JPH01123799A - Decorating and manufacture thereof - Google Patents

Abstract

PURPOSE: To enhance decorative effects and durability by interposing an oxide coat layer between a metallic base material and a pattern part, and interposing a release plated layer between the metallic base material and the oxide coat layer, and further, forming a plated layer on the non-pattern part of the base material. CONSTITUTION: A release plated layer 6 is formed on the surface of a metallic base material 1 using a plating process such as electroplating or electroless plating, and further, an oxide coat layer 2 is formed on the surface of the release plated layer 6 using a chemical treatment, e.g. chromate treatment, chemical process or the like, or an electrochemical treatment e.g. black chromium plating, black nickel plating or the like. In addition, any appropriate pattern is printed on the oxide coat layer 2 by screen printing, and the oxide coat layer 2' and the release plated layer 6' formed on a non-pattern part where the screen printing is not applied are removed by soaking the layers 2', 6' into a non-erosive acidic or alkaline solution which does not erode a base material 1 such as of chromatic acid, hydrochloric acid, nitric acid, sodium hydroxide. Next, a plated layer 5 is formed on the non-pattern part 4 by plating process such as electroplating or electroless plating.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a decorative body having a metallic luster with a high decorative effect, excellent durability, and forming a clear pattern on a base material.

[Prior art and its problems] Conventionally, methods such as surface treatment of articles have been used as a means to improve the decorative effect of decorative articles such as writing utensil shafts, cosmetic containers, watch supplies, etc. The value of the product is greatly affected, and the consumer's desire to purchase is also greatly affected.

This type of conventional surface treatment method can be roughly divided into: (1) A plating layer is provided on a base material, and a pattern portion is provided on the plating layer by printing.

(2) A plating layer is provided on a base material, a clear coating layer is provided on the plating layer, and a pattern portion is provided on the clear coating layer by printing.

(2) A plating layer is provided on a base material, a clear coating layer is provided on the plating layer, a pattern is provided on the clear coating layer by printing, and a clear coating layer is provided on the pattern.

■A fill-in method in which recesses are formed on the surface of the base material by etching, etc., and ink, etc. is poured into the recesses.

These problems are known, such as (1) problems such as poor adhesion between the fitting layer and printing and poor durability; (2) problems such as difficulty in obtaining metallic luster by applying a clear coating on the fitting layer; In case (2), there was a problem that the sharpness of the pattern decreased.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned problems, and its gist is as follows: A decorative body comprising a film layer, a peeling plating layer interposed between the metal base material and the oxide film layer, and a plating layer provided on a non-patterned part of the base material, and a metal Forming a peeling plating layer on the base material by plating, forming an oxide film layer on the plating layer by a chemical or electrochemical method,
Thereafter, a pattern part is formed by screen printing, the oxide film layer and the peeling plating layer are removed from the non-pattern part, and then the non-pattern part is plated.

The present invention will be described in detail below with reference to the drawings.

Reference numeral 1 indicates a metal base material such as metal such as iron, copper, aluminum, zinc, or an alloy thereof.

The metal base material 1 may be one in which a metal film is provided on ceramics, glass, or the like by vacuum deposition, sputtering, ion blasting, or the like.

Furthermore, on the metal base material, if necessary,
Well-known electroplating, electroless plating, etc. are applied.

The pattern part 3 by screen printing is Seiko 100.
0, 1300, 1690, 2500 series, 5
G160, Pro Steel #400, Pro Steel #1300, Pro Steel #500 (all manufactured by Seiko Advance ■), SS
-25,000, 35,000 (more than that, Toyo Ink ■
Using a well-known screen printing ink such as
It can be obtained by printing an appropriate pattern such as letters.

From the viewpoint of adhesion to the oxide film layer 2 and chemical resistance, it is more preferable to use an epoxy screen printing ink or an acrylic screen printing ink.

Further, it is preferable to use a screen printing ink made of an epoxy-based, acrylic-based, urethane-based, or polyester-based resin, since the pattern portion 6 can be obtained with high corrosion resistance against acid or alkaline solutions.

The oxide film layer 2 corresponding to the pattern portion 3 obtained in this way has a porous surface, exhibits hydrophilicity, and is treated by chemical methods such as chromate treatment, chemical conversion treatment, etc., or by electrochemical treatment. It can be obtained by various methods such as black chromium plating, black nickel plating, etc.

A peeling plating WJ6 is interposed between the metal base material 1 and the oxide film layer 2, and the peeling plating layer 6 is obtained by a plating process such as electroplating or electroless plating. Any material may be used as long as it can be dissolved in an acid or alkaline solution that does not corrode the metal base material 1 used or the electroplating, electroless plating, etc. appropriately provided on the metal base material, such as Cr, Zn, Metals or alloys such as Cu, Cd, A1, etc. are used as appropriate.

The layer thickness of the peeling plating layer 6 is preferably 0.1 to 10.0 μm when used for forming a fine pattern.

The plating M5 provided on the non-pattern portion 4 is electroplating,
It is provided by a plating method such as electroless plating.

Furthermore, if necessary, a known clear coating or the like may be applied to the surface of the obtained decorative body.

Next, the manufacturing method of the present invention will be described in detail.

A peeling plating layer 6 is provided on the surface of the metal base material 1 by a plating process such as electroplating or electroless plating, and the peeling plating layer 6 is subjected to chemical treatment such as chromate treatment,
Provide an oxide film M2 by chemical conversion treatment or electrochemical treatment such as black chrome plating, black nickel plating, etc.
A suitable pattern is printed on the oxide film layer 2 by screen printing, and the oxide film layer 2' and release plating [6' in the non-patterned part 4 where screen printing is not performed are treated with chromic acid, hydrochloric acid, nitric acid, After removing the base material 1 such as sodium hydroxide by immersing it in a non-corrosive acid or alkaline solution, a plating layer 5 is provided on the non-patterned portion 4 by a plating method such as electroplating or electroless plating. be.

[Function] According to the present invention, by providing the pattern portion by screen printing, a pattern with clear details can be obtained, and an oxide film layer having a porous surface is provided between the base material and the pattern portion. As a result, the oxide film layer exhibits hydrophilicity, and the anchor effect improves the adhesion to the pattern portion, thereby improving the adhesion of the pattern portion to the base material.

Furthermore, since the oxide film layer becomes partially stable and difficult to dissolve in acid or alkaline solutions, it can be easily removed by providing a peeling plating layer.

[Example code] Hereinafter, it will be explained in more detail based on Examples.

After polishing a brass molded product as a base material by puff polishing, pretreatment was performed by trichlene degreasing and cathodic electrolytic degreasing, and then bright nickel plating was applied to a thickness of 2 μm using a Watt bath. After that, the molded product was immersed in a Sargent bath and heated at 20 A.
/ d rrr, current is applied for 3 minutes, 1 layer thickness is 0.4 μm
chrome plating.

The molded product thus obtained was immersed in a black chrome plating solution manufactured by Japan M and T, and the solution temperature was 20°C, 20A/drr.
F: A current was applied for 2 minutes to provide black chrome plating, followed by drying.

Next, a pattern was printed to a thickness of 9 μm using Seiko 1300 (black epoxy screen printing ink, manufactured by Seiko Advance ■) at 130°C.

Heat treated for 20 minutes, immersed in concentrated hydrochloric acid solution to dissolve and remove the chromium plating and black chrome plating on the areas where screen printing was not applied, and 6 μm thick nickel plating was applied to the removed areas by electroplating. Thereafter, gold plating was applied to a thickness of 3 μm by electroplating, and a decorative body with a pattern formed by black printing was obtained.

A molded iron product was used as a base material, and was pretreated by trichlene degreasing and anodic electrolytic degreasing, and then bright nickel plating was applied to a thickness of 5 μm using a Watt bath. After that, the above molded product was mixed with zinc cyanide 60g/ρ and sodium cyanide 40g/ρ.
g/Q, sodium hydroxide 80 g/Q, thiourea 0.2 g IQ, and glue 0.1 g/Q were mixed, immersed in a solution at a temperature of 30°C at 2 A/drrr for 3 minutes, and zinc plated with a thickness of 2 μm. .

After coating, chromic acid 200g/fl, sulfuric acid 5g/Q, nitric acid 5g/fi, and acetic acid 5g/Il were mixed and immersed in a solution at a temperature of 20°C for 10 seconds to form a chromic acid-based oxide film. , dried.

Next, a pattern was printed with a thickness of 8.1 μm using 5S-35000 (red acrylic screen printing ink, manufactured by Toyo Ink Manufacturing Co., Ltd.), dried at 150°C for 10 minutes, and
Immerse in 0% hydrochloric acid solution to dissolve the zinc plating and chromic acid-based oxide film layer on the areas that are not screen printed,
After removal, the removed part was electroplated with bright nickel plating with a thickness of 8 μm, and then electroplated.

A decorative body was obtained in which chromium plating was applied to a thickness of 0.1 μm and a pattern was formed by red printing.

[Effects] Table 1 shows the results of a printing adhesion test and a decorative effect test using the decorative bodies obtained in Examples 1 and 2.

Table 1 *1 Adhesion test・・・・・・1 depending on the cutter
100 squares were carved at 1 m intervals, and the number of squares remaining when the squares were peeled off using a commercially available adhesive tape was determined.

(Cross cut test) ×2 Decorative effect ・・・・・・ Visually judge the metallic luster on the surface of the plating layer and the sharpness of the pattern According to the present invention, metallic luster with high decorative effect It is possible to obtain a decorative body having excellent durability and to form a clear pattern on a base material.

[Brief explanation of the drawing]

FIGS. 1 to 6 show examples of manufacturing steps for decorative bodies obtained according to the present invention. 1... Metal base material, 2,2'... Oxide film layer, 3... Pattern portion by screen printing. 4...Non-patterned portion, 5...Plating layer, 6.6'...Plating layer for peeling.

Claims (2)

[Claims] (1) An oxide film layer corresponding to the pattern part is interposed between the metal base material and the pattern part formed by screen printing, and a release plating is further provided between the metal base material and the oxide film layer. A decorative body comprising a plating layer provided on a non-patterned portion of the base material with a plating layer interposed therebetween. (2) Form a peeling plating layer on the metal base material by plating, form an oxide film layer on the plating layer by a chemical or electrochemical method, and then form a pattern part by screen printing. A method for manufacturing a decorative body, which comprises removing an oxide film layer and a peeling plating layer from a non-patterned part, and then subjecting the non-patterned part to a plating treatment.