JP6538017B2 - Production method of cloisonne products - Google Patents

Description

  The present invention relates to a method for producing a cloisonne product such as accessories and daily goods miscellaneous goods having a cloisonne layer formed of cloisonne on a cloisonne or base (base material, bullion, etc.).

Cloisonne products made by cloisonne are traditionally well known as Japanese traditional crafts. The cloisonne layer formed by cloisonne has a distinctive vitreous transparency and a sense of weight, and it has a beautiful and elegant taste, with intricately changing subtle shades and gloss.
In conventional Shinobuo products, after generally polishing the surface of the base material with copper plate well, apply the color Shilohko glaze to draw various patterns on the surface, bake it and weld it, and the vitreous Shirouho layer It is made by forming

On the other hand, various accessories such as brooches, pendants, tie pins, etc. are generally made of precious metals such as gold, silver, platinum, etc. and jewels etc. For example, as seen in Patent Document 1, a cloisonne layer of cloisonne on the surface The cloisonne jewels that made it are also manufactured.
In the example described in Patent Document 1, pure silver plating is applied to the surface of accessory base material made of gold or gold alloy, and various kinds of cloisonne glazes are applied thereon and dried to some extent, and then put in a pot or furnace and fired. And formed a cloisonne layer. As a result, the color and tone of the cloisonne layer are prevented from changing over time, and the quality does not change over a long period of time.

JP, 2008-161603, A

However, as a colored cloisonne glaze used to manufacture such conventional cloisonne products such as cloisonne jewellery, a colored glass such as a material of a stained glass is melted and solidified, and then finely crushed and pulverized Many of them were made into paste form with water and funori etc.
For example, selenium is used as a pigment of glaze that obtains color development of reddish red as a cloisonne glaze with colored glass powder, but selenium is difficult to obtain because of rare earth, and there is a problem that light and shade can not be formed. there were.

Gold is used for the pigment of the glaze which obtains the color development of the pink series, but it is difficult to always obtain the desired finish color tone stably, and when it is re-baked by repair etc., the surface gloss disappears There was also the problem of becoming cloudy.
When it is going to obtain a pink color, it becomes yellowish if it is applied directly to the base material with cloisonne glaze of gold pigment, so the surface of the base material is silver-plated and the base is made with a transparent glaze called white transparent (Shirosuke). Alms are put out and pink is put out by piling up the gold pigment 's cloisonne glaze on it. Therefore, the number of processes increases, and there is a problem that air bubbles are easily mixed or broken. Moreover, it was confirmed that discoloration easily occurs, for example, the peripheral part turns brown.

  The present invention has been made to solve the above-mentioned problems for producing cloisonne products. That is, it is possible to manufacture a high-quality Shiho product in a relatively simple process, and it is easy to adjust color density and color development, and even when it is repeatedly heated, there is no loss of surface gloss or discoloration. The purpose is to be able to stably obtain a desired finish color tone, and to prevent the occurrence of air bubbles and cracks.

In order to achieve the above-mentioned object, the method for producing the product of the present invention for producing the product of the cloisonne product comprises a glazing process in which a cloisonne or ground is provided with a cloisonne glaze and dried, and the precious metal nanoparticles as a solvent on the cloisonne glaze applied The precious metal colloid application step of applying precious metal colloid dispersed in the above, and the above-mentioned cloisonne or base material is applied with a cloisonne glaze, the above-mentioned precious metal colloid is applied thereon and the semifinished product impregnated in the cloisonne glaze is fired And a firing step of forming a cloisonne layer.

By repeatedly performing the above-mentioned glazing process, the noble metal colloid application process, and the baking process a plurality of times, it is possible to control the shade of color of the above-mentioned seven treasure layer.
In the step of applying the precious metal colloid, after applying and drying the precious metal colloid on the cloisonne glaze and then applying and drying the precious metal colloid again, the color shade of the cloisonne layer may be repeated several times. Can be controlled.
The color development of the above-mentioned Seven Treasure layer can also be controlled by the type or particle diameter or particle shape of the element of the noble metal nanoparticle in the above-mentioned noble metal colloid.
When producing cloisonne jewelery and the like, it is preferable to use the above-mentioned cloisonne or base as a noble metal base such as a gold alloy, and use, as the above-mentioned precious metal colloid, gold colloid in which gold nanoparticles are dispersed in a solvent.

  According to the present invention, it is possible to produce a high-quality Shiho product in a relatively simple process, and it is easy to adjust color density and color development, and loses its surface gloss or causes discoloration even if it is repeatedly heated. In any case, the desired finished color can be obtained constantly and stably, and neither bubbles nor cracking occur.

It is a front view of the broach which shows an example of the cloisonne product manufactured by the manufacturing method by this invention. It is a typical expanded sectional view equivalent to a section which meets a XX line of Drawing 1 for explaining each process of one embodiment of this invention. It is process drawing of one Embodiment of the manufacturing method of the seven treasure product by this invention.

Hereinafter, a mode for carrying out the present invention will be specifically described based on the drawings.
FIG. 1 is a front view of a broach manufactured by the manufacturing method according to the present invention and showing an example of a cloisonne product. The cloisonne product 1 is a brooch of the accessory having a petal motif, and is a forming surface of the three-folded support part 2 and the outline edge 11 of the petal part 3 provided at each end thereof and the cloisonne layer 12 The base (base material) is made of, for example, a noble metal such as a gold alloy.
Then, a seven treasure layer 12 is formed on the glazed surface 10 a which is a region surrounded by the outline edge 11 of the substrate 10 shown in FIG. The base material that forms this cloisonne layer is also referred to as cloisonne.

(A)-(d) of FIG. 2 is a typical expanded sectional view equivalent to the cross section which follows the XX line of FIG. 1 for demonstrating each process of one Embodiment of this invention.
First, (a) shows the process of processing the base material that will be the cloisonne. In this step, a base material 10 including the contour edge 11 of the petal portion 3 together with the support portion 2 shown in FIG. 1 is made of a noble metal such as a gold alloy in this example. The support 2 and the petals 3 may be separately prepared. Here, only the production of the petals 3 will be described.

  The base 10 including the contoured edge 11 of the petals 3 and the glazed surface 10a is made by processing a noble metal material such as a gold alloy by casting, pressing, or engraving. This is a substrate processing process. At that time, an arbitrary pattern of unevenness may be formed on the glazed surface 10a. Then, when the cloisonne layer is formed by using a transparent glaze and a precious metal colloid in a later step, the pattern due to the unevenness can be seen through.

After the substrate 10 processed in this manner is annealed (baked) and annealed, the oxide film may be removed and polished until metallic gloss is obtained. Furthermore, it is desirable to carry out the degreasing treatment using a multi-layer or the like after performing the treatment suitable for the substrate 10. These are pretreatment steps to be carried out as required.
The treatment suitable for substrate 10 is, for example, when a substrate 10 is a gold-colored product, a white transparent glaze and gold colloid are used to form a cloisonne layer, and when it is desired to show orange color, only polishing treatment is sufficient. When it is desired to show it, it appears bright by applying silver plating to the substrate 10. In the case where the substrate 10 is a silver product, it is possible to make the pink color look vivid only by the polishing process.

In the next step, as shown in FIG. 2 (b), a cloisonne glaze 13 is applied on the glazed surface 10a surrounded by the outline edge 11 of the substrate 10 using a brush and a joss (Takehara) (embedded) ,dry. This is the glaze process. As the cloisonne glaze 13, it is preferable to use, for example, white transparent shirosuke, which is a colorless transparent glaze.
However, as the cloisonne glaze 13, various kinds of conventional ones can be used. That is, a translucent glaze, a white glaze, or a colored glaze containing a pigment may be used.

Next, in the noble metal colloid application step shown in (c) of FIG. 2, noble metal colloid 15 in which noble metal nanoparticles are dispersed in a solvent is applied onto Shiloh glaze 13 applied in the glazing step of (b). The applied precious metal colloid 15 penetrates into the cloisonne glaze 13.
In the precious metal colloid 15, fine particles in which the particle size of the precious metal such as platinum, gold, silver or the like is controlled to nano size (1 to 100 nm) are uniformly dispersed in a liquid which is a solvent. This is also called noble metal colloid solution or noble metal colloid liquid.

Gold colloids in which the precious metal nanoparticles are gold nanoparticles are used, for example, as reagents for antibody labeling used for testing of influenza, etc., or for medical use etc. In this example, this gold colloid may be used.
In addition, color development of the seven treasure layer can be controlled by the kind or particle diameter of the element of a noble metal nanoparticle, or a particle shape. The specific example will be described later.

  As a solvent for dispersing the noble metal nanoparticles, any solution can be used as long as the solution does not cause aggregation of the noble metal nanoparticles, such as distilled water, phosphate buffer, polyethylene glycol solution, organic solvent and the like. Furthermore, in the case where the surface of the noble metal nanoparticle is modified with amino acids so that the particles do not aggregate, the coloration is stabilized because the dispersed state is maintained more stably.

  With regard to the concentration of the precious metal colloid, it is possible to obtain light color by diluting with each solution and dark color by volatilizing the solution, based on commercially available products. As commercially available products, noble metal colloids used in immunochromatography, which is basically an antigen / antibody test method, can be used stably. For example, Sigma Aldrich, Cosmo Bio, etc. are commercially available.

In this way, a semi-finished product in which the cloisonne glaze 13 is applied to the surface of the substrate 10 (glowing surface 10a), and the precious metal colloid 15 is applied thereon and impregnated into the cloisonne glaze 13 (petal part 3 in this example) The semi-finished product is heated and fired to form a cloisonne layer 12 on the noble metal base, as shown in (d) of FIG. This is the firing step. By mixing the noble metal colloid 15 coated on the cloisonne glaze 13 to some extent before this baking step, it is possible to prevent the mixing of bubbles and obtain a clonal layer having higher transparency. Therefore, it is desirable to carry out the drying step. In particular, when the precious metal colloid 15 is to be overcoated, it is necessary to apply the precious metal colloid again after the precious metal colloid 15 previously applied has been dried to some extent.

In the firing step, a semi-finished product as shown in FIG. 2 (c) in which the cloisonne glaze 13 is applied to the surface of the base 10 and the precious metal colloid 15 is applied thereon and dipped into the cloisonne glaze 13 is shown in FIG. And the same baking time (several tens seconds to several minutes) in the same temperature zone (700 to 800.degree. C.) as in the ordinary Shilo-Oh baking process.
As a result, the cloisonne glaze 13 and the precious metal nanoparticles of the precious metal colloid 15 are integrally fused to form the cloisonne layer 12 and exhibit transparent luster and stable color development. For example, when a white glaze and a gold colloid were used, it developed a somewhat bluish pink color with higher transparency than before.

  After the formation of the cloisonne layer 12 as described above, in the finish polishing step, finish polishing such as buffing or carbon polishing is performed to complete the accessory. In the glazing process, it is recommended to grind off the portion where the cloisonne layer is formed, etc. by sticking out of the substrate 10 and removing it by charcoaling, but in that case, the small flaws will be on the surface of the cloisonine layer. It is desirable to do so to smooth the surface.

FIG. 3 is a flow chart of an embodiment of a method of manufacturing a product of the present invention according to the present invention.
As shown in FIG. 3, in the method of manufacturing the product of the present invention, as shown in FIG. 3, the steps of the substrate processing step S1, the glazing step S2, the precious metal colloid application step S3, the drying step S4, the firing step S5 and the finish polishing step S6 carry out. The contents of each step are as described above with reference to FIG.

First, in the substrate processing step S1, after processing a noble metal material such as a gold alloy into a substrate of a desired shape, for example, it is desirable to carry out pretreatment steps such as baking, polishing and degreasing as described above. This process may be a process of forming a birthplace that forms a birthplace using various materials described later.
In the next glazing process S2, as described above, a cloisonne glaze is applied to the surface of the base or the cloisonne (glazed surface) and dried.
Then, in the noble metal colloid application step S3, the noble metal colloid in which the noble metal nanoparticles are dispersed in the solvent is applied onto the cloisonne glaze applied in the glazing step S2. And it is made to dry to some extent in the drying step S4.

In this way, a semi-finished product is applied to the surface (glazed surface) of the precious metal base , and the semi-finished product coated with precious metal colloid and soaked in the Shiopo glaze 13 is put into the electric furnace at firing step S5. Heat and bake at 700 to 800 ° C. for several tens of seconds to several minutes.
As a result, the cloisonne glaze and the precious metal nanoparticles of the precious metal colloid are fused together to form a cloisonne layer on the surface of the substrate, exhibiting a transparent luster and stable color development.
Thereafter, in the finish polishing step S6, the surface of the cloisonne layer is finish-polished to complete a beautiful cloisonne product (in the above example, a broach, which is a jewellery).

  After the noble metal colloid is applied onto the cloisonne glaze in the noble metal colloid application step S3 and dried in the drying step S4, gold colloid is again obtained in the noble metal colloid application step S3 as shown by the arrow of dashed dotted line in FIG. And drying in the drying step S4 may be repeated several times. In this way, it is possible to control the shade of color due to the color development of the cloisonne layer formed by one baking. Thus, as the number of times the noble metal colloid is applied is increased, the density of the color to be developed is increased.

Alternatively, as shown by a broken arrow in FIG. 3, the surface (glazed surface) of the base or the navel is applied and dried in the glazing step S2, and the noble metal colloid is applied on the nintole glaze in the precious metal colloid application step S3. After being applied and dried in the drying step S4 and fired in the firing step S5, the tint of the cloisonne layer and the shade of color may be controlled by repeating the plication step S2 to the firing step S5 again and again. it can.
Also in this case, as the number of repetitions, that is, the number of times of applying the precious metal colloid is increased, the density of the color to be developed is increased.

In addition, as described later, the color development of the Seven Treasure layer can also be controlled by the type, particle diameter or particle shape of the element of the noble metal nanoparticles in the noble metal colloid to be applied in the noble metal colloid application step S3.
For example, when gold colloid is used, if the gold nanoparticles are spherical, the particle diameter is orange at 20 nm, pink at 40 nm, and blue-violet at 80 nm. Gold nanoparticles are colored blue when they are flat and purple when they are cylindrical. In the case where the gold nanoparticles are other than spherical, it is possible to control the color tone of color development by the thickness and size thereof. Then, even if gold colloids in which the gold nanoparticles are dispersed are applied on a Shiba Treasure glaze and fired, a Shihpo layer can be formed which develops color in the same manner as described above.

It is also possible to use noble metal nanoparticles whose elements are noble metals other than gold, for example, silver colloids such as silver or platinum colloids such as platinum (platinum). And, it is possible to control the color development of the cloisonne layer by the kind of the element of the noble metal nanoparticles in the noble metal colloid.
Basically, the color of silver colloid and platinum colloid also changes depending on the particle size and the like. Furthermore, in the case of silver colloid, it has special properties, and the desired color can be obtained by mixing silver colloids having different sizes of silver nanoparticles by toning based on the three principles of color. In the case of other precious metal colloids, mixing red and blue does not result in purple, but in the case of silver colloids it becomes purple in principle, so mixing such as a watercolor paint can be performed and gradation expression can be easily performed.

  According to such a manufacturing method of a product, it is possible to manufacture a high quality product with a relatively simple process, adjustment of color density and coloration adjustment is easy, and surface glossiness is lost even if it is repeatedly heated. There is no occurrence of discoloration, and the desired finished color taste can always be obtained stably, and neither bubbles nor cracking will occur.

Also, for example, in the case of a gold-based cloisonne jewellery, the current product in which a cloisonne layer is formed using a new pink, silver pink, or G100 (pink) glaze is somewhat yellowish pink. On the other hand, according to the invention of the present invention, in which a gold colloid is applied on a white glaze to form a cloisonne layer, it is evaluated that the product is not bluish yellowish and highly bluish pink with high transparency. I received it.
For example, silver-pink color data of the current product is defined as Light grayish red in # e1c17c5, and the color configuration is RGB (88, 78, 77) CMYK (0, 12, 12, 12). The high brightness part is # ffe0e0 and is defined as Very pale red (Pink tone).

On the other hand, the color data of the product according to the present invention is # bb87a3 and defined as Slightly desaturated pink, and its color configuration is RGB (73, 53, 64) CMYK (0, 28, 13, 27). And in a bright part, it is defined as Pale pink by # ffb8de.
The consumer tends to select the color of the accessory depending on the skin color of the user, and such difference in color is also effective in that the choice of the consumer is increased.

When manufacturing high-quality goods such as jewelry, precious metals are used as the material of the base material that will become a cloisonne. For example, gold alloys such as K24, K22, and K18 (including color differences such as white gold), pure silver, silver alloys such as Sil 925, platinum alloys such as Pt 1000 and Pt 950, and the like are used. In the case of daily necessities and decorations, other metals such as copper, iron and brass can also be used.
Alternatively, it is possible to use a cloisonne or ceramic cloisonne, a metal plating such as silver plating on the surface thereof, or a cloisonne covered with metal foil.
That is, any material can be used as the base or the cloisonne as long as it can form the cloisonne layer by the steps S2 to S5 described above with reference to FIG.

The present invention is applicable not only to the above-described wireless cloisonne but also to all cloisonne techniques such as wired cloisonne, birth cloisonne and reduced fetal pimples.
In the case of wired cloisonne, make an outline of a pattern with a noble metal such as silver wire on the ground and apply different glazes to each area divided by the outlines, or apply precious metal colloids with different colors on the glaze. Or, the number of times of application of the precious metal colloid can be changed, and subsequent baking can form a cloisonne layer having a complex pattern of plural colors.

  Tombs of Shitobu is a technique to cut through a part of the womb (base) and make it a watermark, apply transparent glaze to it, and form a common Shinobu layer on other parts. In that case, a stable transparent conception can be created by baking the thin transparent cloisonne layer on the watermark portion using the surface tension of the transparent glaze's moisture, and then placing the desired glaze on it.

  For example, a technique for forming a cloisonne layer by patterning a copper wire (base) with a silver wire, for example, corroding the copper wire with acid to remove it, leaving only the silver wire and the cloisonne part surrounded by it. It is. The present invention can also be applied to the production of such a cloisonne product. The jewelry (jewelry) manufactured in this way has the same image as the precious stone clasped with metal.

  Specific examples of cloisonne products that can be manufactured according to the present invention include accessories and jewelry such as brooches, pendants, earrings, earrings, finger rings, necklaces, bracelets, tie pins, cuffs, clasps, hair decorations, bandages and the like. However, the present invention can be applied to a wide range of cloisonne products including daily necessities and accessories such as compacts, watches, glasses, hand mirrors, photo frames, writing instruments (such as ballpoint pens and fountain pens).

1: Product of seven treasures (Brooch) 2: Support part 3: Petals 10: Substrate 10a: Glazed surface 11: Contour edge 12: Seven treasure layer
13: Shiokara glaze 15: precious metal colloid

Claims (5)

A glazing process that applies a Shiloh glaze on the Shiloh birthplace or base and dries it,
A noble metal colloid applying step of applying a noble metal colloid in which a noble metal nanoparticle is dispersed in a solvent on the cloisonne glaze applied in the glazing step;
A firing step of applying the cloisonne glaze on the cloisonne or base, applying the precious metal colloid thereon, and firing the semifinished product soaked in the cloisonne glaze to form a cloisonne layer;
A method of producing a cloisonne product characterized by having:   The method according to claim 1, wherein the shade of the color of the cloisonne layer is controlled by repeating the glazing step, the noble metal colloid coating step, and the baking step a plurality of times.   In the step of applying the precious metal colloid, after applying and drying the precious metal colloid on the cloisonne glaze and repeating applying and drying the precious metal colloid again and again, the color shade of the cloisonne layer is obtained. The method for producing a cloisonne product according to claim 1, wherein the method is controlled.   The color development of the said seven treasures layer is controlled by the kind or particle diameter, or the particle shape of the element of the precious metal nanoparticle in the said precious metal colloid, The manufacture of the seven treasures goods as described in any one of Claim 1 to 3 characterized by the above-mentioned. Method. The above-mentioned cloisonne or base is a precious metal base such as a gold alloy,
The product according to any one of claims 1 to 4, wherein the noble metal nanoparticle is a gold nanoparticle, and the noble metal colloid is a gold colloid in which the gold nanoparticle is dispersed in a solvent. Production method.

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