JPH0736788Y2 - Gold leaf card - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a card having a gold foil on the surface, and particularly, to improve the workability of the card and reduce the cost.

(Prior Art) As a card having a gold foil on its surface, a card having a structure shown in FIG. 3 is conventionally known.

This is two transparent plastic films 2.
The two end portions 2a of 2 are integrally attached to each other to form a bag shape, and the gold foil 3 is housed and sealed in the bag shape to form a gold foil sheet 1. It is bonded and integrated with the core 5 through.

(Problems to be solved by the invention) However, in the conventional gold foil card described above, since the transparent plastic film 2 and the gold foil 3 are not adhered to each other, when the magnetic layer is formed on the upper surface of the gold foil sheet 1, Problems with the magnetic characteristics with the magnetic head and problems with the physical properties of the magnetic layer itself tend to occur.

Further, even when the card is embossed, since the gold foil and the plastic film 2 are not adhered to each other, there is a slight misalignment between them, resulting in poor workability.

For this reason, the application is extremely limited, such as being used as a business card or a low-function card, and it cannot be used as a magnetic card capable of recording various kinds of information.

In addition, the gold foil sheet requires a great deal of skill and experience because two transparent plastic films are formed into a bag shape and gold foil is inserted into the bag, and the number of steps is large and the cost is high, which is not practical. .

(Means for Solving the Problems) The present invention has been devised to solve the problems in the above-mentioned conventional technology and to reduce the versatility including the magnetic card and the cost, and specifically, A gold foil sheet is formed by interposing a gold foil with an adhesive between two films, at least one of which is transparent, and the gold foil sheet is integrated with a core with the transparent film side as a surface. Regarding the gold leaf card to do.

The present invention also forms a gold foil sheet in which gold foil is interposed between two films, at least one of which is transparent, via an adhesive, and the gold foil sheet is provided on both sides of the core with the transparent film side as the surface. It also relates to integrated gold leaf cards.

(Function) Since at least one of the gold foils is interposed between the two transparent films through the adhesive, the two films are integrated with each other, and as a result, the magnetic layer is formed on the surface of the card. Even when formed, the magnetic layer has good stability, and even if the card is embossed, the gold foil is hardly damaged and a clear display portion can be formed.

(Example) In the following, the concrete contents of the present invention will be explained based on an example shown in the drawing. In FIG. 1, 11 and 12 are films, 14 is gold foil, and 15 is a core.

The films 11 and 12 are made of vinyl chloride having a thickness of about 50 μ, but the film is not limited to this, and other plastic films such as polyethylene, polycarbonate, polyester, polystyrene and polypropylene may be used. .

However, when the above-mentioned polyethylene or the like is used, it is necessary to intervene a separate adhesive agent when bonding to the core 15 described later, whereas in the case of vinyl chloride, it can withstand embossing after completion as a card, and the core Since there is no need to interpose an adhesive because of its excellent heat-sealing property with respect to 15, vinyl chloride is most preferably used in this sense.

When using any of the above materials, at least the film 12 on the front surface side of the films 11 and 12 must be transparent, and the subsequent films do not necessarily have to be transparent.

If necessary, the film 12 is printed with an appropriate character or a pattern such as a pattern by an offset or silk screen method.

The gold foil 14 is obtained by spreading pure gold to a thickness of about 0.3 to 0.8 μ by a known spreading means.

Then, the adhesive layer 13 is formed by applying an adhesive to the upper surface of the film 11 and the printed surface of the film 12, respectively, and the adhesive layers 13.13 are made to face each other. The gold foil 14 is sandwiched between the adhesive layers 13.13 and tacked together by an adhesive tack.

Further, the transfer type magnetic tape 16 having a thickness of 10 to 15 μm prepared in a separate step is superposed on the surface side of the film 12 with the adhesive layer side as the contact surface, and at predetermined intervals. Temporary bonding is performed to form the gold foil sheet S.

The temporary attachment of the magnetic tape 16 can be easily carried out by using a silicon rubber roller heated to about 120 ° C. and thermocompression bonding for 0.5 seconds at a pressure of 6 kg / cm ² .

As the adhesive used for forming the above-mentioned adhesive layer 13, for example, a polyester-based two-component curing type adhesive which is a thermosetting resin adhesive obtained by adding an isocyanate as a curing agent to a thermoplastic polymer polyester is used. Conceivable.

On the other hand, the core 15 may be made of vinyl chloride, polyethylene, polycarbonate, polyester, acetate, synthetic paper, or the like, but in general, it is made of the same material as the film 11 in order to prevent warpage due to the difference in heat shrinkage. It is preferable to use a vinyl chloride sheet as the film 11, so that the core 15 has a thickness
It is preferable to use bone white vinyl chloride of about 400 to 600 μm.

The gold foil sheet S is formed by superposing the film 11 on the core 15 and integrally heat-bonding them by hot pressing, and at the same time, the magnetic tape 16 is embedded in the gold foil sheet S so that the surface becomes substantially flat.

The above heat pressing can be carried out, for example, by using a pair of stainless mirror-finished plates and thermocompression bonding at a temperature of about 120 ° C. and a pressure of about 25 kg / cm ^{2 for} about 20 minutes.

Finally, the desired magnetic card containing gold foil can be obtained by cutting into a desired outer diameter.

Furthermore, FIG. 2 shows another embodiment of the present invention.

In this case, use cores 15a and 15
The gold foil sheet S, which has a double-layered structure of b, and has the magnetic tape 16 as the gold foil sheet, and the magnetic tape 16
And the surface of the film 11 of the gold foil sheet S is superposed on the core 15a, and the surface of the film 11 of the gold foil sheet S1 is superposed on the core 15b, and they are integrated simultaneously or sequentially by hot pressing. A magnetic card with gold leaf is formed.

(Effects of the Invention) As described above, the present invention forms a gold foil sheet in which at least one of the transparent films is a gold foil with an adhesive interposed, and the transparent film side of the gold foil sheet is the surface. Since it is integrated with the core, there is no problem in magnetic characteristics even when a magnetic layer such as a magnetic tape is formed on the card, and it can be used as a high-performance magnetic card. It can withstand embossing well and has excellent workability. The gold foil is not damaged by these treatments, and there is no blurring of characters due to misalignment during embossing. be able to.

Further, as compared with the conventional case where two transparent plastic films are formed in a bag shape and gold foil is inserted therein, the workability is remarkably excellent, the cost can be reduced, and the skill is not required.

Further, when the gold foil sheet is formed on both sides of the core as shown in FIG. 2, the design effect of the gold foil can be further improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a gold foil card showing an embodiment of the present invention in a state where each layer is separated, and FIG. 2 is a cross-sectional view of a gold foil card showing another embodiment of the present invention, in which the layers are separated. FIG. 3 is a sectional view of a conventional gold foil card. 11, 12 …… Film, 13 …… Adhesive layer 14 …… Gold leaf, 15 …… Core S …… Gold leaf sheet, 16 …… Magnetic tape

Claims (2)

[Scope of utility model registration request] 1. A gold foil sheet is formed by interposing a gold foil with an adhesive agent between two films, at least one of which is transparent, and the gold foil sheet is integrated with a core with the transparent film side as a surface. A gold leaf card characterized by that. 2. A gold foil sheet is formed by interposing a gold foil with an adhesive between two films, at least one of which is transparent, and the gold foil sheet is provided on both sides of the core with the transparent film side as a surface. The gold foil card according to claim 1, wherein the gold foil cards are integrated with each other.