JP2011068123A - Molding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve appearance quality of a molding molded by laminating at least two layers of resin layers or the like. <P>SOLUTION: The molding is formed by closely attaching a surface layer 3 formed of colorless transparent or fluorescence colored clear resin on the surface of a translucent or opaque base layer 2 by means of a two-color molding or an insertion molding. In the molding 1 having such a base layer 2 and a surface layer 3, the color tone and patterns of the base layer 2 can be clearly seen through the surface layer 3 of colorless transparent or fluorescent color on the surface of the molding 1 to provide a the molding 1 of the high appearance quality. By forming irregular patterns 4 on the surface of the base layer 2 and forming the surface layer 3 closely fitting to the irregular patterns 4, the irregular patterns 4 can be protected by the surface layer 3. By using the fluorescent clear resin layer as the surface layer 3, clear fluorescent colored contrast patterns can be seen overlapping on the irregular patterns 4 seen through the fluorescent clear resin layer, providing the appearance of the deep and clear tone. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a molded article formed by laminating at least two layers of resin or the like.

  It has been proposed to form a fine pattern such as hairline texture or etching on the surface of a resin molded product to enhance the design and improve the appearance quality. However, since such a pattern is very easily damaged, it is difficult to handle a molded product, and it is difficult to maintain a good appearance quality. Therefore, in a resin molded product in which a fine pattern is formed, in order to protect the surface pattern, a surface protective layer is formed on the surface by painting or the like. Patent Document 1 describes forming a transparent resin layer as a surface protective layer on the surface of an opaque layer that has been subjected to decoration processing such as printing, hairline processing, embossing, or the like.

Japanese Patent Laid-Open No. 2003-118055

  When a surface protective layer is formed on a pattern formed by uneven processing such as hairline processing by painting or bonding, the uneven pattern is buried by painting or adhesive, and the intended contour is blurred and the fine shape is hidden. There is a problem such as.

  On the other hand, a single resin molded product that does not have a transparent (clear) coating layer or the like formed on its surface has no depth in color tone and cannot sufficiently improve the appearance quality. In addition, resin molded products that have improved design and decoration by assembling two layers of molded products of different colors and materials have been proposed, but in the assembled products an air layer is generated between the two layers. However, in such a structure, a difference in refractive index occurs in the air layer, so that there is a problem that the color tone of the laminated portion is not vivid.

  An object of the present invention is to improve the appearance quality of a molded product formed by laminating two layers made of different materials and colors.

In order to solve the above problems, the molded product of the present invention is
A translucent or opaque underlayer;
A surface layer formed in two-color molding or insert molding in close contact with the surface of the base layer,
The surface layer is formed of a colorless transparent resin, or a dye-mixed resin obtained by mixing a dye into a transparent resin or a translucent resin.

  Here, as a dye mixed in the surface layer, at least one of a fluorescent dye, a functional dye, and a dye for a bright color can be used. Functional dyes include dyes for imparting or enhancing functions such as infrared transparency, light resistance, and weather resistance.

  As described above, the present invention provides a surface layer made of a colorless transparent resin, a surface layer made of a transparent or semi-transparent resin of fluorescent color, infrared transparency, light resistance, weather resistance, etc. A surface layer made of a transparent or translucent resin to which the above function is imparted is formed in close contact. Therefore, the color tone and pattern of the underlayer pass through a colorless and transparent surface layer, a transparent or translucent surface layer of fluorescent color, or a translucent surface layer with a predetermined color so that it can be seen vividly from the surface. And the appearance quality of the molded product can be improved as compared with the prior art.

  In this invention, an uneven | corrugated pattern can be formed in the surface by which the said surface layer in the said base layer is closely_contact | adhered. In this way, the uneven pattern can be protected by the surface layer. Further, if the surface layer is a fluorescent clear resin layer, a bright and shaded pattern of bright fluorescent colors appears to overlap with the uneven pattern that can be seen through the fluorescent clear resin layer, so that a deep and vivid appearance can be formed.

  In this case, the shape of the concavo-convex pattern and the surface layer can be visually recognized as a predetermined pattern when the surface layer is viewed through the shadow of the concavo-convex pattern due to light from the end surface side of the surface layer. The color density can be set. In this way, even if the unevenness pattern of the underlayer is buried in the surface layer, and this unevenness pattern cannot be visually recognized by the illumination from the normal surface side, the illumination light from the side By this, the uneven pattern can be raised as a shading pattern. Therefore, it is possible to form a unique appearance that looks different depending on the viewing direction and the direction of light, and improve the appearance quality of the molded product. In addition, if the surface layer is a fluorescent clear resin layer, it is possible to form a unique appearance in which a shade pattern of bright fluorescent colors is superimposed on a shade pattern.

  Alternatively, the base layer is a semi-transparent layer, and the shade of the color generated in the concavo-convex pattern by light from the back side of the base layer can be visually recognized as a predetermined pattern when viewed through the surface layer, The shape of the concavo-convex pattern and the thickness of the foundation layer can also be set. In this way, even if the unevenness pattern of the underlayer is buried in the surface layer, and this unevenness pattern cannot be visually recognized by illumination from the normal surface side, the backside of the underlayer is With the transmitted light, a unique appearance can be formed in which the concavo-convex pattern is raised as a shade pattern of the color of the underlayer. Therefore, the appearance quality of the molded product can be improved. Further, if the surface layer is a fluorescent clear resin layer, a unique appearance can be formed by superimposing the light and shade pattern of the transmitted light on the light and shade pattern of the transmitted light.

  Here, the depth of the unevenness of the uneven pattern is desirably 0.8 mm or less. According to the present invention, it is possible to make such a fine uneven pattern appear as a clear and vivid color pattern, and to prevent the fine pattern from being damaged.

  Here, the through-hole formed in the base layer may have a light transmission part formed by filling a transparent or translucent dye-mixed resin, for example, a transparent clear resin or a fluorescent clear resin. it can. In this way, when the light source is arranged on the back side of the underlayer, light can be transmitted only through the through hole, and light can be shielded at the part where the through hole is not formed. Therefore, it is also possible to form a light and dark pattern by a portion where the light transmission part and the through hole are not formed.

  Further, at least a part of the base layer can be formed of a translucent layer mixed with a light diffusing material. In this way, light from behind the underlayer can be diffused and blurred, and a molded product with a unique appearance that shines faintly can be provided.

  Alternatively, when the molded product illuminated from the surface layer side by a predetermined light source is viewed from the surface layer side, the color becomes a predetermined fluorescent color, and is illuminated from the back side of the base layer by the predetermined light source. The surface layer and the base layer may be formed so that the color of the molded product when viewed from the surface layer side is different from the predetermined fluorescent color. In this way, it is possible to form a molded product that produces different colors depending on whether the surface layer side or the base layer side is the surface.

  In addition, it has a finishing layer formed including at least one of a coating layer, a plating layer, and a discontinuous vapor deposition layer formed on the surface of the surface layer, and at least the surface portion of the base layer contains a filler. A structure formed of a resin can also be used. In this way, the surface of the resin containing filler can be smoothed by the surface layer, and the filler can be prevented from affecting the finishing layer formed by painting, plating, vapor deposition or the like.

  Furthermore, the base layer and the surface layer can be formed from a thermosetting resin or an ultraviolet curable resin.

  According to the present invention, since the surface layer made of a dye-containing resin such as a colorless transparent resin or a fluorescent clear resin is formed on the surface of the translucent or opaque base layer, the base layer is formed. The color tone and pattern can be made transparent through the surface layer of colorless and transparent or fluorescent color so that it can be seen vividly from the surface, and the appearance quality of the molded product can be improved as compared with the prior art.

2 is a partial cross-sectional view of a molded product according to Embodiment 1. FIG. 6 is a partial cross-sectional view of a molded product according to Embodiment 2. FIG. 6 is a partial cross-sectional view of a molded product according to Embodiment 3. FIG. 6 is a partial cross-sectional view of a molded product according to Embodiment 4. FIG. 6 is a partial cross-sectional view of a molded product according to Embodiment 5. FIG.

(Embodiment 1)
FIG. 1 is a partial cross-sectional view of a molded product according to Embodiment 1 of the present invention. The molded product 1 has a cross-sectional configuration in which a base layer 2 and a surface layer 3 are laminated, and these two layers do not cause an air layer or the like between them by a molding method such as two-color molding or insert molding. It is formed in a state of being completely adhered to. The underlayer 2 is a translucent or opaque resin layer. The surface layer 3 is a fluorescent clear resin layer (dye-mixed resin layer) formed from a dye-mixed resin in which a fluorescent dye of a desired color is mixed in a transparent resin or a translucent resin. Further, another layer may be formed on the back side of the base layer 2. Alternatively, a transparent layer such as a transparent resin layer may be further stacked on the surface side of the surface layer 3. The surface layer 3 may be a colorless and transparent resin layer.

Here, as the transparent resin or translucent resin used for the surface layer 3, the following can be used. The same can be used as the translucent resin and opaque resin used for the underlayer 2.
Polymethacrylic acid methyl resin,
Methyl methacrylate-acrylonitrile butadiene-styrene resin Syndiotactic polystyrene resin Polyamide resin Polycarbonate resin Epoxy resin

  Moreover, as transparent resin and translucent resin used for the surface layer 3, functionalities, such as a thermosetting resin (for example, acrylic addition thermosetting resin), ultraviolet curable resin (for example, acrylic addition ultraviolet curable resin), etc. Resin can also be used.

  Furthermore, although the underlayer 2 is a translucent or opaque resin layer, when it is formed by insert molding, it may be formed of a material other than resin. Examples of such materials include glass and other ceramic materials and metal materials.

  Since the molded product 1 is thus formed with the opaque or translucent underlayer 2 on the back side of the surface layer 3 that is a fluorescent clear resin layer, the underlayer 2 functions as an undercoat layer. It is possible to prevent the configuration of the back surface of 2 from affecting the appearance of the surface layer 3 and the molded article 1. In addition, since there is no air layer between the surface layer 3 and the base layer 2, the refractive index changes due to the air layer, and the color tone of the base layer 2 does not become visible from the surface layer 3 side. , Transparency is added to the color of the appearance, and vividness and depth come out. Furthermore, when the underlayer 2 is a fluorescent clear resin layer, bright fluorescent colors appear to overlap the color tone and pattern of the underlayer 2. Therefore, the appearance quality of the molded product 1 can be improved as compared with the conventional one.

  Here, when the material and color of the base layer 2 and the surface layer 3 in the molded product 1 are appropriately set, the molded product 1 is viewed from the surface layer 3 side when illuminated from the surface layer 3 side by a predetermined light source. So that when the color is illuminated from the back side of the underlayer 2 with the same light source, it looks like a color different from the above-mentioned color of the fluorescent color. You can also If it does in this way, it can be set as the molded article 1 which colors differently depending on whether the surface layer 3 side or the base layer 2 side is made into the surface.

  Further, the surface layer 3 of this example is formed of a resin mixed with a fluorescent dye, but instead of the fluorescent dye, the surface layer 3 is provided with functions such as infrared light transmittance, light resistance, and weather resistance. It can also be formed of a resin mixed with a functional dye for enhancing the function.

(Embodiment 2)
FIG. 2 is a partial cross-sectional view of a molded product according to Embodiment 2 of the present invention. The molded product 1A has a cross-sectional configuration in which the base layer 2A and the surface layer 3A are laminated, and the concave / convex pattern 4 is formed on the surface of the base layer 2A. Except for the transfer shape of the concavo-convex pattern 4, the configuration is the same as the molded product 1 of the first embodiment. The concavo-convex pattern 4 is a pattern such as a hairline pattern, a wrinkle pattern, or an etching pattern that is applied to the surface during or after the formation of the underlayer 2 by transfer, corrosion, physical processing with an abrasive, etc. It is a fine pattern with a depth of 0.8 mm or less.

  With such a configuration, the molded product 1A can protect the fine uneven pattern 4 with the surface layer 3A. Further, since there is no air layer between the surface layer 3A and the base layer 2A, a fine uneven pattern can be seen clearly. Further, the uneven pattern 4 seen through the fluorescent clear resin layer forming the surface layer 3A appears to be superimposed with the bright and dark colors of the fluorescent color by the surface layer 3A. Can be formed.

(Modification 1 of Embodiment 2)
In the second embodiment, the surface of the uneven pattern 4 formed on the base layer 2A is in close contact with the surface layer 3A, and the uneven shape is buried in the surface layer 3A. In such a configuration, the concavo-convex shape of the concavo-convex pattern 4 is a shape that does not cause much shading with light from the surface layer 3A, or the coloring concentration of the surface layer 3A by the fluorescent dye is set to be deep, or Depending on the relationship between the color of the surface layer 3A and the color of the underlying layer 2A, the uneven pattern 4 may not be visible with light from above the surface layer 3A. In Modification Example 1, by appropriately setting the concavo-convex shape of the concavo-convex pattern 4 and the coloring density of the surface layer 3A, the concavo-convex pattern 4 cannot be visually recognized as a pattern by light from above the surface layer 3A, but the end face of the surface layer 3A The unevenness pattern 4 is shaded by light from the side, and this shadow is visible as a predetermined pattern from above the surface layer 3A (from the front of the irregularity pattern 4).

  In Modified Example 1, with this configuration, the uneven pattern 4 that cannot be seen by illumination from the normal surface side can be raised as a shadow pattern by illumination light from the side, so that it can be seen depending on the viewing direction and the direction of light. A different appearance can be formed, and the appearance quality of the molded product 1A can be improved. Further, if the surface layer 3A is a fluorescent clear resin layer, the shade pattern is overlaid with a bright fluorescent light and shade pattern of the fluorescent clear resin that appears to emit light by illumination from above the surface layer 3A. Appearance can be formed. Therefore, a unique appearance can be formed and appearance quality can be improved.

(Modification 2 of Embodiment 2)
The modification example 2 uses a translucent layer as the base layer 2A in the second embodiment. In the modified example 2, the concavo-convex shape of the concavo-convex pattern 4 and the base layer 2A so that the concavo-convex pattern 4 on the surface side of the base layer 2A can be seen as a shade pattern of the color of the base layer 2A by illumination from the back side of the base layer 2A. The thickness is set. In this way, it is possible to form a unique appearance in which the shading pattern corresponding to the concavo-convex pattern 4 is raised by the transmitted light from the back surface of the base layer 2A. At this time, if the surface layer 3A is a fluorescent clear resin layer, it is possible to form an appearance in which the shade pattern of the fluorescent clear resin of the surface layer 3A is superimposed on the shade pattern by the transmitted light. Similarly to Modification Example 1, if the shape of the concavo-convex pattern 4 is set so that the concavo-convex pattern 4 embedded in the surface layer 3A cannot be visually recognized by light from above the surface layer 3A, the viewing direction and light It is possible to form a unique appearance that looks different depending on the direction.

(Embodiment 3)
FIG. 3 is a partial cross-sectional view of a molded product according to Embodiment 3 of the present invention. The molded product 1B has a cross-sectional configuration in which a base layer 2B and a surface layer 3B are laminated, and a through hole 5 is formed in the base layer 2B. The base layer 2B is formed of an opaque material such as a resin, and the surface layer 3B is formed of a fluorescent clear resin or a colorless and transparent clear resin, as in the above-described embodiments. By a molding method such as insert molding, it is formed in a state of being completely adhered so that no air layer or the like is generated therebetween. The through-hole 5 is filled with the same fluorescent clear resin or colorless and transparent clear resin that forms the surface layer 3B so as to be flush with the back surface of the base layer 2B.

  In the molded product 1 </ b> B, the through-holes 5 are all made of transparent or fluorescent clear resin as described above, and thus this part is the light transmission part 6. In such a configuration, when the light source is disposed on the back side of the base layer 2B, light can be transmitted only through the portion of the through hole 5, and light is shielded at the portion where the through hole 5 is not formed. Can do. Therefore, when a structure such as an electronic substrate is arranged inside the molded product 1B, these can be prevented from being seen from the outside. Moreover, the light from the LED or the liquid crystal can be made visible from the outside through the light transmission part 6. On the contrary, the light from the LED or the liquid crystal can be seen by the portion where the through hole 5 is not formed. Masking is also possible. Moreover, it is also possible to form a light and dark pattern by the light transmission part 6 formed by the through hole 5 and the part where the through hole 5 is not formed.

(Embodiment 4)
FIG. 4 is a partial cross-sectional view of a molded product according to Embodiment 4 of the present invention. The molded product 1C is formed by laminating a base layer 2C and a surface layer 3C, and the surface layer 3C is a colorless and transparent clear resin or fluorescent clear resin similar to those of the above embodiments. On the other hand, the underlayer 2C is formed of a translucent resin, but the whole or at least a part thereof is formed of a light diffusion resin portion 2Ca mixed with a light diffusion material. In FIG. 4, the light diffusion resin portion 2Ca is formed in a shape that expands from the back side to the surface side of the base layer 2C. In such a configuration, when the light source is disposed behind the base layer 2C, the light from the light source is scattered by the light diffusing material in the light diffusing resin portion 2Ca. Therefore, when viewed from the surface layer 3C side, the light diffusing resin portion 2Ca. The whole looks shining faintly. Therefore, the molded product 1C can have a unique appearance in which the entire light diffusing resin portion 2Ca is slightly shined through the surface layer 3C. Further, if the light diffusing resin portion 2Ca is partially formed in the base layer 2C, a faintly shining pattern can be formed.

(Embodiment 5)
FIG. 5 is a partial cross-sectional view of a molded product according to Embodiment 5 of the present invention. The molded product 1D has a three-layer structure in which a base layer 2D, a surface layer 3D, and a finishing layer 7 are laminated in this order. The underlayer 2D of the present embodiment is a filler-containing resin mixed with a filler. As the filler, glass, Tismo (potassium titanate fiber), carbon, or the like can be used. It should be noted that the base layer 2D may be a resin containing a filler only for a part of the surface portion or the like. The surface layer 3D is the same colorless and transparent clear resin or fluorescent clear resin as in the above embodiments. The finishing layer 7 is formed of a coating layer, a plating layer, a discontinuous vapor deposition layer, or the like. However, another finishing layer may be laminated on these layers. In such a configuration, the surface of the resin containing filler can be smoothed by the surface layer 3D, so that the filler does not affect the finishing layer 7 formed by a coating layer, a plating layer, a discontinuous vapor deposition layer, or the like. Can be. Therefore, it is possible to suppress the deterioration of the appearance quality due to the mixing of the filler.

1, 1A, 1B, 1C, 1D Molded product 2, 2A, 2B, 2C, 2D Underlayer 2Ca Light diffusion resin portion 3, 3A, 3B, 3C, 3D Surface layer 4 Concavity and convexity pattern 5 Through hole 6 Light transmission portion 7 Finish layer

Claims (10)

A translucent or opaque underlayer;
A surface layer formed in two-color molding or insert molding in close contact with the surface of the base layer,
The surface layer is formed of a colorless transparent resin, or a dye-containing resin obtained by mixing a dye into a transparent resin or a translucent resin. In the molded article according to claim 1,
The dye mixed in the surface layer is at least one of a fluorescent dye, a functional dye, and a dye intended for white color,
The molded product, wherein the functional dye is a dye having at least one of infrared light transmission, light resistance, and weather resistance. In the molded product according to claim 2,
A molded product, wherein a concavo-convex pattern is formed on a surface of the base layer on which the surface layer is in close contact. In the molded product according to claim 3,
In order to be able to be visually recognized as a predetermined pattern when the surface layer is viewed through the shadows generated in the concavo-convex pattern by the light from the end surface side of the surface layer or the light from the back side of the surface layer, A molded product, wherein the shape of the uneven pattern and the coloring density of the surface layer are set. In the molded product according to claim 3 or 4,
A molded product, wherein the depth of the unevenness of the uneven pattern is 0.8 mm or less. In the molded product according to any one of claims 1 to 5,
A molded article comprising a light transmitting portion formed by filling the colorless transparent resin or the dye-mixed resin into a through-hole formed in the underlayer. In the molded product according to any one of claims 1 to 6,
The molded article, wherein at least a part of the underlayer is formed of a translucent layer mixed with a light diffusing material. In the molded product according to any one of claims 1 to 7,
The dye-containing resin is a fluorescent dye-containing resin,
The molded product illuminated from the surface layer side by a predetermined light source has a predetermined fluorescent color when viewed from the surface layer side, and the molded product illuminated from the back side of the base layer by the light source The molded product, wherein the surface layer and the base layer are formed so that the color when viewed from the surface layer side is different from the fluorescent color. In the molded product according to any one of claims 1 to 8,
Having a finish layer formed on the surface of the surface layer;
The finishing layer includes at least one of a coating layer, a plating layer, and a discontinuous deposition layer,
The underlayer is a molded product characterized in that at least a surface portion thereof is formed of a resin containing a filler. In the molded product according to any one of claims 1 to 9,
At least one of the base layer and the surface layer is formed from a thermosetting resin or an ultraviolet curable resin.

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