JP5617257B2 - Information display panel - Google Patents

Description

  The present invention relates to an information display panel including a metal layer, and more particularly to an information display panel having a light transmission property in the metal layer.

Conventionally, when light is transmitted through scales, numbers, letters, etc. provided on the back side of a thin metal deposition film on an information display panel such as a mobile phone, scales, numbers, letters, etc. appear and light does not pass through. It has been proposed that scales, numbers, letters, etc. do not appear (see Patent Document 1). The technique disclosed in Patent Document 1 discloses using an aluminum vapor deposition film as a thin metal vapor deposition film.
On the other hand, a technique using a metal thin film is known as an elemental technique for improving visibility and design on appearance. For example, a metal-deposited film in which aluminum is vapor-deposited on a paper or film substrate for imparting cosmetics is widely used for packaging materials, cards, posters, seals, labels, and the like. The metal vapor deposition film is mainly manufactured by a so-called direct vapor deposition method in which aluminum is directly deposited on a base material. Recently, there is a manufacturing method in which a metal vapor deposition film is transferred to a base material through an adhesive. It has been proposed to give various appearances and patterns while having metallic luster by using a method of transferring a metal vapor deposition film (see Patent Document 2). The technique disclosed in Patent Document 2 discloses that various appearances and patterns are imparted while having metallic luster.

Japanese Patent No. 4192842 JP 2000-355072 A

  However, there is a problem that scales, numbers, characters, etc. are not clearly and beautifully displayed. An object of the present invention is to provide an information display panel in which scales, numbers, characters, and the like are clearly and beautifully displayed by limiting the surface resistance value of a metal layer having metallic luster to a certain range.

The present invention has the following configuration in order to solve the above problems.
According to the first aspect of the present invention, the support, the metal layer, the antioxidant layer, and the decorative layer are laminated in this order from the support toward the viewer side, and a pattern is formed on the side opposite to the viewer side of the support. An information display panel comprising a layer , wherein the metal layer has a surface resistance in a range of 1.3 to 100 Ω / □.
According to the present invention , when observing from the viewing direction when the light source is not lit, a metal layer having metallic luster is observed, and when the light source is lit, an effect is obtained in which light is transmitted through the metal layer.

The invention according to claim 2 is the information display panel according to claim 1 , wherein the pattern of the decoration layer is located outside the pattern of the pattern layer as viewed from the observer side. .
According to the present invention , the presence of the antioxidant layer on the metal layer can maintain the metallic luster without the metal layer being oxidized, and display with higher quality is possible.

A third aspect of the present invention is the information display panel according to the first or second aspect, wherein the antioxidant layer is composed of a plurality of layers .
According to the present invention , the decorative layer is composed of ink or resin, and exhibits a design effect, thereby improving aesthetics. In addition, when an embossed pattern or a mat pattern is provided as a decorative layer, there is an effect that the degree of strength of metal gloss such as a matte pattern can be appropriately adjusted.

According to a fourth aspect of the invention, as claimed in any one of claims 1-3, wherein the decorative layer or the support antistatic layer on the pattern layer of is characterized in that it is laminated It is an information display panel.
According to the present invention , the antistatic layer makes it difficult for the decorative layer and the antioxidant layer to be soiled, scratched, etc., so that the effect of maintaining the metallic luster and light transmittance of the metal layer is produced.

According to a fifth aspect of the present invention, the support is any one of polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polymethyl methacrylate, acrylic, polystyrene, methacryl / styrene copolymer or acrylonitrile / styrene copolymer. the information display panel according to claim 1, any one of 4, which is a Kano resin.
According to the present invention , since polycarbonate is excellent in heat resistance and impact resistance, it can be used in harsh environments, and since polypropylene and foamed polypropylene are lightweight, they can be easily processed in the manufacturing process. The information display panel is also lightened. In addition, by using polypropylene, no harmful gas such as halogen gas is generated at the time of discarding combustion, so that the effect of reducing the environmental load is produced.

According to a sixth aspect of the invention, the surface of the metal layer, an information display panel according to claim 1, any one of 5, characterized in that a fine unevenness.
According to the present invention , by providing fine irregularities in the metal layer, light is diffused or can be expressed in patterns such as a hairline pattern, an embossed pattern, a mat pattern, and a hologram pattern, thereby improving aesthetics. An effect is produced.

In the present invention, since the metal layer has sufficient light transmissivity, when the light source is turned on, there is an effect that characters and figures drawn on the back surface can be clearly and beautifully transmitted through the metal layer.

It is one Example of this invention.

  Exemplary embodiments of an information display panel according to the present invention will be described below in detail with reference to the drawings.

  As shown in FIG. 1, the metal layer 4, the antioxidant layer 3, the decorative layer 2, and the antistatic layer 1 are sequentially laminated on one surface side of the support 5, and the pattern layer 6 is formed on the other surface of the support 5. Are laminated. The light source 7 is disposed on the other surface side of the support 5 and the visual observation is performed from the observer 8 side.

  The support 5 may be a general resin such as polycarbonate, polypropylene, expanded polypropylene, polyvinyl chloride, acrylic resin, etc., but in the present invention, polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polymethyl methacrylate, acrylic, It is preferably a resin of any one of polystyrene, methacryl / styrene copolymer or acrylonitrile / styrene copolymer. In particular, polycarbonate is excellent in heat resistance and impact resistance, and can be used for a long time even in harsh environments such as outdoors.

A metal layer 4 is formed on the support 5.
The metal layer 4 is preferably made of aluminum, zinc, gold, silver, platinum, nickel, tin or the like.
The metal layer 4 has a metallic luster, the metallic gloss also in the present invention, consisting as it raw umbrella is possible. In the present invention, it is preferable to use aluminum. This is because aluminum has a very high metallic gloss and can realize a beautiful display.

  As the metal layer 4, it is preferable to use a metal vapor-deposited layer formed by vapor-depositing a metal because a thin film can be formed with high quality and unevenness or the like can be easily provided on the surface. As a method of forming the metal layer, a method of directly vacuum-depositing the support 5 or a transfer of transferring a metal vapor-deposited layer formed by vacuum-depositing on a transfer film to the support 5 coated with an adhesive. Vapor deposition methods can be used.

  In the present invention, fine irregularities are provided on the surface of the metal layer 4 after transfer by using a transfer film with fine irregularities using a transfer vapor deposition method. A hairline pattern, an embossed pattern, a mat pattern, a hologram pattern, or the like can be expressed by the fine unevenness.

  An abrasive can be used as a method for providing fine irregularities on the transfer film. An abrasive | polishing agent is comprised from the three main elements of an abrasive grain, an adhesive agent, and a synthetic fiber. As the abrasive grains, a mixture of aluminum oxide and silicon carbide can be used, and fine irregularities can be adjusted depending on the hardness and size of the grains.

  The fine irregularities can have a design such as a hairline tone or a mat pattern, and in particular, the mat pattern is a matte pattern, and the degree of strength of the metallic gloss can be appropriately adjusted.

  Examples of the adhesive used when the metal layer is transferred to the support include various two-component curable adhesives and photocurable adhesives used for dry lamination. The two-component curable adhesive is cured with the passage of time, and can be further cured in a shorter time by heating. For example, a urethane resin adhesive or an epoxy resin adhesive can be used. The photocurable adhesive is of a type that is cured by irradiation with an electron beam or ultraviolet rays. For example, a urethane resin adhesive or an acrylic resin adhesive can be used.

Although not shown, a protective layer may be provided on the metal layer 4. The protective layer is a reverse roll coating using a gravure printing method, screen printing method, gravure plate, and a pattern obtained by dissolving or decomposing an acrylate copolymer resin and optionally other additives in a solvent such as water or an organic solvent. It is formed by applying and drying in accordance with a normal coating method such as a method. The thickness of the protective layer is usually about 0.1 to 5 μm, preferably about 0.5 to 3 μm.
When a protective layer is laminated | stacked, the decoration layer 2 and the antistatic layer 1 which are mentioned later are laminated | stacked in order on a protective layer.

An antioxidant layer 3 is laminated on the metal layer 4.
The antioxidant layer 3 is preferably composed of a transparent or translucent resin. Printability can be imparted by an ink receiving layer which is one of the constituent layers of the antioxidant layer 3 described later, and oxidation of the metal layer 4 can be prevented.

The antioxidant layer 3 has a three-layer structure of a primer layer, an anchor layer, and an ink receiving layer.
A primer layer is laminated | stacked on the metal layer 4, and improves the adhesiveness of the metal layer 4 and the anchor layer mentioned later.
The anchor layer absorbs moisture that has passed through the ink receiving layer, which will be described later, to prevent moisture from penetrating into the metal layer 4, and improves the adhesion between the ink receiving layer and the metal layer 4 to improve printability. In addition, peeling of the metal layer 4 and the ink receiving layer can be prevented.
As the anchor layer, a resin mainly composed of a polyester-modified resin can be used, and the thickness of the anchor layer is 1 to 5 μm.
The ink receiving layer is not particularly limited as long as the ink does not bleed. For example, a processing agent of a polyester resin aqueous dispersion can be used. The thickness is 10 to 20 μm.
Therefore, since the oxidation layer 3 is laminated, the metal layer 4 can be prevented from being oxidized, so that the metallic gloss can be maintained.

The decorative layer 2 is laminated on the antioxidant layer 3.
Since the decorative layer 2 can be provided with a pattern or the like having metallic luster, further metallic luster or a design effect is exhibited. The decorative layer 2 is directly observed by the observer 8, and an ink generally used for printing can be used for the pattern to be used, and a pattern according to preference can be printed.

  As the pattern of the decorative layer 2, an embossed pattern, a mat pattern, or the like is used. The embossed pattern and the mat pattern are matte patterns, and the effect of appropriately adjusting the degree of strength of the metallic gloss is produced.

  As a method for forming the decorative layer 2, letterpress printing, flexographic printing, offset printing, screen printing, gravure printing, ink jet, and the like can be used, but it is preferable to use screen printing having excellent light resistance.

The antistatic layer 1 is laminated on the decorative layer 2.
The antistatic layer 1 is laminated on the entire surface of the decorative layer 2 and is made of a transparent or translucent resin. Since the antistatic layer is present, dirt and scratches on the decorative layer and the antioxidant layer can be prevented, so that the metallic gloss and light transmittance can be maintained.
The antistatic layer 1 uses a method of forming a sheet by dispersing conductive powder, a surfactant or the like in a resin, a method of applying an antistatic agent to the film surface, and an antistatic polymer having a carboxyl group. A method etc. can be adopted.

  The pattern layer 6 is provided on the other surface of the support 5. The pattern layer 6 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing. A portion where the pattern layer 6 is not provided becomes a character, a figure, or the like. When the light source is turned on, the pattern layer has a light shielding property, and therefore does not transmit light.

Examples of the present invention will be specifically described. FIG. 1 shows an embodiment of the information display panel 9 of the present invention.
By polishing with a polishing agent mixed with aluminum oxide and silicon carbide, the surface resistance value becomes 1.3Ω / □ by vacuum deposition on the surface of the biaxially oriented polypropylene transfer film with fine irregularities. After forming an aluminum vapor deposition layer, a two-part polymerization type polyurethane as an adhesive was applied thereon so as to have a thickness of about 4 μm.

  Here, the reason why the surface resistance value of the metal layer which is the aluminum vapor deposition layer is set to 1.3Ω / □ is that the metal gloss and light transmittance (light-shielding property) obtained from Table 1 are taken into consideration. This is because the metal gloss is emphasized. As is clear from Table 1, when the metal layer is thick, that is, when the surface resistance value is high, the amount of light transmitted through the metal layer decreases. When the metal layer is too thin, that is, when the surface resistance value is low, the metallic luster of the metal layer is lost. Therefore, the surface resistance value of the metal layer 3 is preferably 1.3Ω / □ to 100Ω / □. The lower limit is more preferably 2.6Ω / □ or more, and the upper limit is more preferably 60Ω / □, more preferably 30Ω / □ or less. The surface resistance value is a value measured in-line during the vapor deposition process, and the measurement method is easier than the conventional film thickness measurement. It can also be measured when the film thickness is very thin.

In the measurement of Table 1, an LED light source of 1,000 cd / m ² is placed on the other surface side of the information display panel of the present invention, and the surface resistance value of the information display panel is changed to observe from a distance of 1 m. The gloss and light transmission were evaluated. In the case of aluminum vapor deposition, the surface resistance value decreases as the thickness of the vapor deposition layer increases.

Depending on the surface resistance value of the metal layer 4, the metallic luster and the light shielding property can be appropriately selected. For example, when the light transmittance is regarded as important, the surface resistance value is preferably about 1.3Ω / □.
Although a method of controlling the thickness of the metal layer by changing to the surface resistance value is also conceivable, there is a problem that the thickness is uneven and appropriate measurement is difficult. Therefore, it is preferable to use a method of controlling the surface resistance value, and as shown in Table 1, it has been confirmed that there is a correlation with light transmittance and metallic luster.

A polycarbonate (trade name: FE-2000B; Mitsubishi Gas Chemical Co., Ltd.) as a support was layered on the adhesive, and the whole was thermocompression bonded to cure the adhesive.
Then, the transfer film was peeled off from the aluminum vapor deposition layer, and an aluminum transfer vapor deposition layer and polycarbonate were integrated through an adhesive.

The polycarbonate as a support has a plate thickness of 400 μm.
A primer layer mainly composed of a urethane resin was formed on the surface of the aluminum vapor deposition layer. An anchor layer having a thickness of about 1.5 μm was formed on the primer layer with a resin (trade name: WAC-10, manufactured by Takamatsu Yushi Co., Ltd.). On the anchor layer, an aqueous dispersion of a polyester resin (trade name: NS-141LX, manufactured by Takamatsu Yushi Co., Ltd.) is applied so as to have a solid content thickness of 15 μm, and an ink receiving layer is formed to form the antioxidant layer 3. Laminated.
A decorative layer 2 having a mat pattern was formed on the antioxidant layer by screen printing using a two-component curable screen process pattern (trade name SS65 series; Toyo Pattern Manufacturing Co., Ltd.).

Screen printing was performed on a portion where light was not transmitted using a two-component curing type screen process pattern (trade name: SS65 series; Toyo Picture Manufacturing Co., Ltd.) on the other surface of the support. By making the shape of the portion through which light is transmitted a character, a figure, or the like, the light is transmitted to the character, the figure, etc. when the light source is turned on. It corresponds to the picture layer 6 of the present invention.
When the pattern layer is provided, the light incident from the pattern layer side passes only through the area where the pattern layer does not exist. Therefore, the area through which the pattern layer passes is observed particularly brightly, and various displays are possible.
In particular, when the light source 7 is provided and turned on, this tendency becomes remarkable and a beautiful display is possible.

The antistatic layer 1 was provided on the entire surface of the decorative layer using a method in which conductive powder, a surfactant, or the like was dispersed in a resin and formed into a layer shape.
When observing from the viewing direction when the light source was turned on, numbers, figures, letters, etc. applied on the pattern layer could be observed through the aluminum deposition layer and displayed clearly and beautifully. When the light source is not lit, the metal layer can be observed through the antioxidant layer and the antistatic layer in the range where the decorative layer is not present, and the range where the decorative layer is present is the pattern applied by the decorative layer Could be observed.
With the decorative layer 1, a pattern or the like excellent in design effect could be printed.

DESCRIPTION OF SYMBOLS 1 Antistatic layer 2 Decoration layer 3 Antioxidation layer 4 Metal layer 5 Support body 6 Picture layer 7 Light source 8 Observer 9 Information display panel

Claims (6)

From the support toward the viewer side, the support, the metal layer, the antioxidant layer, and the decorative layer are laminated in this order, and a pattern layer is provided on the opposite side of the support from the viewer side, and the surface of the metal layer An information display panel having a resistance value in a range of 1.3 to 100Ω / □. 2. The information display panel according to claim 1 , wherein when viewed from an observer side, the pattern of the decorative layer is positioned outside the pattern of the pattern layer . Information display panel according to claim 1 or 2, characterized in that the oxidation layer is composed of a plurality of layers. The information display panel according to any one of claims 1 to 3 , wherein an antistatic layer is laminated on the decorative layer or the pattern layer of the support . The support is a resin selected from polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polymethyl methacrylate, acrylic, polystyrene, methacryl / styrene copolymer or acrylonitrile / styrene copolymer. The information display panel according to any one of claims 1 to 4. On the surface of the metal layer, information display panel according to claim 1, any one of 5, characterized in that a fine unevenness.