JPH07309089A - Manufacture of card - Google Patents

Abstract

PURPOSE:To provide a method for manufacture of a card wherein a center core and an over sheet can be thermally fused to each other irrespective of any kind of a printing ink. CONSTITUTION:A pattern printed layer 3 and a character printed layer 4 exist respectively on one and the other faces of a center core 1. A thermoplastic synthetic resin adhesive layer 6 is applied onto each printed layer face. Thereafter, both faces are covered by an over sheet 6 to compose a card.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a magnetic card or IC card used for cash cards, credit cards, ID cards and the like.

[0002]

2. Description of the Related Art Today, various cards are used, which is exactly what is called a card society. Most of the cards currently used are magnetic recording type magnetic cards, but as next-generation cards, IC (Integrated Ci)
IC cards with built-in rcuits) have also appeared. These cards have colorful prints designed by the issuer. Not only the design but also the printing finish shows the image of the publisher, so how cheap
The issue is how to print with high quality.

A conventional card is shown in FIGS. 2 and 3. , Fig. 2
2A and 2B are views showing a configuration of a conventional card, FIG. 2A is an exploded perspective view, and FIG. 2B is a sectional view. As shown in FIG. 2A, the conventional card is made of a transparent thermoplastic synthetic resin in which both sides of the center core 1 of the white thermoplastic synthetic resin, which is the base material of the card, serve as protective materials for the card surface. It is covered with an oversheet 2 which is a film. This card is assembled by printing an ink of a thermoplastic synthetic resin on the adhesive surface of either the center core 1 or the oversheet 2, printing it, and then applying heat and pressure to heat-bond the adhesive surfaces to each other. . In FIG. 2A, printing is performed on the center core. As shown in FIG. 2 (b), the center core 1 has a pattern printing layer 3 printed on the front surface using a thermoplastic synthetic resin ink and a character printing layer 4 printed with a card description on the back surface.
And both printing surfaces are covered with the oversheet 2. The members constituting the card of FIG. 2 are all made of thermoplastic synthetic resin including ink, so that they have good heat-sealing properties and do not peel off.

3A and 3B are views showing the structure of another conventional card. FIG. 3A is an exploded perspective view and FIG. 3B is a sectional view. FIG. 3 shows a case where an acrylic resin or phenol resin, which is a thermosetting synthetic resin, or an ultraviolet curable offset ink is used as the printing ink. When printing is performed using a thermosetting synthetic resin ink, the printing layers 3 and 4 and the thermoplastic synthetic resin oversheet 2 are not heat-sealed, so that the entire surface is not printed and the end portion of the card is about 1 mm.
After printing while leaving the degree as the adhesive part 5, the adhesive part 5 at the end of the card is heat-fused to be assembled by heat and pressure.
Reference numeral 3 is a pattern print layer, and 4 is a character print layer.

[0005]

Among these conventional cards, the card shown in FIG. 2 is limited to a screen printing method, a gravure printing method, and a relief printing method, which have a low printing quality level and a high cost. Cannot print. In offset printing using PS plates, which is currently the mainstream of high-quality color printing, the main component of the ink is a thermosetting or UV-curable synthetic resin, so printing on the entire surface of the card results in a center core and oversheet. There is a drawback in that the heat fusion cannot be performed, and as shown in FIG. 3, it is necessary to print by leaving the adhesive portion at the end of the card, and the entire surface of the card cannot be printed.

An object of the present invention is to provide a method of manufacturing a card which is capable of high-quality color printing at low cost and without being restricted by design.

[0007]

That is, according to the present invention, a center core, which is a card base material made of a thermoplastic synthetic resin, and an oversheet, which is a protective material for the card surface, are heated and pressed to bond them to each other. In the method of manufacturing a card by heat-sealing the surface, the center core, the adhesive sheet of thermoplastic synthetic resin is applied to the printed surface printed on the adhesive surface of any one of the oversheets, and the adhesive layer After the formation of the above, the center core and the oversheet are heated and pressed to heat-bond their mutual adhesive surfaces to each other to assemble the card.

[0008]

[Function] Since the adhesive layer of the thermoplastic synthetic resin is formed on the printed layer on the adhesive surface of either the center core or the oversheet, the printing ink is a thermosetting or ultraviolet curable synthetic resin. Even if there is heat fusion by heat and pressure, a high-quality color printing method free from design restrictions is possible.

[0009]

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows the structure of a card produced by the method of the present invention. FIG. 1A is an exploded perspective view, and FIG.
Is a sectional view.

First, an adhesive made of a thermoplastic synthetic resin to be applied on the printing layers 3 and 4 was prepared. This adhesive must be transparent, adhere well to the print layer, do not deteriorate the print quality, and have good coating workability.

A thermoplastic synthetic resin adhesive satisfying the above conditions could be obtained with the following composition.

A vinyl chloride / vinyl acetate / vinyl alcohol copolymer 30 wt% cyclohexanone 40 wt% toluene 30 wt%.

Next, as shown in FIGS. 1 (a) and 1 (b), UV curable ink was used to print on both surfaces of the center core 1 of white vinyl chloride. Four-color pattern print was printed on the front side, and black characters were printed on the back side. Reference numeral 3 is a pattern print layer, and 4 is a character print layer.

After irradiating ultraviolet rays to cure the ink and finish the printing, the above-mentioned thermoplastic synthetic resin adhesive is applied on the printing surface by the silk screen printing method at a temperature of 50 ° C.
An adhesive layer 6 of thermoplastic synthetic resin was formed on the printing surface under the condition of time of 10 minutes.

Next, the oversheet 2 made of transparent vinyl chloride was superposed on both sides of the core sheet and sandwiched between two mirror-finished stainless steel plates, the temperature was 140 ° C., the pressure was 25 kg / cm ² , and the time was 20 minutes. The center core and the oversheet were heat-sealed by heating and pressing under the conditions.

The heat-sealed laminate was punched out using a die to complete a card.

As a result of a prescribed peel test of the completed card, no peeling of the oversheet was observed.

In this embodiment, an ultraviolet curable ink is used for the center core, the ink is irradiated with ultraviolet rays to cure the ink, and then the thermoplastic synthetic resin adhesive is applied.
An adhesive may be applied in a state where the ink before being irradiated with ultraviolet rays is uncured, and then the ink may be cured by being irradiated with ultraviolet rays and then heated to form an adhesive layer. With this method, a card having higher peel strength can be obtained.

[0019]

According to the card manufacturing method of the present invention, even if the printing ink is a thermosetting or UV-curable synthetic resin, heat fusion can be performed by heating and pressurizing, so there is a design limitation. High-quality color printing that is not affected by printing is possible.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a card of the present invention. FIG. 1A is an exploded perspective view. FIG.1 (b) is sectional drawing.

FIG. 2 is a block diagram showing a conventional card. FIG. 2A is an exploded perspective view. FIG. 2B is a sectional view.

FIG. 3 is a block diagram showing a conventional card. FIG. 3A is an exploded perspective view. FIG.3 (b) is sectional drawing.

[Explanation of symbols]

 1 Center core 2 Over sheet 3 Picture print layer 4 Character print layer 5 Adhesive part 6 Adhesive layer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G06K 19/077

Claims (1)

[Claims] 1. A card to be assembled by heating and pressing a center core, which is a card base material made of a thermoplastic synthetic resin, and an oversheet, which is a protective material for the surface of the card, and heat-bonding the adhesive surfaces to each other. In the manufacturing method, the center core is printed on one of the adhesive surfaces of the oversheet, the adhesive of thermoplastic synthetic resin is applied on the printed surface to form an adhesive layer, and then the center core is formed. And a method of manufacturing a card, characterized in that the above-mentioned oversheet is heated and pressed to heat-bond the respective adhesive surfaces to each other and assembled.