JP2008105207A - Manufacturing method of decorative molded object having radio wave-transmissive metal color transmissive pattern - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently manufacture a decorative molded object having radio wave transmitting properties on the basis of a film having a metal color transmissive pattern. <P>SOLUTION: This manufacturing method of the decorative molded object is composed of a base material forming process which forms, based on a film assembly 10 having radio wave-transmitting properties and prescribed metal color transmissive pattern, a plastic molded member to the back side being the visually unrecognized side of the metal color transmissive pattern of the film assembly 10 and providing a base material part 30 formed of a relatively low melting point plastic material using an injection molding means or the like and constituting the base of this plastic molding, and a clear layer forming process for providing a clear layer 20 formed of a relatively high melt point transparent plastic material on the visually recognized surface side of the metal color transmissive pattern. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention provides a vehicle or the like on which a millimeter wave radar device is mounted, in which a decoration such as an emblem or ornament having a metal color pattern (pattern) is provided on a front grill or the like installed in front of the millimeter wave radar device. In this case, the present invention relates to a method for manufacturing a decorative molded body having a radio wave transmissive metal color transmission pattern in which the millimeter wave can pass through the metal color pattern (pattern) portion.

In a conventional metal color decorative molded body for millimeter wave transmission, for example, as described in Japanese Patent No. 3366299 (Patent Document 1), metal particles having radio wave permeability are formed on the back side of the transparent molded body. It is provided so as to have a predetermined metal color pattern via a predetermined vapor deposition means or the like. In this method, a predetermined masking means is provided on the back side of the transparent molded body, and a predetermined metal color pattern (pattern) is formed by applying a metal vapor deposition means from above the masking means. Is. Therefore, the method of applying such masking means and metal vapor deposition means has a problem that work efficiency is not good because extra steps such as masking means are required. Further, in metal deposition via the masking means, there is a problem that the metal color pattern boundary line must be unclear based on leakage from the mask boundary portion or the like. That is, there is a problem that the parting is not good. In order to solve these problems, on the basis of a film, a metal color pattern and a design pattern are formed in advance on this surface, and such a film is preshaped to have a predetermined uneven pattern, Further, a method of forming a decorative molded body having a metal color pattern by transferring the metal color pattern formed in this way onto the surface of a separately provided plastic molded body, for example, 2004-251868 (Patent Document 2) and the like.
Japanese Patent No. 3366299 JP 2004-251868 A

  By the way, in the thing of the said patent document 2, a metal color pattern etc. is formed on the surface of a film using a vapor deposition means, and it is trying to form a decoration molded body on the basis of such a film. . In that case, the said film is first pre-shaped. Therefore, there is a problem that sagging occurs around the boundary line of the metal color pattern during this pre-shaping, and so-called parting failure occurs. In order to solve such problems, in forming a metal color pattern, a metal color pattern is formed on a transparent film without using a masking means, and such a film is preshaped. A decoration having a radio wave-transmitting metallic color transmission pattern in which a clear layer that directly forms a transparent part and a carrier part that forms the basis of a plastic molded body are integrally formed by using a predetermined molding means. An object (problem) of the present invention is to provide a method for producing a molded body.

  In order to solve the above problems, the following measures are taken in the present invention. That is, in the first invention which is the invention described in claim 1, regarding the method for producing a decorative molded body having a radio wave-transmitting metallic color transmission pattern, a predetermined printing means is used on one surface side of the transparent film. A metal layer provided so as to cover the entire surface of the screen layer formed so as to have a light-transmitting pattern and metal particles having radio wave transmissivity uniformly on the screen layer via a predetermined base coat layer On the basis of a film having a metal color transmission pattern comprising a color layer, and a top coat layer serving as a protective film provided on the metal color layer so as to cover the entire surface of the metal color layer First, on the top coat layer side of the film in which the metallic color transmission pattern is not visually recognized, a plastic molding is formed using a predetermined molding means and formed into a convex shape. The base substrate portion forming step for providing the base substrate portion to be processed, and then the surface side of the film provided on the surface side of the convex base substrate portion formed in this way and transmitting the metal color A clear layer forming step of providing a plastic molded body made of a transparent body using a predetermined molding means on the surface side where the pattern is visually recognized, and then a predetermined hardness on the surface side thus provided with the clear layer. And a hard coat layer forming step of providing a hard coat layer made of a transparent body.

  Moreover, in 2nd invention which is invention of Claim 2, formation of the screen layer which has a predetermined pattern regarding the manufacturing method of the decorating molded object which has a radio wave permeable metal color transmission pattern of Claim 1 is formed. The printing is performed by any one of silk printing means using opaque ink, hot stamp printing means, tampo printing means, letterpress printing means, ink jet printing means, and gravure printing means.

  Moreover, in 3rd invention which is invention of Claim 3, provision of the film which has the said metal color transmission pattern regarding the manufacturing method of the decorative molded object which has a radio wave transparent metal color transmission pattern of Claim 1 is provided. In the process of forming the base substrate portion that is to be formed into a convex shape and has the metal color transmission pattern, the film having the metal color transmission pattern is placed in a mold. Engagement holes into which the film fixing pins are inserted are provided at the four corners of the film, and a cutout is formed around the engagement hole and radially cut from the center of the engagement hole toward the outside of each mold. A notch was provided.

  According to the first invention, on the basis of a film having radio wave transmission performance and having a predetermined metal color transmission pattern (pattern), first, without first preliminarily shaping the film, The base substrate portion that forms the basis of the plastic molded body on the side on which the top coat layer on the side is provided and is formed into a convex shape using a molding means such as an injection molding means, A clear layer made of a transparent body is formed on the side where the metallic color transmission pattern is visually recognized using an injection molding means or the like, thereby forming a decorative molded body having a radio wave transmitting metallic color transmission pattern. As a result, unlike the conventional metal vapor deposition method using masking means to a three-dimensional curved surface, “blurring” or the like occurs at the boundary of the metallic color transmission pattern. Not, it has become possible to ensure the parting at the boundary in good condition. Further, since the masking means is not used, the work process can be shortened and the work efficiency can be improved. In addition, since the film is formed by integral molding without pre-shaping the film, there is no possibility of inconveniences such as parting defects at the metal color transmission pattern boundary due to pre-shaping. It was. In addition to these, in the present invention, first, the integration of the plastic molded body by means of injection molding means or the like into the film having the metal color transmission pattern is first performed at a relatively low temperature. The base substrate portion forming step to be processed is performed first, followed by the clear layer forming step performed at a relatively high temperature, and the hard coat layer is immediately applied to the surface side where the clear layer is provided. As a result, it is possible to prevent the occurrence of scratches on the surface of the clear layer during each work process.

  In the second aspect of the invention, the screen layer for visually recognizing the metallic color transmission pattern is formed by silk printing means using opaque ink, etc., so that the screen layer can be formed efficiently. At the same time, the boundary line of the metallic color transmission pattern of the screen layer thus formed is formed with a sharp outline. As a result, the parting part of the metal color transmission pattern can be obtained in a good state.

  In the third aspect of the invention, when the film having the metal color transmission pattern is installed in the mold, first, engagement holes into which film fixing pins are inserted are provided at the four corners of the film. In addition, since a notch formed so as to open radially outward is provided around the engagement hole, a certain amount of the film is projected from the convex side to the film surface during the insert molding process using the film. Even if this tensile force is applied, this tensile force can be released in all directions at the notch. As a result, image distortion and flow in the metallic color transmission pattern portion provided on the film are prevented from occurring, and a parting portion in the metallic color transmission pattern can be formed in a clear state.

  The best mode for carrying out the present invention will be described with reference to FIGS. The film according to the present embodiment is based on a film assembly 10 having radio wave transmission performance as shown in FIG. 1 (X) and exhibiting a predetermined metal color transmission pattern. For example, as shown in FIG. 1 (Y), a film assembly 10 that forms the basis of the plastic molded body and has the metal color transmission pattern is formed on the back side of the assembly 10 where the metal color transmission pattern is not visually recognized. A base base material portion forming step in which a base base material portion 30 having a curved shape so as to project in a convex manner to the side by using an injection molding means or the like, and then the metal color transmission of the thus formed metal base material portion It is basically composed of a clear layer forming step in which a transparent clear layer 20 is provided on the surface side where the pattern is visually recognized.

  A film assembly 10 having such a basic configuration and having the radio wave transmission performance as the basic element and having a predetermined metal color transmission pattern (pattern) will be described with reference to FIGS. 1 and 2. . As shown in FIG. 1 (X), the film assembly 10 is formed on the basis of a transparent film 1, and is formed of an opaque body on one side, for example, the back side. A screen layer 2 having a predetermined punched pattern (pattern) is provided, and a base coat layer 3 made of a transparent body is provided on the upper surface side so as to cover the entire screen layer 2. The metal color layer 5 is provided over the entire upper surface of the base coat layer 3. A top coat layer 55 as a protective film is provided on the upper surface side of the metal color layer 5.

  Next, the formation method (manufacturing method) of the film assembly 10 having such a basic configuration will be described with reference to FIG. First, it is made of polycarbonate (PC), an alloy material of polycarbonate (PC) and polyethylene terephthalate (PET), or polymethyl methacrylate (PMMA), and has a thickness of about 0.15 mm to 0.8 mm. A transparent film 1 is prepared. For example, as shown in FIG. 2A, printing means such as silk printing means, hot stamp printing means, tampo printing means, letterpress printing means, inkjet printing means, and gravure printing means are provided on one side of the film 1. The screen layer 2 made of an opaque layer having a predetermined transmission pattern (pattern “B”) is used. In this state, a predetermined punching pattern (light transmission pattern) “B” is visually recognized from the surface side 11 of the film 1. Next, on the upper surface side of the screen layer 2, as shown in FIG. 2 (B), the transparent layer is made of a transparent material for improving adhesion with metal particles in a later step, or a metal A base coat layer 3 is provided over the entire surface to finish the deposition surface in a good state. Even in this state, the transmission pattern “B” is visually recognized from the surface side 11 of the film 1. The base coat layer 3 is formed by selecting a one-component or two-component paint such as acrylic, acrylurethane, polyester, polyesterurethane, urethane, vinyl acetate, etc. by spray coating means, silk The printing is performed using a printing unit or a coater printing unit.

  Next, as shown in FIG. 2C, the metal color layer 5 is provided uniformly on the entire upper surface side of the base coat layer 3 as shown in FIG. The metal color layer 5 is formed of metal particles such as indium (In), tin (Sn), and chromium (Cr) by sputtering means or predetermined vapor deposition means, and further, predetermined radio waves (millimeter waves) are generated between the particles. It is formed by being provided over the entire surface with a gap that allows transmission. In this state, from the surface side 11 of the film 1, the metal color transmission pattern “B” is visually recognized through the pattern of the screen layer 2. Further, the entire back surface side of the film 1 is covered with metal particles, and the metal color transmission pattern is not visually recognized as shown in FIG. Thus, although the metal color transmission pattern “B” was formed on the surface side 11 of the film 1 so as to be visually recognized, on the upper surface side of the metal color layer 5, for example, as shown in FIG. A top coat layer 55 is provided as a protective film for protecting the metal particles of the metal color layer 5. The top coat layer 55 is formed in the same manner as in the formation of the base coat layer 3 by selecting various kinds of paints, and applying one or two liquid paints among them as predetermined printing means or application means. It is done using. Through such a series of steps, a radio wave (millimeter wave) transmissive film (film assembly) 10 formed so that the metallic color transmission pattern “B” can be visually recognized from the surface side is formed. It will be.

  Next, FIGS. 3 and 4 show a method (manufacturing method) for forming a plastic decorative molded body using the film (film assembly) 10 having such a radio wave transmission property and a predetermined metal color transmission pattern. Based on the explanation. First, a basic forming method (manufacturing method) will be described with reference to FIG. First, as shown in FIG. 3E, a predetermined mold 9 is installed on the top coat layer 55 side, which is the back side of the film assembly 10, and a plastic having a relatively low melting point in the cavity 99 is provided. A material such as a plastic material made of acrylonitrile / ethylene / styrene (AES) or the like is injected to form the base substrate portion 30 that forms the basis of the molded body. In this state, next, as shown in FIG. 3F, another mold 8 is installed on the surface side 11 of the transparent film 1 forming the film assembly 10, and the surface side 11 A transparent plastic material made of polycarbonate (PC) or the like having a relatively high melting point is injected into the transparent layer 20 to form the clear layer 20.

  In forming the clear layer 20, a predetermined primer may be applied in advance to the surface side 11 of the transparent film 1 to increase the adhesion. Next, a hard coat layer 25 is provided on the surface side where the clear layer 20 is formed in this way, for example, as shown in FIG. As a result, the surface of the clear layer 20 can be prevented from being scratched or weather resistance can be improved. Furthermore, the fine scratches generated on the surface of the clear layer 20 when the clear layer 20 is formed are automatically repaired. Such a hard coat layer 25 is formed by spray coating means, flow coating means, or the like using a one-component or two-component acrylic or silicon-based paint.

  From the surface side of the plastic molded body thus obtained, as shown in FIG. 3G, a predetermined metallic color transmission pattern (pattern) “B” is transmitted through the clear layer 20 made of a transparent body. It will be visually recognized. That is, by going through such a series of steps, for example, it is composed of a three-layered form of the clear layer 20, the film assembly 10, and the base substrate portion 30 as shown in FIG. A decorative molded body having a metal color transmission pattern is efficiently formed (manufactured). In the present embodiment, the film assembly 10 and the base substrate 30 formed of AES or the like are first joined, and this step is performed at a relatively low temperature. Since it did in this way, the thermal load with respect to the film assembly 10 comes to be reduced. As a result, it is possible to reduce the parting failure in the metal color transmission pattern portion and to prevent the film assembly 10 itself from being deteriorated. Next, following this process, the clear layer 20 is formed, and the hard coat layer 25 is immediately provided. Thus, since the formation of the clear layer 20 is set as the last step, it is possible to solve the problem that there is a possibility that fine scratches or the like may occur on the surface of the clear layer 20. It was.

  Next, in the case of forming (manufacturing) a decorative molded body based on the film (film assembly) 10 having such a metal color transmission pattern, the decorative molded body has a curved form. That is, a manufacturing method in the case where the metallic color transmission pattern “B” has a three-dimensional form will be described with reference to FIG. Specifically, since the film assembly 10 installed in the molds 8 and 9 receives a certain amount of tensile load during the molding process, a method of dealing with this is to be provided.

  First, as shown in FIG. 4 (H), the engagement holes 18 formed so as to be engaged with the engagement pins 88 provided in the mold 8 are provided at the four corners of the film assembly 10. A cutout portion 188 is provided at the joint hole 18 so as to be opened radially outward. Next, the film assembly 10 formed in this way is taken to one mold 8 and the above-mentioned engagement is made to an engagement pin 88 provided on the mold 8 as shown in FIG. The joint hole 18 is engaged, and further, the mold clamping is performed with the mold 9 on the other side.

  At this time, in the case where the base substrate portion 30 is formed into a convex shape toward the film assembly 10 side, naturally, the die 9 is also a three-dimensional convex shape. Therefore, the three-dimensional convex portion 91 causes the film assembly 10 to exert a tensile force on a part of the surface of the film assembly 10 when the mold is clamped or when a plastic material that forms the base substrate portion 30 is injected. Will act. However, in the present embodiment, since the notch portion 188 having a shape radially opened outward is provided around the engagement hole 18, the tensile force is It acts on a part of the film assembly 10 existing around the engaging pin 88, and the engaging pin 88 escapes relatively to the notch 188 side from the engaging hole 18. As a result, the tensile force is appropriately dispersed. As a result, the metallic color transmission pattern “B” formed on the film assembly 10 is not distorted or deformed. After the mold is clamped in such a state, a predetermined plastic material is injected into the cavity in the mold 8 to form a three-dimensional metallic color transmission pattern “B” formed in the film assembly 10. Thus, a decorative molded body having the above will be formed.

It is a longitudinal cross-sectional view which shows the outline | summary of the decorative molded body formed using the film (film assembly) which has the metallic color transmission pattern which makes the principal part of this invention, and the said film assembly. It is process explanatory drawing which shows the manufacturing method of the film (film assembly) which has a metallic color transmission pattern which makes the principal part of this invention. It is process explanatory drawing which shows the manufacturing method of the decoration molded object using the film which has a metal color transmissive pattern. It is process explanatory drawing which shows the manufacturing method of the decorative molded body which has a three-dimensional-shaped metal color permeation | transmission pattern.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Film 11 Surface side 18 Engagement hole 188 Notch part 2 Screen layer 25 Hard coat layer 3 Base coat layer 5 Metal color layer 55 Top coat layer 10 Film assembly 20 Clear layer 30 Base base material part 8 type 88 Engagement pin 9 type 91 Convex 99 Cavity

Claims (3)

  A screen layer formed so as to have a predetermined light transmission pattern by a predetermined printing means on one surface side of the transparent film, and metal particles having radio wave permeability on the screen layer via a predetermined base coat layer A metal color layer that is provided uniformly and covering the entire surface, and a top coat that is provided so as to cover the entire surface of the metal color layer on the metal color layer and serves as a protective film First, based on a film having a metallic color transmission pattern composed of a layer, on the top coat layer side of the film in which the metallic color transmission pattern is not visually recognized, a plastic molding is formed using a predetermined molding means. A base base material portion forming step for forming a base base material portion that is molded into a convex shape, and then a surface provided on the surface side of the convex base base material portion thus formed. A clear layer forming step of providing a plastic molded body made of a transparent body using a predetermined molding means on the surface side of the rumm and on the surface side where the metallic color transmission pattern is visually recognized, and then providing the clear layer in this way And a hard coat layer forming step of providing a hard coat layer made of a transparent body having a predetermined hardness on the surface side, and a decorative molding having a radio wave-transmitting metal color transmission pattern characterized by comprising: Body manufacturing method.   The method for producing a decorative molded body having a radio wave transmissive metallic color transmission pattern according to claim 1, wherein the screen layer having a predetermined pattern is formed by silk printing means, hot stamp printing means, tampon using opaque ink. Manufacture of a decorative molded body having a radio wave transmissive metallic color transmission pattern, characterized in that it is performed by any one of printing means, letterpress printing means, ink jet printing means, and gravure printing means. Method.   2. The method of manufacturing a decorative molded body having a radio wave transmissive metal color transmission pattern according to claim 1, wherein the base is provided with a film having the metal color transmission pattern and is formed into a convex shape. Engagement holes into which the film fixing pins are inserted at the four corners of the film having the metal color transmission pattern when the film having the metal color transmission pattern is installed in the mold in the forming step of the base material portion. A radio wave-transmitting metallic color characterized in that a notch having a shape radially cut from the center of the engagement hole toward the outside of each mold is provided around the engagement hole. A method for producing a decorative molded body having a transmission pattern.

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