JP2011088408A - Decoration member and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decoration member that achieves a new appearance representation by more easily performing penetration to the member; and to provide a method for manufacturing the decoration member. <P>SOLUTION: The method for manufacturing the decoration material includes: a low expansion coefficient material forming step 81 that forms a low expansion coefficient material whose expansion coefficient is lower than that of a base material on the base material; a penetration forming step 82 that forms penetration into the low expansion coefficient by expanding the base material; and a coating application step 83 that applies a coating material to the low expansion coefficient material and coating. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a decorative member for improving the appearance of the member and a method for manufacturing the decorative member.

  In recent years, functions of electronic devices are becoming saturated in the market of electronic devices such as mobile phones. Therefore, in the market, design for electronic devices is required more than ever. Among them, there is an increasing demand for electronic devices with a design that has a real feeling and a high-class feeling. Recently, a method of expressing as if using the real thing by giving a pseudo texture to the housing is being established.

  For example, Patent Document 1 describes a coating structure of a device body such as a mobile phone. The coating structure described in Patent Document 1 performs a mirror finish on the surface of a device made of a synthetic resin molded product so as to be glossy, and forms a paint layer having a color as a base color. A transparent or translucent resin film mixed with glittering metal particles such as aluminum or nickel is integrally formed on the paint layer. In this way, a texture like a brightness metal is expressed.

  On the other hand, in the world of pottery, there is known a method of expressing a pattern by forming penetrations on the surface of the vessel. For example, Patent Document 2 describes a method for manufacturing a penetrating dyed crest ceramic. In the manufacturing method described in Patent Document 2, a glaze having a high shrinkage rate and easy penetration is applied to an unbaked base, and main baking is performed at a high temperature. Fine cracks are generated by cooling after the main baking. Then, a dye or pigment is infiltrated into the crack to form a network-like penetrating pattern.

  Patent Document 3 describes a decorative plate that is decorated by inkjet printing. The decorative plate described in Patent Document 3 is manufactured by applying an ultraviolet curable paint on the back surface of a transparent resin base material such as an acrylic resin, and further applying the paint on the cured upper layer. Thus, since it can decorate by multiple times of printing, a more complicated and delicate decoration can be given with respect to a base material.

JP 2000-349874 A (paragraph 0005) JP 2001-163688 A (paragraphs 0018 to 0024) JP 2009-34958 A (paragraphs 0019, 0022 to 0023)

  Moreover, the method shown below can be considered as a general method which performs a decoration process with respect to the decorating board (housing | casing) back side surface of a mobile telephone. FIG. 4 is an explanatory diagram showing a general method for performing a decoration process on a member. First, a multilayer metal film 72 is deposited on the base material 71 (multilayer film deposition). By coating the base material 71 with the metal film 72 in this way, a brightness feeling is expressed. Then, the ink 73 is printed on the metal film 72 for basic color development.

  However, with this method and the coating structure described in Patent Document 1, even if a high luminance feeling is expressed, it is only planar, and compared with an object that gives an image of a real feeling or luxury feeling such as jewelry or antiques. There was a big difference.

  Moreover, even if it is going to generate | occur | produce in the member surface using the method described in patent document 2 in the member used for the housing | casing of a general electric product, the said member is used for the main baking of ceramics. Such a very high temperature (1240 ° C. to 1270 ° C.) cannot be raised. That is, it is difficult to generate penetration into a decorative member of a general electric product using the manufacturing method described in Patent Document 2. In addition, as represented by the method for producing ceramics described in Patent Document 2, in order to generate penetration in the ceramics, it is necessary to perform main baking at a very high temperature and go through a cooling process. After all, it cannot be said that penetration can be easily generated.

  Therefore, an object of the present invention is to provide a decorative member that allows a new appearance expression by causing penetration more easily into the member, and a method for manufacturing the decorative member.

  The method for producing a decorative member according to the present invention includes a low expansion coefficient member forming step of forming a low expansion coefficient member having a lower expansion coefficient than the base material on the base material, and a low expansion coefficient by expanding the base material. It includes a penetration forming step for forming a penetration in the member, and a paint application step for applying a paint to the low expansion coefficient member and the penetration.

  The decorative member according to the present invention penetrates the low expansion coefficient member by expanding the base material and a low expansion coefficient member forming step of forming a low expansion coefficient member having a lower expansion coefficient than the base material on the base material. It is characterized by being manufactured by a manufacturing method including a penetration forming process for forming a coating material and a paint application process for applying a paint to the low expansion member and the penetration.

  According to the present invention, it is possible to generate a new appearance by generating penetration of a member more easily.

It is process drawing which shows one Embodiment of the manufacturing method of the decorating member by this invention. It is explanatory drawing which shows the example of the method of generating penetration. It is explanatory drawing which shows the example of the minimum structure of the manufacturing method of the decorating member by this invention. It is explanatory drawing which shows the general method which performs the decoration process on the surface of a member.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Here, intrusion generally refers to fine cracks that appear on the surface of a ceramic bowl. However, in the following description, penetration means not only wrinkles but also fine cracks (microcracks) formed on members such as ink, vapor deposition film, dye, and plating.

  Drawing 1 is a flowchart showing one embodiment of a manufacturing method of a decoration member by the present invention. First, the acrylic plate 11 which is a base material having a high coefficient of thermal expansion has a thermal expansion (shrinkage) rate lower than that of the base material, and is a hard UV curable ink (hereinafter referred to as UV (UltraViolet) curable ink). 12 is printed so as to be in close contact (FIG. 1A). Next, a pattern is added on the surface by performing pseudo-emboss printing 13 using UV ink on the upper layer of the UV curable ink 12 (FIG. 1B). Further, a dichroic film 14 is deposited on the upper layer of the pseudo embossed printing 13 by dichroic vapor deposition (hereinafter, dichroic is sometimes referred to as dichroic), and brightness is generated on the surface (FIG. 1C). A curing process (for example, an ultraviolet irradiation process) is performed after the UV curable ink 12 is printed or after the pseudo embossed printing 13 to cure the UV curable ink 12 and the pseudo embossed printing 13.

  Then, by increasing the temperature in the drying process, which is one of the printing and dichroic vapor deposition processes, the penetration S of about 1 μ to 5 μ is reduced to 0 for the UV curable ink 12, the pseudo embossed printing 13 and the dichroic film 14. A random mesh is formed at a pitch of 0.01 mm to 1 mm (FIG. 1 (d)). Then, the ink 15 for developing the basic color is printed (FIG. 1E). Here, the ink 15 printed on the upper layer of the dichroic film 14 for developing the basic color also has an effect of preventing corrosion (oxidation) of the dichroic film 14. Further, the printing of the ink 15 may be referred to as press printing.

  Here, when the temperature of the acrylic plate 11 and the UV curable ink 12 is increased, the substrate expands, but the shape of the resin of the substrate (for example, the acrylic plate 11) is not impaired, and the substrate is heated to a temperature that promotes print curing. The temperature of the resin may be increased. It is desirable to raise the temperature to about 80 ° C. in order to promote the printing curing without damaging the shape of the resin.

  FIG. 2 is an explanatory diagram showing an example of a method for generating penetration. By applying heat in the state shown in FIG. 2, the acrylic plate 11 as the base material expands left and right in the direction of the arrow. On the other hand, the printed UV curable ink 12 has a thermal expansion coefficient lower than that of the base material, and thus does not have flexibility enough to follow the expansion of the base material (low flexibility). Therefore, in the UV curable ink 12 illustrated in FIG. 2, the penetration S is generated in a slit shape. In this way, the heat treatment, which is a process in which the expansion of the UV curable ink 12 does not follow the expansion of the acrylic plate 11, is performed, and the UV curable ink 12 and the acrylic plate 11 are expanded to penetrate the UV curable ink 12. Can be formed.

  The cut surface (penetration S) of the UV curable ink 12 generated in this way makes it possible to provide a large number of light reflection points in various directions. That is, a high brightness feeling can be expressed by providing a large number of light reflection points in various directions formed in this way.

  In addition, since the unevenness can be emphasized by the mirror effect of the dichroic film 14, the penetration S can express a luxury design such as a gem or an antique. In particular, the dichroic film 14 (sometimes referred to as a dichroic multilayer vapor deposition film) has a sense of brightness and tends to look strong in contrast, so that fine uneven changes can be well copied to the human eye.

  Furthermore, according to the present embodiment, since the penetration S is also generated in the pseudo-embossed printing 13 expressing the uneven pattern, the brightness on the surface can be increased and the three-dimensional pattern can be emphasized.

  The decoration member by this invention can be utilized for electronic devices, such as a mobile telephone. In addition, the decorative member according to the present invention can be used for products utilizing design, such as an illumination tree.

  In the above description, the case where the acrylic plate 11 is used as a base material and the UV curable ink 12 is used as a member to be printed on the base material has been described. However, the member used for the base material and the member printed on the base material are not limited to the acrylic plate and the UV curable ink. The combination is not limited as long as there is a difference in thermal expansion (shrinkage) rate between the members to be used (the substrate and the member to be printed).

  The means for forming a layer on the substrate is not limited to printing. Coating, chemical / electrodeposition, plating, dipping, or the like may be used as means for forming a layer on the substrate. The base material is not limited to a resin material such as an acrylic resin. Other materials may be used as long as they can form a layer of metal, plant, fiber, paper, ceramic, or the like on the surface. For example, a layer may be formed on a base material by applying a primer to an acrylic resin such as PMMA (Poly (methyl methacrylate)) and printing UV curable ink thereon.

  Moreover, the method of expressing a high brightness feeling is not limited to the case where the dichroic film 14 is printed by dichroic vapor deposition. The method of expressing a high brightness feeling is not limited to vapor deposition (single layer, multilayer) of a metal film or the like, but expresses a high brightness feeling using mirror ink, vapor deposition foil, high brightness pigment, dye, plating, etc. Also good. In addition, since it is possible to reflect light in many directions by penetration, it is possible to express a high brightness feeling without depositing a dichroic film. However, a higher brightness feeling can be expressed by vapor deposition of a metal film or the like.

  As described above, in the method for producing a decorative member according to the present invention, penetration is generated by a mechanism using the difference between the expansion rate and the elongation limit. In the present embodiment, a case has been described in which the difference between the thermal expansion coefficients is used and a load due to temperature is applied to each member (that is, heat treatment is performed) to cause penetration. However, the method of generating penetration is not limited to the method of applying a load due to temperature as long as the difference between the expansion rate and the elongation limit can be used. For example, penetration may be generated by applying moisture or an electric shock to each member, adding a bending process, or growing each member.

  Moreover, you may adjust the member to expand. Specifically, the member to be expanded may be adjusted by adjusting the cause of expansion, selection of material, and changing the aspect ratio of expansion. By adjusting in this way, penetration to be generated can be adjusted.

  In addition, coating such as printing performed on the base material may be performed on the back side surface of the base material, or may be performed on the front side surface of the base material. When performed on the surface of the substrate, the tactile sensation can be changed by penetration.

  As described above, according to the present embodiment, the UV curable ink 12 having an expansion rate lower than that of the acrylic plate 11 is formed on the acrylic plate 11, and the expansion of the UV curable ink 12 follows the expansion of the acrylic plate 11. The penetration S is formed in the UV curable ink 12 by expanding the UV curable ink 12 and the acrylic plate 11 by performing a heat treatment that is not performed. Then, the ink 15 is printed on the UV curable ink 12 and the penetration S. Therefore, the penetration S can be more easily generated in the UV curable ink 12 and a new appearance can be expressed.

  Further, not only the UV curable ink 12 but also the embossed printing 13 or the dichroic film 14 may be deposited on the UV curable ink 12 to form the penetration S, and then the ink 15 may be printed. In this way, by performing the pseudo emboss printing 13, it is possible to give a three-dimensional effect to the member and to enhance the unevenness and brightness. Further, by performing vapor deposition of the dichroic film 14, it is possible to increase brightness and emphasize unevenness.

  That is, according to the present invention, a base material and a coating having a difference in thermal expansion (shrinkage) rate are used, and by applying a load depending on temperature, penetration occurs in the coating layer that does not follow the elongation of the base material. . Therefore, the cooling process for generating penetration is unnecessary, and penetration can be easily generated.

  In addition, as a result of the penetration, unlike the planar reflection, the penetration portion reflects various light. Therefore, a three-dimensional image different from the conventional one can be expressed, and by realizing a large number of bright spots, it is possible to realize an expression full of luxury and novelty in appearance. Specifically, by generating fine penetration, it achieves a three-dimensional effect and at the same time realizes a high-intensity feeling from various directions and can express designs such as antiques and jewelry, thus improving the design. .

  Furthermore, according to the present invention, by providing a large number of light reflection points in various directions, it is possible to make the human eye feel high brightness and unevenness. The structure gives an image of high-quality surfaces and materials like jewelry and antiques, and can change the electronic products such as mobile phones to high-grade ones.

  Next, the example of the minimum structure of the manufacturing method of the decorating member by this invention is demonstrated. FIG. 3 is an explanatory view showing an example of the minimum configuration of the method for manufacturing a decorative member according to the present invention. The method for producing a decorative member according to the present invention includes a low expansion coefficient member (for example, UV curable ink) having a lower expansion coefficient (for example, thermal expansion coefficient) on a base material (for example, acrylic plate 11) than the base material. 12) forming a low expansion coefficient member 81 (for example, FIG. 1 (a)) and an intrusion forming process 82 for forming a penetration (for example, penetration S) in the low expansion coefficient member by expanding the base material. For example, FIG. 1 (d)) and a paint application process 83 (for example, FIG. 1 (e)) for applying a paint (for example, ink 15) to the low expansion coefficient member and the penetration are included.

  With such a configuration, it is possible to generate a new appearance by causing the member to more easily penetrate.

  In addition, the manufacturing method of the decorating member as shown below at least is also disclosed in any of the embodiments described above.

(1) Low expansion coefficient for forming a low expansion coefficient member (for example, UV curable ink 12) having a lower expansion coefficient (for example, thermal expansion coefficient) on a base material (for example, acrylic plate 11) than that of the base material A member forming step (for example, FIG. 1 (a)), a penetration forming step (for example, FIG. 1 (d)) for forming a penetration (for example, penetration S) in the low expansion coefficient member by expanding the base material, A method for manufacturing a decorative member, comprising: a low expansion coefficient member; and a coating application step (for example, FIG. 1E) for applying a coating material (for example, ink 15) to the penetration.

(2) Forming a low expansion coefficient member having a lower coefficient of thermal expansion than the base material on the base material in the low expansion coefficient member forming step, and expanding the base material by heat treatment in the penetration forming step. The manufacturing method of the decorating member which forms penetration in a low expansion coefficient member.

(3) The manufacturing method of the decorating member which forms a low expansion coefficient member whose thermal expansion coefficient is lower than the acrylic resin base material on an acrylic resin base material at a low expansion coefficient member formation process.

(4) In the low expansion coefficient member forming step, an ultraviolet curable paint (for example, UV curable ink) whose expansion coefficient is lower than that of the base material is formed on the base material, and in the penetration forming step, the base material is expanded. The manufacturing method of the decorating member which forms penetration to an ultraviolet curable coating material by making it.

(5) A method for producing a decorative member including a pseudo emboss printing step (for example, FIG. 1B) for further performing pseudo emboss printing (for example, pseudo emboss printing 13) on a low expansion coefficient member.

(6) A method for producing a decorative member including a dichroic vapor deposition step (for example, FIG. 1C) for further performing dichroic vapor deposition (for example, vapor deposition of the dichroic film 14) on the low expansion coefficient member.

  The present invention is suitably applied to a decorative member for improving the appearance expression of the member.

11 Acrylic plate 12 UV curable ink 13 Pseudo emboss printing 14 Dichroic film 15 Ink S Penetration

Claims (12)

On the base material, a low expansion coefficient member forming step of forming a low expansion coefficient member having an expansion coefficient lower than that of the base material;
An intrusion forming step of forming an intrusion in the low expansion coefficient member by expanding the substrate;
A method for producing a decorative member, comprising: the low expansion coefficient member; and a paint application step of applying a paint to the penetration. In the low expansion coefficient member forming step, a low expansion coefficient member having a thermal expansion coefficient lower than that of the base material is formed on the base material,
The method for manufacturing a decorative member according to claim 1, wherein in the penetration formation step, penetration is formed in the low expansion coefficient member by performing a heat treatment to expand the base material. The method for producing a decorative member according to claim 2, wherein in the low expansion coefficient member forming step, a low expansion coefficient member having a thermal expansion coefficient lower than that of the acrylic resin base material is formed on the acrylic resin base material. In the low expansion coefficient member forming step, an ultraviolet curable paint having an expansion coefficient lower than that of the base material is formed on the base material,
The method for producing a decorative member according to any one of claims 1 to 3, wherein a penetration is formed in the ultraviolet curable paint by expanding a base material in the penetration formation step. The method for producing a decorative member according to any one of claims 1 to 4, further comprising a pseudo emboss printing step of performing pseudo emboss printing on the low expansion coefficient member. The manufacturing method of the decorating member of any one of Claims 1-5 including the dichroic vapor deposition process which further performs dichroic vapor deposition on a low expansion coefficient member. On the base material, a low expansion coefficient member forming step of forming a low expansion coefficient member having an expansion coefficient lower than that of the base material;
An intrusion forming step of forming an intrusion in the low expansion coefficient member by expanding the substrate;
A decorative member manufactured by a manufacturing method including the low expansion coefficient member and a paint application step of applying a paint to the penetration. In the low expansion coefficient member forming step, a low expansion coefficient member having a thermal expansion coefficient lower than that of the base material is formed on the base material,
The decorative member according to claim 7, wherein in the penetration forming step, penetration is formed in the low expansion coefficient member by performing a heat treatment to expand the base material. The decorative member according to claim 8, which is manufactured by forming a low expansion coefficient member having a thermal expansion coefficient lower than that of the acrylic resin base material on the acrylic resin base material in the low expansion coefficient member forming step. In the low expansion coefficient member forming step, an ultraviolet curable paint having an expansion coefficient lower than that of the base material is formed on the base material,
The decorating member according to any one of claims 7 to 9, wherein in the penetration forming step, penetration is formed in the ultraviolet curable paint by expanding the base material. The decorative member according to any one of claims 7 to 10, which is manufactured by further performing pseudo emboss printing on a low expansion coefficient member. The decorative member according to any one of claims 7 to 11, wherein the decorative member is manufactured by further performing dichroic vapor deposition on the low expansion coefficient member.

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