JP2023102872A - Decorative component and manufacturing method for decorative component - Google Patents

Abstract

To secure preferable contrast between a part where a predetermined pattern is positioned and its adjacent part, when a design layer is viewed with an illuminating device on.SOLUTION: A decorative component 2 in which a predetermined pattern 3 is visible when an illuminating device 30 provided on a back surface is turned on and the predetermined pattern 3 is invisible when the illuminating device 30 is turned off, includes: a light shielding layer 15 in which laser processing portions 17 for transmitting light of the illuminating device 30 are formed in a predetermined pattern 3 and that has a material that reacts to laser light; a transparent layer 14 that is placed on a surface of the light shielding layer 15 in the form of layers and is made of a material that does not react to laser light; and a design layer 13 that is placed on a surface of the transparent layer 14 in the form of layers and has a predetermined transmittance at which light is transmitted when the illuminating device 30 is turned on and the predetermined pattern 3 is invisible when the illuminating device 30 is turned off; wherein the design layer 13 and the transparent layer 14 have substantially the same refractive index.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a decorative component and a method for manufacturing the decorative component.

Patent Document 1 discloses an illuminating decorative sheet having a light-shielding colored layer partially laminated on a base sheet and a light-shielding colored layer entirely or partially laminated on a base sheet, in which a light-shielding pattern portion and a light-transmitting pattern portion are formed. In this illuminating decorative sheet, the light-transmitting pattern portion (predetermined pattern) is illuminated when the light source irradiates from the back surface to facilitate recognition.

In addition to screen printing, laser processing is also known as a method for forming the translucent pattern. Patent Literature 2 discloses a panel member in which an opaque printed layer is removed with a laser beam to form a hole through which light can pass. Since laser light reacts with carbon to generate heat, this printed layer is a layer containing carbon black. However, after penetrating the layer to be processed, the laser light may also process the layer on the back side.

On the other hand, Patent Document 3 discloses a laminate in which a barrier layer is provided on the back surface of a laser coloring layer to be laser-processed to protect the offset printing layer on the back surface.

Japanese Patent Application Laid-Open No. 2001-272935 Japanese Patent Application Laid-Open No. 2001-030290 WO2017/014258

In forming the light-transmitting pattern portion of the illuminating decorative sheet of Patent Document 1, it is conceivable to apply laser processing and apply a barrier layer as in Patent Document 3. That is, the barrier layer of Patent Document 3 is interposed between the light-shielding colored layer and the translucent colored layer of Patent Document 1.

However, in such a configuration, since an extra barrier layer is interposed, light may be reflected at the interface between the translucent colored layer and the barrier layer depending on the difference in refractive index between the two layers, making it difficult to clearly see the predetermined pattern to be transmissive.

The present invention has been made in view of the above points.

According to one aspect of the present invention, the decorative component provided on the back surface, in which a predetermined pattern is visible when the lighting device is turned on and the predetermined pattern is not visible when the lighting device is turned off, includes a light-shielding layer having a material that reacts to laser light, a transparent layer that is laminated on the surface of the light-shielding layer and made of a material that does not react to laser light, a transparent layer that is laminated on the surface of the light-shielding layer and made of a material that does not react to the laser light, and a transparent layer that is laminated on the surface of the transparent layer and transmits light when the lighting device is turned on, and the predetermined pattern when the lighting device is turned off. and a design layer having a predetermined transmittance that makes the transparent layer invisible, and the design layer and the transparent layer have substantially the same refractive index.

According to another aspect of the present invention, there is provided a manufacturing method for manufacturing a decorative component in which a predetermined pattern is visible when a lighting device provided on the back side is turned on and the predetermined pattern is invisible when the lighting device is turned off. A lamination step of forming a laminated film portion by laminating transparent layers having a refractive index of , and a laser processing step of irradiating the laminated film portion with a laser beam from the light shielding layer side and removing a part of the light shielding layer with the laser beam to form a hole of the predetermined pattern.

In the above aspect, the decorative component includes a transparent layer that does not react to laser light between the design layer and the light shielding layer that reacts to laser light. Therefore, when laser processing is performed from the light shielding layer side, a part of the light shielding layer is removed while the design layer is protected from the laser light by the transparent layer, and a hole for transmitting light from the lighting device can be formed. Moreover, the design layer and the transparent layer have substantially the same refractive index. Therefore, when the illumination device is provided on the back surface of the decorative component and light is irradiated, it is possible to prevent the light from diffusely reflecting and diffusing at the interface between the design layer and the transparent layer. Therefore, when looking at the design layer when the lighting device is turned on, it is possible to ensure a favorable contrast between the location where the predetermined pattern is located and the adjacent location.

FIG. 1 is a perspective view of an instrument panel to which a decorative component according to an embodiment of the invention is applied. FIG. 2 is a cross-sectional view showing only part of the decorative component. FIG. 3A is a cross-sectional view of the decorative component, and is a diagram for explaining when the lighting device is turned off. FIG. 3B is a diagram illustrating display of a predetermined pattern in the state of FIG. 3A. FIG. 4A is a cross-sectional view of the decorative component, and is a diagram for explaining the lighting of the lighting device. FIG. 4B is a diagram illustrating display of a predetermined pattern in the state of FIG. 4A. FIG. 5 is a cross-sectional view for explaining the lamination process. FIG. 6 is a cross-sectional view explaining the shaping process. FIG. 7 is a cross-sectional view for explaining the laser processing process. FIG. 8 is a cross-sectional view for explaining the molding process.

A decorative component 2 according to an embodiment of the present invention and a method for manufacturing the decorative component 2 will be described below with reference to the accompanying drawings.

First, a decorative component 2 and an instrument panel 1 of a vehicle (not shown) such as an automobile to which the decorative component 2 is applied will be described with reference to FIGS. FIG. 1 is a perspective view of an instrument panel 1 to which a decorative component 2 is applied. FIG. 2 is a cross-sectional view showing only part of the decorative component 2. As shown in FIG.

As shown in FIGS. 1 and 2, the instrument panel 1 has a decorative component 2 and a lighting device 30 (see FIG. 2). The instrument panel 1 is provided in the interior of the vehicle. The instrument panel 1 is provided in front of the passenger compartment including the front of the driver's seat. The instrument panel 1 is provided with instruments (not shown) that indicate vehicle information.

The decorative component 2 is formed into a free-form curved surface, at least a part of which is a three-dimensional curved surface. The decorative component 2 is exposed in the interior of the vehicle. The decorative component 2 has a plurality of predetermined patterns 3.

The decorative component 2 is provided as part of the instrument panel 1 . In the decorative component 2, the predetermined pattern 3 is visible when the lighting device 30 provided on the back is turned on, and the predetermined pattern 3 is invisible when the lighting device 30 is turned off. That is, the decorative part 2 does not appear to have the predetermined pattern 3 when the lighting device 30 is turned off, and the predetermined pattern 3 is visible only when the lighting device 30 is turned on.

The decorative component 2 is pressed by the user. The decorative component 2 functions as an operating section (switch) for operating an air conditioner. The predetermined pattern 3 is a design or characters that indicate what operation the operation unit is used for. The decorative component 2 includes a laminated film portion 10 and a substrate 20 (see FIG. 2). Hereinafter, the surface of the decorative component 2 exposed to the interior of the vehicle is referred to as the "front surface", the surface facing the lighting device 30 is referred to as the "rear surface", and the direction in which the laminated film portion 10 is laminated is referred to as the "laminating direction".

As shown in FIG. 2, the laminated film portion 10 is formed by laminating a plurality of layers having different functions in the lamination direction. The laminated film portion 10 has a surface protective layer 11 , a support film 12 , a design layer 13 , a transparent layer 14 and a light shielding layer 15 .

The surface protective layer 11 is a UV coating for protecting the surface of the decorative component 2. As shown in FIG. The surface protective layer 11 is made of a colorless and transparent resin material.

The support film 12 is a film-like member for supporting the design layer 13, the transparent layer 14, and the light shielding layer 15 when the decorative component 2 is manufactured. The support film 12 is formed in a film shape from a colorless and transparent material, specifically PC (polycarbonate) resin.

The design layer 13 is laminated on the back surface of the support film 12 and the surface of the transparent layer 14 . The design layer 13 is formed by printing PU (polyurethane) ink containing a pigment on the support film 12 . The design layer 13 is a translucent decorative layer that reflects light emitted from the front surface and transmits light emitted from the illumination device 30 emitted from the back surface. That is, the design layer 13 has a predetermined transmittance that allows light to pass therethrough when the lighting device 30 is turned on, and makes the predetermined pattern 3 invisible when the lighting device 30 is turned off. The design layer 13 is composed of a colored translucent material in which a pigment is added to the same colorless and transparent material that constitutes the transparent layer 14 .

The design layer 13 has a main design layer 13a and a chromaticity correction layer 13b. The main design layer 13a and the chromaticity correction layer 13b are each formed by printing PU inks containing different pigments. Since the main design layer 13a and the chromaticity correction layer 13b contain the same PU ink as the transparent layer 14, they have substantially the same refractive index as the transparent layer 14. That is, the design layer 13 is formed of a plurality of layers each having substantially the same refractive index as the transparent layer 14 .

The main design layer 13a constitutes a design visible from the surface. The main design layer 13a has a design such as piano black or wood grain.

The chromaticity correction layer 13b is formed in a color opposite to the light that passes through the main design layer 13a and is viewed from the front side so that the light of the lighting device 30 that has passed through the design layer 13 looks white. For example, when the main design layer 13a is piano black, the chromaticity correction layer 13b is formed as a blue layer, which is the opposite color of yellow, because the light passing through the main design layer 13a reacts with the carbon of the piano black and looks yellow. Thus, the color of the chromaticity correction layer 13b is set to match the color of the main design layer 13a. If the light passing through the main design layer 13a looks white, the chromaticity correction layer 13b may not be provided.

The transparent layer 14 is laminated on the back surface of the design layer 13 and on the surface of the light shielding layer 15 . Transparent layer 14 does not contain carbon. That is, the transparent layer 14 is made of a material that does not react to laser light. Not reacting to laser light means that the material alone is not processed even if it is irradiated with laser light, and even if it is processed, the amount is very small. In the present embodiment, even if the transparent layer 14 melts due to heat generated when the light shielding layer 15 is laser-processed as will be described later, it is not interpreted as a reaction to the laser beam. The transparent layer 14 is composed of a colorless and transparent material. The transparent layer 14 is formed by printing PU ink containing no pigment over the design layer 13 . The PU ink forming the transparent layer 14 is the same as the PU ink forming the design layer 13 . The transparent layer 14 protects the design layer 13 from laser light in a laser processing step, which will be described later. The transparent layer 14 is formed with a thickness of at least 5 [μm], preferably 5 to 15 [μm]. As a laser beam that reacts with carbon, for example, a CO ₂ laser, a YAG laser, a hybrid laser of CO ₂ and YAG, or the like can be used.

The light shielding layer 15 has a black mask layer 15a, a pressing layer 15b, a protective layer 15c, and a binder layer 15d in the stacking direction. The light shielding layer 15 contains carbon. That is, the light shielding layer 15 has a material that reacts to laser light. The light-shielding layer 15 has a light-shielding portion 16 that blocks light from the lighting device 30, and a laser-processed portion 17 that is formed in the light-shielding portion in the shape of a predetermined pattern 3 by laser processing and serves as a hole that transmits the light from the lighting device 30, in a direction that intersects perpendicularly with the stacking direction.

The black mask layer 15a is a black opaque layer. The black mask layer 15a is provided in a portion except for the laser-processed portion 17 forming the predetermined pattern 3, and forms the light shielding portion 16. As shown in FIG. The black mask layer 15a is formed by printing a PU ink containing a pigment on the transparent layer 14 .

The pressing layer 15b is provided to press the black mask layer 15a. The pressing layer 15b is provided on a portion other than the laser-processed portion 17 forming the predetermined pattern 3. As shown in FIG. The pressing layer 15b is formed by printing a PU ink containing a pigment on the black mask layer 15a.

The protective layer 15c is provided to protect the black mask layer 15a. The protective layer 15c is provided on a portion other than the laser-processed portion 17 forming the predetermined pattern 3. As shown in FIG. The protective layer 15c is formed by printing a pigment-containing PU ink over the pressing layer 15b.

The binder layer 15d is a binder material for bonding the light shielding layer 15 and the base material 20 together. The binder layer 15 d is provided on a portion other than the laser-processed portion 17 forming the predetermined pattern 3 . The binder layer 15d is formed by printing a pigment-containing PU ink over the protective layer 15c.

The base material 20 is provided on the back surface of the light shielding layer 15 . The substrate 20 is made of a resin different from that of the laminated film portion 10, specifically PC (polycarbonate) resin. In place of the PC resin, PMMA (Poly Methyl Methylacrylate: acrylic) or PC resin+ABS (Acrylonitrile Butadiene Styrene) resin may be used. The base material 20 is formed so as to cover the rear surface of the light shielding portion 16 and to enter the laser processed portion 17 . The base material 20 guides the light emitted by the illumination device 30 to the laser processed portion 17 forming the predetermined pattern 3 . The base material 20 is molded integrally with the laminated film portion 10 by a molding process to be described later.

Next, operation of the decorative component 2 will be described with reference to FIGS. 3A to 4B. FIG. 3A is a cross-sectional view of the decorative component 2, and is a diagram for explaining when the illumination device 30 is turned off. FIG. 3B is a diagram illustrating display of the predetermined pattern 3 in the state of FIG. 3A. FIG. 4A is a cross-sectional view of the decorative component 2, and is a diagram for explaining the lighting of the lighting device 30. FIG. FIG. 4B is a diagram illustrating display of the predetermined pattern 3 in the state of FIG. 4A. 3B and 4B show an example of a predetermined pattern 3 that is used for the operation of setting the air conditioner to internal air circulation.

As shown in FIG. 3A , when the illumination device 30 is turned off, light such as natural light emitted from the surface of the decorative component 2 is reflected on the surface of the main design layer 13 a in the design layer 13 and does not pass through the decorative component 2 . Therefore, as shown in FIG. 3B, the predetermined pattern 3 is invisible from the surface.

On the other hand, as shown in FIG. 4A, when the illumination device 30 is turned on, the light emitted from the back surface of the decorative component 2 by the illumination device 30 passes through the decorative component 2 from the back surface to the front surface. Therefore, as shown in FIG. 4B, the predetermined pattern 3 is visible from the surface.

At this time, the design layer 13 is formed of a plurality of layers (the main design layer 13a and the chromaticity correction layer 13b) each having substantially the same refractive index as the transparent layer 14. FIG. As a result, the light from the illumination device 30 can be prevented from diffusely reflected at the interface between the design layer 13 and the transparent layer 14 . If such irregular reflection were to occur, a small amount of light would be transmitted through a portion of the design layer 13 where there is no predetermined pattern 3, and as a result, the outline of the predetermined pattern 3 would appear blurred. In contrast, in the present embodiment, it is possible to prevent the contour of the predetermined pattern 3 from appearing blurred. That is, when the design layer 13 is viewed when the illumination device 30 is turned on, a favorable contrast is ensured between the location where the predetermined pattern 3 is located and the adjacent location.

Next, a manufacturing method for manufacturing the decorative component 2 will be described with reference to FIGS. 5 to 8. FIG.

First, as shown in FIG. 5, a transparent layer 14 that does not contain carbon and has substantially the same refractive index as the design layer 13 is laminated between the light shielding layer 15 that contains carbon and blocks the light from the lighting device 30 and the design layer 13 that transmits light when the lighting device 30 is turned on and has a predetermined transmittance that makes the predetermined pattern 3 invisible when the lighting device 30 is turned off (lamination step).

Specifically, PU inks forming the main design layer 13a and the chromaticity correction layer 13b are sequentially printed from above (back surface) of the support film 12 to form the design layer 13, PU inks forming the transparent layer 14 are printed from above the design layer 13, and PU inks forming the black mask layer 15a, the holding layer 15b, the protective layer 15c, and the binder layer 15d are printed in order from above the transparent layer 14 to form the light shielding layer 15. Thereby, the laminated film portion 10 is formed.

At this time, the design layer 13, the transparent layer 14, and the light shielding layer 15 contain the same material (PU). Therefore, the adhesion between the design layer 13, the transparent layer 14, and the light shielding layer 15 can be improved.

At this point, the support film 12 is formed flat. Therefore, the design layer 13, the transparent layer 14, and the light shielding layer 15 can be formed by screen printing.

Subsequently, as shown in FIG. 6, the laminated film portion 10 laminated in the lamination step is shaped into a three-dimensionally curved shape (shaping step).

Specifically, in the shaping step, the laminated film portion 10 is placed in the shaping device 40 and shaped. In the shaping step, the laminated film portion 10 is heated to soften, shaped by pressure while being easily deformable, and then hardened by cooling. As a result, the laminated film portion 10 has the final shape that constitutes the vehicle decorative component 2 .

Subsequently, as shown in FIG. 7, a laser device 50 is used to irradiate a laser beam from the light shielding layer 15 side of the laminated film portion 10 to partially remove the light shielding layer 15 with the laser beam, thereby forming a predetermined pattern 3 on the laminated film portion 10 (laser processing step).

Specifically, the focal point 51 of the laser light emitted by the laser device 50 is set to be at a position in the light shielding layer 15 away from the transparent layer 14 . The energy of the laser light is concentrated at the focal point 51, and heat is generated in each layer of the light shielding layer 15 containing carbon. Each layer of the light shielding layer 15 is sublimated by this heat, and a laser-processed portion 17 having the shape of the predetermined pattern 3 is formed in a part of the light shielding portion 16 .

At this time, since the laminated film portion 10 is provided with the transparent layer 14 containing no carbon, the design layer 13 is protected by the transparent layer 14 and is not affected by the laser beam. Therefore, it is possible to form the laser-processed portion 17 by partially removing the light shielding layer 15 without affecting the design layer 13 .

As described above, the decorative component 2 includes the light shielding layer 15 containing carbon and the transparent layer 14 containing no carbon. The light-shielding layer 15 has a light-shielding portion 16 that blocks light from the lighting device 30 and a laser-processed portion 17 that is formed into a predetermined pattern 3 by laser processing on the light-shielding portion 16 and transmits the light from the lighting device 30 . At this time, since the transparent layer 14 containing no carbon is provided, the design layer 13 is protected by the transparent layer 14, and it is possible to form the laser-processed portion 17 by partially removing the light-shielding layer 15 with laser light without affecting the design layer 13. Therefore, when forming the predetermined pattern 3 on a three-dimensional curved surface, for example, it is possible to form the predetermined pattern 3 by laser processing after shaping the decorative component 2 . Therefore, the positional accuracy of the predetermined pattern 3 on the decorative component 2 can be improved.

Subsequently, in order to install the laminated film portion 10 in the mold device 60, the laminated film portion 10 is turned upside down (front and back) (reversal step).

Subsequently, as shown in FIG. 8, insert molding with a transparent resin is performed in a state in which the laminated film portion 10 is arranged in the first mold 61 on the movable side of the mold device 60 so that the light shielding layer 15 faces the second mold 62 on the fixed side of the mold device 60 (molding step).

Specifically, the mold device 60 is filled with colorless and transparent PC resin through the gate 63 while the laminated film portion 10 is placed in the first mold 61 of the mold device 60 . After that, the first mold 61 is separated from the second mold 62, and the molded product is released from the second mold 62 by ejecting it with an ejector pin (not shown). As a result, the base material 20 is formed on the back surface of the light shielding layer 15 in the laminated film portion 10 .

As described above, the decorative component 2 is formed by performing the lamination process, the shaping process, the laser processing process, the reversing process, and the molding process.

According to the above embodiment, the following effects are obtained.

A decorative component 2 provided on the rear surface, in which a predetermined pattern 3 is visible when the lighting device 30 is turned on and is invisible when the lighting device 30 is turned off, has a laser-processed portion 17 that transmits light from the lighting device 30 formed in the predetermined pattern 3, a light-shielding layer 15 having a material that reacts to the laser light, a transparent layer 14 that is laminated on the surface of the light-shielding layer 15 and made of a material that does not react to the laser light, and is laminated on the surface of the transparent layer 14 and transmits light when the lighting device 30 is turned on. and a design layer 13 having a predetermined transmittance that makes the predetermined pattern 3 invisible when the illumination device 30 is turned off. The design layer 13 and the transparent layer 14 have substantially the same refractive index.

A manufacturing method for manufacturing a decorative component 2 in which a predetermined pattern 3 is visible when a lighting device 30 provided on the rear surface is turned on and is invisible when the lighting device 30 is turned off, wherein a material that does not react to laser light is placed between a light shielding layer 15 that has a material that reacts to laser light and blocks light from the lighting device 30 and a design layer 13 that transmits light when the lighting device 30 is turned on and has a predetermined transmittance that makes the predetermined pattern 3 invisible when the lighting device 30 is turned off. A lamination step of forming the laminated film portion 10 by laminating a transparent layer 14 having substantially the same refractive index as that of the final layer 13, and a laser processing step of irradiating the laminated film portion 10 with a laser beam from the light shielding layer 15 side and removing a part of the light shielding layer 15 with the laser beam to form a laser processed portion 17 having a predetermined pattern 3.

In these configurations, the decorative component 2 includes the transparent layer 14 that does not react to laser light between the design layer 13 and the light shielding layer 15 that reacts to laser light. Therefore, while the design layer 13 is protected from the laser light by the transparent layer 14, part of the light shielding layer 15 can be removed to form the laser processed portion 17 for transmitting the light from the illumination device 30. Moreover, the design layer 13 and the transparent layer 14 have substantially the same refractive index. Therefore, when the lighting device 30 is provided on the back surface of the decorative component 2 and light is irradiated, it is possible to prevent the light from diffusely reflecting and diffusing at the interface between the design layer 13 and the transparent layer 14.例文帳に追加Therefore, when looking at the design layer 13 when the illumination device 30 is turned on, it is possible to ensure a favorable contrast between the location where the predetermined pattern 3 is located and the adjacent location.

Further, when the predetermined pattern 3 is formed in the laser processing process, the focal point 51 of the laser light emitted from the laser device 50 is set to a position in the light shielding layer 15 away from the transparent layer 14 . The energy of the laser light is concentrated at the focal point 51, and heat is generated in each layer of the light shielding layer 15 containing carbon. Each layer of the light shielding layer 15 is sublimated by this heat, and a laser-processed portion 17 having the shape of the predetermined pattern 3 is formed in a part of the light shielding portion 16 .

At this time, since the laminated film portion 10 is provided with the transparent layer 14 containing no carbon, the design layer 13 is protected by the transparent layer 14 and is not affected by the laser beam. Therefore, it is possible to form the laser-processed portion 17 by partially removing the light shielding layer 15 without affecting the design layer 13 .

Therefore, when forming the predetermined pattern 3 on a three-dimensional curved surface, for example, it is possible to form the predetermined pattern 3 by laser processing after shaping the decorative component 2 . Therefore, the positional accuracy of the predetermined pattern 3 on the decorative component 2 can be improved.

Although the embodiments of the present invention have been described above, the above embodiments merely show a part of application examples of the present invention, and are not intended to limit the technical scope of the present invention to the specific configurations of the above embodiments.

1 Instrument panel 2 Decorative part 3 Predetermined pattern 10 Laminated film part 13 Design layer 13a Main design layer 13b Chromaticity correction layer 14 Transparent layer 15 Light shielding layer 16 Light shielding part 17 Laser processing part 30 Lighting device 50 Laser device 60 Mold device 61 First mold 62 Second mold

Claims (10)

A decorative component in which a predetermined pattern is visible when an illumination device provided on the back surface is lit and the predetermined pattern is invisible when the illumination device is extinguished,
a light-shielding layer having holes formed in the predetermined pattern for transmitting the light of the lighting device and having a material that reacts to laser light;
a transparent layer laminated on the surface of the light shielding layer and made of a material that does not react to laser light;
a design layer that is laminated on the surface of the transparent layer and has a predetermined transmittance that transmits light when the lighting device is turned on and that makes the predetermined pattern invisible when the lighting device is turned off;
with
The design layer and the transparent layer have substantially the same refractive index,
A decorative part characterized by: The decorative part according to claim 1,
The transparent layer is made of a colorless and transparent material,
The design layer is composed of a colored translucent material obtained by adding a pigment to the colorless and transparent material.
A decorative part characterized by: The decorative component according to claim 1 or 2,
wherein the design layer is formed of a plurality of layers each having substantially the same refractive index as the transparent layer;
A decorative part characterized by: The decorative component according to any one of claims 1 to 3,
The design layer, the transparent layer, and the light shielding layer contain the same material,
A decorative part characterized by: A manufacturing method for manufacturing a decorative component in which a predetermined pattern is visible when a lighting device provided on the back is turned on and the predetermined pattern is invisible when the lighting device is turned off,
A lamination step of forming a laminated film portion by laminating a transparent layer made of a material that does not react to laser light and having substantially the same refractive index as the design layer so as to sandwich a light-shielding layer that has a material that reacts to laser light and blocks light from the lighting device and a design layer that transmits light when the lighting device is turned on and has a predetermined transmittance that makes the predetermined pattern invisible when the lighting device is turned off;
a laser processing step of irradiating the laminated film portion from the light shielding layer side with a laser beam and removing part of the light shielding layer with the laser beam to form holes of the predetermined pattern;
A method for manufacturing a decorative part, characterized by: A method for manufacturing the decorative part according to claim 5,
The transparent layer is made of a colorless and transparent material,
The design layer is composed of a colored translucent material obtained by adding a pigment to the colorless and transparent material.
A method for manufacturing a decorative part, characterized by: A method for manufacturing the decorative part according to claim 5 or 6,
wherein the design layer is formed of a plurality of layers each having substantially the same refractive index as the transparent layer;
A method for manufacturing a decorative part, characterized by: A method for manufacturing a decorative component according to any one of claims 5 to 7,
The design layer, the transparent layer, and the light shielding layer contain the same material,
A method for manufacturing a decorative part, characterized by: A method for manufacturing a decorative component according to any one of claims 5 to 8,
Further comprising a shaping step of shaping the laminated film portion laminated in the laminating step into a three-dimensionally curved shape before the laser processing step,
A method for manufacturing a decorative part, characterized by: A method for manufacturing a decorative component according to any one of claims 5 to 9,
Further comprising a molding step of performing insert molding with a transparent resin in a state in which the laminated film portion is arranged in the first mold of the mold device so that the light shielding layer faces the second mold of the mold device,
A method for manufacturing a decorative part, characterized by:

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