KR100587627B1 - Two-sidedness of different anti-counterfeiting features and preparing method thereof - Google Patents

Abstract

The present invention relates to a security paper with different characteristics of front and back surfaces, and a method for manufacturing the same. In the paper-based papermaking machine for manufacturing and bonding multilayer paper, a paper yarn, a pigment, By selectively adding additives such as dyes and silver plates to differentiate front and back characteristics, when the final paper is produced, the front and back surfaces are observed differently.

According to the present invention, by providing different characteristics on the front and back surfaces of security paper such as banknotes and check paper, security paper such as passport paper, gift certificate paper, etc., it is possible to obtain excellent anti-counterfeiting effect, and also easily determine the authenticity. can do.

Multi-layer, security paper, front and back property, lamination method, additives, color yarn

Description

Two-sidedness of different anti-counterfeiting features and preparing method etc.

1 is a cross-sectional view of a security paper by a lamination method having a dichroic color yarn on the front and back surfaces according to the present invention.

FIG. 2 is an enlarged plan view of a high basis weight paper to which a single color yarn is applied, which is composed of a surface layer in the security paper of FIG. 1.

FIG. 3 is an enlarged plan view of a low basis weight paper composed of a single color yarn and a dichroic yarn mixed with a backing layer in the security paper of FIG. 1.

4A and 4B are image photographs of front and rear differentiation security papers to which dichroic color yarns according to the present invention are applied.

※ Explanation of code about main part of drawing ※

1: Cross section of high basis paper 2: Cross section of low basis paper

3: color yarn 4: dichroic color yarn

5: high basis weight paper plane 6: low basis weight paper plane

The present invention relates to a security paper with different front and back characteristics and a method of manufacturing the same. More specifically, by providing different characteristics to the front and back surfaces of paper, especially securities such as banknotes and check papers, security papers such as passport papers, and gift certificate papers, it is easy to determine whether the authenticity is excellent. The present invention relates to a security paper and a method of manufacturing the same having different front and back characteristics to obtain a forgery prevention effect.

Conventional security paper is generally mixed with fillers, pigments, dyes and other reactive chemicals by adding 1 to 4 kinds of color yarns into a single paper mixing tank, for example, a mixing chest, when forming a paper of a high basis paper and a low basis paper. After the finished material was prepared, the paper was manufactured so that the same color yarn, color, and other materials were displayed on the front and back surfaces. However, such a security paper has a disadvantage in that it is easy to forge because the characteristics of both sides are observed to be the same in banknotes, securities, main documents, etc., where security is required.

In this regard, Korean Patent Laid-Open Publication No. 99-73638 discloses a color copper silver yarn and a method for manufacturing a blended paper thereof. Specifically, a method for producing color yarns mixed in the production of security paper such as banknotes and check papers has been described, and a method of dyeing fiber yarns with color copper and a method of mixing these color yarns with a paper-making material. However, the paper produced by the patent is produced in the form of randomly mixed color yarn on the front and back of the paper, both sides have the same effect.

Meanwhile, Korean Patent Laid-Open Publication No. 2002-46382 introduces a dichroic fiber, a method of manufacturing the same, and a security and a passport using the same, and manufactures color yarns mixed in the manufacture of security paper such as banknote paper, check paper, and passport paper. It is disclosed that the dichroic yarn is manufactured by the method. However, the patent also has the same effect on both sides by randomly mixing the manufactured yarn to the front and back of the paper.

Meanwhile, Korean Unexamined Patent Application Publication No. 2000-17792 discloses a single-sided pattern weaving method and a device thereof, and discloses a single-sided pattern weaving method in which a pattern by various color yarns can be formed only on one side of a knit, which is a kind of cloth. have. The effect of the resultant according to the above patent may be similar to the present invention, but first there is a difference (paper and cloth) in the object as well as the method is different.

As described above, the above-mentioned prior art documents are different from the present invention to which the method of selectively mixing is applied, as well as technically and methodically, and the object is also shown with different results.

In the present invention, in order to solve the problems of the prior art as described above, when manufacturing the wet paper (web) of each layer using a paper machine configured to have a separate paper mixing tank when manufacturing the security paper by the lamination method It was possible to differentiate the composition of the. In other words, by selectively administering additives such as color yarn, pigments, dyes, and silver sheets to the raw material composition of the surface layer and the backing layer, the paper is developed, in which the characteristics of both sides are observed differently when paper is manufactured by laminating each layer. The present invention has been completed based on this.

Accordingly, it is an object of the present invention to provide a security paper with different front and back characteristics of the security paper to distinguish the front and back characteristics of the anti-counterfeiting effect, which can easily determine the authenticity.

It is another object of the present invention to provide a method for manufacturing a security paper with different front and back characteristics.

Security paper differentiated front and back characteristics according to the present invention for achieving the above object:

In the security paper made of a multi-layer, at least one of the surface layer and the backing layer of the security paper comprises a natural light, infrared light, ultraviolet light, hologram reader or a combination that can be recognized when confirmed in combination thereof, the surface layer and When all the backing paper layers contain additives, at least one of the components of the additives included in each of the layers is different.

Method for producing a security paper with different front and back characteristics according to the present invention for achieving the above another object:

In the method of manufacturing a multi-layered security paper in a lamination method, natural light to at least one of the paper mixture for the surface layer for producing the surface layer of the security paper and the paper mixture for the backing layer for manufacturing the back layer. Inject infrared light, ultraviolet light, hologram reader, or a combination of these, and recognizable additives. When the additives are added to both the surface layer material mixture and the back layer material mixture, the additives are added to the respective material mixtures. At least one of the components of the additive is configured to be different from each other to produce each of the wetlands of each layer, and then they are laminated together in a wetland state, characterized in that the compression and drying.

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

As described above, in the present invention, additives such as color yarns, pigments, dyes, silver plaques, and the like are selectively added to at least one of the surface wet paper layer and the back wet paper layer when forming wet paper peels by the lamination method in a multilayer paper machine. Provided is a high-quality security paper and its manufacturing method in which the front and back surfaces are observed differently by different configurations.

The security paper according to the present invention is a multi-layered, preferably at least two-layered security paper, wherein at least one of the surface and backing layers of the security paper contains an additive. Here, when both the surface and backing layers contain additives, at least one of the components of the additives contained in each of the layers is selected differently so that the characteristics of the front and back surfaces are different from each other.

The amount of the additive is preferably about 0.001 to 0.1% by weight relative to the total material, but can be freely adjusted depending on the material used and the need.

The additive may be used without particular limitation as long as it can be recognized at the time of identification by using an identification method for determining the authenticity of ordinary security paper such as natural light, infrared light, ultraviolet light, hologram reader, and the like.

Preferably, as the additive, one of color yarn, pigment, dye, and silver plate may be used alone or in combination thereof.

Examples of the color yarn used in the present invention include invisible fluorescent color yarns, visible fluorescent color yarns, color-dyed color yarns, dichroic yarns, and the like, but are not particularly limited thereto, and any color yarns commonly used in the art may be used. The length of the colored yarn is not particularly limited, but is preferably 0.5 to 10 mm to facilitate visual identification.

Examples of the pigment used in the present invention include color pigments, photoluminescent pigments, fluorescent pigments, Zion pigments, pearl pigments, and chemically discolored pigments, but are not particularly limited thereto, and any pigments commonly used in the art may be used. The diameter of the pigment is not particularly limited, but is preferably 0.0001 to 1 mm to facilitate commercial purchase and application.

The silver plate used in the present invention may be made of a synthetic resin film, for example, polyester, polyethylene, polypropylene, polycarbonate, and the like, but is not particularly limited, and may be used as long as it is commonly used in the art. Preferably, the silver plate is printed on a synthetic resin film with color pigments, photoluminescent pigments, fluorescent pigments, Zion pigments, pearl pigments, dyes, fluorescent dyes, etc., with single diameters of about 1 to 10 mm. It is good.

On the other hand, when the security paper consists of three or more layers, the components of the strata forming the inner layer can be used without particular limitation as long as it is known in the art.

On the other hand, the manufacturing method of the security paper according to the present invention can be particularly easily applied to a paper machine of the lamination method for manufacturing and bonding a multi-layer, particularly preferably two layers of paper. That is, the additives such as color yarn, pigment, dye, silver plate and the like as described above are selectively added to at least one paper of the front surface and the back surface so that different characteristics are expressed on both sides when the final paper is produced.

More specifically, the security paper of the present invention is manufactured using a conventional lamination method for manufacturing a security paper consisting of a multi-layer, so that each layer, in particular, the surface layer and the backing layer can be prepared from different raw material composition Each is made from a papermaking machine having a separate stock mixing tank.

In one of the stock mixing tanks, a stock mixture for a surface layer for preparing a surface layer is placed, and in another, a stock mixture for a backing layer for manufacturing a back layer is added thereto, and the additives as described above are respectively added thereto. Optional input.

At this time, in order to differentiate the front and back properties in accordance with the present invention, the additive is added to any one of the surface mixture and the backing layer mixture, or configured differently, or both the surface layer and the backing layer mixture. When the additive is added, at least one component of the additive to be added to each stock mixture is configured differently, and then the wetlands of each layer are prepared.

Next, according to a conventional method known in the art, they are laminated together in a wet state, compressed and dried to obtain a security paper with differentiated front and back properties.

In one embodiment according to the present invention, a cross-sectional view of a security paper applied with a color yarn having different properties according to the lamination method is shown in FIG. In addition, an enlarged plan view of the high basis paper applied to the surface and the low basis paper applied to the back surface of the security paper of FIG. 1 is shown in FIGS. 2 and 3, respectively. 4A and 4B, respectively.

Security paper applied with different color yarns by the lamination method according to an embodiment of the present invention, first, different functions in the composition of the material of the first wet layer (1, 5) and the second wet layer (2, 6) The impregnated color yarns 3 and 4 are added to each mixing chest, and mixed with ordinary filler pigments and other reactive chemicals to form a finished stock. The color yarns 3 and 4 are not particularly limited and include all color yarns such as color yarns and color verbs of all colors of the visible fluorescence series, the invisible fluorescence series, and the non-fluorescence visual time series.

On the other hand, the feed rate of the color yarn is not particularly limited, but preferably about 0.001 to 0.1% by weight relative to the total drying material.

According to another embodiment of the present invention, an invisible fluorescence color yarn (not visible in natural light) is inserted into a material for manufacturing the first wetland layer, and a visible color yarn (observable in natural light) is added to the material for manufacturing the second wetland layer. After lamination, compression and drying are performed, followed by impregnation with PVA (polyvinyl alcohol), starch, gelatin and the like. This impregnated paper is then dried again to complete the final security paper.

Thus produced security paper is difficult to observe the presence of color yarns in natural light on one side (the first wetland layer surface), and the presence of color yarns in natural light on the opposite side (second wetland layer surface) has the effect of preventing forgery and alteration. .

According to still another embodiment of the present invention, as shown in FIG. 4A, a visible green fluorescent color yarn is inserted into a paper for producing a first wetland layer (surface), and a visible green color for the paper for producing a second wetland layer (back surface). By incorporating fluorescent color yarns and invisible red fluorescent color yarns and laminating them, the double-sided security paper is manufactured as described above. In natural light, only the green yarns on the surface and the green yarns on the back can be observed, while the UV yarns have red yarns on the back. It can be observed to have a forgery prevention effect.

According to still another embodiment of the present invention, as shown in FIG. 4B, a visible red fluorescent color yarn is inserted into a stock for manufacturing the first wetland layer (surface), and a visible red color is used for the stock for manufacturing the second wetland layer (backside). By incorporating fluorescent color yarns and invisible blue fluorescent color yarns and laminating them, the double-sided security paper is manufactured as described above. In natural light, only the red yarns on the surface and the red yarns on the back side can be observed, while the UV yarns up to the blue yarns on the back side. It can be observed to have a forgery prevention effect.

The foregoing embodiments are merely illustrative of the present invention and the present invention is not limited thereto.

As described above, the security paper applied with different additives by the lamination method according to the present invention has excellent anti-counterfeiting effect, so that the authenticity can be easily identified, and the security paper is differentiated by the different front and back characteristics by the additives observed differently. There is a high quality effect. In particular, such security papers may be used to manufacture securities such as bank notes, checks, bonds, and various gift certificates.

Although the present invention will be described in more detail with reference to the following examples and comparative examples, the scope of the present invention is not limited thereto.

Example 1

When manufacturing paper by lamination, invisible fluorescence color yarn (not visible in natural light) is inserted into the material for the first wetland layer production, and visible color yarn (observable in natural light) is added to the material for the second wetland layer production. Wetland was prepared. The pulp was cotton pulp beaten to 55 ^o SR. The basis weight of the first wetland layer is 60g / m ² , the basis weight of the second wetland layer is produced by 30g / m ^{2 The} final basis of the wetland is 90g / m ² . Paper for the manufacture of wetlands includes a retention enhancer to improve the retention of the composition mixture, dry strength enhancer and wet strength enhancer to improve the strength, sizing agent (rosin or neutral size agent) to prevent the wetting of water, etc. Was added respectively. The wetlands thus prepared were compressed and dried, impregnated with PVA (polyvinyl alcohol), starch, gelatin, etc., and then dried to complete the final paper.

Example 2

Yellow-green color pigments were added to the paper for preparing the first wet paper layer, and blue-red color pigments were added to the paper for the second wet paper layer to prepare paper as in Example 1.

Example 3

In order to manufacture the first wet paper layer, an invisible fluorescent printed silver plate having a diameter of 1 mm was added, and a hologram silver plate having a diameter of 1 mm was added to the paper for preparing the second wet paper layer, thereby preparing paper as in Example 1. It was.

Example 4

Pearl pigment was added to the paper for preparing the first wet paper layer, and paper was prepared as in Example 1 without adding pearl pigment to the paper for the second wet paper layer.

Example 5

Titanium dioxide filler was added to the paper for preparing the first wet paper layer, and 3% of the paper was prepared for the second wet paper. It was.

Hereinafter, the results of observing the front and back characteristics of the security paper manufactured in Examples 1 to 5 are as follows.

In the case of Example 1, the paper surface composed of the first wetland layer was impossible to observe the color yarn in natural light, but the color yarn emitting in ultraviolet light was observed, and the paper surface composed of the second wetland layer was also observed in natural light. That is, the characteristics observed on both sides of the paper in natural light are shown differently.

In Example 2, the paper surface composed of the first wetland layer was observed in yellowish green color, but the paper surface composed of the second wetland layer was observed in blue-red color.

In Example 3, the surface of the paper composed of the first wetland layer was not observed in natural light, but was observed in the ultraviolet light. On the surface of the paper constituted by the second wetland layer, the holographic pattern was observed.

In Example 4, a pearl pigment was observed in the paper surface composed of the first wetland layer, but no pearl pigment was observed in the paper surface composed of the second wetland layer.

In the case of Example 5, the paper surface composed of the first wetland layer did not emit light in ultraviolet light, but the paper surface composed of the second wetland layer was whitened and emitted.

As described above, in the case of the security paper with different front and back characteristics according to the present invention, unlike the two-sided security paper according to the prior art which is easy to forge because the characteristics of both sides are observed to be the same, different characteristics on both sides of the paper This can be given an excellent anti-counterfeiting effect, it was also easy to determine the authenticity.

As described above, according to the present invention, in the security paper produced by the lamination method, by selectively adding different additives to the paper for manufacturing the surface layer and the backing layer is excellent anti-counterfeiting effect and easy to identify the authenticity It has a high quality effect. Such security papers include, in particular, securities such as bank notes, checks, bonds, passports, and various gift certificates. In particular, the passport is manufactured in the form of a booklet, so that both sides of the paper can be observed on one side of the booklet.

Claims (7)

In the security paper made of a multi-layer, at least one of the surface layer and the backing layer of the security paper comprises a natural light, infrared light, ultraviolet light, hologram reader or a combination that can be recognized when confirmed in combination thereof, the surface layer and When the backing layer includes all of the additives, at least one of the components of the additives included in each of the layers is different from each other, wherein the additives are selected from the group consisting of color yarns, pigments, dyes, and silver sheets. Security paper with different front and back characteristics. delete The security paper of claim 1, wherein the color yarn is an invisible fluorescent yarn, a visible fluorescent yarn, a color bronze yarn, a dichroic yarn, or a combination thereof. According to claim 1, wherein the pigment is a color paper, photoluminescent pigment, fluorescent pigment, Zion pigment, pearl pigment, chemical discoloration pigment or security paper characterized in that the different front and back characteristics characterized in that a combination thereof. The front and back properties of claim 1, wherein the silver plate is a full-width synthetic resin film, which is printed with color pigments, photoluminescent pigments, fluorescent pigments, Zion pigments, pearl pigments, dyes, fluorescent dyes, or a combination thereof. This differentiated security paper. 6. The security paper of claim 5, wherein the synthetic resin film is polyester, polyethylene, polypropylene, polycarbonate, or a combination thereof. In the method of manufacturing a multi-layered security paper in a lamination method, natural light to at least one of the paper mixture for the surface layer for producing the surface layer of the security paper and the paper mixture for the backing layer for manufacturing the back layer. In the case of checking the combination of infrared light, ultraviolet light, hologram reader or combinations thereof, recognizable additives are added, but when the additives are added to both the surface mixture and the backing mixture, the additives are added to the respective mixtures. At least one of the constituents of the composition comprises to prepare each of the wetlands of each layer to be different from each other, then laminating them together in a wetland state, squeezed and dried, wherein the additives are colored yarn, pigments, dyes and silver Front and back characteristics, characterized in that at least one selected from the group consisting of Method of manufacturing this differentiated security paper.

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