JP2016094320A - Method for decorating glass surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a surface decorating method for applying a pattern to glass, in which a unique color of lacquer and a reflection effect of light by metal powder or powder containing metal are added to transparent feeling that is an advantage of glass; and a glass product using the same.SOLUTION: A surface decorating method includes: subjecting a part of a surface of transparent glass to sandblast treatment so as to form a pattern on the surface, and thereby forming an engraving recessed portion of which the whole surface falls below the surface of the glass and the bottom is roughened; applying lacquer onto the surface of the glass containing the engraving recessed portion, wiping off the lacquer from the surface of the glass before the applied lacquer is cured and removing the lacquer from portions other than the engraving recessed portion; and then scattering metal powder or powder containing metal onto the lacquer remaining in the engraving recessed portion before the lacquer remaining in the engraving recessed portion is cured, and bonding the metal powder or the powder containing the metal to the lacquer. A glass product is decorated by the surface decorating method.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a glass surface decoration method, and more specifically, lacquer is applied to a sculpture concave portion subjected to a sandblast treatment, and a metal powder or a metal-containing powder is applied on the lacquer to be incident. The present invention relates to a glass surface decoration method capable of expressing a unique pattern, color, gloss, etc. depending on the amount of light or viewing angle and direction, or changes thereof.

Urushi is a natural paint made from processed sap collected from the urchinaceae.
Urushiol, etc. contained in lacquer causes an oxidative polymerization reaction in the presence of oxygen, so lacquer is cured by placing it in air at an appropriate temperature and humidity. Once cured, lacquer is very stable and is not attacked by acids, alkalis, alcohols, etc., and is resistant to heat.

  Transparent lacquer (suki urushi) is a translucent amber-colored liquid obtained by evaporating water from raw urushi collected from urushi tree, but it can be changed to black lacquer by adding iron or by adding pigments. Color lacquer can also be used, and a unique aesthetic can be expressed by painting on wood.

  For this reason, lacquerware with lacquered wood has been used for tableware and furniture since ancient times as a craft that combines toughness and beauty.

  Moreover, since lacquer has an extremely large adhesive force, it is used not only as a paint but also as an adhesive.

  In recent years, lacquer has also been applied to ceramics, metals, glass, etc., which are materials other than wood. For example, in Patent Document 1, lacquer is applied to the inside of glass products such as glass, and the lacquer is cured. After that, a decorative method is described in which lacquer is removed by scraping off part of the glass surface to form a pattern.

  When lacquer is applied to the glass surface, lacquer peeling due to poor adhesion between glass and lacquer becomes a problem. In Patent Document 2, the problem of peeling is solved by applying lacquer to the glass surface via a silicone acrylic resin layer.

Patent Document 3 describes a method in which a lacquer is left on a concavo-convex portion by forming a concavo-convex portion by sandblasting the pattern transfer portion transferred onto the glass surface and wiping and lacquering on the concavo-convex portion.
Moreover, in patent document 4, the adhesiveness of the glass surface and lacquer is improved by mix | blending a silane coupling agent with lacquer.

  Patent Document 5 describes a decorating method in which raw lacquer is applied to a processed groove formed in a workpiece and a paint is applied on the raw lacquer. In this method, raw lacquer is used as an adhesive layer for making it difficult for the applied paint to be peeled off, and the paint is sufficiently imprinted with a waste cloth or the like and dispersed in the raw lacquer.

  However, both of these conventional techniques are problematic when applying lacquer, which has been conventionally applied to wood, etc., to glass, and the peeling caused by poor adhesion between lacquer and the glass surface. It focuses on solving problems.

In the conventional technology for applying lacquer to such glass, it is necessary to apply lacquer thickly or it is affected by additives to improve adhesion, so the lacquered part loses transparency. It was gone.
In other words, the conventional technology does not realize a design that makes full use of the advantages of glass that is not transparent to materials such as wood, ceramics, and metals. The texture of the area where the lacquer was applied was not much different from the case where lacquer was applied to other materials.

  For this reason, it has been desired to develop a glass product with an unprecedented design that takes advantage of the translucency of glass and adds a unique color to lacquer.

JP 2009-263151 A JP-A-6-107435 Japanese Patent Laid-Open No. 62-187145 Japanese Patent Laid-Open No. 10-194782 JP 2004-136542 A

  This invention is made | formed in view of the said background art, The subject is providing the surface decorating method for producing the glass product of the design which made the color of the lacquer original compatible with the transparency which is an advantage of glass. And providing a glass product using the same.

  As a result of intensive studies to solve the above-mentioned problems, the present inventor can apply lacquer to the roughened portion by roughening a part of the surface of the glass. By applying metal powder or metal-containing powder on top, the light reflection effect of metal powder or metal-containing powder is added to the unique color of glass transparency and lacquer. The inventors have found that a glass product with a design can be produced, and have completed the present invention.

  That is, according to the present invention, by subjecting a part of the surface to sandblasting so as to form a pattern on the surface of the transparent glass, the entire surface is lowered from the surface of the glass, and the bottom is rough. Then, lacquer is applied to the surface of the glass including the engraving recess, and the lacquer is wiped from the surface of the glass before the applied lacquer is cured, and the lacquer is applied from other than the engraving recess. After removing, before the lacquer remaining in the sculpture recess is hardened, a metal decoration or a powder containing metal is applied to the lacquer remaining in the sculpture recess and adhered. To do.

  Moreover, this invention provides the manufacturing method of the glass product characterized by having the process of decorating the surface of glass by said surface decorating method.

  Moreover, this invention provides the glass product characterized by decorating the surface of glass by said surface decorating method.

  According to the present invention, the light reflection effect of metal powder or powder containing metal is added to the transparency of glass and lacquer and the unique color of lacquer, giving a unique pattern, color, gloss and the like. Further, it is possible to provide a glass product with an unprecedented design in which the appearance of the decorated pattern changes depending on the eye side (viewing direction) or viewing angle, how to apply light, and the like. In particular, if colored lacquer is used, the above-described effects can be made more prominent.

  Furthermore, the adhesiveness between the sculpture concave portion where the lacquer remains and the lacquer are good because the surface is roughened by a specific treatment, and the lacquer is difficult to peel off. Therefore, it is not necessary to pre-treat with a fixing agent, and it is not necessary to include a fixing agent in the lacquer.

  In addition, the sculpture recess that descends from the surface of the glass is decorated, making it easy to decorate (easy to remove lacquer other than the pattern part) and forming a tactile recess. A durable glass product can be provided for the decorative part.

Also, if the lacquer is wiped from the surface of the glass before the applied lacquer is cured, and the lacquer is applied to the engraving recesses sufficiently thinly, the lacquer will have no unevenness, adhesion will be improved, and visible light will be easily transmitted. Gives a unique sense of transmitted or reflected light.
Conventionally, lacquer has been commonly used for thick coatings, not only when the substrate is made of wood, but also when the substrate is made of glass. In order to make the unevenness inconspicuous, lacquer was applied after gold plating or the like on the entire surface. According to the surface decorating method of the present invention, since it is roughened, lacquer can be applied evenly and thinly without a base such as gold plating, and as a result, the above-mentioned unique transmitted light feeling is given. It becomes possible.

It is a schematic diagram of the cross section which shows the state in which the engraving recessed part was formed by performing the sandblast process on the surface of glass. It is a schematic diagram of the cross section which shows the state which apply | coated the lacquer on the surface of the glass containing a sculpture recessed part. It is the schematic diagram of the cross section which shows the state which wiped off the lacquer from the surface of glass, and removed the lacquer from other than an engraving recessed part. It is a schematic diagram of the cross section which shows the state which spread metal powder on the lacquer which remained in the engraving recessed part, and was made to adhere. It is a schematic diagram of the cross section which shows the state of the transmitted light and reflected light when the direction (direction) of incident light of the decorated glass is changed. It is a photograph of an example (champagne glass) of the glass product decorated by the surface decoration method of this invention. It is a photograph of an example (champagne glass) of the glass product decorated by the surface decoration method of this invention. It is a photograph of an example (champagne glass) of the glass product decorated by the surface decoration method of this invention. It is a photograph of an example (champagne glass) of the glass product decorated by the surface decoration method of this invention.

  Hereinafter, the present invention will be described. However, the present invention is not limited to the following embodiments, and can be arbitrarily modified and implemented.

<Sandblasting>
In the surface decorating method of the present invention, in order to perform decorating for forming a pattern on the surface of the transparent glass 10, a part of the surface is sandblasted.

Sandblasting is a surface processing method in which an abrasive is sprayed onto the surface of an object. In the present invention, sandblasting used for processing parts such as circuits, ICs, electronics, electricity, etc., and for decorating or engraving glass is preferably used.
When performing sandblasting in the present invention, after masking the non-processed portion, it is preferable to remove the masking material and finally wash it after shaving the glass surface by mixing and blowing the abrasive in compressed air. . Masking is preferably performed by a photoresist method, handwriting, screen printing, or the like.

  By performing such treatment, a sculpture recess 12 is formed in a part of the glass surface 11 (FIG. 1). The entire surface of the engraving recess 12 is lowered from the surface 11 of the glass, and the bottom 12a of the engraving recess is roughened as a result of sandblasting and has a ground glass shape.

In general, lacquer does not have good adhesion to glass, but the bottom 12a of the sculpture recess is roughened (there are fine irregularities), which increases the adhesion area between lacquer and glass and provides good adhesion. The hardened lacquer is difficult to peel off.
As will be described later, lacquer is applied to the surface of the glass and wiped before curing, but metal powder is applied to the surface of the lacquer remaining in the engraving recess 12 to form a decorative part on which a pattern is formed.

Regarding the depth of the engraving recess 12, it is preferable that the surface of the engraving recess 12 is lowered by 0.2 mm or more and 0.8 mm or less on the average from the surface 11 of the glass by performing a sandblast treatment. More preferably, it is lowered by 3 mm or more and 0.7 mm or less, and particularly preferably lowered by 0.4 mm or more and 0.6 mm or less on average.
If the surface of the engraving recess 12 is lowered too much from the surface 11 of the glass (if the surface of the glass is shaved too much), the engraving recess 12 is likely to be damaged when an impact is applied, or the lacquer cannot be removed sufficiently. It remains thick and may become opaque or uneven.
Conversely, if the descent of the surface of the engraving recess 12 from the surface 11 of the glass is insufficient (if the surface of the glass is shaved insufficiently), the amount of lacquer attached to the engraving recess 12 is not sufficient, Metal powder may not be sufficiently adhered.

The arithmetic average roughness Ra of the bottom 12a of the roughened engraving recess is preferably 0.005 μm or more and 20 μm or less, more preferably 0.1 μm or more and 5 μm or less, and 0.5 μm or more and 2 μm or less. It is particularly preferred.
If the arithmetic average roughness Ra is too small, the surface of the engraving recess 12 and the lacquer bonding area are not sufficiently increased, and the adhesion of the lacquer may be deteriorated and may be easily peeled off.
On the other hand, if the arithmetic average roughness Ra is too large, the thickness of the lacquer becomes uneven and unevenness may become conspicuous.

There are no particular limitations on the type and particle size of the abrasive used for the sandblasting treatment, and gold sand, silica sand, alumina, glass beads, silicon carbide, titanium oxide, diamond and the like can be suitably used.
The particle size of the abrasive used for the sandblasting treatment is not particularly limited, but is preferably 1 μm to 500 μm, more preferably 5 μm to 200 μm, and particularly preferably 10 μm to 100 μm.
There are no particular limitations on the conditions such as the pressure of the compressed air and the treatment time during the sandblast treatment, and the conditions that allow the engraving recess 12 to have the above-described depth and surface roughness are appropriately selected.

The number and arrangement of the engraving recesses 12 formed on the glass surface 11 are not particularly limited and are determined according to the type of pattern desired.
The engraving recess 12 may be formed only on one surface of the glass, or may be formed on both surfaces. When the glass constitutes a container such as a cup, glass, bowl, or dish, it is preferably formed on the outer surface of the container.
When there are a plurality of engraving recesses 12 on the surface 11 of the glass, they may be formed simultaneously by a single process, or a plurality of engraving recesses 12 may be formed for reasons such as adjusting the depth and surface roughness according to the type of pattern. You may form separately by the process of 1 time.

<Coating lacquer>
When the engraving recess 12 is formed on the glass surface 11 by sandblasting, the abrasive is removed in accordance with a conventional method so that the glass surface 11 can be applied with lacquer.

  In the surface decorating method of the present invention, lacquer 20 is applied to the surface 11 of the glass including the engraving recesses 12, and the lacquer is removed from other than the engraving recesses by wiping the lacquer from the glass surface 11 before the applied lacquer is cured. To do.

The state which applied the lacquer to the surface 11 of glass is shown in FIG. The surface 11 of the glass including the engraving recess 12 is once covered with the lacquer 20 by applying lacquer to the surface 11 of the glass with a brush, a brush, a spatula or the like.
Next, the lacquer 20 is wiped from the surface 11 of the glass with a cloth, waste cloth or the like. Before the lacquer 20 is cured, the lacquer 20 can be easily removed from the portion other than the engraving concave portion 12, but from the engraved concave portion 12 that is roughened (having fine irregularities), The lacquer 20 is not completely removed, and the lacquer 20 remains mainly in the concave portion 12b at the bottom of the sculpture concave portion (FIG. 3).
In FIG. 3, the lacquer 20 is drawn so as to exist only in the concave portion 12 b at the bottom of the engraving concave portion, but the lacquer 20 remains in other than the concave portion at the bottom of the engraving concave portion (for example, the convex portion 12 c). May be.

The lacquer 20 existing in the engraving recess 12 is sufficiently wiped off, and the amount of the lacquer 20 remaining on the bottom 12a of the engraving recess is preferably small (the lacquer 20 layer is thin).
If the amount of the remaining lacquer 20 is too large (if the layer of lacquer 20 is too thick), the transmitted light cannot pass through the lacquer 20 and a glass product having a design that makes use of the transparency unique to glass is produced. It may become impossible to achieve the task. Moreover, when there is too much quantity of the lacquer 20 which remains in the engraving recessed part 12, it may become a cause of peeling or damage of the lacquer due to physical impact or friction.
On the other hand, if the amount of the remaining lacquer 20 is too small (if the lacquer 20 layer is too thin), the lacquer effect described above may not be obtained.

The average thickness of lacquer in the engraving recess 12 or the amount of lacquer applied is preferably translucent as the entire area of the engraving recess 12. That is, the above-mentioned surface decorating method in which the engraving recess 12 in which the lacquer 20 is left and cured is translucent as the entire area of the engraving recess 12 is preferable in that the effect of the present invention described above can be easily achieved.
Furthermore, the surface decoration in which the engraving concave portion 12 in which the lacquer 20 is left to be cured and the metal powder 30 (or metal-containing powder) is then adhered is translucent as the entire area of the engraving concave portion 12. The method, in other words, the surface decoration method in which the engraving recess 12 is finally translucent as the entire area of the engraving recess 12 is preferable in that the effect of the present invention described above can be easily obtained.
Here, “semi-transparent” means transparency that allows visible light to pass therethrough but that the object existing behind appears to be blurred like frosted glass. In addition, “translucent as the entire area of the engraving recess 12” means that light is applied to almost the entire area of the engraving recess, not the transparency of the microscopic portion such as the recess 12b or the protrusion 12c at the bottom of the engraving recess. Transparency as an average when you say.

The process of applying and wiping the lacquer 20 may be performed before the lacquer 20 is cured. However, since a small amount of the lacquer 20 may remain in the engraving recess 12, it is preferably performed immediately.
Further, since the lacquer 20 is finally removed from the portion other than the engraving recess 12, it is not necessary to apply lacquer from the beginning other than the engraving recess 12 and its peripheral portion. In a very complicated case, as shown in FIG. 2, lacquer may be applied to the entire surface 11 of the glass in consideration of workability.

  The number of repetitions of lacquer application and wiping may be once or twice or more, but is preferably once. Usually, lacquer is applied and polished, and further applied and polished, but in the present invention, the number of repetitions of application and wiping may be one, and surprisingly, one time is rather, It is preferable in order not to form unevenness.

There is no limitation in particular about the kind of lacquer used for application, and raw lacquer, transparent lacquer, black lacquer, colored lacquer, and the like are used. Since various colors such as white, red, yellow, green, blue, and purple can be expressed, it is preferable to use colored lacquer.
Color lacquer is produced by adding pigments of various colors to translucent lacquer, but there is no particular limitation on the type of pigment, and only one type of pigment may be used, or two or more types of pigment may be used. You may mix and use. It is more preferable to use highly transparent color lacquer because it is rich in changes in the appearance of the pattern depending on the viewing angle and how the light is applied.

When lacquer is wiped off, the external transmittance of the glass from the side where the engraving recess 12 is not formed to the side where the engraving recess 12 is formed, and the maximum external transmittance in the visible light region. The lacquer is preferably wiped off so that the external transmittance at the indicated wavelength is 50% or more, more preferably 70% or more, and still more preferably 90% or more.
“External transmittance” refers to the transmittance of the entire material including the interface (the value obtained by dividing the radiation divergence of incident light by the radiation divergence of transmitted light).

<Adhesion of metal powder or metal-containing powder>
After applying the lacquer 20 to the surface 11 of the glass and removing the lacquer 20 from other than the engraving recess 12, the metal powder 30 (or powder containing metal) is added before the lacquer 20 remaining in the engraving recess 12 is cured. It is applied to the surface of the lacquer 20 remaining in the engraving recess 12 (FIG. 4).

  Metal powder or metal-containing powder is used to reflect light on its surface and give a unique transmitted or reflected light feel. In the present invention, metal powder may be used, or “metal-containing powder” containing components other than metal to such an extent that the light reflection effect is not impaired.

The “metal-containing powder” refers to a powder having a metal simple substance inside or on its surface. Among these, a metal provided on the surface of a film or the like by a vapor deposition method, a plating method, a sputtering method or the like is preferable.
Examples of components other than the metal contained in the metal-containing powder include colorants such as pigments and dyes; synthetic resins constituting resin films, resin binders, and the like.

  Examples of such metal-containing powders are obtained by pulverizing a film in which a deposited metal film is formed on a synthetic resin film by a vacuum deposition method, as described in JP-A-11-323223. In some cases, such a powder has a clear glitter as compared with a normal metal powder.

  There is no particular difference in effect between using metal powder and using metal-containing powder. In the following description, the term “metal powder” refers to both “metal powder” and “metal-containing powder”.

  The metal of the metal powder in the present invention or the metal of the metal-containing powder is preferably at least one metal selected from the group consisting of gold, platinum, aluminum and tin.

“Wrinkle and adhere” means that the metal powder 30 is naturally attached to the lacquer 20 by using the adhesive force of the lacquer 20 before curing by simply spreading the metal powder 30 on the lacquer 20 before curing. It means that it is attached to the top, and does not mean that the metal powder 30 is imprinted in the lacquer 20. That is, the metal powder 30 is present on the surface of the lacquer 20 remaining on the bottom 12a of the engraving recess, and is not dispersed in the lacquer 20. In that respect, the present invention is completely different from metallic coating, patent document 5 and the like, in which metal is dispersed inside the coating material or is substantially made of only metal.
When the metal powder 30 exists only on the surface of the lacquer 20, when viewed from the side where the sculpture recess is not formed, the light once transmitted through the lacquer 20 is reflected on the surface of the metal powder 30. Thus, the lacquer 20 appears bright. When the metal powder 30 is dispersed in the lacquer 20, the lacquer 20 does not look bright.

The weight average particle size of the metal powder is preferably 2 μm or more and 3 mm or less, more preferably 5 μm or more and 300 μm or less, and particularly preferably 10 μm or more and 100 μm or less.
If the weight average particle size is too large, the metal powder cannot be sufficiently adhered to the lacquer, or the distribution of the metal powder may be uneven. On the other hand, if the weight average particle diameter is too small, the effect of reflecting light by the metal powder may not be sufficiently obtained.

  The metal powder may be removed by vibration, brush, gravity, or the like from the metal powder that does not adhere due to excessive splattering. The process of removing excess metal powder may be performed either before or after the lacquer is cured.

Time, it is preferable to adhere so that 0.02 g / cm ² or more 2 g / cm ² or less, 0.05 g / cm ² or more 1 g / cm ² or less, more preferably to deposit plated the metal powder, 0 .2g / cm ² or more 0.5 g / cm ² or less is particularly preferred.
If too much metal powder is deposited, the metallic color of the metal will be too strong, and the unique color of lacquer cannot be expressed sufficiently, and the transparency will be reduced and the (semi) transparency will be lost There is. Furthermore, since there is a limit to the amount of lacquer remaining on the surface of the engraving recess, it may not adhere firmly to the surface of the lacquer.
On the other hand, if the amount of the metal powder to be adhered is too small, the metallic color of the metal cannot be expressed sufficiently, and the effects of the present invention may not be achieved.

After sowing the metal powder, the lacquer adhering to the glass product is cured by placing it in air of appropriate temperature and humidity. Typically, by setting the temperature to 15 to 25 ° C. and the humidity to about 60 to 75%, the lacquer can be cured relatively quickly.
The glass product may be left in the room or the like to cure the lacquer, or in order to maintain the temperature and humidity as described above, it may be placed in a “lacquer bath” using a spray bottle or the like to be cured.

  After curing the lacquer, the remaining glass powder and other impurities are removed to complete a glass product with a decorated glass surface.

The effect of the present invention will be described in more detail with reference to FIG.
In FIG. 5, the schematic diagram of the cross section of the decorated glass 10 is shown. In the decorated part (decoration part) of the glass 10, the lacquer 20 remains thinly on the bottom 12 a of the sculpture concave part whose surface is roughened, and on the cured lacquer 20. The metal powder 30 sown is attached.
In FIG. 5, the lacquer 20 exists only in the concave portion 12b at the bottom of the engraving concave portion, and the metal powder 30 exists on the lacquer 20 remaining on the concave portion 12b. The metal powder 30 may exist on the convex portion 12c at the bottom of the metal.

  The concave portion 12b at the bottom of the sculpture recess has a large amount of lacquer 20, and the convex portion 12c at the bottom of the sculpture recess has a small amount or no lacquer 20. The metal powder 30 sown on the lacquer 20 is densely present in the “recessed portion 12b at the bottom of the engraving recess” where the amount of the lacquer 20 is large, and the amount of the lacquer 20 is small or not present The metal powder 30 is sparse in the convex portion 12c.

As mentioned above, in the form of roughening of the bottom of the engraving recess, metal powder may be present densely or sparsely, but since the amount of metal powder attached is small, it is naturally (inevitably In some cases, there is a density. In any case, on the surface of the metal powder 30, light is specularly reflected microscopically, irregularly reflected macroscopically, and transmission of light is blocked. On the other hand, light that does not strike the metal powder 30 passes through the lacquer.
Since the decorative portion of the glass has a portion where the metal powder 30 is dense and a portion where the metal powder 30 is sparse, the effect of light reflection and the effect of transmission are combined, and the surface on the decorated side (hereinafter referred to as “Omote” When viewed from the left side in FIG. 5, and when viewed from the opposite side (hereinafter referred to as “back surface”) (when viewed from the right side in FIG. 5). By changing the viewing angle, the appearance changes and you can enjoy the various patterns.

When viewed from the front surface side, part of the light incident from the front surface side is reflected by the metal powder 30, and the metallic color of the metal powder 30 is seen as it is (front surface reflected light L1).
Moreover, a part of the light incident from the back side passes through the lacquer 20 without being reflected by the metal powder 30, and the metallic color and the transmitted color of the lacquer 20 appear to be combined (front surface transmitted light L3).

On the other hand, when viewed from the back side, a part of the light incident from the back side is once diffused by the metal powder 30 after passing through the lacquer 20 (back side reflected light L2). For this reason, when it sees from the back side, compared with the case where the metal powder 30 is not on the lacquer 20 or sparse (part), the case where the metal powder 30 is on the lacquer 20 or dense (part) However, the lacquer 20 looks bright.
Moreover, a part of the light incident from the front surface side is blocked by the metal powder 30, and the lacquer 20 is darker than the case where the metal powder 30 is not on the lacquer 20. The color looks like a combination of gray colors (back surface transmitted light L4).

  In particular, the front-surface reflected light L1 and the back-surface reflected light L2 generated by the reflection of light on the metal powder 30 on the lacquer 20 are remarkably changed by slightly changing the viewing angle.

The surface decorating method of the present invention can be applied to any glass product as long as it is strong enough to withstand sandblasting, and specifically, tableware such as cups, glasses, bowls and dishes; The present invention can be applied to glass constituting furniture such as lighting covers, display shelves, tables, windows, etc .; daily necessaries such as vases, ashtrays, figurines, candle holders, etc.
Of these, tableware such as cups, glasses, bowls or dishes is used daily and contains food and beverages, so it can take advantage of the bactericidal and antibacterial properties of lacquer. Suitable for the surface decoration method of the present invention.
Glasses and glasses can be easily picked up and moved, so you can fully enjoy the change in pattern appearance by changing the viewing angle. It is particularly suitable for the surface decoration method of the present invention.

  About the kind of glass, the surface decorating method of this invention can be applied to well-known glass, Soda glass, crystal glass, borosilicate glass, etc. are mentioned.

  When manufacturing the glass product, when decorating the surface of glass, you may decorate only by the surface decorating method of this invention, and you may decorate in combination with another decorating method.

  EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples. However, the present invention is not limited to these examples and comparative examples unless it exceeds the gist.

[Example 1]
By the method as shown below, the outer surface of a flute-type champagne glass (manufactured by fine crystal ion tempered glass) was decorated to produce a glass having a pattern formed on the surface as shown in FIG.

  A portion on the surface of the glass where the pattern was not formed was protected by attaching a masking sheet, and then the glass was placed in a sand blasting apparatus and subjected to sand blasting.

  After completion of the sandblasting treatment, the glass was taken out from the sandblasting apparatus, the masking sheet was peeled off, and it was washed thoroughly with water to remove the abrasive and the like.

  On the outer surface of the glass, dozens of sculpture recesses with cherry petal patterns were formed.

  The transparent lacquer and the red pigment were sufficiently mixed to prepare a red color lacquer (hereinafter referred to as “color lacquer A”).

  After the color lacquer A was applied to the entire outer surface of the glass in which the engraving recesses were formed by sandblasting with a brush, the color lacquer A was immediately wiped off from the surface of the glass with a cloth. It was visually confirmed that the color lacquer A did not remain in the portions other than the sculpture recesses.

  Immediately after wiping the colored lacquer A with a cloth, silver powder (Oike Imaging Co., Ltd., Elgie Neo Silver # 500) containing aluminum, pigment, and synthetic resin is used to remove the remaining colored lacquer A The surface was crushed and adhered evenly.

  After leaving it in the air and confirming that color lacquer A has hardened sufficiently, the outer surface shown in FIG. 6 is removed by removing metal powder remaining without being attached to lacquer and washing the glass. A glass with a pattern is completed.

[Example 2]
In Example 1, the pattern formed by sandblasting was changed to a pattern of young leaves instead of cherry petals; lacquer was not colored lacquer A but green mixed with transparent lacquer and green pigment A glass with a pattern formed on the outer surface shown in FIG. 7 was produced in the same manner as in Example 1 except that the color lacquer (hereinafter referred to as “color lacquer B”) was changed.

[Example 3]
In Example 1, the pattern formed by sandblasting was changed to a swallowtail butterfly wing pattern instead of the cherry petal pattern; the lacquer was changed to a transparent lacquer instead of the color lacquer A; Example 1 except that the powder spread on the surface of the lacquer was changed to a golden powder (Oike Imaging Co., Ltd., Elgeo R. Gold # 500) containing aluminum, pigment, and synthetic resin. A glass having a pattern formed on the outer surface shown in FIG. 8 was produced.

[Example 4]
In Example 3, the pattern formed by the sandblasting process was changed to a crack-like pattern instead of a swallowtail butterfly wing-like pattern, and the outer surface shown in FIG. A glass with a pattern was produced.

[Comparative Example 1]
In Example 1, after wiping colored lacquer A with a cloth, a glass having a pattern formed on the surface was produced in the same manner as in Example 1 except that silver powder was not spread on the surface of colored lacquer A. .

[Comparative Example 2]
In Example 1, instead of simply spreading silver powder on the surface of color lacquer A, using waste cloth, the same procedure as in Example 1 except that silver powder was sufficiently imprinted in color lacquer A, A glass with a pattern formed on the surface was prepared.

In any of Examples 1 to 4, the pattern looked beautiful. In addition, I was able to enjoy changes in the appearance of various patterns by changing the amount of light and changing the viewing angle by picking up the glass.
On the other hand, in Comparative Example 1, since there was no metal powder, the effect of reflecting light was not sufficiently obtained, and the pattern did not look beautiful. Also, the appearance of the pattern did not change even when the angle was changed.
Moreover, in the comparative example 2, since the powder was in the state dispersed in the colored lacquer, the pattern did not look beautiful. Moreover, the color of the lacquer was dark overall, and it looked the same when viewed from the front side and from the back side.

  The surface decoration method of the present invention gives a unique pattern, color, luster, etc., and the appearance of the decorated pattern changes depending on the viewing angle, how it is exposed to light, etc. Since glass products can be produced, it is widely used for decorating various glass products, including tableware used daily, such as cups and glasses.

DESCRIPTION OF SYMBOLS 1 Glass product 2 Decorating part 10 Glass 11 Glass surface 12 Engraving recessed part 12a Engraving recessed part bottom 12b Engraved recessed part 12c Engraved recessed part 12c Engraved recessed part 20 Lacquer 30 Metallic powder L1 Front surface reflected light L2 Back surface reflected light L3 Front surface transmitted light L4 Back surface transmitted light

Claims (8)

  By subjecting a part of the surface to sand blasting so as to form a pattern on the surface of the transparent glass, the entire surface is lowered from the surface of the glass, and the engraved concave portion whose bottom is roughened Forming and then applying lacquer to the surface of the glass including the engraving recesses, wiping the lacquer from the surface of the glass before the applied lacquer is cured and removing the lacquer from other than the engraving recesses, and then engraving the engraving A surface decoration method characterized by spreading metal powder or metal-containing powder on the lacquer remaining in the engraving recess before the lacquer remaining in the recess is cured.   The surface decorating method according to claim 1, wherein sand blasting is performed so that the surface of the engraving concave portion descends from the surface of the glass by an average of 0.2 mm to 0.8 mm.   The surface decoration method according to claim 1, wherein the lacquer is colored lacquer.   The metal of the metal powder or the metal of the powder containing the metal is at least one metal selected from the group consisting of gold, platinum, aluminum, and tin. The surface decoration method of description.   The engraving concave portion to which the lacquer is left to be cured and the metal powder or the metal-containing powder is subsequently adhered is made translucent as the entire area of the engraving concave portion. The surface decoration method according to claim.   The surface decoration method according to any one of claims 1 to 5, wherein the glass constitutes a glass, a glass, a bowl, or a dish.   A method for producing a glass product, comprising a step of decorating a glass surface by the surface decorating method according to any one of claims 1 to 6.   A glass product obtained by decorating the surface of glass by the surface decorating method according to any one of claims 1 to 6.

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