JP4917531B2 - Method for producing synthetic resin molded body having millimeter wave permeability - Google Patents

Description

  The present invention has a metallic color decorating body composed of marks or the like exhibiting a metallic color inside, and the transparency of the metallic color emitted from the metallic color decorating body can be visually recognized. The present invention relates to a synthetic resin molded body and a method for manufacturing the same. And in the thing of this invention, the said metal color layer which forms the said metal color decoration body incorporated in the place of the synthetic resin molding which consists of a transparent body can permeate | transmit a predetermined millimeter wave. It is something that can be done.

As a conventional one of this kind, for example, marks formed so as to be three-dimensionally displayed, such as those described in Japanese Patent Application Laid-Open No. 58-81120, are applied to a synthetic resin material (plastic material) having transparency. Thus, a plastic molded body in which marks and the like are visually recognized is formed. Then, the plastic molded body made of the marks and the like formed in this way is attached to the interior side or exterior part of an automobile or the like on the surface side through a predetermined bonding means or the like. is there.
JP 58-81120 A

  By the way, in the above-mentioned conventional one, for example, when it is intended to provide marks that exhibit a metallic color on interior / exterior parts for automobiles, first, marks that exhibit a metallic color are first formed, and then The marks and the like are affixed to the surfaces of the inner / outer parts using an adhesive means or the like. Accordingly, in such a conventional device, when the interior / exterior parts to which the decorative body is attached are of a large shape, the large size is required for mounting the decorative body made of small marks and the like. There is a problem of having to work around the parts. In order to solve such a problem, first, a mark or the like that has a metallic color and is formed so that a predetermined millimeter wave can be transmitted is provided. Marks exhibiting a metallic color are placed in a predetermined mold, and then a predetermined thermoplastic synthetic resin material (plastic material) having transparency is injected and integrated around it. It is an object (problem) of the present invention to efficiently form a synthetic resin molded body having a metal color decorative body mainly formed of a transmissive metal color layer in a small number of steps. is there.

In order to solve the above problems, the following measures are taken in the present invention. That is, in the first invention as claimed in claim 1, the surface coating layer made of a predetermined thermoplastic synthetic resin material containing PC or PMMA, regarding a method for producing a synthetic resin molded article having millimeter wave permeability Based on a basic molded body made of a synthetic resin material having high heat resistance capable of withstanding the temperature generated at the time of insert injection molding, and formed into a mountain-shaped three-dimensional shape having a predetermined inclined surface , the basic molded body A base coat layer made of an acrylic urethane paint is provided on the entire surface of the substrate , and indium or tin (Sn) is vapor-deposited to a thickness of 300 mm to 800 mm through the base coat layer so as to exhibit a metal color. A metal color layer forming step to be performed and a basic molded body on which such a metal color layer is formed are placed in a predetermined mold, and A predetermined thermoplastic synthetic resin material having transparency and a lower melting point than that of the synthetic resin material forming the basic molded body is used on the surface side having the metal color layer using insert injection molding means. Te provided which the surface coating layer forming step of forming a surface coating layer by, thus formed a surface coating layer made of a thermoplastic synthetic resin molded article having a metallic color layer inside, there at the back side The basic molded body removing step of removing the basic molded body in a state where the metal color layer provided on the surface side of the basic molded body is left, and the removal of the basic molded body in this way. given a black coating step of applying a black coating over the entire surface also comprising the side where the above metal color layer was a back surface side of the surface coating layer, those in a state of being subjected to black coating in the black coating step And placed in the mold was formed with a and a backup layer forming step of forming a backup layer made of predetermined thermoplastic synthetic resin material on the upper surface side having undergone the black paint.

The first invention as claimed in claim 1 will be described. According to the present invention, a synthetic resin molded body formed such that a predetermined metal color is visually recognized from the surface and the thickness of the layer exhibiting the metal color has a value of 300 mm to 800 mm is efficiently manufactured. Will come to be. Then, from the surface to emit metallic color (metallic color layer) is set to have a by Rutotomoni predetermined thickness formed by indium metal or the like in this way the synthetic resin molded body formed by The metal color decorative body having this metal color layer can transmit a predetermined radio wave (millimeter wave).

Further, in the synthetic resin molded body produced in the present invention , the surface coating layer having transparency is provided so as to cover the metallic decoration, and is made of PC or PMMA . In addition, since these are provided using predetermined molding means such as insert injection molding means, a synthetic resin molded body having a metal color layer and having millimeter wave permeability is efficiently formed (manufactured). Will be able to.

As described above, in the present invention , it is possible to efficiently produce a synthetic resin-made molded body having a metallic color decorative body having millimeter wave permeability therein.

  The best mode for carrying out the present invention will be described with reference to FIGS. As shown in FIG. 1, this relates to a synthetic resin molded body having a metallic color decoration 1 made of marks or the like exhibiting a metallic color. Specifically, as shown in FIG. 2, a metal such as indium (Indium) or tin (Sn) is formed on the back side of the transparent surface coating layer 5 made of PC (polycarbonate) or PMMA (polymethyl methacrylate). It is related with the synthetic resin molded object which has the metal color layer 15 formed in (1), and has the metal color decoration body 1 formed so that it may have a predetermined form.

  In the present embodiment having such a configuration, the configuration of the metallic color decoration 1 having a metallic color layer 15 that emits a metallic color and transmits a predetermined millimeter wave will be described. As shown in FIG. 2, this is basically a top coat layer that is transparent and that functions as a protective film on the back side of the surface coating layer 5 formed of PC or PMMA. The metal color layer 15 is provided through 16. And the black coating is given to the back surface side of this metal color layer 15 provided in this way through the base coat layer 12 which consists of an acrylic urethane type coating material. That is, the black coating layer 6 is provided. Further, a backup layer 7 made of AES (acrylonitrile / ethylene / propylene / diene / styrene) or ASA (acrylonitrile / styrene / acrylic rubber) is provided on the upper surface side of the black coating layer 6. The backup layer 7 is provided so that the surface side forms a generally smooth surface. That is, the back surface side of the thermoplastic synthetic resin molded body having the metal color decoration 1 is formed on a smooth surface having no overall unevenness. Thus, the millimeter wave transmission from the millimeter wave transmitter installed on the back side of the molded body is improved.

  It should be noted that where the metallic color decorative body 1 such as marks or the like is not provided, for example, in the BB cross section in FIG. 1 and the like, as shown in FIG. It is also conceivable to provide a base coat layer 12 made of urethane paint or the like and to deposit a metal such as indium via the base coat layer 12. Thus, the metal color layer 15 having millimeter wave permeability is formed over the entire back surface side of the surface coating layer 5 made of a transparent body. A black coating layer as a protective film, that is, a black coating layer 6 is provided on the back side (upper side) of the metal color layer 15. The black paint layer 6 is formed by applying a general paint, and the thickness thereof is set to a value of about 20 to 30 microns. As a result, a synthetic resin molded body having the metal color layer 15 and having millimeter wave permeability is formed. And the thing concerning this Embodiment formed in this way is that the whole back surface side is protected by the black coating layer 6 with a thickness of 20 to 30 microns. The thickness can be reduced. In addition, this reduces the overall weight.

  Next, although it concerns on this Embodiment which consists of such a structure, the manufacturing process is demonstrated based on FIG. First, as shown in FIG. 4A, based on a basic molded body 11 molded into a predetermined form, a metal such as indium is formed on one surface side as shown in FIG. A base coat layer 12 is provided so as to be deposited in a stable state. Specifically, a base coat agent made of acrylic urethane paint is applied. In such a state, as shown in FIG. 4C, indium or the like is vapor-deposited on the surface side of the base coat layer 12 formed by applying the base coat agent so as to exhibit a metallic color. That is, the metal color layer 15 formed to have a value of 300 to 800 mm is provided. Thereby, the metal color decoration 1 which has a metal color layer in the surface side will be formed. Next, as shown in FIG. 4D, a top coat layer 16 made of an acrylic urethane-based paint is provided on the surface side of the metal color decorating body 1 that has come to exhibit a metal color by vapor deposition of indium or the like.

  Next, as shown in FIG. 4E, the metal color decorating body 1 provided with the top coat layer 16 on the surface is placed in a predetermined mold. The top coat layer 16 is provided for the purpose of protecting the surface of the metal color decorative body 1 and further improving the adhesion with the surface coating layer 5 made of a thermoplastic synthetic resin material described later. is there. Next, the surface coating layer 5 is provided on the upper surface side of the metallic color decorative body 1 provided with the top coat layer 16 on the surface by using an injection molding means or the like. Through such a process, a predetermined thermoplastic synthetic resin material having transparency, such as PC (polycarbonate) or PMMA (polymethyl methacrylate), is provided on the surface side having the metal color layer 15. . As a result, the surface coating layer 5 is formed. Then, as shown in FIG. 4 (F), from the back side of the surface coating layer 5 having the metal color decoration 1 inside, the basic molded body 11 having the metal color layer 15 on the surface is formed from the above metal. The color layer 15 is removed while remaining in the surface coating layer 5. That is, the metal color layer 15 provided on the surface side of the metal color decoration 1 is transferred to the back side of the surface coating layer 5. As a result, the contour line of the metal color layer 15 can be clearly formed. In this way, for example, as shown in FIG. 4G, a synthetic resin composition having the metal color layer 15 inside and formed so that the metal color layer 15 can be visually recognized from the outside. Forms will be formed.

  Next, as shown in (H) of FIG. 4, black coating is applied over the entire back surface side of the metal color decorating body 1 and the entire back surface side of the surface coating layer 5 provided with the metal color decorating body 1. As a result, the entire back surface side of the synthetic resin molded body including the metal color decorative body 1 is covered with the black coating layer 6. Next, as shown in FIG. 4I, a backup layer 7 made of AES or ASA is provided on the upper surface side of the black coating layer 6 covered. As a result, the entire back surface side of the synthetic resin molded body including the back surface side of the metallic color decorative body 1 is made of a smooth surface without unevenness. Through these steps, the entire molding process is completed.

  In the present embodiment formed by taking such a process, the metal color decoration 1 is mainly formed with a metal color layer 15 made of indium metal or the like, A metal color due to such a light emitting action of indium is emitted. Since the metal color emitting layer (metal color layer) 15 is formed of indium metal or the like, the metal color layer 15 can transmit a predetermined radio wave (millimeter wave). It becomes like this. Therefore, in the present embodiment, it is possible to install a radio wave transmission device (millimeter wave transmission device) on the back side of the metallic color decoration 1 exhibiting the metal color.

  Further, in the present embodiment, the basic molded body 11 is formed of PEEK (polyether ether ketone) or PPS (polyphenyl sulfide) which is a synthetic resin material having high heat resistance and difficult adhesion. The metal color decoration 1 formed on the basis of such a high heat-resistant basic molded body 11 is placed in a predetermined mold, and in such a state, the melting point is higher than that of the PEEK or PPS. A low PC or PMMA is provided by using predetermined molding means such as insert molding means, whereby the metal color layer 15 provided on the surface side of the metal color decorative body 1 is provided on the back side of the synthetic resin molded body. Thus, a synthetic resin molded body having the metal color layer 15 inside is formed. Therefore, in the present embodiment, the synthetic resin molded body having the metal color layer 15 inside can be efficiently formed. Further, in the present embodiment, a synthetic resin molded body having a metal color layer 15 having millimeter wave permeability and having different forms, for example, a plurality of different emblems, etc. By replacing the emblem and the like, it becomes possible to manufacture using the same mold, and the mold can be shared.

It is a perspective view which shows the whole structure of the synthetic resin molded object which has the metallic color decorating body concerning this invention inside. It is a partial cross section figure which shows the structure of the part which has the metal color decoration which comprises the principal part of this invention. It is a cross-sectional view which shows the structure of the other part concerning this invention. It is process explanatory drawing which shows the manufacturing method of the synthetic resin molded object which has the metallic color decorating body concerning this invention inside.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Metal color decoration body 11 Base molded object 12 Basecoat layer 15 Metal color layer 16 Topcoat layer 5 Surface coating layer 6 Black coating layer 7 Backup layer

Claims (1)

A mountain-shaped three-dimensional shape having a predetermined inclined surface made of a synthetic resin material having heat resistance capable of withstanding the temperature generated during insert injection molding of a surface coating layer made of a predetermined thermoplastic synthetic resin material containing PC or PMMA A base coat layer made of an acrylic urethane-based paint is provided on the entire surface side of the base molded body, and indium or tin (Sn) is provided through the base coat layer. A metal color layer forming step for depositing a metal color by vapor deposition to a thickness of 300 mm to 800 mm, a basic molded body on which such a metal color layer is formed is placed in a predetermined mold, and the metal color Predetermined having transparency on the surface side having a layer and having a lower melting point than the synthetic resin material forming the basic molded body A surface comprising a surface-forming layer forming step for forming a surface-coating layer by providing a thermoplastic synthetic resin material by means of insert injection molding means, and a thermoplastic synthetic-resin-molded body having a metal color layer inside the surface. A basic molded body in which the base molded body is removed from the back surface side where the basic molded body is formed, with the metallic color layer provided on the front surface side of the basic molded body left, from where the coating layer is formed. A black coating process in which a black coating is applied over the entire surface including the back surface side of the surface coating layer from which the basic molded body has been removed, including the side having the metal color layer, and a black color in the black coating process. A back having a painted state placed in a predetermined mold, and a back-up layer made of a predetermined thermoplastic synthetic resin material is formed on the black painted upper surface side. And-up layer formation step, characterized in that it consists, having a metallic color layer inside, having a millimeter wave transparency, production method of a synthetic resin molded article.

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