Decorative component for vehicle and method for producing decorative component for vehicle

Abstract

To provide a vehicular decorative component which can impart a three-dimensional appearance to surrounding viewers, and a method for producing the vehicular decorative component.SOLUTION: A decorative panel 4 comprises: a base material 4a; and a central-region-forming multilayer film 4d and a peripheral-region-forming multilayer film 4e, each of which is bonded to the same surface of the base material 4a via an adhesive layer 4b, the multilayer films being arranged adjacent to each other and having different thickness dimensions. Each of the central-region-forming multilayer film 4d and the peripheral-region-forming multilayer film 4e includes a plurality of functional layers laminated in a stacked configuration. At least a part of the functional layers included in the central-region-forming multilayer film 4d differs from the functional layers included in the peripheral-region-forming multilayer film 4e, and a step 40 is formed at a boundary between the central-region-forming multilayer film 4d and the peripheral-region-forming multilayer film 4e.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a decorative component for a vehicle and a method for manufacturing the decorative component for a vehicle. [Background technology]

[0002] Various decorative parts (vehicle decorative parts) are attached to vehicles. These vehicle decorative parts are visible from the outside of the vehicle and from inside the vehicle, and have a significant impact on the impression the vehicle gives. For example, a front grille mounted on a vehicle is one example of a vehicle decorative part. For example, Patent Document 1 discloses a grill illumination that includes such a front grille. The grill illumination disclosed in Patent Document 1 is attached to the front of the vehicle, for example, and illuminates the vehicle at night, etc. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-75283 Summary of the Invention [Problem to be solved by the invention]

[0004] Generally, vehicle decorative parts may have large protrusions or bent portions that match the vehicle shape, but the surface is locally smooth and gives a flat impression. However, as mentioned above, vehicle decorative parts have a significant impact on the impression of the vehicle. For this reason, it is sometimes required to impart a three-dimensional effect to the surface of the vehicle decorative part.

[0005] The present invention has been made in consideration of the above-mentioned problems, and has an object to provide a decorative part for a vehicle that can give a three-dimensional effect to those around it, and a method for manufacturing the decorative part for a vehicle. [Means for solving the problem]

[0006] The present invention employs the following configuration as a means for solving the above problems.

[0007] A first aspect of the present invention is a decorative part for a vehicle, comprising a substrate, and a first multilayer film portion and a second multilayer film portion, each of which is adhered to the same surface of the substrate via an adhesive layer, and which are arranged adjacent to each other and have different thickness dimensions, wherein the first multilayer film portion and the second multilayer film portion each have a plurality of functional layers arranged in a stacked manner, and at least a portion of the functional layers included in the first multilayer film portion are different from the functional layers included in the second multilayer film portion, and a step is formed at the boundary between the first multilayer film portion and the second multilayer film portion.

[0008] A second aspect of the present invention is the first aspect, wherein a gap is provided between the edge of the second multilayer film portion connected to the first multilayer film portion and the adhesive layer.

[0009] A third aspect of the present invention is the first or second aspect, wherein the first multilayer film portion has, as the functional layer, a light-shielding layer that blocks visible light and a colored layer that is visible from the side opposite the substrate and has a color different from that of the light-shielding layer, and the second multilayer film portion has, as the functional layer, only a light-transmitting layer that can transmit the visible light.

[0010] A fourth aspect of the present invention is a method for manufacturing a vehicle decorative part, the vehicle decorative part comprising a base material, and a first multilayer film portion and a second multilayer film portion each bonded to the same surface of the base material via an adhesive layer, arranged adjacent to each other and having different thickness dimensions, the first multilayer film portion and the second multilayer film portion each having a plurality of functional layers arranged in a stacked manner, and a transparent layer which is one of the functional layers commonly possessed by the first multilayer film portion and the second multilayer film portion, and a functional layer which is included in the first multilayer film portion and is different from that of the transparent layer. The method includes a functional layer lamination step of adjacently arranging a transparent layer and the functional layer included in the second multilayer film portion and different from the transparent layer; an adhesive layer arrangement step of adhering an adhesive layer to the first multilayer film portion and the second multilayer film portion from the side opposite the transparent layer; and a substrate pressing step of pressing the flat substrate against the first multilayer film portion and the second multilayer film portion via the adhesive layer while supporting the transparent layer, and a step is formed at the boundary between the first multilayer film portion and the second multilayer film portion in the substrate pressing step. [Effects of the Invention]

[0011] According to the present invention, a step is formed at the boundary between the first multilayer film portion and the second multilayer film portion. This allows the surface of the vehicle decorative part to be visually recognized three-dimensionally from the outside. Therefore, according to the present invention, it is possible to give a three-dimensional effect to those around. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a schematic front view of a vehicle equipped with an illumination grille having a decorative panel according to an embodiment of the present invention; [Figure 2] 1 is a schematic cross-sectional view of an illumination grille having a decorative panel according to an embodiment of the present invention; [Figure 3] FIG. 2 is a schematic front view showing an enlarged portion of a decorative panel according to an embodiment of the present invention. [Figure 4] 4 is a cross-sectional view taken along the line AA in FIG. 3, including a central region and a peripheral region of the decorative panel according to one embodiment of the present invention. [Figure 5] 3 is a schematic cross-sectional view of a linear region of a decorative panel according to an embodiment of the present invention. FIG. [Figure 6] 5A to 5C are schematic diagrams illustrating a manufacturing method of a decorative panel according to an embodiment of the present invention. [Figure 7] 5A to 5C are schematic diagrams illustrating a manufacturing method of a decorative panel according to an embodiment of the present invention. [Figure 8] 5A to 5C are schematic diagrams illustrating a manufacturing method of a decorative panel according to an embodiment of the present invention. [Figure 9] 5A to 5C are schematic diagrams illustrating a manufacturing method of a decorative panel according to an embodiment of the present invention. [Figure 10] 5A to 5C are schematic diagrams illustrating a manufacturing method of a decorative panel according to an embodiment of the present invention. [Figure 11] 5A to 5C are schematic diagrams illustrating a manufacturing method of a decorative panel according to an embodiment of the present invention. [Figure 12] 10A to 10C are schematic diagrams illustrating a modified example of the method for manufacturing a decorative panel according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle decorative component and a method for manufacturing a vehicle decorative component according to the present invention will now be described with reference to the drawings.

[0014] Fig. 1 is a schematic front view of a vehicle 10 equipped with an illumination grille 1. As shown in Fig. 1, the vehicle 10 is equipped with an openable hood H disposed below a windshield G, headlamps L disposed spaced apart on the left and right below the hood H, a front bumper B disposed below the headlamps L, and the like.

[0015] In this embodiment, the vehicle parts mounted on the vehicle 10 are just an example, and other vehicle parts can be mounted on the vehicle 10. Furthermore, the surface shapes of the vehicle parts in this embodiment may be three-dimensional shapes that are not flat. However, it is not necessarily necessary that the surface shapes of all vehicle parts be three-dimensional shapes.

[0016] The illumination grill 1 is provided on a vehicle 10 that does not require or requires little outside air to be taken into the hood H, such as an electric vehicle. However, the illumination grill 1 may also be provided on a vehicle 10 that has an internal combustion engine installed below the hood H. In this embodiment, as shown in FIG. 1, the illumination grill 1 is disposed below the hood H, above the front bumper B, and between the left and right headlamps L. However, the location where the illumination grill 1 is disposed is not particularly limited.

[0017] Fig. 2 is a schematic cross-sectional view of the illumination grille 1. As shown in Fig. 2, the illumination grille 1 includes a support frame 2, a light-emitting unit 3, and a decorative panel 4 (vehicle decorative component).

[0018] The support frame 2 is a member fixed to a vehicle body (not shown), and supports the light emitting unit 3 and the decorative panel 4 as shown in Fig. 2. In this embodiment, the support frame 2 is formed in a shape having a recess 2a that is recessed from the outside toward the inside of the vehicle 10. In other words, the recess 2a is formed in a box shape that is open toward the outside of the vehicle 10. Such a support frame 2 is made of resin, and has a plurality of locking claws 2b that are locked to the vehicle body (not shown).

[0019] The light-emitting unit 3 is fixed to the bottom of the recess 2a of the support frame 2, and can be turned on and off under the control of a control device (not shown). When turned on by the control device, the light-emitting unit 3 emits light toward the open end of the recess 2a. In the following description, the light emitted from the light-emitting unit 3 is referred to as emitted light La. For example, the light-emitting unit 3 includes a printed wiring board and a plurality of LED (light-emitting diode) elements mounted on the printed wiring board.

[0020] The decorative panel 4 is disposed so as to close the open end of the support frame 2, and is disposed opposite the light-emitting units 3. Such a decorative panel 4 is disposed in front of the light-emitting units 3 so as to form a gap between the light-emitting units 3.

[0021] FIG. 3 is a schematic front view of an enlarged portion of the decorative panel 4. As shown in this figure, the decorative panel 4 in this embodiment has a pattern formed of parallelogram-shaped rectangular regions R1 and straight linear regions R2 when viewed from the front side. As shown in FIG. 3, a plurality of rectangular regions R1 are arranged so that one side of each is parallel to another. Furthermore, the linear region R2 is located between two rectangular regions R1. Note that the pattern provided on the decorative panel 4 is not limited to that shown in FIG. 3 and can be changed.

[0022] Each rectangular region R1 has a central region R1a formed in the shape of a parallelogram similar to the rectangular region R1, and an outer peripheral region R1b surrounding the central region R1a. The central region R1a is an area that appears white when viewed from outside the vehicle 10 and blocks the light La (i.e., visible light) emitted from the light-emitting unit 3. The outer peripheral region R1b is an area that appears white when viewed from outside the vehicle 10 and transmits the light La (i.e., visible light) emitted from the light-emitting unit 3. The linear region R2 is an area that appears black when viewed from outside the vehicle 10 and blocks the light La (i.e., visible light) emitted from the light-emitting unit 3.

[0023] According to the illumination grille 1 equipped with such a decorative panel 4, when the external light is strong, for example, during the day and the light-emitting units 3 are turned off, the decorative panel 4 reflects the external light. Therefore, to a person outside the vehicle 10, the central region R1a appears white, and the outer peripheral region R1b and linear region R2 appear black. On the other hand, when the external light is weak, such as at night, and the light-emitting units 3 are turned on, the emitted light La passes through the outer peripheral region R1b, and the decorative panel 4 is illuminated.

[0024] Fig. 4 is a schematic cross-sectional view taken along line AA in Fig. 3, including a central region R1a and a peripheral region R1b. As shown in this figure, the decorative panel 4 includes a base material 4a, an adhesive layer 4b, and a multilayer film 4c.

[0025] The base material 4a is formed into a flat plate shape from a transparent resin. The base material 4a supports the adhesive layer 4b and the multilayer film 4c. The base material 4a is located on the rearmost side of the decorative panel 4. When the decorative panel 4 is supported by the support frame 2, the base material 4a is located closest to the light-emitting unit 3 among the components of the decorative panel 4.

[0026] The adhesive layer 4b is a layer that bonds the multilayer film 4c to the substrate 4a. In this embodiment, the adhesive layer 4b is transparent so that visible light can pass through. Such an adhesive layer 4b is formed, for example, from an adhesive sheet formed into a sheet shape. Note that the adhesive layer 4b can also be formed, for example, by drying and curing a flowable adhesive. The thickness of such an adhesive layer 4b is, for example, 20 μm to 100 μm. However, the thickness of the adhesive layer 4b is not limited.

[0027] The multilayer film 4c has a central region-forming multilayer film 4d (first multilayer film portion) and a peripheral region-forming multilayer film 4e (second multilayer film portion). The central region-forming multilayer film 4d is a multilayer film arranged in the region where the central region R1a is formed. The peripheral region-forming multilayer film 4e is a multilayer film arranged in the region where the peripheral region R1b is formed. The central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e each have a plurality of stacked functional layers.

[0028] As shown in FIG. 4, the central region forming multilayer film 4d has a black layer 20 (light-shielding layer), a smoke layer 21 (light-transmitting layer), a medium layer 22 (light-transmitting layer, step reduction layer), a white layer 23 (colored layer), a beige layer 24 (colored layer), a pearl layer 25 (colored layer), and a transparent layer 26 (light-transmitting layer).

[0029] The black layer 20 is a functional layer located closest to the substrate 4a in the central region-forming multilayer film 4d. The black layer 20 is formed in black and blocks visible light. In other words, the black layer 20 blocks the emitted light La emitted from the light-emitting unit 3.

[0030] The smoke layer 21 is a colored transparent layer that scatters and transmits visible light. In this embodiment, the smoke layer 21 is colored black. In the central region-forming multilayer film 4d, the smoke layer 21 is laminated on the surface of the black layer 20 opposite the substrate 4a. This smoke layer 21 is a light-transmitting layer that can transmit visible light.

[0031] The medium layer 22 is a layer formed of a medium. This medium layer 22 is a step reduction layer for reducing the height of a step 40 (described later) formed at the boundary between the central region R1a and the peripheral region R1b. In the central region-forming multilayer film 4d, the medium layer 22 is laminated on the surface of the smoke layer 21 opposite the substrate 4a. This medium layer 22 is transparent and is a light-transmitting layer that can transmit visible light.

[0032] The white layer 23 is a colored layer formed by drying white ink. The beige layer 24 is a colored layer formed by drying beige ink. The pearl layer 25 is a colored layer formed by drying pearl ink. These white layer 23, beige layer 24, and pearl layer 25 are visible from the side opposite the substrate 4a (i.e., the transparent layer 26 side), and are colored layers of a different color from the black layer 20, which is a light-blocking layer.

[0033] The white layer 23 is laminated on the surface of the medium layer 22 opposite to the substrate 4a. The beige layer 24 is laminated on the surface of the white layer 23 opposite to the substrate 4a. The pearl layer 25 is laminated on the surface of the beige layer 24 opposite to the substrate 4a. However, it is possible to change the order of lamination, or to omit any of the white layer 23, beige layer 24, and pearl layer 25.

[0034] The black layer 20, the smoke layer 21, the medium layer 22, the white layer 23, the beige layer 24, and the pearl layer 25 are each formed to have a thickness smaller than that of the adhesive layer 4b. For example, the thickness of each of the black layer 20, the smoke layer 21, the medium layer 22, the white layer 23, the beige layer 24, and the pearl layer 25 is about 10 μm.

[0035] The transparent layer 26 includes an acrylic layer 26a and a hard coat layer 26b. The acrylic layer 26a is a transparent layer that serves as the base of the multilayer film 4c. The thickness of the transparent layer 26 is greater than the thicknesses of the black layer 20, the smoke layer 21, the medium layer 22, the white layer 23, the beige layer 24, and the pearl layer 25. For example, the thickness of the transparent layer 26 is 100 μm or more. The hard coat layer 26b is laminated on the surface of the acrylic layer 26a opposite the substrate 4a. The hard coat layer 26b is disposed as the outermost layer of the decorative panel 4 and protects the other functional layers. The thickness of the hard coat layer 26b is, for example, approximately 10 μm.

[0036] As shown in Fig. 4, the transparent layer 26 is provided as a surface layer on the side opposite the substrate 4a. The transparent layer 26 includes the acrylic layer 26a having a large thickness as described above, and is thicker than the other functional layers. In the central region-forming multilayer film 4d, the transparent layer 26 is laminated on the surface of the pearl layer 25 opposite the substrate 4a. The transparent layer 26 is one of the light-transmitting layers that can transmit visible light.

[0037] As shown in Fig. 4, the peripheral region-forming multilayer film 4e has a smoke layer 21 (light-transmitting layer), a medium layer 22 (light-transmitting layer, step reduction layer), and a transparent layer 26 (light-transmitting layer). In the peripheral region-forming multilayer film 4e, the smoke layer 21 is bonded to the surface of the adhesive layer 4b opposite the substrate 4a. In addition, in the peripheral region-forming multilayer film 4e, the medium layer 22 is laminated on the surface of the smoke layer 21 opposite the substrate 4a. In addition, in the peripheral region-forming multilayer film 4e, the transparent layer 26 is laminated on the surface of the medium layer 22 opposite the substrate 4a.

[0038] The outer peripheral region-forming multilayer film 4e has only a light-transmitting layer, and therefore the emitted light La emitted from the light-emitting unit 3 can exit the vehicle 10 via the outer peripheral region-forming multilayer film 4e.

[0039] As shown in FIG. 4, the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e have common functional layers: a smoke layer 21, a medium layer 22, and a transparent layer 26. The smoke layer 21 of the central region-forming multilayer film 4d and the smoke layer 21 of the peripheral region-forming multilayer film 4e are connected. The medium layer 22 of the central region-forming multilayer film 4d and the medium layer 22 of the peripheral region-forming multilayer film 4e are also connected. The transparent layer 26 of the central region-forming multilayer film 4d and the transparent layer 26 of the peripheral region-forming multilayer film 4e are also connected. In this way, the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e have the same functional layers that are connected to each other.

[0040] 4, a gap 30 is provided between the adhesive layer 4b and an edge 4e1 of the peripheral region-forming multilayer film 4e, which is connected to the central region-forming multilayer film 4d. This gap 30 causes the edge 4e1 of the peripheral region-forming multilayer film 4e to protrude further from the base material 4a than the central region-forming multilayer film 4d. As a result, a step 40 is formed at the boundary between the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e. The formation of this step 40 results in unevenness on the surface of the decorative panel 4.

[0041] Furthermore, the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e have different numbers of functional layers and different thicknesses. In this embodiment, the thickness of the central region-forming multilayer film 4d is greater than the thickness of the peripheral region-forming multilayer film 4e. Therefore, the amount of protrusion of the peripheral region-forming multilayer film 4e, excluding the edge portion 4e1, from the base material 4a is smaller than the amount of protrusion of the central region-forming multilayer film 4d from the base material 4a. Due to this difference in protrusion amount, unevenness is formed on the surface of the decorative panel 4.

[0042] 5 is a schematic cross-sectional view of the linear region R2. As shown in this figure, the multilayer film 4c has a linear region-forming multilayer film 4f. The linear region-forming multilayer film 4f is a multilayer film disposed in the region where the linear region R2 is formed. This linear region-forming multilayer film 4f has multiple laminated functional layers, similar to the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e.

[0043] As shown in FIG. 5 , the linear region-forming multilayer film 4f has a black layer 20 (light-shielding layer), a smoke layer 21 (light-transmitting layer), a medium layer 22 (light-transmitting layer, step reduction layer), and a transparent layer 26 (light-transmitting layer). The black layer 20 of the linear region-forming multilayer film 4f is connected to the black layer 20 of the peripheral region-forming multilayer film. The smoke layer 21 of the linear region-forming multilayer film 4f is connected to the smoke layer 21 of the peripheral region-forming multilayer film. The medium layer 22 of the linear region-forming multilayer film 4f is connected to the medium layer 22 of the peripheral region-forming multilayer film. The transparent layer 26 of the linear region-forming multilayer film 4f is connected to the transparent layer 26 of the peripheral region-forming multilayer film. In this way, the peripheral region-forming multilayer film 4e and the linear region-forming multilayer film 4f have the same functional layers that are connected to each other.

[0044] Next, a method for manufacturing such a decorative panel 4 will be described. First, as shown in Fig. 6, a white layer 23, a beige layer 24, and a pearl layer 25 are laminated on the surface of the acrylic layer 26a of the transparent layer 26.

[0045] Specifically, the transparent layer 26 is disposed so that the acrylic layer 26a is positioned on top of the hard coat layer 26b, and paint for forming the pearl layer 25 is applied to the acrylic layer 26a using a printing method such as silk printing. Here, the paint is applied only to the area that will become the central region R1a. The paint is then dried to form the pearl layer 25.

[0046] Next, paint for forming the beige layer 24 is applied using a printing method such as silk printing so as to overlap the pearl layer 25. Here, the paint is applied only in the area where the pearl layer 25 has been formed. Thereafter, the beige layer 24 is formed by drying the paint.

[0047] Next, paint for forming the white layer 23 is applied using a printing method such as silk printing so as to overlap the beige layer 24. Here, the paint is applied only in the area where the beige layer 24 has been formed. Thereafter, the paint is dried to form the white layer 23.

[0048] After the white layer 23, the beige layer 24, and the pearl layer 25 are formed, the medium layer 22 is formed as shown in FIG. 7. Here, paint for forming the medium layer 22 is applied to the regions that will become the peripheral region R1b and the linear region R2, including the regions where the white layer 23, the beige layer 24, and the pearl layer 25 are formed. For example, the paint can be applied using a printing method such as screen printing. However, the paint can also be applied using a spin coating method or a spray method. The paint is then dried to form the medium layer 22.

[0049] By forming the medium layer 22, the step at the boundary between the region where the white layer 23, the beige layer 24, and the pearl layer 25 are laminated and the region where they are not laminated becomes gentler. As a result, the amount of protrusion of the step 40 can be reduced. In other words, the amount of protrusion of the step 40 can be adjusted by adjusting the presence or absence of the medium layer 22 and the thickness of the medium layer 22.

[0050] Next, as shown in FIG. 8, the smoke layer 21 is formed. Here, paint for forming the smoke layer 21 is applied so as to overlap the medium layer 22. For example, the paint can be applied using a printing method such as screen printing. However, the paint can also be applied using a spin coating method or a spray method. The paint is then dried to form the smoke layer 21.

[0051] Next, as shown in Fig. 9, the black layer 20 is formed. Here, paint for forming the black layer 20 is applied using a printing method such as silk printing. Here, the paint is applied only in the area that will become the central region R1a and the area that will become the linear region R2. The paint is then dried to form the black layer 20.

[0052] The multilayer film 4c is formed by the steps shown in Figures 6 to 9. The steps shown in Figures 6 to 9 are steps of laminating a functional layer different from the transparent layer 26 onto the transparent layer 26. That is, the steps shown in Figures 6 to 9 form the multilayer film 4c including the functional layer included in the central region-forming multilayer film 4d, the functional layer included in the peripheral region-forming multilayer film 4e, and the functional layer included in the linear region-forming multilayer film 4f.

[0053] 10, an adhesive sheet 50 is attached to the surface of the multilayer film 4c opposite the transparent layer 26. At this time, a gap 30 is formed at the boundary between the central region R1a and the outer peripheral region R1b, as shown in FIG.

[0054] 11, the substrate 4a is placed in contact with the surface of the adhesive sheet 50 opposite the multilayer film 4c, and the multilayer film 4c is pressed against the multilayer film 4c while it is fixed. This flattens the surface of the multilayer film 4c facing the substrate 4a, and forms irregularities such as steps 40 on the surface of the multilayer film 4c opposite the substrate 4a. The adhesive sheet 50 is then dried to form an adhesive layer 4b, thereby completing the decorative panel 4.

[0055] The decorative panel 4 of this embodiment as described above includes a base material 4a, a central region-forming multilayer film 4d, and a peripheral region-forming multilayer film 4e. The central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e are each adhered to the same surface of the base material 4a via an adhesive layer 4b. The central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e are adjacent to each other and have different thicknesses. Each of the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e includes multiple functional layers that are stacked. At least some of the functional layers included in the central region-forming multilayer film 4d are different from the functional layers included in the peripheral region-forming multilayer film 4e. A step 40 is formed at the boundary between the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e.

[0056] According to the decorative panel 4 of this embodiment, a step 40 is formed at the boundary between the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e. This allows the surface of the decorative panel 4 to be viewed three-dimensionally from the outside. Therefore, the decorative panel 4 of this embodiment can provide a three-dimensional effect to those around.

[0057] The decorative panel 4 of this embodiment also has a gap 30. The gap 30 is provided between the adhesive layer 4b and an edge 4e1 of the outer peripheral region forming multilayer film 4e connected to the central region forming multilayer film 4d.

[0058] According to the decorative panel 4 of this embodiment, the gap 30 allows the edge 4e1 to be positioned farther away from the base material 4a than when the gap 30 is not provided. Therefore, according to the decorative panel 4 of this embodiment, the step 40 can be made larger, and the unevenness can be more clearly visually recognized.

[0059] Furthermore, in the decorative panel 4 of this embodiment, the central region-forming multilayer film 4d has, as functional layers, a black layer 20 and colored layers (in this embodiment, a white layer 23, a beige layer 24, and a pearl layer 25). The black layer 20 blocks visible light. The colored layers are visible from the side opposite the base material 4a and have a different color from the black layer 20. Furthermore, the peripheral region-forming multilayer film 4e has, as functional layers, only translucent layers (in this embodiment, a smoke layer 21, a medium layer 22, and a transparent layer 26) that can transmit visible light.

[0060] According to the decorative panel 4 of this embodiment, the central region-forming multilayer film 4d has a colored layer that is visible from the base material 4a side, so that the colored layer can be visible to outsiders when external light is irradiated onto the decorative panel 4. Furthermore, according to the decorative panel 4 of this embodiment, the central region-forming multilayer film 4d blocks light, and the peripheral region-forming multilayer film 4e transmits light. Therefore, for example, by turning on the light-emitting unit 3 arranged on the back surface of the decorative panel 4, it is possible to create a design in which only the peripheral region-forming multilayer film 4e glows out of the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e.

[0061] Furthermore, in the decorative panel 4 of this embodiment, the peripheral region-forming multilayer film 4e has a smoke layer 21 as a light-transmitting layer that scatters and transmits visible light. According to the decorative panel 4 of this embodiment, the smoke layer 21 scatters light, thereby preventing the light source from being visible from outside through the peripheral region-forming multilayer film 4e. For example, according to the decorative panel 4 of this embodiment, the LED elements of the light-emitting unit 3 can be prevented from being visible from outside.

[0062] Furthermore, according to the decorative panel 4 of this embodiment, the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e each have, as a functional layer, a medium layer 22 that reduces the step 40. Furthermore, the medium layer 22 of the central region-forming multilayer film 4d and the medium layer 22 of the peripheral region-forming multilayer film 4e are connected to each other.

[0063] According to the decorative panel 4 of this embodiment, the provision of the medium layer 22 makes it possible to reduce the height of the step 40. In other words, by providing the medium layer 22 as in the decorative panel 4 of this embodiment, it is possible to adjust the height of the step 40.

[0064] In addition, in the decorative panel 4 of this embodiment, the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e have a transparent layer 26 as a functional layer. The transparent layer 26 is provided as a surface layer on the side opposite to the base material 4a and has a thickness dimension larger than that of the other functional layers.

[0065] According to the decorative panel 4 of this embodiment, even if the base material 4a is not provided during the manufacturing process of the decorative panel 4, the transparent layer 26 can support other functional layers. Therefore, the multilayer film 4c and the base material 4a can be bonded together after being formed separately.

[0066] Furthermore, in the decorative panel 4 of this embodiment, the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e have the same functional layer that is connected to each other. According to the decorative panel 4 of this embodiment, the functional layers that are connected to each other can be formed in the same process when manufacturing the decorative panel 4. Therefore, the manufacturing process can be simplified compared to when the functional layer of the central region-forming multilayer film 4d and the functional layer of the peripheral region-forming multilayer film 4e are formed in separate processes.

[0067] The manufacturing method for the decorative panel 4 of this embodiment includes a functional layer laminating step, an adhesive layer arranging step, and a substrate pressing step. The functional layer laminating step is a step of arranging adjacently a functional layer included in the central region-forming multilayer film 4d and different from the transparent layer 26 and a functional layer included in the peripheral region-forming multilayer film 4e and different from the transparent layer 26, which is one of the functional layers shared by the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e. The adhesive layer arranging step is a step of adhering an adhesive layer 4b to the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e from the side opposite the transparent layer 26. The substrate pressing step is a step of pressing a flat substrate 4a against the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e via the adhesive layer 4b while supporting the transparent layer 26. The substrate pressing step also forms a step 40 at the boundary between the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e.

[0068] According to the manufacturing method of the decorative panel of this embodiment, a step 40 can be formed at the boundary between the central region-forming multilayer film 4d and the peripheral region-forming multilayer film 4e. This allows the surface of the decorative panel 4 to be seen three-dimensionally from the outside. Therefore, the decorative panel 4 of this embodiment can give a three-dimensional effect to those around.

[0069] In addition, in the manufacturing method of the decorative panel 4 of this embodiment, in the substrate pressing process, a step 40 is formed by pressing the substrate 4a against the central region forming multilayer film 4d and the peripheral region forming multilayer film 4e while leaving a gap 30 between the edge portion 4e1 of the peripheral region forming multilayer film 4e that is connected to the central region forming multilayer film 4d and the adhesive layer 4b.

[0070] According to such a manufacturing method of the decorative panel 4, the void 30 can be left in the manufactured decorative panel 4. Therefore, compared to when the void 30 is not provided, it is possible to increase the height of the edge portion 4e1 of the peripheral region-forming multilayer film 4e from the base material 4a.

[0071] While the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to the above-described embodiments. The shapes and combinations of the components shown in the above-described embodiments are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present invention.

[0072] For example, in the above embodiment, the process of forming the adhesive layer 4b using a sheet-like adhesive sheet 50 has been described. However, the present invention is not limited to this. For example, as described above, it is also possible to form the adhesive layer 4b by drying and hardening a flowable adhesive. By using a flowable adhesive in this way, it is possible to reduce or eliminate the void 30. In other words, it is possible to adjust the height of the step 40 by changing the material from which the adhesive layer 4b is formed.

[0073] Furthermore, in the above embodiment, an autoclave treatment step may be performed before the substrate pressing step and after the adhesive layer arranging step, in which the voids 30 are reduced in size using high-temperature steam in a high-pressure environment. FIG. 12 is a schematic diagram showing an outline of the autoclave treatment step. As shown in this figure, in the autoclave treatment step, the multilayer film 4c before pressing the substrate 4a is heated using high-temperature steam X in a high-pressure environment. This causes the air that forms the voids 30 to be finely dispersed, reducing the size of the voids 30. Therefore, by performing such an autoclave treatment step, it is possible to adjust the height of the step 40.

[0074] Furthermore, the present invention can employ the configurations described in the following supplementary notes.

[0075] (Appendix 1) A decorative part for a vehicle, A substrate; a first multilayer film portion and a second multilayer film portion that are bonded to the same surface of the base material via an adhesive layer and are disposed adjacent to each other and have different thickness dimensions; Equipped with each of the first multilayer film portion and the second multilayer film portion has a plurality of functional layers arranged in a stacked manner; At least a part of the functional layer included in the first multilayer film portion is different from the functional layer included in the second multilayer film portion, A step is formed at the boundary between the first multilayer film portion and the second multilayer film portion. A decorative part for a vehicle.

[0076] (Appendix 2) 2. A decorative component for a vehicle according to claim 1, characterized in that a gap is provided between the edge of the second multilayer film portion connected to the first multilayer film portion and the adhesive layer.

[0077] (Appendix 3) The first multilayer film portion has, as the functional layer, a light-shielding layer that blocks visible light; a colored layer that is visible from the opposite side of the base material and has a different color from the light-shielding layer; and The second multilayer film portion has, as the functional layer, The optical fiber has only a light-transmitting layer that can transmit visible light. 3. A decorative part for a vehicle according to claim 1 or 2.

[0078] (Appendix 4) The second multilayer film portion has the following as the light-transmitting layer: It has a smoke layer that scatters and transmits visible light. 4. A decorative part for a vehicle according to claim 3.

[0079] (Appendix 5) The first multilayer film portion and the second multilayer film portion have, as the functional layer, a step reduction layer that reduces the step; The step reduction layer of the first multilayer film portion and the step reduction layer of the second multilayer film portion are connected to each other. 3. A decorative part for a vehicle according to claim 1 or 2.

[0080] (Appendix 6) The first multilayer film portion and the second multilayer film portion have, as the functional layer, A transparent layer is provided as a surface layer on the opposite side of the substrate and has a thickness dimension larger than that of the other functional layers. 3. A decorative part for a vehicle according to claim 1 or 2.

[0081] (Appendix 7) 3. A decorative part for a vehicle according to claim 1 or 2, wherein the first multilayer film portion and the second multilayer film portion have the same functional layer connected to each other.

[0082] (Appendix 8) A method for manufacturing a decorative part for a vehicle, The vehicle decorative part is A substrate; a first multilayer film portion and a second multilayer film portion that are bonded to the same surface of the base material via an adhesive layer and are disposed adjacent to each other and have different thickness dimensions; Equipped with each of the first multilayer film portion and the second multilayer film portion has a plurality of functional layers arranged in a stacked manner; a functional layer lamination process in which a functional layer included in the first multilayer film portion and different from the transparent layer and a functional layer included in the second multilayer film portion and different from the transparent layer are adjacently disposed with respect to a transparent layer which is one of the functional layers commonly possessed by the first multilayer film portion and the second multilayer film portion; an adhesive layer arranging step of adhering an adhesive layer to the first multilayer film portion and the second multilayer film portion from the side opposite to the transparent layer; a substrate pressing step of pressing the flat substrate against the first multilayer film portion and the second multilayer film portion via the adhesive layer while supporting the transparent layer; and In the substrate pressing step, a step is formed at the boundary between the first multilayer film portion and the second multilayer film portion. A method for manufacturing a decorative part for a vehicle, comprising:

[0083] (Appendix 9) 9. The method for manufacturing a decorative part for a vehicle according to claim 8, wherein in the substrate pressing step, the substrate is pressed against the first multilayer film portion and the second multilayer film portion while leaving a gap between the edge of the second multilayer film portion connected to the first multilayer film portion and the adhesive layer, thereby forming the step.

[0084] (Appendix 10) 10. The method for manufacturing a decorative part for a vehicle according to claim 9, characterized in that an autoclave treatment step is carried out before the substrate pressing step and after the adhesive layer placement step, in which the voids are reduced using high-temperature steam in a high-pressure environment. [Explanation of symbols]

[0085] 1...Illumination grill, 4...Decorative panel (vehicle decorative part), 4a...Base material, 4b...Adhesive layer, 4c...Multilayer film, 4d...Central area forming multilayer film (first multilayer film portion), 4e...Peripheral area forming multilayer film (second multilayer film portion), 4e1...Edge portion, 4f...Linear area forming multilayer film, 20...Black layer (light-shielding layer), 21...Smoke layer (transparent layer), 22...Medium layer (transparent layer, step reduction layer), 23...White layer (colored layer), 24...Beige layer (colored layer), 25...Pearl layer (colored layer), 26...Transparent layer, 30...Gap, 40...Step, 50...Adhesive sheet, R1...Square area, R1a...Central area, R1b...Peripheral area, R2...Linear area, X...High-temperature steam

Claims

1. A decorative part for a vehicle, A substrate; a first multilayer film portion and a second multilayer film portion that are bonded to the same surface of the base material via an adhesive layer and are disposed adjacent to each other and have different thickness dimensions; Equipped with each of the first multilayer film portion and the second multilayer film portion has a plurality of functional layers arranged in a stacked manner; At least a part of the functional layer included in the first multilayer film portion is different from the functional layer included in the second multilayer film portion, A step is formed at the boundary between the first multilayer film portion and the second multilayer film portion. A decorative part for a vehicle.

2. 2. The decorative component for a vehicle according to claim 1, wherein a gap is provided between the adhesive layer and an edge of the second multilayer film portion connected to the first multilayer film portion.

3. The first multilayer film portion includes, as the functional layer, a light-shielding layer that blocks visible light; a colored layer that is visible from the opposite side of the base material and has a different color from the light-shielding layer; and The second multilayer film portion includes, as the functional layer, The optical fiber has only a light-transmitting layer that can transmit visible light.

3. The decorative part for a vehicle according to claim 1 or 2.

4. A method for manufacturing a decorative part for a vehicle, The vehicle decorative part is A substrate; a first multilayer film portion and a second multilayer film portion that are bonded to the same surface of the base material via an adhesive layer and are disposed adjacent to each other and have different thickness dimensions; Equipped with each of the first multilayer film portion and the second multilayer film portion has a plurality of functional layers arranged in a stacked manner; a functional layer lamination process in which, with respect to a transparent layer which is one of the functional layers commonly possessed by the first multilayer film portion and the second multilayer film portion, the functional layer which is included in the first multilayer film portion and is different from the transparent layer and the functional layer which is included in the second multilayer film portion and is different from the transparent layer are disposed adjacent to each other; an adhesive layer arranging step of adhering an adhesive layer to the first multilayer film portion and the second multilayer film portion from the side opposite to the transparent layer; a substrate pressing step of pressing the flat substrate against the first multilayer film portion and the second multilayer film portion via the adhesive layer while supporting the transparent layer; and In the substrate pressing step, a step is formed at the boundary between the first multilayer film portion and the second multilayer film portion. A method for manufacturing a decorative part for a vehicle, comprising:

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