JP2014141016A - Multilayer molding of resin and multilayer molded article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multilayer molding through the light transmission layer, which has light transmissivity, and whose visibility of a design is changed so that a character or a sign can effectively be made visible against its background, and to provide a multilayer molded article.SOLUTION: A multilayer molding 10 is constituted so that a light transmission layer 11 having light transmissivity is formed continuously to a base material layer 12 which has the light transmissivity lower than that of the light transmission layer 11 or has no light transmissivity. The design 13 is formed on the contact surface of the light transmission layer 11 with the base material layer 12. The multilayer molding 10 is combined with a light source 14 arranged for illuminating at least one of the light transmission layer 11 and the base material layer 12. The multilayer molded article includes the multilayer molding 10.

Description

  The present invention relates to a resin-molded laminate and a laminate-molded product.

  Laminated molded products are known as one of resin molded products with improved design and functionality. Specifically, it is a multi-color molded product in which the design surface is decorated with a plurality of colors, or a functional molded product in which a resin material having a non-slip function or a soft feeling is adopted at a part touched by the hand. In recent years, in such laminated molded products used for interior and exterior parts of automobiles, home appliances / OA devices, portable electronic devices, etc., there is a growing demand for higher design, and various laminated molded products have been devised. Yes.

  For example, Patent Document 1 contains a dye, a pigment, or a light diffusing agent, has a monotonous thickness change with respect to one direction of the sheet surface, and has a continuous color tone change (gradation) along the sheet surface. A sheet-like laminated structure composed of two layers, a recognized layer and a transparent layer laminated on the layer, and a light source part disposed at the side edge of the sheet-like laminated structure. A decorative organic glass molded body in which the gradation effect of the color tone is emphasized by the light irradiation of the light source part is disclosed.

  And in patent document 2, it is a shaping | molding simultaneous decoration molded product by which the translucent decorating layer is formed in the surface of the shaping | molding resin layer, and the unevenness | corrugation is provided in the back surface of the shaping | molding resin layer, Only at the time of the illumination of this, the shaping | molding simultaneous decoration molded product by which the pattern of a fixed design is visually recognized from a decoration layer is disclosed.

JP 2002-113803 A JP 2006-0669132 A

  However, in the decorative organic glass molded body of Patent Document 1, the purpose is to emphasize the gradation effect continuous in one direction of the sheet surface, that is, to improve the design of the entire design surface. Resin molded products that require the symbols to be visually recognized effectively, such as emblems for automobiles that display maker logos, maker marks, car names, grade names, etc., and resin moldings to display them on automobile interior parts There is a problem that it is not suitable for a product or a resin molded product for displaying them on a housing such as a home appliance / OA device or a portable electronic device.

  On the other hand, in the molded simultaneous decorative molded product of Patent Document 2, the translucent decorative layer is a thin sheet or a resin layer (thickness 0.5 to 5 μm: paragraph 0024), and is adhered to this decorative layer. Concavities and convexities (design) are provided on the back surface of the molded resin layer that is continuous through the layers. Therefore, there is a problem that it is difficult to sufficiently produce a three-dimensional effect in a pattern of a certain design that is visually recognized through a translucent decorative layer only when illuminated from the back surface.

  The present invention has been made in view of the above-described problems. Specifically, the visibility of a design through a light-transmitting layer having light transmittance is changed, and characters and symbols are displayed on the background. It aims at providing the laminated molded object and laminated molded product which can be made to visually recognize effectively.

  In order to achieve the above object, a laminated molded body according to the present invention includes a light-transmitting layer having a light transmitting property and a substrate having a low light transmitting property or a light transmitting property with respect to the light transmitting layer. A laminated molded body having a continuous layer, wherein a design is formed on a contact surface between the light transmission layer and the base material layer, and at least one of the light transmission layer and the base material layer is illuminated. Combined with the arranged light source.

  In the laminated molded body according to the present invention, it is preferable that the design is visible through the light transmission layer, and the visibility of the design is changed depending on the presence or absence of light irradiation from the light source or a difference.

  On the other hand, in the laminated molded body according to the present invention, the design may not be visible through the light transmission layer, and the design may be visible by irradiation of light from the light source.

  The laminated molded body according to the present invention may employ a resin material in which a brightening agent is added to at least one of the light transmission layer and the base material layer.

  Furthermore, in the laminated molded body according to the present invention, it is preferable that the light source is disposed on at least one layer side of the laminated molded body, that is, the light transmission layer side, the side surface side, and the base material layer side.

  The laminated molded product according to the present invention is a laminated molded product including such a laminated molded product.

  According to the present invention, there is provided a laminated molded body in which a light-transmitting layer having a light-transmitting property and a base material layer having a low light-transmitting property or a light-transmitting property with respect to the light-transmitting layer are continuous. In addition, a design is formed on the contact surface between the light transmission layer and the base material layer, and the light transmission layer is combined with a light source arranged to illuminate at least one of the light transmission layer and the base material layer. It is possible to provide a laminated molded article and a laminated molded article that can change the visibility of the design through the light transmitting layer having the property and can effectively make characters and symbols visually recognized with respect to the background.

FIG. 3 is a schematic plan view showing an arrangement of a laminated molded body and a light source according to Example 1. It is an enlarged view of the principal part X of FIG. It is a figure which shows the change of the visibility of the design of a laminated molded object in the AA cross section of FIG. It is a schematic plan view which shows the arrangement | positioning of the laminated molded object which concerns on Example 2, and a light source. It is an enlarged view of the principal part Y of FIG. It is a figure which shows the change of the visibility of the design of a laminated molded object in the BB cross section of FIG. It is a schematic sectional drawing which shows another arrangement | positioning of a light source.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  With reference to FIGS. 1 to 3, a laminated molded body according to Example 1 of the present invention will be described. Fig.1 (a) and FIG.1 (b) are schematic plan views which show arrangement | positioning of a laminated molded object and a light source. FIG. 1A shows a state where only natural light or room light is emitted and no light is emitted from the light source, and FIG. 1B shows a state where light is emitted from the light source. FIG. 2 is an enlarged view of a main part X of FIG. FIG. 3A to FIG. 3C are diagrams showing changes in the visibility of the design of the laminated molded body in the AA cross section of FIG. FIG. 3A shows only natural light or room light and no light is emitted from the light source, FIG. 3B shows a state where light is emitted from the light source, and FIG. 3C shows the light transmission layer. A state in the case of employing a resin material to which a brightening agent is added is shown.

  As shown in FIGS. 1 and 3, the laminated molded body 10 according to Example 1 has a light-transmitting layer 11 having a light-transmitting property and a light-transmitting layer 11 having a low light-transmitting property or a light-transmitting property. The base layer 12 does not have a flat plate-shaped laminated molded body, and the design 13 is formed on the contact surface between the light transmission layer 11 and the base material layer 12, and the light transmission layer 11 and the substrate The light source 14 is disposed so as to face two places on the side surface side of the laminated molded body 10 so as to illuminate at least one of the material layers 12. In the present Example 1, in order to simplify the description, the base material layer 12 is assumed to have no light transmittance, and the design 13 is assumed to be three alphabetic characters “UBE”. Further, it is assumed that the light source 14 is arranged on the side surface side of the light transmission layer 11 so as to illuminate the light transmission layer 11.

  As shown in FIG. 1 (a), the laminated molded body 10 can visually recognize the design 13 through the light transmission layer 11 in a state where only natural light or room light is emitted and no light is emitted from the light source 14. Specifically, as shown in FIG. 3A, natural light or indoor light from the light transmission layer 11 side to the laminated molded body 10 reflects reflected light α (alpha) reflected by the light transmission layer 11 and light transmission. Reflected light β (beta) that is transmitted through the layer 11 and reflected by the base material layer 12 and reflected light γ (gamma) that is reflected by the design 13, and the design 13 from the light transmitting layer 11 side due to the difference in each reflection state. Ensure visibility. In order to simplify the description, the cross-sectional shape of the design 13 is a combination of triangular convex shapes from the base material layer 12, but is not limited thereto, and the design 13 can be visually recognized only by natural light or indoor light. As long as the properties can be secured, the substrate layer 12 may have a concave shape (a convex shape of the light transmission layer 11), or may have a concave-convex shape continuous to two layers.

  And as shown in FIG.3 (b), if a light ray is irradiated to the light transmissive layer 11 from the light source 14 arrange | positioned so that the side surface side 2 location of the laminated molded body 10 may be opposed, The light is transmitted through the light transmission layer 11 as it is, and the entire light transmission layer is caused to emit light, and becomes reflected light γ ′ in the design 13, and the visibility of the design 13 is changed from the state of only natural light or room light. The light source 14 is not particularly limited as long as it is a light source capable of emitting visible light having no directionality. In addition, the visibility of the design 13 through the light transmission layer 11 can be changed variously by combining a plurality of types of light sources such as the number of light sources and the arrangement of the light sources, light source colors, illuminance, and laser beams having directivity. Can do.

  On the other hand, as shown in FIG. 3 (c), the light transmission layer 11 is made of a resin material to which a brightening agent having light reflectivity or light diffusibility, such as a fluorescent dye, an inorganic type, a polymer, and a metal fine particle is added As a result, the light beam applied to the light transmission layer 11 from the light source 14 becomes reflected light β ′ reflected by the particles 15 of the bright agent scattered in the light transmission layer 11 as well as the design 13. The visibility of the design 13 through 11 can be further changed. In the first embodiment, for ease of explanation, the base material layer 12 does not have light transmittance, and the light source 14 is arranged to illuminate the light transmission layer 11. If the light source 14 is arranged so that the light source 14 also illuminates the base material layer 12, the visibility of the design 13 in a state where no light is emitted from the light source 14 is ensured. However, similarly to the light transmission layer 11, the light emitting effect of the base material layer 12 can be obtained by the light rays emitted from the light source 14, and if a resin material to which a brightening agent is added is also used for the base material layer 12. The reflection effect in the bright agents scattered in the base material layer 12 can be obtained.

  As described above, the laminated molded body 10 according to the first embodiment ensures the visibility of the design 13 through the light transmission layer 11 in a state where only natural light or room light is emitted and no light is emitted from the light source 14. However, the light of the light source 14 can change the visibility of the design 13 from only natural light or room light, and the characters and symbols can be effectively visually recognized with respect to the background. Further, by combining a plurality of types of light sources, variations in the change are various. Furthermore, the laminated molded body 10 according to the first embodiment can be used as a laminated molded product in which another functional resin or film is laminated and molded as an insert part.

  Various uses are conceivable for the laminated molded product 10 or a laminated molded product including the laminated molded product 10. For example, if it is used in automobile emblems and interior parts such as automobiles, it has a light-transmitting layer with an appropriate thickness on the surface. As a result, the car name and grade name are changed to appear three-dimensionally on the faintly illuminated background, and the display color changes according to the driving mode. It is possible to produce functionality such as On the other hand, if it is used as a resin molded product to display the manufacturer's name and the manufacturer's logo on housings such as home appliances / OA devices, portable electronic devices, etc., these displays are three-dimensionally displayed on the light-emitting background in conjunction with power-on. It is possible to produce such effects as floating or randomly changing the emission color.

  The part that utilizes the light source of such production is possible with the decorative organic glass molded body of Patent Document 1, but it is not a letter or a figure that is a design, but the purpose is to emphasize the gradation effect of those backgrounds, Even if a light source is used, it is difficult to improve the visibility of characters or figures by a three-dimensional pattern applied to the interface where two layers contact. Moreover, since the letters or figures by these three-dimensional patterns are applied to one layer having a monotonous thickness change in one direction, that is, an inclined surface, the visibility of these three-dimensional patterns from the transparent layer In addition, it is difficult to produce a three-dimensional effect with a uniform thickness, and is not suitable for a resin molded product that requires characters and symbols to be effectively visually recognized from various angles with respect to the background as described above. .

  On the other hand, in the molded simultaneous decorative molded product of Patent Document 2, the translucent decorative layer is very thin, and the unevenness provided on the back surface of the molded resin layer that continues to the decorative layer via the adhesive layer ( As described above, it is not suitable for the resin molded product as described above because the design pattern is merely illuminated by the design layer to make the pattern of the certain design visible from the decorative layer.

  Next, a laminated molded body according to Example 2 of the present invention will be described with reference to FIGS. 4 to 6. 4 (a) and 4 (b) are schematic plan views showing the arrangement of the laminated molded body and the light source. FIG. 4A shows a state where only natural light or room light is emitted and no light is emitted from the light source, and FIG. 4B shows a state where light is emitted from the light source. FIG. 5 is an enlarged view of a main part Y of FIG. 6 (a) and 6 (b) are diagrams showing changes in the visibility of the design of the laminated molded body in the BB cross section of FIG. FIG. 6A shows a state where only natural light or room light is emitted and no light is emitted from the light source, and FIG. 6B shows a state where light is emitted from the light source.

  The laminated molded body 10 ′ according to Example 2 is different from the laminated molded body 10 according to Example 1 in that, as shown in FIG. 4A, only natural light or room light is emitted from the light source 14. In this state, the design 13 ′ cannot be visually recognized through the light transmission layer 11. Except for these points, the laminated molded body 10 is basically the same as the laminated molded body 10 according to the first embodiment. Therefore, the detailed description thereof is omitted or described with reference to the first embodiment, and only the differences are described in detail. To do. It should be noted that due to this difference, an object to be distinguished from the description of the first embodiment is distinguished by adding “′ (apostrophe)” to the same reference numeral as in the first embodiment.

  As described above, the laminated molded body 10 ′ has only natural light or room light and is not irradiated with light from the light source 14, as shown in FIG. The design 13 'is not visible. Specifically, as shown in FIG. 6A, natural light or indoor light from the light transmission layer 11 side to the laminated molded body 10 ′ is reflected light α reflected by the light transmission layer 11, and the base material layer 12. Are reflected light β and reflected light γ reflected on the design 13, but the difference in the respective reflection states, in particular, the difference in the reflection state between the reflected light β and the reflected light γ is reduced, or the reflected light γ By reducing the amount of reflection (decreasing the amount of incident light), the design 13 can be made invisible from the light transmission layer 11 side.

  As described above, the technology for making the design surface invisible even though the design surface has some irregularities is formed by laminating a transparent resin layer on the design surface, and forming the design surface resin layer by sinking (cooling solidification shrinkage). Defects such as dents that occur on the design surface due to a decrease in product volume and weld lines (linear recesses that occur at the confluence of multiple fluid resins in the mold due to product shape restrictions) are not visible. It is known as a molding technique for highly designed resin molded products. From such a technique, the cross-sectional shape of the design 13 ′ is a concave shape with a small amount of concaves in the thickness direction from the base material layer 12. However, the design is not limited to this, and the design 13 is only natural light or indoor light. Can be made in an invisible state, the convex shape of the base material layer 12 (the concave shape of the light transmission layer 11) or the concave and convex shape continuous to the two layers may be used.

  As described above, the laminated molded body 10 ′ according to Example 2 is not visible to the design 13 ′ through the light transmission layer 11 in a state where only natural light or room light is emitted and no light is emitted from the light source 14. The feature is that it is possible. This feature is that only when a certain driving mode (for example, sports mode) is selected for interior parts such as automobiles, the display of related operation switches and the like can be viewed three-dimensionally on the illuminated background. In large-sized home appliances such as large-screen TVs, personal computers, and refrigerators where furniture has become increasingly important and simple exterior images are important, the manufacturer's logo is displayed at all when not in use or when no one is in the room. Rather, it is suitable for a presentation that is displayed in a modest but impressive manner only while using them or when someone is in the room.

  On the other hand, the laminated molded body 10 ′ according to the second embodiment changes the visibility of the design 13 ′ from the state of only natural light or room light by the light emitted from the light source 14, and characters and symbols with respect to the background. Is effectively the same as the laminated molded product 10 according to Example 1, and the description thereof is omitted.

  The present invention is not limited to the above embodiment and can be implemented in various ways. For example, in the laminated molded body according to Example 1 and Example 2, in order to simplify the description and the drawings, the light source 14 is disposed so as to face two places on the side surface side of the laminated molded body. In order to change the visibility of the design, various light sources as shown in FIG. 7 can be arranged. For example, like a license plate of a car or a signboard of a store, etc., after effectively observing letters and symbols themselves by irradiating light from a light source, so that the whole including the background is also illuminated, It may be arranged not only on the side surface side of the laminated molded body but also on the light transmission layer side and irradiated with various light rays from the two layer sides (FIG. 7A). Moreover, you may arrange | position a light source also to the back side in addition to the side surface side of a laminated molding as the base material layer of a laminated molding as a resin material which has a light transmittance (FIG.7 (b)). In this case, the type of light from the light source that illuminates the light transmissive layer and the light source that illuminates the substrate layer can be changed.For example, if each layer is illuminated with light of a different color, The visibility can be further changed.

DESCRIPTION OF SYMBOLS 10 Laminated molded object 10 'Laminated molded object 11 Light transmission layer 12 Base material layer 13 Design 13' Design 14 Light source 15 Luminescent agent particle

Claims (6)

  A laminated molded body in which a light-transmitting layer having a light-transmitting property and a base material layer having a low light-transmitting property or a light-transmitting property with respect to the light-transmitting layer are continuous, and the light-transmitting layer and A laminated molded body having a design formed on a contact surface with the base material layer and combined with a light source arranged to illuminate at least one of the light transmission layer and the base material layer.   The laminated molded product according to claim 1, wherein the design is visible through the light transmission layer, and the visibility of the design is changed depending on presence or absence of irradiation of light from the light source or a difference.   The laminate molded article according to claim 1, wherein the design is invisible through the light transmission layer, and the design is visible by irradiation of light from the light source.   The laminated molded body according to any one of claims 1 to 3, wherein a resin material to which a brightening agent is added is used for at least one of the light transmission layer and the base material layer.   The laminated molded body according to any one of claims 2 to 4, wherein the light source is disposed on at least one layer side of the laminated molded body, the light transmitting layer side, the side surface side, and the base material layer side. .   A laminated molded article comprising the laminated molded body according to any one of claims 1 to 5.

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