JPS6064666A - Decoration of metal product - Google Patents

Abstract

PURPOSE:To prevent abrasion by bringing a decorated part to the same plane, by preliminarily forming a non-conductive film layer to the surface of a metal product, and applying the press-bonding of a stamping foil to the conductive metal surface exposed by removing a desired part through a thermosetting resin. CONSTITUTION:A film layer 2 is formed on the surface of a metal product 1 by using a non-conductive paint having a thermosetting resin compounded therein and, subsequently, parts corresponding to a desired character or picture pattern are removed from the film layer 2 by laser irradiation. In the next step, an electrodeposition film layer 4 is formed to the conductive metal surface of the metal product exposed by removing the nonconductive film layer 2 in an electrodeposition coating bath comprising an aqueous solution or emulsion of a thermosetting resin fitted to the metal material in a thickness leaving the thickness of a stamping foil. Subsequently, under a semi-cured state of the film layer 4, a stamping foil 5 is adhered to the film layer 4 under pressure by using an elastomer such as silicone rubber heated to 150-200 deg.C and dry heating treatment is applied.

Description

DETAILED DESCRIPTION OF THE INVENTION A method. 8 more points, metal products table i'
A desired portion of the formed non-conductive B/film is removed, the removed IrJVc thermosetting resin is electrodeposited to form a coating layer, and the coating layer is stamped. The present invention relates to a method for decorating metal products, which is characterized by crimping foil.

A method of decorating metal, glass, or plastic by pressing a metal foil onto the surface of the metal, glass, or plastic is known. Furthermore, Japanese Patent Publication No. 55-6514 discloses a gold IS! method in which stamping foil metal foil is applied to the printed surface using a thermosetting mold. There are 119 ways to print products. However, in these cases, the protruding parts of the molded protrusions ψ iJ printed thermosetting resin IJ11 the protruding parts of the 11th layer are coated with gold foil). It has disadvantages such as being prone to melting and making it difficult to maintain the appearance of the protective foot.

In addition, since the metal foil of the stamping foil is heat-pressed onto the thermosetting resin layer of the semi-cured part, the protruding thermosetting resin spreads and protrudes, resulting in narrow letters with a width of 1 Al-1. There were limitations on precisely crushing metal foil such as designs.

It was created by tin because of the drawbacks of ``zero starting (Hai'').
7. In other words, the method for decorating metal products of the present invention can be used to decorate metal products by forming a non-conductive film layer on the surface of the metal product.
Desired portions of the non-conductive film layer were removed according to the design, etc., and a thermosetting resin was electrodeposited on the metal surface at 81°C in the evening, and a metal surface of equal gM was applied to the surface. After forming a coating layer and applying a heated IJF material to the coating layer before the coating layer is completely cured, the coating layer is cured. Features! It is something that

At Kizanisuj, metal products are plates, tubes, processed products, etc. made of aluminum, aluminum alloy, copper, copper alloy, etc., and their shapes are not particularly limited. LQ.

A non-conductive film consisting of a coating film applied to the surface of metal products can be applied to metal products that have been treated with a coating. Apply thermosetting resins such as Rekitono J1 resin, Acryl resin, Epoxy #111, Polyurethane + AIP, '1, and polyester resin to all non-conductive paints and use the normal painting method. 8, Spray painting, brush painting, roller painting, electric paint, #electronic painting, etc. - Any paint film 1
1. YoV painting [7Tate heating place 3B! It is formed as a result.

The thickness of the coating is not particularly limited, but is usually 20 to 30 .mu.m. In addition, if the material of the synthetic product is aluminum blown aluminum alloy, the surface of the product should be degreased and cleaned with a sodium hydroxide IJ cum solution, etc. after the ls polar acid oxidation treatment and pore sealing treatment. ,oxalic acid,?
a 1!9 oxide film formed from an aqueous solution of Shun acid, etc., at a current density of 1.0 to 1.5 A/dmF and 20 to 50
Direct current electrolysis is carried out for a minute, and then, if necessary, dyeing treatment is carried out by dipping in a dye solution, and further boiling and sealing treatment is carried out in a hydrothermal liquid such as nickel acetate or cobalt iP acid. For example, the vapor pressure is 5 kQ15 at a level of 211-W D
This is achieved by treating the fish stocking hole for 6f.

Although there is no particular limit to the thickness of the anodized tag treatment layer, it is usually between 8 and 15 μm.

The force i for removing the front P non-electrified and crotch layer according to the letters Fir ¥t, Leno pattern, etc. is L'l R1 like evJ*.
A method of cutting with a laser beam or a method of sealing with a laser beam is adopted.As for the physical cutting method, a diamond cutting tool, a medium ramic cutting tool, a cemented carbide tungsten cutting tool, etc. are selected and applied. In addition, in the method of irradiating a laser beam, any one of a YAG laser beam, a CO2 gas laser beam, a ruby laser beam, etc. is irradiated, and the local tXI<
There are methods to remove the non-conductive film layer by burning it out or melting and evaporating it, which is a removal method that has good reproducibility, high precision, and is efficient and suitable for mass production.

Desired characters, made of lumber that shields the laser beam
Apply a mask with an opening with a pattern, etc., apply the mask to the non-conductive film layer of a metal product, run the entire mask with a laser beam, and apply it to iK4. Only the non-44-electroconductive skin layer corresponding to 100 min is irradiated with the laser beam and removed by burning or melting and vaporizing. The material that shields the laser beam is the type of laser beam (r) (although it varies, it is made of a metal plate, metal foil, metal-containing paint film, etc.). Also, the conditions for scanning and irradiating the laser beam are t, J "It varies depending on the type and thickness of the isoelectric film layer and the type of laser beam, but for example, YA (+ laser, beam diameter = 50 to 150
μ#I〆, Takani 10~40W1 feed speed=200~4
It is possible to remove the non-conductive film layer under the condition of 00 m/sec.

Fire, letters, N1 pattern, etc. I! By using a well-known device that synchronizes original image scanning to read the image and laser beam theory to reproduce and irradiate an image of the same or similar shape on the irradiated surface for both bits, the above-mentioned laser beam There is a need for a shielding mask.
Designs, etc. can be quickly and efficiently reproduced on the surface of metal products as parts of the non-conductive film layer removed.

Naturally hardening tallow used in the electrodeposition coating of the present invention includes anionic alkyd resins, acrylic resins, polyester resins, polycretan ridge resins, etc., and cationic epoxy resins, modified acrylic resins, etc. A material suitable for the material of the metal product is selected, and in particular, a material with good adhesion to the metal foil of the stamping foil described later is adopted.

Electrodeposition coating is performed by degreasing and cleaning as a pre-treatment, and applying a voltage of 50 to 150 V between both sides of the gold H1 product and the stainless steel plate in an electrocoating solution containing a water-fixing solution or emulsion of the thermosetting IIt phase resin. A coating layer is formed by applying a direct current for 1 to 3 minutes. The thickness of the coating layer is 1tJ of gold! The thickness may be such that it is flush with the surface of the product or is inclined so that it exists in a recessed portion lower than the surface.

A metal foil formed by vapor-depositing a metal such as aluminum or gold is provided on the scraping foil HAPACE film, or a well-known method in which a metal foil such as gold or silver is bonded and a top coat is further applied on top of the metal foil. There are metal foils colored in various glittering colors, which can be used as desired.

To press the metal foil of the stamping foil onto the coating layer,
When the coating layer is semi-cured and has a certain degree of viscosity by heating if necessary, the temperature is 1150-200℃.
The stamping foil may be bonded by applying pressure to the coating film mK using an elastic body such as silicone rubber heated to a temperature of . Further, the semi-cured coating layer is in such a state that it does not deform or spread when it is pressed against the stamping foil.

In the present invention, since the coating layer is formed in the concave portion lower than the surface of the metal product, by applying pressure with a heated elastic body, the metal foil of the stamping foil only has the adhesive coating layer present on the four parts. Contact 4! J-shi, it does not adhere to other non-conductive film layers, so it is discarded. Also, at this time, the coating layer does not deform, spread, or protrude, making it possible to precisely and delicately decorate fine or narrow characters, designs, etc. Further, the metal product having the metal foil crimped thereon as described above is subjected to a dry heat treatment at a temperature of 120 to 200° C. for 15 to 60 minutes to strongly adhere the metal foil to the coating layer and to harden the coating layer. Furthermore, if necessary, a top coat made of a transparent thermosetting resin may be applied to the above-mentioned decorated metal product, thereby increasing the abrasion resistance of the metal foil.

The drawings are sectional views of main parts showing the method of the present invention according to its order. In the drawing 1#-1: All 1i11 products, 2
3 is a non-conductive film layer formed on the surface of a metal product, 3 is a conductive metal surface exposed by removing the non-conductive film layer according to characters, designs, etc., and 4 is an electrodeposition on a metal surface. This is a stamping foil gold foil that is pressure-bonded to the coating film layer formed by painting, the 5-coat M layer. Although not shown in the drawings, a top coat may be applied to the surface of the metal foil 50 or the entire surface of the decorated gold dust crystal.

As mentioned above, in the present invention, the metal foil can be crimped onto the surface of the metal product or into the low recess, and unlike the conventional method, the metal foil is not provided on the protruding part, so the metal foil has high durability. Excellent abrasion resistance. Alternatively, by electrodepositing a thermosetting resin on a conductive metal surface to form a coating layer, the coating layer can be provided by a printing method as in the invention of Japanese Patent Publication No. 55-6514. Unlike this, there is no need for printing alignment. Because the coating layer is formed on the four parts that are the same as the surface of the whole island product or have a low bite, the coating layer will not be deformed when the metal foil of the stamping foil is pressed, making it possible to create delicate letters, letters, etc. It is possible to precisely decorate metal products with metal foil such as designs.

The present invention is applicable to various metal products, but is particularly applicable to metal products that serve as containers for decorative needles. An excellent container tl-offer.

Next, examples of the present invention will be described. Note that the present invention is not limited to only what is described in the examples.

Example 1 Two caps made of aluminum (purity 99.8 wt%)
Degrease and wash with wt% sodium hydroxide aqueous solution, j8wt
% IILe aqueous solution at a temperature of 25° C. and subjected to direct current electrolysis at a current density of 1.5 A/dnt for 60 minutes to form an anodic oxide film with a thickness of 10 μm.

Next, after immersing in a deep blue dye solution for 20 minutes, the solution temperature was 9.
It was immersed in a 5 wt % nickel acetate solution at 5° C. for 20 minutes to seal the holes. Next, on the top of this cap, attach a mask made of stainless steel with the letter A opened on the support plate made of prepared alloy, and the irradiation surface of this mask: 20mm diameter A CO and gas laser beam (wavelength: 1066 μm) was irradiated under conditions of 6 to 52 J/eI/1 to remove the anodized sealing layer marked with letter A and expose the conductive aluminum metal surface. Next, this cap was immersed in an emulsion of an acrylic anionic electrodeposition coating resin with a non-volatile content of 15% at a temperature of 25°C.
Using the cap as an anode and the stainless steel plate as a cathode, a direct current of 100 V was applied between the two electrodes for 1 minute to form a 2 μm thick coating layer with the letter A on the aluminum metal surface. Next, this cap was heated in a heating furnace at a temperature of 100°C for 10 minutes to make the coating layer semi-cured, and a silver aluminum metal foil of stamping foil was closely attached to it.
Pressure is applied with a silicone rubber elastic body heated to a temperature of 80°C,
Aluminum foil was crimped. Next, this cap was heated in a furnace at a temperature of 150° C. for 20 minutes to strongly adhere the aluminum foil and harden the coating layer.

I was able to decorate the top of the blue cap with the glittering silver letters ``A'' with great precision.

Note that the aluminum foil was present in the recessed portion about 2 μm below the surface of the cap.

Example 2 Example 1 f Go, instead of removing the anodic oxidation sealing layer of the letter A by irradiating with a gas laser beam, the anodic oxide of the letter 8 was removed by physical cutting using a diamond cutting tool. The sealing layer was removed. Other engineering F
The same IA process as in Example 1 was carried out to create a cap with the same decoration.

Example 6 A brass name plate was subjected to acid and alkali cleaning treatment in the usual manner, and a black epoxy paint was spray-painted on the surface of the name plate at an air pressure of 5141/ca+. The coating film was cured by heating it in the dark for 20 minutes at ℃ temperature. Paint film thickness #'i30μ
It was m.

Next, one side of this name plate was also scanned with KB, and the same image was reproduced on the illuminated surface of the original Wii.
A YAG laser beam (wavelength: 1°06 μ?r+) generator 2 was used which synchronized laser beam scanning. This device captures the original image with a TV camera, converts the analog data output from the TV camera into on/off values, and controls the laser beam irradiation on/off according to the on/off values. It looks like this. In other words, the original image of the letter B is captured and scanned by a television camera, and at the same time, the image of the letter B is irradiated and scanned by a YAG laser beam onto the paint film to remove the paint film, thereby forming the brass metal surface of the letter B. Exposed.

The conditions for irradiating the laser beam are: Beam diameter: 120r
〆, Dekani 12W% QX Switch Inner Wave Kan: 5 [I
Kuz, feed rate: 600 fins/sea.

Next, this name plate was heated at a liquid temperature of 20℃ and a non-volatile content of 25℃.
wt% of rainbow; immersed in an emulsion bath of oxidized cation type electric paint abrasive resin, name play), and applying a 100V DC current between the two poles using the stainless steel plate as the positive point.
Apply electricity for 131 minutes and paint the letter 8 of 28 μ stone M.
A WI layer was formed on the exposed brass metal surface. Next, place this name plate in a heating furnace at a temperature of 100℃.
Heat for 5 minutes! The Ii film layer was brought into a hardened state, and a gold FA stamping foil made of gold aluminum was closely adhered thereon, and the aluminum foil was pressed with a silicon rubber elastic body heated to a temperature of 180°C. Next, this i.
-Spray paint the mug grates with transparent epoxy resin paint and apply a top coat. luiM The aluminum foil was heated for 60 minutes in a heating oven at 150° C. to strongly adhere the aluminum foil and to cure the coating layer.

We were able to decorate the black nameplate with a glittery gold B and the letters ``B''.

Note that the aluminum foil was present on almost the same surface as the front surface of the name plate.

[Brief explanation of drawings]

Figures 1 and 2tJ1% Figure 6 are cross-sectional views of the main parts showing the method of making a single phrase in the order of execution. 1-Gold IIA product, 2-Non-conductive film layer, 3-Phantom 1
1] (parts of letters, designs, etc.), continuation of fF Operator Nejima Old Me7 Yamacho Tsui 1st page @ inventor Fuku 1) Yoshihiro [Co., Ltd.] inventor Hirotaka Ito @ inventor Katsuo Iwasaki 1 Nakamachi, Odawara City -1-2-905 458 Oba, Fujisawa City, Hatachi Shiroyama 2-201 5, Kotobukicho, Odawara City
Chome 1 Asahi No. 13

Claims (1)

[Claims] 1. Surface K11 of metal product - After forming the conductive film layer, remove desired portions of the non-#I conductive film layer according to arbitrary characters, designs, etc. The metal surface of the electrical element is exposed to the surface, and then a thermosetting resin is electrodeposited on the metal surface to form a coating layer, and the coating layer is completely cured.
Apply the metal foil of K stamping foil! Gold, which is characterized in that the coating layer is cured after being pressure-bonded to layer A with a heated elastic body! Special claim gg1 which is a crystalline alloy made by g.
Decoration method for metal products as described in section. 6. The method for decorating a dull metal product according to claim 2, wherein the non-conductive film (i) is an anodized pore-sealing film. 4. The method for decorating a metal product according to claim 1, wherein the metal of the metal product is copper or a copper alloy. 5. A method for decorating a metal product according to claim 1, nails 2, or 4, wherein the 11% non-conductive skin layer is a non-conductive paint film. 6. Non-conductive skin and [Claims 1 to 'A] in which the method for removing the desired portion of the layer is a method of physical cutting.
r; The method for decorating metal products according to any one of Item 5. 7. The method of removing a desired portion of the non-tetraelectric coating layer is a method of irradiating with a laser beam (TL).
11+ made of metal 67 according to any one of paragraphs 1 to 5
1 Decoration Katahiro.