adhesion promoter.

  The resin component which comprises the resin layer 34 can be selected from what is normally used, and is not specifically limited. However, when the base layer 21 is mainly composed of a metal material, the resin component constituting the resin layer 34 can be mixed with an adhesive component, and includes a melamine resin, an acrylic resin, an epoxy resin, Alternatively, at least one selected from urethane resins and the like is used.

  The coloring component constituting the resin layer 34 is mainly composed of a dye or a pigment, and is mixed at a ratio of 15 wt% or less. The coloring component can be selected from those usually used, and is not particularly limited. Examples include titanium oxide, organic red pigments, barium sulfate, and carbon black. The content rate of the coloring component can be adjusted according to the color tone to be expressed by the coloring component.

  Again, a description will be given with reference to FIG. The resin layer 34 includes a synthetic resin as a main component, and has a portion 35 penetrating the surface 210 in a region bonded to the surface 210 of the base layer 21 (generally, the outer surface 100 of the product main body 10). The underlayer 21 can be seen through from the portion 35 to be processed.

  Further, a protective layer 40 is formed on the surface 340 of the resin layer 34 using a transparent synthetic resin material. The resin used for the protective layer 40 can be selected from those having compatibility with the resin layer 34 or capable of being adhered to the resin layer 31, and preferably constitutes the resin layer 31. The same or the same kind of synthetic resin material can be used. The protective layer 40 ensures impact resistance, wear resistance, corrosion resistance, weather resistance, and the like (durability), and can have higher hardness than the resin layer 34.

  The protective layer 40 is formed to ensure durability to the resin layer 34, the base layer 21, and the product main body 10. In FIG. 14, the protective layer 40 is expressed as a single layer for convenience of description, but is not necessarily limited to this. The composition of the protective layer 40 can be adjusted according to the purpose. Specifically, when the transparent protective layer 40 is formed on the resin layer 34, this layer prevents the resin layer 34 from being peeled, discolored, and improperly moved. Various colors can be expressed by adhering the protective layer 40 having a coloring component having a color tone different from that of the resin layer 34.

  In the embodiment of FIG. 14, the resin layer 34 has a portion 35 penetrating the outer surface 100 of the product main body portion 10 in a region bonded to the outer surface 100 of the product main body portion 10, and is transparent to the penetrating portion 35. The protective layer 40 is filled. With this structure, the surface of the product has the area where the metallic luster and color of the surface 210 of the underlayer 21 are reflected through the transparent protective layer 40, and the metallic luster and color of the surface 210 of the underlayer 21 due to the resin layer 34. A portion reflected with color is formed.

  According to the embodiment shown in FIG. 14, decorations such as complicated and finely drawn letters and patterns can be applied by appropriately forming the through portions 35.

  15 to 19 are cross-sectional views illustrating a method for manufacturing a product according to still another embodiment of the present invention with end portions omitted. 15 to FIG. 19, the same reference numerals are given to the same components as those shown in FIG. 1 to FIG.

  The effects of the product shown in FIG. 14 will be further described from the viewpoint of the manufacturing method. First, the base layer 21 is formed on the outer surface 100 of the product main body 10. This underlayer 21 is subjected to a cleaning process in advance before coating. Specifically, the cleaning process includes a cleaning process and a degreasing process. In the cleaning process, dust and dirt attached to the surface (210) of the base layer 21 are removed using a neutral detergent. Further, in the degreasing step, the oily soil adhering to the base layer 21 is removed from the base layer 21 from which the dust and the like on the surface have been removed by the cleaning step, with a rag soaked with naphtha.

  Next, referring to FIG. 15, a peelable paint is applied to the surface 210 of the base layer 21 by screen printing to form a peelable region 50. As an example, a releasable paint is a two-component mixed paint that uses a mixture of a main agent and a curing agent, and does not contain a curing agent (curing element), or a paint that can be used normally includes a peeling promoting component such as silicone oil. A mixture can be used.

  Although not necessarily clear from FIG. 15, in the screen printing process, the peelable paint is put on the screen. The screen has a mask pattern corresponding to characters, symbols, logos, patterns, etc. (characters, etc.), and the base layer 21 placed under the screen is stretched by squeezing the peelable paint on the screen with a squeegee. A releasable paint is applied to the surface 210 to form a releasable region 50 for characters and the like along the mask pattern.

  The process shown in FIG. 16 is a process after the process shown in FIG. 15, and the surface layer 210 of the base layer 21 is coated with a paint used for the resin layer 34 by spray coating using a spray gun, ironing, or the like. And it applies to the surface 500 of the peelable area 50. By this step, as shown in FIG. 17, an intermediate product in which the resin layer 34 is formed on the surface 210 of the base layer 21 and the surface 500 of the peelable region 50 is obtained.

  The process shown in FIG. 18 is a process after the process shown in FIGS. 16 and 17. Next, the surface of the manufacturing intermediate product with a solvent or the like is cleaned, and the peelable area 50 is changed to the peelable area 50. The resin layer 34 formed above is removed. By this step, as shown in FIG. 19, a penetrating portion 35 that penetrates the surface 210 and exposes the surface 210 to the outside is formed in the region of the resin layer 34 bonded to the surface 210 of the foundation layer 21. .

  The product shown in FIG. 14 is obtained by performing the drying process (heat treatment process) of the resin layer 34 and the forming process of the protective layer 40 after the process shown in FIGS.

  According to the manufacturing method described with reference to FIGS. 15 to 19, the resin layer having a variety of decorations that cannot be realized by masking or the like on the surface 210 of the base layer 21, such as complex fine cut characters and cut patterns. 34 can be formed. In addition, the manufacturing cost is reduced by the amount that the masking seal and the masking labor are not required, and the product yield is improved. Therefore, a wide variety of decorations can be applied at low cost.

  Furthermore, since a variety of decorations such as complicated and finely drawn characters and patterns can be applied by screen printing technology, it is possible to respond to orders for small lots.

  On the other hand, the manufacturing cost cannot be reduced by the method of removing a part of the resin layer 34 by masking or laser processing. In particular, in the case of masking, the cost is increased by the amount of the masking seal and the masking labor, so it is not possible to respond to orders for small lots.

  Although the contents of the present invention have been specifically described above with reference to the preferred embodiments, it is obvious that those skilled in the art can take various modifications based on the basic technical idea and teachings of the present invention. It is.

DESCRIPTION OF SYMBOLS 10 Product main-body part 20 Metal plating layer 31-34 Colored layer 40 Protective layer

Claims (6)

A product including a product body, a metal plating layer, and a resin layer,
The product main body is a rod-shaped body mainly composed of a metal material,
The metal plating layer has a metallic luster on the surface and covers the outer surface of the product main body,
The resin layer contains a thermosetting resin and an adhesive component, and is adhered to the surface of the metal plating layer, and the metal plating layer is seen through from the surface,
Furthermore, the metal plating layer is mainly composed of chromium,
The adhesive component is mainly composed of at least one selected from isocyanate, blocked isocyanate resin, or silane coupling agent,
Product. The product according to claim 1, wherein the resin layer further contains a coloring component.
Product. A product including a product main body, a metal plating layer, a first resin layer, and a second resin layer,
The product main body is a rod-shaped body mainly composed of a metal material,
The metal plating layer has a metallic luster on the surface and covers the outer surface of the product main body,
The first resin layer contains a thermosetting resin and an adhesive component, and is bonded to the surface of the metal plating layer;
The second resin layer contains a thermosetting resin and a coloring component, is adhered to the surface of the first resin layer, and the metal plating layer is seen through from the surface,
Furthermore, the metal plating layer is mainly composed of chromium,
The adhesive component is mainly composed of at least one selected from isocyanate, blocked isocyanate resin, or silane coupling agent,
Product. A product according to any one of claims 1 to 3,
The product main body is a product having a circular cross-section and being narrowed from one end to the other end in the axial direction . 5. The product according to claim 1, wherein the product is selected from a golf club shaft, a fishing rod, a walking stick, a ski stock, a mountain climbing stock, a tennis racket, and a badminton racket. Is,
Product. A method for manufacturing a product according to any of claims 1 to 5,
First, on the surface of the product main body, the metal plating layer is formed by electroplating or ion reduction plating,
Next, a paint containing a thermosetting resin and an adhesive component is applied to the surface of the metal plating layer,
Next, the product body is heat treated to cure the paint.
A manufacturing method including a process.

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