KR100561289B1 - One-ply magnetic security thread and security papers containing said one-ply magnetic security thread - Google Patents

Abstract

The present invention relates to a security silver wire added with a magnetic material used for the purpose of preventing forgery when manufacturing securities such as securities and receivables and various gift certificates including banknotes and checks, and a security paper including the same. The magnetic layer is formed on one side of the surface, coated with transparent resin, and then the metal layer is formed to manufacture the silver wire, and it is inserted or partially exposed to the inside of the marsh peel at the time of papermaking to provide high-quality security paper to which the magnetic silver wire is given. have.

Particularly, the security hidden line to which the magnetic material is added according to the present invention has improved magnetic protection function and improved surface smoothness of the magnetic layer. In addition, by using a single layer film has the advantage that the workability can be improved by reducing the thickness of the hidden line portion to minimize the bending when loading the product.

Anti-counterfeiting, banknotes, securities, magnetic silver wire, security paper, conductive silver wire

Description

One-ply magnetic security thread and security papers containing said one-ply magnetic security thread}

1 is a magnetic character pattern arrangement of hidden lines according to the prior art.

2 is a magnetic character pattern arrangement of hidden lines according to the present invention.

3 is a cross-sectional view showing a magnetic silver line coated with a metal layer of a double lamination method according to the prior art.

Figure 4 is a cross-sectional view showing a magnetic silver line treated with a resin coating of a single film method according to the present invention.

※ Explanation of code about main part of drawing ※

1, 4-a, 4-b: film 2, 3: magnetic material

5: magnetic layer 6: metal layer

7: resin coating layer

The present invention relates to a single layer hidden line to which the anti-counterfeiting magnetic material is added and a security paper including the same. More specifically, when applying a hidden line to which magnetic material is added to a security paper, the color difference of the front and back surfaces of the hidden line does not occur, and as the thickness of the hidden line decreases, the paper curvature decreases, and the anti-counterfeiting effect is high, so as to identify the authenticity. The present invention relates to a magnetic hidden line having an excellent security element and a security paper including the same.

Conventionally, a method of inserting a stripe-shaped hidden line of 1 to 5 mm has been adopted in documents such as banknotes, securities, and main documents that require security, in order to prevent forgery. Such silver wire is produced by printing small characters on the surface of a transparent synthetic resin film such as polyester and cutting the film to a certain width. The produced hidden line is inserted between the pulp during paper production and used to verify the authenticity of the security paper.

In particular, studies have been actively conducted on silver wire to which magnetic materials are added.

In this regard, Korean Patent Laid-Open Publication No. 2002-55740 discloses a counterfeit magnetic silver wire and a product including the same, which are illustrated in FIGS. 1 and 3.

1 and 3, the patent discloses a magnetic hidden line (FIG. 1) in which letters or figures are patterned with magnetic bodies 2 and 3 on the surface of the transparent film 1, and a surface of the magnetic layer 5 of the hidden line. Magnetic silver wire formed by depositing or applying the metal layer 6 on both sides of the magnetic film of the double lamination method after adhering the transparent films 4-a and 4-b having a thickness of 5 to 30 μm to the film (FIG. 3). Is disclosed.

However, a magnetic silver wire patterned with letters or figures with a magnetic body as shown in FIG. 1 may cause peeling of the magnetic body due to an external impact, and a color difference between the front and back surfaces occurs when depositing or applying a metal layer on both sides of the security paper. There is a disadvantage that the quality is not uniform during manufacturing.

In the case of the silver wire shown in Fig. 3, another transparent synthetic resin film is bonded to the magnetic silver wire as shown in Fig. 1 to make a double film, and then a metal layer is deposited or coated on both sides thereof, and then the magnetic field is deposited. Security paper quality such as color difference between the front and back of hidden line is remarkable, manufacturing cost is increased, manufacturing method is complicated, peeling phenomenon due to double film method and bending occurs when paper is loaded due to the increase of hidden line thickness. Many defects occurred in stability and physical properties.

Accordingly, the present invention, as a result of research efforts to solve the problems of the prior art as described above, by forming a transparent resin coating layer on the magnetic layer and then depositing or applying a metal layer to develop a high-quality security magnetic silver wire made of a single film. The present invention has been completed based on this.

Accordingly, an object of the present invention is to provide a single layer hidden wire to which an anti-counterfeiting magnetic material is added, which can significantly reduce color difference between front and rear surfaces with a simple manufacturing process and low cost, and further improve product quality by preventing product bending due to reduced silver line thickness. It is.

Another object of the present invention is to provide a security paper including the hidden line.

Silver line to which the anti-counterfeiting magnetic material is added according to an aspect of the present invention for achieving the above object:                         

In the silver wire to which the anti-counterfeiting magnetic material is added,

Polyester, polyethylene, polypropylene or polycarbonate transparent synthetic resin film layer;

A magnetic layer partially formed on one surface of the film layer or formed by patterning in a dark letter, outline letter, or figure shape;

Melamine, epoxy, vinyl or urethane transparent resin coating layer formed on the magnetic layer; And

Metal layers formed on the outer layers of the film layer and the coating layer, respectively;

It includes, characterized in that the width of the dark character or outline is 10 ~ 1000㎛.

Silver line to which the anti-counterfeiting magnetic material is added according to another aspect of the present invention for achieving the above object:

In the silver wire to which the anti-counterfeiting magnetic material is added,

Polyester, polyethylene, polypropylene or polycarbonate transparent synthetic resin film layer;

A magnetic layer formed by coating a magnetic material on one surface of the film layer;

Melamine, epoxy, vinyl or urethane transparent resin coating layer formed on the magnetic layer; And

Metal layers formed on the outer layers of the film layer and the coating layer, respectively;

Characterized in that it comprises a.                         

Security paper according to the present invention for achieving the above another object is composed of a single layer hidden line to which the magnetic material is added.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

As described above, in the present invention, there is almost no difference in color between the front and back surfaces of the hidden wire due to the improved magnetic protection function and the improved surface smoothness of the magnetic layer, and the single layer hidden wire having the anti-counterfeiting magnetic material added to minimize the bending when the product is loaded and the security paper including the same Is provided.

The magnetic character pattern of the magnetic hidden line according to the aspect of the present invention is shown in FIG. 2, and a cross-sectional view of the magnetic hidden line is shown in FIG. 4.

In the single layer silver wire according to the present invention, the magnetic material is applied to one surface of the transparent synthetic resin film layers 1 and 4-a to form the magnetic layer 5.

The magnetic layer 5 may be formed by uniformly applying (i) a magnetic material on one surface of the transparent synthetic resin film layers 1 and 4-a or (ii) partially applying the magnetic materials 2 and 3. Or patterned into a pattern such as dark characters, outlined characters or figures composed of 10 to 1,000 μm in width. When the patterned magnetic layer 5 is formed as described above, electrical digital signal processing can be facilitated. At this time, when the line thickness of the outline character or figure is less than 10 μm, there is a limit of detection, and when the thickness exceeds 1,000 μm, the effect of the thin line is insufficient.

Meanwhile, the synthetic resin film used in the present invention includes polyester, polyethylene, polypropylene and polycarbonate. Here, although the thickness of the said transparent synthetic resin film layer is not specifically limited, Preferably it is 5-50 micrometers.

The magnetic material used in the present invention is not particularly limited, but includes hard and non-hard metal magnetic materials having magnetic properties such as iron, nickel, and cobalt.

Next, the transparent resin coating layer 7 is formed on the magnetic layer 5 by performing a transparent resin coating treatment to improve the protection function and the smoothness of the magnetic body. The transparent resin used in the present invention includes melamine, epoxy, vinyl, urethane, and the like, and the thickness of the transparent resin coating layer 7 is not particularly limited, but preferably Is 0.1-5 micrometers.

Finally, the metal layer 6 is more uniformly formed by depositing or applying metal on both sides of the magnetic silver wire on which the transparent resin coating layer 7 is laminated. The metal layer 6 is not particularly limited, but may include not only metals such as aluminum and silver, but also colored pigments and the like as necessary.

As described above, the silver wire of the present invention has a width of about 0.1 to 50 mm, and the diffuse reflection due to light is reduced, so that the color difference between front and back is greatly reduced, so that the anti-counterfeiting effect is increased, so that the authenticity can be easily identified when the product is applied. In addition, by using a single layer film, the thickness of the hidden line portion is reduced, thereby minimizing bending when loading the product, thereby improving workability.

The hidden line of the present invention also provides a high-quality security paper having excellent security by inserting into the marsh peeling or partial exposure method in papermaking papermaking machine, papermaking paper machine or multilayer papermaking machine. The security sheet inserted with the magnetic silver wire according to the present invention has good magnetic strength, so that the authenticity can be easily identified by the device and the color is uniform, thereby preventing counterfeiting. Such security papers include, in particular, securities such as bank notes, checks, bonds, and various gift certificates.

Hereinafter, the present invention will be described in detail with reference to Examples, but the scope of the present invention is not limited thereto.

Example 1

Cobalt-based magnetic materials were additionally patterned with letters or figures of various shapes on one surface of the polyester-based transparent synthetic resin film such that dark lines or outlines had a line width of about 100 μm, and the melamine-based transparent resin was coated on the surface thereof. Next, aluminum metal was deposited on both surfaces to prepare a silver wire to which a magnetic material was added. The silver wire was inserted into the marsh peel in the papermaking paper making machine for the security paper.

Example 2

Cobalt-based magnetic material was evenly applied to one surface of the polyester-based transparent synthetic resin film, and then the melamine-based transparent resin was coated on the surface thereof, and aluminum metal was then deposited on both surfaces to prepare a silver wire to which the magnetic material was added. The silver wire was inserted into the marsh peel in the papermaking paper making machine for the security paper.

Comparative Example 1

Cobalt-based magnetic materials were additionally patterned into letters or figures of various shapes so that dark lines or outline lines of about 10 to 1,000 μm were formed on one surface of the polyester-based transparent synthetic resin film to prepare magnetic silver wires. The silver wire was inserted into the marsh peel in the papermaking paper making machine for the security paper.

Comparative Example 2

Cobalt-based magnetic material is evenly applied to one surface of the polyester-based transparent synthetic resin film, and then the polyester-based transparent synthetic resin film is adhered to the surface thereof to form a double-film method, and a metal layer is deposited on both sides of the film to form a magnetic silver wire. Was prepared. The silver wire was inserted into the marsh peel in the papermaking paper making machine for the security paper.

The physical properties of the magnetic silver wires prepared according to the Examples and Comparative Examples were measured, and the results are shown in Table 1 below.

Example 1 Example 2 Comparative Example 1 Comparative Example 2 Hidden line format ^{* 1} Single film method Single film method Double film method Double film method  Sleeping has exist has exist has exist has exist Weight (mg / 30cm) ^{* 2} 8.6 8.6 10.8 10.8  Thickness (㎛) 16 16 25 (12.5 + 12.5) 25 (12.5 + 12.5) Tensile Strength (kg / f) ^{* 3} 0.5 0.5 0.5 0.5  Elongation (%) 71.8 71.8 80.3 80.3  Color difference none none Occurs Occurs

* 1: width of magnetic silver wire (0.75㎜)

* 2: Magnetic silver wire of 0.75 x 300 mm (width x length)

* 3: When the tensile strength of the double film type magnetic silver wire was measured, the film on one side was shorted at about 0.4, and the film on the remaining part was cut at 0.5.

As described above, the single-layered silver wire according to the present invention adds a magnetic material to one surface of the transparent synthetic resin film, and then coats the transparent resin on the surface thereof to prevent peeling of the magnetic layer and improves the smoothness of the surface. In this case, the color of the front and back surfaces of the silver wire can be kept uniform during metal deposition. In addition, to solve the peeling phenomenon that appeared in the magnetic silver wire of the double-film method according to the prior art, and to reduce the thickness of the hidden line to prevent the paper bending when loading the security paper manufacturing, as well as simplify the manufacturing process and reduce the manufacturing cost It is possible to provide high quality anti-counterfeiting products with high quality through improved production technology.

Claims (6)

In the silver wire to which the anti-counterfeiting magnetic material is added, Polyester, polyethylene, polypropylene or polycarbonate transparent synthetic resin film layer; A magnetic layer formed by partially applying a magnetic material on one surface of the film layer or by patterning it in dark letters, outline letters, or figure shapes; Melamine, epoxy, vinyl or urethane transparent resin coating layer formed on the magnetic layer; And Metal layers formed on the outer layers of the film layer and the coating layer, respectively; Included, the monolayer hidden line with the anti-counterfeiting magnetic material, characterized in that the width of the dark character or the outline is 10 ~ 1000㎛. In the silver wire to which the anti-counterfeiting magnetic material is added, Polyester, polyethylene, polypropylene or polycarbonate transparent synthetic resin film layer; A magnetic layer formed by coating a magnetic material on one surface of the film layer; Melamine, epoxy, vinyl or urethane transparent resin coating layer formed on the magnetic layer; And Metal layers formed on the outer layers of the film layer and the coating layer, respectively; Single layer silver wire is added to the anti-counterfeiting magnetic material comprising a. The single layer hidden line of claim 1 or 2, wherein the magnetic material is a hard or non-hard metal magnetic material having magnetic properties. The single layer hidden wire with the anti-counterfeiting magnetic material according to claim 1 or 2, wherein the width of the silver wire to which the magnetic material is added is 0.1 to 50 mm. A security paper comprising a single layer hidden line to which the magnetic material according to claim 1 is added. 6. The paper of claim 5, wherein the security paper is selected from the group consisting of bank notes, checks, certificates, bonds, and gift certificates.

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