JPS6220036B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing photo cards such as credit cards.

BACKGROUND ART Various cards such as credit cards, bank cards, and identification cards have been widely used in the past, and technologies have been developed to prevent unauthorized use and tampering by forming a photograph of the owner's face on such cards. .

Examples of ways to put a face photo on a card include engraving the photo, sanding the photo,
There are various methods such as forming a recess in a predetermined part of the card and embedding a photograph in the recess, but each method has its advantages and disadvantages, and none of them are necessarily satisfactory.

The present invention is a card manufacturing method in which a heat-resistant photographic body with a photographic image formed on the back side is embedded in a card base material by heat pressure, and the photographic image can be formed easily and at low cost, and it has good strength. You can get a card with high tamper-proof effect.

The present invention will be explained in detail below with reference to the drawings.

As shown in FIG. 1, a photographic body 1 is attached to a photographic body base 2
A photographic image 3 is formed on the back side of the .
As the photographic body base 2, a transparent heat-resistant synthetic resin film is used. That is, after photo body 1
The material must have heat resistance so that the photographic body base 2 will not be deformed and the photographic image will not be distorted during the process of embedding it in the card base material 5 by applying heat and pressure. During this burying process, the temperature is approximately
Since it is buried under conditions of 150°C, pressure of 150 kg/cm ² , and time of 5 minutes, materials such as polyester, acetate, and polypropylene are suitable as materials that can withstand such conditions. Also, if the thickness of the photographic body base 2 is too thick, the card base material 5 will be damaged when buried.
Since the deformation of the material becomes large, it is not preferable to use a material that is too thick, and a sheet having a thickness of 30 μm to 120 μm is used.

A photographic image 3 is formed on the back side of such a photographic body base 2 to form a photographic body 1. The photographic image 3 may be formed by a photographic method, by printing, or by other methods.
An example of a photographic method is to take a photograph of the face on commercially available color or black and white photographic film.
Develop to form a photographic image. In this case, since the transparent film base on which the photosensitive material layer on which the photographic image of the photographic film is formed is coated becomes the photographic body base 2, a transparent heat-resistant resin such as polyester, acetate, or polypropylene is selected. Used for film-based materials.

As described above, an adhesive 4 is applied to the back surface of the photographic body 1 formed by forming a photographic image on the photographic body base 2, that is, to the surface of the photographic image 3. Adhesive 4 is a hot melt adhesive such as PL Rejucer B74.
(manufactured by Dainippon Ink & Chemicals KK) or the like is used. On the other hand, as the card base material 5, any material can be used as long as it is made of a thermoplastic synthetic resin material that can be molded by heating, but polyvinyl chloride has particularly good moldability and is suitable for embedding the photographic body 1. It is a preferable material for the card base material 5 because it has less influence on the surroundings and less distortion occurs. This card base material 5 is made by adhering oversheets 8, 8 on which printed images 7, 7 are formed by so-called reverse printing to both sides of a center core 6 made of, for example, a bone-white polyvinyl chloride sheet. The printed images 7, 7 display predetermined information such as the purpose of use of the card, the name of the issuing company, and precautions for use.

The photographic body 1 coated with the adhesive 4 as described above is superimposed on a predetermined position on the surface of the card base material 5 as described above, and is placed in a flat-pressure heating press machine to be heated and pressurized. The heating and pressurizing conditions depend on the material of the card base 5, the thickness of the photographic body 1, etc., but the temperature is approximately 130°C.
~160℃, pressure 120~160Kg/ ^cm2 , time 3min~
The photographic body 1 can be embedded in the card base material 5 as shown in FIG. 2 for 15 minutes, and the surface of the card base material 5 and the surface of the photographic body 1 can be aligned.

Since the present invention has the above structure, it has excellent effects as shown below. In other words, compared to the conventional method, forming a photographic image such as a face photograph on a card is simpler with fewer steps, and the photographic image can be easily formed, and the formation of this photographic image is the final process of card issuance. If a press machine is installed at the counter of a credit center or bank, cards with a photo image can be issued at the counter, which is extremely convenient and also eliminates variations in card quality. It can be issued in small quantities and at low cost.

In addition, in the card obtained by the method of the present invention, since the photographic image is coated on the photographic base, the photographic image will not disappear or be damaged by friction, etc., and has high strength suitability, and has a tamper-proof effect. is high.

Further, according to the configuration of the present invention, the photographic image is not distorted due to heating and pressure during embedding, and there is little distortion of the printed image on the card base at the periphery of the photographic body 1.

Example A photograph of a face was taken on a reversal film (manufactured by Fuji Photo Industries KK, thickness: approximately 100 μm), developed and fixed in a prescribed process to obtain a photographic body. Next, the thickness is 560μm
An image was formed by printing on both sides of a bone white vinyl chloride sheet, and an oversheet made of transparent vinyl chloride having a thickness of 100 μm was adhered to both sides to obtain a card base material.

Next, hot-melt adhesive PL Rejusser B74 was applied to the back side of the photographic body obtained as described above using a solvent.
Appropriately thinned with MEK, coated, dried and stacked on the card base material, heated to 150°C using a flat press machine.
It was pressed at a temperature of 150 kg/cm ² at a pressure of 150 kg/cm 2 for 5 minutes, and after cooling for 5 minutes, it was taken out from the press to obtain a card with a photograph.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a cross-sectional view of a photographic body and card base material, Fig. 2 is a cross-sectional view of a completed photograph-embedded card, and Fig. 3 is a plan view of the same. be. 1... Photographic body, 2... Photographic body base, 3... Photographic image, 4... Adhesive, 5... Card base material.

Claims (1)

[Claims] 1 The photo base is polyester, acetate,
Alternatively, the photographic body is made of a transparent heat-resistant resin material such as polypropylene, and a photographic image such as a face photograph is formed on the back side of the base of the photographic body, and a hot melt adhesive is applied to the surface of the photographic image of this photographic body. Then, an oversheet with a printed image formed on both sides of the center core made of bone-white polyvinyl chloride sheet is adhered to a card base material by so-called back printing, and heated and pressed to form a card base. A method for producing a photo card by embedding a photo object in a material.