JP2584650B2 - Metallic film - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a metal sheet used for bonding to an exterior panel of an automobile or the like and for giving a metallic design.

(Prior Art) In recent years, in the exterior of automobiles and the like, metal designs, that is, those decorated with a metallic feeling are preferred, and in conjunction with the era of individualization, various types such as aluminum, bronze, etc. It is also desired to have a metallic design.

Conventionally, in order to respond to such demands, for example, as shown in FIG.
Are sequentially laminated on the hot stamp film 2,
Attempts have been made to cut into a desired design contour and stick it to a portion to which a metal design is applied, such as a vehicle outer panel, an exterior panel, or an exterior component.

As for a hot stamping film, a film having a transparent clear layer provided on the top layer 23 of the hot stamping film 2 has been proposed (Japanese Patent Publication No. 58-25329).
issue).

Furthermore, in order to cope with the severe use environment conditions of the car,
The top layer 23 is overcoated with a vinyl fluoride film such as a detra film known by DuPont products via an adhesive layer, and in addition to this, a vinyl chloride film is placed under the adhesive layer 21. Undercoat is adopted.

(Problems to be Solved by the Invention) However, when a metal design is applied to a body outer panel, an exterior part, an exterior part, or the like of an automobile using the hot stamp film 2 as described above, the hot stamp film 2 Also, even when a transparent clear layer is provided on the top layer 23, water containing acid or alkali such as when rainwater or car washing enters from the end of the film, and the metal deposition layer 22 generally has a thickness of several to Due to the thinness of + Å, most kinds of metals, for example, metals such as Al and Sn used for vapor deposition metals have a problem that corrosion progresses, so that the metallic appearance is lost with time, and the appearance is impaired.

On the other hand, when Cr or Cr-Ni, which has excellent corrosion resistance to rainwater, water containing acid or alkali, is used for the metal deposition layer 22, the expressible range of the metal design is limited to these. There is a problem that it is limited to the metallic tone of metal and cannot meet the demands of the age of individualization. (As a method of expressing the design of bronze touch, the use of brass (copper-zinc alloy) is conceivable, but the above-mentioned problem of corrosion occurs.) Also, seal the film end to remove rainwater, acid, or alkali. Although it is conceivable to adopt a structure that does not allow water to enter, aluminum-like and bronze-like designs are possible, but it takes time and effort to seal the edges of individual films according to the design. There is a drawback above. Furthermore, there is a problem in manufacturing such that sealing is troublesome, and thus there is a problem that the cost is high. Further, on the top layer 23, for example,
It is also conceivable to provide a transparent colored layer formed by incorporating a small amount of an application or dye, but for example, when the base color is black, such as when Cr or Cr or Cr-Ni is used for the metal deposition layer 22. Is affected by the background color, and it is difficult to express aluminum or pearl tones, and the transparency of the transparent coloring layer decreases, especially when the concentration of the application or dye in the transparent coloring layer is increased, concealing the background There is a problem that transparency cannot be achieved.

The present invention has been made in view of the above circumstances, and it is possible to apply various metallic designs such as aluminum tone, bronze tone, etc. to, for example, a body outer panel, an exterior panel, and exterior parts of an automobile, and It is an object of the present invention to provide a metal tone film in which the design can be stably maintained for a long period of time.

(Means for Solving the Problems) The present invention has been made to achieve the above object, and is provided directly or via a transparent layer on a resin film surface of a transparent resin film having a pearly print layer formed on one surface. An object of the present invention is to provide a metal tone film characterized by sequentially laminating a corrosion-resistant metal thin film and an adhesive layer.

The pearl print layer is formed by coating a transparent resin film on one side with a translucent printing ink obtained by mixing a pearl pigment, for example, mica or titanium dioxide coated with the transparent binder component in a solvent. It can be formed by screen printing or the like.

Corrosion-resistant metal thin films have excellent corrosion resistance, such as Cr and Cr-
A metal or alloy such as Ni can be formed by a thin film forming method such as a vacuum evaporation method or a sputtering method.

Further, the metal-tone film of the present invention has a transparent adhesive layer on a resin film surface of a transparent resin film having a pearl-tone print layer formed on one side, a transparent resin film different from the transparent resin, a corrosion-resistant metal thin film, and an adhesive. It is preferable to use a layer obtained by sequentially laminating agent layers or a layer having a transparent clear layer on a pearl print layer.

(Action) According to the film, the transparent resin film interposed between the pearl print layer and the corrosion-resistant metal thin film, or the transparent resin film and the transparent layer are transparent. A thin metal film is observed. Pearl print layer, by changing the type and amount of the pearl pigment contained in it, the thickness of the pearl print layer, etc.,
Light transmission, reflection and color tone can be changed over a wide range. Therefore, for example, Cr or Cr-Ni
By changing the pearly print layer even when using
Not only the metallic feeling unique to Cr-Ni but also various metallic feelings such as aluminum tone and bronze tone are expressed. The change in transmission and reflection of light by the pearly print layer depends on the reflection (scattering) of light by the pearly pigment particles contained in the pearly print layer. The change in color tone is caused by coating the pearl-colored pigment particles (for example, mica) with a transparent substance (for example, titanium dioxide) having a different refractive index from the particles in a substantially uniform film thickness. The color changes from white to yellow, red, blue, and green as it increases. This is considered to be due to, for example, interference between light reflected on the mica surface and light reflected on the surface of titanium dioxide coated thereon, that is, the same principle as that of nutring.

The metal design of the metal film of the present invention can be stably maintained for a long period of time because a corrosion-resistant metal thin film is used, and the metal thin film that forms the base color is rainwater, water containing acid or alkali, or the like. And excellent corrosion resistance.

(Example) Hereinafter, an example is described with reference to drawings.

FIG. 1 shows an example of the metal-tone film of the present invention. The metal-tone film 1 has a transparent clear layer 11, a pearl-like print layer 12, a transparent resin film 13, a transparent adhesive layer 14, and a transparent resin. It has a structure in which a transparent layer 16 composed of a film 15, a corrosion-resistant thin metal plate 17, and an adhesive layer 18 are sequentially laminated.

The metal film 1 is usually formed by forming a pearl print layer 12 and a transparent clear layer 11 in this order on one side of a transparent resin film 13 and a corrosion-resistant metal thin film 17 on one side of a transparent resin film 15 in advance. Using the film B obtained above, the film A and the film B are manufactured by bonding a transparent adhesive layer 14 to the mutual resin film surface to integrate them, and forming an adhesive layer on the corrosion-resistant metal thin film 17. You.

Here, the transparent clear layer 11 is made of denatured acrylic resin, urethane-based resin, or the like, and has a thickness of usually 5 to 50 μm. The transparent clear layer 11 protects the pearl print layer 12 covered by the transparent clear layer 11 and improves the wear resistance and weather resistance of the metal film 10.

The pearl print layer 12 has a thickness of 5 to 5 formed by printing a translucent printing ink in which a pearl pigment is compounded.
10μ layer, this printing is generally by screen printing. As described above, the pearl tone pigment contained in the pearl tone print layer 12 modulates light such as light reflection, transmission, and color tone change. The pearl pigment includes, for example, mica (mica) having a particle size of 5 to 40 μm and a particle thickness of 0.1 to 1 μm.
And the one coated with titanium dioxide is used, and in the latter, the thickness of the titanium dioxide coating layer is set to a certain thickness at which the reflected light from the mica surface and the reflected light from the coating layer surface interfere to form a color. By doing, the color tone is yellow,
Changes to red, purple, blue and green. Cr or Cr-
Even if Ni or the like is used, for example, by using mica coated with titanium dioxide to a thickness (approximately 0.4 μ) giving a yellow color tone as a pearl pigment, the metal tone film 10 is expressed in a bronze tone.

For the transparent resin film 13, for the translucent printing ink for forming the pearl-like print layer 12, for example, excellent printability such as being capable of forming a coating with good adhesiveness, and a transparent resin, for example, soft vinyl chloride, A vinyl chloride-vinyl acetate copolymer is used. Its thickness is usually about 50μ.

The transparent adhesive layer 14 is a layer formed by solidifying a urethane-based adhesive, which is often used for bonding plastics, and bonds the films A and B together. The thickness is, for example, about 30 μ.

On the transparent resin film 15, a metal thin film can be formed by a thin film forming method such as a vacuum evaporation method, for example, with good adhesiveness.
A transparent resin film such as polyester such as polyethylene terephthalate (PET) or polyvinyl fluoride which is excellent in forming a metal thin film is used.

The corrosion-resistant metal thin film 17 is formed of a metal having excellent corrosion resistance such as Cr and Cr-Ni by a thin film forming method such as a vacuum evaporation method and a sputtering method. The thickness may be in the range of the usual number Å to number + Å.

The adhesive layer 18 is used for bonding to a body outer panel or exterior panel of an automobile, an exterior component, or the like, preferably for enabling adhesion by adhesion, and an acrylic or rubber-based adhesive is usually used. The thickness is 20-40μ.

The metal-tone film 1 has excellent wear resistance and weather resistance due to the transparent clear layer 11 and the pearl-tone print layer 12 and the corrosion-resistant metal thin film 17 owing to the configuration described above.
Various kinds of pearlescent pigments (for example, mica uncoated, mica coated with titanium dioxide of various thicknesses), blending amount and thickness of pearly printing layer 12 included in aluminum pigment, bronze pigment, etc. Metallic expression is made.
In addition, since the corrosion-resistant metal thin film 17 is used, the metal-like film 1 is cut into a desired design contour, and an adhesive layer is applied to a partner material, for example, a car body outer panel, an exterior panel, an exterior component, or the like.
If 18 are bonded together, rainwater or
Even if water containing an acid or an alkali enters, the metal design is hardly corroded, and the metal design is stably maintained for a long period of time as in the initial stage (at the time of bonding).

As mentioned above, although the specific example of the present invention was explained, the present invention is not limited to this example, for example, the pearl-like printing layer 12 is abrasion resistance, a transparent clear layer excellent in weather resistance. The same material as that of 11 is used, and the transparent clear layer 11 is not provided.The transparent resin film 13 is suitable for printing on translucent ink when forming the pearl print layer 12 and has excellent metal thin film forming properties. Or a transparent layer 16 consisting of a transparent adhesive layer 14 and a transparent resin film 15 or a pressure-sensitive adhesive for the adhesive layer 18 and a release paper on the surface. Various embodiments are possible within the scope described in the claims, such as being provided by coating.

(Effects of the Invention) As described above, since the metal-tone film of the present invention uses a corrosion-resistant metal thin film, it can be used even when it is adhered to a body outer plate, exterior panel, exterior component, or the like of an automobile. Even if rainwater or water containing acid or alkali enters from the end, the metal thin film is hardly corroded, and the metal design is stably maintained for a long period of time without changing from the initial state. In addition, the pearl-like print layer modulates the underlying metal thin film in a pearl-like manner without using a coloring dyestuff,
Since it can be colored, it is possible to express a metallic tone such as an aluminum tone or a bronze tone without impairing the metallic feeling. Therefore, according to the present invention, various metallic tones,
Metallic films that are useful for creating beautiful designs without losing the metallic tone for a long period of time are provided, so that individual designs and decorations of car body outer panels, exterior panels, exterior parts, etc. are possible. is there.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of the metal film of the present invention, and FIG. 2 is a cross-sectional view showing an example of a hot stamping film (conventional product). 1. Metallic film 12 Pearl print layer 13 Transparent resin film 16 Transparent layer 17 Corrosion-resistant metal thin film 18 Adhesive layer

Claims (1)

(57) [Claims] 1. A metal tone, wherein a corrosion resistant metal thin film and an adhesive layer are sequentially laminated on the resin film face of a transparent resin film having a pearl print layer formed on one side, directly or via a transparent layer. the film.