RU2409473C2 - Paper with high extent of counterfeit protection and method of its manufacturing - Google Patents

Abstract

FIELD: printing industry. ^ SUBSTANCE: paper contains one or more elements of counterfeit protection, included into specific areas on or inside paper. Polymer item is arranged in the form of polymer film, strips of polymer film included onto/cast onto/coating polymer film. Polymer strips/threads are woven or combined to each other into a package by textile method. Method includes working operation of placing polymer item, comprising counterfeit protection element (elements) onto paper pulp cloth in process of paper manufacturing. Method includes integration of one or more following working operations in process of paper manufacturing: a) application in such a manner that one or more specified polymer items stick to layer of moist cloth of paper pulp after specified layer is formed in process of paper making; b) application in such a manner so that at least one layer made of one or more specified polymer items sticks to previously moulded layer of moist cloth of paper pulp after specified layer of moist cloth of paper pulp is formed in process of specified paper making. ^ EFFECT: development of paper with high extent of counterfeit protection. ^ 20 cl, 2 dwg, 1 tbl

Description

FIELD OF THE INVENTION

The present invention relates to paper with a high degree of protection against counterfeiting and to a method for manufacturing paper with a high degree of protection against counterfeiting.

BACKGROUND OF THE INVENTION

The technology of machine-readable protection elements requires the use of expensive chemicals, pigments and lots of DNA. If it is possible to machine read and be invisible to the naked eye, the security elements require their discrete placement in such a way that the reader has the ability to accept or refuse to accept peremptorily protected documents or banknotes. Accurate delivery of these expensive chemicals / protective elements is required to identify the location and ultimately control the total cost.

The cost of banknotes includes the cost of paper in total with the cost of printing ink (60%) and other hidden costs (40%). Paper is needed for the manufacture of banknotes, and in various countries 100% polymer banknotes, also called “plastic” banknotes, are in circulation. These "plastic" banknotes have their inherent disadvantages. For example, they may not have a watermark to protect against counterfeiting. They do not fold completely like paper, special printing inks are needed to adhere them to the polymer substrate, and protective threads cannot be inserted / immersed in such a way that the only way to protect these types of “plastic” banknotes is only surface protection against counterfeiting (similar to printing, embossed). In many countries, a compromise was noticed, which many Reserve Banks are ready to accept as a line of orientation to the phenomenal strength that this “plastic" currency can give. Banknotes with a low face value, having reduced durability, contributed to the intended use for these “plastic” currency bank notes.

There are several patent documents in the patent fund relating to giving the paper anti-counterfeiting elements, but the invention addresses the need to provide several types of anti-counterfeiting elements at an accurate location and at minimal cost, as well as the need to give strength to the combination of paper and film.

One such patent document is US Patent No. 4,551,617, in which thin strips soluble in water are imprinted with anti-counterfeiting elements, and these individually imprinted strips are then acetylated or heat treated before being placed on a paper tape. Thin stripes dissolve during the dehydration and drying operation, and microprints remain on the paper. Problems arise with the exact location of individual stripes on a paper tape. In addition, when using very thin strips, it is not possible to deliver oversized security elements.

In accordance with this, the aim of the present invention is to provide an improved method of manufacturing paper with a high degree of protection against counterfeiting and with elements of protection against counterfeiting at their exact locations.

In connection with the first aspect of the invention, there is provided a method for providing one or more security elements at their exact locations in counterfeit paper used for banknotes, as passport paper, visa paper, for counterfeit documents, etc. .d., by using the polymer (s) film (s) as a carrier of the protection element (s).

Through the use of this invention, the security element (s) is (are) immersed (s) / obtained (m) embossed / imprinted (s) on a polymer film, and this preformed polymer film containing the counterfeit protection element (s) is inserted into counterfeit paper during the manufacturing process.

When implementing preferred embodiments of the invention, anti-counterfeiting elements are printed on a continuous web of polymer film, which is inserted into the paper during its manufacture. In this method, the security element (s) may be immersed / embossed / imprinted / imprinted (s) in a continuous web of polymer film so as to achieve the exact location of the anti-counterfeiting elements when the paper webs are joined together and polymer film. This method allows counterfeit security elements to have a wide range of variety and immersion in finished paper. In addition, a plurality of multi-color counterfeit security elements can be reliably incorporated.

With this method, the invention addresses the needs of the delivery of various types of anti-counterfeit security elements with accurate placement and minimal material costs. In the description and claims, hereinafter, the terms are used with the following designation.

Water Soluble Film (WSF). By definition, this will mean water-soluble film (s) of all types. The water-soluble film can be made by direct casting onto a conveyor, using removable sheathing, by casting using a T-shaped extrusion head, by blowing the film on extrusion plants, or by extrusion using a T-shaped extrusion head. The composition of the water-soluble film should determine the temperature of the water at which the water-soluble film should dissolve easily. This range of water temperature is in the range from 5 to 100 degrees Celsius. In order to implement this invention, it is explained that a water-soluble film covers all its types in which it is made by any of the above methods, including directly coating the water-soluble film with forming polymers.

For the purpose of implementing this invention, it is explained that the term CWSF means a film that is soluble in cold water, in which it becomes sticky, breaks down and completely dissolves at a temperature varying from 5 to 40 degrees Celsius, preferably from 10 to 40 degrees Celsius and more preferably in the range of 20 to 40 degrees Celsius. The time for the conversion of the CWSF film to adhesive, the destruction of the film and its dissolution should be in the range from 1 to 3 minutes in contact with water / with water pulp. However, this should depend on the composition of the CWSF film.

Similarly, for the purpose of implementing this invention, it is explained that the term HWSF means a film that is soluble in hot water, in which it becomes sticky, breaks down and completely dissolves at a temperature ranging from 40 to 100 degrees Celsius, preferably in the range from 45 to 90 degrees Celsius and more preferably in the range of 50 to 85 degrees Celsius. The time for converting the HWSF film into adhesive, the destruction of the film and its dissolution should be in the range from 5 seconds to 5 minutes in contact with water / with water pulp. However, this should depend on the composition of the HWSF film.

Similarly, for the purpose of implementing this invention, it is explained that the term NSHF means an insoluble hydrophilic film that must become sticky and can break / crack, dissolve in certain places, but it should not dissolve in contact with water / water pulp. The time to obtain stickiness and destruction should be in the range from 7 seconds to 10 minutes, and this time depends on the composition of the insoluble hydrophilic film and the temperature of the water.

The water-soluble films mentioned in this invention are made from materials that are selected from the polymers forming the film, and from those that are similar to the polymers of the polyvinyl alcohol copolymer, the polyvinyl alcohol homopolymer, the non-ionic polyvinyl alcohol polymer, the polymethacrylate, polyvinyl alcohol, the polyacrylate, the polyacrylate, the polyacrylate polymethacrylic acid, polyurethane, polyethylene glycol, polyvinylpyrrolidone, a protein binder such as gelatin, modified gelatin Such as phthaloyl gelatin, polysaccharides such as starch, gum arabic, pullulan and dextrin and water-soluble cellulose derivative or a combination thereof. The cellulose derivatives used are methyl cellulose, hydroxypropyl cellulose, hydroxypropylethyl cellulose, hydroxyethyl cellulose, methyl carboxy cellulose. However, these materials are not limited.

The addition and inclusion of certain additives, such as ammonium chloride and other such alkaline chemicals, should make the film insoluble and hydrophilic.

NSNHF film. It is an insoluble film of a hydrophilic type. This type of film is available on the market, and the film can be selected in the form of one that is made of PP (polypropylene), PE (polyethylene), LDPE (low density polyethylene), HDPE (high density polyethylene), LLDPE (linear low density polyethylene) , HIPS (high impact polystyrene), HMHDPE (high molecular weight high density polyethylene), it can be a BOPP film (biaxially oriented polypropylene film). However, these films are not limited. This insoluble, non-hydrophilic film can be made from biodegradable materials such as PLA (polylactic acid), RIA (polyhydroxyalkanoic acid) or thermoplastic starch materials, or biodegradable polyesters such as ecoflex.

An NSNHF film is necessarily combined with a layer of CWSF polymer film on one or both sides, depending on its end use.

Combinations of films. The films used to increase paper strength can be soluble in cold or hot water, either an insoluble hydrophilic film, or an insoluble non-hydrophilic film, or a combination of these films, as mentioned below:

1. The combination of films CWSF + HWSF. It is a combination of soluble films in cold and hot water, in which a film soluble in cold / hot water is cast / coated / laminated on a film soluble in hot / cold water.

2. The combination of films CWSF + HWSF + CWSF. It is a combination of water-soluble films in which a film that is soluble in hot water must be between films that are soluble in cold water.

3. The combination of films CWSF + NSHF. It is a combination of soluble in cold water and insoluble hydrophilic films in which the NSHF / CWSF film will be cast / coated / laminated on a CWSF / NSHF film.

4. The combination of films CWSF + NSHF + CWSF. It is a combination of cold water soluble / insoluble hydrophilic / hot water soluble films in which the NSHF film is between two cold water soluble films.

5. The combination of CWSF + NSNHF. It is a combination of soluble in cold water and insoluble non-hydrophilic films when the NSNHF / CWSF film is cast / coated / laminated on a CWSF / NSNHF film.

6. The combination of films CWSF + NSNHF + CWSF. It is a combination of a cold water soluble / insoluble hydrophilic / cold water soluble film in which an NSNHF film is between two cold water soluble films.

7. A bunch of bands with a longitudinal direction. Strips of polymer films are inserted / cast / coated on another polymer film. This combination can be formed by a coating zone, or by a discrete printing zone, or by an extrusion coating zone, or by film formation on another polymer film, which is then inserted into the paper during the paper manufacturing process.

8. A bunch of woven ribbons. Strips of polymer films or strands of PVA (polyvinyl acetate) are intertwined according to the textile method of warp and weft formation. There is a polymer film or a combination of films, as described above, and it is cut into microbands having a width varying in the range of 3 to 15 mm, preferably in the range of 4 to 10 mm, and more preferably in the range of 5 to 7 mm. However, this range is not limiting. The size of the filaments of polyvinyl acetate varies in the range from 50 to 1000 denier, preferably in the range from 150 to 700 denier, and more preferably in the range from 300 to 500 denier. However, this size is not limiting. These tapes or threads are woven offline, forming the warp and weft, as seen on a textile loom, and a continuous bundle is made into a web. These tapes can be inserted into the paper pulp web with a combination of longitudinal (MD) and transverse (CD) directions.

9. Films with perforations. Any of the aforementioned films or combinations of films may be perforated at arbitrary locations, at discrete locations, or throughout. These perforations can be carried out by various means and such as those that are similar to heated needles, they can be performed mechanically / by means of needles covered with rollers, these means are similar to machines for pneumatic / mechanical perforation, etc. However, these means are not limiting.

Paper pulp. The paper pulp used to make this high-strength paper is selected from a mixture of hard and soft wood fibers, cotton fibers such as cotton towels and cotton trimmings, linen, flax, jute, hemp, Japanese goat tree fibers, mizumat, gumpi, grass fiber, such as those made from esparto grass, from bamboo, giant nettle, rice straw and rattan whips, and also from wood pulp. However, they are not limiting.

Elements of protection against fake. Counterfeit elements immersed in a water-soluble film may include, but are not limited to, printed microtext, logos, metallized / demetallized particles / fibers, barcodes, watermarks, nanoparticles, which may be machine readable, chemical markers, microtags, DNA (synthetic or natural), to be sources of ultraviolet radiation, relays with an internal effect, a computer, a device for machine reading, RFID devices for identification and p.

The polymer film can be water-soluble in cold or hot water, or a water-insoluble hydrophilic film, or a water-soluble non-hydrophilic film, or a combination of two films soluble in cold water and one between them, soluble in hot water, or films soluble in cold + in hot water, either a film soluble in cold water + an insoluble hydrophilic film, or a soluble film in cold water + an insoluble hydrophilic film + soluble in cold water film, or soluble in cold water + insoluble non-hydrophilic films, or insoluble in cold water + insoluble non-hydrophilic + insoluble in cold water films or cut tapes of one or many of these combinations, woven or bound offline, or bands of polymer films inserted into another / cast onto another / covering another polymer film incorporated in the paper during the manufacturing process.

The term "polymer film" should be formulated accordingly to include all of these combinations to achieve the objective of the invention.

Preferably, perforations are used for polymer films of types HWSF, or NSHF, or NSNHF, or combinations thereof, but this condition is not limiting when it comes to all types of films and their combinations that are referred to here. The polymer film may be flat or perforated completely, partially or randomly.

One embodiment of the invention provides for hardening paper with anti-counterfeiting by incorporating a water-soluble film, or a soluble hydrophilic film, or an insoluble non-hydrophilic film, or a combination of these films during the paper manufacturing process.

In another embodiment of the invention, the anti-counterfeiting element (s) is delivered (s) using a cold water-soluble film, the anti-counterfeiting element (s) being immersed / imprinted / disposed on a cold water soluble film. A film soluble in cold water should increase its solubility in the pulp fibers, and as a result, anti-counterfeit elements are delivered to the desired location.

In a further further embodiment of the invention, the counterfeit protection element (s) is delivered (s) by means of a hot water-soluble film selectively perforated, wherein the counterfeit security elements are immersed / imprinted on the hot water-soluble film. A film that is soluble in hot water and carries the anti-counterfeiting element (s) on it must remain intact due to the different temperature of the pulp and the water emulsion and deliver the anti-counterfeit elements to the desired places, which solves the problem of the presence of microtext words or logos floating inside a bundle of paper pulp, which may be available when only CWSF film or CWSF film strips are used. It should also give strength to the final product.

In a further further embodiment of the invention, the anti-counterfeiting element (s) is delivered (s) by an insoluble hydrophilic film selectively perforated, while the anti-counterfeiting elements are immersed / imprinted / imbedded on an insoluble hydrophilic film. The film should not dissolve in the pulp fibers, but it should become sticky due to its hydrophilic nature and should adhere to a partially formed layer of pulp. As a result, the film remains intact and delivers the anti-counterfeiting element (s) to the desired locations. This should also give added strength to the final product. This film can especially be used when the temperature of the water pulp is slightly increased in value. This should also give added strength to the final product.

In a further further embodiment of the invention, the anti-counterfeit element (s) are delivered (s) by an insoluble non-hydrophilic film, wherein the anti-counterfeit elements are immersed / imprinted / located on the NSNHF film. The insoluble non-hydrophilic film should not dissolve in the pulp fibers and should not become sticky, but it should be absorbed inward, since it is perforated, as a result of which the anti-counterfeiting element (s) is delivered (s) and the paper strength is increased .

In a further further embodiment of the invention, the anti-counterfeiting element (s) is delivered (s) by a combination of films soluble in cold and hot water, selectively perforating the HWSF film and the anti-counterfeiting elements immersed / imprinted / imprinted on hot water soluble film. A film that is soluble in cold water should increase the solubility in pulp fibers, increasing the strength of the paper, while a film that is soluble in hot water containing the anti-counterfeiting element (s) must remain intact, as a result of which it is delivered to the desired places counterfeit security element (s). This should also give added strength to the final product.

In a further further embodiment of the invention, the anti-counterfeiting element (s) is delivered (s) by a combination of cold water soluble films, a hot water soluble film and a cold water soluble film, wherein the HWSF film is perforated selectively, and anti-counterfeiting elements are immersed / imprinted / located on a film soluble in hot water. A film soluble in cold water should increase the solubility in pulp fibers, increasing the strength of the paper, while a film soluble in hot water containing the anti-counterfeiting element (s) should remain intact due to the different temperature of the pulp and the aqueous suspension for placement at the desired locations of the anti-counterfeiting element (s) and to give added strength to the final product obtained.

In a further further embodiment, the anti-counterfeiting element (s) is delivered (s) by a combination of films, one of which is soluble in cold water and the other is insoluble and hydrophilic, wherein the NSHF film is selectively perforated and the security elements are fakes are immersed / imprinted / placed on an insoluble hydrophilic film. A film soluble in cold water should increase solubility in pulp fibers, increasing paper strength, while an insoluble hydrophilic film should not dissolve in pulp fibers, but it should become sticky due to its hydrophilic nature and should adhere to a partially formed pulp layer. As a result, the film must remain intact and deliver the anti-counterfeiting element (s) to the desired locations. It should also give added strength to the final product.

In a further further embodiment, the anti-counterfeiting element (s) is delivered (s) by a combination of films soluble in cold water, and between them there is an insoluble hydrophilic film, the insoluble hydrophilic NSHF film being selectively perforated, and the security elements against fakes are immersed / imprinted / placed on an insoluble hydrophilic film. A film soluble in cold water should increase solubility in pulp fibers, increasing paper strength, while an insoluble hydrophilic film consisting of counterfeit protection elements should not dissolve in pulp fibers, but it should become sticky due to its hydrophilic nature and must adhere to a partially formed pulp bed. As a result of this, the film must remain intact and deliver the anti-counterfeiting element (s) to the desired places. It should also give added strength to the final product.

In a further further embodiment of the invention, the anti-counterfeiting element (s) is delivered (s) by a combination of films, one of which is soluble in cold water and the other is an insoluble non-hydrophilic film, wherein the insoluble non-hydrophilic NSNHF film is selectively perforated, and counterfeit security elements are immersed / imprinted / placed on an insoluble non-hydrophilic film. A film soluble in cold water should increase solubility in pulp fibers, increasing paper strength, while insoluble non-hydrophilic film should not dissolve in pulp fibers. As a result, the film must remain intact and deliver the anti-counterfeiting element (s) to the desired locations. It should also give added strength to the final product.

In a further further embodiment, the anti-counterfeiting element (s) is delivered (s) by a combination of films, two of which are soluble in cold water, and the third between them is an insoluble non-hydrophilic film, wherein the insoluble non-hydrophilic NSNHF film is selectively is perforated, and anti-counterfeit elements are immersed / imprinted / placed on an insoluble non-hydrophilic film. A film soluble in cold water should increase solubility in pulp fibers, increasing paper strength, while an insoluble non-hydrophilic film consisting of counterfeit protection elements should not dissolve in pulp fibers. As a result, the film must remain intact and deliver the anti-counterfeiting element (s) to the desired locations. It should also give added strength to the final product.

In a further further embodiment of the invention, the anti-counterfeiting element (s) is delivered (s) using a plurality of polymer films including film strips, the strips being mounted on / cast onto / coated on another film to deliver counterfeit security elements that are immersed / imprinted / located on the stripes of the film.

For example, HWSF film strips consisting of counterfeit protection elements are mounted on / cast on / cover a film that is soluble in cold water. A film that is soluble in cold water should increase the solubility in pulp fibers, increasing the strength of the paper, while a film that is soluble in hot water with an anti-counterfeiting element (s) should remain intact due to the different temperature of the pulp and the aqueous suspension, thereby solving the problem of having microtext words or logos floating inside the paper pulp matrix, which can be available when only CWSF film or CWSF film strips are used.

In a further other embodiment of the invention, the anti-counterfeit element (s) is delivered (s) by a bundle of films in which the anti-counterfeit elements are immersed / imprinted / placed on strips of polymer films or on polyvinyl acetate (PVA) yarns that are interwoven with textile the way when there are warp and weft. For example, strips can be a combination of films that are soluble in cold and hot water, or only films that are soluble in hot water, or insoluble hydrophilic films, or only films that are soluble in cold water, to deliver counterfeit security elements that are immersed in / printed on / are on a film soluble in hot water. The HWSF or NSHF films used are perforated selectively and selectively. Cold water soluble strips should increase solubility in the pulp fibers, increasing paper strength, while hot water soluble strips containing counterfeit protection elements should remain intact and, as a result, bring the counterfeit protection elements to their desired location. . It should also give added strength to the final product.

According to a second aspect, the present invention provides for counterfeit security paper made by the method of the first aspect of the invention.

Embodiments of the invention will now be described in more detail by way of example, with reference to the accompanying drawings, in which:

figure 1 illustrates the first method of manufacturing high-strength paper in accordance with the invention; and

figure 2 illustrates a second method of manufacturing high-strength paper in accordance with the invention.

Referring to FIG. 1, it can be seen that it illustrates a method of incorporating a polymer film with anti-counterfeiting elements immersed / cramped / imprinted on paper during the manufacturing process of the method of cylindrical molding, and this method includes the following operations:

1) filling the tank (2) with an aqueous pulp suspension supplied through the inlet (4), while the pulp content varies from 5 to 7%;

2) the formation of a paper substrate on the outside of the rotating cylinder (1), covered with a metal mesh. As the cylinder rotates, water is removed from the inner cavity of the cylinder, and a layer of fibers is formed from the outside. It is sealed with a squeeze roller (7), which further squeezes the water out. The squeeze roller also exfoliates wet paper, cleaning the cylinder, and transfers it to a continuously moving belt (3);

3) layering a preformed polymer film (8) into which the anti-counterfeit security element (s) is immersed / cramped / imprinted (s) onto a pulp fiber formation on an squeeze roller, as shown in the drawing;

4) passing the structure through the boxes (9) evacuation to remove excess water from the pulp layer. The fiber content in the pulp increases to 30-40%;

5) passing the structure through a compression roller (10) to remove excess water;

6) transferring the structure to dryers for further evaporation of moisture from the paper web.

Similarly, a polymer film containing counterfeit security elements can also be inserted during operation of a long-mesh paper machine in the manufacture of paper.

During step 3, if the CWSF film with anti-counterfeiting elements is immersed / cramped / printed, then the film should begin to dissolve as soon as it comes into contact with the pulp layer, and it must penetrate the paper when it passes through evacuation boxes, and anti-counterfeiting elements should remain intact in the pulp formation.

If there is an HWSF film, or an NSHF film, or an NSNHF film, or any other combination thereof having at least one layer or one strip of HWSF / NSHF / NSNHF films, the film should not dissolve and should remain on the surface of the pulp formation due to the presence of a small box capacity for vacuum suction. Therefore, if an HWSF film, or an NSHF film, or an NSNHF film, or any other combination of films consisting of HWSF, NSHF, NSNHF films is available, then they must be included in the pulp formation, a twin pair forming process may be required depending on the needs and marginal quality of the required paper.

As shown in figure 2, the first layer of wet paper is formed in the form of a suspension of water pulp coming from the box (12) for approaching the mass and falling on a continuously moving belt (11) using the first forming device (13). The temperature of the aqueous suspension of pulp in the box for approaching the mass varies from 15 to 40 ° C. More preferably, it ranges from 25 to 30 ° C. The concentration of pulp fibers in the aqueous suspension of pulp in the box for the approach of the mass varies from 5 to 7%. The first layer of wet paper formed by the first forming device, by weight and thickness is 80% of the final paper. The polymer film or any combination thereof when immersed / embossed / printed with anti-counterfeiting elements when reeling from the folding machine (15) is included in the first layer of the wet paper web using a guide roller (16), as shown in the drawing. A second layer of wet paper is formed on the side of the polymer film of the first layer of wet paper using a second forming device (14). A cylinder (14) coated with a wire mesh rotates in a container (17) containing an aqueous suspension of pulp. As the cylinder rotates, water is removed from the inner cavity of the cylinder, while a layer of pulp fibers forms on the outside. It is sealed with a squeeze roller (18), which additionally squeezes out water and removes it. The squeeze roller also peels off the wet paper when cleaning the cylinder and transfers it to a continuously moving belt that feeds it to the pressing section. The second layer of wet paper formed by the second forming device, by weight and thickness is 20% of the manufactured paper.

Even more water is removed in the pressing section (19), and two-layer paper is additionally sent to the dryers for additional evaporation of moisture from the paper web.

The polymer film or combination of polymer films containing anti-counterfeiting elements may be of any type previously described, wherein the anti-counterfeiting elements are included during the paper manufacturing process at precise locations using the polymer film as a carrier for accurately positioning the anti-counterfeiting elements fakes on manufactured paper.

The following experiments were conducted in the laboratory to prove that the polymer film, when it is included in the paper, should increase the strength of the paper.

The following experiments were carried out in the laboratory to prove the implementation of the invention.

Paper making

1. We received some dehydrated stock pulp from a paper mill and cut pulp binder material into small pieces, and then soaked these parts with warm water in a large tank all night.

2. We filled the mixer halfway with warm water, then added a small amount of pulp soaked parts. We mixed the parts until the pulp pieces began to differentiate. It has turned into a pulp aqueous suspension.

3. We poured the mixed mixture into a large tank, and then filled the tank with warm water, thoroughly mixing its contents until the ingredients were evenly dispersed.

4. We pushed the sieve / sieve into the tank and allowed a certain amount of pulp to settle on the sieve, still holding the sieve under water, then gently moved it back to get an even layer of fibers on the sieve.

5. We lifted the sieve from the suspension, holding it in the plane, and made it possible to drip over the tank until most of the water was removed.

6. We dried the wet paper with a hair dryer and then left it to dry for a few hours to remove excess water.

7. When the paper dried, we gradually removed it from the sieve for manually forming paper. We determined the specific gravity of the paper, which was 110 g / m ² .

8. We tested this paper for tensile strength according to standard D 882 on a universal testing machine (UTM).

Making paper with CWSF film in it

1. We immersed the sieve in a tank containing an aqueous suspension of pulp, which was formed in the same way as in the method described above, and allowed the sludge to settle on the sieve, while still holding the sieve under water, then gently moved it back to get an even layer of fibers on decide.

2. We lifted the sieve from the suspension, holding it in the plane, and made it possible to drip over the tank until most of the water was removed and the sieve was placed on the floor.

3. We obtained on wet paper an upper layer of CWSF film 30 microns thick. As soon as the CWSF film came into contact with wet paper, it began to dissolve and completely dissolve after a while.

4. We dried the wet paper and CWSF film with a hair dryer and then left to dry for a few hours to remove excess water.

5. When the paper and CWSF film became dry, we gently peeled them off from the sieve to form high-strength paper. The thickness of this structure corresponded to a specific gravity of 110 g / m ² .

6. We tested this paper with a CWSF film for tensile strength in accordance with D 882 on a universal testing machine (UTM).

Making paper including an HWSF layer

1. We immersed the sieve in a tank containing an aqueous suspension of pulp, which was formed in the same way as in the method described above, and allowed the sludge to settle on the sieve, while still holding the sieve under water, then gently moved it back to get an even layer of fibers on decide.

2. We lifted the sieve from the suspension, holding it in the plane, and made it possible to drip over the tank until most of the water was removed and the sieve was placed on the floor.

3. We obtained on wet paper an upper layer of HWSF film with a thickness of 20 microns. As soon as the HWSF film came into contact with wet paper, it became sticky but did not dissolve.

4. We molded another layer of wet pulp on a different sieve and allowed water to drip, as explained above, and we gently placed this sieve on the upper side of the HWSF film on wet paper, which was made in Step 3.

5. We dried two layers of paper with an intermediate layer of HWSF film using a hair dryer and left them to dry all night to remove excess water.

6. When two layers of paper with an intermediate layer of HWSF film have dried, we gently peeled them from the sieve by peeling to form high-strength paper.

7. We tested these layers of paper with an intermediate layer of HWSF film for tensile strength according to standard D 882 on a universal testing machine (UTM).

Similarly, a water-soluble film (WSF) (20 microns thick) was included in the paper when combined with the CH bond.

Care was taken to keep the paper thickness constant with the inclusion of a polymer film.

The table shows the comparison of paper strength with the inclusion of CWSF, HWSF films, and also WSF films with a combination of CH bond.

Mechanical characteristics Tensile Strength, kgf / cm ² Elongation,% Maximum power load, kgf Paper (with a specific gravity of GSM 110 g / m ² ) 66.53 2.1 1.82 CWSF film-on paper (GSM = 110 g / m ² ) 135.05 5.56 4.33 HWSF film-on paper (GSM = 110 g / m ² ) 97.67 4.15 2,686 Combined paper with С-Н communication (GSM = 110 g / m ² ) 122.07 5.7 3,357

The following experiments were also performed:

1. We cast the HWSF film and the area covered by the composition of the CWSF film with anti-fake elements similar to those that are secret dyes visible under ultraviolet radiation, which were dipped in a batch with a separate container, forming strips coated and not covered by the lines of the CWSF film .

2. We inserted this bundle, formed during operation 1, into the pulp mixture during the papermaking process, as described previously in the case of the experiments performed.

3. We inspected a sheet of paper and found that the anti-counterfeit elements mentioned in the description of Step 1 were located in the same place and that the strength was increased, which was an advantage of this method.

It has been proven that now we can immerse many visible and invisible anti-counterfeiting elements and guarantee that the same elements are distributed at a given place on the paper sheet and, therefore, on the sheet of paper completed by manufacturing, for example, on a banknote.

An experiment with a fake protection element sealed in the region of a cast film using a combination of methods using CWSF and HWSF films

4. We cast the HWSF film and the area covered by the composition of the CWSF film with anti-fake elements similar to those that are secret dyes visible under ultraviolet radiation, which were dipped in a batch with a separate container, forming strips coated and not covered by the lines of the CWSF film .

5. We printed signs using an engraving cylinder and printing inks to protect against counterfeiting at the top of the CWSF film, which could optionally be identified using a UV lamp to facilitate print registration.

6. We inserted this bundle formed in Step 1 into the pulp mixture, as mentioned earlier.

7. We inspected a sheet of paper and found that the anti-counterfeiting elements mentioned in the description of steps 4 and 5 were located at the same predetermined location, and that the strength was increased, which was an advantage of this method.

An experiment with a fake protection element sealed in the region of a cast film using a combination of methods using CWSF and HWSF films

8. We cast the CWSF film and coated it with a time delay with a binder coating similar to that which is a water-based film forming an acrylic coating and formed a coated area using the composition of the HWSF film with counterfeit security elements similar to those that are secret dyes visible under ultraviolet radiation, which were immersed in a batch with a separate container, forming strips, coated and not covered by lines of HWSF films.

9. We printed signs using a different engraving cylinder and printing inks to protect against counterfeiting at the top of the HWSF film, which could optionally be identified using a UV lamp to facilitate printing. It could be seen that the use of multiple installations makes it possible to immerse many elements to prevent counterfeiting in paper at predetermined locations.

10. We inserted this ligament formed during operation 1 into the pulp mixture, as mentioned above.

11. We inspected a piece of paper and found that the anti-counterfeit items mentioned in the description of steps 8 and 9 were registered at the same specified location, and that the printed signs were visible and intact, as they were printed. This was a significant addition to the strength of the paper when using this method.

Likewise, by varying combinations of films soluble in cold and hot water, or by “injection molding”, or by means of a coating area, desired areas can be created for identifying counterfeit security elements. Accordingly, these areas can be identified as the original decoration for the search for anti-counterfeiting elements on a particular sheet of paper even after cutting them into small pieces, like paper banknotes.

This solves certain problems, such as the precise insertion of small, difficult to control threads into the original canvas of the pulp layer or similar “floating” marks, which leads to difficult rejections and, accordingly, to a difficult paper-making process.

As noted earlier, the present invention provides a method of manufacturing counterfeit paper, wherein one or more security elements is accurately positioned in the paper, and the paper is optionally hardened by using a polymer film as a carrier of the anti-counterfeiting element (s) in time to complete the paper making process. The polymer film may be water soluble with selective solubility at temperatures above or below the temperature of the water contained in the paper base to which it is applied during production. This way we can control the method according to which a water-soluble film is included, and therefore, control the location of the anti-counterfeiting element (s) in the final manufactured product. For example, a water-soluble film can dissolve or remain intact, and we can use combinations of films that can dissolve or remain intact, or combinations of any of these films with or without other films, such as insoluble hydrophilic films.

According to another aspect of the invention, we provide for a method of manufacturing anti-counterfeit paper, including providing a carrier film comprising one or more counterfeit security elements at predetermined locations, forming a paper web, applying a carrier film to the web to position the element (s) ) anti-counterfeiting at desired locations on the canvas, while the film carrier includes water-soluble films, insoluble hydrophilic films and insoluble non-hydrophilic-soluble film.

A water-soluble film can increase water solubility and be absorbed in the web, leaving the anti-counterfeit element (s) at desired locations on the web. Alternatively, the water-soluble film may remain intact to position the anti-counterfeiting element (s) at desired locations on the web.

The carrier film may contain two or more films having different solubilities, while different solubilities of the films can be used to position the anti-counterfeiting element (s) at desired locations during the paper manufacturing process and selectively be used to increase paper strength. For example, a carrier film may comprise a combination of any two or more films, soluble in cold water, soluble in hot water, insoluble hydrophilic films and insoluble non-hydrophilic films. Element (s) can (gut) be included (s) in one or more films forming a film carrier.

Claims (20)

1. A method of manufacturing a paper with anti-counterfeiting, having one or more anti-counterfeit elements included at exact places on or inside the paper by using a polymer product as a carrier for the anti-counterfeit element (s); the specified polymer product is made of polymer in the form of a polymer film, strip (s) of polymer film included on (cast on) covering the polymer film, polymer stripes are interwoven into a bundle in a textile way with warp and weft, polymer threads are interwoven into a bundle textile method in the presence of warp and weft or the like, and there are also combinations of strips and threads; wherein the method includes the operation of placing the polymer product containing the counterfeit protection element (s) on a paper pulp web during the paper manufacturing process; said papermaking method includes integrating one or more of the following operations in a papermaking process:
but. overlays so that one or more of said polymer products adhering to one or more counterfeit security elements adhere to a layer of wet paper pulp web after said layer is formed during the manufacturing process of said paper and ensuring temperature and time, sufficient to ensure the dissolution of said one or more polymer products in a layer of said wet paper pulp web, wherein each of said polymer products is made infused from a material that dissolves in water at a temperature ranging from 5 to 95 ° C;
b. overlays so that at least one layer made of one or more of said polymer products adhering to one or more counterfeit security elements adheres to a preformed wet pulp layer of the paper pulp after said wet cloth layer paper pulp is formed in the manufacturing process of the specified paper, while the specified polymer product is made of one or more polymers that do not dissolve in water at urine is lower than 50 ° C with the additional addition of a second layer of wet paper pulp on a non-coated side of a polymer product layer, additionally accompanied by further additions on an uncoated side of a second wet paper pulp layer of one or more layers of a polymer product, alternating this with a wet paper pulp layer . 2. The method according to claim 1, characterized in that
but. said polymer product carrying one or more counterfeit security elements is perforated or not perforated;
b. the specified polymer product is applied by placing the specified product on top of a wet canvas of paper pulp;
from. the specified polymer film contains one or more films (CWSF), soluble in cold water, this film is soluble in water at a temperature ranging from 5 to 50 ° C, and dissolves in it; hot water soluble film (HWSF), which is soluble in water at temperatures ranging from 5 to 95 ° C, insoluble hydrophilic film (NSHF) and insoluble non hydrophilic film (NSNHF) or a combination thereof in any sequence, including continuously repeating sequence, and
d. said polymer film has a thickness ranging from 5 to 150 microns, preferably from 10 to 70 microns, and more preferably from 15 to 35 microns,
e. the specified anti-counterfeiting element contains one or more of the following elements: (i) printed microtext, (ii) logo, (iii) metallized / demetallized particle / fiber, (iv) barcode, (v) watermark, (vi) nanoparticle, (vii) microtag chemical marker, (viii) DNA (synthetic or natural), (ix) counterfeit protection element that can be read by one or more special methods, a special device or a special machine containing ultraviolet rays, a computer, device for counting using a RFID device for identification; etc.,
f. said counterfeit security element is immersed / cramped / printed / glued or otherwise attached to or inside the polymer product. 3. The method according to claim 2, characterized in that
but. the water-soluble film is made of one or more materials selected from the group consisting of polyvinyl alcohol copolymer ionomers, polyvinyl alcohol homopolymer, non-ionomeric polyvinyl alcohol polymer, polymethacrylate, polyvinyl alcohol, polyacrylamide, polymethacrylamide, polyacrylic acid, polymetric acid, polymetric acid, polymetric acid film-forming and similar to polyethylene glycol, polyvinylpyrrolidone, protein binders such as gelatin, modified gelatins such as phthal oily gelatin, polysaccharides such as starch, gum arabic, pullulan and dextrin, and water-soluble cellulose derivatives or a combination thereof, wherein said cellulose derivatives contain methyl cellulose, hydroxypropyl cellulose, hydroxypropyl ethyl cellulose, hydroxyethyl cellulose methyl carboxy;
b. insoluble hydrophilic film (NSHF) is made from biodegradable materials, such as PLA (polylactic acid), from PHA (polyhydroxyalkanoic acid), from thermoplastic starch materials or biodegradable polyesters such as ecoflex;
from. insoluble non-hydrophilic film (NSNHF) is made of one or more materials selected from the group consisting of PP (polypropylene), PE (polyethylene), LDPE (low density polyethylene), HDPE (high density polyethylene), LLDPE (linear low density polyethylene), from HIPS (high impact polystyrene), from HMHDPE (high molecular weight high density polyethylene), from BOPP (biaxially oriented polypropylene), etc .;
d. the polymer thread is made from one or more polymers, including polyvinyl alcohol. 4. The method according to claim 1, characterized in that
but. said combination of polymer products to be applied to a wet paper pulp web is a combination of a film soluble in cold water inserted between / poured between / coated with strips of film, soluble in hot water or strips of insoluble hydrophilic film, or vice versa, or
b. the specified polymer product has the form of a bundle in which one or more polymer strips or polymer filaments are intertwined in a textile manner in the presence of warp and weft. 5. The method according to claim 4, characterized in that
but. the width / size of the strips of the polymer film varies from 3 to 15 mm, preferably from 4 to 10 mm and preferably from 5 to 7 mm;
b. the size of the polyvinyl acetate yarn is in the range from 50 to 1000 denier, preferably from 150 to 700 denier, and more preferably in the range from 300 to 500 denier. 6. The method according to claim 1, characterized in that the product is applied to the wet pulp web of the paper during the molding process using the cylinder in the manufacture of paper, the method comprising the following operations:
but. filling the capacity of the incoming aqueous suspension of pulp;
b. forming a paper substrate on the outside of the rotating cylinder coated with a wire mesh;
from. layering a pre-formed polymer film into which the anti-counterfeit security element (s) is immersed / cramped / imprinted (s) on a pulp fiber bed on a squeeze roller;
d. passing the structure through evacuation boxes to remove excess water from the pulp formation;
E. Passing the structure through a press roll to remove excess water, followed by transferring the structure to dryers for further evaporation of moisture from the paper web. 7. The method according to claim 1, characterized in that the polymer product is applied to the wet paper pulp web during the process of using the paired forming devices in the manufacture of paper, the method comprising the following operations:
but. the formation of the first layer of the web of wet paper using the first forming device on a continuously moving tape;
b. inclusion of a preformed one or more polymer products, of which at least one carries one or more counterfeit protection elements by applying pulp fibers to the formation using a guide roller;
from. forming a second layer of wet paper with a second forming device on the uncoated side of the polymer product superimposed on the first layer;
d. passing the structure through the pressing section to remove excess water and then passing it to the dryers to further evaporate moisture from the paper web. 8. The method according to claim 1, characterized in that the polymer product is applied to the wet paper pulp web during the paper manufacturing process using the long-mesh paper machine, the paper manufacturing process using the long-mesh paper machine is well known to those skilled in the art of paper manufacturing, wherein the method comprises the following work steps:
but. filling the main container with paper pulp;
b. rotation of the wire mesh around the table of the long-mesh paper machine and suction boxes, at the bottom of the wire mesh using a small vacuum, remove water from the pulp;
from. layering a preformed one or more polymer products onto a pulp fiber bed in the area of the squeeze shaft of the pressing section where excess water is removed, followed by the paper web being sent to dryers to further evaporate moisture from the paper web. 9. The method according to claim 7, characterized in that said polymer product includes at least one product that remains intact between the first and second webs. 10. The method according to claim 7, characterized in that the polymer product includes at least one product that dissolves and is absorbed by the pulp fibers of the first and / or second fabric. 11. The method according to claim 6, or 7, or 8, characterized in that the polymer film contains a combination of at least two films, at least one film is soluble in water. 12. The method according to claim 1, characterized in that one or more counterfeit protection elements is contained in one or more films soluble in cold water, or in strips of films soluble in cold water and contained in a polymer product. 13. The method according to claim 1, characterized in that one or more counterfeit protection elements are contained in one or more films, soluble in hot water, or insoluble hydrophilic films (NSHF), or insoluble non-hydrophilic films (NSNHF) or bands of HWSF, NSHF or NSNHF films contained in a polymer product. 14. Paper with anti-counterfeiting, made according to the method of claim 1. 15. Counterfeit paper made according to the method of claim 14, characterized in that the paper contains one or more layers. 16. The anti-counterfeiting paper of claim 15, having a polymer product comprising one or more counterfeit security elements on or between layers. 17. Paper with anti-counterfeiting according to 14, or 15, or 16, having one or more counterfeit security elements containing one or more means in the form of (i) printed microtext, (ii) logo, (iii) metallized / demetallized particles / metallized / demetallized fibers, (iv) barcode, (v) watermark, (vi) nanoparticles, (vii) microtag chemical marker, (viii) DNA (synthetic or natural), (ix) counterfeit protection element which can be read in one or more special ways in, a special device or special machine comprising ultraviolet rays, computer device for reading via RFID identification device; etc. 18. Counterfeit paper bearing one or more counterfeit security elements, in which a polymer that is soluble in water at a temperature ranging from 5 to 95 ° C is scattered across the width of the paper web; wherein said polymers contain one or more of them from the group consisting of: polyvinyl alcohol copolymer ionomers, polyvinyl alcohol homopolymer, non-ionic polyvinyl alcohol polymer, polymethacrylate, polyvinyl alcohol, polyacrylamide, polymethacrylamide, polyacrylic acid, polymethacrylic acid, polymethacrylic acid, polymethacrylic acid film forming materials and the like of polyethylene glycol, polyvinylpyrrolidone, protein binders such as gelatin, modified gelatins such as phthaloyl gelatin, isaccharides such as starch, gum arabic, pullulan and dextrin, and water-soluble cellulose derivatives and the like, wherein said counterfeit security element contains one or more means in the form of (i) printed microtext, (ii) logo, (iii ) a metallized / demetallized particle / metallized / demetallized fiber, (iv) a barcode, (v) a watermark, (vi) a nanoparticle, (vii) a microtag chemical marker, (viii) DNA (synthetic or natural), (ix) an element of protection against fakes that can be read one at a time or Olsha number of special methods, a special device or special machine comprising ultraviolet rays, computer device for reading via RFID identification device; etc. 19. Counterfeit paper having one or more counterfeit security elements having at least two or more alternating layers, said alternating layers containing at least one layer in each paper pulp web and polymer product , the specified polymer product containing a material that is selected from a polymer in the form of a polymer film, strip (s) of a polymer film, inserted / poured / forming a coating on a polymer film, polymer films and polymer threads, and combinations thereof and interlocked with each other individually in a textile manner with warp and weft, having a preferred thickness in the range of 5 to 150 microns, preferably in the range of 10 to 70 microns, and more preferably in the range of 15 to 35 microns, wherein anti-counterfeit paper has a thickness varying in specific gravity (GSM) of 110 g / m ² ; wherein said anti-counterfeiting element contains one or more means in the form of (i) printed microtext, (ii) a logo, (iii) a metallized / demetallized particle / metallized / demetallized fiber, (iv) a barcode, (v) a watermark, (vi) nanoparticles, (vii) a microtag chemical marker, (viii) DNA (synthetic or natural), (ix) counterfeit protection element, which can be read by one or more special methods, a special device or a special machine containing ul rafioletovye rays computer device for reading via RFID identification device; etc. 20. Anti-counterfeiting paper according to claim 19, wherein said polymer product is made of one or more materials containing an insoluble hydrophilic film (NSHF) made of biodegradable materials such as PLA (poly lactic acid), PHA (polyhydroxyalkanoic acid), thermoplastic starch materials or biodegradable polyesters, such as ecoflex, or insoluble non-hydrophilic film (NSNHF) made from materials such as PP (polypropylene), PE (polyethylene), LDPE (floor low density ethylene), HDPE (high density polyethylene), LLDPE (linear low density polyethylene), HIPS (high impact polystyrene), HMHDPE (high molecular weight high density polyethylene), BOPP (biaxially oriented polypropylene).

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