JP2008284878A - Ornamental body and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive ornamental body which facilitates a change in specification, prevents a space to occur between the casing and the ornamental body to reduce deterioration in appearance and is free from variation in external appearance and tone even after a long period use, and to provide a manufacturing method for the ornamental body. <P>SOLUTION: The ornamental body 10 comprises a silicone rubber processed product 11, a colored silver layer 12 to be combined with the silicone rubber processed product 11, a carrier layer 13 to be adhered on the colored silver layer 12, a fixing double-sided adhesive tape 14 to be adhered on the carrier layer 13, and an optional mold release layer releasably adhered on the double-sided adhesive tape 14, wherein a coloring agent of 0.0005 to 4 pts.wt. is added to silicone rubber to process the silicone rubber processed product 11 to semitransparent state. Then, the required number of ornamental bodies 10 are tightly fitted to the screw holes of the casing body of a cellular phone or the like, covering the screw to improve a design property and to arrange appearance, thus displaying metallic gloss which creates high-grade feeling. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a decorative body provided in a mobile phone, a PDA, a game machine, a digital camera, and the like, and a manufacturing method thereof.

  The foldable mobile phone 1 shown in FIGS. 15 and 16, the foldable game machine 2 shown in FIG. 17, and the digital camera 3 of FIG. 18 are configured by a housing 4 using various materials typified by resin. Although various members such as a printed circuit board are built in, the decorative body 10 is one of the important members as in the case 4.

This type of decorative body 10 is formed into a predetermined shape using, for example, a resin or urethane elastomer, and colored so as not to cause an uncomfortable feeling with the appearance of the foldable mobile phone 1, game machine 2, and digital camera 3. By attaching to the screw hole 5 of the case 4 of the mobile phone 1, the case 4 of the game machine 2, and the screw hole 5 of the case 4 of the digital camera 3, the assembly screw is covered so that the design is possible. This prevents the occurrence of collision noise when folding the body as a cushion or as a cushion (see Patent Documents 1 and 2).
JP 2006-73599 A JP 2002-349532 A

Since the conventional decorative body 10 is formed using a resin or a urethane elastomer as described above, there are the following problems.
First, in the case where the decorative body 10 is made of resin, a dedicated mold must be newly produced each time the model of the mobile phone 1 or the like is changed. In addition, the surface may be required to be embossed, but this will affect the mold releasability, making it difficult to apply freely as designed, resulting in high costs and easy specification changes. There is no problem.

  Further, when the decorative body 10 is made of a urethane-based elastomer having flexibility or elasticity, the appearance can be improved by tightly fitting the screw holes 5 of the housing 4 without any gaps. In the case of a resin that does not have flexibility or elasticity, it is necessary to design so that a certain degree of clearance can be secured. Therefore, when the decorative body 10 is inserted into the screw hole 5 of the housing 4, a gap may be generated between the screw hole 5 and the decorative body 10, which may deteriorate design and appearance.

  Further, when the decorative body 10 is made of urethane elastomer, it is excellent in durability, but lacks chemical resistance and light resistance. Therefore, the use of the mobile phone 1 or the like in a place where coffee, oil, alcohol or the like exists, Long-term use of the telephone 1 or the like may change the appearance and color tone and impair the beauty.

  The present invention has been made in view of the above, facilitating the change of specifications, preventing the occurrence of a gap between the housing and the decorative body, reducing the possibility of deteriorating appearance, and, for example, for long-term use. Another object of the present invention is to provide an inexpensive decorative body and a method for producing the same that are less likely to change the appearance and color tone.

In order to solve the above-described problems, the present invention includes a processed silicone rubber and a colored silver layer having a total light transmittance of less than 5% combined with the processed silicone rubber, and is provided in a casing of an electronic device. Because
The processed silicone rubber is characterized by being processed semitransparently by adding 0.0005 to 4 parts by weight of a colorant to silicone rubber.

A carrier layer bonded to the colored silver layer can be included.
Moreover, the double-sided adhesion layer adhere | attached on either a colored silver layer and a carrier layer can be included.

Moreover, in order to solve the said subject in this invention, it is a manufacturing method of the decorative body of Claim 1, 2, or 3,
0.0005 to 4 parts by weight of an inorganic pigment having a base flake coated with a metal oxide is added to silicone rubber, a vulcanizing agent, and a colorant to form a blend, and this blend is vulcanized and molded. The colored silver layer is bonded, and then the molded product and the colored silver layer are processed into a predetermined shape.

  Here, the silicone rubber processed product in the claims is formed into a predetermined shape such as a plane circle, an ellipse, a rectangle, a polygon, a C-shape, an I-shape, an L-shape, a U-shape, and various symbols as necessary. can do. The electronic device includes at least a portable information terminal typified by a mobile phone, a PDA, a game machine, a digital camera, and the like. Further, the carrier layer is not particularly limited to a plurality.

  According to the present invention, there is an effect that the specification can be easily changed and the possibility that a gap is generated between the housing and the decorative body can be prevented and the appearance may be deteriorated. In addition, there is an effect that it is possible to provide an inexpensive decorative body that is less likely to change the appearance and color tone even when used for a long time. In addition, the combination of a translucent silicone rubber processed product and a colored silver layer allows multiple reflections to be used, so in addition to the decorative color, it reproduces a metallic glossy expression with little change over time. Excellent design, attractive design, fashion, profound feeling, etc. can be obtained.

If a carrier layer bonded to the colored silver layer is provided, the necessary rigidity can be imparted to the decorative body by changing the material, thickness, number, etc. of the carrier layer.
Furthermore, if a double-sided adhesive layer that adheres to either the colored silver layer or the carrier layer is provided, the decorative body can be easily attached to the casing of the electronic device, and the decorative body can be removed easily. It becomes possible to prevent.

  DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings. A decorative body 10 according to the present embodiment includes a translucent silicone rubber processed article 11 having a good touch as shown in FIGS. The thin colored silver layer 12 combined with the silicone rubber processed product 11, the thin carrier layer 13 adhered to the colored silver layer 12, the thin double-sided tape 14 for fixing adhered to the carrier layer 13, and the And an optional release layer 15 that is releasably adhered to the double-sided tape 14, and is provided from the outside to the housing 4 of the mobile phone 1 or the like that is a small electronic device, and the screw holes 5 for assembling the housing 4. The required number is tightly fitted to cover the screw to adjust the design and appearance, and express a metallic gloss that gives a sense of luxury and high-class.

  As shown in FIG. 1 to FIG. 3, FIG. 6 and the like, the processed silicone rubber 11 is a substantially triangular plane whose corners are chamfered by adding a colorant to, for example, flexible or elastic silicone rubber. And has a hardness of 20Hs to 85Hs, preferably 80Hs ± 5Hs. Examples of the silicone rubber include silicone elastomers excellent in heat resistance, cold resistance, chemical resistance, light resistance, weather resistance, compression set characteristics, embossing characteristics, and the like.

  The hardness of the silicone rubber processed product 11 is in the range of 20Hs to 85Hs. However, when the hardness is less than 20Hs, it is difficult to obtain the product because there is almost no product. This is because it hinders manufacturing and is easy to tear.

  A colorant consists of dyes and pigments of various chromatic colors (red, blue, yellow, etc.) and achromatic color (black, etc.), for example, and 0.0005-4 weight part is added. The reason why this colorant is added by 0.0005 to 4 parts by weight is that when the amount of the colorant added is less than 0.0005 parts by weight, the coloration of the processed silicone rubber 11 cannot be confirmed. . On the contrary, when the added amount of the colorant exceeds 4 parts by weight, the transparency of the processed silicone rubber 11 is lost, and the surface of the silver exhibiting the reflective function of the colored silver layer 12 cannot be confirmed. Because.

  The colored silver layer 12 is formed by, for example, laminating and integrating an aluminum foil on the surface of a resin film made of a thin PET film or the like having a low light transmittance, or by depositing a number of metals such as aluminum on the surface of the PET film by vacuum deposition or the like. It is formed by vapor deposition or the like with a thickness of one hundred to several thousand angstroms, and the total light transmittance is less than 5%. The reason that the total light transmittance of the colored silver layer 12 is less than 5% is that when the total light transmittance exceeds 5%, the multiple reflection effect necessary for obtaining metallic gloss is reduced.

  As the carrier layer 13, for example, a clear thin PET film is used as shown in FIG. 2 and the like, and functions to ensure the rigidity of the decorative body 10. Further, as the double-sided tape 14, as shown in FIG. 3 and the like, for example, a white translucent thin acrylic tape is raised, and the function of sticking to the head of the screw screwed into the screw hole 5 of the housing 4 is provided. To do. As the release layer 15, for example, a clear thin PET film is used as shown in FIGS. 4 and 5, and is used as a mount during manufacture.

  In the above, when the decorative body 10 is manufactured, first, a vulcanizing agent and 0.0005 to 4 parts by weight of a vulcanizing agent are added to the silicone rubber to form a temporary sheet 16 that becomes the silicone rubber processed product 11. The sheet 16 is cut into a predetermined size, and the sheet 16 is hot-pressed and vulcanized.

After the sheet 16 is hot-pressed and vulcanized in this way, it is subjected to secondary vulcanization to form a complete sheet 16, and the colored silver layer 12 is adhered to the sheet 16 with an adhesive, and then the colored silver layer 12 is adhered to the sheet 16. Sequentially laminates and bonds the carrier layer 13 and the double-sided tape 14, and then processes the laminate 16 of the sheet 16, the colored silver layer 12, the carrier layer 13, and the double-sided tape 14 into a predetermined shape and size by punching or the like. If so, a plurality of decorative bodies 10 can be manufactured.
After the plurality of decorative bodies 10 are manufactured, the plurality of decorative bodies 10 can be transported or shipped by arranging them in a predetermined pattern on the release layer 15.

  According to the above configuration, since the decorative body 10 is not made of resin, it is not necessary to newly manufacture a dedicated expensive mold every time the model of the mobile phone 1 or the like is changed. Therefore, the cost can be increased and the specification can be easily changed. In addition, since the decorative body 10 is made of a silicone elastomer having flexibility and elasticity, embossing is facilitated, and there is no gap between the screw hole 5 of the housing 4 and the decorative body 10. There is no risk of deterioration in sex or appearance.

  In addition, since the decorative body 10 is not a urethane elastomer, but is made of a silicone elastomer having excellent chemical resistance, light resistance, weather resistance, compression set characteristics, etc., the mobile phone 1 etc. in a place where coffee, oil, alcohol, etc. are present And long-term use of the mobile phone 1 or the like, there is no risk that the appearance and color tone will change and the aesthetics will be impaired.

  In addition, according to the present embodiment, it is possible to reproduce metallic glossy expression with little change over time and obtain excellent design and design. When this point is explained in detail, when a film printed in a metallic tone and a urethane-based elastomer are laminated, the change over time is large, and thus it may be difficult to reproduce a glossy expression in a metallic tone over a long period of time. There is.

  On the other hand, according to the present embodiment, the combination of the translucent silicone rubber processed product 11 and the colored silver layer 12 can use multiple reflections, so that not only simple colors for decoration, It is possible to easily reproduce metallic glossy expression with little change over time, and to obtain extremely excellent design, attractive design, fashion, profound feeling and the like. Furthermore, since the elastic silicone rubber processed material 11 is used instead of the resin decorative body 10, the impact acting on the housing 4 when the mobile phone 1 or the like is dropped can be attenuated, absorbed, or alleviated to some extent. Thereby, damage prevention of the mobile phone 1 etc. can be expected.

  Next, FIGS. 8 to 14 show a second embodiment of the present invention. In this case, the colored silver layer 12 is adhered on the molded sheet 16 and the colored silver layer 12 is adhered to the molded sheet 16. The carrier layer 13 and the double-sided tape 14 are sequentially laminated and bonded (see FIG. 8), and the laminate 16 of the sheet 16, the colored silver layer 12, the carrier layer 13, and the double-sided tape 14 is divided into a plurality of sheets (see FIG. 9). Then, a punching process for forming the decorative body 10 is performed on each laminated body 17 (see FIG. 9), and excess portions such as the sheet 16 are deburred from each laminated body 17 (see FIG. 10) to obtain a plurality of laminated pieces. 18 (see FIG. 11), and a plurality of decorative bodies 10 formed on each laminated piece 18 are transferred onto a jig 19 (see FIG. 12). Thereafter, the plurality of decorative bodies 10 are transferred onto the jig 19 To the release layer 15 via a plurality of positioning pins 20 Copy so that changing bonding (see FIG. 13) to (see FIG. 14). The other parts are the same as those in the above embodiment, and the description thereof is omitted.

  In the present embodiment, the same effects as those of the above-described embodiment can be expected, and when the decorative body 10 is substantially flat and does not have an R shape, it can be easily manufactured in large quantities. Moreover, diversification of the manufacturing method of the decorative body 10 can be expected.

  The decorative body 10 according to the present invention is not limited to the above embodiment. For example, in the above embodiment, the necessary number of carrier layers 13, double-sided tapes 14 and release layers 15 are adhered to the back surface of the colored silver layer 12, but these carrier layers 13, double-sided tapes 14 and release layers 15 are May be omitted.

  Further, the carrier layer 13 may be subjected to a surface treatment technique such as corona treatment or frame treatment to improve the adhesion to the double-sided tape 14. In addition, the double-sided tape 14 may be directly adhered to the colored silver layer 12 instead of the carrier layer 13 as long as it does not cause any trouble. Furthermore, the decorative body 10 can be used as a cushion rather than a screw concealment to prevent the occurrence of a collision sound when the housing 4 is folded.

Examples of the decorative body and its manufacturing method according to the present invention will be described below together with comparative examples.
Example 1
First, 2 parts by weight of a vulcanizing agent and 0.005 parts by weight of a colorant are added to 100 parts by weight of silicone rubber having a hardness of 50 Hs to form a temporary sheet, and the sheet is cut into a predetermined size. This sheet was vulcanized by hot pressing at 175 ° C. for 10 minutes.

  KE-551U (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) was used as the silicone rubber, and C-8 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) was used as the vulcanizing agent. As a colorant, KE-ColorMB (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) was used.

  When the sheet is vulcanized by hot pressing, a complete sheet is formed by secondary vulcanization at 200 ° C. for 60 minutes, and a colored silver layer provided with an aluminum gold foil is formed on the sheet with a silicone adhesive. A double-sided tape was laminated and adhered onto this colored silver layer, and then a laminate comprising these sheets, the colored silver layer, and the double-sided tape was punched out with a φ3.5 mm punch to produce a decorative body. .

  As the colored silver layer, a 0.1t PET film (trade name Alpet manufactured by Panac) was used by laminating with an aluminum foil, and NITTO No. 512 (Nitto Denko product name) was used.

Example 2
100 parts by weight of silicone rubber KE-581U (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) having a hardness of 80Hs instead of a hardness of 50Hs was used, and the others were the same as in Example 1.
Example 3
As the colored silver layer, a 0.1-t aluminum vapor-deposited PET film (trade name Metal Me, manufactured by Toray Industries, Inc.) was used, and the others were the same as in Example 1.

Example 4
In order to add depth to the color, transparent silicone rubber KE-551U (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.), which is not colored, is further adhered to the surface of the translucent colored sheet laminated in Example 1, and the others are implemented. Same as Example 1.

Comparative Example 1
Instead of 0.005 parts by weight of the colorant, 10 parts by weight of the colorant was added, and the others were the same as in Example 1.

Comparative Example 2
A sheet was formed in the same manner as in Example 1, and a double-sided tape was directly adhered without adhering a colored silver layer on the sheet. Then, these laminates were punched with a φ3.5 mm punch to obtain a decorative body. Manufactured.

  When the decorative bodies of Examples and Comparative Examples were produced, the metallic design degree, chemical resistance, light resistance, drop impact absorbability, product cost, and dimensional absorbability related to these were examined and summarized in Table 1.

As apparent from Table 1, according to the decorative body of the example, it was possible to obtain an excellent metallic design degree, chemical resistance, light resistance, drop impact absorption, product cost, and dimensional absorption.
On the other hand, according to the decorative body of the comparative example, although excellent chemical resistance, light resistance, drop impact absorption, product cost, and dimensional absorption were obtained, the metallic design degree was low and high-class I couldn't create a sense of quality and a sense of advancedness, and I couldn't get attractive design, fashion and profound feeling.

It is a plane explanatory view showing typically an embodiment of a decoration object concerning the present invention. It is side explanatory drawing which shows typically embodiment of the decoration body which concerns on this invention. It is a back surface explanatory view showing typically an embodiment of a decoration object concerning the present invention. It is plane explanatory drawing which shows typically the relationship between the decoration body and release layer in embodiment of the decoration body which concerns on this invention. It is side surface explanatory drawing of FIG. It is a plane explanatory view showing typically the modification in the embodiment of the decoration object concerning the present invention. It is side surface explanatory drawing of FIG. The perspective view which shows typically the state which adhere | attaches a colored silver layer on the sheet | seat in other embodiment of the decoration body which concerns on this invention, and its manufacturing method, and adheres a carrier layer and a double-sided tape in order on this colored silver layer. It is explanatory drawing. The decorative body and the manufacturing method thereof according to the present invention are schematically shown in a state in which a laminated body of a sheet, a colored silver layer, a carrier layer, and a double-sided tape in another embodiment is divided into a plurality of sheets and each laminated body is subjected to a punching process. FIG. It is a perspective explanatory view showing typically the state which removes a deburred part from the layered product in other embodiments of the decoration object concerning the present invention, and its manufacturing method. It is a perspective explanatory view showing typically the state where the layered product in other embodiments of the decoration object concerning the present invention and its manufacturing method is divided into a plurality of lamination pieces. It is a perspective explanatory view showing typically the state where a plurality of decorations of a lamination piece in other embodiments of the decoration object concerning the present invention and its manufacturing method are transcribe | transferred on a jig | tool. It is a perspective explanatory view showing typically the state where a plurality of decoration objects in other embodiments of the decoration object concerning the present invention and its manufacturing method are transcribed from a jig to a mold release layer. FIG. 14 is a perspective explanatory view schematically showing a state where a plurality of decorative bodies in FIG. 13 are pasted to a release layer. It is a perspective view which shows a mobile phone typically. FIG. 16 is a rear perspective view of FIG. 15. It is a perspective view which shows a game machine typically. It is a back perspective view showing a digital camera typically.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cellular phone 2 Game machine 3 Digital camera 4 Case 5 Screw hole 10 Decoration body 11 Silicone rubber processed material 12 Colored silver layer 13 Carrier layer 14 Double-sided tape (double-sided adhesive layer)
15 Release layer 16 Sheet 17 Laminated body 18 Laminated piece

Claims (4)

A decorative body provided on a housing of an electronic device, comprising a processed silicone rubber and a colored silver layer having a total light transmittance of less than 5% combined with the processed silicone rubber,
The silicone rubber processed product is a decorative body characterized in that 0.0005 to 4 parts by weight of a colorant is added to silicone rubber and processed to be translucent.   The decorative body according to claim 1, further comprising a carrier layer bonded to the colored silver layer.   The decorative body according to claim 2, comprising a double-sided adhesive layer that is adhered to either the colored silver layer or the carrier layer.   The method for producing a decorative body according to claim 1, 2, or 3, wherein 0.0005 to 4% by weight of an inorganic pigment in which a base oxide flake is coated with a metal oxide is added to a silicone rubber, a vulcanizing agent, and a colorant. Participants are added to form a compound, and this compound is vulcanized and molded to adhere a colored silver layer, and then these molded product and colored silver layer are processed into a predetermined shape. Body manufacturing method.

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