JP2011000857A - Metallic tone decorative film, metallic tone decorative resin molding, and method of manufacturing the metallic tone decorative resin molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metallic tone decorative film and a metallic tone decorative resin molding, having satisfactory molding workability, high in a surface hardness, and excellent in metallic glossiness.SOLUTION: This metallic tone decorative film 1 includes a metal layer 3 in an inside with two sheets of films 2, 5 fixed by an adhesive 4, the surface film 2 has H or more of pencil hardness, the reverse face film 5 has a hardness within a prescribed hardness, and a hardness of the adhesive layer 4 is made to different before and after cured. The molding workability is excellent thereby to obtain the metallic tone decorative film of high surface hardness.

Description

  The present invention relates to a metallic decorative resin molded body used for decorative molded articles that are exterior members of electric products, automobiles, etc., and a metallic decorative film used for the decoration of this metallic decorative resin molded body, and these It relates to the manufacturing method.

As a decorative molded body decorated in a metallic style, a metallic decorated resin molded body having a configuration in which a metallic molded film is covered with a resin molded body is known. In many cases, the metal decorative film used in this metal decorative resin molded body is configured such that the metal vapor deposition layer is not easily damaged by sandwiching the metal vapor deposition layer between two resin films. Such examples are described in Japanese Patent Application Laid-Open Nos. 10-180795 and 2007-030249.
That is, by coating a resin molded body with such a metal-decorated film, a metal-decorated resin molded body having a metallic luster and not easily damaged is realized.

Japanese Patent Laid-Open No. 10-180795 JP 2007-030249 A

The metallic decorative film is preferably a laminated film having good moldability so that the surface can be covered in accordance with various shapes brought about by the resin molded body. On the other hand, after molding, it is required to have a certain degree of surface hardness so that the resin molded body is protected and the metallic appearance is not damaged and the appearance is not impaired.
However, when a relatively soft resin film or a metallic decorative film having an adhesive layer is used from the viewpoint of moldability, the surface is easily damaged. On the other hand, if a hard material is used for the resin film or adhesive layer so that the surface of the product is hardened, there is a disadvantage that a high-quality product cannot be obtained due to cracking or deterioration of the metallic luster during the molding process. is there.

  The present invention has been made against the background of the prior art as described above. That is, the object of the present invention is to provide a metal-like decorative film or a metal-like decorative resin molded article that does not cause cracks in the laminated film or deterioration of metallic luster even when a three-dimensionally deforming molding process is performed, and has a high surface hardness. Is to provide.

In order to achieve the above object, the present invention is configured as follows.
Regarding a metal-supporting film to which a metal layer is attached, a cover film that protects the metal layer, and a metal decoration film that has at least an adhesive layer that fixes the metal-supporting film and the cover film, either the metal-supporting film or the cover film One of the surface films has a pencil hardness of H or higher, and either the metal-supporting film or the cover film has a rear surface film having a Rockwell hardness of HRR 100 or higher, and is deformed during drawing than the surface film. It is an easy-to-use resin film, and the adhesive layer is an adhesive layer made of a curable adhesive that has a Rockwell hardness of HRR50 or higher after a predetermined curing process, while having a Rockwell hardness smaller than HRR50. The support film and the cover film are fixed and can be drawn. To provide a metallic decorative films.

  The surface film has a hardness of H or higher in pencil hardness based on JIS K5600-5-4. Since the pencil hardness is set to H or more, the surface is destroyed and hardly damaged, and a hard feeling can be given. In the present specification and claims, the pencil hardness refers to the hardness based on JIS K5600-5-4. The back film is a resin film whose hardness is HRR 100 or more based on JIS K7202-2 and is more easily deformed during drawing than the front film. Since the Rockwell hardness is set to HRR100 or more, a dent is not generated when the surface film is pressed, and a hard surface does not easily occur, and a hard surface can be obtained. In addition, since the resin film is more easily deformed at the time of drawing than the surface film, the drawing shape is easy to stabilize, and the desired three-dimensional shape is easily formed. In the present specification and claims, the term “Rockwell hardness” refers to the hardness based on this JIS K7202-2.

Furthermore, the adhesive layer is an adhesive layer having a Rockwell hardness smaller than HRR50, and having a Rockwell hardness of HRR100 or more after a predetermined curing process, and the metal support film and the cover film are easily adhered to each other. An adhesive having an adhesive strength that does not peel off is used. Since the Rockwell hardness is less than HRR50, there is no fear that the adhesive layer is broken or the metal-carrying film and the cover film are peeled off during the molding of the metallic decorative film, and the molding processability is good. In addition, since the Rockwell hardness becomes HRR100 or more after a predetermined curing treatment, a hard surface in which a phenomenon that a dent occurs on the surface and does not return to the original when the surface film is pressed can be obtained. Here, the predetermined curing treatment means that the metal decoration film is heated, pressurized, irradiated with ultraviolet rays, etc. at the time of post-processing of the metal decoration film such as integrating the metal decoration film with the resin molding. It refers to a process necessary for curing the adhesive according to the type of the adhesive used for the adhesive layer, such as an active energy ray curing process.
In addition, since the metal-carrying film and the cover film have an adhesive force that does not easily peel off, the metal-carrying film and the cover film are not peeled when the metal-like decorative film is molded, When this metallic decorative film is integrated with the resin molded body, the surface film is molded following the shape of the resin molded body, and both the surface film and the back film are deformed according to the shape of the resin molded body. It is possible to obtain a metal-decorated resin molded article having good resin film and resin integrity.
If such a metal-like decorative film cures the adhesive layer, a metal-like decorative film having an excellent hardness of H or higher in pencil hardness from the surface film side can be obtained.

  It can be set as the metal decoration film which an adhesive layer becomes with the reaction hardening type adhesive agent hardened | cured by at least 1 hardening reaction selected from a heating, pressurization, and active energy ray irradiation. Since the adhesive layer is made of a reactive curable adhesive that is reactively cured by heating, pressing, active energy ray irradiation, etc. The decorative film can be cured separately. Therefore, at the time of integral molding of the metallic decorative film with the resin molded body, or after that, the metallic decorative film can be cured to produce a metallic decorative resin molded body having a high surface hardness.

It can be set as the metal decoration film which an adhesive layer becomes with the reaction hardening type adhesive agent containing the microcapsule which encloses a hardening | curing agent. Since the adhesive layer is a metallic decorative film made of a reactive curable adhesive containing microcapsules encapsulating the curing agent, a metal capsule is applied by performing a microcapsule breaking process separately from the adhesion of the metal-carrying film and the cover film. By curing the adhesive layer of the decorative film, the metallic decorative film can be separately cured. Therefore, at the time of integral molding of the metallic decorative film with the resin molded body, or after that, the metallic decorative film can be cured to produce a metallic decorative resin molded body having a high surface hardness. Further, the microcapsule type curing agent is excellent in storage stability. In the method of compressing and destroying the capsule, the capsule can be cured at the same time as molding, so that it is not necessary to provide a new curing step separately from the molding.

  The metal layer can be a discontinuous vapor deposition layer made of indium. Since the metal layer is a discontinuous vapor deposition layer made of indium, it does not adversely affect the metallic luster even when deep-drawing a metal-like decorative film, and the metal-like visibility before forming can be maintained. . Therefore, it is excellent in metallic luster and a high quality metallic decoration film can be obtained. Moreover, it can have excellent moisture resistance.

  It can be set as the metallic decoration film whose thickness of a back film is 2 times or more of a surface film, and is 400 micrometers or less. Since the thickness of the back film is set to be twice or more that of the surface film, the back film can suppress the stress of the surface film and can easily maintain the three-dimensional shape of the metallic decorative film after temporary drawing. Further, since the thickness of the back film is set to 400 μm or less, the moldability is good and fine uneven processing can be easily performed.

  The back film of the said metallic decoration film can be set as the metallic decoration resin molding which adheres to the surface of a resin molding, and decorates. Because the backside film of the above-mentioned metallic decorative film is a metallic decorative resin molded body that is fixed on the surface of the resin molded body and decorated, it is easy to mold, has a metallic luster, and has a high surface hardness. It can be set as the metal tone decoration resin molding which has a film.

Moreover, about the manufacturing method of the metallic tone decoration resin molding which the back surface film of the said metallic tone decoration film adheres to the surface of a resin molding, and decorates this metallic tone decoration film, the surface shape of a resin molding body After temporarily drawing to a three-dimensional shape along the line, the temporarily decorated metal-like decorative film and the resin molded body are integrated, and the adhesive layer of the metal-like decorative film is cured to lock this adhesive layer. Provided is a method for producing a metal-decorated resin molded article characterized by curing to HRR 100 or more with well hardness.
The adhesive layer of the metallic decorative film is cured, and this adhesive layer is hardened to an HRR of 100 or more with Rockwell hardness. Therefore, the metallic decorative resin molded body having a high surface hardness without deteriorating the molding processability. It can be.

Furthermore, about the manufacturing method of the metal tone decoration resin molding which the back surface film of the said metal tone decoration film adheres to the surface of a resin molding, and decorates, this metal tone decoration film is resin-molded with flat form The metallic decorative resin molded product is characterized by being cured with the adhesion layer of the metallic decorative film and being cured to a Rockwell hardness of HRR 100 or higher while being integrated with the body. Provide a method.
The adhesive layer of the metallic decorative film is cured, and this adhesive layer is hardened to an HRR of 100 or more with Rockwell hardness. Therefore, the metallic decorative resin molded body having a high surface hardness without deteriorating the molding processability. It can be.

  Deep drawing with a drawing ratio of 0.1 to 0.5 can be applied to the metallic decorative film. Even if deep drawing with a drawing ratio of 0.1 to 0.5 is applied to the metal decorative film, the resin film, adhesive layer, and metal layer of the metal decorative film are not cracked, It is possible to obtain a high-quality metal-decorated resin molding in which the metal-decorating film follows the surface shape and adheres precisely.

According to the metal-tone decorative film of the present invention, even if a molding process is performed to deform into a three-dimensional shape, each layer of the metal-tone decorative film does not crack and does not undergo modification such as whitening, and has excellent metallic luster. A surface hardness of H or higher in pencil hardness can be realized.
In addition, according to the metal-decorated resin molded body of the present invention and the method for producing the same, the metal-decorated resin having high surface hardness and excellent molding processability and metallic luster utilizing the properties of such a metal-decorated film. It can be set as a molded body.

Sectional drawing which shows the metallic decoration film of this invention. Sectional drawing which shows the state in which the metal layer adhered to the metal carrying film in the manufacture process of the metallic decoration film of this invention. Sectional drawing which shows the state which laminates | stacks a metal support film and a cover film in the manufacture process of the metallic tone decoration film of this invention. Sectional drawing of the metal tone decoration resin molding of this invention. Explanatory drawing which pressure-forms a metal tone decoration film in the manufacture process of the metal tone decoration resin molding of this invention. Explanatory drawing which cut | disconnects the excess part of a metal tone decorating film in the manufacture process of the metal tone decorating resin molding of this invention. Explanatory drawing which shows the state which inserted the metal tone decoration film in the metal mold | die in the manufacture process of the metal tone decoration resin molding of this invention. Explanatory drawing which demolds after a metal-molding decoration film and a resin molding are integrally formed in the manufacture process of the metal-tone decoration resin molding of this invention. Explanatory drawing which heat-processes a metal tone decoration resin molding in the manufacture process of the metal tone decoration resin molding of this invention. Explanatory drawing which inject | pours molten resin in another manufacturing process of the metal tone decoration resin molding of this invention. Explanatory drawing which irradiates with an ultraviolet-ray in another manufacture process of the metallic tone decoration resin molding of this invention. Sectional drawing of another metal tone decoration resin molding of this invention. Explanatory drawing which attaches a metal tone decoration film to a metal mold | die in another manufacturing process of the metal tone decoration resin molding of this invention. Explanatory drawing which demolds a metal tone decoration resin molding in another manufacturing process of the metal tone decoration resin molding of this invention. Explanatory drawing which cut | disconnects an excess part in another manufacturing process of the metal tone decoration resin molding of this invention.

  Embodiments of the present invention will be described with reference to the drawings. In addition, about the structure which is common in each embodiment, the same code | symbol is attached | subjected and duplication description is abbreviate | omitted.

1st Embodiment [FIGS. 1-3]; Metal-tone decoration film :
The present invention was created for a metal-supporting film having a metal layer attached thereto, a cover film for protecting the metal layer, and a metal decorative film having at least an adhesive layer for fixing the metal-supporting film and the cover film. .
Therefore, when the metallic decorative film is divided into each layer, a metal supporting film for attaching the metal layer, a metal layer, a cover film for protecting the metal layer, and an adhesive layer for fixing these films are provided.
The metal layer is necessary for decorating the metal tone, the metal-supporting film is necessary as a base material for providing the metal layer, the cover film is necessary for covering the metal layer, and the adhesive layer This is because it is necessary for bonding the metal-carrying film and the cover film.
As other components, a colored layer for complementing the color of the metal layer, an underlayer for laminating the metal layer on the metal-carrying film, an overcoat layer for further protecting any film surface, etc. Various layers may be provided.

  Such a metallic decorative film is used by being fixed to the surface of the resin molded body in order to give the resin molded body a metallic decoration. Therefore, at the time of integration into the resin molded body, a thin planar film is three-dimensionally molded according to the shape of the resin molded body. Therefore, it is necessary to provide preferable moldability. In order to have a preferable formability, whitening does not occur in a portion that is partially stretched when the metal decorative film is drawn, or a springback phenomenon occurs that attempts to return to the original shape after forming. In addition, it is necessary that the film is difficult to break when the film is cut into a product shape.

  Further, when the metallic decorative film is fixed to the resin molded body, one surface thereof is exposed to the outside, and the other surface is fixed to the resin molded body. Therefore, the film positioned on the side exposed to the outside is described as a front film, and the film positioned on the side fixed to the resin molded body is described as a back film.

Then, depending on the form used when the metallic decorative film is fixed to the surface of the resin molded body, either the metal carrying film or the cover film on the side that appears on the surface even after being fixed to the resin molded body is used. The surface film is used, and the other of the metal-carrying film and the cover film on the side to be fixed to the resin molded body is called a back film.
Even if another layer is provided on the surface of the metal-carrying film or the cover film, or when another film is laminated, either the metal-carrying film or the cover film may be used as the surface film. One of the metal carrying film and the cover film is referred to as a front film, and the other is referred to as a back film.

The hardness of the metallic decorative film can be evaluated according to the pencil hardness based on JIS K5600-5-4. The state of the surface is observed when the pencil with the cylindrical core exposed as it is is tilted 45 degrees and moved horizontally with a load of 750 g.
For metallic decorative films, there are cases where the surface is destroyed and scratched, and the surface is dented and cannot be restored. As a result of various studies, these phenomena are specific to the surface film material. It was found that not only the hardness but also other layers may be affected. In other words, the phenomenon that the surface is destroyed and scratched can be considered to be due to the inherent hardness of the material of the surface film. It was found that the lower the thickness, the more affected the adhesive layer in the lower layer and the hardness and thickness of the back film.

  A cross-sectional view of the metallic decorative film 1 is shown in FIG. The manufacturing process is shown in FIGS. In this example, the metallic decorative film 1 has a surface film 2, a metal layer 3, an adhesive layer 4, and a back film 5 laminated in this order, the metal-supporting film is the surface film 2, and the cover film is the back film 5. It is said.

Surface film 2: The surface film 2 is formed of a transparent resin film so that the inner metal layer 3 can permeate and be visible from the outside. Moreover, it is preferable that the surface is made of a hard resin film so that the surface is hardly damaged and a metallic texture is imparted. Therefore, the pencil hardness of the surface film 2 is H or higher. Since it is set to H or more, the surface is destroyed and hardly damaged, and a hard feeling can be given. When the pencil hardness is softer than H, the surface of the surface film 2 is easily scratched and easily dented.
The thickness of the surface film 2 is preferably 10 μm to 150 μm. When the thickness is less than 10 μm, even if the lower adhesive layer is an HRR100 or higher adhesive layer, the surface hardness may be affected by the influence. On the other hand, when it exceeds 150 μm, the moldability may be deteriorated.
Examples of the material of the surface film 2 include polyester resins, acrylic resins, polyamide resins, and polycarbonate resins having the above characteristics. In addition, even if the pencil hardness of the material of the resin film is less than H, a surface film having a pencil hardness of H or more can be obtained by providing a hard coat layer with a pencil hardness of H or more on the surface or by modifying the resin. 2 is possible. For example, a polycarbonate resin generally has a pencil hardness of less than H. However, by providing a hard coat layer on the resin, or by modifying the resin, the surface film 2 having a pencil hardness of H or more. Can be obtained.
Furthermore, it is preferable from the viewpoint of moldability that the surface film 2 is a non-crystalline or low-crystalline thermoplastic resin film.

Metal layer 3: The metal layer 3 is a layer provided for performing a metallic decoration, and can be formed by a vacuum deposition method, a sputtering method, an ion plating method, plating, or the like. As the kind of metal used, indium, tin, silver, zinc, lead, bismuth, aluminum, nickel, gold, platinum, chromium, iron, copper, titanium, germanium, and other metals, and alloys thereof can be used. Among these, when deep drawing is performed, the discontinuous vapor deposition layer 3 formed by vapor deposition or sputtering is preferable. If a discontinuous vapor deposition layer is used, the visibility of the metal layer does not change even when deep drawing is performed, and a high-quality metallic luster can be maintained before and after the forming process.
Here, the discontinuous vapor deposition layer means that when the vapor deposition film is observed with an electron microscope, countless small metal particles are scattered on the surface of the film and do not appear to be uniform as a whole. A layer that appears to have cracks on the surface of the deposited film. Examples of the metal that can be formed as the discontinuous metal layer include indium, tin, zinc, lead, bismuth, and alloys containing these metals. In addition, the average particle size of the island-shaped portion is preferably about 100 nm to 300 nm.
The thickness of the metal layer is preferably 20 nm to 100 nm. If it is thinner than 20 nm, sufficient metallic luster that cannot be said to be a metallic tone cannot be obtained, and a blackish color may be exhibited. When the thickness exceeds 100 nm, a continuous layer starts to be formed, and when the metal-like decorative film is deep-drawn, microcracks are generated in the metal layer, which may cause a cloudy metallic luster.
Note that the deep drawing means that the degree of drawing for a predetermined molding portion is high. For example, the ratio of the drawing height to the aperture when the forming part is converted into a circle is the drawing ratio, and the value is 0.1 or more. It means that. For example, if the key top for a pushbutton switch having a convex cross section has a circular top surface with a diameter of 8 mm and a height of 2 mm, the aperture ratio is 0.25.

  In order to increase the adhesion between the metal layer 3 and the surface film 2, a base coat layer can be provided between the two as necessary. This base coat layer is made of acrylic resin, urethane resin, polyester resin, epoxy resin, alkyd resin, ether resin, nitrified cotton (nitrocellulose) resin, and various types such as evaporative drying type, UV curable type, heat curable type, etc. Can be selected and used. Especially, the acrylic resin and urethane resin which can follow a deformation | transformation of a metal decoration film and can make Rockwell hardness HRR100 or more are preferable.

Back film 5: The back film 5 is provided as a layer necessary for fixing the metallic decorative film 1 to the resin molded body. Further, since the back film 5 is a film having a relatively hard surface film 2 and a poor moldability, a resin film having a property that compensates for the poor moldability and hardly causes a return deformation is used.
As an index of the properties of such a resin film, there is a small return stress (residual stress). This is because if the return stress is large, the drawn shape of the metallic decorative film 1 becomes unstable even if it is deformed. From such a viewpoint, it is desirable to use a low crystalline resin having a lower return stress than the front film 2 or an amorphous resin for the back film 5.
On the other hand, since the hardness of the back film 5 also affects the product hardness, the Rockwell hardness is required to be HRR 100 or more. If the Rockwell hardness is not HRR100 or more, even if a surface film having a sufficiently high hardness is used, a dent may be generated on the surface and the original state may not be restored. Because.

The thickness of the back film 5 can be set to 10 μm to 500 μm from the viewpoint of moldability, but is preferably twice or more the thickness of the surface film 2 and 400 μm or less. The reason why the thickness of the surface film is set to be twice or more is that the poor formability of the surface film 2 can be compensated and the shape after the deep drawing can be easily maintained. In addition, the thickness of the back film 5 is set to 400 μm or less. When the thickness exceeds 400 μm, the molding processability is deteriorated, and the thickness of the entire metallic decorative film 1 is increased, so that it is difficult to perform fine uneven processing. Because it becomes.
Examples of the material of the back film 5 include polyester resin, acrylic resin, polyamide resin, polycarbonate resin, acrylonitrile butadiene styrene resin, polyvinyl chloride resin, polystyrene resin, APET resin, ABS resin, and alloy resins and modified resins containing these. Etc.
Furthermore, it is preferable to use a non-crystalline resin film as the back film 5 from the viewpoint of moldability.

Adhesive layer 4: The adhesive layer 4 is for fixing the metal-carrying film and the cover film. More specifically, the adhesive layer 4 is a layer for fixing the metal layer 3 and the cover film. That is, it is necessary to form with the adhesive which has the adhesivity of the metal layer 3 and a cover film. Moreover, since the metallic decorative film 1 is integrally processed with the resin molded body later, it is required to have enough flexibility to withstand even when drawn into a three-dimensional shape. Furthermore, when it becomes a metallic decorative resin molded body, since the surface hardness is calculated | required, it is also requested | required to provide a certain amount of hardness.
Therefore, first, it is necessary that the hardness of the adhesive layer after fixing the metal-supporting film (here, the front film 2) and the cover film (here, the back film 5) is Rockwell hardness smaller than HRR50. . If the HRR is 50 or more, there is a risk that the adhesive layer 4 may crack during temporary drawing or molding when integrating with a resin molded body, or the metal-carrying film and the cover film may be peeled off, resulting in poor molding processability. This is because there is a risk that a defective product may be manufactured without sufficient molding.

Further, the adhesive layer 4 is required to have an adhesive force that does not easily peel off the metal-carrying film and the cover film so that it can be handled as the metallic decorative film 1. Therefore, the peel strength when a peel test between the front film 2 and the back film 5 is performed is preferably 0.016 kN / m or more. If it is less than 0.016 kN / m, the surface film 2 and the back film 5 may be peeled off during the handling of the metallic decorative film 1, and the surface film 2 does not follow the shape of the resin molded body during the molding process. This is because there is a possibility of an irregular shape. Here, the peel strength is a value measured by a T-type peeling test based on JIS K6854-3.
Furthermore, it is necessary that the Rockwell hardness after a predetermined curing process is HRR 100 or more. This is because if the hardness of the surface film 2 is not HRR100 or higher, a dent may be generated on the surface and the irreversible phenomenon may occur regardless of how hard the surface film 2 is. That is, if it is not HRR100 or more, the surface hardness at the time of becoming a metallic tone decorative resin molded product is insufficient, and a decorative molded product with sufficient durability cannot be provided.

Examples of the adhesive used for the adhesive layer 4 include the following. Hereinafter, although it divides and divides into types, in any type, at the time of manufacture of metal tone decoration film 1, ie, when metal tone decoration film 1 was obtained by adhering a metal carrying film and a cover film. The properties (second stage) and the properties when the metal-curing decorative film 1 is further subjected to a post-treatment to cause a predetermined curing reaction (second), such as when integrated with the resin molded body, or after that. Stage).
(1) One type type adhesive;
First, as a first type, it consists of one kind of adhesive, and in the first stage, it has adhesiveness or adhesiveness to fix the metal-carrying film and the cover film without causing a curing reaction. Examples include adhesives that cure by reaction.
In addition, even if it is a two-component reaction type adhesive, if it becomes an adhesive with two components, it is one type of adhesive with two components, and multiple different reactions are combined to cause curing to occur in conjunction with each other. Even if it can be viewed as a single reaction that summarizes such a series of reactions, it can be said that it is a kind of adhesive including all the raw materials that cause such reactions.
(2) Fixing type + curing type → adhesive;
Next, as the second type, there are at least two types of adhesives, and in the first stage, the first adhesives that are sticky or solidify in an unreacted state such as volatilization of solvent and have adhesiveness contribute. In the second stage, there is a type of adhesive in which a plurality of adhesives are mixed such that the second adhesive that cures by a predetermined curing reaction contributes to cure the entire adhesive. .
With one type of reactive curable adhesive, when there is no adhesive force between the metal-carrying film and the cover film in the state before curing, there may be a case where a normal adhesive is used together. An adhesive obtained by mixing an ordinary pressure-sensitive adhesive or a solvent volatile adhesive with a reaction curable adhesive is exemplified.
(3) Curing type + Curing type → Adhesive;
Next, as a third type, it is composed of at least two types of adhesives, and a predetermined curing reaction is caused in the first stage and the first adhesive having adhesiveness contributes to fix the metal-carrying film and the cover film. In the second stage, there is a type of adhesive in which a plurality of adhesives are mixed such that the second adhesive that cures by a different curing reaction from the first stage contributes to cure the entire adhesive layer. .
Examples of these types of adhesives include adhesives in which two types of adhesives having different curing reactions are mixed, such as an adhesive in which a thermosetting adhesive and an ultraviolet curable adhesive are mixed, and conditions for the curing reaction. The adhesive which mixed two types of adhesives from which this differs is mentioned. About the latter, the adhesive which mixed the thermosetting adhesive hardened | cured at a certain temperature and the thermosetting adhesive hardened | cured above that temperature is mentioned.

The first type of adhesive is sticky or has adhesive properties with the film until the solvent evaporates when applied diluted in a solvent, two-component curable, thermosetting, UV curable Reactive curable type consisting of urethane resin, melamine resin, polyester resin, epoxy resin, vinyl resin, acrylic resin, amide resin, etc. An adhesive is mentioned.
As the second type of adhesive, the first adhesive is polyurethane, polyester, polyethylene, polyamide, polyvinyl chloride, styrene-butadiene rubber, acrylic, styrene, cellulose, alkyd , Polyvinyl acetate, ethylene vinyl acetate copolymer, polyvinyl alcohol, epoxy, silicone, natural rubber, synthetic rubber and other adhesives, rubber, thermoplastic elastomers, solvent volatile adhesives, etc. Examples of the second adhesive include urethane resin, melamine resin, polyester resin, which are cured by various curing reactions such as two-component curing type, thermosetting type, and active energy ray curing type such as ultraviolet curing type, Reaction curing adhesives such as epoxy resins, vinyl resins, acrylic resins, amide resins, etc. In these first adhesive and adhesive mixed with a second adhesive.
As the third type of adhesive, as the first adhesive, urethane resin that cures by various curing reactions such as two-component curing type, thermal curing type, ultraviolet curing type and the like, melamine type Resin, polyester resin, epoxy resin, vinyl resin, acrylic resin, amide resin, and other reactive curable adhesives are cured as a second adhesive by a reaction different from these first adhesives. Urethane resin, melamine resin, polyester resin, epoxy resin, vinyl resin, acrylic resin that cures by various curing reactions such as two-component curing type, thermosetting type, active energy ray curing type such as ultraviolet curing type Since reaction curable adhesives such as resins and amide resins are listed, an adhesive obtained by mixing the first adhesive and the second adhesive can be used.
Moreover, the adhesive agent which mixed two types of adhesive agents from which hardening temperature differs is mentioned.
The thickness of the adhesive layer 4 is about 10 μm to 100 μm. This is because if it is thinner than 10 μm, the adhesive force is often insufficient, and if it exceeds 100 μm, the molding processability is deteriorated.

A method for producing the metallic decorative film 1 will be described.
First, as shown in FIG. 2, here, the metal layer 3 is formed on one side of the metal-supporting film to be the surface film 2 by a vacuum deposition method, a sputtering method, or the like. Next, an adhesive that becomes the adhesive layer 4 is applied to one side of the cover film that becomes the back film 5. Finally, as shown in FIG. 3, the metal layer 3 and the adhesive layer 4 are opposed to each other, and the front film 2 and the back film 5 are fixed to obtain the metallic decorative film 1.
In this step, it is necessary to add the following treatment depending on the type of adhesive used. That is, in the third type adhesive, it is necessary to perform a solidification reaction according to the material of the adhesive when the front film 2 and the back film 5 are fixed. Or need to be fixed by UV irradiation.

According to the metallic decorative film 1, since the predetermined adhesive layer 4 is provided, even if the adhesive layer 4 is deformed into a three-dimensional shape, the adhesive layer 4 is hardly cracked, and the metallic luster of the metal layer 3 is hardly deteriorated.
And the metallic decoration film 1 can be integrated with the resin molding 12, the adhesive layer 4 can be hardened, and the surface hardness of the metallic decoration film 1 can be made high. Therefore, the metallic decorative film 1 having excellent metallic luster and high surface hardness can be realized.

2nd Embodiment [FIGS. 4-15]; Metal-tone decoration resin molding :
The metal tone decoration resin molding 11 provided with the metal tone decoration film 1 is demonstrated.
FIG. 4 shows a cross-sectional view of the metallic decorative resin molded body 11.
The metallic decorative resin molded body 11 includes a metallic decorative film 1 and a resin molded body 12. That is, the back film 5 of the metallic decorative film 1 is fixed to the surface of the resin molded body 12, and the resin molded body 12 is decorated with the metallic decorative film 1.

The resin molded body 12 is a portion that becomes a base of the metallic decorative resin molded body 11, and has a truncated cone shape in this embodiment.
A thermoplastic resin or a reaction curable resin can be used for the resin molded body 12. Examples of such resins include polycarbonate resin, acrylic resin, polyurethane resin, polystyrene resin, ethylene vinyl acetate resin, polyvinyl chloride resin, polyester resin, polyamide resin, acrylonitrile butadiene styrene resin, polyacetal resin, polyphenylene oxide resin, polyphenylene ether resin. , Polyphenylene sulfide resin, polyether ether ketone resin, epoxy resin, silicone resin and the like.
When it is difficult to fix the resin molded body 12 and the metallic decorative film 1, both can be fixed with an adhesive. However, if the resin molded body 12 is made of the same material as the back film 5 or the resin molded body 12 is adhesive, the metallic decorative film 1 and the resin molded body 12 can be used without using an adhesive. It is also possible to perform integral molding with.

A method for manufacturing the metallic decorative resin molded body 11 will be described with reference to some examples.
Manufacturing method (1); [FIGS. 5 to 9] :
First, a step of temporarily drawing the large sheet-like metallic decorative film 1 by a pressure forming method using the compression box 13 is executed.
First, the sheet-like metallic decorative film 1 is heated and softened with a heater or the like. Next, as shown in FIG. 5, the heat-softened metallic decorative film 1 and the male mold 14 are set inside the compression box 13, and compressed air is poured in the direction indicated by the arrow from the inlet 13 a of the compression box 13. The back film 5 of the metallic decorative film 1 is brought into close contact with the male mold 14. The male mold 14 has a head portion 14 a having substantially the same shape as the outer shape of the resin molded body 12. Thereafter, the metallic decorative film 1 is cooled and taken out from the compression box 13. In this way, the metallic decorative film 1 is temporarily drawn into a three-dimensional shape corresponding to the resin molded body 12. In addition, although such a pressure forming method is used, a press forming method and a vacuum forming method can also be used.
Then, as shown in FIG. 6, the excess part of the metallic decoration film 1 is cut | disconnected using the cutting tool 15. FIG.

Next, an integral molding step of the metallic decorative film 1 that has been deformed by drawing and the resin molded body 12 is executed.
As shown in FIG. 7, the three-dimensional metallic decoration film 1 is inserted into a cavity 16 a provided in the moving mold 16. Then, the molding die 16 is moved to the stationary-side molding die 17. After the molding dies 16 and 17 are closed, molten resin is poured from the injection port 17a of the molding die 17 to mold the resin molded body 12, and the metallic decorative film 1 and the resin molded body 12 are integrally molded. . Thereafter, as shown in FIG. 8, the molding die 16 is moved to open the molding dies 16 and 17, and the integrally molded product of the metallic decorative film 1 and the resin molded body 12 is removed.
In the present embodiment, the resin molded body 12 is formed by such an injection molding method, but the resin molded body 12 can also be formed by a compression molding method.

Finally, the final curing step of the metallic decorative film 1 is executed. Here, the case where the 1st type adhesive agent containing a thermosetting type adhesive agent is used for the contact bonding layer 4 of the metallic decoration film 1 is demonstrated.
As shown in FIG. 9, an integrally molded product of the metallic decorative film 1 and the resin molded body 12 is set in the recess 18 a of the curing mold 18, and the curing molds 18 and 19 are closed. Then, the curing molds 18 and 19 are heated to a specific temperature or higher, and the adhesive layer 4 of the metallic decorative film 1 is finally cured. Thereafter, the curing molds 18 and 19 are opened, and the metallic decorative resin molded body 11 is demolded. In this way, a metallic decorative resin molded body 11 is obtained.
In the present embodiment, the final curing step is performed after the integral molding step of the metallic decorative film 1 and the resin molded body 12, but the molten resin is transformed into the metallic decorative film during the integral molding step. When 1 can be heated above a specific temperature, the integral molding step and the final curing step can be performed simultaneously. In the final curing step, heat treatment can also be performed in a high temperature tank or the like without using a curing mold.

  In addition, when using the 1st type adhesive agent containing a ultraviolet curing adhesive for the adhesive layer 4 of the metallic decoration film 1, instead of the above-mentioned thermosetting process shown in FIG. Perform UV curing.

  According to such a manufacturing method, when the metallic decorative film 1 is three-dimensionally deformed, the adhesive layer 4 is hardly cracked, and the metallic luster of the metal layer 3 can be maintained. And surface hardness can be made high.

Manufacturing method (2); [FIG. 10, FIG. 11] :
If an ultraviolet curable resin is used for the resin molded body 12 instead of such a manufacturing method, the metallic decorative resin molded body 21 can be obtained by the following method.
First, similarly to the above-described manufacturing method, the steps shown in FIGS. 5 to 6 are executed to temporarily squeeze the metallic decorative film 1. Next, as shown in FIG. 10, the three-dimensional metallic decoration film 1 is set in the recess 22 a of the molding jig 22 for molding the resin molded body 12. And the liquid resin which is an ultraviolet curable adhesive agent is inject | poured in the solid metal decoration film 1 using the dispenser 23. FIG. As shown in FIG. 11, the liquid resin and the metallic decorative film 1 are irradiated with ultraviolet rays using an ultraviolet lamp 24 to form the resin molded body 12, and the metallic decorative film 1 and the resin molded body 12 are integrally molded. The final curing of the metallic decorative film 1 is performed simultaneously. Thereafter, the metallic decorative resin molded body 21 is taken out from the molding jig 22. Thus, the metallic decorative resin molded body 21 in which the adhesive layer 4 has already been cured can be obtained.

  In addition, when the adhesive layer 4 contains another reaction hardening type adhesive agent, it replaces with the above-mentioned thermosetting process and ultraviolet irradiation process, and performs the process which performs the hardening reaction according to the kind of adhesive agent.

  According to such a manufacturing method, when the metallic decorative film 1 is three-dimensionally deformed, the adhesive layer 4 is hardly cracked, and the metallic luster of the metal layer 3 can be maintained. And surface hardness can be made high.

Manufacturing method (3); [FIGS. 12 to 15] :
A method for manufacturing the metallic decorative resin molded body 31 shown in FIG. 12 will be described.
The resin molded body 12 is formed in a truncated cone shape, and has a structure in which an annular flange 32a protruding outward is provided at the lower end, and the back film 5 of the metallic decorative film 1 is the flange 32a. It adheres to the surface of the resin molded body 12 containing.

In the manufacturing method shown here, the integral molding process of the metallic decorative film 1 and the resin molded body 12 and the final curing process of the metallic decorative film 1 are performed simultaneously.
First, as shown in FIG. 13, the moving-side molding die 33 for molding the resin molded body 12 is moved to the fixed-side molding die 34, and the surface-like metal-like decorative film 1 is formed into a large sheet. The molding dies 33 and 34 are closed by being sandwiched so as to face the molding dies 33. Then, the molten resin is poured from the injection port 34 a of the molding die 34, and the resin-molded body 12 is deformed while deforming the metallic decorative film 1 along the cavity surface 33 a of the molding die 33 by the heat and pressure of the molten resin. The metallic decorative film 1 and the resin molded body 12 are integrally formed.
The adhesive layer 4 of the metallic decorative film 1 includes a curing agent in the microcapsule, and includes a microencapsulated curing agent that initiates a curing reaction when the microcapsule is broken. Therefore, the microcapsule is broken under the pressure of the molten resin, and the curing agent of the metallic decorative film 1 is finally cured. Thereafter, as shown in FIG. 14, the molding die 33 is opened, and the integrally molded product of the metallic decorative film 1 and the resin molded body 12 is removed.
A compression molding method can be used instead of the injection molding method.
Finally, as shown in FIG. 15, an excess portion of the metallic decorative film 1 is cut from an integrally molded product of the metallic decorative film 1 and the resin molded body 12 using the punching blade 35. In this way, a metallic decorative resin molded body 31 is obtained.

  According to such a manufacturing method, when the metallic decorative film 1 is three-dimensionally deformed, the adhesive layer 4 is hardly cracked, and the metallic luster of the metal layer 3 can be maintained. And surface hardness can be made high.

The metal-decorated resin molded bodies 11 and 21 having no flanges are manufactured by the manufacturing methods (1) and (2), and the metal-decorated resin molded body 31 having the flanges 32a is manufactured by the manufacturing method (3). Although the example to manufacture was shown, respectively, the shape of a metallic decoration resin molding is arbitrary, For example, the metallic decoration resin molding 31 can be manufactured with the said manufacturing method (1), (2). And the metal decoration resin molded bodies 11 and 21 can also be manufactured with the said manufacturing method (3).
Thus, each process shown with each manufacturing method can also be changed and added suitably for each manufacturing method.

  Next, the present invention will be described in more detail based on experimental examples.

Experimental Example 1 : Production of a metallic decorative film (1) :
As shown in Examples 1-1 to 1-8, a metallic decorative film (1) was manufactured using the following materials.
The surface film (2) has a pencil hardness of 2H and a transparent polyethylene terephthalate resin film with a thickness of 75 μm. The metal layer (3) has a discontinuous vapor deposition layer made of indium with a thickness of 50 nm to 60 nm. In (5), a transparent polycarbonate resin film having a Rockwell hardness of HRR123 and a thickness of 200 μm was used. Moreover, different adhesives were used for the adhesives constituting the adhesive layer (4) for each of the following examples.

Example 1-1 :
First, a metal layer (3) was formed on one surface of the surface film (2) by vacuum deposition. Next, on one side of the back film (5), a urethane-based thermosetting adhesive containing a blocked isocyanate curing agent that starts a reaction at 120 ° C. or higher and having a tackiness is applied and formed to a thickness of 15 μm. (4) was obtained. Then, the metal layer (3) and the adhesive layer (4) are made to face each other, the front film (2) and the back film (5) are laminated at 100 ° C. or less, and the blocked isocyanate curing agent does not undergo a curing reaction, and the adhesive layer The metal layer (3) and the back film (5) were fixed with the adhesiveness of (4). Thus, a metallic decorative film (1) was obtained as Sample 1. In addition, according to the peel test between the front film (2) and the back film (5), the peel strength was 0.016 kN / m or more. In addition, the Rockwell hardness before curing of a film obtained by separately applying a urethane-based thermosetting adhesive similar to that for the adhesive layer (4) to a thickness of 15 μm is less than HRR50 and is cured at 120 ° C. or higher. After that, the Rockwell hardness was HRR100 or more.

Example 1-2 :
Instead of the adhesive used as the adhesive layer (4) used in Example 1-1, a urethane having a microcapsulation curing agent in which an isocyanate that reacts at room temperature is encapsulated in a microcapsule that dissolves at 120 ° C. or higher, and has adhesiveness A system thermosetting adhesive was used.
Otherwise in the same manner as in Example 1-1, a metal decorative film (1) as Sample 2 was obtained.
Sample 2 had a peel strength of 0.016 kN / m or more according to a peel test between the front film (2) and the back film (5). Moreover, the Rockwell hardness before hardening of the film obtained by separately applying and forming this adhesive was less than HRR50, and the Rockwell hardness after hardening at 120 ° C. or more was HRR100 or more.

Example 1-3 :
Instead of the adhesive used as the adhesive layer (4) used in Example 1-1, a urethane-based thermosetting having a microcapsulation curing agent in which an isocyanate that reacts at room temperature is encapsulated in a microcapsule that is broken by pressure, and having tackiness A mold adhesive was used.
Otherwise in the same manner as in Example 1-1, a metal decorative film (1) as Sample 3 was obtained.
Sample 3 had a peel strength of 0.016 kN / m or more according to a peel test between the front film (2) and the back film (5). Moreover, the Rockwell hardness before hardening of the film obtained by separately applying and forming this adhesive was less than HRR50, and the Rockwell hardness after hardening by applying pressure was HRR100 or more.

Example 1-4 :
Instead of coating and forming the adhesive used as the adhesive layer (4) used in Example 1-1 as it is, the same as in Example 1-1 except that the adhesive layer (4) was formed by dissolving in a solvent and coating. Thus, a metallic decorative film (1) as sample 4 was obtained. The peel strength of the film of Sample 4 and the Rockwell hardness of the adhesive layer (4) were the same as those of Sample 1.

Example 1-5 :
Instead of the adhesive used as the adhesive layer (4) used in Example 1-1, a urethane-based ultraviolet curable adhesive containing an ultraviolet curing agent that initiates a curing reaction with ultraviolet rays was used and dissolved and dissolved in a solvent. At the time of lamination, the metal layer (3) and the back film (5) were fixed with the adhesiveness developed by heating and softening the adhesive. Otherwise in the same manner as in Example 1-1, a metal decorative film (1) as Sample 5 was obtained.
Sample 5 had a peel strength of 0.016 kN / m or more according to a peel test between the front film (2) and the back film (5). Moreover, the Rockwell hardness before hardening of the film obtained by separately applying and forming this adhesive was less than HRR50, and the Rockwell hardness after being cured by irradiation with ultraviolet rays was HRR100 or more.

Example 1-6 :
Instead of the adhesive used as the adhesive layer (4) used in Example 1-1, a urethane-based thermosetting adhesive comprising an isocyanate curing agent that reacts at room temperature and a blocked isocyanate curing agent that initiates a curing reaction at 120 ° C. or higher. The agent was used. Note that, unlike the urethane thermosetting adhesive used in Example 1-1, this urethane thermosetting adhesive is an adhesive having almost no adhesiveness to the metal layer (3) before curing.
During the lamination, an isocyanate curing agent that reacts at room temperature reacted and was cured, and the metal layer (3) and the back film (5) were fixed. Otherwise in the same manner as in Example 1-1, a metal decorative film (1) as Sample 6 was obtained.
Sample 6 had a peel strength of 0.016 kN / m or more according to a peel test between the front film (2) and the back film (5). Moreover, the Rockwell hardness before hardening of the film obtained by separately applying and forming this adhesive was less than HRR50, and the Rockwell hardness after hardening at 120 ° C. or more was HRR100 or more.

Example 1-7 :
Instead of the adhesive used as the adhesive layer (4) used in Example 1-1, an ultraviolet curing agent that initiates a curing reaction with ultraviolet rays and a blocked isocyanate curing agent that initiates a reaction at 120 ° C. or higher, A urethane-based curable adhesive having an acryloyl group in the part was used. Lamination was performed while irradiating with ultraviolet rays. This adhesive was cured by an ultraviolet curing agent to fix the metal layer (3) and the back film (5). Otherwise in the same manner as in Example 1-1, a metal decorative film (1) as Sample 7 was obtained.
Sample 7 had a peel strength of 0.016 kN / m or more according to a peel test between the front film (2) and the back film (5). Moreover, the Rockwell hardness before thermosetting of the film obtained by separately applying and forming this adhesive was less than HRR50, and the Rockwell hardness after curing at 120 ° C. or higher was HRR100 or higher.

Example 1-8 :
Instead of the adhesive used as the adhesive layer (4) used in Example 1-1, an ultraviolet curable type comprising an isocyanate curing agent that reacts at room temperature and an ultraviolet curing agent that initiates a curing reaction with ultraviolet light, and having a hydroxyl group. An adhesive was used. During the lamination, the metal layer (3) and the back film (5) were fixed by the curing reaction of the isocyanate curing agent. Otherwise in the same manner as in Example 1-1, a metal decorative film (1) as Sample 8 was obtained.
Sample 8 had a peel strength of 0.016 kN / m or more according to the peel test between the front film (2) and the back film (5). Moreover, the Rockwell hardness before ultraviolet curing of the film obtained by separately applying and forming this adhesive was less than HRR50, and the Rockwell hardness after curing by irradiating with ultraviolet rays was HRR100 or more.

Next, it replaced with the material shown in Example 1-1-Example 1-8, and manufactured another metal-tone decoration film.
Example 1-9 :
In place of the back film (5) used in Example 1-1, a metal tone of Sample 9 was prepared in the same manner as in Example 1-1 except that a polypropylene film having a Rockwell hardness of HRR70 and a thickness of 200 μm was used. A decorative film was obtained. The peel strength between the front film (2) and the back film of Sample 9 and the Rockwell hardness of the adhesive layer (4) were the same as those of Sample 1.
Example 1-10 :
Instead of the indium metal layer (3) used in Example 1-1, an aluminum metal layer (3) by aluminum vapor deposition was provided in the same manner as the indium metal layer so that the layer thickness was 50 nm to 60 nm. Otherwise in the same manner as in Example 1-1, a metal decorative film (1) as Sample 10 was obtained. The peel strength between the front film (2) and the back film (5) of Sample 10 and the Rockwell hardness of the adhesive layer (4) were the same as those of Sample 1.
Example 1-11 :
Instead of the back film (5) used in Example 1-1, the material and hardness are the same, but the back film (5) having a thickness of 120 μm is used, and the same as in Example 1-1. Thus, a metallic decorative film (1) as sample 11 was obtained. The peel strength between the front film (2) and the back film of Sample 11 and the Rockwell hardness of the adhesive layer (4) were the same as those of Sample 1.

Experimental Example 2 : Production of a metallic decorative resin molded body (11) :
Using the metal-decorated film of Sample 1 to Sample 11 produced in Experimental Example 1, the resin-molded product (12) was integrated to produce a metal-decorated resin molded product. Although the manufacturing method will be described later, the obtained metal-decorated resin molded bodies were used as Sample 101 to Sample 111, respectively.
Moreover, about the sample 1 and the sample 9, another metal tone decoration film which made these metal tone decoration films (1) thermoset at 140 degreeC and hardened the contact bonding layer (4) was produced, respectively. Samples 12 and 13 were prepared, and these samples were integrated with the resin molded body (12) to produce a metal-decorated resin molded body. This metal-decorated resin molded product was designated as Sample 112 and Sample 113, respectively. The Rockwell hardness of the adhesive layer (4) of Samples 12 and 13 was HRR100 or more.

Example 2-1 :
After performing the temporary drawing process by the pressure forming method on the large and sheet-like samples 1, 2, 4, 6, 7, 9, 10, 11 and the heat-cured samples 12, 13, an injection mold (16 , 17) Insert these samples into the mold (16, 17) by injecting the molten resin that will form the resin molded body (12) into an integral molding of the metallic decorative film and the resin molded body (12). The process was executed.
After demolding, these resin-integrated samples are set in a curing mold (18, 19), heated to 120 ° C or higher to cure the blocked isocyanate curing agent contained in the sample, and metal adjustments to make samples 101, 102, 104, 106, 107, 109, 110, 111, 112, 113, respectively. A decorative resin molding (11) was obtained.
Samples 101, 102, 104, 106, 107, 110, and 111 have a metallic decorative resin molded body (11) excellent in metallic luster of samples 1, 2, 4, 6, 7, 10, and 11 fixed to the surface, and cracks in the film and adhesive layer (4). It was a metallic decorative resin molded article having no chipping or discoloration, having a pencil hardness of H or more on the surface, and no dents being observed even when the surface was pressed with a pencil.
The metal-decorated resin molded body of Sample 109 using a soft film as the back film (5) is excellent in the metallic luster of the metal-decorated film of Sample 9 fixed to the surface, and the film or adhesive layer (4). Although there was no cracking, chipping, or discoloration, when the surface was subjected to a pencil test with a pencil of hardness H, a dent was observed and it did not return.
Sample 112 and sample 113 metal-decorated resin molded body using a metal-decorated film subjected to a curing treatment of the adhesive layer (4) is an adhesive layer (4) during integral molding with the resin molded body (12). As a result, the metal layer (3) was unevenly seen. In addition, the metal-decorated resin molded body of Sample 113 using a soft film for the back film (5) not only cracked the adhesive layer (4), but also the surface was subjected to a pencil test with a pencil of hardness H. The indentation was observed and it did not return.

Example 2-2 :
In the same manner as in Example 2-1, large-sized and sheet-like samples 5 and 8 were temporarily drawn.
Next, the three-dimensional samples 5 and 8 are set in the recesses (22a) of the molding jig (22) for molding the resin molded body (12), and ultraviolet rays are used in the samples 5 and 8 using the dispenser (23). A curable adhesive liquid resin was injected. Then, the ultraviolet light (24) is used to irradiate the liquid resin and the samples 5 and 8 with ultraviolet rays, in addition to the molding of the resin molded body (12) and the integral molding of the samples 5 and 8 and the resin molded body (12), The adhesive layers (4) of Samples 5 and 8 were cured to obtain metallic decorative resin molded bodies (11) as Sample 105 and Sample 108, respectively.
This metallic decorative resin molded body (11) is excellent in the metallic luster of the samples 5 and 8 adhered to the surface, has no cracks, chips or discoloration of the film or adhesive layer (4), and has a pencil hardness on the surface. It was a metal-decorated resin molded body that was H or higher and no dent was observed even when the surface was pressed with a pencil.

Example 2-3 :
For the large-sized sheet-like sample 3, an integral molding step with the resin molded body (12) and a curing step of the adhesive layer (4) of the sample 3 were simultaneously performed.
First, the sample 3 is sandwiched so that the surface film (2) faces the molding die (33), the molding die (33, 34) is closed, and molten resin is poured into the molten resin. The resin molded body (12) was molded while the sample 3 was deformed along the cavity surface (33a) of the molding die (33).
At this time, in addition to the integral molding of the sample 3 and the resin molded body (12), the microencapsulated curing agent was cured by the pressure of the molten resin. Finally, an excess portion was cut to obtain a metal-decorated resin molded article (11) as sample 103.
This metallic decorative resin molded body (11) is excellent in the metallic luster of the sample 13 fixed on the surface, has no cracks, chips or discoloration of the film or adhesive layer (4), and has a pencil hardness of H or more on the surface. Yes, it was a metallic decorative resin molded product in which no dent was observed even when the surface was pressed with a pencil.

Experimental Example 3 Production of deep-drawn metallic decorative resin molded body (11) :
Using the metal-decorated film of Sample 1 to Sample 13 used in Experimental Example 2, a metal-decorated resin molded body was produced in the same manner as in Experimental Example 2, but unlike Experimental Example 2, in this Experimental Example, In the drawing of the metallic decorative resin molding, deep drawing was performed so that the drawing ratio was 0.25.
The same results as in Experimental Example 1 were obtained except for Sample 10 using an aluminum metal layer and Sample 110 and Sample 111 manufactured using Sample 11 having a back film thickness of 120 μm.
However, with respect to the sample 110, a portion that appeared to be whitened was generated as the metal layer (3) was broken. Further, for the sample 111, after the deep drawing temporary drawing step, the sample 111 was returned and deformed before being integrated with the resin molded body (12). Therefore, it does not match the shape of the injection mold (16, 17), and when it is injection-molded, the corners of the metal-like decorative molded body are whitened, and part of the molded body is wrinkled. I became a body.

1 Metallic decorative film (first embodiment)
2 Surface Film 3 Metal Layer 4 Adhesive Layer 5 Back Film 11, 21, 31 Metallic Decorated Resin Molded Body (Second Embodiment)
12 resin molding 12a collar 13 compression box 13a inlet 14 male 14a head 15 cutting tool 16 molding die 16a cavity 17 molding die 17a inlet 18 curing die 18a recess 19 curing die 22 molding jig 22a Recess 23 Dispenser 24 UV lamp 33 Mold 33a Cavity surface 34 Mold 34a Inlet 35 Cutting blade

Claims (9)

In the metal decoration film having at least a metal carrying film to which the metal layer is attached, a cover film for protecting the metal layer, and an adhesive layer for fixing the metal carrying film and the cover film,
The pencil hardness of the surface film that is either the metal-carrying film or the cover film is H or more,
The back surface film, which is either the metal-carrying film or the cover film, has a Rockwell hardness of HRR 100 or more, and is a resin film that is more easily deformed during drawing than the front film,
The adhesive layer is an adhesive layer made of a curable adhesive having a Rockwell hardness of HRR 100 or more after a predetermined curing process, while having a Rockwell hardness smaller than HRR50,
A metallic decorative film characterized in that a metal-carrying film and a cover film are fixed and can be drawn.   The metallic decorative film according to claim 1, wherein the adhesive layer is made of a reaction curable adhesive that is cured by at least one curing reaction selected from heating, pressurization, and active energy ray irradiation.   The metal-tone decorative film according to claim 1 or 2, wherein the adhesive layer is a reactive curable adhesive containing microcapsules enclosing a curing agent.   The metallic decorative film according to any one of claims 1 to 3, wherein the metal layer is a discontinuous vapor deposition layer made of indium.   The thickness of a back film is 2 times or more of a surface film, and is 400 micrometers or less, The metal decoration film in any one of Claims 1-4.   A metal-decorated resin molded body in which the back film of the metal-decorated film according to any one of claims 1 to 5 is fixed to the surface of the resin molded body and decorated. In the manufacturing method of the metallic decoration resin molding which the back surface film of the metallic decoration film of any one of Claims 1-5 adheres to the surface of a resin molding, and decorates.
The metal-like decorative film is temporarily drawn into a three-dimensional shape along the surface shape of the resin molded body, and then the temporarily-drawn metal-like decorative film and the resin molded body are integrated, and the metal-like decorative film is bonded. A method for producing a metallic decorative resin molded product, characterized in that the layer is subjected to a curing treatment, and the adhesive layer is cured to a HRR of 100 or more with Rockwell hardness. In the manufacturing method of the metallic decoration resin molding which the back surface film of the metallic decoration film of any one of Claims 1-5 adheres to the surface of a resin molding, and decorates.
The metal-like decorative film is integrated with the resin molded body in the form of a flat plate, and the adhesive layer of the metal-like decorative film is subjected to a curing treatment, and the adhesive layer is hardened to HRR 100 or more with Rockwell hardness. A method for producing a metallic decorative resin molded product characterized by the above.   The manufacturing method of the metal tone decoration resin molding of Claim 7 or Claim 8 which performs the deep drawing whose drawing ratio is 0.1-0.5 with respect to a metal tone decoration film.

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