JPH04219300A - Manufacture of patterned article - Google Patents

Abstract

PURPOSE:To simply mass-produce a product having a coating film improved in adhesiveness and enhanced in durability by forming an embossed pattern to an article and providing the coating film to the depressed parts of the embossed pattern of the article and covering the other surface of the article with a plating film. CONSTITUTION:An embossed pattern 12 is applied to the body of an article 11 to apply coating to the embossed surface of the body of the article 11 and the coating film 14 bonded to the surface excepting the depressed parts 13 of the pattern 12 of the body of the article 11 is removed in a semi-cured state and, subsequently, electroplating is applied to the body of the article 11.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] The present invention relates to metal objects such as slider pulls, buttons, or rivets for slide fasteners, and the surface of the object is patterned with figures, letters, marks, etc. on the convex surface by relief. The present invention relates to a method for producing a patterned article in which the patterned article is formed by a concave expression represented by a convex surface or a carved depression, and the concave portions formed between the convex surfaces or the concave portions caused by the concave surfaces are painted.

0002

[Prior Art] For example, taking a metal handle attached to a slider for a slide fastener, FIGS. 10 and 1
1, a pattern 3 is formed by a plurality of concave surfaces 2 carved along concentric circles on the surface of the handle 1, and
A plating film 4 is provided on the entire surface of the handle 1 including the concave surface 2,
While the plating film 4 remains attached to the inside of the concave surface 2, a colored coating layer 5 is provided on the upper surface by injecting paint. Also,
As shown in FIG. 12, as described above, the surface of the handle 1 has a concave surface 2.
A plating film 4 is provided on the inner surface of the concave surface 2, and a colored coating film 6 is provided inside the concave surface 2, overlapping the plating film 4 applied to the inner surface.

0003

[Problems to be Solved by the Invention] The article provided with the colored coating layer 5 shown in FIG. The more the paint is applied, the more time it takes, which is extremely inefficient, and the color tone becomes uneven depending on the amount of paint used.
There is a risk that the paint may protrude from the surface, which may spoil the appearance, and the coloring process is extremely difficult and requires skill. On the other hand, according to the article provided with the colored coating film 6 shown in FIG. 12, it can be manufactured by a mass production method and is advantageous in terms of cost, but the colored coating film 6 provided on the concave surface is thin and the plated film is Since it is placed on the top, it is not reliable in its adhesion and there is a high risk that it will peel off during repeated washing and cleaning. In addition, if the concave surface that expresses the pattern is extremely thin, the concave surface is further narrowed by the plating film, so the thickness of the colored coating film 6 becomes thinner, and the color tone of the pattern is different from the color tone of other thick films, so the sharpness is reduced. It had drawbacks such as a lack of style and a lack of style.

The object of the present invention is to solve the above-mentioned problems and provide a method for manufacturing a patterned article that is expressed with a clear pattern, has good paint film adhesion, and is excellent in durability.

[0005]

[Means for Solving the Problems] The method according to the present invention includes an article body forming step, a painting step, a paint film removal step, and a plating step. In the article body forming step, an article body is formed that displays a pattern such as a figure, a character, a mark, etc. on a convex or concave surface. In the painting step, a synthetic resin paint is applied to the pattern-displayed surface of the article body. In the paint film removal step, only the paint film that has adhered to the surface other than the depressed portions caused by displaying the pattern among the paint films that have adhered during the painting process is removed in a semi-hardened state. In the plating process, electroplating is applied to the article body formed in each of the above steps, and the desired article is manufactured through each of the above steps.

[0006]

[Example] To explain this invention in detail, in order to manufacture a target article, there are a step of molding the article body 11 which is the base thereof, a step of applying the coating, a step of removing the coating film,
and those obtained by each step of the plating process. First, the molding process is performed by press molding, casting, die-casting, or injection molding of a metal material, and at the same time as molding, a pattern 12 expressed by an embossed convex surface or a depressed concave surface is formed.

[0007] In the coating process, the article body 11 is spray coated while rotating in a rotating barrel or the like, or by electrodeposition or electrostatic coating. The paint used is a synthetic resin such as acrylic, urethane, epoxy, or aminoalkyd, and the film thickness is approximately 5 to 20 microns, and the next step is carried out while it is in a semi-cured state.

[0008] In the next paint film removal process, the paint film 14 is removed from the entire surface of the article body 11 to which the paint film 14 has adhered from the previous painting process, except for the depressions 13 caused by the display of the pattern 12. Only the coating film 14 that is coated is removed, and the base material of the article body 11 is exposed on the surface. This process can be performed using a polishing machine such as a barrel, and in this case, the abrasive grains of polishing media that are larger than the recessed portion 13 are used.

Finally, the article body 11 obtained in the above process is electroplated with copper, nickel, brass, etc. depending on the finish. At this time, the paint film 14 has adhered to the inner surface of the depressed portion 13, making it impossible to conduct electricity.
Only the exposed surface of the substrate other than the coating film 14 is plated.

The article molded as described above is, for example, a pull 7 of a slider 6 for a slide fastener, as shown in FIGS. 1 and 2, and has a pattern 12 of concentric concave surfaces formed on its surface. , a product in which a coating film 14 is directly attached to the inner circumferential surface of a depression 13 representing a pattern 12 on the substrate of the article body 11, and a plating film 15 is attached to the surface of the article body 11 other than the depression 13. becomes.

Further, the examples shown in FIGS. 3 to 5 are buttons 8 for clothing, etc., and are provided with patterns 12 represented by embossed characters. The product is a product to which the paint film 14 is directly attached and the remaining surface is covered with the plating film 15.

The example shown in FIG.
A pattern 12 representing a mark including characters on a convex surface is provided on the head surface of the head. In this case, as in the previous example, a paint film 14 is attached to the inner surface of the recessed part 13 between the convex surfaces, and the remaining surface is coated with a pattern 12. A plating film 15 is attached thereto.

[0013]

Effects of the Invention According to the method for manufacturing a patterned article according to the present invention, the article body formed with a convex or concave surface expressing a pattern is coated, and the coating adheres to the article body except for the recessed portion where the pattern is displayed. After removing the film, electroplating is applied to produce a product, and the paint film applied to the recessed areas that represent the pattern of the product adheres directly to the base of the product, resulting in extremely poor adhesion of the paint film. There is no risk of peeling off during cleaning, etc., and durability is improved. Moreover, since the paint film on unnecessary parts is removed after painting, it is possible to paint the sunken parts that represent the pattern along with the unnecessary parts during painting, so even if the sunken parts are thin and narrow, the paint can be applied sufficiently. , and can be coated uniformly over the entire surface. In addition, since electroplating is performed after removing unnecessary paint film, the parts to which the paint will adhere are not plated and are finished as they are, ensuring that the pattern expressed is three-dimensional and clearly displayed. become able to.

[Brief explanation of the drawing]

FIG. 1 shows the main parts of a patterned article according to the present invention, and in particular is an enlarged sectional view taken along the line 1--1 in FIG. 2.

FIG. 2 is a front view showing the slider of the slide fastener.

FIG. 3 is a front view of the button.

4 is an enlarged cross-sectional view taken along the line lV-lV in FIG. 3; FIG.

FIG. 5 is a cross-sectional view showing a further enlarged part of FIG. 4;

FIG. 6 is an exploded perspective view of a rivet and its bar member.

FIG. 7 is a sectional view showing a state in which the rivet is attached to clothing.

FIG. 8 is a front view showing the bar member.

FIG. 9 is a cross-sectional view of the bar member.

FIG. 10 is a perspective view showing a conventional handle.

11 is a sectional view showing the structure of the pattern shown in FIG. 10. FIG.

12 is a sectional view showing still another structure of the pattern shown in FIG. 10. FIG.

[Explanation of symbols]

11　Goods body 12 Pattern 13. Depression 14 Paint film 15 Plating film

Claims (1)

[Claims] [Claim 1] An article body (11) in which a pattern (12) of figures, characters, marks, etc. is displayed and formed by unevenness.
The molding process and the pattern (1) of the molded article body (11)
2) A painting process in which a synthetic resin paint is applied to the surface displaying the pattern (12), and a depression that displays the pattern (12) in a semi-cured state of the paint film (14) that has adhered to the article body (11) in the painting process. a paint film removal step in which only the paint film (14) adhering to the surface other than the portion (13) is removed; and a plating step in which the article body (11) formed in each of the above steps is electroplated. A method for manufacturing a patterned article, characterized by comprising: