JPH06219088A - Manufacture of telephone card@(3754/24)registered trademark) - Google Patents

Abstract

PURPOSE:To obtain a telephone card being excellent in durability and giving an impression different from that of a conventional material such as synthetic resin sheet and cardboard by using a metallic foil as a substrate. CONSTITUTION:After paste is applied on one surface of a metallic foil 10 such as non-magnetic stainless steel and a protector paper is stuck on the foil, the metallic foil 10 is cut to the size of a telephone card by laser beam. Then, a magnetic recording layer 60, of which the rear face is polished so that the whole thickness takes a standard value, is stuck on the surface, in which the protector paper is separated from the metallic foil 10. Non-magnetic stainless steel foil such as SUS403 and SUS305 of 20-60mum thickness is used as the metallic foil 10. Printing pattern 40, etching pattern 50, etc., are applied to the surface of the metallic foil 10 on the side opposite to the magnetic recording layer 60. Thus, because the substrate is the metallic foil, the title card is firm and satisfactory in breaking strength and bending strength. Also, the card can be a commodity giving a novel impression, in which a conventional telephone card is lacking, by the surface luster and etching pattern of the metallic foil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a telephone card using a metal foil as a base material.

[0002]

2. Description of the Related Art When using a public telephone, there is an increasing tendency to use a telephone card while avoiding the trouble of inserting coins each time. This telephone card has a laminated structure in which a magnetic recording layer is attached to a base material such as a synthetic resin sheet or cardboard.

With the spread of this telephone card, various improvements have been proposed so far. For example, it has been proposed in JP-A-2-1393, JP-A-2-50897, etc. to form a thermal recording medium so that visible information corresponding to individual information can be easily recorded. Also,
A transferable magnetic sheet provided with an acrylic ester resin-based release agent has been introduced in JP-A-56-134318 as a means for transferring necessary information to a substrate.

[0006] Further, as the design of the telephone card, the PR effect, etc. are enhanced and the commercial value is increased by itself,
A card is used in which a synthetic resin sheet such as polyester or a cardboard is offset-printed or silk-printed on one surface with UV ink and a magnetic recording layer is attached to the back surface.

[0005]

Recently, a telephone card is not only a substitute for cash when making a call, but also by printing on the surface, a souvenir,
It has come to be handled as a product with new added value such as a gift or a PR product. In addition, with the times and diversification of hobbies, novel and more sophisticated telephone cards are required.

In this respect, the conventional telephone card using a synthetic resin sheet or cardboard as a base has good printability on the base, but the impression given by the material of the base is poor. Further, it has poor breakage resistance and bending resistance, and is apt to be unusable when an unexpected force is applied or when the card is inserted into the card insertion slot of the telephone in an incorrect posture.

The present invention has been devised to solve such a problem, and by using a metal foil such as a stainless steel foil as a substrate, a novel feature different from the surface texture exhibited by conventional materials is introduced. It is an object of the present invention to provide a telephone card that gives a great impression and is excellent in durability.

[0008]

In order to achieve the object, the telephone card manufacturing method of the present invention has a striped adhesive on one surface of a metal foil and a protective paper, and then the metal foil It is characterized in that it is cut into a size of a telephone card, and then a magnetic recording layer whose back surface is polished so that the entire thickness becomes a standard value is attached to the surface of the metal foil from which the protective paper has been peeled off.

As the metal foil, non-magnetic stainless steel such as SUS403 and SUS305 which does not affect the magnetic recording layer can be used. In addition, since a punch hole that indicates the frequency of use is opened in the metal foil when using the telephone,
It is preferable to use a material softened by component design, heat treatment, etc.

When the metal foil is too thick, the thickness of the magnetic recording layer attached to the metal foil is restricted because the product thickness of the telephone card is standardized. Also, it becomes difficult to open a punch hole for displaying the telephone usage frequency. vice versa,
If the metal foil is too thin, the waist becomes weak. 20 to 20
It is preferable to use a metal foil having a thickness of 60 μm. It should be noted that it is possible to locally thin the portion where the punch hole for displaying the telephone usage frequency is formed by embossing or etching to facilitate perforation.

Protective paper is glued on one side of the metal foil.
The adhesive applied to the surface of the metal foil for attaching the protective paper is preferably a rubber-based adhesive or the like that forms a flexible adhesive layer. On the contrary, when a strong adhesive layer is formed by using a two-liquid mixed type adhesive, the magnetic recording layer is apt to be cracked due to bending stress frequently applied when the telephone card is used, and it becomes unusable.

The adhesive for sticking protective paper is preferably applied in stripes on the surface of the metal foil so that air bubbles do not remain between the layers when the magnetic recording layer is stuck on the stainless steel foil. Specifically, the width of the part to which the glue is attached is 3 to 7 m.
m, width 0.3-1m between adjacent glue-attached parts
A metal exposed portion of about m is provided. Further, the thickness of the glue adhesion layer is optimally about 10 to 20 μm.

The adhesive adhered to the metal foil does not dry even if it is left for a long time, and exhibits a good adhesive force when the magnetic recording layers are stuck together in a later step. Further, the metal foil covered with the protective paper is easy to handle.

The metal foil to which the protective paper is attached is cut into the size of a telephone card. This cutting is preferably performed with a laser beam so that burrs do not occur on the cut surface. The metal foil cut by the laser beam exhibits a cut surface having rounded edges as if chamfered, and the step of polishing the cut surface can be omitted.

On the other hand, if the metal foil is mechanically cut, burrs are likely to occur on the back side of the cut portion. When the telephone card is inserted into the telephone, the generated burr gets caught in the card insertion slot and causes trouble.
Therefore, an extra step of polishing the cut surface is required.

Further, the metal foil is provided with an appropriate pattern by printing, etching or the like on the surface opposite to the side where the protective paper is adhered. This patterning can be performed either before or after cutting the metal foil into the size of a telephone card. Further, if the surface to which the ink is applied is roughened in advance, the fixability of the ink is improved and a clean printed pattern can be obtained.

A magnetic recording layer, the thickness of which has been adjusted by polishing the back surface, is attached to the treated metal foil so that the total thickness of the telephone card corresponds to the card insertion slot of the telephone. This back surface polishing is also effective in improving the adhesion of the magnetic recording layer to the metal foil. However,
It is necessary to polish the magnetic recording layer to such an extent that the magnetized portion is not damaged.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings. Non-magnetic stainless steel SUS with a thickness of 30 μm as the metal foil of the telephone card base
403 was used. Then, the non-magnetic stainless steel foil wound in a coil shape was rewound and cut into a size easy to paste.

On one surface 11 of the stainless steel foil 10, as shown in FIG. 1, a rubber-based glue 20 having an average thickness of 15 μm was applied in stripes. At this time, the width of one glue adhesion layer 21 is 6 m
m, and the gap 22 between adjacent glue adhesion layers 21 is 0.5.
The width was set to mm. Then, the glue adhesion layer 21 formed in a stripe shape
The protective paper 30 was attached to the stainless steel foil 10 via the. The other surface 12 of the stainless steel foil 10 was mirror-finished in advance.

The stainless steel foil 10 having the protective paper 30 attached thereto was cut into a standard size for a telephone card by a laser beam. Unlike the case of mechanical cutting, the cut surface by the laser beam had edges without protrusions such as burrs.

The other surface 12 of the cut stainless steel foil 10
While flowing water under a pressure of 6 kg,
It was lightly polished for 2 to 3 seconds on an abrasive material provided with 3 μm abrasive grains. By this polishing, the other surface 12 of the stainless steel foil 10 was slightly roughened.

Offset printing was performed on the other surface 12 after polishing using UV ink to form a printed pattern 40. At this time, since the other surface 12 was roughened, the fixing of the UV ink was good and the printing finish was excellent. Also,
An etching pattern 50 was formed on a part of the other surface 12. The etching pattern 50 has a three-dimensional effect, and the printed pattern 4
It had an appearance giving an impression different from 0. (Fig. 2)

One side 11 of the treated stainless steel foil 10
The protective paper 30 is peeled off from the sheet, and the magnetic recording layer 60 is attached as shown in FIG. Here, the slit width is 300μ
The thickness of the telephone card was adjusted by polishing the back surface of the magnetic recording layer 60 in order to make the total thickness of the telephone card 200 to 220 μm corresponding to the card insertion port of the telephone.

That is, the back surface of the magnetic recording layer 60, which has not been subjected to the magnetization treatment, is polished with an appropriate polishing material so that the total thickness of the stainless steel foil 10 and the glue adhesion layer 21 is 200 to 200.
The magnetic recording layer 60 is thinned to 220 μm. As the polishing material at this time, the same abrasive grains as when polishing the other surface 12 of the stainless steel foil 10 were used.

The back surface 61 of the polished magnetic recording layer 60 is
One side 1 of the stainless steel foil 10 with the rubber glue 20 sandwiched therebetween
I pressed it to 1. By the pressing force at this time, the adhesive layer 21 provided in a striped pattern spreads along the one surface 11 and filled the gap 22 between the adjacent adhesive layer 21. As a result, the magnetic recording layer 60 was bonded to the stainless steel foil 10 without bubbles remaining at the bonding interface. (Figure 3)

As shown in FIG. 4, the obtained telephone card 70 has a printed pattern 40 and an etched pattern 50 on the surface.
Was applied, and the contrast between the printed pattern 40 and the etched pattern 50 gave a novel impression that has never been seen before. Also, the punch holes 72 formed along the power scale 71 indicating the power usage could be opened without any trouble by using the conventional telephone.

[0027]

As described above, in the telephone card of the present invention, the magnetic recording layer is formed on the metal foil as the base. Since the base is a metal foil, it has superior breakage resistance, bending resistance, etc. compared to conventional synthetic resin sheets and cardboard, etc. In addition, it takes advantage of the metallic surface gloss and gives the user a strong impression with peace of mind. It becomes a telephone card. In addition, since a pattern having a three-dimensional effect can be provided by etching or half etching, it is possible to impart a unique design property that cannot be obtained by a conventional printed pattern. Thus, according to the present invention, a telephone card having an excellent commercial value can be obtained.

[Brief description of drawings]

FIG. 1 shows a state in which protective paper is attached to a metal foil.

FIG. 2 shows a partial cross section of a metal foil to which protective paper is attached.

FIG. 3 shows a partial cross section of a magnetic recording layer attached to a metal foil.

FIG. 4 shows the resulting telephone card.

[Explanation of symbols]

10 Stainless Steel Foil (Metal Foil) 11 One Side (Magnetic Recording Layer Forming Side) 12 The Other Side (Pattern Forming Side) 20 Rubber Paste
21 Adhesive Adhesion Layer 22 Gap between Adjacent Adhesion Adhesion Layers (exposed metal surface)
30 Protective Paper 40 Printing Pattern 50 Etching Pattern 60 Magnetic Recording Layer 61 Back Side (Laminating Side) 70 Telephone Card 71 Degree Scale 72 Punch Holes

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuaki Masaki 11-1 Showa-cho, Kure City, Hiroshima Prefecture Kure Sales Office, Shinwa Enterprise Co., Ltd. (72) Yuji Horiuchi 8-47 Kuchida Minami, Asakita-ku, Hiroshima City −22

Claims (5)

[Claims] 1. A surface obtained by pasting a striped adhesive on one surface of a metal foil and pasting a protective paper, cutting the metallic foil into a telephone card size, and then peeling the protective paper from the metallic foil. And a magnetic recording layer whose back surface is polished so that the entire thickness becomes a standard value. 2. The method for manufacturing a telephone card according to claim 1, wherein the metal foil is non-magnetic stainless steel. 3. The metal foil according to claim 1 has a thickness of 20 to
A method of manufacturing a telephone card, which has a thickness of 60 μm. 4. The method of manufacturing a telephone card according to claim 1, wherein the metal foil is cut with a laser beam. 5. The method of manufacturing a telephone card according to claim 1, wherein the surface of the metal foil opposite to the side where the protective paper is adhered is patterned by printing, etching or the like.