JPH0534954Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is typified by an identification card that has been subjected to verification procedures such as a photograph of the user's face or a code number to identify the user. It concerns plastic cards.

[Conventional technology]

Traditionally, plastic cards have been widely used in various fields, including identification cards, cards for banks and post offices, cash machine cards, credit cards, and fuel cards for gas stations. has been done.

The above-mentioned plastic cards display general information data on the card, that is, colors, designs, characters, etc., which are common to each issuer or common to cards of the same type by the issuer, by printing or other means. , specific information data, that is, holder recognition data (eg, name, date of birth, affiliation, date of issue, expiration date, specific symbol, etc.) are displayed.

As a means of displaying the above-mentioned specific information data, since multiple reproduction methods such as printing cannot be used because individual data is handled, it is necessary to prepare individual copies with the owner recognition data printed on them. It has been used printed on tack paper known as .

The term tack paper referred to here refers to tack paper with a thickness of 60 to 100 microns laminated to a release paper using an ordinary adhesive. It is possible to make a thin one with a thickness of about 50 microns coated with adhesive, but it is not only expensive, but because it is paper, it discolors due to the heat applied during lamination, is opaque, and is difficult to strain. Because the tack paper is weak, wrinkles and curls occur when pasting the tack paper onto the card base material, making it difficult to quickly and flatly paste the paper, making it difficult to increase work efficiency and resulting in inconvenience. Since many non-defective products are produced, it is unsuitable as a tack base material for cards.

However, since good materials with excellent printability and heat resistance are not readily available, it is currently necessary to use tack paper.

In addition, when manufacturing cards, conventionally,
Generally, specific information data is printed on the above-mentioned tactical paper using a kanji printer, the printed tactical paper is pasted at a predetermined position on the surface of the card base material, and the card is covered with a plastic overfilm and then enclosed. It was hot.

In the case of the above-mentioned plastic cards, a highly transparent plastic film is usually used for the overfilm, which prevents stains and scratches on the verification means such as face photographs, provides good results in terms of durability and storage, and protects the film surface. Although it is said that the slipperiness is good and the feeling of use is good, there are problems with the structure of the card and the material properties, and a solution to this problem has been strongly desired.

[Problem that the invention attempts to solve]

The first problem is that polyvinyl chloride resin, which is made by laminating a single sheet or usually two sheets together,
The surface of a card base material such as polyester resin or polystyrene resin is sealed with a tack paper based on paper, which is a foreign material, and heated to around 150 degrees where the polyvinyl chloride resin, which is the main component of the card base material, fuses. When heated and thermally laminated, Tatsuku paper changes color to brownish brown due to the heat, causing the paper's original white background to disappear, resulting in the disadvantage that letters and designs on Tatsuku paper lose contrast with the base and become unclear.

The second problem is that because thick tack paper is inserted between the overfilm and the base material, distortion occurs due to stretching and warping, so the letters and numbers themselves, which are the printed parts, are distorted. Not only are the characters and numbers distorted, making them look unsophisticated and unpleasant, but there have also recently been cases where OCR reading, which is often used to verify and identify cards, has caused incorrect readings.

Furthermore, if the above-mentioned distortion occurs in the face photograph, the owner may feel disgusted and the photograph may be judged to be a different person during verification or identification, making it impossible to fully demonstrate its original identification function. It had the following drawback.

In addition, due to the increased number of defective products in manufacturing,
This caused a major problem in that the defective rate increased and it became difficult to secure good products.

The third problem is that since the tack paper is opaque, there is a difference in color between the surface of the card base material to which the tack paper is pasted, and moreover, due to the discoloration of the tack paper, In addition to the color inconsistency, it was inevitable that the card design would create a sense of discomfort due to the fact that the tack paper portion and the main surface of the card base did not harmonize.

The fourth problem is that plastic cards
Despite its small surface area, usually the size of a business card,
The problem is that the design space is limited because the opaque tack paper that is pasted takes up a large area.

[Means for solving problems]

The present invention is a plastic card that solves the problems associated with the prior art by enclosing a thinner, printable, smooth, and transparent tack film instead of the tack paper. be.

In other words, it has a structure that allows for efficient production of good quality cards, has a good usability, and even when enclosed with tatsuku film printed out by a kanji printer, it is a distinctive transparent tatsuku film, so thermal lamination is not necessary. To provide a plastic card that does not sometimes discolor, does not cause printing defects, does not look strange in terms of card design, and can fully utilize the limited surface area for printing, etc. It is something to do.

Specifically, the specific data is printed at the desired position on the main surface of the plastic substrate on which general information data is displayed, with a thickness of approximately 30 to 60 microns, an adhesive is applied to one side, and the entire surface is printed. The film is coated with a transparent tack film that has been subjected to either or both of chemical treatments such as anchor coating and corona discharge treatment, and physical treatments such as unevenness (matte) processing, and the base material is PET (polyethylene terephthalate). This is a plastic card that is sealed inside a film material by thermal bonding.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

The drawings show an identification card which is an example of a plastic card, and FIG. 1 is an explanatory diagram of the inside of the card.
Figure 2 is a plan view showing the outline of the card, Figure 3 is a sectional view taken along line A-A in Figure 2, Figure 4a is a plan view of an identification card, and Figure b is a conventional identification card. A top view of the card is shown.

1a and 1b are mainly base materials exemplified when laminated as a center core, and materials include polyester resin, polyvinyl chloride resin, polystyrene resin, polycarbonate resin, polyacrylic resin, polyolefin resin, etc. A sheet-like synthetic resin or a laminate is preferable, and although not shown in the drawings, other material such as cardboard, aluminum, copper and its alloys, or a metal plate (foil) such as stainless steel may be suitably used for the base material 1b. Can be used for Furthermore, the center core cannot be used with the resin alone.

The key is to make sure that the general information data (e.g., issuer's indication, certification text, etc.) 5 and other matters (e.g., face photo) are suitable for printing, so that it can be easily folded and not easily damaged. It is important that the material is mainly made of plastic.

Reference numeral 2 denotes a transparent tack film that is thermally laminated to the main substrate 1a.

As a general rule, PET (polyethylene terephthalate) transparent film is used as the material for the transparent tack film.

PET has high transparency, excellent heat resistance, smoothness, wrinkle recovery properties, and tensile strength, making it the most suitable material for the transparent tack film of the present invention.

However, even with other materials, the transparency is high;
The material is not limited to PET, as long as it has a melting point significantly higher than that of the base material, has excellent heat resistance, does not change color due to heat, and can easily be made suitable for printing.

The transparent tactical film used in this invention is PET
It is a transparent plastic film coated with an adhesive on one side (back side), and as mentioned above, it is much thinner than the known opaque tack paper, which has a thickness of 80 to 100 microns and has been commonly used. It is appropriate to have a thickness of about 30 to 60 microns.

Due to its characteristics, plastic film can be made to the optimum thinness by stretching, and PET film in particular has the above-mentioned properties (excellent heat resistance, does not discolor easily, The properties (high tensile strength, stiffness, and good wrinkle recovery properties) are sufficiently maintained.

Regarding the surface properties of this transparent tack film, in order to improve the toner fixability of kanji printers and have good printing suitability, the surface is formed into a matte shape by sandblasting as an additional process, or by anchor coating or corona discharge. It is desirable to apply either or both chemical treatments such as

The adhesive of the transparent tack film 2 is not limited to the application of an adhesive, but any known pressure (adhesion) type or heating (adhesion) type may be used as long as the above conditions are met.

3 is specific data that is printed in advance on the transparent tactical film 2, such as holder identification data, and by printing a bar code or B font character suitable for OCR reading in this data as an identification symbol or identification signal. , machine identification becomes possible.

As for the size of the transparent tack film 2, since transparency is an essential condition, the base material 1a is
The size can be arbitrary as long as it fits within the base material main body 1a, provided that about 5 mm of the area that can be directly bonded to the over film is left around the entire periphery of the base material 1a.

Therefore, although FIG. 4a shows the case where the transparent tack film 2 is set to a size that does not cover the photograph of the face, it may be made to cover the photograph if necessary.
There is no problem with it looking through from the outside.

4 is a known and commonly used overfilm material.

As an example of the plastic card of the present invention used as an identification card that is approximately the same size as the current driver's license in Japan, the thickness is shown based on Figure 3. 0.13mm each, 0.25mm each for base material 1a and 1b
mm, and the transparent tack film 2 is in a state of being fused between the base material main body 1a and the over film material 4 at the time of thermal adhesion, as shown in the illustrated example.

〔effect〕

The present invention, which has the above-mentioned structure, firstly uses a PET transparent film as the base material for the tactical film enclosed in the card, performs the above-mentioned additional processing to make the surface suitable for printing, and has an adhesive on the back surface. Since it is formed on a transparent tack film coated with an agent, even if it is sealed and heat-fused between the card base material and the over film, the tack film will not discolor or deteriorate due to heat at the fusion temperature of the card base material. Therefore, the transparency of the base material and the clarity of characters can be maintained.

Second, the transparent tack film is extremely thin (approximately 30 to 60 microns), so as can be seen from Figure 3, it is attached to the base material 1a by thermal lamination during card creation. Since they are immersed and fused, they are integrated without any stretching phenomenon, and the finished card has a smooth surface with no irregularities.

In addition, there is a certain physical limit to how thin conventional paper can be made, but since paper film is a plastic film, it can be stretched to an extremely thin thickness of 30 to 60 microns as in the present invention. can be easily obtained, it is possible to avoid the distortion caused to the printed part mainly on the base material due to the thickness of the base material, and it is possible to improve the yield rate in manufacturing.

Thirdly, since the transparent tack film 2 is a transparent body, even if it is laminated to the base material, the transparency is not impaired, so there is no restriction on the card design, and the limited surface area of the card can be used. This makes it possible to incorporate more necessary data than ever before by making effective use of the information.

Fourthly, by using the transparent film that has been subjected to the above-mentioned additional processing that provides good printing suitability, it can also be used to create OCR-readable cards on which barcodes, B font characters, etc. are printed.

[Brief explanation of the drawing]

The drawings show an identification card, which is an example of a plastic card.
The figure is a plan view showing the outline of the card, Figure 3 is a cross-sectional view taken along the line A-A in Figure 2, Figure 4a is a plan view of an ID card, and Figure b is a conventional ID card. FIG. 1a, 1b... Base material main body, 2... Transparent tactical film, 3... Specific data, 4... Over film material.

Claims (1)

[Scope of utility model registration request] A plastic base material with general information data printed at a desired position on the main surface, with a thickness of approximately 30 to 60 microns, on which specific data is printed, an adhesive is applied to one side, and an anchor coat is applied to the entire surface. Chemical treatment such as corona discharge treatment and/or physical treatment such as texture (mat) processing are applied, and the base material is PET.
A plastic card made by enclosing a transparent tactical film made of polyethylene terephthalate (polyethylene terephthalate) onto the inner surface of an over-film material by heat lamination.