WO2004073974A1

WO2004073974A1 - Decorative foil

Info

Publication number: WO2004073974A1
Application number: PCT/JP2003/001740
Authority: WO
Inventors: Shigeo Kawabata
Original assignee: Kishimoto, Takaharu
Priority date: 2003-02-18
Filing date: 2003-02-18
Publication date: 2004-09-02
Also published as: AU2003211456A1; CN1750926A; JPWO2004073974A1

Abstract

A decorative foil prepared by transfer printing, comprising a decorative layer formed on a primer layer, and a curing resin layer formed by heat or radiation curing after applied to the decorative layer so as to cover the surface thereof, the decorative layer having a metal thin-film layer formed by a sputtering method or the like.

Description

Decorative foil technology

INDUSTRIAL APPLICABILITY The present invention is suitable for, for example, an exterior wall of a building, a building member such as a front door of a house, an exterior / interior of an automobile, an exterior / interior of a vehicle / vessel, an interior of a vehicle, a signboard, a sign, etc., where a mirror effect is required as a design. The present invention relates to a usable decorative foil, a method for producing the same, and an automobile part modified thereby.

book

Background art

For example, in order to enhance the design of building materials such as building exterior walls, residential entrance doors, signs, signs, etc., a decorative sheet with coloring or other makeup is applied, or a decorative decorative foil is used as the base material. May be adhered to.

Conventionally, as decorative foil excellent in design that can be created with high work efficiency, a printing layer that is printed on the release surface of the release sheet with ink and has a release property on the release surface, and a thermosetting resin paint One type of curable resin paint selected from the group consisting of an electron beam curable resin paint, a radiation curable resin paint, and an ultraviolet curable resin paint is applied and cured so as to cover the surface of the print layer. There has been proposed a decorative paint foil having a foil body composed of a coated film layer (Japanese Patent Application Laid-Open No. 2001-14883).

According to the above technique, a decorative foil having excellent design properties, abrasion resistance and the like can be adhered or adhered to easily apply makeup to a base at a work site.

Here, when the decorative foil is to be decorated with metallic luster using the above technique, a metallic pigment containing a binder component is printed in a printing process to form a printed layer.

However, in the decorative foil obtained by this method, since the obtained printed layer only has individual metal particles bonded by a binder component, even if a mirror effect is desired by the metal, the decorative layer is not reflected by the metal particles. However, since the design has a metallic tone, it has not been possible to obtain a decorative foil having a plating tone. Here, the metallic tone means that a paint containing a metal powder pigment is applied to give the coating a metallic surface feeling. On the other hand, the plating tone means giving a uniform metal surface feeling without diffuse reflection obtained by reflection of a metal thin film.

In addition, it was difficult to reduce the thickness of the printed layer to 10 m or less in order to print the metal-containing layer uniformly in the printing process. Therefore, with the above-mentioned technology, it was not possible to produce a decorative foil having a high design property and having a metal reflecting effect while being transparent.

Therefore, in order to obtain a decorative foil having a plating-like effect by using the manufacturing method of the above technology, in the above printing step, only a layer called an underlayer disclosed in the above document is printed, and then the electrolytic plating is performed. It is conceivable to form a metal thin film layer using a method or a general metal thin film forming method.

However, in order to use the electroplating method, the release sheet for printing must be a conductive sheet, and it is necessary to prevent the underlying layer from being dissolved in the electrolytic solution. Therefore, it is not economically viable.

On the other hand, even if an attempt is made to simply form a metal thin film on a base layer by a metal thin film method by a metal thin film method, for example, in a sputtering method or a vapor deposition method, the metal sputtered or evaporated metal is repelled by the base layer. Therefore, a metal thin film layer could not be formed. For example, if this is attempted by increasing the acceleration energy of the ions in the sputtering method, the sputtered metal particles pass through the underlayer and are directly laminated on the release sheet for printing. The metal thin film layer could not be transferred to the foil, and eventually such a decorative foil could not be obtained.

Therefore, the decorative foil obtained by the above technology can be used for the mirror and bumper parts of automobiles that require the effect of plating, especially as a design property, and for vehicles such as automobile body bodies, exterior and interior of ships, etc. It was difficult.

An object of the present invention has been made in view of the above circumstances, and has a design, an abrasion resistance, and an operation manufactured by a technique disclosed in JP-A-2001-14883. It is an object of the present invention to provide a decorative foil suitable for a decorative foil excellent in workability on site, particularly when the decorative foil requires an effect of giving a clinging tone, and a method for producing the decorative foil. Disclosure of the invention

The decorative foil of the present invention has at least a decorative layer on the primer layer, and a heat- or radiation-curable resin layer formed by application and curing so as to cover the surface of the decorative layer. In the decorative foil, the decorative layer has a metal thin film layer.

In the present invention, radiation refers to electromagnetic waves such as ultraviolet rays, electron beams, and particle beams.

Furthermore, in the decorative foil, the primer layer has a release property from a release surface transferred and formed by a printing release sheet.

Still further, in the decorative foil, the primer layer contains a cross-linking agent.

Still further, in the decorative foil, the thickness of the metal thin film layer is less than 1 O ^ m.

Further, the present invention is an automobile part to which the decorative foil according to claim 1 is adhered. Above all, a metal thin film layer as a decorative layer is provided on the primer layer, and at least a heat- or radiation-curable resin layer formed by coating and hardening to cover the surface of the decorative layer is provided. An automobile in which an adhesive is applied to the decorative foil on the primer layer side of the decorative foil, and the decorative foil is adhered to the surface of the vehicle body as a decorative coating.

Further, it is an unpainted film for three-dimensional molding using the decorative foil of the present invention.

Further, as a production method capable of efficiently producing such a decorative foil, a first step of forming at least a release surface of a release sheet and forming a primer layer having a releasability containing a crosslinking agent by printing, A second step of forming a decorative layer as a metal thin film layer on the primer layer by a sputtering method; and heating the primer layer and the decorative layer on the surface opposite to the release surface with the primer layer and the decorative layer attached to the release sheet. Alternatively, a decorative foil manufacturing method comprising a third step of applying a radiation-curable resin paint and a fourth step of curing the applied curable resin paint to form a curable resin layer. is there.

Also, in the above manufacturing method, a step of forming a decorative layer as a metal thin film layer on the primer layer by vapor deposition is replaced with a step of forming a decorative layer as a metal thin film layer on the primer layer by sputtering. This is a method for producing the used iridescent foil. Since the decorative foil and the method for producing the decorative foil of the present invention are as described above, the plating-like design effect that could not be produced by the technique disclosed in JP-A-2001-14883 was obtained. A decorative foil having high designability such as a decorative foil having a metallic luster while being transparent. Further, it is possible to provide an efficient production method of such a decorative foil. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a cross-sectional view showing a decorative foil according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing a method of manufacturing a decorative foil according to an embodiment of the present invention in the order of steps.

FIG. 2 (a) is a cross-sectional view showing a first step of the method for manufacturing a decorative foil in the embodiment according to the present invention.

FIG. 2 (b) is a cross-sectional view showing a second step of the decorative foil manufacturing method according to the embodiment of the present invention.

FIG. 2 (c) is a cross-sectional view showing a third step of the decorative foil manufacturing method according to the embodiment of the present invention.

FIG. 2 (d) is a sectional view showing a fourth step of the decorative foil manufacturing method in the embodiment according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

A decorative foil according to a first embodiment of the present invention will be described with reference to FIGS. The decorative foil 10 is made of a primer layer 11 and a decorative layer 12, and further applied to cover the surface of the decorative layer 12. 3 at least. The decorative layer 12 has a metal thin film layer. Further, the primer layer 11 contains a crosslinking agent.

It is desirable that the primer layer 11 has a release property with respect to the release surface transferred and formed by the release sheet 24 for printing. Therefore, it is required that the metal film has good releasability from the release sheet 24 for printing and has a laminating property in which a metal thin film subsequently formed as a decorative layer is laminated. For example, polyester resin, alkyd resin, Mino resin, acrylic resin, epoxy resin, salt resin, and the like can be used. In the case of compatible resins, these resins may be mixed or used as a multilayer.

On the other hand, silicone resin and fluorine resin with low surface tension can secure release properties from the release sheet by selecting the material of the release sheet, but even if a cross-linking material explained below is attached, It is not suitable because it is difficult to form a metal thin film. The thickness of the primer layer 11 is not particularly limited, but is 0.3! It is preferably about 50 m, more preferably 1 / im to 10 m. That is, if the thickness of the primer layer is too large, the flexibility of the decorative foil is deteriorated, and in the case of a substrate surface having irregularities, there is a possibility that the decorative foil cannot be properly aligned with the substrate. On the other hand, if it is too thin, the releasability from the release sheet for printing deteriorates.

The primer layer 11 contains a crosslinking agent for laminating a metal thin film layer having a plating-like design effect. Examples of the crosslinking agent include an isocyanate-based crosslinking agent, an epoxy-based crosslinking agent, and an aluminum chelate-based crosslinking agent. The detailed mechanism of why these cross-linking agents can be used to stack metal thin-film layers is unknown. One way of thinking is that the inclusion of a cross-linking agent creates a three-dimensional structure in the molecular chains that make up the primer layer, which makes it easier for metal particles to be trapped in the three-dimensional structure that the molecular chains form. It is thought that there is.

The decorative layer 12 is formed by laminating a metal by a general metal thin film forming method such as a sputtering method or a vapor deposition method so that a plating-like design effect appears when viewed from the curable resin layer 13 side. The decorative layer 12 which is a thin film layer can be formed. In this case, the type of the metal is not particularly limited as long as the metal can form a metal thin film by these methods. In particular, according to the sputtering method, even a low vapor pressure metal can be laminated, so that it can be used regardless of the type of metal. For example, metals such as chromium, aluminum, titanium, gold, and silver can be mentioned. An alloy can also be formed by using a plurality of types of metals. By selecting the type of metal, it is possible to obtain a colorless or colored metallic luster by the color of the metal itself. The thickness of the decorative layer 12 is not particularly limited. However, when a metal thin film is used as the decorative layer, the thickness of the metal thin film is about several meters, and a plating-like design effect can be obtained. When the decorative layer is formed by a sputtering method or a vapor deposition method, the thickness can be easily reduced to less than 10 / xm, which is difficult by a printing method. For this reason, for example, it is possible to create a characteristic design having a metal reflection effect while being transparent, for example, with a thickness of 0.1 lm or less.

In the metal thin film forming step, a layer having a plating design effect can be formed in a required shape portion by using a laminated barrier plate having a specific shape. Further, the decorative layer 12 may be a layer in which a printing layer is provided on the metal thin film layer by a printing method using an ink. In this case, by being transferred, when used, the design can be made up of the metal thin film layer and the printing layer visible from the portion without the metal thin film layer when viewed from the curable resin layer 13 side. As the ink used for the printing layer, a known ink that can be printed on the release surface of the release sheet and can be used, for example, an acrylic resin type, a fluororesin type, an inorganic type, and the like can be used. No. In this step, since the printing step is performed after the metal thin film layer is laminated, a fluorine resin or the like can be used.

As the resin used for the heat or radiation hardening resin layer 13, a known resin can be used as long as it is a non-solvent type curable resin. Examples thereof include an acryl group, a methacryl group, an aryl group, and a vinyl group. It is preferable to use, as a seed component, a photopolymerizable oligomer having a double bond (for example, urethane acrylate resin) and a monomer (for example, tripropylene diol glycol diacrylate) alone or as a mixture. Better. Further, from the viewpoint of the design property that the pattern and the like of the decorative layer 12 can be clearly seen, it is preferable that the curable resin layer 13 is transparent. However, the curable resin layer 13 can be colored and transparent by including a coloring component. At this time, a known pigment or the like can be used as a coloring component to be used.

Further, if necessary, an ultraviolet absorber, another light stabilizer, an antioxidant, an antioxidant, an antioxidant, a leveling agent, an antistatic agent, a storage stabilizer, may be added to the curable resin layer 13 as an additive. Plasticizers, lubricants, inorganic fillers, organic fillers, UV absorption and near infrared absorption Fine particles of metal (composite) oxides such as titanium oxide, zinc oxide, and ITO having a function can also be added.

Further, the curable resin layer 13 can be composed of a plurality of layers. In this case, a plurality of layers may each contain a different coloring component. When the curable resin layer 13 is composed of a plurality of layers, and each of the plurality of layers contains a different coloring component, the design property can be further improved. Further, a metal thin film layer may be further formed on the surface of the hardening resin layer for use.

The thickness of the curable resin layer 13 is in the range of 5 to 500 m, preferably in the range of 10 to 300 m. If the thickness of the resin layer 13 is less than 5 / m, the protective effect of the decorative layer will be insufficient. On the other hand, if it exceeds 500 m, the flexibility of the decorative foil may be low, and the workability may be reduced.

The method of forming the curable resin layer 13 is not particularly limited, but examples thereof include a bar coating method, a mouth coating method, an air doctor coating method, a blade coating method, a squeeze coating method, an air knife coating method, and a reverse opening method. A step of applying the curable resin composition to a predetermined thickness on the surface of the decorative layer by a monolithic coating method, a gravure coating method, a transfer coating method, a fountain coating method, a slit die coating method, a lip die coating method, or the like. After that, a method of heating the curable resin composition or irradiating the curable resin composition with ultraviolet rays, an electron beam, radiation, or the like may be used. When using an electron beam-curable resin as the resin, the electron beam irradiator used is not particularly limited, and for example, an electron beam irradiation method such as a Van de Graff scanning method, a double scanning method, and a curtain beam method. A beam irradiation device can be used, and among these, the curtain beam method, which is relatively inexpensive and has a large electron beam irradiation output, is preferable. The required acceleration voltage is selected according to the coating film thickness. The electron beam irradiation atmosphere is in an inert gas that does not contain oxygen, ozone, or the like, such as in nitrogen.

The acceleration voltage during electron beam irradiation is preferably 100 to 50 OkV. In order to increase the transmittance of the electron beam, it is more preferable to be 25 OkV or more. The absorbed dose of the electron beam is not particularly limited as long as the desired curing can be applied to the electron beam-curable resin composition, and is not particularly limited, but is generally 0.1 to 7 Mrad. Yes, preferably 0.2 to 5 Mrad. If the absorbed dose is less than 0.1 I Mmd, The curing of the electron beam-curable resin composition due to the amount of electron beam irradiation may be insufficient. If the absorbed dose exceeds 7 Mrad, the sheet-like substrate may deteriorate or discolor, and it is a waste of energy.

The surface of the curable resin layer 13 can be covered with a protective film. The protective film is not particularly limited as long as it is a material which is easily peelable from the curable resin layer 13 and is hard to migrate with the resin constituting the curable resin layer 13. And resin films such as polyethylene terephthalate (PET), and those having a release layer coated with a release agent on the surface on the side of the hardening resin layer 13 based on these resin films. But it doesn't matter.

The release sheet 24 for printing is not particularly limited as long as the primer layer 11 can be easily peeled off. Examples thereof include paper substrates such as high-quality paper, coated paper, cast-coated paper, and art paper. , Synthetic paper, film-shaped synthetic resin sheets such as polyethylene, polypropylene, polyester, polyamide, and polyvinyl chloride; laminate paper with a polyolefin resin such as polyethylene on one side; Examples of the base layer include a base layer having a release layer formed on the release surface side of the base layer with a release agent, and a release layer having a release property adjusted by corona treatment or the like. In other words, it is only necessary that the adhesive has an appropriate adhesiveness to the primer layer and the release property can be adjusted so that the primer layer can be easily peeled off.

In order to increase the adhesion between the cured resin layer and the decorative layer, a second primer layer may be formed between the decorative layer 12 and the cured resin layer 13. The resin to be used for the second primer layer is not limited. In particular, a resin containing a radiation-curable resin composed of an acryl-based oligomer and a acryl-based resin containing 25% by weight or more is used. In this case, it is possible to provide a decorative foil / decorative sheet having excellent weather resistance, abrasion resistance, solvent resistance, and chemical resistance and a small shrinkage.

An adhesive layer may be further provided on the primer layer 11 side of the decorative foil 10 to make a decorative sheet in which a release sheet for protection is adhered to the adhesive layer. As the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer, a known pressure-sensitive adhesive can be used. For example, there is an acrylic pressure-sensitive adhesive J containing an acrylic polymer and a tackifier. The release sheet is not limited as long as the adhesive does not adhere thereto. For example, polyethylene terephthalate And paper-based sheets such as high-quality paper and kraft paper coated with a release agent such as silicone, and film-based sheets such as polyethylene and polypropylene.

When using decorative foil, apply an adhesive to the primer layer 11 of the decorative foil 10 from which the release sheet for printing has been removed, or adhere to the surface of the substrate on which the decorative foil 10 is to be attached. After the agent is applied, it is attached so as to be in close contact with the surface of the substrate, and is bonded to and integrated with the surface of the substrate via an adhesive.

This decorative foil can also be used as an unpainted film used in three-dimensional molding methods such as professional molding, insert molding, film molding, SMC molding, and PFM.

On the other hand, in the case of a decorative sheet, it is performed by peeling off the release sheet and adhering it on the base.

(Production method)

Next, a production method suitable for easily producing the decorative foil 10 of the present invention will be described in detail with reference to FIG.

As a pre-production step, it is necessary to mix a cross-linking agent with the resin constituting the primer layer 21 as described above. As a mixing method, an ordinary method can be used. The mixing ratio is preferably such that the substantial ratio of the crosslinking agent to the resin is about 0.02% to 6%. If the proportion of the crosslinking agent is too small, the metal thin film layer cannot be laminated. If the proportion of the crosslinking agent is too large, it is difficult to peel off the release sheet for printing.

In the first step of the production of the decorative foil 10 according to the present invention, as shown in FIG. 2 (a), first, a primer layer containing the above-mentioned crosslinking agent mixed on the surface of the release sheet 24 for printing was formed. Print primer to create primer layer 21.

In the second step, as shown in FIG. 2 (b), the product obtained in the first step is put on the primer layer 21 by a sputtering method in a vacuum state together with the release sheet for printing by a sputtering method. 22. A metal thin film layer as 2 is laminated. The degree of vacuum at this time is sufficient under the conditions for stacking ordinary metal thin films, so that the degree of vacuum can be about 1 O—'Pa. Lamination speed depends on the type of metal, but 0.1

About 0 mZ is desirable. If the lamination speed is too fast, the sputtered metal particles will It is not suitable because the metal is directly laminated on the release sheet for printing 24 after passing through 1. On the other hand, if the laminating speed is too slow, the operation efficiency is inferior.

Further, instead of the second step, an evaporation method can be used as the second step. As shown in Fig. 2 (b), the product obtained in the first step was put together with the release sheet for printing in a vacuum state by a vapor deposition method using a metal thin film as a decorative layer 22 on the primer layer 21. Stack the layers. The degree of vacuum at this time is sufficient under the conditions for stacking ordinary metal thin films, so that the degree of vacuum can be about 10 to ³ Pa. The laminating speed depends on the type of metal, but is preferably about 0.1 // mZ to 5 mZ. If the laminating speed is too high, the evaporated metal passes through the primer layer 21 and is directly laminated on the release sheet 24 for printing. On the other hand, if the lamination speed is too low, the operation efficiency is inferior.

In order to form the decorative layer 22 with the metal thin film layer and the printing layer, a resin containing a paint is printed on the metal thin film layer by a known printing process on the surface of the metal thin film layer. Thereby, a printing layer can be formed.

In the case where the decorative foil has a second primer layer, the resin component of the second primer layer is applied to the surface of the decorative layer 22 to form the second primer layer.

In the third step, as shown in Fig. 2 (c), the resin obtained in the second step is coated with a heat or radiation curable resin. For example, when an electron beam-curable resin is used, a solventless electron beam-curable resin paint 23 ′ for forming the curable resin layer 23 is applied from above the decorative layer 22.

In the fourth step, as shown in FIG. 2 (d), the uncured resin obtained in the third step is cured. For example, when the solvent-free electron beam-curable resin paint 23 ′ exemplified in the third step is used, it is placed in an uncured state in an electron beam irradiation apparatus and irradiated with an electron beam. Then, the non-solvent type electron beam curable resin paint 2 3 ′ is cured to form a cured resin layer 23.

When the release sheet for printing 24 is peeled off from the product obtained through the above-described manufacturing process, a decorative foil 10 is obtained. In order to make this decorative foil 10 into an adhesive decorative sheet, an adhesive is applied to the adhesive peeling sheet, and this peeling sheet is attached to the primer layer side of the decorative foil. This is performed by transfer adhesion. If left in this state at 50 ° C. for 3 days, a decorative sheet using the decorative foil of the present invention can be obtained.

The decorative foil obtained by the manufacturing method as described above is a decorative foil that is excellent in design, abrasion resistance, and workability at a work site, and is suitable for a case in which an effect of force and pawl tone is required. Therefore, it can be used not only for building components such as walls, pillars, and doors, and for signboards and signs, but also for car mirrors and pampers, car body bodies, and exterior and interior parts of vehicles and ships. Can be.

【Example】

Hereinafter, examples of the present invention will be described in detail.

(Example 1)

Acrylic resin was mixed with aromatic isocyanate (Nippon Polyurethane Co., Ltd., trade name “L-155EJ”) at a substantial ratio of 1% as a cross-linking agent. The resin component containing the cross-linking agent was solid-printed to a thickness of 4 m as a primer layer on the entire release surface of the release sheet provided with a release assisting layer on the surface of the release sheet.

Next, put this sheet in a sputtering apparatus, put it in a vacuum of 2 × 10— ^ Pa, and stack silver 1 m on this primer layer by sputtering at a stacking speed of 10 / imZ min. It was made a decorative layer. The sheet with the decorative layer laminated thereon is taken out, and a transparent solvent-free electron beam-curable resin paint (a mixture of urethane acrylate resin and tripropylene glycol diacrylate manufactured by Sanyu Paint Co., Ltd.) is placed on the decorative layer. Was applied by a gravure coating method to a thickness of 75 m. A 32 m-thick polyester embossed film (manufactured by Toyobo Co., Ltd.) with a ground glass-like irregular surface is applied as a protective film on the electron beam-curable resin paint so that the irregular surface is along the electron beam-curable resin paint. In an installed state, it is placed in an electron beam irradiator (Nisshin Electric Co., Ltd. Ten-beam method) in a nitrogen gas atmosphere, and irradiated with 4 Mrad of electron beam at an acceleration voltage of 250 kV. By forming the film, a resin layer was formed to obtain a decorative foil. Then, the printing release sheet of the decorative foil is peeled off, an acryl-based resin adhesive is applied to the exposed primer layer, and the adhesive is integrally bonded to the surface of the base material, the woody pod, via the adhesive. Then, the protective film was removed to obtain a cosmetic pod. The obtained decorative pod had a plating-like finish and a uniform silver metallic luster, as viewed from the cured resin layer.

(Example 2)

Instead of the sputtering step of Example 1, a decorative layer was formed by a vapor deposition method, and the other steps were the same. Vacuum before the start of deposition 3 X 1 0 - a ³ P a, and a laminated speed 2 m / min. Next, an acrylic pressure-sensitive adhesive (trade name “X-0589” manufactured by Big Technos Co., Ltd.) was applied to the exposed primer layer of the decorative foil to form a pressure-sensitive adhesive layer. This was adhered to a PET substrate to obtain a decorative board. The obtained cosmetic pod was finished to a plating tone and had a silver-like uniform metallic luster, to the same extent as when using the sputtering method.

(Comparative Example 1)

In the manufacturing process of Example 1, a sputtering process was performed using an acrylic resin containing no crosslinking agent as a primer layer. However, no silver stack was seen on the primer layer.

(Comparative Example 2)

In the production process of Example 2, an evaporation process was performed using an acrylic resin containing no crosslinking agent as a primer layer. However, no silver stack was seen on the primer layer. Industrial applicability

As described above, the decorative foil of the present invention has a plating-like design effect that could not be realized with the decorative foil having good workability disclosed in JP-A-2001-14883. Since the decorative foil can be used as a decorative foil, it is possible to further enhance the design, and for this reason, it can be used not only for building components such as walls, columns, doors, etc. It can be suitably used for a part of a pamper, an automobile body, an exterior and an interior of a vehicle, a ship, and the like. Furthermore, it can be used as an uncoated film of a three-dimensional molding method such as the inmold method, and by this method, it is possible to apply makeup to the body of an automobile.

Claims

The scope of the claims

1. A decorative foil having at least a decorative layer on the primer layer, and a heat- or radiation-induced stiffening resin layer formed by coating and curing to cover the surface of the decorative layer,

A decorative foil, wherein the decorative layer has a metal thin film layer.

2. The decorative foil according to claim 1, wherein the primer layer has releasability from a release surface transferred and formed by a release sheet for printing.

3. The decorative foil according to claim 1, wherein the primer layer contains a crosslinking agent.

4. The decorative foil according to claim 1, wherein, among the decorative layers, the thickness of the metal thin film layer is less than 1 O ^ m.

5. An automotive component to which the decorative foil according to claim 1 is adhered.

6. A metal thin film layer as a decorative layer is formed on the primer layer, and at least a heat- or radiation-induced dangling resin layer formed by coating and curing so as to cover the surface of the decorative layer is formed. An automobile in which an adhesive is applied to the primer layer side of the decorative foil having the decorative foil, and the decorative foil is adhered to the surface of the vehicle body as a decorative coating film.

7. An unpainted film for three-dimensional molding using the decorative foil according to claim 1.

8. At least a first step of printing on the release surface of the release sheet for printing and forming a primer layer having a releasability containing a crosslinking agent by printing, and a metal thin film on the primer layer by sputtering. A second step of forming a decorative layer as a layer, and applying heat or heat to the surface opposite to the release surface while the primer layer and the decorative layer are attached to the release sheet. A method for producing a decorative foil, comprising: a third step of applying a radiation-curable resin paint; and a fourth step of curing the applied curable resin paint to form a curable resin layer.

9. At least a first step of printing on the release surface of the release sheet for printing and forming a brimer layer having a releasability containing a cross-linking agent by printing, and forming a metal thin film layer on the primer layer by vapor deposition. A second step of forming a decorative layer, and a third step of applying a heat- or radiation-curable resin paint on the surface opposite to the release surface with the primer layer and the decorative layer attached to the release sheet. And a fourth step of curing the applied curable resin paint to form a curable resin layer.