JPS60205828A - Production of magnetic card using metallic plate - Google Patents

Abstract

PURPOSE:To obtain a magnetic card which can be used at a high temperature and withstand large bending stress by applying a hot platen press to form a magnetic stripe and a resin film on the same surface of a metallic plate substrate. CONSTITUTION:An undercoat film 11 is provided on the surface of a metallic plate 10 to improve the adhering performance of the following process, and a magnetic stripe 13 and its holding base layer 13A are formed on the film 11. Then a resin film 12 having the same thickness as the stripe 13 is formed on the entire surface of the plate 10. A resin film part 12A is separated from the layer 13A on the stripe 13 after the film 12 is hardened. Then the hot platen press is applied to set both surfaces of the stripe 13 and the film 12 at the same level. As a result, both the temperature resistance characteristics and the resistance to the bending stress are improved owing to the use of the plate 10. This attains a magnetic card which is free from exfoliation and injuries of the stripe 13 and also practical with high reliability.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic card and a method for manufacturing the same.

BACKGROUND OF THE INVENTION As the range of applications of magnetic cards expands, there is an increasing demand for magnetic cards that can be used even under special usage and environment conditions. For example, a relatively high temperature place C! ;O
There is a growing need for magnetic cards that can withstand use in environments where the card is subject to large bending stress (Cc or higher) and other locations where the card is subjected to large bending stress.

The most commonly used magnetic cards are financial-related puncture cards and credit cards, which conventionally use hard vinyl chloride as their base material. An example of the structure of a conventional magnetic card using hard vinyl chloride as a base is shown in a perspective view in FIG. 1 of the accompanying drawings. This conventional magnetic card has a magnetic stripe 2 on the surface of a hard vinyl chloride base 1.

The magnetic stripe 2 is formed such that the surface of the base 10 and the surface of the magnetic stripe 2 are on the same plane, as clearly shown in FIG. It is embedded in the base 1 as shown in FIG.

The reason why the surface of the magnetic stripe 2 and the surface of the base 10 are made to be the same surface is to improve the reliability of the magnetic card and to improve the appearance. In other words, a magnetic head is used to write data to and read data from the magnetic stripe 2 of a magnetic card, and in order to improve its reliability, it is necessary to improve the head's contact with the magnetic stripe 2. is important.

In order to improve the head touch, it is preferable that the magnetic stripe 2 is completely flat and has no difference in height or unevenness between the magnetic stripe and the surface of the substrate supporting it. In addition, if the magnetic stripe protrudes from the substrate surface with a certain level difference, the magnetic stripe is likely to be peeled off from the substrate, and scratches are likely to occur in the horizontal direction of the step part of the magnetic stripe. However, it cannot be said to be desirable.

For this reason, in conventional magnetic cards, the magnetic stripe 2 is embedded in the base 1 as described above, and in conventional magnetic cards using a vinyl chloride base,
Such embedding processing was performed as follows. First, as shown in the partial cross-sectional view of FIG. 3, a magnetic stripe 2 is provided on the surface of the vinyl chloride substrate 10, and then, with two smooth plates having mirror surfaces facing each other, By heat pressing the vinyl chloride substrate 1 provided with the magnetic stripe 2 by sandwiching it from above and below,
As shown in FIG. 2, the magnetic stripe 2 is hot-pressed into the base 1 so that the surface of the magnetic stripe 20 and the surface of the base 1 are flush with each other. Since the vinyl chloride substrate 1 has a low softening temperature (generally Sθ to 7θaC), such hot press fitting could be carried out very easily using such a hot press.

On the other hand, as mentioned above, in recent years there has been a need for magnetic cards that can withstand use in high-temperature locations and magnetic cards that can withstand large bending stresses. As a magnetic card, the above-mentioned conventional magnetic card using a vinyl chloride substrate is not very suitable. Therefore, in order to create a magnetic card that can be used in high-temperature locations and withstand large bending stress, it may be possible to use a metal plate as the base instead of the vinyl chloride base. Even in magnetic cards that use a metal plate as a base, the surface of the magnetic stripe provided on the base must be flush with the surface of the base for the same reason as for magnetic cards that use a vinyl chloride base. It is desirable that the However, when a metal plate is used as the base, it is extremely difficult to embed a magnetic stripe in the metal plate by simply hot pressing as in the case of the vinyl chloride base described above.

It is also possible to form recesses by etching the surface of the metal plate substrate in advance and embed magnetic stripes into the recesses, but such a method would be expensive and impractical. Away.

OBJECTS OF THE INVENTION In view of the problems of the prior art as described above, an object of the present invention is to provide a magnetic card using a metal plate that can be used at high temperatures and can withstand large bending stresses.

Another object of the present invention is to provide a method for manufacturing a magnetic card using a metal plate as described above.

Structure of the Invention The magnetic card using a metal plate according to the present invention includes a metal plate base,
The metal plate base includes a magnetic stripe and a resin film provided on the surface of the metal plate base, and the resin film is provided on the surface of the metal plate base such that the surface thereof is flush with the surface of the magnetic stripe. It is characterized by the fact that it was formed.

Further, according to the present invention, such a magnetic card using a metal plate is provided by preparing a metal plate substrate, applying a magnetic stripe to the surface of the metal plate substrate, and then applying at least the magnetic stripe to the surface of the metal plate substrate. On the surface of the metal plate substrate other than the portion,
Manufacturing can be achieved by applying a resin film with a thickness equivalent to the thickness of the magnetic stripe and making the surfaces of the magnetic stripe and the resin film evenly spaced by hot plate pressing.

Embodiments Next, the present invention will be described in more detail with regard to embodiments of the present invention based on FIGS. 7 to 7 of the accompanying drawings.

Figures 6 to 6 are schematic partial cross-sectional views showing each state in the manufacturing process of a magnetic card using a metal plate as an embodiment of the present invention, and Figure 7 is a schematic partial sectional view of a magnetic card using a metal plate as an embodiment of the present invention. It is a figure for explaining an example of the manufacturing process of the manufacturing method.

As clearly shown in FIG. 6, a magnetic card using a metal plate according to an embodiment of the present invention has a magnetic strip "13" on the surface of a metal plate base 100 such as a stainless steel plate through an undercoat film 11. is provided, and the surface of the resin film 12 is formed to be flush with the surface of the magnetic stripe 130.

The undercoat film 11 has a metal plate base 10 and a magnetic stripe 13.
This is provided to improve adhesion to the resin film 12, and is not necessarily required if the metal plate substrate, magnetic stripe, and resin film used have good adhesion to each other.

Next, a method of manufacturing such a magnetic card using a metal plate will be explained with reference to FIG. 7 and FIGS.

First, a metal plate 10 such as a stainless steel plate is prepared as a base.
is prepared, and the metal plate 10 is degreased as shown in manufacturing process A in FIG. Generally, the metal plate 10 has oil attached to it, so it is necessary to thoroughly degrease the metal plate 10 using Triclean or the like. Next, as shown in manufacturing process B in FIG. 7, an undercoat film 11 is applied to the surface of the safe board 10.

As described above, this undercoat film is for improving the adhesion between the metal plate 10 and the magnetic stripe 13 and resin film 12 that will be applied later. The method of applying the undercoat film is not particularly limited, but a roll method or the like may be used. still,
As mentioned above, step B of applying the undercoat film can be omitted by selecting a material or adhesive for the magnetic stride and resin film provided on the metal plate that has good adhesiveness to the metal plate. In this example, in step B, undercoating was performed using a roll method.

Next, a step C is started in which a magnetic stripe 13 is provided on the surface of the metal plate substrate 100 on which the undercoat film 11 has been applied. In this step C, the state in which the magnetic stripe 13 is applied is changed to the seventh
Shown in the figure. In Fig. DA, reference number 13A is
It shows the pace layer that holds the magnetic stripe,
This paste layer 13A is separable from the magnetic stripe 13, and is made of, for example, a polyester film.

Next, as shown in the manufacturing process of FIG. 7 and briefly shown in FIG. A membrane 12 is applied.

The material of this resin film 12 is a mixture of acrylic and urethane resins. The method for forming this resin film 12 is as follows:
Various methods are considered, for example, roll coating method, spinner one method, per coating method, etc., and finally the magnetic stripe 1
Any material that can form the resin film 12 having the same thickness as No. 3 may be used. In this example, the formation of the resin film 12 in the process was carried out using a spinner using a mixed solution of acrylic and urethane resins. In FIG. S, reference number 12A indicates magnetic stripe 130 pace #
The resin film 120 portion applied on 13A is shown.

Then, as shown in manufacturing process E in FIG. 7, the coating film applied in the process is dried. In this process, the solvent in the paint film is evaporated, and the paint film (mixture of acrylic and urethane) is
Curing is performed. Note that the curing is preferably carried out by drying to the extent that it is not completely cured, in order to facilitate the flush processing using a hot plate press (hot-cold press), which will be described later.

Next, as shown in manufacturing process F in FIG. 7, the paste layer 13A on the magnetic stripe 13 is peeled off.

At this time, the resin film portion 12A on the paste layer 13A is also separated from the resin M12 and removed. This state is almost equivalent to the state schematically shown in FIG. 6, but the surface of the magnetic stripe f13 and the surface of the resin film 120 cannot be said to be ideal surfaces. In particular, the surface of the resin film 120 remains uneven due to the flow of the resin during formation.

Therefore, as shown in manufacturing process G in FIG.
0 surface height and solidify. 1. In this embodiment, a method of pressing with a mirror-finished hot plate was adopted as the manufacturing process]-j. According to this method, the surface of the resin film 120 and the surface of the magnetic stripe 130 are easily smoothed, and
The adhesive strength between the metal plate base 10 and the undercoat film 11 is strengthened,
The adhesive force between the undercoat film 11, magnetic stripe 13, and resin film 12 is also strengthened. After completing the above steps, in the manufacturing process H shown in FIG. 7, the metal plate base is punched out to an appropriate size, thereby obtaining a magnetic card using a metal plate of a desired size.

In the above-mentioned manufacturing steps 3 and 3, the resin film was applied by applying and drying a resin solution, but this resin film was formed using a polymer film, for example, a hard vinyl chloride film, a polyurethane film, etc. The magnetic stripe may be applied by laminating the surface of the metal plate other than the area on which the magnetic stripe is applied. The thickness of the polymer film used in this case is also equivalent to the thickness of the magnetic stripe, and if the thickness of the magnetic stripe is lθ~30μ, then /
θ~30μ.

In addition, since we have explained above about the manufacturing method of processing the surfaces of the magnetic stripes F13 and the resin film 12 to be on the same surface, we have not described the design printing process.
There are three methods for this design printing process: 1st
In this method, the ink used before and after the undercoating step B or for design printing is also used as the undercoat agent used in the step B.

In the first method, design printing is performed after the magnetic stripe application step C. In the third method, a design is printed directly on the resin film 12 after the surface processing step G is completed.

Effects of the Invention The magnetic card using a metal plate according to the present invention has better temperature resistance than conventional magnetic cards using a hard vinyl chloride base or other polymer bases, and has greater resistance to bending stress. That's conventional.

It is also suitable for special applications in harsh environments. In addition, with the structure of the magnetic card of the present invention, even if the base is a metal plate, it is extremely easy to make the surface of the magnetic stripe and the surface of the resin film the same surface, and it is possible to make the magnetic card without increasing the cost. It is possible to completely eliminate the risk of peeling off the stripe or damaging the magnetic stripe, making it possible to provide a practical and reliable magnetic card. Furthermore, in the present invention, the thickness of the resin film may be equal to the thickness of the magnetic stripe, which is 70 to 30 μm, so that the magnetic stripe surface and the resin leg surface can be made to have the same thickness without making the resin film thicker than necessary.
It can be easily compounded.

[Brief explanation of the drawing]

Figure 1 of the accompanying drawings is a perspective view showing a general magnetic card;
FIG. 2 is a partial sectional view taken along the X-Y line in FIG.
1, 3 and 6 are schematic partial cross-sectional views showing respective states in the manufacturing process of a magnetic card using a metal plate as an example of the present invention, and FIG. FIG. 3 is a diagram for explaining an example of a method for manufacturing a magnetic card. 10...Metal plate base, 11...Undercoat film, 12...Resin film, 13...... Magnetic stripe, 13A...
・・・・・・Base layer Fig. 1) Fig. 2 Fig. 3 Fig. 4 Fig. 5

Claims (9)

[Claims] (1) comprising a metal plate base, a magnetic stripe and a resin film provided on the surface of the metal plate base; the resin film is arranged such that its surface is flush with the surface of the magnetic stripe; A magnetic card using a metal plate, characterized in that the card is formed on the surface of the metal plate base. (2) The magnetic card using a metal plate according to claim (1), wherein the thickness of the resin film is equivalent to the thickness of the magnetic stripe. (3) Prepare a metal plate substrate, apply a magnetic stripe to the surface of the metal plate substrate, and then apply the thickness of the magnetic stripe to at least the surface of the metal plate substrate other than the portion to which the magnetic stripe is applied. A method for manufacturing a magnetic card using a metal plate, characterized in that a resin film of the same thickness is applied, and the surfaces of the magnetic stripe and the resin film are made flush with each other by hot plate pressing. (4) The magnetic stripe has a peelable base layer on the upper surface, and the resin film is applied to the surface of the metal plate substrate including the surface of the base layer of the magnetic stripe, and then The method for manufacturing a magnetic card using a metal plate according to claim (3), wherein the base layer is peeled off from the magnetic stripe. (5) The resin film is provided by applying and drying a resin solution so that the thickness after drying is equivalent to the thickness of the magnetic strip drive. Or a magnetic card using a metal plate as described in item +4). (6) Use of a metal plate according to claim (5), wherein the surface of the magnetic stripe and the resin film are made flush with each other by the hot plate press before the resin film is completely cured. magnetic card. (7) The resin film is provided with the magnetic stripes 1 to 1.
The method for manufacturing a magnetic card using a metal plate according to claim 3, which is provided by laminating a polymer film on the surface of the metal plate substrate other than the portion where the metal plate is attached. (8) Before applying the magnetic stripe and the resin film,
Claims (3) to (7), wherein an undercoat is applied to the surface of the metal plate base to improve adhesion between the magnetic stripe and the resin film and the metal plate base. A method for producing a magnetic card using a metal plate according to any one of the above. (9) Before applying the magnetic stripe and the resin film,
Claim No. 3, wherein the metal plate substrate is degreased.
A method for manufacturing a magnetic card using a metal plate according to any one of items 1 to 8.