JP2001010296A - Decorator and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a decorator to be applied to a barrel of a writing instrument having a stereoscopic protrusion pattern, a cosmetics container or the like without using a resist film or a resist releasing chlorine solvent, by forming a protrusion pattern made of a conductive resin between a conductive base material and a metal film formed on the material. SOLUTION: A protrusion pattern 2 made of a conductive resin is formed on a surface of a conductive base material 1, and a metal film 3 is formed on the surfaces to constitute the decorator. In the case of manufacturing the decorator, first, the material 1 is degreased, and a chromate film or the like is formed as needed, and then dried. Then, the pattern 2 is screen printed on the material 1 by using a screen ink containing a conductive resin, dried, and cured to form the pattern 2 made of the resin on the material 1. Then, a metal layer is formed on the material 1 by a method such as plating, vapor depositing or the like, thereby completing the decorator. Thus, a stereoscopic decorator is obtained without generating an environmental contamination.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative body having a convex pattern formed on the surface thereof and a method for manufacturing the same, which is suitable for a shaft of a writing instrument or an exterior of a cosmetic container.

[0002]

2. Description of the Related Art When a convex metal pattern such as a character or a pattern is formed on the surface of a conductive base material such as brass, iron, or aluminum, a three-dimensional pattern excellent in decorative effect can be formed. It is applied to various fields such as name plates. Conventionally, as a method of forming a convex pattern on a metal, after forming a resist film having high electrical insulation other than the portion where the convex pattern is formed by a screen printing method, nickel and copper are coated by an electroplating method to form a convex pattern. There has been known a method in which a pattern is formed, the resist is peeled off, bright nickel plating is performed again, and if necessary, chromium plating or plating of a noble metal such as gold or silver is performed.

[0003]

When a convex pattern is formed by a plating method using a resist film, in the case of a writing instrument shaft or a cosmetic container, if a thick plating film is formed on the shaft or the inner surface of the container, there is a problem in assembling the product. Therefore, it is necessary to form a resist film on the shaft and the inner surface of the container so that the plating film is not formed, and it is difficult to form the resist film on the inner surface when the shape and the inner diameter of the shaft are small. Further, when a three-dimensional pattern is formed, it is necessary to increase the thickness of the plating film, and there has been a problem that peeling of the resist film occurs when plating is performed for a long time to obtain a thick plating film. Furthermore, although the exfoliation of the resist film has been chlorinated solvents are generally used, the use of chlorinated solvents is been restricted from the problem of environmental pollution, a new pattern forming method without using the resist film It has been demanded.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of these problems, and has been made in view of the above circumstances, and is intended to provide a decorative body having a three-dimensional convex pattern formed without using a resist film or a chlorine-based solvent for stripping the resist. The first gist is that at least the surface is made of a conductive resin between a base material having conductivity and a metal film formed on the conductive base material A decorative body with a convex pattern formed,
The second aspect is that a convex pattern made of a conductive resin is formed on a substrate having at least a surface having conductivity, and a metal is coated on the convex pattern made of the conductive resin and the substrate having at least a surface having conductivity. And a method for manufacturing a decorative body.

Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view of a decorative body of the present invention. Reference numeral 1 denotes a conductive base material, and a convex pattern 2 made of a conductive resin is formed on the surface of the conductive base material 1. Substrate 1
And a metal film 3 on the surface of the convex pattern 2 made of conductive resin.
Are formed.

The conductive substrate 1 is made of brass or zinc or its alloy, iron and its alloy, aluminum and its alloy,
Magnesium and its alloys, titanium and its alloys,
A metal material such as stainless steel is used. A plating film of nickel, copper, zinc or the like or a conductive resin film may be formed on these metal surfaces in advance by electroplating or electroless plating. The conductive resin film is made of resin such as acrylic resin, urethane resin, polyester resin, epoxy resin, vinyl chloride resin, carbon black or graphite,
What is necessary is that it is filled with metal fine particles such as gold, silver and copper and has conductivity.

Next, the convex pattern 2 made of a conductive resin will be described. The conductive resin forming the convex pattern 2 is phenol resin, acrylic resin, urethane resin,
A resin such as a polyester resin, an epoxy resin, and a vinyl chloride resin filled with metal fine particles such as carbon black, graphite, gold, silver, and copper may have conductivity. The convex pattern 2 made of a conductive resin may be formed by a screen printing method. Further, in order to enhance the adhesion of the convex pattern 2 made of a conductive resin, it is more preferable to form an oxide film, a chromate film, or a black chrome plating layer on the surface of the conductive substrate 1 chemically.

Further, the metal film 3 will be described in detail. The metal film 3 may be formed by electroless plating, electroplating, or the like. Specifically, nickel, copper, iron, gold, silver, tin-nickel alloy, tin-copper alloy, tin-zinc alloy, gold, silver , Palladium, rhodium, platinum and the like. One or two or more of these metals are formed in a multilayer.

Next, a method for manufacturing a decorative body will be described.
The substrate 1 is degreased by a known method, and if necessary, a chromate film or a black chromium plating film is formed and dried. Thereafter, a convex pattern is printed on the base material by a screen printing method using a screen ink containing a conductive resin,
Thereafter, by drying and curing, a convex pattern made of a conductive resin is formed on the substrate. Next, a metal layer is formed on the substrate on which the convex pattern has been formed by a known method such as plating or vapor deposition, so that the decorative body of the present invention can be obtained.

FIG. 2 shows an example in which the substrate is made of a resin. In FIG. 2, a conductive film 4 is formed on the surface of a substrate 1. The substrate 1 is made of a resin, and examples thereof include AS, ABS, polycarbonate, polyethylene, polypropylene, polyethylene terephthalate, acrylic, polyester, and nylon. The conductive film 4 is made of a metal such as nickel, copper, zinc, tin, gold, or silver, a resin such as an acrylic resin, a urethane resin, a polyester resin, an epoxy resin, or a vinyl chloride resin, and carbon black, graphite, gold,
A conductive resin film filled with metal fine particles such as silver and copper can be used.

[0011]

According to the present invention, a three-dimensional decorative body can be provided by forming a convex pattern made of a conductive resin on a substrate having at least a surface having conductivity, and then forming a metal film. In addition, since a convex pattern can be formed by forming a conductive film on a non-conductive resin, since a resist film or a chlorine-based solvent for removing the resist film is not used during the process, a decorative body that is environmentally friendly to the environment Can be provided.

[0012]

EXAMPLE 1 A cylindrical brass pipe having an outer diameter of 15 mm × 50 mm was used as a base material. The base material was buff-polished, and then 5 μm of the latter half bright nickel plating of alkali degreasing / acid activity was formed. After washing and drying, a convex pattern is printed by a screen printing method using a conductive ink 581SS (manufactured by Acheson Japan), dried at 150 ° C. for 30 minutes and dried to a height of 20 μm. A convex pattern made of resin was formed. next,
After alkali degreasing and acid activity, a bright nickel plating is formed to a thickness of 5 μm, and a gold plating is further formed to a thickness of 0.5 μm to form a metal film. Was obtained.

Example 2 A cylindrical stainless steel pipe having an outer diameter of 15 mm × 50 mm was used as a base material. The substrate was buffed and then dried after alkaline degreasing and acid activity. Conductive ink R-806
Convex pattern printing by screen printing method (manufactured by Tokurika Chemical Laboratory Co., Ltd.) and drying at 150 ° C. for 30 minutes to form a convex pattern made of a conductive resin having a height of 50 μm. did. Next, after performing alkali degreasing and acid activity, a strike nickel is applied, bright nickel is sequentially applied to form a nickel plating of 5 μm, and further, gold plating is formed to a thickness of 0.5 μm to form a metal film. A decorative body having a matte convex gold pattern formed on a shiny gold base was obtained.

Example 3 A cylindrical brass pipe having an outer diameter of 15 mm × 50 mm was used as a base material. The base material was blasted, and then a bright nickel plating of 5 μm in the latter half of alkali degreasing / acid activity was formed. After washing and drying, convex pattern printing was performed by a screen printing method using a conductive ink PR-800 (manufactured by Acheson Japan Co., Ltd.), dried at 150 ° C. for 30 minutes, and dried at 80 μm.
A convex pattern made of a conductive resin having a height of 5 mm was formed. Next, after performing alkali degreasing and acid activity, a bright nickel plating is formed to a thickness of 5 μm, and a palladium plating is formed to a thickness of 0.5 μm to form a metal film. A decorative body having a silver pattern formed thereon was obtained.

Example 4 A cylindrical brass pipe having an outer diameter of 15 mm × 50 mm was used as a base material. The base material is degreased with a solvent, spray-coated with a thermosetting acrylic resin paint filled with carbon black and graphite at 60% of the resin solid content, at 160 ° C. for 20 minutes. Dried. Then AC
P-051 (produced by Asahi Chemical Laboratory Co., Ltd.) was used to form a convex pattern by screen printing using a conductive ink.
Drying was performed at 0 ° C. for 30 minutes to form a convex pattern made of a conductive resin having a height of 30 μm. Next, after performing alkali degreasing and acid activity, bright nickel plating was performed at 5 μm.
Then, a palladium plating was formed to a thickness of 0.5 μm to form a metal film, thereby obtaining a decorative body in which a convex semi-gloss silver pattern was formed on a matte silver background.

Example 5 A cylindrical ABS pipe having an outer diameter of 15 mm × 50 mm was used as a base material. Etching was performed with a mixed acid solution of chromic acid and sulfuric acid, followed by treatment with a palladium catalyst, and electroless nickel plating was formed to a thickness of 1 μm. Thereafter, convex pattern printing was performed by a screen printing method using a conductive ink in which carbon black and graphite were filled with 80% of the resin solid content in a commercially available two-part urethane ink, and the resultant was printed at 70.degree. After drying under the conditions of a minute, a convex pattern made of a conductive resin having a height of 50 μm was formed. Next, after performing alkali degreasing and acid activity, a bright nickel plating is formed to a thickness of 5 μm, and a palladium plating is formed to a thickness of 0.5 μm to form a metal film. A decorative body having a silver pattern formed thereon was obtained.

Example 6 A cylindrical ABS pipe having an outer diameter of 15 mm × 50 mm was used as a base material. The two-part curable urethane resin paint was spray-coated using a paint in which silver particles were filled at 80% of the resin solid content, and dried at 70 ° C. for 30 minutes. Thereafter, a convex pattern is printed by a screen printing method using a conductive ink obtained by filling a commercially available two-part urethane ink with carbon black and graphite at 80% of the resin solid content, and dried at 70 ° C. for 30 minutes. A convex pattern made of a conductive resin having a height of 50 μm was formed. Next, after performing alkali degreasing and acid activity, bright nickel plating was formed to 5 μm, and palladium plating was further formed to 0.5 μm.
A metal film was formed by the formation, and a decorative body in which a convex semi-gloss silver pattern was formed on a matte silver background was obtained.

[0018]

According to the decorative body obtained by the present invention, a three-dimensional convex pattern can be easily formed without using a resist film and a solvent for removing the resist. It can be used in various fields such as.

[Brief description of the drawings]

FIG. 1 is a diagram schematically showing a cross section of a decorative body of the present invention.

FIG. 2 is a diagram schematically showing a cross section of another example of the present invention.

[Explanation of symbols]

 Reference Signs List 1 base material 2 convex pattern made of conductive resin 3 metal layer 4 conductive resin layer

Claims (2)

[Claims] 1. A decorative body in which a convex pattern made of a conductive resin is formed between a base material having at least a surface having conductivity and a metal film formed on the conductive base material. 2. A method according to claim 1, wherein a convex pattern made of a conductive resin is formed on a substrate having at least a surface having conductivity, and a metal is coated on the convex pattern made of the conductive resin and the substrate having at least a surface having conductivity. A method for manufacturing a decorative body.