JP2010121251A - Anti-counterfeit paper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide anti-counterfeit paper having the highest anti-counterfeit effect. <P>SOLUTION: The anti-counterfeit paper is configured such that threads (2) watermarked in a sheet of paper are continuously exposed in the papermaking direction onto at least one paper side (10); further, preferably, the threads are also partly exposed onto the other paper side (11). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an anti-counterfeit paper having an improved anti-counterfeit effect by threads.

In general, a gold voucher is provided with a thread with a high anti-copying effect, such as a beer voucher or a travel voucher, with a hologram etc., and this thread is often attached to the paper surface of a gold voucher. It is attached.
However, if the thread is pasted in this way, it is easy to forge if only the thread is available. On the other hand, when the thread is drawn, it is difficult to make the thread itself in a general household, so that the forgery prevention effect can be enhanced.

  Therefore, as shown in Patent Document 1, in order to manufacture a cash voucher with a thread, as a final product, forgery prevention paper has been developed in which a thread is formed and intermittently exposed on one paper surface. .

  On the other hand, when the thread is engraved in this way, when the press roll is pressure-bonded to the paper surface and dehydrated in the anti-counterfeit paper forming process, the thread is exposed on the contact surface with the press roll. Depending on the length of the thread, the paper material around the thread may stick to the press roll. For this reason, when engraving a thread, it cannot be continuously exposed on the surface of the anti-counterfeit paper, and the design such as letters drawn on the exposed surface of the thread is limited. The anti-counterfeit effect by the design will be limited.

JP 2000-256994 A

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an anti-counterfeit paper having the highest anti-counterfeit effect.

  In order to solve the above-mentioned problem, the forgery-preventing paper according to the present invention as set forth in claim 1 is characterized in that a thread that has been made into paper is continuously exposed on the surface of at least one paper in the paper making direction. It is a feature.

  According to a second aspect of the present invention, in the first aspect of the present invention, the thread is partially exposed on the other paper surface.

  The invention described in claim 3 is the invention described in claim 1 or 2, wherein a plurality of the threads are provided.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the thread is in a state in which the paper is placed on both sides of the exposed surface by the paper making. It is what.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the thread is coated with an adhesive on both sides of the exposed surface and the entire unexposed surface. It is what.

  The invention described in claim 6 is characterized in that, in the invention described in any one of claims 1 to 4, an adhesive is applied to both sides of the thread respectively. It is.

  The invention according to claim 7 is the invention according to claim 5 or 6, wherein the total width of the adhesive applied to both sides of the thread is 10% or more and 50% or less of the thread width. It is characterized by being.

  According to the anti-counterfeit paper according to any one of claims 1 to 7, since the thread is incorporated, imitation in a general household is difficult, and the anti-counterfeit effect can be enhanced. Furthermore, since the thread is continuously exposed in the paper making direction on at least one paper surface, the design such as letters drawn on the exposed surface of the thread is not limited, and the design property is A thing with a high forgery prevention effect can also be obtained from a viewpoint. Therefore, the maximum anti-counterfeit effect can be obtained by a synergistic effect of the anti-counterfeit effect by the technique of engraving and the anti-counterfeit effect by expanding the selection range of the design.

  In particular, when the thread is partially exposed on the other paper surface, the thread on both sides of the thread exposed on one surface and the thread exposed on the other surface is synergistically counterfeit. Similarly, it is possible to obtain a synergistic anti-counterfeit effect by providing a plurality of threads, that is, to increase the anti-counterfeit effect exponentially by increasing the number of threads. it can.

  In addition, when the paper is placed on both sides of the thread, the lines on both sides have an irregular shape, so that it is possible to obtain an effect that it is more difficult to forge. Furthermore, the adhesive can be applied to both sides and non-exposed surfaces of the thread, or only to both sides of the thread, so that the thread can be prevented from falling off. Even so, it is possible to prevent the occurrence of problems such as formation of scratches or partial peeling of the anti-counterfeit paper by closely contacting the thread.

In addition, by making the total width of the adhesive applied to both sides of the thread to be 10% or more and 50% or less of the thread width, the problem of the above-mentioned thread falling off or the dryer As a result, it is possible to obtain the anti-counterfeit paper having the highest anti-counterfeit effect as described above.

Two embodiments of the anti-counterfeit paper according to the present invention will be described with reference to FIGS. 1 (A) and 1 (B) and FIGS. 2 (A) and 2 (B).
1 (A) to 2 (B) are plan views or bottom views of sheets that are integrally formed with two anti-counterfeit papers 1 aligned in a direction perpendicular to the paper making direction. It is.
[First Embodiment]

  As shown in FIGS. 1A and 1B, the anti-counterfeit paper 1 of this embodiment is a rectangular paper in which one thread 14 is made along one outer edge 1a extending in the paper making direction. The thread 14 is formed on the surface (one paper surface) 10 of the anti-counterfeit paper 1 so as to be exposed over the entire length (continuously) in the paper making direction. No. 16 is an irregular wavy line with a border line with paper in a state where the paper is loaded.

As the thread 14 to be engraved, a hologram thread with a hologram, a paster processing thread with paster processing, a printing processing thread with printing processing such as characters and decorations, a temperature indicating thread that changes color with temperature, A thread with micro characters or a glittering thread for displaying micro characters is used. The thread 14 can be used as long as it is 1 mm or more including a wide one of 5 mm or more, and the thread 14 is forged in a state where an adhesive is applied to both sides of the exposed surface and the entire unexposed surface. The total width of the adhesive applied on both sides of the prevention paper 1 is 10% or more and 50% or less of the width of the thread 14.
[Second Embodiment]

Next, the forgery prevention sheet of the second embodiment will be described with reference to FIGS. 2A and 2B.
The anti-counterfeit paper 1 according to the present embodiment is a rectangular paper in which a plurality of (two in the present embodiment) threads 14 are formed along one outer edge 1a extending in the paper making direction. These threads 14 are formed on the surface (one surface) 10 of the anti-counterfeit paper 1 so as to be exposed over the entire length in the paper making direction (continuously). The border line with the paper is irregularly wavy with the stock placed on the surface 10 side of the prevention paper 1.

  As the thread 14 to be incorporated, a hologram thread, a paster processing thread, a printing thread, a temperature indicating thread, a thread with micro characters, a glitter thread, and the like are used as in the first embodiment. These threads 14 can be used as long as they are 1 mm or more inclusive of those having a width of 5 mm or more, and are made on the anti-counterfeit paper 1 with adhesives applied to both sides of both sides thereof. The total coating width of the adhesive on both sides is 10% or more and 50% or less of the thread 14 width.

  Further, these threads 14 are also intermittently (partially) exposed in the longitudinal direction on the back surface (the other paper surface) 11 of the anti-counterfeit paper 1, and the back surface 11 also has paper on both sides 15 and 16. The border line with the paper is irregular with the charge on it.

  The present invention is not limited to the above-described embodiment. For example, the thread 14 according to the first embodiment may be intermittently exposed on the back surface 11 of the anti-counterfeit paper 1 in the paper making direction. One of the two threads 14 of the second embodiment is exposed on the front surface 10 over the entire length in the paper making direction, and is intermittently exposed on the back surface 11 in the paper making direction, and the other is intermittently exposed on the front surface 10 in the paper making direction. In addition, the back surface 11 may be exposed over the entire length in the paper making direction, and both the threads 14 may not be exposed to the back surface 11.

Next, a manufacturing method of the above-described anti-counterfeit paper 1 and a gift certificate 1 which is a final product obtained using the same will be described with reference to FIGS. 3 (A) to 6 (B).
In the method for manufacturing anti-counterfeit paper according to the present embodiment, first, the prepared paper stock is introduced into the flow box 3 as shown in FIG. At that time, as this paper, wood pulp such as softwood bleached kraft pulp (NBKP), hardwood bleached kraft pulp (LBKP), softwood bleached sulfite pulp, and non-wood pulp made from hemp, cotton, straw, etc. Mix and beat as appropriate, filler, dry paper strength enhancer, wet paper strength enhancer, sizing agent, fixing agent, yield improver, drainage improver, antifoaming agent, dye, coloring pigment, fluorescent agent, etc. Is added as appropriate so that the freeness is 600 to 150 ml C.I. S. F, preferably 400-250 ml C.I. S. Those prepared so as to be in the range of F are used.

  Next, the prepared stock is supplied to the wire part 4 at a uniform concentration by being diluted with a large amount of water in the flow box 3, and forms a paper layer while being dehydrated in the wire part 4.

Here, the wire part 4 is provided with a plurality of (three tanks in the present embodiment) circular net paper machines 41, 42, 43 from the upstream side to the downstream side along the conveying direction of the felt 40. The circular net paper machine 41 includes a circular net cylinder 46 disposed in the stock tank 45 in which the above-described thinned stock is stored, and an impression cylinder 49 that presses the felt 40 against the circular net cylinder 46. It has been. Similarly, the circular mesh paper machine 42 includes a circular mesh cylinder 47 disposed in the stock tank 45 in which the above-described thinned stock is stored, and an impression cylinder 49 that presses the felt 40 against the circular mesh cylinder 47. The circular mesh paper machine 43 includes a circular mesh cylinder 48 disposed in the stock tank 45 in which the thinned stock is stored, and an impression cylinder that presses the felt 40 against the circular mesh cylinder 48. 49.
For this reason, a paper web from the back surface 11 side to the front surface 10 side is sequentially laminated on the felt 40 by the circular paper machines 41, 42, 43 from the upstream side to the downstream side in the transport direction to form a wet paper web. .

  Therefore, the wire part 4 for manufacturing the anti-counterfeit paper 1 of the first embodiment has a paper layer on the most surface 10 side on the felt 40 in the downstream paper machine 43 as shown in FIG. A thread insertion device 44 for feeding the thread 14 is installed at a position immediately before formation, that is, a position immediately before the circular cylinder 48 contacts the impression cylinder 49. A die 48a is provided on the outer periphery of the circular cylinder 48. Is provided. In order to expose the thread 14 over the entire length in the paper making direction, the mold 48a is molded so that the paper material adheres to the surface portion of the threaded cylinder 48 to be exposed and the paper layer is not formed. It is configured by being continuously performed in the paper making direction.

  Here, the sled insertion device 44 applies the adhesive evenly to both sides 15 and 16 of the exposed surface of the sled 14 and the entire non-exposed surface of the sled 14, that is, the entire facing surface exposed to the front surface 10 side. The thread 14 is fed in the finished state, and the total coating width of the adhesive on the side portions 15 and 16 of the thread 14 is 10% or more and 50% or less of the thread 14 width.

  On the other hand, as shown in FIG. 6B, the wire part 4 for manufacturing the anti-counterfeit paper 1 of the second embodiment is a position immediately before the circular cylinder 48 contacts the impression cylinder 49 as in the first embodiment. A thread insertion device 44 is installed, and a die 48 a for exposing the thread 14 over the entire length in the paper making direction is attached to the outer periphery of the circular cylinder 48. Further, convex molds 46a and 47a for preventing the thread layer 14 from being formed on the outer periphery of the circular cylinders 46 and 47 in order to intermittently expose the thread 14 on the back surface 11 when the paper layer is formed. Are attached at intervals in the circumferential direction (that is, the paper making direction).

  In the second embodiment, the thread insertion device 44 feeds the thread 14 in a state where adhesive is applied to both side portions 15 and 16 on both sides of the thread 14.

  As a result, in the wire part 4, a wet paper in which the thread 14 is formed between the paper layers on the felt 40 is formed. At that time, the total thickness of the paper layer where the thread 14 has been engraved acts on the wet paper by the thickness of the paper layer formed by the circular net paper machine 43 and the circular cylinder 48 and the impression cylinder 49. Depending on the pressure and the like, the thread 14 is prepared so as to be 60% or more and 80% or less of a portion where the thread 14 is not engraved.

  This is because when the total thickness of the paper layer in the portion where the thread 14 is engraved exceeds 80% of the portion where the thread 14 is not engraved, the thickness of the thread 14 is not absorbed and the surface of the thread 14 is prevented from forgery. If the sheet 1 protrudes outward from the surface 10 of the sheet 1 and there is a step of winding it into a roll in the manufacturing process, it may cause a problem. In addition to this, a tensile stress or the like acts between the thread 14 and the paper layer, so that wrinkles may be formed on the paper layer. On the other hand, if it is less than 60%, the surface of the thread 14 enters the inner side of the surface 10 of the anti-counterfeit paper 1 and causes troubles when winding up in a roll shape. There is a risk that wrinkles will be formed on the paper layer due to tensile stress etc.

  Next, the wet paper web transported from the wire part 4 together with the felt 40 is directly introduced into the press part 5 in a state in which the water content is adjusted to 60 to 90%, preferably 60% to 75%, and two rotating rolls. By moving between 50, it is squeezed by roll pressure and dehydrated. As a result, the wet paper immediately after dehydration is prepared with a moisture content of 40% to 60%.

  Thus, the reason for preparing so that the moisture content of the wet paper immediately before being introduced into the press part 5 is 60% or more is as follows. That is, when the moisture content immediately before the press part 5 is less than 60%, it is dried to a moisture content of less than 60% with the wet paper moving relatively freely on the wire part 4 before the press part 5. This means that the paper has been dried without being in tension, and the resulting paper has poor dimensional stability. Also, the amount adjusted to be 90% or less is that if it exceeds 90%, there is too much moisture when moving between the rotating rolls 50, and the surrounding paper layer on the thread 14 is also included in the rotating rolls 50. This is because not only there is a possibility that wrinkles may be formed on the paper layer due to adhesion, or the paper layer may wave, but also there is a possibility that the paper layer may peel off.

The wet paper dehydrated in the press part 5 in this way is introduced into the dryer part 6 having a large number of rotating cylinders 60 acting as a dryer, and is dried by the heat of each rotating cylinder 60 while being transported between the rotating cylinders 60. Then, in the calendar part 7, the front surface 10 and the back surface 11 become smooth.
At that time, when the thread 14 is sent out from the insertion device 44, the wet paper is only applied to both sides 15 and 16 of the exposed surface of the thread 14 and the entire non-exposed surface in the first embodiment, and the thread 14 in the second embodiment. Since the adhesive is applied only to both side portions 15 and 16 of both sides of the thread, the total width of the adhesive applied to the side portions 15 and 16 of the thread is particularly 10% to 50% of the thread width. Therefore, even if it contacts the rotating cylinder 60, peeling or the like cannot occur.

  The reason why the wet paper immediately after being dehydrated by the press part 5 is prepared so as to have a water content of 40% or more is as follows. That is, if water is squeezed so that the water content is less than 40%, it is necessary to increase the pressure of the rotating roll 50. As a result, the wet paper is crushed by excessive pressure, and the thickness is reduced. This is because problems such as lowering of the design value or collapse of the wet paper are caused. In addition, defects such as blisters or shadow marks or felt marks are likely to occur. On the other hand, if it exceeds 60%, the dehydration is insufficient and the dryer part 6 adheres to the rotating cylinder 60, so that wrinkles are formed on the paper layer or the paper layer may be wavy. This is because there is a risk of peeling as well.

Next, a number of anti-counterfeit papers 1 are obtained by being cut out by a cutter 8 to be a sheet. As shown in FIG. 1 (A) and FIG. 1 (B) or FIG. 2 (A) and FIG. 2 (B), the anti-counterfeit paper 1 is multi-faced on each sheet. Next, the sheet made of the forgery-preventing paper 1 is printed by a printing means (not shown), and the outer edge 1a is cut, whereby FIG. 3 (A) and FIG. 3 (B) or FIG. A gift certificate 2 shown in (A) and FIG. 4 (B) is obtained.
It should be noted that the outer edge 1a is not actually displayed on paper, but is illustrated for convenience of explanation. Of course, the outer edge 1a is not limited to one, and a plurality of outer edges 1a may exist.

  The gift certificate 2 of the first embodiment shown in FIGS. 3A and 3B and the gift certificate of the second embodiment shown in FIGS. 4A and 4B obtained as described above. 2, not only the thread 14 is formed along one outer edge 2a extending in the longitudinal direction, but also the paper 14 is placed on both sides 15 and 16 of the thread 14 so that the thread 14 and the paper Since the boundary line is in an irregular state, it is difficult to reproduce in a general household and the effect of preventing forgery is high. In addition, the thread 14 fed from the thread insertion device 44 is drawn into the wet paper in a state where the thread 14 is exposed over the entire length in the longitudinal direction by the die 48a on the outer circumference of the circular mesh cylinder 48, and the thread 14 is exposed to the full length. Since the gift certificate 2 is obtained, the design of characters and the like drawn on the exposed surface of the thread 14 is not limited, and the effect of preventing forgery is high from the viewpoint of design.

  The gift certificate 2 in which the thread 14 is exposed in this way is obtained because the thickness of the paper layer formed by the circular net paper machine 43 and the circular net cylinder 48 when the thread 14 is fed from the thread insertion device 44. Due to the pressure acting on the wet paper by the impression cylinder 49, the thickness of the paper layer in the portion where the thread 14 is made is 60% to 80% of the portion where the thread 14 is not made. In addition, the wet paper immediately before being introduced into the press part 5 is prepared to have a water content of 40% to 60%, and the wet paper immediately after being dehydrated by the press part 5 is prepared to have a water content of 40% to 60%. Therefore, this is a result that the paper layer can be prevented from peeling off.

  In particular, in the gift certificate 2 of the second embodiment, since the thread 14 is intermittently exposed in the longitudinal direction also on the back surface 11, the design of the thread 14 exposed on the front surface 20 and the back surface 21 are intermittently exposed. A synergistic anti-counterfeiting effect can be obtained by the design of the thread 14 on both sides of the exposed design of the thread 14. Further, the gift certificate 2 has two threads 14 incorporated therein, and the effect of preventing counterfeiting can be increased exponentially by increasing the number of threads 14. When the paper making direction is not the longitudinal direction of the anti-counterfeit paper 1 but the direction along the outer edge in the short direction, the thread 14 is exposed along the outer edge in the short direction of the gift certificate 2. However, also in this case, it is possible to obtain the forgery preventing effect that is not so inferior to the case where the full length is exposed along the outer edge 2a in the longitudinal direction of the gift certificate 2.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram illustrating a forgery prevention sheet 1 according to a first embodiment of the present invention, and is a plan view of a sheet of paper on which two forgery prevention sheets 1 are integrally formed. FIG. 1B is a bottom view of FIG. 1A. It is explanatory drawing explaining the forgery prevention paper 1 of 2nd Embodiment which concerns on this invention, Comprising: It is a top view of the sheet paper in which the two forgery prevention paper 1 was integrally formed. FIG. 1B is a bottom view of FIG. 1A. It is a top view of the gift certificate which is the final product obtained using the forgery prevention paper of 1st Embodiment which concerns on this invention, ie, the forgery prevention paper of FIG. It is a bottom view of FIG. 3A. It is a top view of the gift certificate which is the final product obtained using the forgery prevention paper of 2nd Embodiment which concerns on this invention, ie, the forgery prevention paper of FIG. FIG. 4B is a bottom view of FIG. 4A. It is a schematic diagram which shows the manufacturing apparatus of the forgery prevention paper shown to FIG. 1A and FIG. 1B and FIG. 2A and FIG. 2B. It is the elements on larger scale which expanded the wire part 4 of FIG. 5, Comprising: It is explanatory drawing of the wire part 4 which manufactures the forgery prevention paper of 1st Embodiment. It is explanatory drawing of the wire part 4 which manufactures the forgery prevention paper of 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Anti-counterfeit paper 1a One outer edge extended in the papermaking direction of anti-counterfeit paper 2 Gift certificate 2a One outer edge extended in the longitudinal direction of gift certificate 10 Front surface of anti-counterfeit paper 11 Back surface of anti-counterfeit paper 14 Thread 15, 16 Side of thread 20 Front side of gift certificate 21 Back side of gift certificate

Claims (7)

  A forgery-preventing paper, characterized in that threads formed on paper are continuously exposed in the paper making direction on at least one paper surface.   The anti-counterfeit paper according to claim 1, wherein the thread is partially exposed on the other paper surface.   The anti-counterfeit paper according to claim 1 or 2, wherein a plurality of the threads are provided.   The anti-counterfeit paper according to any one of claims 1 to 3, wherein the thread is in a state where a paper material is placed on both sides of the exposed surface by the paper making.   The anti-counterfeit paper according to any one of claims 1 to 4, wherein an adhesive is applied to both sides of the exposed surface of the thread and the entire non-exposed surface.   The anti-counterfeit paper according to any one of claims 1 to 4, wherein an adhesive is applied to both sides of each side of the thread.   The anti-counterfeit paper according to claim 5 or 6, wherein the total width of the adhesive applied to both sides of the thread is 10% or more and 50% or less of the thread width.

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