JP2011212344A - Method for producing ornament, and ornament - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing an ornament, in which an ultraviolet ray curable resin formed in a three-dimensional shape with a convex front surface and a concave back surface is held in a precious metal frame.SOLUTION: The method for producing the ornament 10 includes: a molding die material mounting step in which a molding die material 3 composed of a polymer compound having at least tentative plastic properties is used such that the molding die material 3 and the precious metal frame 1 are pressed to each other while the molding die material 3 is in a plastic state so that the surface (a surface to be applied 32) of the molding die material 3 in the precious metal frame 1 is formed into an overall convex or concave three-dimensional shape from the edge of the precious metal frame 1; an ultraviolet ray curable resin application step in which an ultraviolet ray curable resin 2 is applied on the surface of the molding die material 3 mounted in the precious metal frame 1; an ultraviolet ray irradiation step in which the applied ultraviolet ray curable resin 2 is irradiated with an ultraviolet ray 5 for curing; and a peeling step in which the molding die material 3 is peeled off from the precious metal frame 1 and the ultraviolet ray cured resin 2.

Description

  The present invention relates to a method for manufacturing a decorative article, and in particular, manufacture of a decorative article including a noble metal frame having a three-dimensional shape and an ultraviolet curable resin layer having a three-dimensional solid shape held by the noble metal frame. It relates to methods and ornaments.

Conventionally, there are ornaments that are used in pendant heads and brooches, and a resin layer is formed in a noble metal frame. As a method for manufacturing such an ornament in which a resin layer is formed in a noble metal frame, for example, a patent In Reference 1, a fine watermark pattern void (in a gold frame) formed on a thin gold plate by etching is filled with a fluid liquid resin so that a flat surface is formed in the noble metal frame. Manufacturing an ornament is disclosed.
Further, in Patent Document 2, a resin layer (decorative pattern holding resin layer) is thickened and formed into a lens shape, and a pattern, characters, designs, figures, symbols, and the like having a three-dimensional effect are placed inside the resin layer. Thus, a decorative object that realizes a three-dimensional effect by the effect of the lens is disclosed.

JP-A-8-164007 JP-A-10-250299

However, the ornament of Patent Document 1 is a stained glass-like ornament, and the watermark pattern portion is a simple planar ornament.
Moreover, since the decorative article of Patent Document 2 casts an uncured transparent resin having a certain degree of viscosity on a flat substrate, the surface of the resin layer and the entire decorative article have a planar shape. Although it claims to have a three-dimensional appearance, it is only a pattern pattern that makes a three-dimensional feel, and the whole work does not have a three-dimensional shape. Further, since the colored resin is cast on the transparent resin in an uncured state, the colored resin is dispersed to some extent. Therefore, the pattern becomes an unclear pattern and a desired pattern cannot be obtained. As a result, this decorative product was a flat resin layer, and it was impossible to express three-dimensional expression full of reality, emphasizing patterns and vivid colors.
As described above, in the conventional method for manufacturing a decorative article in which a resin layer is formed in a noble metal frame, the decorative layer has a resin layer having a three-dimensional surface in the noble metal frame. There was a problem that the product could not be manufactured.

  The present invention has been made to solve the above-described problems, and manufacture of an ornament that holds an ultraviolet curable resin layer having a three-dimensional shape with a convex shape on the front surface and a concave shape on the back surface in a noble metal frame. It is an object to provide a method.

That is, the method for manufacturing a decorative article according to claim 1 of the present invention is the method for manufacturing a decorative article in which a noble metal frame holds an ultraviolet curable resin, and uses the molding material made of a polymer compound having plasticity for at least a while. In a state where the mold material is plastic, the mold material and the noble metal frame are pressed against each other so that the surface of the mold material in the noble metal frame is a convex or concave solid as a whole from the edge of the noble metal frame. [Molding mold mounting step] to shape,
Applying the ultraviolet curable resin to the surface of the mold material in the noble metal frame [ultraviolet curable resin application step];
Irradiating the applied ultraviolet curable resin with ultraviolet rays and curing it [ultraviolet irradiation step];
And [peeling step] for peeling the mold material from the noble metal frame and the ultraviolet curable resin.

According to the manufacturing method, in the molding material mounting step, the molding material and the noble metal frame are pressed against each other so that the surface of the molding material in the noble metal frame is entirely convex or concave from the edge of the noble metal frame. Make a solid shape. As a method of pressing the mold material and the noble metal frame against each other, there are a method of pressing the mold material against the noble metal frame and a method of pressing the noble metal frame against the mold material.
Further, each pressing method includes a back surface pressing method for pressing the back surface of the noble metal frame and a surface pressing method for pressing the surface of the noble metal frame.
The back surface pressing method strongly presses the back surface of the noble metal frame against the mold material, so that the mold material in contact with the back surface of the noble metal frame is deformed, and the surface of the mold material in the noble metal frame is naturally the edge of the noble metal frame. As a whole, it becomes a convex three-dimensional shape. At this time, the periphery of the noble metal frame and the molding material are in contact with each other. Of course, if necessary, an external force may be applied from the back side of the mold material (opposite the contact surface between the mold material and the noble metal frame) to form the mold material from the periphery of the metal frame into a convex three-dimensional shape as a whole. It is.
On the other hand, in the surface pressing method, the mold material and the surface of the noble metal frame are pressed against each other so that the periphery of the surface of the noble metal frame is in contact with the mold material. Next, an external force is applied to the surface of the mold material in the noble metal frame from the back side of the noble metal frame, so that the surface of the mold material in the noble metal frame has a concave three-dimensional shape as a whole from the edge of the noble metal frame.
And in both the said back surface pressing method and the said surface pressing method, an uncured ultraviolet curing resin is apply | coated to the surface of a shaping | molding die material at a ultraviolet curing resin application process. Therefore, the cured ultraviolet curable resin after the peeling step has a three-dimensional shape in which the front surface has a convex shape and the back surface has a concave shape.
Moreover, since an uncured ultraviolet curable resin is applied onto the surface of the mold material and irradiated with ultraviolet rays, the ultraviolet curable resin layer can be formed thin. Moreover, since the peripheral edge of the surface of the noble metal frame and the molding material are in contact with each other, the applied ultraviolet curable resin comes into contact with the peripheral edge of the noble metal frame. Therefore, the cured ultraviolet curable resin can be attached to the edge of the noble metal frame.
Even if the uncured UV curable resin is irradiated with UV light and cured in the UV irradiation process, the wettability between the UV curable resin and the mold material is poor. It is not integrated with the mold material. Further, the ultraviolet curable resin may be attached to at least a part of the inner periphery of the noble metal frame, and an ultraviolet curable resin layer having a three-dimensional solid shape may be formed, and is not necessarily provided on the entire circumference of the noble metal frame. You don't have to.

In the method for manufacturing a decorative article according to claim 2 of the present invention, in the above-described claim 1, the UV curable resin application step applies at least a part of the surface of the mold material in the noble metal frame [part] Application step] and [the whole application step] to apply the entire surface of the mold material in the noble metal frame,
The ultraviolet irradiation step is performed each time after each of the partial coating step and the entire coating step.

According to the manufacturing method, in the partial application step, the uncured ultraviolet curable resin is applied to a part of the surface of the mold material in the noble metal frame, and the applied ultraviolet curable resin is cured by the ultraviolet irradiation step. In the entire coating step, the uncured ultraviolet curable resin is applied to the entire surface of the mold material in the noble metal frame, and the applied ultraviolet curable resin is cured by the ultraviolet irradiation step. Regarding the context of the partial coating process and the entire coating process, the (partial coating process-ultraviolet irradiation process) may be performed first, and then the (overall coating process-ultraviolet irradiation process) may be performed. (Irradiation process) may be performed first, and then (partial coating process-ultraviolet irradiation process) may be performed. In addition, (the whole coating process-ultraviolet irradiation process) may be taken in the middle, and (partial coating process-ultraviolet irradiation process) may be performed before and after that. -UV irradiation process) The combination of the procedural order and the number of times of execution are arbitrary. In addition, in the partial coating or the entire coating, it is natural that the ultraviolet curable resin applied by irradiating ultraviolet rays may be cured after repeatedly applying a brush containing an uncured ultraviolet curable resin several times. is there.
The UV curable resin application process is divided into a partial application process and an overall application process, and an ultraviolet irradiation process is performed each time. For example, in the partial application process, an uncured colored UV curable resin is partially applied, A pattern can be formed in accordance with the applied shape by irradiating with ultraviolet rays each time to cure the ultraviolet curable resin. Then, if the entire coating process is performed and the ultraviolet irradiation is performed, the parts that have been partially coated can be integrated together, and the entire part including the partially coated parts can be held on the precious metal frame.

  According to a third aspect of the present invention, there is provided a method for manufacturing a decorative article according to the first or second aspect, in which the molding material is three-dimensionally in a state where the molding material is plastic before the molding material mounting step. It further includes a [modeling step] for forming into a shape.

  According to the said manufacturing method, in the said modeling process, the whole or a part of shaping | molding die material can be freely shape | molded in the three-dimensional shape which combined convex shape and concave shape, without restrictions. Thereby, it is possible to reduce the burden of modeling the mold material having plasticity using a tool such as a spatula in the mold material mounting step. For example, in the molding material mounting process, the surface of the molding material in the frame of the noble metal frame is made into a three-dimensional shape to be modeled by simply pressing the noble metal frame against the three-dimensional shape part of the molding material molded as described above. You can also.

  According to a fourth aspect of the present invention, there is provided a method for producing a decorative article, wherein in the shaping step according to the third aspect, one or a plurality of grooves are formed on the surface of the mold material so as to be positioned in the noble metal frame. The partial application step is characterized in that a colored ultraviolet curable resin in which a color pigment or a dye is mixed with the ultraviolet curable resin is applied along the groove located in the noble metal frame.

  According to the manufacturing method, the grooves are formed on the surface of the mold material in the modeling process. Then, the molding material and the noble metal frame are pressed against each other so that the groove is positioned in the frame of the noble metal frame in the molding material mounting step. And in a partial application | coating process, uncured colored ultraviolet curable resin is apply | coated along a groove | channel. As a result, it is possible to easily form a pattern desired to be expressed with the colored ultraviolet curable resin, and it is possible to easily express an expression full of reality, or to express a pattern to be emphasized or a vivid color pattern.

  In the method for manufacturing a decorative article according to claim 5 of the present invention, the surface of the mold material in the noble metal frame is formed into the three-dimensional shape in the mold material attachment step according to claim 2 or claim 3. Later, one or a plurality of grooves are formed on the surface of the mold material in the noble metal frame, and the partial coating step includes a colored ultraviolet curable resin in which a colored pigment or a dye is mixed with the ultraviolet curable resin, Application is performed along the groove located in the noble metal frame.

  According to the manufacturing method, the groove is formed on the surface of the mold material in the noble metal frame so as to form a pattern desired to be expressed with the colored ultraviolet curable resin. And, in the partial application process, by applying uncolored colored UV curable resin along the groove and coloring it, it is possible to make the expression full of reality, express the pattern to be emphasized or vivid color Easy to do.

  The method for producing a decorative article according to claim 6 of the present invention is the method according to any one of claims 1 to 5, wherein the ultraviolet curable resin is a methacrylate resin, and has a high plasticity at least for a while. The molecular compound is an ethylene α-olefin copolymer having a softening point of 60 to 80 ° C.

  According to the manufacturing method, since the UV curable resin that is a methacrylate resin and the ethylene α-olefin copolymer of the mold material are poor in wettability, the uncured UV curable resin does not penetrate into the mold material. Therefore, even if this uncured ultraviolet curable resin is irradiated with ultraviolet rays and cured in the ultraviolet irradiation step, it is not integrated with the molding material. By this combination, the cured UV curable resin can be easily peeled from the mold material in the subsequent peeling step.

  The method for producing a decorative article according to claim 7 of the present invention is the method according to any one of claims 1 to 5, wherein the ultraviolet curable resin is a methacrylate resin, and has a high plasticity at least for a while. The molecular compound is a mixture of a main agent containing polyvinyl siloxane, hydroxide polysiloxane and silicon dioxide, and a curing agent containing polyvinyl siloxane, silicon dioxide and platinum.

  According to the production method, an ultraviolet curable resin that is a methacrylate resin, a main agent (containing polyvinylsiloxane, hydroxide polysiloxane, and silicon dioxide) and a curing agent (containing polyvinylsiloxane, silicon dioxide, and platinum). Since the wet moldability is poor with the mixed mold material, the uncured ultraviolet curable resin does not penetrate into the mold material. Therefore, even if this uncured ultraviolet curable resin is irradiated with ultraviolet rays and cured in the ultraviolet irradiation step, it is not integrated with the molding material. Also by this combination, the cured UV curable resin can be easily peeled from the mold material in the subsequent peeling step.

  The method for manufacturing a decorative article according to claim 8 of the present invention is the precious metal frame according to any one of claims 1 to 7, wherein the noble metal frame is made of gold, silver, copper, platinum, or an alloy thereof. It is characterized by being formed by firing a plastic composition containing a powder and an organic binder into a frame shape.

  According to the production method, a deformable plastic composition containing a noble metal powder and an organic binder is freely shaped and formed into a frame shape, which is fired to burn off the organic binder, and in the composition Since the noble metal frame can be formed very easily and the noble metal frame can be formed very easily, the noble metal frame can be easily manufactured even in a culture class or the like.

  A decorative article according to a ninth aspect of the present invention is manufactured by the method for manufacturing a decorative article according to any one of the first to eighth aspects.

  By using the production method of the present invention, a beautiful and three-dimensional decorative article can be easily produced by holding a UV curable resin layer having a three-dimensional shape with a convex shape on the front surface and a concave shape on the back surface in a noble metal frame. can do.

(A) It is a perspective view of the manufactured ornament. (B) It is AA sectional drawing. It is the figure extended with the both ends of the shaping | molding die material of a modeling process. It is the figure which bent the shaping | molding die material of FIG. 2, and attached both ends. It is the figure by which the some groove | channel was formed in the shaping | molding die material. It is a figure at the time of pressing a noble metal frame and a shaping | molding die material. (A) It is the perspective view which pressed the noble metal frame and the shaping | molding die material, made the surface of the shaping | molding die material in a noble metal frame protrude from the edge of a noble metal frame, and formed the application | coating target surface. (B) It is BB sectional drawing. It is the figure which has apply | coated the non-hardened ultraviolet curable resin (colored ultraviolet curable resin) to a groove | channel (a part of application | coating object surface) with a brush. It is a figure which has irradiated the ultraviolet-ray to the uncured ultraviolet curing resin (colored ultraviolet curing resin) apply | coated to the groove | channel (a part of application | coating surface). It is a figure which has apply | coated the uncured ultraviolet curable resin (transparent ultraviolet curable resin) with the brush to the whole application | coating object surface. It is a figure which has irradiated the ultraviolet-ray to the uncured ultraviolet curing resin (transparent ultraviolet curing resin) apply | coated to the whole application | coating object surface. It is a figure which peels a shaping | molding die from a noble metal frame and the hardened | cured ultraviolet curable resin. It is the figure which has further apply | coated transparent ultraviolet curable resin with the brush so that the ultraviolet curable resin of the back surface which was in contact with the application | coating object surface may be covered. It is the figure which has irradiated the ultraviolet-ray to the apply | coated uncured ultraviolet curing resin (transparent ultraviolet curing resin). It is the photograph which image | photographed the ornament manufactured by Example 1 from the surface. It is the photograph which image | photographed the ornament manufactured by Example 1 from the side surface. It is the photograph which image | photographed the ornament manufactured by Example 1 from the back surface.

The manufacturing method of the present invention is a method for manufacturing a decorative article in which the noble metal frame 1 holds the ultraviolet curable resin 2, and uses a molding material 3 made of a polymer compound having at least a temporary plasticity, and the molding material 3 is in a plastic state. Then, the mold material 3 and the noble metal frame 1 are pressed against each other so that the surface of the mold material 3 in the noble metal frame 1 is formed into a convex or concave three-dimensional shape as a whole from the edge of the noble metal frame 1. Step] (FIGS. 5 to 6), [UV curable resin application step] (FIGS. 7 and 9) for applying the ultraviolet curable resin 2 to the surface of the mold 3 in the noble metal frame 1, and the applied UV curable resin When the resin 2 is irradiated with the ultraviolet ray 5 and cured [ultraviolet ray irradiation step] (FIGS. 8 and 10), the mold material 3 is peeled from the noble metal frame 1 and the ultraviolet ray curable resin 2 [peeling step] (FIG. 11); Including A method of producing a decorative article 10 comprising a UV-curable resin layer having a noble metal frame having a three-dimensional shape, three-dimensional solid shape that is held in the noble metal frame.
First, the decorative article of the present invention will be described with reference to FIGS.

  The decorative article 10 of the present invention includes a noble metal frame 1 made of gold, silver, copper, platinum, or an alloy thereof, and a cured ultraviolet curable resin 2, and at least one inside the noble metal frame 1 having a peripheral wall. It is a decorative product in which a layer of UV curable resin 2 (transparent UV curable resin 2A and colored UV curable resin 2B) having a three-dimensional solid shape is formed by adhering to the periphery of the part. And as shown in FIG.1 (b), the layer of the hardened | cured ultraviolet curable resin 2 is thinly formed in the upper side from the edge of the noble metal frame 1, the surface is convex shape and the back surface is concave shape, and has a three-dimensional effect. It is a decoration.

First, the noble metal frame 1 and the ultraviolet curable resin 2 constituting the decorative article 10 of the present invention will be described.
[Precious metal frame]
The noble metal frame 1 is a base for ornaments, and is preferably a frame having a three-dimensional peripheral wall in which a noble metal made of gold, silver, copper, platinum or an alloy thereof is freely shaped.

(alloy)
The alloy is a metal containing a large amount of any of gold, silver, copper, and platinum. Since it is used for a decorative article, an alloy that has as little influence on the human body as possible is preferable.
Examples of the gold-rich alloy include yellow gold, green gold, pink gold, red gold, white gold, and black gold.
Silver-rich alloys include platinum silver mixed with platinum, silver mixed with gold and palladium, and yellow, pink silver, and green silver with different colors.
Examples of alloys containing a large amount of copper include bronze, which is a copper alloy containing tin, white copper, which is a copper alloy containing nickel, and brass, which is a copper alloy containing zinc.
As an alloy containing a large amount of platinum, an alloy containing iridium can be given.

The noble metal frame 1 having a three-dimensional shape may be produced by casting or forging a noble metal made of gold, silver, copper, platinum or an alloy thereof, and further, cutting, bending, cutting, polishing, grinding, etc. It is possible to mold by a method combining these processing methods.
Preferably, the precious metal frame 1 is obtained by firing a precious metal-containing plastic composition comprising gold, silver, copper, platinum or an alloy thereof and a precious metal-containing plastic composition containing an organic binder into a frame shape and sintering the precious metal powder. It is good to make it.

(Plastic composition)
The noble metal-containing plastic composition is a plastic composition composed of a noble metal powder and an organic binder, and can be shaped into a desired design by using a tool such as a spatula or thin rigid, or directly by hand. A copper-containing plastic composition can be preferably used.
The copper-containing plastic composition contains one or more powders selected from copper and copper alloys and an organic binder.
The silver-containing plastic composition contains at least one powder selected from silver and a silver alloy and an organic binder.
The copper-containing plastic composition preferably used is at least one powder selected from copper and a copper alloy, and the first copper powder having an average particle size of 0.1 to 4.0 μm is 25 to 75% by weight. And the balance contains a copper mixed powder composed of a second copper powder having an average particle size exceeding 4.0 μm and an average particle size of 10 μm or less, and an organic binder.
The silver-containing plastic composition preferably used is at least one powder selected from silver and a silver alloy, and the first silver powder having an average particle size of 0.1 to 4.0 μm is 25 to 75. The mixture contains a silver mixed powder composed of a second silver powder having an average particle size exceeding 4.0 μm and an average particle size of 40 μm or less, and an organic binder.

As described above, copper has a bronze color, and copper alloys include bronze, which is a copper alloy with tin, white copper, which is a copper alloy with nickel, and zinc. Many shades are known, such as brass, which is a copper alloy.
Further, silver has a white silver color, and the silver alloy is a silver alloy that does not contain copper as described above, and is an oxidation-resistant silver that does not affect the shape of the fired body even when fired in the air. It means an alloy. Specifically, a silver-Pd alloy to which 1% of Pd is added can be used.
These copper powder, copper alloy powder, silver powder, and silver alloy powder are not particularly specified for production methods such as atomized powder and reduced powder, but it is preferable that the particles have a nearly spherical shape.

A decorative object formed by combining a copper-containing plastic composition and a silver-containing plastic composition containing specific mixed powders each having a different average particle diameter can be fired in the atmosphere, and both the copper shaped fired part and the silver shaped fired part A certain strength required for a craft or decorative sintered article can be obtained, and the shrinkage of each fired body (modeled fired part) after firing can be approximated. It is too large to peel off or lose its shape after firing.
Moreover, even if the surface of a copper shaping | molding baking part oxidizes very thinly by air | atmosphere baking, it will not receive the influence of oxidation to the inside. Therefore, the oxide film on the surface of the copper molding fired part can be easily peeled off by rapid cooling, pickling, polishing, etc., and the appearance can be sufficiently used as a sintered article for craft or decoration.

Also, for one or more powders selected from copper and a copper alloy, also for one or more powders selected from silver and a silver alloy, more preferably,
Copper mixed powder comprising 25 to 75% by weight of a first copper powder having an average particle size of 0.5 to 4.0 μm, and the balance being a second copper powder having an average particle size of more than 4.0 μm and an average particle size of 10 μm or less And silver containing the first silver powder having an average particle size of 0.5 to 4.0 μm in an amount of 25 to 75% by weight and the balance being the second silver powder having an average particle size of more than 4.0 μm and an average particle size of 30 μm or less. Mixed powder is good.
More preferably,
A copper mixed powder containing 30 to 70% by weight of a first copper powder having an average particle size of 2.0 to 3.0 μm, and the balance comprising a second copper powder having an average particle size of 5 to 10 μm, and an average particle size of 2.0 A silver mixed powder containing 30 to 70% by weight of the first silver powder of ˜3.0 μm and the balance of the second silver powder having an average particle diameter of 5 to 20 μm is preferable.

  Although it does not specifically limit as said organic binder, Cellulose type | system | groups, such as methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, carmellose (carboxymethylcellulose), carboxymethylcellulose sodium, carboxymethylcellulose potassium, carboxymethylcellulose calcium, etc. Binders, Alginate binders such as sodium alginate, Starch, wheat flour, British gum, xanthan gum, polysaccharide binders such as dextrin, dextran, pullulan, animal binders such as gelatin, vinyl binders such as polyvinyl alcohol and polyvinylpyrrolidone, poly Acrylic acid, polyacrylic acid ester, etc. Le binder, polyethylene oxide, polypropylene oxide, to use to select one or more binders and the like other resinous binder such as polyethylene glycol preferred. In the cellulose binder, it is most preferable to use a water-soluble cellulose binder.

Further, if necessary, the following substances may be added to the organic binder as additives. That is, additives include organic acids (oleic acid, stearic acid, phthalic acid, palmitic acid, sepacic acid, acetylcitric acid, hydroxybenzoic acid, lauric acid, myristic acid, caproic acid, enanthic acid, butyric acid, capric acid, citric acid. Acid), organic acid esters such as phthalic acid-n-dioctyl, phthalic acid-n-dipyl (methyl group, ethyl group, propyl group, butyl group, octyl group, hexyl group, dimethyl group, diethyl group, isopropyl group, isobutyl Group organic acid ester), higher alcohol (octanol, nonanol, decanol), polyhydric alcohol (glycerin, arabit, sorbitan, diglycerin, isoprene glycol, 1,3-butylene glycol), ether (dioctyl ether, didecyl ether) ), Phenylpropane 1 type, or 2 or more types of mixtures (for example, olive oil containing many oleic acids) selected from the group consisting of lignin, liquid paraffin, and oils and fats, which is a network polymer formed by condensing the constituent units to be listed It is done. These additives are added for the purpose of improving plasticity, or added for the purpose of preventing the copper-containing plastic composition and the silver-containing plastic composition from adhering to the hand during molding. Furthermore, the above additives, lignin and glycerin, provide appropriate water retention.
Further, examples of the additive include anionic, cationic, and nonionic surfactants. The surfactant has an effect of improving the mixing property of silver powder or copper powder and an organic binder and an effect of improving water retention.

Of the organic binders, the water-soluble cellulose binder serves to impart plasticity. Of the organic binders, polyethylene oxide has a function of improving the adhesion in a liquid state by giving a high viscosity at a low concentration. Moreover, although sodium alginate gives moderate water retention like the said glycerol, it contributes also to the contact | adherence improvement effect | action. Furthermore, the polyacrylic acid ester and the polyacrylic acid serve to strengthen the adhesiveness.
The water-soluble cellulose binder serves to impart plasticity as described above, but the water-soluble cellulose binder includes methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, carboxymethyl cellulose sodium, carboxymethyl cellulose. Potassium, carboxymethylcellulose calcium and the like are used, and are used by dissolving in water.

As the amount of the organic binder in the copper-containing plastic composition and the silver-containing plastic composition using the above-mentioned water-soluble cellulose binder as the organic binder, as a more preferable aspect, the total amount of the organic binder is a solid content excluding water. It is desirable that it is within a range of 0.1 to 4 wt% in terms of display. In this case, if the amount of the organic binder is less than 0.1 wt%, it is difficult to obtain a homogeneous copper plastic composition and silver plastic composition. In addition, there is a disadvantage that the strength after coating and drying is weakened. When the amount of the organic binder exceeds 4 wt%, the shrinkage rate increases and cracks are likely to occur. Therefore, the amount of the organic binder is desirably 0.1 to 4 wt%.
When polyethylene oxide is used, it is desirable to use polyethylene oxide having a molecular weight of 100,000 to several million within the range of 0.1 to 3 wt%.
Moreover, when using surfactant, it is desirable to exist in the range of 0.03 to 3 wt%, and when using fats and oils, it is desirable to be within the range of 0.1 to 3 wt%.

Furthermore, water is added in a required amount. If it is too small, it becomes hard and difficult to form, and if it is too much, the shape cannot be maintained. The copper-containing plastic composition and silver-containing plastic composition used in the present invention can be prepared in the form of clay, paste, or slurry depending on the water content.
In the preferred composition, the metal powder is 75 to 99 wt% in any plastic composition. However, if the amount is too small, the shrinkage becomes large, and the sintering also becomes troublesome. In addition, the ratio of water is reduced, which hinders modeling.

Moreover, you may add Bi, Se, Sb, In, Sn, Zn powder, or those alloy powders as a sintering promoter.
Furthermore, you may add the metal compound powder or glass powder chosen from lead carbonate, lithium carbonate, zinc oxide, phosphoric acid, sodium carbonate, vanadium oxide, sodium silicate, phosphate etc. as an adhesive improvement agent.
In addition, for the purpose of improving plasticity, a network polymer formed by condensation of structural units having a phenylpropane skeleton such as lignin, glycerin, diglycerin, isoprene glycol, 1,3-butylene glycol, liquid paraffin, alcohols , Fats and oils, phthalic acid, phthalic acid-n-dioctyl, phthalic acid-n-dibutyl, and polyvinyl alcohol may be added, and a surfactant and a surfactant may be added as necessary.

[UV curing resin]
The ultraviolet curable resin 2 is a decorative portion held by the noble metal frame 1 in the decorative article 10. The ultraviolet curable resin 2 is a resin that can be applied, and is cured by irradiating the applied resin with ultraviolet rays.
The resin that can be applied is preferably a liquid resin having a viscosity that does not spill after application. Thereby, the quantity to apply | coat and the position to apply can be changed arbitrarily, and it can apply | coat thinly. For example, the uncured ultraviolet curable resin 2 preferably contains a reaction diluent, can be applied with a fine brush, and is adjusted to a viscosity that does not spill after application.
The ultraviolet curable resin 2 contains a reaction initiator or a photopolymerization initiator. Thereby, the uncured ultraviolet curable resin 2 is cured by irradiating ultraviolet rays. Therefore, after thinly applying the uncured ultraviolet curable resin 2, the layer of the thin cured ultraviolet curable resin 2 can be formed by irradiating ultraviolet rays.
The ultraviolet curable resin 2 described above is, for example, a monomer that is a reaction diluent that adjusts the viscosity of the resin as a main component, and a reaction initiator or photopolymerization that is a compound that cures when irradiated with ultraviolet rays. Those containing an initiator are preferred.
Moreover, by using such an ultraviolet curable resin 2, the time until the resin is cured can be shortened as compared with existing craft resins.
In addition, the ultraviolet curable resin 2 is preferably a compound that has as little influence on the human body as possible because it is used for decorative items.
Examples of the ultraviolet curable resin 2 that can be preferably used include those containing a methacrylate resin, for example, a trade name “P ² Jerry” (Napage Co., Ltd.). This “P ² jelly” has transparency and viscosity, and has high hardness when irradiated with ultraviolet rays.

Further, as the ultraviolet curable resin 2 of the present embodiment, a colored ultraviolet curable resin 2B obtained by mixing a transparent ultraviolet curable resin 2 (transparent ultraviolet curable resin 2A) with a colorant that is a pigment or a dye may be used.
The colorant is not particularly limited, but preferably has fine particles. By using a fine particle colorant, it is familiar when mixed with the uncured transparent UV curable resin 2A. Therefore, by irradiating the uncured colored UV curable resin 2B after mixing with UV light, it is brightly colored. A layer of colored UV curable resin 2B having high transparency can be formed.
Here, having transparency means that the visible light transmittance is high, and the cured transparent ultraviolet curable resin 2A can express a transparent feeling like a beautiful and clear crystal.
As the colorant, a material containing a water-soluble acrylic resin, for example, a trade name “UV resin color” (Aida Chemical Co., Ltd.) is preferably used.
It is preferable to use the above-mentioned trade name “P ² Jerry” (Napage Co., Ltd.) as the transparent ultraviolet curable resin 2A into which the colorant is mixed.

[Molding material]
Next, the mold material 3 will be described. This molding die 3 is used for forming a layer of the ultraviolet curable resin 2 into a three-dimensional shape having a convex shape on the front surface and a concave shape on the back surface, and holding the ultraviolet curable resin 2 on the noble metal frame 1.
The mold material 3 has plasticity at least for a while, and is made of a material having a property of losing plasticity with the passage of time and transitioning to a state without plasticity.
The state having plasticity is a state in which it can be deformed into a three-dimensional shape. When the plasticity is present, it is preferable that the molding material 3 can be easily and freely deformed by applying a small force to the molding material 3.
The state without plasticity is a state in which the cured product has elasticity and can maintain its shape. Even when the mold material 3 is deformed by applying a force in the absence of plasticity, it is preferable to return to the shape before the force is applied by the elastic force of the mold material 3.
The time from the state of plasticity to the state of no plasticity is the following from the time when [molding step] is started in the method of manufacturing a decorative article of the present embodiment (when the mold material 3 has plasticity). It is sufficient that there is sufficient time until the [molding material attaching step] is completed.
As such a mold material 3, a thermoplastic resin is brought into a state of being plasticized by applying heat, and then is cooled to be in a state of no plasticity, or from an initially plasticized state by mixing two kinds of materials. Examples thereof include a two-component mixed cured resin that gradually becomes plastic.

  Further, as a preferable property of the mold material 3, it is preferable that it is a polymer compound having poor wettability with respect to the ultraviolet curable resin 2 at least in a cured state without plasticity. Even if the resin 2 is applied, it is preferable that the uncured ultraviolet curable resin 2 does not penetrate inside. This is because the ultraviolet curable resin 2 cured by irradiating with ultraviolet rays is not integrated with the mold material 3 and can be easily separated from the cured ultraviolet curable resin 2.

Examples of the mold material 3 that can be used in the present invention include, as the thermoplastic resin, a trade name “Heat Form-II” (Fukushima Coffee Shop, <URL> http://www.f-file.co. jp / link / pdf / heat_form.pdf) and the product name “Premo!” (Asina Inc., <URL> http://www.athena-inc.co.jp/athenaFrame.html) as a thermosetting resin Can be mentioned. Furthermore, although it is hard to harden | cure, a kneading rubber can also be mentioned.
Particularly suitable as the mold material 3 of the present invention is one containing an ethylene α-olefin copolymer, for example, “Oyumaru” (registered trademark) (Hinodewashi Co., Ltd.), as long as it is the thermoplastic resin. be able to. Further, in the case of the two-component mixed curable resin, a mixture of a main agent containing polyvinylsiloxane, polyhydroxide hydroxide and silicon dioxide, and a curing agent containing polyvinylsiloxane, silicon dioxide and platinum, for example, The product name “Blue Mix” (Agusa Japan Co., Ltd.) can be mentioned.

Here, the components and characteristics of the product name “Oyumaru” (trademark registration) (Hinodewashi Co., Ltd.) and the product name “Blue Mix” (Agusa Japan Co., Ltd.) are described below.
・ Product name "Oyumaru" (Hinodewashi Corporation)
This product consists of 99.9% by weight of ethylene alpha olefin copolymer and 0.1% by weight of pigment. And a softening point is about 70 degreeC (60-80 degreeC). Therefore, the product can be easily brought to the softening point temperature by pouring hot water on it, warming it with warm air from a dryer, or placing it on a cooking plate heated by a hot plate. The product that has reached the temperature of the softening point becomes plastic and can be transformed into a three-dimensional shape.
And after this product is in a state of plasticity, it will cool down as time passes, and it will transition to a state of no plasticity and hardened, but in the state of plasticity, the [molding material mounting step] ends. Until then, it can be maintained in a plastic state. And this product which became a state without plasticity and hardened | cured has the elasticity of what was hardened | cured, and can maintain a shape. In addition, this product has poor wettability with respect to the ultraviolet curable resin 2 and can be easily separated from the cured ultraviolet curable resin 2.
When this product is in a state of no plasticity, it can be transitioned to a state of plasticity again by warming up to the temperature of the softening point.

・ Product name "Blue Mix" (Agusa Japan Co., Ltd.)
This product is composed of a base containing polyvinylsiloxane, hydroxide polysiloxane, and silicon dioxide, and a catalyst containing polyvinylsiloxane, silicon dioxide, and platinum. 1), it is gradually cured by kneading.
And when this product begins to knead the base and the catalyst, it is in a state of plasticity, and after a lapse of time, it transitions to a cured state without plasticity. The plastic state can be maintained until the [molding material attaching step] is completed. And this product which became a state without plasticity and hardened | cured has the elasticity of what was hardened | cured, and can maintain a shape. In addition, this product has poor wettability with respect to the ultraviolet curable resin 2 and can be easily separated from the cured ultraviolet curable resin 2.

[Description of manufacturing process]
Next, a method for manufacturing a decorative article according to this embodiment will be described.
Using the above-mentioned materials, the following [Precious metal frame manufacturing process], [Modeling process], [Mold mold attaching process], [Ultraviolet curable resin coating process], [Ultraviolet irradiation process], [Peeling process] 1 can be manufactured.

[Precious metal frame manufacturing process]
(Fired body manufacturing process)
In the manufacturing process of the noble metal frame, the noble metal frame 1 which is the base of the decorative product is manufactured.
Here, the manufacturing process of the clay-like noble metal-containing plastic composition, particularly the silver-containing plastic composition and the copper-containing plastic composition, which is easy to form the noble metal frame 1 into a three-dimensional shape, will be described. The description of manufacturing the noble metal frame 1 by a regular method in a normal factory or the like in which the precious metal frame 1 is formed by a combination of processing methods such as casting, forging, cutting, bending, cutting, polishing, and grinding is omitted.
The noble metal-containing plastic composition is a deformable plastic composition containing a noble metal powder and an organic binder, freely shaped into a frame shape, dried and fired to burn and remove the organic binder, Since the noble metal frame can be formed by sintering the noble metal powder in the composition, and the noble metal frame can be formed very easily, the noble metal frame can be easily manufactured even in a culture classroom or the like.
First, the precious metal-containing plastic composition is formed into a desired design by using a tool such as a spatula or thin rigid or directly by hand to form a precious metal frame shaped body. The shaped body is dried. The drying conditions are not particularly limited, but the heat drying is performed at a drying temperature of 80 to 180 ° C. and a drying time of 10 to 60 minutes using a dryer, an electric furnace, a dryer or the like. Preferably, the drying temperature is 80 to 120 minutes and the drying time is 20 to 40 minutes.
Confirmation of the completion of drying can be judged by whether a glass plate or a stainless steel plate is brought close to the main body shaped body or the copper-silver shaped body heated to, for example, 80 to 120 ° C. to determine whether condensation occurs. If condensation does not occur, it may be regarded as the end of drying.
In addition, although the said drying can be carried out by natural drying, it requires one day or more. Confirmation of drying is performed by heating with a dryer or the like and confirming that there is no condensation as described above.

Next, the dried model body is fired to obtain the noble metal frame 1.
Firing in the case of forming a dry shaped body of a noble metal frame by combining the silver-containing plastic composition and the copper-containing plastic composition may be firing in a reducing atmosphere or air firing (oxidizing atmosphere), 660-770. It is necessary to bake at 40 ° C. for 3 to 40 minutes, preferably at 700 to 750 ° C. for 10 to 15 minutes. Compared to the case of firing a molded body of a copper-containing plastic composition, it is fired at a lower temperature and in a shorter time. To do.
By the way, as the conditions for firing the dry shaped body of only the copper-containing plastic composition, the firing temperature of the copper-containing plastic composition whose powder is pure copper is 3 to 6 minutes if it is 990 ° C, and 4 if it is 980 ° C. 15 to 15 minutes, 5 to 30 minutes at 970 ° C, 5 to 40 minutes at 950 ° C, 10 to 50 minutes at 850 ° C, 30 to 60 minutes at 800 ° C, preferably It is 850-980 degreeC, More preferably, it is 950-970 degreeC.
Moreover, as conditions of baking of the dry modeling body only of a silver containing plastic composition, 5 minutes is a standard for 30 minutes-850 degreeC at 600 degreeC, and baking time is shortened, so that baking temperature is high.
In the case of atmospheric firing, the electric furnace is preheated to the firing temperature, the decoration is put into the electric furnace maintained at that temperature, the predetermined temperature is maintained, and it is taken out after the firing time and rapidly cooled. In this case, since firing in a reducing atmosphere is not performed as in the prior art, a troublesome work that requires an inert gas such as argon gas or nitrogen gas to continue to flow during firing and a reducing agent such as carbon are combined with the copper shaped body. It is possible to avoid troublesome work such as heating in the sealed container and from outside, and it can be easily applied at culture schools.
Firing in an argon atmosphere may be performed in the same manner as in the air firing by flowing argon gas through an electric furnace so that air does not enter.
In addition, a stainless steel container sealed with a reducing agent such as charcoal and a decorative object can be fired in a reducing atmosphere by placing it in an electric furnace. In this case, it is preferable to lengthen the firing time in consideration of the temperature rising time according to the amount of charcoal, the size of the stainless steel container, and the like.

(Surface oxide film removal process)
When the copper-containing plastic composition is fired in the fired body manufacturing process, a surface oxide film removing process is performed. In this surface oxide film removing step, the noble metal frame (copper) 1 obtained by firing the copper-containing plastic composition is rapidly cooled, pickled or polished to remove the oxide film formed on the surface.
The rapid cooling, pickling and polishing are known techniques for firing this type of copper-containing plastic composition, and pickling is a solid acid agent for pickling such as sodium hydrogen sulfate (commercially available). Immerse it in an aqueous solution or dilute sulfuric acid for about 5 minutes, and if necessary, polish it with a brush and wash immediately. Polishing is performed using a variety of polishing materials such as a commercially available polishing spatula, yarn buff, router, sponge abrasive, and stainless steel brush.
Thereby, as for the noble metal frame (copper) 1, the oxide film formed in the surface at the time of performing air baking (baking in an oxidizing atmosphere) in a baking body manufacturing process is removed.
As described above, if the particle size of the powder selected from copper and copper alloy in the copper plastic composition is 10 μm or less, even if an oxide film is formed on the surface by baking in an oxidizing atmosphere, pickling or polishing Can be easily removed.
As described above, the precious metal frame 1 can be formed from the silver-containing plastic composition by performing the sintered body manufacturing process. Moreover, the noble metal frame 1 can be created from the copper-containing plastic composition by performing a surface oxide film removing step after the sintered body manufacturing step. This noble metal frame 1 can be further polished if necessary to obtain a glossy noble metal frame 1.

[Modeling process]
In the modeling step, the molding die 3 is molded into a three-dimensional shape with the molding die 3 in a plastic state. 2 to 4 show a [modeling step] in which grooves are formed on the surface of the molding die 3.
Making the mold material 3 in a plastic state means that when the mold material 3 is a thermoplastic resin, heat is applied by applying hot water, etc., and the mold material 3 is a two-component mixed curable resin. The case is to mix two different materials. Thereby, the shaping | molding die material 3 will be in the state with plasticity.
The modeling of the molding die 3 into a three-dimensional shape means modeling the whole or a part of the molding die 3 into a three-dimensional shape combining convex shapes and concave shapes. The mold 3 can be freely shaped into a three-dimensional shape by stretching or bending the mold 3 in a plastic state or using a tool such as a spatula. Thereby, it is possible to reduce the burden of shaping the plastic mold material using a tool such as a spatula in the [mold material installation step]. That is, by pressing the noble metal frame 1 so that the inside of the noble metal frame 1 hits the three-dimensional shape portion of the mold material 3, the surface of the mold 3 in the noble metal frame 1 can be naturally formed into a three-dimensional shape. At that time, if necessary, the shape of the molding die 3 in the frame of the noble metal frame 1 may be repaired by shaping using a tool such as a spatula.

(Groove formation timing 1)
In this [modeling step], one or a plurality of grooves 31 may be formed on the surface of the mold 3. The groove 31 has a pattern formed of a colored ultraviolet curable resin 2B as a decorative product. Therefore, the position of the surface of the molding material 3 against which the noble metal frame 1 is pressed is determined in advance in the [molding material mounting step], and the groove 31 is formed in a pattern in the frame of the noble metal frame 1. Is preferred.
The number of the grooves 31, the shape of the grooves 31, the depth of the grooves 31, etc. are not limited for the grooves 31. The groove 31 may be formed by using a tool such as a spatula, or may be stretched by holding both ends of the molding material 3, bend the stretched molding material 3, and attach both ends to form the groove 31. Also good.
One technique for forming grooves on the surface of the molding die 3 will be described with reference to FIGS.
First, the molding die 3 is brought into a plastic state. Then, the mold 3 is stretched by holding both ends of the plastic mold 3 (FIG. 2). The stretched mold material 3 is bent and attached at both ends (FIG. 3). Then, the gap between the attached end and the other new end (the bent portion) is attached. Thereby, the groove | channel 31 is formed.
A plurality of grooves 31 are formed in the molding die 3 by repeating the operations of extending and attaching the molding die 3 while holding both ends (FIG. 4).

[Molding die mounting process]
In the molding material attachment step, the plastic molding material 3 and the noble metal frame 1 are pressed against each other so that the surface of the molding material 3 in the noble metal frame 1 is convex or concave as a whole from the edge of the noble metal frame 1. The application target surface 32 having a three-dimensional shape is formed.
The molding material 3 and the noble metal frame 1 are pressed against each other. The noble metal frame 1 may be pressed against the molding material 3, the molding material 3 may be pressed against the noble metal frame 1, or the molding material 3 and the noble metal. You may press so that both the frames 1 may press.
The molding material 3 and the noble metal frame 1 are pressed against each other (the back surface of the noble metal frame 1 is pressed against the molding material 3 as shown by the arrow, FIG. 5), so that the molding material 3 is in a plastic state. The periphery of the noble metal frame 1 in contact with 3 is in a state of being completely in contact with the surface of the molding material 3.

Here, as the pressing method, there are a back surface pressing method in which the back surface of the noble metal frame 1 is pressed and a surface pressing method in which the surface of the noble metal frame 1 is pressed.
In this back surface pressing method, the mold material 3 and the back surface of the noble metal frame 1 are strongly pressed against each other, so that the periphery of the noble metal frame 1 and the mold material 3 are in contact with each other, and the mold material that is in contact with the noble metal frame 1. 3 is deformed, and the surface of the mold material 3 is pushed up from the edge of the noble metal frame 1 on the side not in contact with the mold material 3 (FIG. 6). Thereby, the surface (application target surface 32) of the molding die 3 in the noble metal frame 1 naturally has a convex three-dimensional shape as a whole from the edge of the noble metal frame 1. By forming a resin layer on the surface of the convex mold material 3, a three-dimensional resin layer having a convex surface and a concave back surface can be formed. If necessary, external force may be applied from the back side of the mold material (the opposite side of the contact surface between the mold material and the noble metal frame), and the mold material may be arranged in a convex three-dimensional shape as a whole from the periphery of the metal frame. May further modify the surface shape of the molding material 3 in the noble metal frame 1 with a spatula or the like.
Thus, when the surface of the shaping | molding die material 3 is formed in convex shape by the back surface pressing method, subsequent operation | work is performed from the viewpoint from the surface of a decorative article.
On the other hand, in the surface pressing method, the molding material 3 and the surface of the noble metal frame 1 are pressed against each other so that the peripheral edge of the surface of the noble metal frame is in contact with the molding material. Next, an external force is applied to the surface of the mold material in the noble metal frame from the back side of the noble metal frame, so that the surface of the mold material 3 (application surface 32) in the noble metal frame is generally concave from the edge of the noble metal frame. The three-dimensional shape. The external force means may be a tool such as a spatula or a hand. By forming a resin layer on the surface of the concave molding material 3, a resin layer having a three-dimensional shape with a convex surface and a concave back surface can be formed.
Thus, when the surface of the molding die 3 is formed in a concave shape by the surface pressing method, the subsequent operations are performed from the viewpoint from the back side of the decorative article.

(Groove formation timing 2)
When the groove 31 is not formed in the [modeling step], the three-dimensional shape of the molding die 3 in the noble metal frame 1 is made into a three-dimensional shape in the [molding die attachment step]. One or a plurality of grooves 31 may be formed on the surface of the molding die 3 (application target surface 32).
The number of the grooves 31, the shape of the grooves 31, the depth of the grooves 31, etc. are not limited for the grooves 31. The groove 31 may be formed by using a tool such as a spatula, or may be formed by pushing the mold material 3 by hand.

[UV curing resin coating process]
In the ultraviolet curable resin application process, the uncured ultraviolet curable resin 2 is applied to the surface (application target surface 32) of the molding die 3 in the noble metal frame 1.
This step is performed after waiting until the mold 3 is in a state of no plasticity. The state without plasticity is preferably cured to the extent that it is not deformed by the force applied to the mold material 3 when the uncured ultraviolet curable resin 2 is applied to the mold material 3.
The means for applying the uncured ultraviolet curable resin 2 can be applied to the application target surface 32, and when the ultraviolet curable resin 2 is cured, the thickness of the applied ultraviolet curable resin 2 is uniform. It is preferable to use a fine brush or the like that can be applied.

[Ultraviolet irradiation process]
In the ultraviolet irradiation process, the applied ultraviolet curable resin 2 is irradiated with ultraviolet rays 5 to be cured. And this process is performed each time after each process of [partial application process] and [whole application process] of [ultraviolet curable resin application process].
By irradiating the uncured ultraviolet curable resin 2 with the ultraviolet light 5, the ultraviolet curable resin 2 starts to be cured by the reaction initiator or the photopolymerization initiator contained in the ultraviolet curable resin 2. Here, since the uncured ultraviolet curable resin 2 before being irradiated with the ultraviolet rays 5 has poor wettability with the mold material 3 and does not penetrate into the mold material 3, the cured ultraviolet curable resin 2 is integrated with the mold material 3. Never do.
[Ultraviolet irradiation step] is, for example, using a commercially available UV box that outputs ultraviolet light 5 or a germicidal lamp, and a mold material 3 in which an ultraviolet curable resin 2 is applied inside the UV box and a noble metal frame. 1 and the ultraviolet ray 5 is emitted, the ultraviolet ray curable resin 2 can be easily irradiated with the ultraviolet ray 5.

(Partial application process and overall application process in UV curable resin application process)
In the [ultraviolet curable resin application step], after the uncured ultraviolet curable resin 2 is applied, the uncured ultraviolet curable resin 2 may be further applied. However, before performing the overcoating, an [ultraviolet irradiation step] is performed to cure the once applied ultraviolet curable resin 2 to form a layer of the ultraviolet curable resin 2, and then to the application target surface 32 including the layer. Uncured UV curable resin 2 is applied. Thereby, the layer of the ultraviolet curable resin 2 can be stacked and formed. Further, the ultraviolet curable resin 2 applied first and the ultraviolet curable resin 2 applied later are not mixed.
The layer formed by stacking the layers of the ultraviolet curable resin 2 is formed by repeatedly performing the [entire application step] for applying the entire application target surface 32 or the [partial application step] for applying a part of the application target surface 32. Is done. After these steps, the [ultraviolet irradiation step] is performed.

Here, the [ultraviolet curable resin coating step] and the [ultraviolet irradiation step] in the case of performing the [overall coating step] after the [partial coating step] will be described with reference to FIGS.
First, an uncured transparent ultraviolet curable resin 2A and a colorant are mixed to produce an uncured colored ultraviolet curable resin 2B having a desired color. Then, the generated uncured colored ultraviolet curable resin 2B is applied with a brush (fine brush) to the groove 31 formed on the surface (application target surface 32) in the noble metal frame 1 of the molding die 3 (FIG. 7: [ Partial application process]). Then, the applied colored ultraviolet curable resin 2B is irradiated with ultraviolet rays 5 to cure the colored ultraviolet curable resin 2B (FIG. 8).
Next, uncured transparent ultraviolet curable resin 2A is applied with a brush (fine brush) so as to cover the entire surface 32 to be coated (FIG. 9: [Whole coating process]). Then, the applied transparent ultraviolet curable resin 2A is irradiated with ultraviolet rays 5 to cure the transparent ultraviolet curable resin 2A (FIG. 10).
It is preferable that the layer of the ultraviolet curable resin 2 cured by performing the above steps has a sufficient hardness so as not to be deformed even if it is directly touched or pinched.

  The whole application target surface 32 is the entire surface (application target surface 32) of the molding material 3 located in the noble metal frame 1 including all boundaries with the edges of the noble metal frame 1. Thereby, since the peripheral edge of the surface of the noble metal frame 1 and the molding material 3 are completely in contact with the ultraviolet curable resin 2 applied in the [overall coating step], the ultraviolet curable resin 2 is in contact with the peripheral edge of the surface of the noble metal frame 1. . In the [ultraviolet irradiation step], the cured ultraviolet curable resin 2 can be attached to the periphery of the surface of the noble metal frame 1 by irradiating with ultraviolet rays. Further, by performing the [Whole coating process], the part coated in the [Partial coating process] is integrated. Thereby, the noble metal frame 1 can hold the ultraviolet curable resin 2.

Here, the [overall coating step] may be performed first, or the [partial coating step] may be performed first.
For example, when the application surface 32 has a concave three-dimensional shape by performing the surface pressing method in the molding material attaching step, the [overall application step] may be performed first. On the other hand, when the application surface 32 has a convex three-dimensional shape by performing the back surface pressing method in the molding material attaching step, the [whole application step] may be performed last. By performing the [overall coating step] in this order, the outermost ultraviolet curable resin 2 layer in the noble metal frame 1 is formed. Thereby, since the outermost layer of the ultraviolet curable resin 2 is covered with one layer, a decorative article having a smooth surface can be manufactured.

By using the uncured colored UV curable resin 2B in which a colorant is mixed with the uncured UV curable resin 2, a layer of the UV curable resin 2 having a bright color can be formed. And the layer of colored ultraviolet curable resin 2B of various colors can be produced | generated by changing the color of a colorant or adjusting the addition amount of a colorant. In addition, by using the colored UV curable resin 2B of various colors, the [UV curable resin coating process] and the [UV irradiation process] are repeatedly performed to create a decorative product including the brightly colored UV curable resin 2. can do.
In the above description, in the [overall coating step], the transparent ultraviolet curable resin 2A is applied, the ultraviolet ray 5 is irradiated, and the transparent ultraviolet curable resin 2A is cured, but the present invention is not limited thereto. In the case of producing a decorative product based on a specific color, in the [whole coating step], the colored ultraviolet curable resin 2B may be applied and irradiated with the ultraviolet ray 5 to form the colored external line curable resin 2B. Yes, what kind of ultraviolet curable resin 2 is formed in the [overall coating step] is arbitrary.

[Peeling process]
In the peeling process, the molding material 3 having no plasticity is peeled from the noble metal frame 1 and the cured ultraviolet curable resin 2.
Since the mold material 3 has poor wettability with the noble metal frame 1 and the cured ultraviolet curable resin 2, the mold material 3 does not adhere to the noble metal frame 1 and the cured ultraviolet curable resin 2. For this reason, by applying an external force to the mold material 3 that is not plastic, the mold material 3 and the noble metal frame 1 can be easily separated from the mold material 3 and the cured ultraviolet curable resin 2. Then, the mold material 3 can be easily peeled from the noble metal frame 1 and the cured ultraviolet curable resin 2 without peeling the noble metal frame 1 and the cured ultraviolet curable resin 2 (FIG. 11). Thereby, the noble metal frame 1 holding the ultraviolet curable resin 2 (the transparent ultraviolet curable resin 2A and the colored ultraviolet curable resin 2B) can be obtained.

As described above, according to the manufacturing method of the embodiment, it is possible to manufacture a decorative article in which the noble metal frame 1 holds the two layers of the ultraviolet curable resin having a three-dimensional shape having a convex shape on the front surface and a concave shape on the back surface. It becomes.
In particular, when the two UV-curable resin layers are made transparent, the structure has a three-dimensional shape with a convex shape on the front surface and a concave shape on the back surface. Therefore, as in Patent Document 2, a conventional resin layer in which the resin layer is simply thickened. Compared with, it becomes much more transparent.

  In addition, after this [peeling step], if necessary, the surface of the ultraviolet curable resin 2 that has been in contact with the mold material 3 (the surface that hits the back surface of the decorative article) is irradiated with the ultraviolet rays 5, thereby the ultraviolet curable resin 2. Harden the surface. Then, the transparent ultraviolet curable resin 2A is applied to the surface of the cured ultraviolet curable resin 2 with a brush (fine brush) (FIG. 12). The applied transparent ultraviolet curable resin 2A is irradiated with ultraviolet rays 5 (FIG. 13) to cure the surface of the transparent ultraviolet curable resin 2A. Finally, if there is an ultraviolet curable resin 2 that protrudes from the noble metal frame 1, it is cut out with a design cutter or the like. By performing this process, the decorative article 10 shown in FIG. 1 can be further beautifully finished.

  As mentioned above, although the manufacturing method of the ornament in embodiment is demonstrated, this invention is not limited to the manufacturing method demonstrated in embodiment. For example, the “ultraviolet curable resin coating process” of the embodiment includes the “partial coating process” and the “whole coating process”, but it may be only the “whole coating process”.

  Further, according to the method for manufacturing a decorative article of the present invention, an ultraviolet curable resin layer having a three-dimensional shape having a convex shape on the front surface and a concave shape on the back surface is used as a noble metal at a culture school or home because no large equipment is required. A decorative article to be held in the frame can be manufactured.

Next, Example 1 of the present invention will be described.
Example 1
<Raw materials used>
Here, in Example 1, the trade name “Oyumaru” (registered trademark) (Hinodewashi Co., Ltd.) was used for the mold member 3. The trade name “P ² Jerry” (Napage Co., Ltd.) was used as the transparent ultraviolet curable resin 2A (ultraviolet curable resin 2). For the colorant, trade names “UV resin color: R-169 (rose), R-172 (mint green), R-174 (aqua), R-202 (lemon), R-204 (white)” are used. (Aida Chemical Industry Co., Ltd.) was used.
The silver powder constituting the silver-containing plastic composition for forming the noble metal frame 1 is pure silver, the first silver powder having an average particle diameter of 2.5 μm (50 wt%) (46 wt%) and the average particle diameter of 20 μm. A silver mixed powder in which 50% by weight of 2 silver powder was mixed was prepared. A clay-like silver-containing plastic composition was prepared by sufficiently mixing 92 wt% of this silver mixed powder with 0.7 wt% starch as an organic binder, 0.8 wt% cellulose, and water-soluble binder with the balance being water.

<Precious metal frame manufacturing process>
First, the silver-containing plastic composition was freely shaped to form a frame having a three-dimensional peripheral wall. The obtained shaped body (noble metal frame 1) was put into a dryer set at a drying temperature of 100 ° C. and dried for a drying time of 30 minutes.
(Fired body manufacturing process)
The dried shaped body (noble metal frame 1) was air baked at 800 ° C. for 5 minutes. The air firing was performed by preheating the electric furnace to the firing temperature, putting it in the electric furnace maintained at that temperature, and maintaining a predetermined temperature and time.

<Modeling process>
The temperature of the cooking plate of the hot plate was set to about 100 ° C., and the molding material 3 was placed on the cooking plate. When the temperature of the mold material 3 reached 70 ° C., it was taken out by holding both ends of the mold material 3 in a soft state (plastic state) (FIG. 2), the expanded mold material 3 was bent, and both ends were bonded together. (Figure 3). And the groove | channel 31 was formed by putting together between the edge | end and the other new end (folded location). Furthermore, the process of extending and attaching the molds 3 with both ends was repeated, and a plurality of grooves 31 were formed in the mold 3 (FIG. 4).

<Molding die attachment process>
While the mold material 3 is soft (plastic state), the back surface of the noble metal frame 1 is pressed against the mold material 3 (FIG. 5), and the surface of the mold material 3 in the noble metal frame 1 is attached to the surface of the noble metal frame 1. Projecting from the edge of the surface, a convex application target surface 32 was formed (FIG. 6). At this time, the peripheral edge of the surface of the noble metal frame 1 and the molding material 3 are brought into full contact. Then, the mold material 3 having plasticity was left as it was. Thereby, the shaping | molding die material 3 was set, and it was in the state without plasticity.

<Partial coating process (UV curable resin coating process)>
Uncured transparent UV curable resin 2A (trade name “P ² Jerry” (Napage Co., Ltd.)), coloring agent (trade name “UV resin color: R-160 (Rose)” (Aida Chemical Co., Ltd.) and products The name "R-174 (Aqua)" (Aida Chemical Co., Ltd.) was mixed at a ratio of 3: 1 to produce a purple uncured colored UV curable resin 2B.
Then, the uncured colored UV curable resin 2B was applied with a brush (thin brush) to the groove 31 on the surface (convex surface 32) in the noble metal frame 1 of the molding material 3 having no plasticity ( FIG. 7).
<Ultraviolet irradiation process>
The colored ultraviolet curable resin 2B was irradiated with ultraviolet rays 5 until the applied colored ultraviolet curable resin 2B was completely cured (FIG. 8).

<Whole coating process (UV curable resin coating process)>
The uncured transparent ultraviolet curable resin 2A was applied with a brush (fine brush) so as to cover the entire convex surface 32 to be applied including all the boundaries with the edge of the noble metal frame 1 (FIG. 9). At this time, the transparent ultraviolet curable resin 2 </ b> A is applied so as to be in contact with the entire periphery of the surface of the noble metal frame 1.
<Ultraviolet irradiation process>
The transparent ultraviolet curable resin 2A was irradiated with ultraviolet rays 5 until the applied transparent ultraviolet curable resin 2A was completely cured (FIG. 10).

<Peeling process>
The noble metal frame 1 and the mold material 3 having no plasticity were held, and the mold material 3 was peeled off from the noble metal frame 1 (FIG. 11). Thereby, the decorative article 10 in which the noble metal frame 1 holds the layer of the ultraviolet curable resin 2 (the transparent ultraviolet curable resin 2A and the colored ultraviolet curable resin 2B) cured in a three-dimensional shape having a convex shape on the front surface and a concave shape on the back surface is obtained. (FIG. 1).

Uncured transparent ultraviolet curable resin 2A (trade name “P ² Jerry” (Napage Co., Ltd.)) and each colorant (trade names “UV resin color: R-202 (lemon), R-172 (mint green)), R-204 (white) "(Aida Chemical Co., Ltd.)) was mixed to produce uncured colored UV curable resin 2B of yellow, yellowish green, and white, respectively.
Then, yellow, yellow-green, white, and purple uncured colored UV-curable resin 2B were applied in order from the center side to the outside of the decorative article on the UV-curable resin 2 on the back surface with a brush (thin brush). The applied colored ultraviolet curable resin 2B was irradiated with ultraviolet rays 5 to cure the colored ultraviolet curable resin 2B.
Furthermore, in order to improve the appearance of the decorative article 10, uncured transparent ultraviolet curable resin 2A was applied with a brush (fine brush) so as to cover the ultraviolet curable resin 2 on the back surface (FIG. 12). Then, the applied transparent ultraviolet curable resin 2A was irradiated with ultraviolet rays 5 to cure the transparent ultraviolet curable resin 2A (FIG. 13).

As a result, it is possible to obtain a decorative product 10 in which the inside of the noble metal frame 1 holds the ultraviolet curable resin 2 cured in a three-dimensional shape having a convex shape on the front surface and a concave shape on the back surface (FIGS. 13, 14, and 15).
As shown in FIG. 1, FIG. 13, FIG. 14, and FIG. 15, the decorative article 10 of Example 1 has an ultraviolet curable resin 2 having a three-dimensional shape with a convex shape on the front surface and a concave shape on the back surface. It was possible to form a thin layer of the ultraviolet curable resin 2.

(Conventional example 1)
In the following procedures (1) to (6), a decorative article having a transparent resin layer formed in a noble metal frame was manufactured.
As in Example 1, the trade name “P ² Jerry” (Napage Co., Ltd.) is used as the UV curable resin, and the colorant mixed with “P ² Jerry” (transparent UV curable resin) to produce a colored UV curable resin. The product name “UV resin color” (Aida Chemical Industry Co., Ltd.) was used.
As the noble metal frame, one produced by the same procedure as that for producing the noble metal frame of Example 1 was used.
(1) Adhesive tape (cellophane tape) was applied to the noble metal frame, and the bottom of the adhesive tape was made on the back of the noble metal frame.
(2) An uncured transparent ultraviolet curable resin was poured into the noble metal frame.
(3) An uncured transparent ultraviolet curable resin and a colorant were mixed to produce an uncured colored ultraviolet curable resin.
(4) An uncured colored ultraviolet curable resin was placed on the uncured transparent ultraviolet curable resin poured in (2) to form a pattern.
(5) Uncured ultraviolet curable resin (transparent ultraviolet curable resin and colored ultraviolet curable resin) was irradiated with ultraviolet rays to cure the ultraviolet curable resin.
(6) At the back of the noble metal frame, the adhesive tape attached to the cured ultraviolet curable resin was peeled off.
In the decorative article manufactured by the above procedure, since the colored ultraviolet curable resin is dispersed to some extent in the transparent ultraviolet curable resin in an uncured state, an unclear pattern is obtained and a desired pattern cannot be obtained. Further, since an uncured transparent ultraviolet curable resin was poured into the noble metal frame, the cured ultraviolet curable resin layer was formed thick, and the surface of the ultraviolet curable resin layer was planar. Furthermore, since the shape of the bottom formed with the adhesive tape was flat, the back surface of the decorative article was flat. As a result, the manufactured ornaments can only have a flat UV-cured resin layer in the precious metal frame, and do not express realistic expressions, emphasized patterns or vivid colors Met.

DESCRIPTION OF SYMBOLS 1 Precious metal frame 2 Ultraviolet curable resin 2A Transparent ultraviolet curable resin 2B Colored ultraviolet curable resin 3 Molding material 4 Brush 5 Ultraviolet 31 Groove 32 Application | coating surface

Claims (9)

A precious metal frame is a method of manufacturing a decorative article holding an ultraviolet curable resin,
Using a molding material made of a polymer compound having plasticity for at least a while, and in a state where the molding material is plastic, the molding material and the noble metal frame are pressed against each other, and the surface of the molding material in the noble metal frame Forming mold material mounting step to form a convex or concave three-dimensional shape as a whole from the edge of the noble metal frame,
An ultraviolet curable resin application step of applying the ultraviolet curable resin to the surface of the mold material in the noble metal frame;
An ultraviolet irradiation step of irradiating and curing the applied ultraviolet curable resin with ultraviolet rays;
A method for producing a decorative article, comprising: a peeling step of peeling the molding material from the noble metal frame and the ultraviolet curable resin. The ultraviolet curable resin application step includes a partial application step of applying at least a part of the surface of the mold material in the noble metal frame, and an overall application step of applying the entire surface of the mold material in the noble metal frame; Consists of
The said ultraviolet irradiation process is performed each time after each process of the said partial application | coating process and the said whole application | coating process, The manufacturing method of the decorative article described in Claim 1 characterized by the above-mentioned. The method for manufacturing the decorative article includes:
The decoration according to claim 1 or 2, further comprising a modeling step of modeling the molding material into a three-dimensional shape in a state where the molding material is plastic before the molding material mounting step. Product manufacturing method. In the modeling step, one or more grooves are formed on the surface of the mold material so as to be positioned in the noble metal frame,
The partial coating step is performed by applying a colored ultraviolet curable resin in which a color pigment or a dye is mixed with the ultraviolet curable resin along the groove located in the noble metal frame. A method for manufacturing decorative items. In the molding material mounting step, after making the surface of the molding material in the noble metal frame into the three-dimensional shape, forming one or a plurality of grooves on the surface of the molding material in the noble metal frame,
The said partial application | coating process apply | coats the colored ultraviolet curable resin in which the colored pigment or dye was mixed with the said ultraviolet curable resin along the said groove | channel located in the said noble metal frame. 3. A method for producing the decorative article described in 3. The ultraviolet curable resin is a methacrylate resin,
6. The decorative article according to claim 1, wherein the polymer compound having plasticity at least for a while is an ethylene α-olefin copolymer having a softening point of 60 to 80 ° C. 6. Method. The ultraviolet curable resin is a methacrylate resin,
The polymer compound having plasticity at least for a while is a mixture of a main ingredient containing polyvinylsiloxane, hydroxide polysiloxane and silicon dioxide, and a curing agent containing polyvinylsiloxane, silicon dioxide and platinum. The method for manufacturing a decorative article according to any one of claims 1 to 5, characterized in that:   The noble metal frame is formed by baking a plastic composition containing a noble metal powder composed of gold, silver, copper, platinum or an alloy thereof and an organic binder into a frame shape. The method for manufacturing a decorative article according to any one of claims 1 to 7. The ornament manufactured by the manufacturing method of the ornament described in any one of Claims 1 thru | or 8.