EP1793039A1 - Antifälschungsmaterial mit darauf verteilten antifasern mit visueller charakteristik - Google Patents

Antifälschungsmaterial mit darauf verteilten antifasern mit visueller charakteristik Download PDF

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Publication number
EP1793039A1
EP1793039A1 EP05791528A EP05791528A EP1793039A1 EP 1793039 A1 EP1793039 A1 EP 1793039A1 EP 05791528 A EP05791528 A EP 05791528A EP 05791528 A EP05791528 A EP 05791528A EP 1793039 A1 EP1793039 A1 EP 1793039A1
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EP
European Patent Office
Prior art keywords
fake
fiber
color
part surface
observing
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EP05791528A
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English (en)
French (fr)
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EP1793039A4 (de
Inventor
Xianlin Sun
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Individual
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Individual
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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/355—Security threads
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/50—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by form
    • D21H21/52—Additives of definite length or shape

Definitions

  • This invention relates to an anti-fake material, such as anti-fake paper, or anti-fake film, or anti-fake package, especially an anti-fake material distributed with anti-fake fiber, which has visual characteristic that cannot be simulated by printing.
  • the anti-fake paper made by adding colored fiber into paper has a long history of nearly one hundred years, which has been used in many countries for producing paper money up to now, and also for manufacturing valuable securities, receipts, product' s specifications, printing labels and etc; and fluorescent fiber has been specially used in manufacture of almost all paper monies.
  • there are two kinds of anti-fake fibers generally, one is single fiber in one color and other is single fiber with several colors.
  • Chinese patent CN02168121.0 [An anti-fake fiber] revealed a single fiber with several colors of sections, that is, there are at least two colors along with its length direction.
  • the objective of this invention is to offer an anti-fake material that has anti-fake fiber distributed on it, from which different color patterns can be observed by changing the observing angle to the fiber and of which its visual characteristics cannot be simulated by current printing technologies.
  • Another objective of this invention is to offer an anti-fake fiber.
  • its special part surface is presented on at least one surface of the anti-fake material, on the surface the observer can respectively and separately see different color patterns on this special part from different observing angles. Therefore, if it is used in anti-fake material, current printing technology has no way to simulate.
  • This invention also provides several anti-fake fibers, the surface of special part of these anti-fake fibers can naturally present on at least one surface of the anti-fake material in the process of the anti-fake material manufacture.
  • This special part makes observer respectively and separately see the different color patterns on the special part from different observing angles on the surface. Therefore, if it is used in anti-fake material, current printing technology has no way to simulate.
  • the first objective of this invention is realized by that: an anti-fake material, on which anti-fake fiber is distributed; part surface of the said anti-fake fiber is presented on the surface of the said anti-fake material with characteristics of that: the said part surface has its concave-convex shielding structure on it, on which there are at least two color patterns A and B distributed, the said at least two color patterns A and B on the said part surface have obvious visual difference, therefore on the anti-fake material' s surface with presence of the said part surface, when observing the said part surface from different observing angles, the color patterns A and B can be seen respectively.
  • the at least two color patterns on the anti-fake fiber distributed in the anti-fake material revealed in this invention include color patterns appeared under visible light, UV-ray, IR-ray and other invisible rays.
  • the anti-fake material of this invention can perform the first-level anti-fake identification, that is the public anti-fake identification; for the color patterns appeared under UV-ray, IR-ray and other invisible rays, they can be judged by using special tools to perform the second-level anti-fake identification.
  • very thin anti-fake fiber (generally, the diameter of the fiber is smaller than 100 ⁇ m) is distributed in the anti-fake material in this invention, on which the concave-convex shielding structure is arranged, and the concave-convex shielding structure is located on the said part surface of the anti-fake fiber and this part surface can be presented on at least one surface of the anti-fake material, there is obvious visual difference between the said at least two color patterns on the said part surface, therefore, because of the shielding of the concave-convex structure, observer can respectively and separately see the color patterns on the part surface from different observing angles on the surface of the anti-fake material, by which the anti-fake effect can be realized.
  • the visual difference is in diversity, which is produced by color patterns being respectively and separately seen due to the at least two color patterns on the anti-fake fiber distributed in the anti-fake material revealed in this invention being shielded by the concave-convex shielding structure, it could be that: there are at least two observing angles a and b existed on the anti-fake material surface with presence of the said part surface, the color pattern A can be seen if observing the said part surface of the anti-fake fiber from the observing angle a but the pattern B cannot be seen because it is shielded by the concave-convex shielding structure on the part surface of the anti-fake fiber, and the color pattern B can be seen if observing the said part surface of the anti-fake fiber from the observing angle b but the pattern A cannot be seen because it is shielded by the concave-convex structure on the part surface of the anti-fake fiber; it could also be a different visual effect formed by one color pattern shielded incompletely
  • the other objective of this invention is realized by that: an anti-fake fiber inserted into the said anti-fake material, which has a part surface able to be presented on one surface of the said anti-fake material, with characteristics of that: the said part surface has a concave-convex shielding structure on it, at least two color patterns A and B are distributed on the part surface, the color patterns A and B have obvious visual difference on the said part surface to make person respectively see the color patterns A and B if observing the said part surface from different observing angles on the anti-fake material with presence of the said part surface.
  • the concave-convex shielding structure arranged on the anti-fake fiber in this invention and the concave-convex shielding structure arranged on the part surface of the anti-fake fiber able to be presented on one face of the anti-fake material, and because of shielding by the concave-convex shielding structure, observer can respectively and separately see this special part from different angles on the special surface-the color patterns with visual difference on the part surface.
  • such visual difference caused by its stereo structure cannot be simulated by current printing technologies.
  • the purpose of this invention to naturally present the special part of the anti-fake fiber on at least one surface of the anti-fake material is to control certain surface of the anti-fake fiber towards to visible surface of the anti-fake material.
  • the anti-fake fiber surface parallel to the maximum projection of the anti-fake fiber can naturally present on at least one surface of the anti-fake material, there are three ways to realize it: first method is to coat a flat transparent material on the outside of the anti-fake fiber, and simultaneously to arrange the said part surface of the anti-fake fiber towards to the flat surface of the transparent material, in this way, the flat surface of the flat fiber can naturally be parallel to the visible surface of the anti-fake material to make the needed part surface present on the visible surface of the anti-fake material.
  • the second method is to bend or crook the anti-fake fiber, simultaneously with certain toughness, and to locate the said part surface on the bended or crooked outside surface, in this way, the anti-fake fiber can be presented on the visible surface of the anti-fake material in its self-bended or crooked status.
  • the third method is to make the cross section of whole or part length of the anti-fake fiber into flat shape, to locate the said part surface of the anti-fake fiber onto the flat surface at the flat cross section part or on the anti-fake fiber' s surface having the same direction as the flat surface.
  • the flat surface can be towards to the visible surface when naturally adding into the anti-fake material; for the fiber with its part length in flat cross section, the flat part can be towards to the visible surface, its other part with the same direction corresponded to the flat surface can naturally follow towards to the visible surface.
  • Figure 1 shows one enlarged anti-fake fiber 2 distributed in the anti-fake material 1, the part surface 3 of the anti-fake 2 is presented on the surface 1' of the anti-fake material, the part surface 3 has its concave-convex shielding structure on it, in this Figure the concave-convex shielding structure is constituted of triangle element contained in the cross section 4 of the anti-fake fiber 2, its top angle and its bevel side' s surface of the triangle element constitutes a concave-convex shielding structure, surfaces 3' and 3" of these two bevel sides constitute the part surface 3, the color pattern A is distributed on the surface 3' and the color pattern B on the surface 3", if observing the part surface 3 from different observing angles on the surface 1' of the anti-fake material 1, it is possible to respectively and separately see the color patterns A and B, for example, if observing from a, it is possible to see the color pattern A, and from b to see the color pattern B, because of the difference between the
  • the color patterns A and B can be respectively or jointly distributed on the surfaces 3' and 3" fully to make more obvious visual difference. If observing the part surface 3 from different observing angles on the surface 1' of the anti-fake material 1, if observing the part surface 3 from a to b in the direction vertical to the anti-fake fiber 2, there is at least an observing angle c located between two color patterns A and B, from which either the color pattern A or the color pattern B can be seen, because the anti-fake fiber 2 is very thin generally, therefore an pattern combined by the color patterns A and B can be seen generally from the observing angle c.
  • the at least two color patterns on the anti-fake fiber distributed in the anti-fake material revealed in this invention include color patterns being able to appear under visible light, UV-ray, IR-ray and other invisible rays.
  • the anti-fake material of this invention can perform the first-level anti-fake identification, that is the public anti-fake identification; for the color patterns appeared under UV-ray, IR-ray and other invisible rays, they can be judged by using special tools to perform the second-level anti-fake identification.
  • very thin anti-fake fiber 2 (generally, the diameter of the fiber is smaller than 100 ⁇ m) is distributed in the anti-fake material 1 in this invention, on which the concave-convex shielding structure is arranged, and the concave-convex shielding structure is located on the said part surface 3 of the anti-fake fiber and this part surface 3 can be presented on at least one surface of the anti-fake material, therefore, because of the shielding function of the concave-convex structure, observer can respectively and separately see the different color patterns on the part surface from different observing angles on the surface of the anti-fake material with results of obvious visual difference, by which the anti-fake effect can be realized.
  • the visual difference of this invention is in diversity:
  • the at least two color patterns A and B of the anti-fake fibers distributed in the anti-fake material in this invention are shielded by the concave-convex structures and are able to be respectively seen to result in a visual difference that is in diversity, such visual difference is related with different visions caused by the color patterns differently distributed on the part surface of the anti-fake fibers with different concave-convex shielding structures located on it.
  • the embodiment shown in Figure 1 indicates a color pattern distribution that can be completely shielded by the concave-convex structure with each other, because of the shielding structure extended along with length direction of the anti-fake fiber 2, thus only can the different visions vertical to the length direction of the anti-fake fiber be markedly changed under shielding.
  • the anti-fake fiber 2 is a very thin and fine, it is recommended to have the maximum cross section diameter of the anti-fake fiber not over than 0.25 mm, thus visible width of the anti-fake fiber, if observing vertically to the length direction of the anti-fake fiber 2, is very limited, so when converting from observing angle a to observing angle b, an obvious visual difference can be produced only if there is difference between the color patterns A and B, it is the only way for such difference possibly felt by common person.
  • this embodiment it is the merit of this embodiment to make normal eyesight feel large change only based on difference between the color patterns A and B, preferably this difference is only in different colors, but also could be in the same color but in different patterns, and in addition also could be different both in color and pattern.
  • the color pattern A can be seen if observing the said part surface of the anti-fake fiber from the observing angle a, but the color pattern B cannot be seen because it is shielded by the concave-convex triangle structure on the part surface 3 of the anti-fake fiber 2; and the color pattern B can be seen if observing the said part surface 3 of the anti-fake fiber 2 from the observing angle b, but the color pattern A cannot be seen because it is shielded by the concave-convex triangle structure on the part surface 3 of the anti-fake fiber 2; for the second-level anti-fake by using fluorescent fiber, IR fiber and etc., that is, observing by using tools, this embodiment may unnecessarily be limited by the difference between the color patterns A and B, for example, the color patterns A and B can be completely the same ones within normal eyesight scope but one of them
  • the concave-convex shielding structure is arranged on the part surface 3 of the anti-fake fiber 2 in a way to form a pattern completely separated between the color patterns A and B without any overlapping with each other, thus a vision effect of shielding each other is realized.
  • the obvious visual difference of the at least two patterns A and B on the part surface 3 can also have a different visual effect formed by one color pattern A unable to be shielded completely and other color pattern B able to be shielded completely, such visual effect is often resulted by incorporate relationship of the color patterns, for example, the color pattern A is completely or partly incorporated in the color pattern B, that is, if observing the part surface 3 of the anti-fake fiber from observing angle a, the eyesight can only see the color pattern A because the concave-convex shielding structure on the part surface 3 of the anti-fake fiber shields the color pattern B completely; if observing the part surface 3 of the anti-fake fiber from observing angle b, the eyesight can see the color pattern B because of the concave-convex shielding structure on the part surface 3 of the anti-fake fiber, but the color pattern A is completely or partly not shielded.
  • the color patterns A and B for forming such visual difference must be different; at least the colors of
  • the color patterns A and B could be two patterns with their some parts overlapped partly, that is, if observing the part surface 3 of the anti-fake fiber from observing angle a, the eyesight can see that the color pattern A only shields a part of the color pattern B because of the concave-convex shielding structure on the part surface 3 of the anti-fake fiber; if observing the part surface 3 of the anti-fake fiber from observing angle b, the eyesight can see that the color pattern A only shields a part of the color pattern B because of the concave-convex shielding structure on the part surface 3 of the anti-fake fiber.
  • the pattern in human's eyes could be a composed pattern incorporated a part of the color pattern B into the color pattern A, but not a pattern simply incorporated the color pattern B fully into the color pattern A or simply incorporated the color pattern A fully into the color pattern B.
  • the patterns A and B for producing obvious visual difference shall be different, at least with different color feature.
  • At least two color patterns A and B could be the patterns composed of various single colored or multi-colored lines. Because the anti-fake fiber in this invention is very thin and fine, for the more practical first-level anti-fake identification, the more simple and direct it is, the more valuable it will be. Because the color feature is the easiest one for human to identify, so thereafter, two color patterns A and B in different colors will be explained in details.
  • the color pattern A and the color pattern B are colored line A and colored line B in parallel and with different color features, for example the colored line A is in red and the colored line B is in blue, if observing the part surface 3 of the anti-fake fiber from observing angle a, only can the red line be seen, but the blue line cannot be seen because it is shielded by the concave-convex shielding structure on the part surface 3 of the anti-fake fiber, thus the common person feels that the fiber is in red; if observing the part surface 3 of the anti-fake fiber from observing angle b, only can the red line be seen, but the blue line cannot be seen because it is shielded by the concave-convex shielding structure on the part surface 3 of the anti-fake fiber, thus the common person feels that the fiber is in red; if observing the part surface 3 of the anti-fake fiber from observing angle c, both of the red line and the blue line can be simultaneously seen, because the colored lines are very close with
  • the colored line A and the colored line B with different color features but in parallel are also parallel with the length direction of the anti-fake fiber. If its observing angle is changed, the full fiber will change its color from red to blue with unique visual conversion effect.
  • the converting angle from the angle a to the angle b should preferably be not more than 120 degree. In this visual feature design, the most obvious color change of the fiber happens when observing the fiber surface with changing angle at the position vertical to the length direction of the fiber.
  • Figure 2a and Figure 2b show the composed effect of A1, A2, A3 colors and the composed effect of B1, B2, B3 colors respectively to make the pattern A and the pattern B with different color features and in parallel.
  • the colors A1-A3 and the colors B1-B3 are respectively in strip shape and vertical to the length direction of the anti-fake fiber. In this visual feature design, the most obvious color change of the fiber happens when observing the fiber surface with changing angle at the position along with the length direction of the fiber.
  • Figure 3 shows the composed A1, A2, A3 colors and the composed B1, B2, B3 colors respectively to make the pattern A and the pattern B with different color features and in parallel.
  • the colors A1-A3 and the colors B1-B3 are respectively in strip shape and with a cross angle of 0 ⁇ 90° to the length direction of the anti-fake fiber.
  • the most obvious color change of the fiber happens when the observing position is first in slope with the length direction of the fiber, and then the observing angle is changed to observe the fiber' s surface.
  • the color pattern A and the color pattern B are the same in their patterns and also color features, but the color pattern A and the color pattern B have their different positions on the length direction of the anti-fake fiber, see Figure 4.
  • the color pattern A and the color pattern B are all in black
  • the color pattern A is located in front part of the fiber and is composed of A1, A2, A3 colors
  • the color pattern B is located in rear part of the fiber and is composed of B1, B2, B3 colors
  • Figure 5a- Figure 5g show the situations of the color pattern A and the color pattern B distributed radially, extended axially but having different positions in the length direction of the fiber.
  • the color pattern A and the color pattern B could be have their positions, fully overlapped, or partly overlapped, or partly lined, or separated with each other, in the length direction of the anti-fake fiber.
  • Figure 5a the color pattern A in strip shape is red in color and the color pattern B in strip shape is black in color, if the positions of the color pattern A and the color pattern B are fully overlapped axially, when changing angle to observe, the full fiber changes color from red to black, the fiber's position does not move visually, having unique visual conversion effect;
  • Figure 5b if the positions of the color pattern A and the color pattern B are partly overlapped axially, when changing angle to observe, visually the full fiber changes color from red to black and happens jumped position move, but the jumping is small, having unique visual conversion effect;
  • Figure 5c if the axial positions of the color pattern A and the color pattern B are linked, when changing angle to observe, visually the full fiber changes color from red to black and happens jumped position move, but the jumping is in form of head linked to tail;
  • Figure 5d if the axial positions of the color pattern A and the color pattern B are separated, when changing angle to observe, visually the full fiber changes color from red to black and happens jumped position move, but the jumping is in
  • Figure 5e shows the situation of the color pattern A and the color pattern B composed of different colors, its color could be a single-color, or a composition of multi-colors.
  • the color pattern A in strip shape is composed of two lines in different colors with head linked to tail, one line is red A1 and other line is green A2; the color pattern B is a black line, when changing angle to observe, visually the full fiber changes its color from double-color of red/green to single color of black, having unique visual conversion effect.
  • the color of the color pattern could be white, or blank, or the same color as that on the surface of the anti-fake fiber.
  • the color pattern A in strip shape is red
  • the color pattern B in strip is white and is distributed on the full convex surface 3" of the anti-fake fiber
  • the surface of the anti-fake material is in white, when changing angle to observe, the whole fiber changes from red to invisible status, having unique visual conversion effect.
  • the color pattern A in strip shape is black, and the color pattern B in strip is yellow and is distributed on the full convex surface 3" of the anti-fake fiber, if the surface of the anti-fake material is in yellow, when changing angle to observe, the whole fiber changes from black to invisible status, having unique visual conversion effect. Therefore, if the color of the color pattern B is in the same color as that on the surface of the anti-fake material, the cross section of the fiber can be designed to part or full color pattern B incorporated into the color pattern A visually, but the color pattern A cannot be incorporated into the color pattern B, see Figure 5g.
  • the concave-convex shielding structure is in diversity:
  • the concave-convex shielding structure is composed of a cross section of the anti-fake fiber, having at least one triangle element, the triangle element refers to a cross section structure with at least one top angle and two sides corresponded to it, its typical structure is a triangle section, but also can be a quadrilateral section or polygon's section.
  • the cross section in Figure 1 is a triangle, the color pattern A is located on face 3' related to one bevel side of the triangle and the color pattern B is located on face 3" related to another bevel side of the triangle.
  • the triangle is a typical concave-convex shielding structure to realize one color pattern presented and other color pattern shielded, and is also easy to meet the requirement of converting angle preferably not over than 120° when converting observation from the angle a to the angle b.
  • the concave-convex shielding structure is composed of multi-triangles in parallel, the composition of all the color patterns on the relative bevel side of each triangle constitutes the color pattern A and the composition of all the color patterns on the another relative bevel side of each triangle constitutes the color pattern B.
  • the concave-convex shielding structure made of single triangle is difficult to present on the surface of the anti-fake material just in a form of its top angle upwards, for this reason the triangle has to be made in flat form, but for such flat triangle, its sensitivity of the color pattern conversion is lower when changing its observing angle, and the color pattern A or the color pattern B is very thin and fine when the fiber is in certain width, which influences the visual effect. Therefore, the parallel-triangle composition design in this invention can overcome the above shortcoming.
  • Figure 6a- Figure 6b are the drawings for the anti-fake fiber 2 with single-triangle cross section in the anti-fake material 1, of which Figure 6a is a cross section drawing and Figure 6b is a plane drawing.
  • the anti-fake fiber 2 in the anti-fake material 1 is bended along with a equally-dividing axis between the said two sides, which ensures that: either both of surface A and surface B are presented simultaneously on the surface of the anti-fake material, or the surface corresponded to third side 6 is presented alone on the surface of the anti-fake material.
  • the equally-dividing axis is a virtual controlling axis that plays the same role in the all of the following drawings as that in Figure 6 series, its objective is to present the color pattern A and the color pattern B simultaneously on the surface of the ant-fake material 1.
  • the color of the surface corresponded to the third side 6 of the cross section is in white or the same as that on the surface of the anti-fake material 1.
  • Figure 7a- Figure 7c are the drawings for the anti-fake fiber with double-linked triangle cross section in the anti-fake material, of which Figure 7a is a cross section drawing, and Figure 7b and Figure 7c are their plane drawings. Because the anti-fake material has certain transparency, the triangle color pattern A and the triangle color pattern B presented on the surface of the anti-fake material are visible by eyes, when observing from angle a, the color pattern A (as a composed visual effect of A1+A2) can be seen but the color pattern B cannot be seen because it is shielded by the triangle; vice versa, when observing from angle b, the color pattern B (as a composed visual effect of B1+B2) can be seen but the color pattern A cannot be seen because it is shielded by the triangle.
  • the fiber in the anti-fake material can be bended along with the equally-dividing axis 5 (see Figure 3b) and can also be in a straight line (see Figure 3c), thus it can ensure that: either the surface with the color pattern A located on it and the surface with the color pattern B located on it are simultaneously presented on the surface of the anti-fake material 1, or the surface corresponded to the side 6 is presented on the surface of the anti-fake material 1 alone.
  • the actual effects of the structure are: 1.
  • the fiber In comparison to single-triangle, there is larger visual area when their fiber heights are the same, thus it is possible to be used into a very thin paper, for example the paper' s thickness is less than 50 ⁇ m; 2. Because of the fiber in flat form totally, when the fiber is shorter in its length with certain hardness, the fiber even if unnecessary to be bended can also ensure that: either the surfaces with the color patterns A and B located on them present on the surface of the anti-fake material 1 simultaneously, or the surface corresponded to the side 6 presents on the surface of the anti-fake material 1.
  • Figure 8a- Figure 8b are the drawings for the anti-fake fiber 2 with single-quadrilateral cross section in the anti-fake material 1, of which Figure 8a is a cross section drawing and Figure 8b is a plane drawing.
  • the anti-fake fiber 2 is bended along with the equally-dividing axis 5, its visual area in the anti-fake material 1 is reduced by one half if the fiber' s height is the same, but its merit is that: either which surface (either the surface with the color patterns A and B located on, or the surface with the color patterns A' and B' located on) is upwards, the fiber can all show color-change effect if the visual angle is changed. It is one of the selections for the paper or film with larger thickness.
  • Figure 9a- Figure 9c are the drawings for the anti-fake fiber 2 with three-linked quadrilateral cross section in the anti-fake material 1, of which Figure 9a is a cross section drawing, and Figure 9b and Figure 9c are their plane drawings.
  • Figure 9a is a cross section drawing
  • Figure 9b and Figure 9c are their plane drawings.
  • the fiber in flat form totally, when the fiber is shorter in its length with certain hardness, the fiber even if unnecessary to be bended can also ensure that the color pattern A (composed of A1, A2 and A3) and the color pattern B (composed of B1, B2 and B3) present on the surface of the anti-fake material simultaneously.
  • Figure 10a- Figure 10d are the drawings for the anti-fake fiber with trapezoid cross section in the anti-fake material, of which Figure 10a and 10b are their cross section drawings, and Figure10c and Figure 10e are their plane drawings.
  • the trapezoid has better stability, even though the surfaces with the color patterns A and B located on are in very sloped status (the more inclined it is, the much higher sensitivity will be), it is still very stable, especially when the fiber is shorter in its length with certain hardness, the fiber even if unnecessary to be bended can also ensure that the color pattern A and the color pattern B present on the surface of the anti-fake material simultaneously (see Figure 10c).
  • Figure 10a shows a trapezoid, in comparison with two-trapezoid composition shown in Figure 10b, its merit is that the fiber' s height in the paper is much smaller, in Figure 10a the color of the surface corresponded to the side 6 is in white or in the same color as that of the surface of the anti-fake material 1; but compared with Figure 10a, the arrangement shown in Figure 10b can produce color-changing effect regardless of which surface upwards and when changing its observing angle, so it is an alternation for paper or film with larger thickness; the surface corresponded to bottom side 6 of the trapezoid shown in Figure 10a is in white or in the same color as that on the surface of the anti-fake material 1.
  • Figure 11a- Figure 11f are the drawings for the anti-fake fiber coated with transparent material 7 in the anti-fake material 1, Because of the transparency of transparent material 7, the part surface 3 with the concave-convex shielding structure on the anti-fake fiber in this invention naturally presents on the surface of the anti-fake material.
  • Figure 11a and Figure 11b show that the fibers respectively with their cross sections of single-triangle or single-quadrilateral are coated with the round transparent material 7, the purpose is to increase the fiber' s compressive strength to further ensure the stability of the fiber' s cross section shapes in the process of paper making or in the process of adding plastics;
  • Figure 11c and Figure 11d show that the fibers respectively with their cross sections of single-triangle or single-quadrilateral are coated with the flat transparent material 7, the purposes are not only to increase its compressive strength to further ensure the stability of the fiber' s cross section shapes in the process of paper making or in the process of adding plastics, but also to ensure the A and B surfaces, even if the fiber is not bended, presented simultaneously on the surface of the anti-fake material;
  • Figure 11e and Figure 11f show that the fibers respectively with their cross sections of multi-triangle or multi-quadrilateral are coated with the flat transparent material 7, the purpose is to increase fiber' s compressive strength to further ensure the stability of the
  • Figure 12a- Figure 12e are the cross section drawings for the vacuum-coated aluminum layer with shielding function between the color pattern A and the color pattern B on the anti-fake fiber 2.
  • the colors interfere with each other between the color patterns A and B, resulting in seriously-influenced beauty of the color patterns A and B, and reduced visual difference between the color patterns A and B.
  • Figure 12a is a drawing of the fiber with its triangle cross section and an A1-coated layer 8 located in the middle position on the material, which is equal to a composition made of two fibers in different colors, the interface of this composition is coated by aluminum;
  • Figure 12b is a drawing of the fiber with its triangle cross section and an Al-coated layer 8 located on the fiber' s surface, after coating aluminum the fiber' s surface can also be adhered with a layer of color or is only kept with this aluminum layer;
  • Figure 12c is a drawing of the fiber with its quadrilateral cross section and an Al-coated layer 8 located in the middle position on the material, the interface between two different colors on this composition is coated by aluminum;
  • Figure 12d is a drawing of the fiber with its quadrilateral cross section and an A1-coated layer 8 located on the fiber' s surface, the A1-coated layer 8 is located on one side of the axis 5 on the surface, after coating aluminum the fiber' s surface can also be adhered with a layer of color
  • the said concave-convex shielding structure can be in arc shape, see Figure 13, and also can be in saw teeth shape or other irregular curve shapes.
  • the anti-fake materials are the organic films.
  • the reason for it is that the plastic films are difficult to tear and easy to melt with the anti-fake fibers, thus there is difficult to tear the plastic film or to pick the anti-fake fiber out for checking the anti-fake fiber.
  • the faker simulates the visual features via printing fine line, there is no simple way to verify. Because it is unnecessary to tear the plastic films for observing in this invention, it can be used in plastic film areas.
  • the anti-fake fiber is a fluorescent fiber, when illuminating via fluorescent lamp and changing observing angle, there will be obvious visible visual difference.
  • the anti-fake fiber is an IR fiber, when illuminating via IR-ray and changing observing angle, there will be obvious visible visual difference.
  • the way for controlling the part surface 3 of the anti-fake fiber presented on the surface of the anti-fake material is as follows:
  • the most important technique is to control efficient concave-convex shielding structure of the fiber being really presented on the surface of the anti-fake material in the practical production process.
  • Theoretical analysis and a large amount of experiments indicate that: in the paper making process, when the fiber has certain elastic hardness, the maximum projection area of the whole fiber shape will certainly present on the surface of the paper.
  • the projection area of the anti-fake fiber refers to the minimum square area corresponded to the projective line of the substance, that is, when the anti-fake fiber is in straight line and the fiber' s cross section is equivalent in the length direction, the minimum square area is the area of the projective lines of the substance, see the area covered by bevel lines in Figure 14a; when the anti-fake fiber is in straight line and the fiber' s cross section is not equivalent in the length direction, the minimum square area is the product area of the maximum width of the projective area of the anti-fake fiber substance and the length of the anti-fake fiber, see the area covered by bevel lines in Figure 14b; when the anti-fake fiber is in curve, the minimum square area is just the square area constituted of and covered by the projective lines of the bended substance of the anti-fake fiber, see the area covered by bevel lines in Figure 14c.
  • this invention designs especially as follows, these designs are also applicable to distribute the anti-fake fiber into a sandwich with a paper in it, or distribute it into a sandwich with a plastic film in it, or distribute it into a single-layer plastic film.
  • the anti-fake fiber 2 is in curve shape, the upward surface of the bended fiber is the part surface 3 of the anti-fake fiber, see Figure 15a and Figure 15b.
  • the maximum width c of the cross section of the anti-fake fiber, in its length direction and being parallel to the surface of the anti-fake material, is equal to or less than the maximum width d of the cross section being vertical to the surface of the anti-fake material, that is, the long axis d of the cross section in the length direction of the anti-fake fiber 2 is vertical to the surface of the anti-fake material, see Figure 15b, thus when the fiber is in bended status, its cross section, even if not in flat shape, can still expose the necessary part surface 3 of the anti-fake fiber onto the paper' s surface.
  • the maximum horizontally-surmounted length formed by the bended anti-fake fiber 2 is a geometrical width e, see Figure 15a, when this geometrical width is at least over twice of the long axis d of the cross section in the length direction of the anti-fake fiber, the bended anti-fake fiber 2 can completely present on the surface of the anti-fake material in its naturally-bended status.
  • the flat surface corresponded to the flat shape will present on the surface of the anti-fake material, see Figure 16.
  • the cross section of the anti-fake fiber 2 in its length direction can also be fully in flat shape, thus the flat surface corresponded to this flat shape will present on the surface of the anti-fake material.
  • the color of the flat part of the anti-fake fiber 2 is preferably blank or white in color, or the same color as that on the surface of the anti-fake material 1.
  • the materials of the anti-fake fiber in this invention can be organic or metal ones.
  • the anti-fake material in this invention refers to paper, or paper-board, or organic film.
  • the anti-fake fiber 2 can be sandwiched between two pulp layers, or between two organic films; or between pulp layer and other material layer; or between organic film layer and other material layer; or can be adhered onto the surface of an anti-fake material, or can be inserted into the surface of the anti-fake material in other ways.
  • Various concave-convex structures of the anti-fake fibers in this invention can be formed via dies.
  • the color patterns on the concave-convex structures can be prepared onto the anti-fake fibers by processes of adhering film, fine-printing, heat-pressing and etc.; for the color pattern with pure colors, it can be prepared first by jetting and then synthesizing, and also can be composed by heat pressing fibers in different colors.
  • the anti-fake fiber can be inserted into paper by directly adding it into pulp in the process of papermaking, and can also be done by pressing it into multi-layers of paper.
EP05791528A 2004-09-24 2005-09-23 Antifälschungsmaterial mit darauf verteilten antifasern mit visueller charakteristik Withdrawn EP1793039A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2004100096034A CN1600988A (zh) 2004-09-24 2004-09-24 一种防伪材料
PCT/CN2005/001543 WO2006032212A1 (en) 2004-09-24 2005-09-23 Anti-forge material distributed anti-fibers having visual character

Publications (2)

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EP1793039A1 true EP1793039A1 (de) 2007-06-06
EP1793039A4 EP1793039A4 (de) 2010-03-24

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US (1) US20080053633A1 (de)
EP (1) EP1793039A4 (de)
JP (1) JP2008520754A (de)
KR (1) KR100915724B1 (de)
CN (1) CN1600988A (de)
AU (1) AU2005287753A1 (de)
BR (1) BRPI0517324A (de)
CA (1) CA2581858A1 (de)
EA (1) EA011271B1 (de)
MX (1) MX2007003450A (de)
WO (1) WO2006032212A1 (de)
ZA (1) ZA200703314B (de)

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CN1632221A (zh) * 2004-12-29 2005-06-29 孙显林 一种防伪材料
TWM296160U (en) * 2006-02-24 2006-08-21 Min-San Huang Pattern with colorful variations
CN101519857B (zh) * 2008-02-29 2011-08-24 上海柯斯造纸防伪技术有限公司 激发光光角变化致荧光纤维变色的防伪纤维及防伪材料
KR20140008339A (ko) * 2011-01-11 2014-01-21 상하이 코스 시큐리티 페이퍼 테크놀로지 컴퍼니 리미티드 위조방지 섬유 및 상기 위조방지 섬유를 함유하는 위조방지 용지 및 그 제조방법
CN104099801A (zh) * 2013-04-10 2014-10-15 孙显林 一种防伪纤维及含有该防伪纤维的防伪纸
KR101469024B1 (ko) * 2014-07-16 2014-12-04 이동열 디자인 필름

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EP0490825A1 (de) * 1990-12-12 1992-06-17 - Sihl - Zürcher Papierfabrik An Der Sihl Sicherheitspapier für Banknoten oder dergl. und Verfahren zu seiner Herstellung
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JP2008520754A (ja) 2008-06-19
KR20070061890A (ko) 2007-06-14
CN1600988A (zh) 2005-03-30
US20080053633A1 (en) 2008-03-06
KR100915724B1 (ko) 2009-09-04
MX2007003450A (es) 2007-08-06
WO2006032212A1 (en) 2006-03-30
AU2005287753A1 (en) 2006-03-30
EA011271B1 (ru) 2009-02-27
EP1793039A4 (de) 2010-03-24
EA200700675A1 (ru) 2007-08-31
BRPI0517324A (pt) 2008-10-07
CA2581858A1 (en) 2006-03-30
ZA200703314B (en) 2008-09-25

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