JP5865155B2 - Container-shaped molded body and its coating method - Google Patents

Description

  The present invention relates to a container-shaped molded body having high design properties and a method for coating the container-shaped molded body.

  2. Description of the Related Art Conventionally, as examples of highly designable containers such as cups, those having different colors on the inner side and the outer side have been widely used. In such a container, one in which either the inner surface or the outer surface directly represents the color of the base material of the container as it is and only the other surface is painted with another color is known. Moreover, what coated each surface of the inner side and the outer side of a container with a different color is known.

  Conventionally, as another example of a highly designable container such as a cup, one having a metallic color has been widely used. In such a container, when the base material of the container is not made of metal, a method of painting either the inner side or the outer side of the container, or both sides with a metallic color can be considered. However, it is difficult to give a deep luster to metallic colors. For example, even if it is a metal container, since the light is not irregularly reflected, a deep glitter is not given. Furthermore, in non-metal containers, it is necessary to coat the painted surface after painting in a metallic color, which reduces the texture of the metallic color and gives it a deep radiance. More difficult.

  Conventionally, as a container having a high design property in a container such as a cup, a transparent material such as glass is widely used. However, when a coating material that cures at room temperature is applied to a glass container, it is difficult to ensure adhesion to glass and physical properties of such a coating material. For this reason, the designability in a glass container tends to be required for the material and shape of the glass. Thus, in a glass container, there exists a problem that it is difficult to provide the designability by coating.

  As a coating method for solving the above-mentioned problem, a technique for improving adhesion between a resin paint and glass by forming a silicone acrylic resin layer has been proposed (see Patent Document 1). In addition, the surface of glassware is sandblasted or treated with hydrogen fluoride and then processed into frosted glass, then applied with lacquer blended with a silane coupling agent, or undercoated with silane coupling agent and then applied with lacquer. Has been proposed (see Patent Document 2).

  In addition, as a coating method for solving the above problems, a method is proposed in which an isocyanate-based silane coupling agent is mixed with lacquer to be coated and cured at room temperature to give strong adhesion to a glass substrate. (See Patent Document 3).

  Japanese Patent Laid-Open No. 06-107435   Japanese Patent Laid-Open No. 10-194782   JP 2009-183903 A

  However, in the above-described prior arts of Patent Documents 1 and 2, for example, when coated on transparent glass, the silicone acrylic resin primer layer and the sandblasting treatment are exposed when viewed from the opposite side of the painted surface. There is a problem that the design property as a product is impaired, and the design to be expressed is greatly restricted even in the production stage.

  Moreover, in the prior art of patent document 3 mentioned above, only the design in the coating surface of lacquer can be disclosed, and there is no disclosure about the design which utilized the material characteristic of the base material called glass. For this reason, there exists a problem that the diversity of a design will be restrict | limited.

  An object of the present invention is to provide a container-shaped molded body having high designability and a method of coating the container-shaped molded body in order to eliminate the above-described problems caused by the prior art.

  In order to solve the above-described problems and achieve the object, the present invention employs the following configuration.

  The container-shaped molded body according to the present invention comprises two surfaces, an inner side and an outer side, and one of the two surfaces has a metal appearance, and the other surface has a different appearance from the metal. The container-like formed body is a molded body made of a transparent base material having a predetermined thickness, and the appearance of the metal on the one surface is a glitter coated with a transparent binder on the other surface. An appearance different from that of the metal on the other surface caused by the paint containing the material is caused by an overcoating paint applied via a concealing layer on the paint containing the glitter material on the other surface. . Here, the metal appearance is a metallic color, typically a color represented by a paint including a glittering material.

  Moreover, the container-like molded object concerning this invention is characterized by the glitter material of the coating material containing the said glitter material containing at least one among metal flakes with a particle size of 10-30 micrometers, and interference mica.

  In the container-shaped molded body according to the present invention, the other surface is an outer surface of the base material, and the top coat is any one or more of an epoxy resin, a polyurethane resin, a UV curable resin, and a UV curable lacquer. The main resin component is a paint that reacts and cures at room temperature after coating.

  Further, the container-shaped molded body according to the present invention is characterized in that the UV-cured lacquer comprises, as essential components, purified lacquer, at least one of a photopolymerizable monomer and an oligomer, a photopolymerization initiator, and an antioxidant. It is a photopolymerizable lacquer paint obtained by using a lacquer composition in which particles of a rubbery material and a nitrogen-containing material contained in are dispersed to an average particle diameter of 1 μm or less.

  Moreover, the coating method of the container-shaped molded body according to the present invention comprises two surfaces, an inner side and an outer side, and one of the two surfaces has a metal appearance, and the other surface is different from the metal. A method for painting a container-like molded body having an appearance, wherein a transparent binder is applied to the one surface of a transparent base material having a predetermined thickness, and then a paint containing a glittering material is applied, and It is characterized in that a paint to be a concealing layer is applied and finally a top coat is applied.

  Moreover, the coating method of the container-shaped molded object concerning this invention is characterized by the said transparent binder having a polyester resin as a main component.

  Further, in the method for coating a container-shaped molded body according to the present invention, the coating material used as the concealing layer is a colored enamel coating material, and the colored enamel coating material has a dry film thickness of 50 μm or less after coating and a concealing rate of 85. % Or more.

  Moreover, the coating method of the container-shaped molded body concerning this invention is characterized by the glitter material of the coating material containing the said glitter material containing at least one among metal flakes with a particle size of 10-30 micrometers, and interference mica.

  Further, in the method for coating a container-shaped molded body according to the present invention, the other surface is an outer surface of the substrate, and the top coat is any one of an epoxy resin, a polyurethane resin, a UV curable resin, and a UV curable lacquer. It is characterized in that it is a paint that has one or more main resin components and reacts and cures at room temperature after coating.

  Moreover, the coating method of the container-shaped molded object concerning this invention is the said UV hardening lacquer, refined lacquer, at least one among a photopolymerizable monomer and an oligomer, a photoinitiator, and an antioxidant are essential components. And a photopolymerizable lacquer paint obtained by using a lacquer composition in which particles of a rubbery material and a nitrogen-containing material contained in the lacquer are dispersed in an average particle diameter of 1 μm or less.

  Moreover, the coating method of the container-shaped molded object concerning this invention is characterized by irradiating 200-450 nm ultraviolet-ray, after coating the said UV cured resin or the said UV cured lacquer with an inkjet.

  In the container-shaped molded body and the coating method thereof according to the present invention, a paint containing a glittering material and a top coat are coated on only one of the two surfaces inside and outside the transparent container-shaped molded body. This allows the glittering material to be seen through the transparent substrate from the other uncoated surface, causing the diffused reflection of the glittering material, resulting in shadows and three-dimensionality in the metallic tone, resulting in a deep glittering effect. A feeling can be realized. Therefore, there is an effect that high designability can be imparted to the container-shaped molded body in combination with the color of the top coat.

  In the container-shaped molded body and the coating method thereof according to the present invention, a paint containing a glittering material is applied to the container-shaped molded body through a transparent binder. Thereby, since the adhesion of the coating material and the physical properties of the coating film can be secured even for the glass substrate, the workability in painting can be improved. In addition, the top coating material is applied on the coating material containing the glittering material via a concealing layer. As a result, the glitter material and the top coat can be prevented from affecting each other, and the high designability of the container-like molded product can be maintained.

  It is a photograph which shows an example of the container-shaped molded object concerning this Embodiment.   It is a perspective view which shows the container-shaped molded object concerning this Embodiment.   It is sectional drawing which shows the cross section of the container-shaped molded object concerning this Embodiment.   It is a photograph which shows the container-shaped molded object which coated the coating material containing the brilliant material A.   It is a photograph which shows the container-shaped molded object which applied the coating material containing the brilliant material B. FIG.   4 is a photograph showing a container-like molded body coated with a paint containing a bright material C.

  Exemplary embodiments of a container-shaped molded body and a coating method thereof according to the present invention will be described below in detail with reference to the accompanying drawings.

(An example of a container-shaped molded body)
First, an example of a container-shaped molded body according to this embodiment will be described. FIG. 1 is a photograph showing an example of a container-shaped molded body according to the present embodiment. In FIG. 1, an example of a container-shaped molded body is a glass cup 10. The glass cup 10 has different colors on the inner side 11 and the outer side 12. The inner side 11 is a metallic tone color represented by a paint including a glittering material. When the light hits, the inner side 11 is glossy and shaded to give a deep glittering feeling. The outer side 12 is a color represented by the lacquer paint, and it feels a sensual and elegant moist texture unique to lacquer. As described above, the glass cup 10 can express two different colors on the inner side 11 and the outer side 12 and realizes high designability.

(Basic configuration of container-shaped molded body)
Next, the basic configuration of the container-shaped molded body according to the present embodiment will be described with reference to FIG. FIG. 2 is a perspective view showing the container-like molded body according to the present embodiment. In FIG. 2, the container-like molded body 20 is made of a transparent base material and has an inner surface 21 and an outer surface 22. The transparent substrate is, for example, glass or plastic.

  The container-shaped molded body 20 has different colors on the inner surface 21 and the outer surface 22. The color seen from one surface is a metallic tone color, and the color seen from the other surface is a metallic tone color different from the metallic tone color seen from one surface. Here, the metallic tone color seen from one surface is generated from the paint containing the glittering material, and the metallic tone color different from this is generated from the top coat. The top coat in FIG. 1 is a lacquer paint.

  In the container-shaped molded body 20, the paint representing the colors of the inner surface 21 and the outer surface 22 is applied to any one of the inner surface 21 and the outer surface 22. For example, in the glass cup 10 of FIG. That is, in the glass cup 10, the color of the metal visible on the inner side 11 is such that the paint including the glitter material painted on the outer side 12 is seen through the glass. The lacquer paint visible on the outer side 12 is applied to the outside of the paint containing the glittering material. In the present embodiment, only the inner surface 21 may be painted.

  In the container-shaped molded body 20, since the transparent base material needs to show the metallic color of the glitter material on the side opposite to the painted surface, it is preferable to have a predetermined transparency. Therefore, in the case of glass, clear glass is preferable to soda glass with low transparency. In the case of plastic, an acrylic material having relatively transparency is preferable.

Moreover, in the container-shaped molded object 20, a transparent base material has predetermined thickness. By utilizing the irregular reflection of light caused by the thickness of the transparent base material, the metallic color of the glittering material is deepened. As long as the transparent base material does not obscure the color, a thicker one is preferable because irregular reflection tends to occur.

  In addition, in the container-shaped molded body 20, when the paint including the glitter material and the top coat are applied to different surfaces of the inner surface 21 and the outer surface 22, respectively, the metal color of the glitter material is transparent. It will not be visible through the substrate. In this case, the coating is applied on the paint containing the glittering material. However, since the coating is thin, irregular reflection of light due to the thickness of the transparent substrate hardly occurs, and the color is not deepened. Further, in this case, both sides are coated and coating is performed, which increases the number of processes, which is troublesome.

  In this Embodiment, the container-shaped molded object 20 contains the substantially cylindrical thing from which an inner surface and an outer surface can be visually recognized, and a substantially concave article. In this case, the shade is not limited to a container such as a cup for containing things, but may be a shade in a lighting fixture that does not contain anything. In the case of a shade, if the glitter material coated on the outer surface 22 can be seen from the inner surface 21 of the shade, the metallic color of the glitter material changes depending on the illumination color and illuminance, so the design is improved. To do.

(Coating method for container-shaped molded product)
Next, the coating method of the container-shaped molded body concerning this invention is demonstrated using FIG. FIG. 3 is a cross-sectional view showing a cross section of the container-like molded body according to the present embodiment. FIG. 3 is a cross-sectional view showing a state in which the AA cross section of the container-like molded body 20 in FIG. 2 is viewed from the direction of the arrow. In FIG. 3, the mouth portion 30 of the container-shaped molded body 20 has an inner surface 21 and an outer surface 22 of the container-shaped molded body 20. The outer surface 22 is a surface after the paint is applied to the outer surface 31 of the base material 32 of the container-shaped molded body 20.

  The coating method of the container 20 is characterized in that four layers are formed on the outer surface 31 of the base material 32 of the container 20. The four layers are laminated in the order of the binder layer 33, the glitter layer 34, the concealing layer 35, and the top coat layer 36 from the layer close to the outer surface 31 of the substrate 32.

  In the present embodiment, light incident from the inside of the container-shaped molded body 20 reflects the second glittering layer 34, whereby design properties such as a metallic feeling can be obtained. In addition, the light from the inside of the container-shaped molded body 20 does not affect the design of the outermost top coating layer 36 of the container-shaped molded body 20 due to the third concealing layer 35. On the outer surface 22, the color of the top coating composed of a resin component is expressed as it is. For example, when the top coat is UV-cured lacquer, the outer surface 22 of the container-like molded body 20 expresses a moist and moist texture of lacquer.

  In the coating method of the container-shaped molded body 20 according to the present embodiment, as a first step, a transparent binder is coated on the outer surface 31 of the base material 32 of the container-shaped molded body 20, and the binder layer is formed as the first layer. 33 is formed. Thereby, the glitter material of the glitter layer 34 and the container-shaped molded body 20 can be attached.

  The coating material used in the coating process of the transparent binder is a transparent coating material that absorbs little light after drying, and can be used without any problem as long as the adhesion between the container-shaped molded body 20 and the second bright layer 34 can be secured. Examples thereof include modified acrylics, polyesters, modified polyethers, modified polyurethanes and modified epoxy resins having a phosphoric acid group, a carboxylic acid group, an amide group, a hydroxyl group and the like.

  The transparent binder in the present embodiment preferably contains a polyester resin as a component. Polyester resin, for example, can increase the adhesion between the glitter material and the container-shaped molded body 20 in the state of a thin film as compared with other transparent binders such as urethane, fluorine, and silicon, and has heat resistance and cold resistance. Have.

  It is also possible to obtain a binder paint by adding a silane coupling agent to an existing clear paint. Specific examples of the silane coupling agent include vinyltris (βmethoxyethoxy) silane, vinyltriethoxysilane, vinylmethethoxysilane, γ-methacryloxypropyl-trimethoxysilane, β (3,4-epoxycyclohexylethyltri). Methoxysilane, γ-glycidoxypropyltrimethoxysilane, N-β (aminoethyl) γ-aminopropyl (trimethoxy) silane, N-β (aminoethyl) γ-aminopropyl (methyldimethoxy) silane, N-phenyl-γ -Aminopropyltrimethoxysilane, γ-chloropropyltrimethoxysilane and the like.

  For the coating of the transparent binder, ordinary coating methods such as brush, air spray, flow coat, shower coat, and ink jet paint can be applied.

  As a second step, a paint containing a glittering material is applied on the binder layer 33, and the glittering layer 34 is formed as the second layer. Thereby, it becomes possible to improve the designability of the inner surface 21 of the container-shaped molded body 20.

  For the paint containing the glittering material used in the present invention, a conventional commercial product containing a glittering material such as an aluminum pigment, a mica pigment, a pearl mica pigment having a titanium oxide layer, a mica pigment having a plating layer such as silver, etc. should be used. Can do. In this case, the average particle size of the glittering material is desirably 10 to 30 μm. When the average particle diameter of the glitter material is smaller than 10 μm, a sufficient metallic feeling cannot be obtained, and when it is larger than 30 μm, the glitter material is difficult to be oriented in parallel in the coating film, and a sufficient metallic feeling cannot be obtained.

  Further, it is desirable that the glittering material contains 10 to 50% by weight in the paint with respect to 100 parts by weight of the resin of the paint. If the amount of the glittering material is less than 10% by weight, a sufficient metallic feeling cannot be obtained, and even if it contains more than 50% by weight, the amount is too large to be oriented in parallel in the coating film, and a sufficient metallic feeling is obtained. I can't get it.

  In the coating method according to the present embodiment, the glittering material includes at least one of metal flakes and interference mica. In this case, the metal flakes are at least one kind of metal flakes such as aluminum flakes and stainless steel flakes. By mixing metal flakes and interference mica, or by mixing different metal flakes, the glitter material itself has a deep metallic color.

  A normal coating method such as brush, air spray, flow coat or shower coat can be applied to the paint containing the glitter material, but spray paint such as air spray is preferable because it can be applied relatively easily and uniformly.

  As a third step, a paint is applied on the glitter layer 34 to form a concealing layer 35 as the third layer. In this case, the paint is preferably a colored enamel paint. The colored enamel paint is applied at 10 to 50 μm (dry film thickness). As a result, the colored enamel paint functions as a concealment layer 35 that prevents the top coat paint from affecting the glitter layer 34, so that only a metallic feeling can be obtained through the base material 32.

  The colored enamel paint used in the present invention includes inorganic pigments such as titanium white, iron oxide (yellow, bengara), and carbon, and organic pigments such as phthalocyanine blue, green pigment, quinacridone, and azo red pigment. -It is necessary that the concealment ratio after drying (JIS K 5600) is 85% or more, preferably 90% or more. When the concealment rate is less than 85%, the design of the glitter layer 34 expressed through the base material 32 is easily influenced by the top coating layer 36, and when the top coating layer 36 is close to a transparent clear, the metallic feeling is significantly impaired. Further, the appearance seen from the outer surface 22 of the container 20 is also easily influenced by the glittering material, and it becomes difficult to obtain a deep finish.

  A normal coating method such as brush, air spray, flow coat or shower coat can be applied to the colored enamel paint, but spray paint such as air spray is preferable because it can be applied relatively easily and uniformly.

  As a fourth step, finally, a top coat is applied on the masking layer 35, and a top coat layer 36 is formed on the fourth layer. Thereby, it becomes possible to improve the finishing property of the outer surface 22 of the container-shaped molded body 20. When the container-shaped molded body 20 is a container such as a cup, it is washed and used many times. Therefore, the top coat used in the present invention needs to have fastness such as water resistance and detergent resistance. For this reason, the top coat is a paint whose main resin component is a resin that reacts and cures at room temperature after coating, and one or more of epoxy resin, polyurethane resin, UV curable resin, and UV curable lacquer. Preferably there is.

  The epoxy resin coating is a type of coating in which a main component including a resin having an epoxide group and a curing agent component including a compound having an amine group are generally mixed immediately before coating. The polyurethane resin mainly contains an acrylic resin or polyester resin having a hydroxyl group, and a compound having an isocyanate group in the curing agent. A UV (ultraviolet) curable resin consists of a prepolymer, monomer, photopolymerization initiator, and additive, and cures when irradiated with light having a wavelength of 200 to 450 nm, that is, ultraviolet rays for a short time (several seconds to several tens of seconds). It is a synthetic resin.

  UV-cured lacquer contains purified lacquer, photopolymerizable monomer and / or oligomer, photopolymerization initiator, antioxidant as essential components, and rubber and nitrogen-containing particles contained in lacquer have an average particle size of 1 μm. Below are the paints dispersed. For example, a photopolymerizable acrylate monomer or oligomer and a photopolymerization initiator are blended in lacquer with an average particle size of 1 μm or less proposed in a patent document (Japanese Patent Laid-Open No. 2009-242731), and curing is accelerated by UV irradiation after coating. It is possible to significantly improve the drying property and increase the productivity.

  A normal coating method such as brush, air spray, flow coat, and shower coat can be applied to the top coating, but spray coating such as air spray is preferable because it can be applied relatively easily and uniformly.

  In the coating method of the container-shaped molded body 20 according to the present invention, in the fourth step, UV-curable resin or UV-cured lacquer may be applied as an overcoat paint by inkjet and then irradiated with 200 to 450 nm ultraviolet rays. Thereby, it becomes possible to obtain a more advanced design such as a delicate pattern. For example, it is possible to print a digital image of a computer directly on the outer surface 22 of the container-shaped molded body 20 in a short time by injecting and painting three primary colors of red, blue and yellow from an inkjet nozzle.

Hereinafter, the Example of the coating method of the container-shaped molded object 200 concerning this invention is shown. However, the scope of the present invention is not limited to these examples.

The binder layer 33 is coated on the outside of a glass cup degreased with lacquer thinner in advance with a polyester resin transparent binder “New Adhesive Binder M” (trade name) of Kansai Paint Sales Co., Ltd. The measurement was performed at a level of m ² (dry film thickness 5 μm). The glass cup was allowed to stand at room temperature for 5 minutes, and then dried with a dryer at about 80 ° C. for 30 minutes.

The coating of the glitter layer 34 is performed by air spraying an acrylic resin-based metallic paint “Eco Lacquer Metallic Base Nakame” (trade name) of Union Paint Co., Ltd. at a level of about 70 g / m ² (dry film thickness 20 μm). I did it. The glass cup was left at room temperature for 5 minutes, and then dried for 20 minutes with a dryer at about 50 ° C.

The hiding layer 35 was applied at a level of about 90 g / m ² (dry film thickness 25 μm) by air spraying a urethane resin paint “Aresletan Black” (trade name) of Kansai Paint Sales Co., Ltd. The glass cup was allowed to stand at room temperature for 5 minutes, and then dried with a dryer at about 50 ° C. for 30 minutes.

The top coat layer 36 is coated by polishing a glass cup with # 400 water-resistant abrasive paper, and then spraying the urethane resin paint “Alesle Tank Rear” (trade name) of Kansai Paint Sales Co., Ltd. with an air spray of about 100 g / The measurement was performed at a level of m ² (dry film thickness 20 μm). The glass cup was allowed to stand at room temperature for 5 minutes, and then dried with a dryer at about 80 ° C. for 30 minutes. Thereafter, the glass cup was further polished with # 800 to # 1000 polishing paper, and then “Alesle Tank Rear” (trade name) was similarly painted and dried to finish.

  As a result, the glass cup had a metallic design on the inner surface 21 and an elegant, deep and calm finish on the outer surface 22. The glass cup of Example 1 obtained in this way was immersed in warm water at 60 ° C. for 24 hours, then dried at room temperature for 2 hours, and adhesion was confirmed by a cross-cut adhesion test (conforming to JIS K 5600). The result was good.

The process from the coating of the binder layer 33 to the coating of the concealing layer 35 was obtained in the same manner as in Example 1. Paint top coat layer 36 is, after polishing the glass cup with waterproof abrasive paper # 400, the air spray cashew (Ltd.) UV curing resin "Cashew UV TXL635 Clear" (trade name), about 80 g / ^{m 2} It was performed at a level of (dry film thickness 10 μm). Thereafter, UV of 200 to 450 nm was irradiated, and again, “Cashew UV TXL635 Clear” (trade name) was coated in the same manner and finished by UV irradiation. Thereby, the glass cup excellent in the designability and finish property similar to Example 1, and the adhesiveness after 60 degreeC warm water was obtained.

The process from the coating of the binder layer 33 to the coating of the concealing layer 35 was obtained in the same manner as in Example 1. The top coating layer 36 is coated by polishing a glass cup with # 400 water-resistant abrasive paper, and then using an air spray, the photopolymerizable lacquer coating obtained by the method of Example 9 described in JP-A-2009-242731. The measurement was performed at a level of 80 g / m ² (dry film thickness 10 μm). Then, 200-450 nm UV was irradiated, and also after photopolymerizable lacquer coating was applied in the same manner, UV irradiation was performed to finish. Thereby, the glass cup excellent in the designability and finish property similar to Example 1, and the adhesiveness after 60 degreeC warm water was obtained.

  Instead of the glass cup, a commercially available plastic cup was subjected to the same coating process as in Example 3 to obtain a plastic cup with high design properties. Thereby, the plastic cup excellent in the designability and finish like Example 1 and the adhesiveness after 60 degreeC warm water was obtained.

(Comparative Example 1)
The bright layer 34 was directly applied to the outside of the glass cup degreased with lacquer thinner without applying a transparent binder. Except for this, the coating process was carried out in the same manner as in Example 2 to obtain a cup with high design properties. Thereby, although the outstanding design property and finish property similar to Example 1 were obtained, as a result of the adhesion test after 60 degreeC warm water, coating-film peeling was seen.

(Comparative Example 2)
During the coating process of Example 2, the concealing layer 35 was applied directly on the binder layer 33 without applying the glitter layer 34. Except for this, the coating process was performed in the same manner as in Example 2. Thereby, although the glass cup excellent in the adhesiveness after 60 degreeC warm water was obtained and the graceful finish was able to be obtained in the outer surface 22 of the glass cup, there is no design feeling of the inner surface 21, but the outside Finished in the same color as the surface 22 of the.

(Comparative Example 3)
During the coating process of Example 3, the photopolymerizable lacquer coating was applied directly on the glitter layer 34 without applying the concealing layer 35. Except for this, the same coating process as in Example 3 was performed. Thereby, although the glass cup excellent in the adhesiveness after 60 degreeC warm water was obtained, about the design nature of the cup inner surface 21 and the outer surface 22, there is also the influence of transmitted light, and a calm design feeling is obtained. Not.

(Comparative Example 4)
The same coating as that in Example 1 was performed until the masking layer 35 was coated. As a result, a glass cup having excellent adhesion after hot water at 60 ° C. and a high metallic design was obtained. However, since the outer surface 22 of the glass cup is a general paint film, an elegant finish is obtained. Not.

(Difference in design properties due to glitter materials)
Next, the difference in the design property by the glitter material will be described with reference to FIGS. FIG. 4 is a photograph showing a container-like molded body to which a paint containing the glitter material A is applied. FIG. 5 is a photograph showing a container-like molded body to which a paint containing the glitter material B is applied. FIG. 6 is a photograph showing a container-like molded body to which a paint containing the glitter material C is applied. 4 to 6, the glitter materials A, B, and C differ in the amount of specific types of metal flakes contained in the glitter material.

  In FIG. 4, the glitter material A is the glitter material in which the amount of use of a specific type of metal flakes is the smallest. The metallic color that appears on the inner surface 41 of the glass container 40 has little shading and no depth of glitter.

  In FIG. 5, the glitter material B is a glitter material in which the amount of specific metal flakes used is greater than that of the glitter material A. The metallic color appearing on the inner surface 51 of the glass container 50 has a shadow but is blurred, so that the depth of glitter is insufficient. In FIG. 6, the glittering material C is the glittering material having the largest usage amount of the specific metal flakes. The metal color appearing on the inner surface 61 of the glass container 60 has a clear shadow, so that it feels deep in glitter. As described above, when the inner surface of the container is uneven, the depth of the metallic tone of the glittering material is well understood.

  As described above, in the present embodiment, the container-shaped molded body 20 and the coating method thereof are paints that include a glittering material on only one of the two inner and outer surfaces of the transparent container-shaped molded body 20. And the top coat. This allows the glittering material to be seen through the transparent substrate from the other uncoated surface, causing the diffused reflection of the glittering material, resulting in shadows and three-dimensionality in the metallic tone, resulting in a deep glittering effect. A feeling can be realized. Therefore, high designability can be imparted to the container-shaped molded body 20 in combination with the color of the top coat.

  In the container-shaped molded body and the coating method thereof according to the present invention, a paint containing a glittering material is applied to the container-shaped molded body through a transparent binder. Thereby, since the adhesion of the coating material and the physical properties of the coating film can be secured even for the glass substrate, the workability in painting can be improved. In addition, the top coating material is applied on the coating material containing the glittering material via a concealing layer. As a result, the glitter material and the top coat can be prevented from affecting each other, and the high designability of the container-like molded product can be maintained.

  In the present embodiment, the glittering material includes at least one of metal flakes having a particle diameter of 10 to 30 μm and interference mica. Mixing causes a change in the color of the metal, and the dispersibility of the glittering material increases due to atomization, so that the metallic color is further diffusely reflected to produce shadows and three-dimensional effects, realizing a deep glittering feeling Can do.

  Further, in the present embodiment, the glittering material is made visible from the inner surface 21 of the container-shaped molded body 20. As a result, the color of the liquid put into the container-shaped molded body 20 causes irregular reflection while changing the color of the metal, so that a shadow and a three-dimensional appearance of a color different from when no liquid is contained appear, and there is a depth. You can enjoy the change of glitter.

  In the present embodiment, a paint that is cured at room temperature and has a main resin component of any one of an epoxy resin, a polyurethane resin, a UV curable resin, and a UV curable lacquer that has high adhesion to the base material is applied. I did it. Thereby, since a coating material can be made to adhere even if there are no processes, such as baking, it does not take time and effort and can improve workability. Moreover, in this Embodiment, it hardened at normal temperature and it was made to coat these resin coatings which have the high adhesiveness to a base material on the outer surface 22 of a container. Thereby, even if a container contacts another thing at the stage of a painting operation | work, since a coating material can be made hard to peel off, workability | operativity can be improved.

  Moreover, in this Embodiment, it was made to use the photopolymerizable lacquer coating using the lacquer composition disperse | distributed to 1 micrometer or less by the average particle diameter for top coat. Thereby, since a crosslinking density becomes high and can form a film with a thin film, lacquer can be hardened at the speed of a second unit, and workability | operativity can be improved. Moreover, since the particle | grains of a lacquer composition are fine and an unevenness | corrugation is hard to be made on a coating surface, a glossiness comes out on a coating surface and the characteristic of lacquer becomes easy to appear. In addition, secondary decorations such as lacquer work become easy, and various techniques can be expressed.

  Further, in the present embodiment, after coating the transparent binder on the outer surface 22 of the container-shaped molded body 20, a paint containing a glittering material is applied, and then a colored enamel paint is applied, and finally, The top coat was applied. Thereby, two different colors, a metal color and at least one color or pattern, can be easily applied to the transparent container-shaped molded body 20. Therefore, a design having a deeper color can be provided with fewer steps.

  Moreover, in this Embodiment, the transparent binder used the polyester resin as a component. Thereby, even if a transparent binder is in the state of a thin film, since the adhesiveness of a luster material and the container-shaped molded object 20 can be improved, the workability | operativity of coating can be improved.

  Further, in this embodiment, the dry film thickness after application of the colored enamel paint is set to 50 μm or less, and the concealment rate is set to 85% or more. Thereby, since the glitter layer and the top coat layer are surely concealed, the glitter material and the top coat can be prevented from affecting each other, and high designability can be maintained.

  In the present embodiment, UV curable resin or UV curable lacquer as a top coat is applied by inkjet and then irradiated with ultraviolet rays. Thereby, since the top coat is dried at room temperature in a short time, it can be dried without worrying about adhesion of dust after coating, and workability can be improved. Moreover, since a delicate pattern or a digital image of a computer can be painted, a higher degree of design can be obtained.

DESCRIPTION OF SYMBOLS 20 Container-shaped molded object 21 Inner surface 22 Outer surface 31 Outer surface of timber 32 Glass base material 33 Binder layer 34 Bright layer 35 Concealing layer 36 Top coat layer

Claims (11)

It consists of two surfaces, an inner side and an outer side, and one of the two surfaces has a metal appearance, and the other surface has a different appearance from the metal,
The container-shaped molded body is made of a transparent base material having a predetermined thickness,
The appearance of the metal on the one surface is caused by a paint containing a glitter material painted on the other surface via a transparent binder,
The appearance of the other surface different from the metal is caused by a top coating material applied through a concealing layer on the paint containing the glitter material on the other surface ,
A container-like molded product, wherein the concealing rate of the concealing layer is 85% or more .   2. The container-like molded body according to claim 1, wherein the glitter material of the paint containing the glitter material includes at least one of metal flakes having a particle diameter of 10 to 30 μm and interference mica. The other surface is an outer surface of the substrate;
2. The overcoating material according to claim 1, wherein the overcoating material comprises one or more of epoxy resin, polyurethane resin, UV curable resin, and UV curable lacquer as a main resin component, and reacts and cures at room temperature after coating. Or the container-shaped molded object of 2.   The UV-cured lacquer contains purified lacquer, at least one of a photopolymerizable monomer and oligomer, a photopolymerization initiator, and an antioxidant as essential components, and rubber and nitrogen-containing particles contained in the lacquer. The container-shaped molded article according to claim 3, which is a photopolymerizable lacquer paint obtained by using a lacquer composition dispersed in an average particle diameter of 1 µm or less. It consists of two surfaces, an inner side and an outer side, and one of the two surfaces has a metal appearance, and the other surface has a different appearance from the metal.
On the one surface of the transparent substrate having a predetermined thickness, coating a transparent binder, then coating a paint containing a luster pigment, further, as contrast ratio of the hiding layer is 85% or more A method for coating a container-shaped molded article, wherein a paint to be a concealing layer is applied, and finally a top coat is applied.   The coating method according to claim 5, wherein the transparent binder contains a polyester resin as a main component. The paint to be the concealing layer is a colored enamel paint,
The colored enamel paint, coating method of claim 5 or 6, wherein a dry film thickness after coating is characterized der Rukoto below 50 [mu] m.   The coating method according to any one of claims 5 to 7, wherein the bright material of the paint containing the bright material includes at least one of metal flakes having a particle diameter of 10 to 30 µm and interference mica. The other surface is an outer surface of the substrate;
6. The overcoating material is a coating material that reacts and cures at room temperature after coating, using at least one of epoxy resin, polyurethane resin, UV curable resin, and UV curable lacquer as a main resin component. The coating method according to any one of -8.   The UV-cured lacquer contains purified lacquer, at least one of a photopolymerizable monomer and oligomer, a photopolymerization initiator, and an antioxidant as essential components, and rubber and nitrogen-containing particles contained in the lacquer. The coating method according to any one of claims 5 to 9, wherein the coating method is a photopolymerizable lacquer coating obtained by using a lacquer composition dispersed in an average particle size of 1 µm or less.   The coating method according to any one of claims 5 to 10, wherein the UV curable resin or the UV curable lacquer is applied with an inkjet, and then irradiated with ultraviolet rays of 200 to 450 nm.