Plated comb and its manufacturing method

Abstract

To provide a plated comb which does not require any cover and has no risk of exposing nickel in a base plating layer, and a method for manufacturing the same. [Solution] The plated comb of the present invention consists of a comb-shaped two-color molded body in which a first member 11 made of a resin that is difficult to plate is wrapped inside a second member 12 made of a resin that is easy to plate, and a plating layer is formed on the entire surface of the second member 12, with a portion of the first member 11 exposed from the surface of the second member 12 covered with the plating layer.

Description

[Technical Field]

[0001] The present invention relates to a comb having a plated surface and a method for manufacturing the same. [Background technology]

[0002] Applying a plating treatment such as chrome plating to the surface of a resin comb not only improves the aesthetic appearance, but also smooths the surface of the comb teeth, making it easier for hair to slide through, and also has the effect of dissipating static electricity generated in the hair. For this reason, Patent Documents 1 and 2 propose plated combs and methods for manufacturing them.

[0003] In order to plate the surface of a comb, a hook called a hanger is formed on part of the comb and the comb is generally immersed in a plating tank while hanging. This hanger is cut off after plating, but the plating layer in the cut area peels off, exposing the nickel in the base plating layer, which looks unattractive and is undesirable from a design perspective.

[0004] Therefore, in the invention of Patent Document 1, a through hole is formed in the grip part of the comb, an electrode is passed through the through hole to hang the comb, and then a cover is fitted on both sides of the through hole to prevent the through hole from being exposed to the outside.In addition, in the invention of Patent Document 2, a metal cover that covers the through hole is fitted into the grip part to prevent the through hole from being exposed to the outside.

[0005] However, these conventional combs require a lid or metal cover to cover the through-hole, and there is a risk that these will loosen and fall off after years of use. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 6176514 [Patent Document 2] Patent No. 7089321 Summary of the Invention [Problem to be solved by the invention]

[0007] The object of the present invention is to solve the above-mentioned conventional problems and to provide a plated comb and a manufacturing method thereof that does not require a lid or metal cover to cover the through hole and that does not pose a risk of exposing the nickel in the base plating layer. [Means for solving the problem]

[0008] The plated comb of the present invention, which was developed to solve the above-mentioned problems, consists of a comb-shaped two-color molded body in which a first member made of a resin that is difficult to plate is enclosed inside a second member made of a resin that is easy to plate, and a plating layer is formed on the surface of the second member, and a portion of the first member is exposed from the surface of the second member that is covered with the plating layer.

[0009] The first member may be exposed on the side of the comb teeth covered with the plating layer, and a fragrance component may be contained in the first member. Also, the plating layer may be made of an electroless nickel plating layer and a chrome plating layer, the first member may be made of PC resin, and the second member may be made of ABS resin.

[0010] Furthermore, the method for manufacturing a plated comb of the present invention, which has been devised to solve the above-mentioned problems, is characterized by comprising: a first step of manufacturing a comb-shaped two-color molded body in which a first member made of a resin that is difficult to plate is wrapped inside a second member made of a resin that is easy to plate; a second step of cutting the gate portion of the second member of the two-color molded body; a third step of forming a plating layer on the entire surface of the second member of the two-color molded body using the gate portion of the first member of the two-color molded body as a hook portion; and a fourth step of cutting the gate portion of the first member on which no plating layer is to be formed. [Effects of the Invention]

[0011] The plated comb of the present invention is a comb-shaped two-color molded body in which a first component made of a resin that is difficult to plate is enclosed within a second component made of a resin that is easy to plate, and a plating layer is formed on the surface of the second component, which improves hair smoothness and has the effect of dissipating static electricity generated in the hair. Moreover, because there are no through holes or components to cover them, the number of parts can be reduced and there is no risk of parts falling off even after years of use.

[0012] According to the method for manufacturing a plated comb of the present invention, a comb-shaped two-color molded product is produced in which a first member made of a resin that is difficult to plate is enclosed inside a second member made of a resin that is easy to plate, and a plating layer is formed on the entire surface of the second member by using the gate portion of the first member of the two-color molded product as a hook portion. Therefore, there is no need to provide through holes for plating as in conventional products.

[0013] The gate portion of this first component is cut after plating, but because no plating layer is formed on the surface of the first component made of a resin that is difficult to plate, there is no risk of the plating layer peeling off and exposing the nickel in the base plating layer, and the cut portion is not noticeable. Furthermore, because the gate portion of the second component, which is necessary for two-color molding, is cut before plating, a plating layer is also formed on its surface, making the cut portion invisible, resulting in a comb with excellent aesthetics. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing a comb according to a first embodiment. [Figure 2] FIG. 2 is an external view showing an injection-molded first member. [Figure 3] FIG. 1 is a perspective view showing an injection-molded two-color molded body. [Figure 4] FIG. 2 is a central vertical cross-sectional view of an injection-molded two-color molded body. [Figure 5] FIG. 10 is a perspective view showing a state in which a gate portion of a second member has been cut. [Figure 6] FIG. 1 is a block diagram showing a manufacturing process of the comb of the present invention. [Figure 7] FIG. 10 is a perspective view showing a comb according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0015] An embodiment of the present invention will be described below. FIG. 1 is an external view showing a comb according to a first embodiment of the present invention. This comb 10 is a comb-shaped two-color molded body in which a first member 11 is enclosed inside a second member 12. The first member 11 is made of a resin that is difficult to plate, and in this embodiment, PC resin is used. The second member 12 is made of a resin that is easy to plate, and in this embodiment, ABS resin is used. However, other than ABS resin, easily plateable resins such as PP resin, PE resin, PET resin, and acrylic resin can also be used.

[0016] Two-color molding is a resin molding method also known as double molding, in which, for example, a first member 11 is injection molded using a first mold, the first mold is then opened, and the molded first member 11 is moved toward a second mold together with the movable part of the first mold, and the second mold is then closed from the outside, and the second member 12 is injection molded on the outside of the first member. In this way, two-color molding can be used to manufacture molded products that integrate different resins, and in the present invention, a comb-shaped two-color molded product is molded in which the first member 11 is enclosed inside the second member 12. The first member 11 and the second member 12 of this two-color molded product each require an injection molding gate.

[0017] 2 is an external view showing the shape of a first member 11 injection-molded using a first mold. This first member 11 has a gripping portion 13 and comb teeth 14, and a gate portion 15 is provided at one end of the gripping portion 13. As will be described later, this gate portion 15 is used as a hook for plating. Note that the shape of the first member 11 is not necessarily limited to the shape shown in FIG. 2, and in a second embodiment described later, the comb teeth 14 of the first member 11 can be omitted.

[0018] Fig. 3 is a perspective view showing the shape of a two-color molded product in which the second member 12 is injection molded on the outside of the first member 11, and Fig. 4 is a central vertical cross-sectional view thereof. The second member 12 encases the first member 11, but as shown in Fig. 3, the first member 11 is exposed on the upper surface of the gripping portion 13 of the first member 11 and on the side of the outermost comb tooth 17, and a gate portion 15 of the first member 11 is located on the upper end surface of this gripping portion 13. The first member 11 is also exposed on the side surface 19 of the comb tooth 14. Furthermore, a gate portion 18 for injection molding the second member 12 is provided in the center of the upper end of the two-color molded product.

[0019] Since the gate portions 15 and 18 of the two-color molded body shown in Fig. 3 are unnecessary parts for the comb, first the gate portion 18 of the second member 12 is cut off. In the cutting process, the gate portion 18 is cut off and then its surface is smoothed. The state of the second member 12 after the gate portion 18 has been cut off is shown in Fig. 5.

[0020] Next, the gate portion 15 of the first member 11 is used as a hook portion to form a plating layer over the entire surface of the two-color molded body. The plating layer includes an electroless nickel plating layer as a base and a chrome plating layer formed on top of that. Because the outer second member 12 is made of a resin that is easy to plate, a plating layer is formed smoothly even on the surface of the part where the gate portion 18 has been cut, and traces of the cutting process become invisible. As mentioned above, a part of the first member 11 is exposed from the surface of the two-color molded body, but because the first member 11 is made of a resin that is difficult to plate, a plating layer is not formed on the exposed part.

[0021] Next, the gate portion 15 of the first member 11 is cut and smoothed. Because no plating layer is formed on the surface of the first member 11, the cutting process will not peel off the plating layer, and there is no risk of exposing the nickel in the base plating layer. This cut portion will remain on the surface of the comb, but if smoothed, it will be inconspicuous and will not detract from the appearance. In this way, the comb 10 shown in Figure 1 is manufactured.

[0022] The above manufacturing process is summarized in Fig. 6. The plating layer formed on the surface of the second member 12 is not necessarily limited to a chrome plating layer, and for example, a gold plating layer may be further laminated.

[0023] The comb of the present invention manufactured in this way has a plating layer formed on almost the entire surface, including the comb teeth 14, which improves hair smoothness and has the effect of dissipating static electricity generated in the hair. In addition, since the entire comb is made of resin, there is no need to attach members to cover the through holes, which reduces the number of parts and eliminates the risk of parts falling off.

[0024] In the first embodiment described above, the first member 11 is exposed on the side surface 19 of the comb teeth 14. Therefore, if the first member 11 contains a fragrance component, static electricity can be removed by the plated second member 12 on the outer periphery of the comb teeth 14, and the fragrance can be felt every time the hair is combed. Also, by containing silicon microparticles or the like in the first member 11 and bringing it into contact with the hair, it is possible to have a positive effect on the quality of the hair.

[0025] 7, a structure may be adopted in which the first member 11 is not exposed on the side surface 19 of the comb teeth 14. In this case, the shape of the first member 11 can be simplified more than the shape shown in FIG. 2 and the comb teeth 14 can be omitted, thereby reducing the cost of the mold for two-color molding.

[0026] As described above, according to the present invention, it is possible to provide a plated comb that has an excellent appearance without using a lid or metal cover that covers the through-hole. [Explanation of symbols]

[0027] 10 Combs 11 First member 12 Second member 13 Gripping part 14 Comb Teeth 15 Gate portion of first member 17 outermost comb teeth 18 Gate portion of second member 19 Side of comb teeth

Claims

1. The molded article is a comb-shaped two-color molded body in which a first member made of a resin that is difficult to plate is enclosed inside a second member made of a resin that is easy to plate, a plating layer is formed on a surface of the second member, A plated comb, characterized in that a portion of the first member is exposed from the surface of the second member covered with a plating layer.

2. 2. The plated comb according to claim 1, wherein the first member, which is not covered with the plating layer, is exposed on the side of the comb teeth covered with the plating layer.

3. 3. The plated comb according to claim 2, wherein the first member contains a fragrance component.

4. 2. The plated comb according to claim 1, wherein the plating layer comprises an electroless nickel plating layer and a chromium plating layer.

5. 2. The plated comb according to claim 1, wherein the first member is made of PC resin and the second member is made of ABS resin.

6. a first step of producing a comb-shaped two-color molded body in which a first member made of a resin that is difficult to plate is enclosed inside a second member made of a resin that is easy to plate; a second step of cutting a gate portion of a second member of the two-color molded body; a third step of forming a plating layer on the entire surface of the second member of the two-color molded body by using the gate portion of the first member of the two-color molded body as a hook portion; a fourth step of cutting a gate portion of the first member on which no plating layer is formed; A method for manufacturing a plated comb, comprising the steps of:

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