JP2012233235A - Decoratively plated article, and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plating method that is excellent in productivity and can readily manufacture a decoratively plated article even from a workpiece having a complicated shape.SOLUTION: The plating method for applying a decorative electroplating to a workpiece includes: a first plating step P2 of forming a first plating layer having a design color (first color) on the workpiece; a masking step P3 of covering the first plating layer formed in the first plating step with a designed masking sheet; a second plating step P4 of forming a second plating layer having a background color (second color) on the masking sheet and all; and a masking removing step P5 of removing the masking sheet.

Description

  The present invention relates to a decorative plated product in which a decorative electroplating layer is formed on a material, and a method for manufacturing the decorative plated product.

  Conventionally, there has been an etching process for producing a decorative article by decorating a metal material (Patent Document 1). In Patent Document 1, an oxide film is formed on the surface of a material, and a mask with a predetermined pattern is masked on the surface of the oxide film. After performing an etching process, the mask is removed and the mask is removed. A pattern is formed by coloring the portion (oxide film) covered with.

JP 2010-216898 A

  However, in the method using etching as in Patent Document 1, five steps of an oxidation step, a masking step, an etching step, a masking removal step, and a coloring step are required, and the man-hour increases and the material is curved. If the shape is complicated, it is difficult to manufacture a decorative product.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a plating method that can easily produce a decorative plated product even if the material has a complicated shape and excellent productivity.

  In order to achieve the above object, a decorative plating method according to the present invention is a plating method in which a decorative electroplating is applied to a material, and a first plating step of forming a first color plating layer on the material; A masking step of covering the plating layer formed in the first plating step with a design masking sheet, a second plating step of forming a second color plating layer from the masking sheet, and removing the masking sheet And a masking removal process. Here, “design” refers to a design such as a picture, a character, or a pattern.

  According to this configuration, the number of manufacturing steps is four, and two of them are the same plating step, so that productivity is high. Also, for example, the design is formed by the first color plating layer that is the design color and the second color plating layer that is the background color, so even if the material has a complicated shape, it is easy to produce decorative plated products can do. In this way, decoration is performed by overlaying metal on the material by electroplating, so it is possible to express the design in various colors such as colors that use the flow of electricity, the original color of the metal, processed colors, etc. it can.

  In the present invention, the first plating step preferably includes an electrolytic treatment step and a main plating step, and the second plating step preferably includes a main plating step. Here, the “electrolytic treatment step” refers to electrolytic cleaning with acid or alkali, and does not include degreasing with a solvent, ultrasonic waves, etc., alkaline degreasing, surface activation with acid, or the like. In this case, it is preferable to use a polyvinyl chloride sheet as the masking sheet. According to this configuration, since the surface of the plating layer formed in the first plating step is clean, the electrolytic treatment step can be omitted in the second plating step. When masking the material directly, a special masking member is required to prevent the masking member from being peeled off in such an electrolytic treatment process. However, since the electrolytic treatment process can be omitted, an inexpensive polyvinyl chloride sheet can be used as the masking sheet, and the production cost is reduced. Moreover, since a sheet made of polyvinyl chloride is easy to process, an arbitrary design can be easily created from data.

  A decorative plating product according to the present invention is a decorative plating product in which a decorative electroplating layer is formed on a material, and the first color plating layer formed on the material and the first color plating layer And a formed second color plating layer. According to this configuration, for example, the design is formed by the plating layer of the first color that is the design color and the plating layer of the second color that is the background color, so even if the material is a complicated curved surface shape, Decorative plated products can be manufactured.

  According to the decorative plating method or the decorative plated product of the present invention, the manufacturing process may be performed in four steps, and the two steps are the same plating step, so that the productivity is high. In addition, since the design is formed by the first color plating layer and the second color plating layer, a decorative plated product can be easily manufactured even if the material has a complicated shape. In this way, decoration is performed by overlaying metal on the material by electroplating, so it is possible to express the design in various colors such as colors that use the flow of electricity, the original color of the metal, processed colors, etc. it can.

(A) is a top view which shows the decorative plating goods which concern on 1st Embodiment of this invention, (b) is the IB-IB sectional view taken on the line of (a). It is a flowchart which shows the manufacturing process of the decorative plating product. (A) is a top view which shows the said raw material, (b) is the IIIB-IIIB sectional view taken on the line of (a). (A) is a top view which shows the state after a 1st plating process, (b) is the IVB-IVB sectional view taken on the line of (a). (A) is a top view which shows the state after a masking process, (b) is the VB-VB sectional view taken on the line of (a). (A) is a top view which shows the state after a 2nd plating process, (b) is the VIB-VIB sectional view taken on the line of (a). (A) is a top view which shows the state after a masking removal process, (b) is the VIIB-VIIB sectional view taken on the line of (a). (A) is a top view which shows the state after finish coating, (b) is the VIIIB-VIIIB sectional view taken on the line of (a). It is a flowchart which shows the flow of a 1st plating process. It is a flowchart which shows the flow of a 2nd plating process. (A) is a top view which shows the decorative plating goods which concern on 2nd Embodiment of this invention, (b) is the XIB-XIB sectional view taken on the line of (a).

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a decorative plated product 1 according to the first embodiment of the present invention. As shown in FIG. 1A, the decorative plated product 1 has a background 2 and a design 4 on the surface. Background 2 and design 4 are composed of different colors. More specifically, as shown in FIG. 2B, the decorative plated product 1 includes a first plating layer 8 having a design color, which is a first color, formed on a material 6 made of metal, and a first plating layer. 8 and a second plating layer 10 having a background color which is a second color. The first plating layer 8 and the second plating layer 10 are formed by electroplating. In this embodiment, a transparent finish coating 12 is applied to the entire surface in order to protect the plating layers 8 and 10.

  As shown in FIG. 2, the plating method of the decorative plated product 1 includes a preparation step P <b> 1 for preparing and processing a material 6 such as cutting and deburring, and a first plating layer having a design color (first color) on the material 6. The first plating step P2 for forming 8, the masking step P3 for covering the first plating layer 8 formed in the first plating step P2 with the design masking sheet 14, and the background color ( A second plating step P4 for forming the second plating layer 10 of the second color, a masking removal step P5 for removing the masking sheet 14, and a finishing step P6 for applying the finish coating 12 to the entire surface.

Below, each process P1-P5 is demonstrated using FIGS.
[Preparation process]
First, a material 6 shown in FIGS. 3A and 3B is prepared. In the present embodiment, the material 6 is an iron-based metal, but is not limited thereto, and may be, for example, a stainless steel, a copper / copper alloy, or the like. If the material 6 needs to be pressed, drilled, etc., these are performed.

[First plating step]
Next, as shown in FIGS. 4A and 4B, a first plating layer 8 is formed on the surface of the material 6. The 1st plating layer 8 should just comprise the color (design color) of the design 4, and is not limited to a single layer, A multilayer may be sufficient. In the present embodiment, a four-layer structure of nickel strike plating, copper sulfate plating, nickel plating, and brass plating is formed from the bottom. In the case of multiple layers, the plating color of the uppermost layer constitutes the design color. For example, the design color is a brass plating color (gold). As plating that constitutes the design color in the first plating layer 8, there are plating of nickel, black nickel, copper, gold, pink gold, and the like in addition to brass plating. Details of the first plating step will be described later.

[Masking process]
Subsequently, as shown in FIGS. 5A and 5B, a masking sheet 14 with a design is placed on the first plating layer 8. In the present embodiment, a polyvinyl chloride sheet is used as the masking sheet 14 and is attached to the first plating layer 8 by an adhesive means such as glue. The bonding means is not limited to glue, but is preferably one that can easily remove the masking sheet 14 later. The masking sheet 14 may be other than a vinyl chloride sheet, but an easily available and inexpensive sheet such as a vinyl chloride sheet is preferable.

[Second plating process]
Next, as shown in FIGS. 6A and 6B, the second plating layer 10 is formed on the surface of the masking sheet 14 to constitute the background 2. The second plating layer 10 constitutes the color of background 2 (background color). In the present embodiment, black nickel plating is used as the second plating layer 10. As plating that constitutes the background color in the second plating layer 10, there are plating of gold, pink gold, copper bronze, white bronze, brass bronze, etc., for example, in addition to black nickel plating. Details of the second plating step will be described later.

[Masking removal process]
Subsequently, as shown in FIGS. 7A and 7B, the masking sheet 14 is removed. As a result, background 2 and design 4 appear. In the present embodiment, the masking sheet 14 is removed by immersing the material 6 on which the masking sheet 14 is attached in a solvent and dissolving the glue, but the removal means for the masking sheet 14 is not limited to this.

[Finishing process]
Finally, as shown in FIGS. 8A and 8B, a transparent finish coating 12 is applied to the entire surface in order to protect the plating layers 8 and 10. Thereby, the decorative plating product 1 is completed. In the present embodiment, the finish coating 12 is performed using an acrylic paint, but is not limited thereto.

  Next, the details of the first plating step P2 and the second plating step P4 of FIG. 2 will be described using FIG. 9 and FIG.

  FIG. 9 is a flowchart showing the first plating step. In the first plating step, first, oil adhering to the surface of the material 6 is removed by a solvent, alkali, or the like (degreasing step S1). Next, it is immersed in an acid such as hydrochloric acid or sulfuric acid to remove rust, scale, smut, etc. (pickling step S2). In the pickling step S2, electrolytic pickling may be performed. Subsequently, electrolytic cleaning with alkali is performed to remove a small amount of oil and smut (finish cleaning step S3). These pickling step S2 and finish cleaning step S3 constitute an electrolytic treatment process. Next, it is immersed in an acid such as hydrochloric acid to remove the oxide film produced in each step S1 to S3 (activation step S4).

  Finally, a first plating layer constituting the design color is formed (plating main process S5). As described above, in the plating main process S5 of the present embodiment, plating is performed in the order of nickel strike plating, copper sulfate plating, nickel plating, and brass plating. The formation of each plating layer in the main plating step S5 is performed by electroplating. Strike plating is performed in order to improve the adhesion of plating to be performed later. The type of strike plating varies depending on the material 6, and in addition to nickel strike, gold strike, silver strike, copper strike, or the like is used.

  FIG. 10 is a flowchart showing the second plating step. Even in the second plating step, first, oil adhering to the surface is removed by a solvent, alkali, or the like (degreasing step S11). Next, the surface is activated by removing the oxide film generated in the degreasing step S11 by immersing in an acid such as hydrochloric acid (activation step S12). Thus, the electrolytic treatment process is omitted in the second plating process. Finally, a second plating layer constituting the background color is formed (plating main process S13). As described above, black nickel plating is performed in the main plating step S13 of the present embodiment. The formation of the plating layer in the main plating step S13 is also performed by electroplating.

  In the above configuration, as shown in FIG. 2, the main manufacturing process excluding the preparation process P1 and the finishing process P6 is four processes, and two processes are the same plating process, so the productivity is high. As shown in FIGS. 1A and 1B, since the design 4 is formed by the first plating layer 8 having the design color and the second plating layer 10 having the background color, the material 6 has a complicated shape. In addition, the decorative plated product 1 can be easily manufactured. In this way, decoration is applied by overlaying metal on the material 6 by electroplating, so design 4 in various colors such as a color utilizing the flow of electricity, the original color of the metal, and the processed color. Can be expressed.

  Since the surface of the plating layer formed in the first plating step P2 of FIG. 9 is clean, the electrolytic treatment step can be omitted in the second plating step P4 as shown in FIG. When the masking is directly performed on the material, a special masking member is required to prevent the masking member from being peeled off in the electrolytic treatment process. However, by omitting the electrolytic treatment step in this way, an inexpensive polyvinyl chloride sheet can be used as the masking sheet 14 shown in FIGS. 5A and 5B, and the production cost is reduced. . In addition, since a sheet made of polyvinyl chloride is easy to process, an arbitrary design can be easily created from data provided by the user.

  FIG. 11 shows a decorative plated product 1A according to the second embodiment of the present invention. As shown in FIG. 2B, in the decorative plated product 1A of the second embodiment, the second plating layer 10A constituting the background 2 is formed thick, and a large step 20 is formed between the background 2 and the design 4. This is different from the decorative plated product 1 of the first embodiment. Such a level | step difference 20 is implement | achieved by forming 10 A of 2nd plating layers in a multilayer in the 2nd plating process P4. Specifically, the second plating layer 10 of the first embodiment is a single layer of black nickel plating and has a thickness of about 0.5 μm, whereas the second plating layer 10A of the second embodiment is a nickel strike. Three layers of plating, copper sulfate plating, and nickel plating are formed. In particular, copper sulfate plating and nickel plating are formed thick, and the thickness is about 15 μm. Other structures and manufacturing methods are the same as those in the first embodiment.

  According to the second embodiment, a step 20 is formed on the background 2 and the design 4 of the surface of the decorative plated product 1A, and such a step 20 is configured by overlapping the plating layers 8 and 10A. Products with an embossed texture are easily constructed.

  As described above, the preferred embodiment of the present invention has been described with reference to the drawings, but various additions, modifications, or deletions can be made without departing from the spirit of the present invention. Included within the scope of the invention. For example, in each of the above embodiments, the first color is used as the design color and the second color is used as the background color. However, the present invention is not limited to this, and the first color is exposed as the background color. In place of the masking sheet 14), the surface of the second plating layer 10 excluding the masking sheet 14 may be covered with a masking sheet, and a plating layer of the second color may be formed as a design color thereon. In the second plating step, when the second plating layer 10 constituting the background 2 is formed, the whole is not soaked in the plating bath, but is partially soaked or repeatedly soaked and pulled up to the plating bath. In this way, it is possible to add a gradation with the flow of electricity. Therefore, such a thing is also included in the scope of the present invention.

1, 1A Decorative plating product.
6 Material 8 First plating layer (first color plating layer)
10, 10A Second plating layer (second color plating layer)
14 masking sheet P2 1st plating process P3 masking process P4 2nd plating process,
P5 Masking removal step S2, S3 Electrolytic treatment step S5 Plating main step S13 in the first plating step Plating main step in the second plating step

Claims (4)

A plating method for applying decorative electroplating to a material,
A first plating step of forming a first color plating layer on the material;
A masking step of covering the plating layer formed in the first plating step with a masking sheet having a design;
A second plating step of forming a second color plating layer from above the masking sheet;
A masking removal step of removing the masking sheet;
A decorative plating method comprising: In Claim 1, the said 1st plating process has an electrolytic treatment process and a plating main process,
The second plating step is a decorative plating method having a main plating step.   3. The decorative plating method according to claim 2, wherein the masking sheet is a polyvinyl chloride sheet. A decorative plating product in which a decorative electroplating layer is formed on the material,
A first color plating layer formed on the material;
A second color plating layer formed on the first color plating layer;
Decorative plating product with

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