JPH07329239A - Etching foil sheet and production thereof - Google Patents

Abstract

PURPOSE:To obtain a foil sheet capable of easily forming a complicated figure by etching and capable of applying decorative printing on the figure. CONSTITUTION:A transparent color layer 4 is formed on a flexible transparent base material sheet 3 made of a synthetic resin and a metal vapor deposition layer 5 is formed thereon and a protective layer 6 is formed thereon and all of the color layer 4, the vapor deposition layer 5 and the protective layer 6 are alkali-soluble. A self-adhesive layer 2 is formed on the surface opposite to the vapor deposition layer 5 of the base material sheet 3 and a release sheet 1 is laminated thereon.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vapor-deposited foil sheet and a method for manufacturing the same.

[0002]

2. Description of the Related Art For example, a display board for decorating the surface of a game machine such as a pachinko machine or a slot machine is used. This display board is made by attaching various figures, patterns, characters, etc., printed on a synthetic resin base sheet to a transparent board, and to increase interest in the game Various decorations that attract the eyes are made. For the decoration of the display board, metallic colors of various colors such as gold and silver, which give a gorgeous feeling, are often used.

Conventionally, in order to realize this type of metallic color, it is general to use a metal vapor deposition sheet, a thermal transfer foil, or the like. The metal vapor-deposited sheet is formed by vacuum-depositing metal such as aluminum on a synthetic resin base sheet, and may be put on the market as a tack sheet with an adhesive layer provided on one side in advance. is there. This tack sheet is mainly used in fields such as stickers, labels and stickers. The thermal transfer foil is also called a hot stamp and is used by thermocompression bonding a metal foil having an adhesive layer to a plate such as an acrylic plate.

[0004]

By the way, generally, etching processing is convenient for processing a vapor deposition film or a metal foil on a substrate into a complicated shape. In particular, the display of the game machine as described above has many complicated characters and patterns, and etching processing of patterns and the like is desired when a metallic color is realized in such displays. However, in the conventional metal vapor deposition sheet described above, a metallic color other than silver has a transparent colored layer formed in advance on a synthetic resin base sheet (for example, for gold, the base sheet is preliminarily colored yellow). If the vapor-deposited film is removed by etching), the colored color of the base material sheet will be exposed later, resulting in a significant adverse effect on the subsequent decoration. In addition, a tack sheet having an adhesive layer on one side in advance cannot be etched because of the adhesive layer.
Therefore, there is a limit to the creation of complicated patterns.

On the other hand, the thermal transfer foil has a design problem due to restrictions on the size, shape, material and dimensional accuracy, and since the vapor deposition layer has poor solvent resistance, subsequent printing is difficult. there were. Further, when the target area is large, there is a drawback that jumps and dropouts (pinholes) are likely to occur. In addition, since there is an adhesive layer for thermocompression bonding, etching processing could not be performed as with the tack sheet. The present invention has been made in view of the above, and an object thereof is to provide a foil sheet and a manufacturing method thereof capable of easily processing a complicated figure or the like by etching and performing decorative printing on the foil sheet. There is.

[0006]

Means for Solving the Problems An etching foil sheet according to the present invention which achieves the above-mentioned object has a transparent colored layer formed on a transparent resinous base material sheet made of synthetic resin, And a protective layer for the vapor-deposited layer is formed thereon, and the colored layer, the vapor-deposited layer and the protective layer are alkali-soluble. Further, the etching foil sheet according to the present invention, a metal vapor deposition layer is formed on a synthetic resin-made base material sheet, and a transparent colored layer which also functions as a protective layer of the vapor deposition layer is formed thereon. In addition, the vapor deposition layer and the colored layer have alkali solubility. In some cases, an adhesive layer is formed on the surface of the base material sheet opposite to the side on which the vapor deposition layer is present, and a release sheet is stretched thereon.
Preferably, the surface of the base sheet is subjected to an easy adhesion treatment. Further, the colored layer, the vapor deposition layer, and the protective layer are removed by etching, leaving a necessary portion, and decorative printing is performed thereon.

In the method for producing an etching foil sheet according to the present invention, which achieves the above-mentioned object, a transparent alkali-soluble coloring layer is formed on a transparent base material sheet made of synthetic resin and having a pliability, and And a metal vapor deposition layer is formed by vacuum vapor deposition of aluminum, and an alkali-soluble protective layer for protecting the vapor deposition layer is formed thereon.
In addition, the present invention forms a transparent alkali-soluble colored layer on a transparent substrate sheet made of synthetic resin and having flexibility, and forms a metal vapor deposition layer by vacuum vapor deposition of aluminum on the transparent layer. Forming an alkali-soluble protective layer that protects the vapor-deposited layer, and then removing the colored layer, the vapor-deposited layer, and the protective layer leaving a necessary portion by alkali etching, and performing decorative printing on the colored layer. Provided is a method for manufacturing a featured decorative foil sheet.

Further, according to the method for producing an etching foil of the present invention, a metal vapor deposition layer is formed by vacuum vapor deposition of aluminum on a flexible substrate sheet made of synthetic resin, and the vapor deposition layer is protected thereon. It is characterized in that an alkali-soluble colored layer which also serves as a protective layer is formed. Further, the present invention forms a metal vapor deposition layer by vacuum vapor deposition of aluminum on a synthetic resin-made substrate sheet having a volatile property, and an alkali-soluble colored layer also serving as a protective layer for protecting the vapor deposition layer thereon. Also provided is a method for producing a decorative foil sheet, characterized in that the vapor-deposited layer and the colored layer are removed leaving a necessary portion by alkali etching, and decorative printing is performed on the vapor-deposited layer. . Yet another etching foil of the present invention, a metal vapor deposition layer having a gold color tint is formed on a synthetic resin-made substrate sheet having flexibility,
An adhesive layer is formed on a surface of the base material sheet opposite to a side where the vapor deposition layer is provided, and a release sheet is stretched on the adhesive layer.

[0009]

[Function] By using an alkali-soluble coloring layer, vapor deposition layer or protective layer, a portion of the vapor deposition layer overlapping the vapor deposition layer is simultaneously removed by alkali etching, and a colorless transparent sheet except for the portions removed by etching. Becomes After that, decorative printing can be performed on it.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a schematic sectional view of a foil sheet according to an embodiment of the present invention. In FIG. 1, 1 is a release sheet, 2 is an adhesive layer, 3 is a base sheet, 4 is a colored layer, 5 is a metal vapor deposition layer, and 6 is a protective layer. The base material sheet 3 is a colorless, transparent sheet made of synthetic resin, and preferably a PET film (polyethylene terephthalate) having excellent strength, heat resistance, chemical resistance, moisture resistance, and dimensional stability is used. , Other, for example, polyethylene, polypropylene,
Plastic films such as polyvinyl chloride, polystyrene, polycarbonate, triacetate, and polyimide can be used according to the purpose.

The surface of the base sheet 3 is subjected to an easy-adhesion treatment in order to improve printability. Especially PET
Although the film exhibits excellent properties as a base sheet as described above, it has poor printability. Therefore, by applying an easy-adhesion process that overcoats the surface that may be printed with a highly adhesive transparent synthetic resin, the printing adhesion (adhesive strength) of offset printing, silk printing, gravure printing, etc. is improved. It is possible to Colored layer 4
Is appropriately formed by gravure printing a required transparent color on the base material sheet 3. Here, in relation to the metal vapor deposition layer 5 to be described later, for example, if the colored layer 4 is made yellow, a golden metallic color is obtained, and if another colored metallic color is used, coloring according to that color is performed. Further, when the purpose is merely silver, the colored layer 4 is omitted or made colorless and transparent.

The transparent coloring ink of the coloring layer 4 is an alkali-soluble one so that it can be removed by alkali etching. A metal vapor deposition layer 5 of aluminum is formed on the colored layer 4, and a protective layer 6 for preventing oxidation of the vapor deposition layer 5 is further provided on the vapor deposition layer 5. The protective layer 6 is substantially the same as the colored layer 4, a paint of the same type as that can be used, and like the colored layer 4 described above, an alkali-soluble one is used so that it can be removed by alkali etching.
If a transparent protective layer 6 having the same color as the colored layer 4 is used, the sheet can be used in the same manner on both sides. still,
When the colored layer 4 is omitted or is colorless and transparent, the protective layer 6 is made colorless and transparent so that it can be used on both sides.
On the other hand, an adhesive layer 2 having high transparency is provided on the opposite surface of the base material sheet 3, and the release sheet 1 is provided thereon. For the adhesive layer 2, a urethane resin, a vinyl chloride resin, an acrylic resin, a silicone resin, or the like is used depending on the purpose of use of the sheet. Here, the urethane-based resin adhesive layer can be removed again.

The thickness of each part described above is, for example, 10 to 15 μm for the release sheet 1 and 15 to 25 μm for the adhesive layer 2.
The base sheet 3 has a thickness of 75 μm, the colored layer 4 has a thickness of 1 to 2 μm, the metal vapor deposition layer 5 has a thickness of 0.045 to 0.05 μm, and the protective layer 6 has a thickness of 1 to 1.
It is 3 μm. Here, as is apparent from the above description, in this sheet, it is considered that the side where the colored layer 4 is located with respect to the vapor deposition layer 5 is the front surface and the opposite side is the back surface. The side with is the front side. Depending on the use of the sheet, the adhesive layer 2 and the release sheet 1 may be omitted and the sheet may be provided as an etchable foil sheet. In the production of such a foil sheet, when gold or other color metallic is used, first, for example, gravure printing is performed on the transparent easy-adhesion-treated surface of the base material sheet 3 by a required transparent color ink, for example, to obtain an alkali. The soluble colored layer 4 is formed.
Then, aluminum is vacuum-deposited thereon to form a metal vapor deposition layer 5. When the colored layer 4 is omitted or is colorless and transparent as described above, the sheet has a silver mirror surface.

Next, the alkali-soluble protective layer 6 is formed on the vapor-deposited layer 5, and then the pressure-sensitive adhesive layer 2 is applied and formed according to the purpose, and the release sheet 1 is stretched to complete. The adhesive layer 2 is formed by forming the colored layer 4, the vapor deposition layer 5, and the protective layer 6 on the opposite surface.
It is also possible to precede the formation of such as. Each of the steps described above can be continuously processed by using a rolled-up belt-shaped sheet. For example, one roll has a width of about 1000 mm × 100 to
It is 200m long. In this foil sheet, the metal vapor deposition layer 5 can be removed by alkali etching which causes less pollution problems. Alkaline etching is done by masking the areas left by etching with resist printing.
It is carried out by etching with a caustic soda solution of about 5%, then neutralizing with an acid, washing with water and drying.

Here, since the coloring layer 4 and the protective layer 6 are alkali-soluble, the portions of the vapor-deposited layer 5 on which the masking has been applied are removed simultaneously by the alkaline etching and the overlapping portions thereof are removed at the same time. Other parts are colorless and transparent sheets. It is possible to remove the vapor deposition layer 4 by etching, leaving necessary portions such as appropriate figures, patterns, characters, etc., and then perform decorative printing by screen printing, offset printing, pad printing or the like on the vapor deposition layer 4. In this case, since the surface of the base material sheet 3 is subjected to the easy adhesion treatment, the printability after etching is also very good. After such etching and decoration, the foil sheet has an adhesive layer 2
Using, the glass plate or a transparent plate such as an acrylic plate or a plastic plate such as a vinyl chloride plate is water-tipped or roller-tipped from the back surface to complete one display plate. Contrary to the above, with this foil sheet, it is also possible to laminate the transparent sheet from the back side in advance, and then carry out etching and subsequent decoration.

Further, when forming the above-mentioned colored layer 4, the colored layer 4 can be designed to have two or more colors in one etching by devising a design such as a multicolor or a tint block. Furthermore, with this foil sheet, the etching step, the decorative printing step, and the processing of the mating material to be bonded can proceed in parallel. In the above description of the display plate in which this foil sheet is attached to the transparent plate using the adhesive layer 2, the transparent plate side is the surface, that is, the adhesive layer 2 of the foil sheet.
In this example, the side with is the front side.
The front and back of the foil sheet are not necessarily limited to this, and are appropriately determined depending on the application, including the case of using both sides described above. FIG. 2 is a schematic sectional view of a foil sheet according to another embodiment of the present invention. Similar to FIG. 1, also in FIG. 2, 1 is a release sheet, 2 is an adhesive layer, 3
Represents a base sheet, 4 represents a colored layer, and 5 represents a metal vapor deposition layer.

In this embodiment, an aluminum metal vapor deposition layer 5 is formed on the surface of the base sheet 3 which has been subjected to the easy-adhesion treatment,
A colored layer 4 which also functions as a protective layer for preventing oxidation is formed thereon. The colored layer 4 is an alkali-soluble transparent colored ink as in the embodiment shown in FIG. 1, and the structures of the release sheet 1 and the adhesive layer 2 are also the same as those in the above-mentioned embodiment. As an example, the base material sheet 3 is colorless and transparent, and the colored layer 4 is yellow and transparent.
Can be a metallic color when viewed from the colored layer 4 side, and a silver metallic color when viewed from the adhesive layer 2 side, and both surfaces of gold and silver can be used. Here, the colored layer 4 is also substantially a protective layer, and when it is made colorless and transparent, it becomes silver on both sides. In such a foil sheet, as in the foil sheet of FIG.
At the same time, the colored layer 4 is removed, and the removed portion becomes a colorless and transparent sheet. After that, the necessary decorative printing is performed.

In this example, in a normal application, the side having the colored layer 4 is the surface side of the base sheet 3, and the adhesive layer 2 is the side.
The side with is the back side and is used by being adhered to the surface of the decorative plate using the adhesive layer 2. Depending on the application of the sheet, the adhesive layer 2 and the release sheet 1 may be omitted in this foil sheet as in the above case, and the foil sheet may be provided as an etchable foil sheet. Further, the base sheet does not need to be transparent, except in the case of using both sides in which the vapor deposition layer 5 is visible from both sides. FIG. 3 is a schematic sectional view of a foil sheet according to another embodiment of the present invention. This example responds particularly when stable conductivity, durability or weather resistance is required,
Copper, brass, or an alloy similar thereto is deposited on the surface of the base material sheet 3 by a sputtering target, an electron beam or the like to form a vapor deposition layer 5, and the adhesive layer 2 and the release sheet are provided on the opposite side of the base material sheet 3. 1 is provided.

In this foil sheet, a golden color can be produced in the vapor-deposited layer 5 by appropriately mixing copper, brass and the like, and the vapor-deposited layer 5 can be formed by etching with an acid or ferric oxide. Can be removed in the shape of. Then, decorative printing is applied as needed, and the adhesive layer 2 is used to be stuck to the surface of a decorative plate or the like for use. The vapor-deposited metal is not limited to the above-mentioned examples, and a colored layer (protective layer) may be formed on the vapor-deposited layer 5 if necessary.

[0020]

As described above in detail with reference to the examples, in the etching foil sheet of the present invention, alkali-soluble ones are used for the colored layer and the protective layer, and the colored layer and the protective layer are formed by alkaline etching of the vapor deposition layer. Since it was also removed at the same time, the portion other than the portion removed by etching becomes a colorless and transparent sheet. Therefore, after that, it is possible to freely perform decorative printing from above. In particular, by making the colored layer yellow, a gold metal color can be obtained, and by etching this, a complicated pattern or the like can be easily formed. Such foil sheets are
It can be suitably used for decorating a board surface of a pachinko machine, decorating a display for a slot machine, or decorating a display of another general game machine. Further, the foil sheet of the present invention can be applied to the fields of electronics, outdoor signboards and the like.

The etchable foil sheet of the present invention has a dimensional restriction such as a shape and a size, a design, an area or a line thickness, as compared with a conventional metal vapor deposition sheet, a heat transfer foil and the like to be contrasted. There are no restrictions, and the harmful effect of pinhole foil powder does not occur. Furthermore, the heat transfer foil cannot be used for a glass plate, but the foil sheet of the present invention is not limited to the plate to be attached including the glass plate. In the foil sheet of the present invention, the foil sheet etching, decoration, and the like, and the mating material processing operation of the sticking target can independently proceed in parallel,
Each work becomes easy, and the work period can be remarkably shortened by performing the decoration work of the foil sheet in parallel with the shop construction and the like. Further, the foil sheet of the present invention can be peeled off from the sticking target plate, which is advantageous in cost when recycling game machines and the like. further,
The foil sheet of the present invention, before being stretched on the sticking target plate, can be handled such as transportation by making a long one into a roll shape, and it is easy to handle and the transportation cost can be reduced. it can.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a foil sheet according to an embodiment of the present invention.

FIG. 2 is a schematic sectional view of a foil sheet according to another embodiment of the present invention.

FIG. 3 is a schematic sectional view of a foil sheet according to another embodiment of the present invention.

[Explanation of symbols]

 1 Release Sheet 2 Adhesive Layer 3 Base Sheet 4 Coloring Layer 5 Vapor Deposition Layer 6 Protective Layer

Claims (14)

[Claims] 1. A transparent colored layer formed on a synthetic resin-made transparent base material sheet having a transparent property, a metal vapor deposition layer formed on the transparent color layer, and a protective layer for the vapor deposition layer formed on the metal color layer. The etching foil sheet, wherein the colored layer, the vapor deposition layer, and the protective layer are alkali-soluble. 2. A metal vapor deposition layer is formed on a synthetic resin-made base material sheet having flexibility, and a transparent colored layer which also serves as a protective layer for the vapor deposition layer is formed on the metal vapor deposition layer, and the vapor deposition is also performed. An etching foil sheet, wherein the layer and the colored layer have alkali solubility. 3. The etching foil sheet according to claim 1, wherein the protective layer is transparent. 4. The etching foil sheet according to claim 2, wherein the base sheet is transparent. 5. The etching foil according to claim 1, wherein an adhesive layer is formed on a surface of the base material sheet opposite to a side where the vapor deposition layer is provided, and a release sheet is stretched on the adhesive layer. Sheet. 6. The etching foil sheet according to claim 1, wherein the surface of the base sheet is subjected to an easy adhesion treatment. 7. The etching foil sheet according to claim 1, wherein the vapor deposition layer is formed by vacuum vapor deposition of aluminum. 8. The color layer according to claim 1, which is yellow.
The etching foil sheet according to any one of 1. 9. The colored layer, the vapor-deposited layer, or the colored layer, the vapor-deposited layer, and the protective layer are removed by etching to leave a necessary portion, and decorative printing is performed thereon. 9. An etching foil sheet according to any one of 8 to 8. 10. A transparent alkali-soluble colored layer formed on a synthetic resin-made transparent base material sheet, on which a metal vapor-deposited layer is formed by vacuum vapor deposition of aluminum, on which a transparent metal layer is formed. A method for producing an etching foil sheet, which comprises forming an alkali-soluble protective layer for protecting the deposited layer. 11. A transparent, alkali-soluble, colored layer formed on a synthetic resin-made transparent base material sheet, on which a metal vapor-deposited layer is formed by vacuum vapor deposition of aluminum, on which a metal vapor-deposited layer is formed. Forming an alkali-soluble protective layer that protects the vapor-deposited layer, and then removing the colored layer, the vapor-deposited layer, and the protective layer leaving a necessary portion by alkali etching, and performing decorative printing on the colored layer. A method for producing a decorative foil sheet, which is a feature. 12. A metal-deposited layer is formed by vacuum deposition of aluminum on a substrate sheet made of synthetic resin and having a storability, and an alkali-soluble colored layer which also serves as a protective layer for protecting the deposited layer. A method for producing an etching foil sheet, comprising: 13. An alkali-soluble coloring layer which also functions as a protective layer for forming a metal vapor deposition layer by vacuum vapor deposition of aluminum on a base sheet made of synthetic resin and having flexibility and which is protected by the vapor deposition layer. Is formed, and after that, the vapor deposition layer and the colored layer are removed by alkali etching to leave a necessary portion, and decorative printing is performed on the removed layer and the colored layer, and a method for producing a decorative foil sheet. 14. A metal-deposited layer having a gold color tone is formed on a synthetic resin-made substrate sheet having a storability, and the surface of the substrate sheet opposite to the side on which the vapor-deposited layer is located. An etching foil sheet, characterized in that an adhesive layer is formed on and a release sheet is stretched thereon.