WO2006032212A1 - Anti-forge material distributed anti-fibers having visual character - Google Patents

Anti-forge material distributed anti-fibers having visual character Download PDF

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Publication number
WO2006032212A1
WO2006032212A1 PCT/CN2005/001543 CN2005001543W WO2006032212A1 WO 2006032212 A1 WO2006032212 A1 WO 2006032212A1 CN 2005001543 W CN2005001543 W CN 2005001543W WO 2006032212 A1 WO2006032212 A1 WO 2006032212A1
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WO
WIPO (PCT)
Prior art keywords
fiber
counterfeit
color
security
color pattern
Prior art date
Application number
PCT/CN2005/001543
Other languages
English (en)
French (fr)
Inventor
Xianlin Sun
Original Assignee
Xianlin Sun
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xianlin Sun filed Critical Xianlin Sun
Priority to US11/663,725 priority Critical patent/US20080053633A1/en
Priority to AU2005287753A priority patent/AU2005287753A1/en
Priority to CA002581858A priority patent/CA2581858A1/en
Priority to EA200700675A priority patent/EA011271B1/ru
Priority to BRPI0517324-8A priority patent/BRPI0517324A/pt
Priority to EP05791528A priority patent/EP1793039A4/en
Priority to JP2007532751A priority patent/JP2008520754A/ja
Priority to MX2007003450A priority patent/MX2007003450A/es
Publication of WO2006032212A1 publication Critical patent/WO2006032212A1/zh

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Classifications

    • 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

  • the present invention relates to an anti-counterfeiting material such as a security paper or a security film or an anti-counterfeit package, and more particularly to an anti-counterfeiting material which is provided with anti-counterfeit fibers and whose printing cannot mimic its visual characteristics.
  • the above-mentioned colored fiber has a defect that the existing printing thin line can imitate its visual effect, and in order to accurately distinguish whether it is a fiber or a printing thin line, only the paper is torn or the fiber is picked out by a needle. This is not only inconvenient, but also commodities such as banknotes and valuable securities cannot be destroyed. Therefore, the anti-counterfeiting effect is greatly restricted. The counterfeiters often use the printed thin lines to imitate them.
  • An object of the present invention is to provide an anti-counterfeiting material in which anti-counterfeiting fibers are distributed, and by changing the viewing angle of the fibers, different color patterns of the fibers can be observed, so that the existing printing technology cannot imitate the sensation characteristics.
  • Another object of the present invention is to provide a security fiber which, when a specific portion of its surface is present on at least one side of the anti-counterfeiting material, enables the observer to separately see the unique portion on the face from different angles.
  • the color pattern is used in anti-counterfeiting materials to make the existing printing technology impossible to imitate.
  • the invention can also provide a plurality of anti-counterfeit fibers, and the special part of the surface of the anti-counterfeit fibers can be naturally presented on at least one surface of the anti-counterfeiting material during the manufacturing process of the anti-counterfeiting material, and the unique portion enables the observer to separately from different angles on the surface.
  • the different color patterns on the unique part are seen by themselves, and thus used in the anti-counterfeiting material, so that the existing printing technology cannot be imitated.
  • a first object of the present invention is achieved by: an anti-counterfeiting material having anti-counterfeit fibers distributed thereon, a part of the surface of the security fiber is present on the surface of the anti-counterfeit material, characterized in that the partial surface has a concave-convex shielding structure on which at least two color patterns are distributed and the at least two color patterns A and B are There is a clear visual difference on the surface of the part, so that when the surface of the part is observed from different angles on the surface of the anti-counterfeiting material presenting the part of the surface, the color patterns A and ⁇ can be respectively seen.
  • the at least two color patterns A and B of the security layer distributed in the anti-counterfeiting material of the present invention include color patterns appearing under visible light, ultraviolet light, infrared light, and other non-visible light.
  • the anti-counterfeiting material of the present invention can be Achieve first-line anti-counterfeiting, that is, public security;
  • special tools can be used to judge, and second-line anti-counterfeiting can be realized.
  • the present invention is provided with a fine anti-counterfeit fiber (generally having a fiber diameter of not more than 100 ⁇ m) disposed on the anti-counterfeit material, a concave-convex shielding structure is disposed, and the concave-convex shielding structure is located on the surface of the portion of the security fiber, and the surface of the portion can be presented On at least one surface of the security material, the at least two color patterns A and B have a distinct visual difference on the surface of the portion, so that the observer observes from different angles on the surface of the anti-counterfeit material, due to the occlusion of the concave-convex structure , you can see the color pattern of some surfaces separately, with anti-counterfeiting effect.
  • a fine anti-counterfeit fiber generally having a fiber diameter of not more than 100 ⁇ m
  • the at least two color patterns A and B of the anti-counterfeit fibers distributed in the anti-counterfeiting material of the present invention are obscured by the concavo-convex occlusion structure and are respectively seen to have various visual differences, which may be: a surface of the anti-counterfeiting material that presents the partial surface There are at least two observation angles a and b, and the color pattern A is seen when the surface of the security fiber is viewed from the a angle, and the color pattern B is blocked by the concave and convex shielding structure on the surface of the security fiber.
  • the color pattern B is seen and the color pattern A is blocked by the concave and convex occlusion structure on the surface of the security fiber; or a certain color pattern cannot be completely blocked and another pattern feature can be It is completely blocked to produce different visual effects; it can also be a visual transformation that is occluded in the direction along the length of the fiber.
  • a security fiber embedded in the above-mentioned anti-counterfeiting material having a partial surface capable of being present on one surface of the anti-counterfeit material, characterized in that: the partial surface has a concave-convex shielding structure, There are at least two color patterns A and B distributed thereon, and the color patterns A and B have significant visual differences on the surface of the portion, so that the surface of the surface is observed from different angles on the surface of the anti-counterfeiting material on which the partial surface is presented. When you see the color patterns A and B separately.
  • the anti-counterfeit fiber of the present invention is provided with a concave-convex structure, and the concave-convex structure is disposed on a part of the surface of the anti-counterfeit fiber which can be present on one surface of the anti-counterfeit material, the observer can separately view the surface from different angles due to the obstruction of the concave-convex structure.
  • a portion of the unique portion has a visually different color pattern on the surface, which is used in the anti-counterfeiting material, so that the existing printing technology cannot imitate the visual difference caused by the three-dimensional structure.
  • the purpose of the invention is to enable the peculiar part of the anti-counterfeiting fiber to be naturally present on at least one surface of the anti-counterfeit material, substantially to control the observable surface of the anti-counterfeiting material to face the anti-counterfeit material, according to theoretical analysis and specific experiments, parallel to the anti-counterfeiting fiber
  • the surface of the anti-counterfeit fiber of the projection surface can be naturally presented on at least one surface of the anti-counterfeit material, and can be implemented in three ways: First, the anti-counterfeit crucible is covered with a flat transparent material, and the surface of the anti-counterfeit fiber is simultaneously The flat face of the transparent material is oriented such that the flat face of the flat fiber is naturally parallel to the observable surface of the security material such that the desired portion of the surface is present on the observable surface of the security material.
  • Another implementation manner is to make the security fiber have a curved or bent shape and have a certain toughness, and the partial surface is located on the curved or bent outer surface.
  • the anti-counterfeiting fiber can be present on the observable surface of the anti-counterfeiting material in a curved or bent state.
  • a third implementation manner is to make the cross section of the whole or part of the length of the anti-counterfeit fiber flat, and the part of the surface of the anti-counterfeit fiber is located on the flat surface of the flat section or the surface of the anti-counterfeit fiber facing the flat mask.
  • the flat surface of the anti-counterfeiting material can be naturally oriented toward the observable surface; for the case where the cross section of the fiber section is flat, the flat section can face the observable surface, and the flat surface The corresponding other parts with a common orientation naturally follow the observable surface.
  • Figure 1 is a schematic view of the structure of the present invention
  • FIG. 2a-2b are distribution diagrams of the color patterns A and B in the anti-counterfeit fiber along the longitudinal direction of the security fiber, FIG. 2a is a plan view, and FIG. 2b is a cross-sectional view;
  • FIG. 3 is a distribution diagram in which the color patterns of the security fibers are arranged in parallel but inclined with respect to the longitudinal direction of the security fiber;
  • FIG. 4 is a side view showing the distribution of the color patterns A and B along the longitudinal direction of the security fibers in the security fibers;
  • 5a-5g are diagrams in which the color patterns A and B are radially distributed, axially extended, but different in longitudinal direction on the security fibers;
  • FIG. 6a-6b are schematic views showing the cross section of the anti-counterfeit fiber in the anti-counterfeit material as a single triangle, wherein FIG. 6a is a cross-sectional view, and FIG. 6b is a plan view;
  • FIGS. 7a-7c are schematic views showing the cross section of the anti-counterfeit fiber in the anti-counterfeiting material and having a triangular shape, wherein FIG. 7a is a cross-sectional view, and FIGS. 7b and 7c are plan views;
  • FIG. 8a-8b are schematic views showing the cross section of the anti-counterfeit fiber in the anti-counterfeit material as a single quadrilateral, wherein FIG. 8a is a cross-sectional view and FIG. 8b is a plan view;
  • Figure 9a - Figure 9c are schematic views of the cross-section of the anti-counterfeit fiber in the anti-counterfeiting material in three cross-sections, wherein Figure 9a is a cross-sectional view, and Figures 9b, 9c are plan views;
  • FIGS. 10a-10d are schematic views showing the cross section of the security fiber in the anti-counterfeit material being trapezoidal, wherein Figs. 10a, 10b are cross-sectional views, and Figs. 10c, 10d are plan views;
  • FIGS. 11a-Lf are schematic views of the anti-counterfeit material covered with a transparent material in the anti-counterfeit material, wherein FIGS. 11a and 11b are respectively a single triangle and a single quadrilateral fiber respectively covered with a circular transparent material, and the graphs and lids are respectively cross-sectionally respectively.
  • the single triangular shape and the single quadrilateral fiber are covered with a flat transparent material, and the figures lle and llf are transparent materials in which the fiber cross sections are respectively a plurality of triangles and a plurality of quadrangles are covered with a flat shape.
  • Figure 12a - Figure 12e is a schematic cross-sectional view of a vacuum aluminum plating with a light-shielding effect between the color pattern A and the color pattern B of the security fiber
  • Figure 12a is a schematic view of the triangular aluminum-plated layer in the middle of the material
  • Figure 12b Is a schematic view of a triangular aluminum plated layer on the surface of the material
  • FIG. 12c is a schematic view of a quadrilateral aluminum plated layer in the middle of the material
  • FIG. 12d is a schematic view of a quadrilateral aluminum plated layer on the surface of the material
  • FIG. 12e is a horizontal view.
  • Figure 13 is a cross-sectional view of the cross section of the security fiber of the present invention.
  • Figures 14a, 14b, 14c are the smallest square areas when the security fibers are of different shapes
  • 15a, 15b are distribution diagrams of the anti-counterfeiting dimensions of the present invention in a warp-proof material
  • Figure 16 is a front elevational view showing a portion of the security fiber in a partially flat section.
  • FIG. 1 shows that an anti-counterfeit material 1 is distributed with an enlarged anti-counterfeit fiber 2, and a part of the surface 3 of the anti-counterfeit fiber 2 is present on the surface 1 of the anti-counterfeit material, and a part of the surface 3 has a concavo-convex structure, and the concavo-convex structure in the figure It is composed of a triangular element in the cross section 4 of the security fiber 2, the apex angle of the triangular element and the face of the oblique side constitute a convex occlusion structure, the face 3 of the two oblique sides, and the 3" component surface 3, On the face 3, there is a color pattern A, a face 3', and a color pattern B is distributed thereon.
  • the color patterns A and B can be respectively seen, for example When viewed from a, the color pattern A can be seen, and when viewed from the b direction, the color pattern B can be seen, and the color patterns A and B are different, and a significant visual difference can be produced.
  • the color patterns A and B can be individually or collectively filled.
  • the faces 3' and 3" on which they are located make the difference in consciousness more obvious.
  • the partial surface 3 When the partial surface 3 is viewed from different angles on the surface ⁇ of the security material 1, for a direction perpendicular to the security fiber 2, a part of the surface 3 is viewed from a to b, and at least one of the two color patterns A and B is located in the middle. In the middle angle c, both the color pattern A and the color pattern B can be seen. Since the security fiber 2 is usually very slender, it is generally seen from the c-direction that the color pattern A and B are combined. pattern.
  • the at least two color patterns A and B of the security layer distributed in the anti-counterfeiting material of the present invention include color patterns appearing under visible light, ultraviolet light, infrared light, and other non-visible light.
  • the anti-counterfeiting material of the present invention can be Achieve first-line anti-counterfeiting, that is, public security;
  • special tools can be used to judge, and second-line anti-counterfeiting can be realized.
  • the uneven security shielding layer 2 is disposed on the fine security fiber 2 distributed in the security material 1 of the present invention, and the concave and convex shielding structure is located on the partial surface 3 of the security fiber, and the partial surface 3 can be present on at least one surface of the security material, Therefore, the observer observes from different angles on the surface of the anti-counterfeit material, and because of the occlusion of the concave-convex structure, different color patterns of the partial surface can be respectively seen, and a significant visual difference is produced, which has an anti-counterfeiting effect.
  • the above-mentioned purpose is achieved because the occlusion effect of the fine-convex occlusion structure on the surface of the ⁇ -dimensional surface is blocked at different angles. It is decided that all current printing methods (whether lithographic, embossed, embossed, photocopying, jet printing, gravure, etc.) cannot duplicate this three-dimensional structure, so the invention can completely eliminate the counterfeiting of printing technology. .
  • the visual differences of the present invention are diverse:
  • the at least two color patterns A and B of the anti-counterfeit fibers distributed in the anti-counterfeiting material of the present invention are obscured by the concave-convex occlusion structure and are respectively seen to have various visual differences, and the visual difference is different from the color pattern.
  • the different distribution of the surface of the anti-counterfeiting fiber portion where the convex occlusion structure is located can be related to different visions.
  • Fig. 1 shows a distribution in which the distribution of the color patterns can be completely blocked by the concavo-convex shielding structure. Since the shielding structure extends along the length direction of the security preventing dimension 2, it is only perpendicular to the longitudinal direction of the anti-counterfeiting fiber 2. Different visions may change significantly due to occlusion. Since the security fiber 2 is already very thin, it is recommended that the maximum diameter of the cross section of the security fiber is preferably not more than 0.25 mm, so that the security fiber can be seen perpendicular to the length of the security fiber 2.
  • the width is limited, so when changing from the a-view to the b-view, the color patterns A and B must be different to produce a distinct visual difference, which can be observed by ordinary people's vision. That is to say, the color patterns A and B in this embodiment can make a sudden change in the normal vision of a person, and the difference is preferably only the difference in color, the difference in the pattern, the color is the same, and the color and the pattern are different. .
  • the surface 1 of the anti-counterfeit material 1 of the embodiment has at least two Observing the angles a and b, the color pattern A is seen when the surface of the security fiber is observed from the angle of a, and the color pattern B is blocked by the triangular convex occlusion structure on the surface 3 of the anti-counterfeit fiber 2, and the anti-counterfeiting is observed from the b angle.
  • the color pattern A and the color pattern B must be differently restricted.
  • the color pattern A and the color pattern B are exactly the same in the normal vision range of the person, but one of them performs some non-visible light processing, and can be recognized. Under the non-visible tool, you can see the visual difference between the two, resulting in anti-counterfeiting effects.
  • the convex occlusion structure of the present embodiment is disposed on the partial surface 3 of the security fiber 2 such that the color feature A and B positional relationship is a pattern in which no overlapping regions are completely separated, and a visual effect in which each other is completely blocked can be realized.
  • the apparent visual difference between the at least two color patterns A and B on the partial surface 3 may also be a different visual effect that a certain color pattern cannot be completely blocked and another color pattern can be completely blocked.
  • This visual effect is often due to The inclusion relationship of the color pattern, for example, the color pattern A is completely or partially included in the color pattern B, that is, when the surface 3 of the anti-counterfeit fiber portion is viewed from the angle of a, the concave-convex shielding structure of the surface 3 of the anti-counterfeit fiber portion can make the vision only When the color pattern A is seen, the color pattern B is completely blocked.
  • the uneven structure of the surface of the anti-counterfeit fiber portion 3 allows the vision to see the color pattern B and the color pattern A is completely or partially unblocked. .
  • the color patterns A and B that produce this visual difference must be different, at least the colors of the color patterns are different to produce a strong visual difference.
  • the color pattern A and the color pattern B are two partially overlapping area patterns, that is, when the surface of the anti-counterfeit fiber portion 3 is viewed from an angle, the anti-counterfeiting fiber portion
  • the concave-convex occlusion structure of the surface 3 causes the color pattern A seen by the person to block only a part of the color pattern B
  • the concave-convex occlusion structure of the surface 3 of the anti-counterfeit fiber portion when the surface 3 of the security fiber portion is viewed from the b-angle makes the color pattern B seen only Blocking the color pattern A-part, although B or A is not completely blocked, but because a considerable part of it has been blocked, the part that can be seen * because of the resolution of the human eye, may see a color pattern A includes a pattern of a partial color pattern B combination, instead of the simple color pattern A completely containing the color pattern B or the color pattern B completely containing the color pattern A.
  • the length of the security fiber is preferably not more than 15 mm, but A width of 0.2 mm can result in a much longer line of sight), so that when at least two color patterns A and B are distributed along different lengths of the security fiber (rather than along the axial direction as shown in Figure 1), a jump-like visual change can be produced.
  • This visual change will be explained in detail in the following embodiments. This visual change requires a relatively low color pattern, i.e., the color pattern can be identical, and a jump-like visual change can be produced as long as there is a significant visual difference in the position of the length of the security fiber.
  • the at least two color patterns A and B may be patterns of various single or multi-color lines or the like. Since the anti-counterfeit fiber in the anti-counterfeiting material of the invention is very slender, for the more practical one-line anti-counterfeiting, the simpler and more direct the identification, the higher the value, since the color feature is the most convenient feature for normal human vision, so the following two The case where the color patterns A and B are merely color colors is fully explained. Still referring to FIG.
  • the color pattern A and the color pattern B are color strips A and strips B having mutually different color characteristics, for example, the color strip A is red, the color strip B is blue, and the surface of the anti-counterfeit fiber is observed from an angle At 3 o'clock, only the red strip can be seen, and the blue strip is blocked by the concavo-convex structure on the surface 3 of the anti-counterfeit fiber portion.
  • the ordinary person's feeling fiber is red, and when the surface of the anti-counterfeit fiber portion 3 is viewed from the b angle, only The red strip can be seen and the blue strip is blocked by the concavo-convex structure on the surface 3 of the anti-counterfeit fiber.
  • the ordinary person's sensor fiber is red, and the surface of the anti-counterfeit fiber portion 3 can be seen from the c angle. Strips and blue strips, because the strips are extremely thin and very close together, the common person feels the composite color effect of the red strip and the blue strip, that is, the fiber is black.
  • the color bars A and the color bars B having mutually different color characteristics are parallel to the longitudinal direction of the security fiber, and when the angle is changed, the entire fiber changes from red to blue, and has a unique visual conversion effect.
  • the angle of transformation from angle a to angle b is preferably no more than 120 degrees.
  • the visual feature of this design is that the fiber color change is most pronounced when the fiber surface is viewed at an angle that is perpendicular to the length of the fiber.
  • the color pattern A and the color pattern B in FIG. 2a and FIG. 2b are respectively a combination effect of A1, A2, and A3 colors having different color characteristics parallel to each other and a combination effect of Bl, B2, and B3 colors, and colors A1 - A3 and color B1 - B3 is each strip-shaped and perpendicular to the longitudinal direction of the security fiber.
  • the visual feature of this design is that the fiber color change is most pronounced when the fiber surface is viewed at an angle that changes along the length of the fiber.
  • the color pattern A and the color pattern B are respectively a combination of Al, A2, and A3 colors having mutually different color characteristics and a combination of Bl, B2, and B3 colors, and the colors A1 to A3 and the colors B1 to B3 are each strips.
  • the angle of intersection with the longitudinal direction of the anti-counterfeit fiber is between 0 and 90 degrees.
  • the visual characteristic of the design is that the fiber color change is most obvious when the fiber surface is observed by tilting the angle corresponding to the longitudinal direction of the fiber.
  • the color pattern B is the same pattern and the same color characteristics, but the positions of the color pattern A and the color pattern B in the length direction of the security thread are different, see FIG. 4, for example, the color pattern A and the color pattern B. Both are black, the color pattern A is distributed in the front half of the fiber, and is composed of Al, A2, and A3 colors. The color pattern B is distributed in the latter half of the fiber, and is composed of Bl, B2, and B3 colors. When changing the angle, the entire fiber is It moves in a beating position and has a unique visual transformation effect.
  • FIG. 5a-g are the case where the color pattern A and the color pattern B are radially distributed, axially extended, but different in the longitudinal direction on the security fiber, and the color pattern A and the color pattern B may be completely positioned in the longitudinal direction on the security fiber. Overlapping, or partially overlapping, or partially connected, or separated.
  • Figure 5a The strip color pattern A is red, the strip color pattern B is black, and when the axial positions of the color pattern A and the color pattern B are completely overlapped, when the angle is changed, the entire fiber changes from red to black, visually fibrous.
  • Fig. 5e is a case where the color pattern A or the color pattern B has different combinations of colors, and the color thereof may be a single color or a multi-color composite.
  • the strip color pattern A is composed of two lines of different colors that are connected end to end, one is red Al, one is green A2, and the color pattern B is just one black, when changing angles, visual The whole fiber is changed from red and green bicolor fiber to black monochromatic fiber, and the visual effect is unique.
  • the color pattern can be white, or colorless or the same color as the surface of the security material.
  • the strip color pattern A is red
  • the strip color pattern B is white
  • the color pattern B is distributed over the entire convex surface 3" of the security fiber.
  • the surface of the anti-counterfeit material is white
  • the strip color pattern A is black
  • the strip color pattern B is yellow
  • the color pattern B is distributed on all convex surfaces 3" of the security fiber, if the surface of the anti-counterfeit material It is also yellow.
  • the whole fiber disappears from black to fiber, which has a unique visual transformation effect.
  • the fiber cross-section may be designed to include some or all of the color pattern B from the visual color pattern A, but the color pattern B cannot contain the color pattern A, as shown in FIG. 5g. ;
  • the embossing structure of the present invention has a variety of:
  • the embossing structure has a cross section of the security fiber having at least one triangular element, and the triangular element means a cross-sectional structure having at least one apex angle and two corresponding adjacent sides thereof.
  • the typical structure is a triangular cross section, and may also be a quadrangular cross section or a polygonal cross section.
  • the section 4 of Fig. 1 is a triangle, the color pattern A is on the face 3 where one oblique side of the triangle is located, and the color pattern B is on the face 3" of the other oblique side of the triangle.
  • the triangle is realized to present a color pattern to block Another color map, the typical embossing structure of the case, and it is easy to satisfy the requirement that the angle of change from the angle a to the angle b is preferably not more than 120 degrees.
  • the bump occlusion structure is a combination of a plurality of triangles in parallel, and a combination of all the color patterns on the corresponding oblique sides of each triangle constitutes a color pattern A, and a combination of all the color patterns on the other corresponding oblique sides of each triangle constitutes a color pattern B. Since the fibers are very thin, the concave-convex occlusion structure formed by a single triangle is difficult to be presented on the surface of the anti-counterfeit material with the vertex angle facing up, and the triangular shape is made flat, and the sensitivity of the color pattern change is not high when the flat triangle changes the viewing angle. And when the fiber width is constant, the color pattern A or the color pattern 8 will be thinner, which will affect the visual effect. Therefore, the triangular parallel combination designed by the present invention can make up for the above deficiencies.
  • FIG 6 a- 6 b is 1 counterfeit security fibers in the material 2 is a schematic cross section of a single triangle, which is a sectional view of FIG. 6a, 6b is a plan view of FIG.
  • the two sides of the triangle have the color patterns A and B respectively. Since the anti-counterfeiting material has a certain transparency, the color pattern A and the color pattern B are displayed on the surface of the anti-counterfeit material, which can be seen by the naked eye, when viewed from the angle of a In the color pattern A, the color pattern B is blocked by the triangular convex structure, and likewise, when the color pattern B is seen from the b angle, the color pattern A is blocked by the triangular convex structure and is invisible.
  • the security fiber 2 in the anti-counterfeiting material 1 is bent along the equiangular axis 5 between the two sides, so that it can be ensured that either the A side and the B side are simultaneously present on the surface of the anti-counterfeiting material, or the third side 6 is located.
  • the surface is presented separately on the surface of the security material.
  • the bending along the averaging axis 5 is the key to accurately control the faces of the fibers A and B at the same time, and the averaging axis 5 is actually a virtual control axis, which functions in the subsequent views and the series of Fig. 6
  • the same purpose is to allow the color pattern A and the color pattern B to be simultaneously presented on the surface of the anti-counterfeit material 1.
  • the color of the face of the third side 6 of the cross section is white or the same as the color of the surface of the anti-counterfeit material 1.
  • the choice of this triangular structure is mainly for the following three reasons:
  • the triangular structure has the same fiber height and can be seen in a larger color area, when paper or plastic film When the thickness is thin, the height of the fiber cannot be allowed to be larger than the thickness of the paper or the plastic film.
  • the thickness of the currency paper is not more than 90 ⁇ m, and the thickness of the copy paper is not more than 80 ⁇ m, so that it is added to the paper of such thickness.
  • Triangle The shape structure is a good choice; 2, the relative cross section is quadrilateral, the triangle cross section itself has better stability, can better ensure that the color patterns A and B can be balancedly presented under a certain forming pressure in the papermaking process.
  • a feature of the triangular structure is that the color pattern of the corresponding surface of the side 6 has the same possibility to be separately presented on the surface of the anti-counterfeiting material. Since the surface is a plane without a concave occlusion structure, the angle cannot be changed. To create a visual difference, therefore, in order to avoid this situation, we make the surface color pattern into white or the same color as the surface material of the anti-counterfeit material, so that when the color pattern is presented on the surface of the anti-counterfeit material, The fiber color is white or the same color as the surface of the anti-counterfeit material, which is invisible to the naked eye, which subtly solves this problem.
  • FIGS. 7a-7c are schematic views of the cross-section of the anti-counterfeit fibers in the anti-counterfeiting material and having a triangular shape, wherein Figure 7a is a cross-sectional view, and Figures 7b, 7c are plan views. Since the anti-counterfeiting material has a certain transparency, the color pattern A and the color pattern B of the triangle are visible on the surface of the anti-counterfeit material, and the color pattern A is seen when viewed from the angle a (the synthetic effect of A1+A2) And the color pattern B is blocked by the triangle and cannot be seen.
  • the color pattern B (which is a synthetic visual effect of B1+B2) is seen and the color pattern A is blocked by the triangle and is invisible.
  • the fibers in the anti-counterfeiting material may be curved along the equal axis 5 (see Fig. 3b) or linear (see Fig. 3c), so that the surface of the color pattern A and the color pattern B can be ensured.
  • the surface on which the surface is located is simultaneously presented on the surface of the anti-counterfeiting material 1, or the corresponding surface of the side 6 is separately presented on the surface 1 of the anti-counterfeiting material.
  • the color of the side 6 is designed to be white or the same as the color of the surface of the anti-pseudo-material 1.
  • the practical effect of the structure is: 1. Relative to a single triangle, the same fiber height has a larger visual area, which is also possible when applied on very thin paper, for example, when the thickness of the paper layer is below 50 micro-cubes. 2. Since the fiber is flat as a whole, when the fiber is short and has a certain hardness, the fiber is, so that the need to bend does not ensure that the surface of the color pattern A, B is simultaneously present on the surface of the anti-counterfeiting material 1. , or the side of the side 6 is presented on the surface of the anti-counterfeiting material 1.
  • Figures 8a-8b are schematic views of the cross-section of the security fiber 2 in the security material 1 as a single quadrilateral, wherein Figure 8a is a cross-sectional view and Figure 8b is a plan view.
  • the security fiber 2 is bent along the averaging axis 5, which is half the visual area of the same fiber height in the anti-counterfeit material 1 with respect to a single triangle in the series of Fig. 6, but the advantage is that no matter which side (color pattern A, B) The face is still on the side of the color pattern A' B'.
  • the upward facing fiber can change the viewing angle to produce a color change effect. This is also an option when the thickness of the paper or film is large.
  • FIGS. 9a-c are schematic views of the anti-counterfeit material 2 in the anti-counterfeit material 1 having three cross-sections in a quadrangular shape, wherein FIG. 9a is a cross-sectional view, and FIGS. 9b and 9c are plan views; the same is true with respect to a single quadrilateral in the series of FIG.
  • the fiber height has a larger visual area, and since the fiber is flat as a whole, when the fiber is short and has a certain hardness, the fiber ensures color pattern A (consisting of Al, A2, A3) even if it does not need to be bent.
  • B Consisting of Bl, B2, B3 is simultaneously presented on the surface of the anti-counterfeiting material.
  • FIGS. 10a-10d are schematic views showing the cross section of the security fiber in the anti-counterfeit material being trapezoidal, wherein Figs. 10a, 10b are cross-sectional views, and Figs. 10c, 10d are plan views.
  • the trapezoid has good stability, even if the color pattern A, B is very inclined (the higher the sensitivity of the tilt angle change), it can be very stable, especially when the fiber is short and has a certain hardness, even if the fiber is not
  • the need to bend also ensures that the faces of the color patterns A and B are simultaneously displayed on the surface of the anti-counterfeit village material (see Fig. 10c);
  • Fig. 10a is a trapezoidal shape, which is a combination of two trapezoids in Fig.
  • Fig. 11a - l lf series is a schematic view of the anti-counterfeit fiber 2 in the anti-counterfeiting material 1 covered with the transparent material 7. Due to the transparency of the transparent material ⁇ , part of the surface 3 of the anti-counterfeit fiber of the present invention having the embossed structure is naturally present in the ' On the surface of the anti-counterfeit material.
  • Figures 11a and 11b are respectively a single triangular shape and a single quadrilateral fiber respectively covered with a circular transparent material 7 for the purpose of increasing the compressive strength of the fiber, further ensuring the shape of the fiber cross section during the papermaking process or during the process of adding the plastic.
  • Figure l lc, lid is a transparent material 7 with a single triangle and a single quadrilateral fiber covered with a flat shape, the purpose is not only to increase its compressive strength, but also to ensure the stability of the fiber cross-sectional shape, and even the fiber Non-bending will also ensure that the AB surface appears on the surface of the anti-counterfeit material at the same time;
  • Figure l le, l lf is a transparent material 7 with a plurality of triangles and a plurality of quadrilaterals covered with a flat cross section, in order to increase the compressive strength of the fiber. Strength, further ensuring the stability of the fiber cross-sectional shape during the papermaking process or during the addition of plastic.
  • Figure 12a-12e is a cross-sectional view of a vacuum-aluminized aluminum plate with a light-shielding effect between the color pattern A and the color pattern b of the security fiber 2.
  • the fiber is made of organic material, there is a cross color between the color patterns A and B, and as a result, the vividness of the color patterns A and B is seriously affected. Thus, the difference in the perception between the color patterns A and B is not significant.
  • Figure 12a is a schematic view of a fiber having a triangular cross section and an aluminized layer 8 in the middle of the material, which corresponds to a combination of fibers of two different colors, with an aluminum layer plated at the combined interface;
  • Figure 12b is a triangle cross section of the fiber
  • FIG. 12c is a schematic view of a cross-section of a plated aluminum layer in the middle of the fiber, aluminized Layer 8 is at the interface of two different color fibers;
  • Figure 12d is a schematic view of the surface of the quadrilateral aluminum-plated layer on the fiber surface, the aluminized layer 8 on the surface of the shaft 5 side, after the aluminum plating, the fiber surface can also be Attaching a layer of color, it can also be a layer of aluminum plating;
  • Figure 8e is a schematic view of a plurality of cross-sections of the fiber and a triangular shape, the aluminized layer 8 on the triangular surface B1B2B3 of the same security of the anti-counterfeit fiber; The surface of the root security fiber is aluminized, and then the color pattern is printed on the corresponding side: 6.
  • the sides of the relief structure may be curved, as shown in Fig. 13, and may also be serrated or other irregular curved edges.
  • the anti-counterfeiting material is an organic film.
  • the use of anti-counterfeiting fibers for adding anti-counterfeiting to plastic film was a blank because the plastic film was difficult to tear and was easily integrated with the anti-counterfeit fiber. Therefore, the anti-counterfeit fiber in the plastic film could not be torn open or used with a needle. Picking out the observations, when counterfeiters have printed thin lines to imitate their visual characteristics, they simply can't find any simple way to distinguish them. However, since it is not required to be peeled off in the present invention, it can be used in the field of plastic films.
  • the anti-counterfeiting fiber is a fluorescent fiber, and when the fluorescent lamp is irradiated, the visual angle can be seen by changing the viewing angle to the naked eye.
  • the anti-counterfeiting fiber is an infrared ray-emitting ray, and when the infrared ray is irradiated, the visual angle can be seen by the naked eye by changing the viewing angle.
  • a method of controlling the surface of the anti-counterfeiting fiber portion 3 on the surface of the anti-counterfeit material is a method of controlling the surface of the anti-counterfeiting fiber portion 3 on the surface of the anti-counterfeit material:
  • the surface of the anti-counterfeiting material is essential. According to theoretical analysis and a large number of experiments, in the papermaking process, when the fiber has a certain elastic hardness, the maximum projection surface of the entire fiber shape must face upward and appear on the surface of the paper.
  • the projected area of the security fiber of the present invention refers to The minimum square area corresponding to the projection line of the body, that is: when the security fiber is straight and the cross section of the fiber is in the length direction, the smallest square area is the area of the solid projection line of the security fiber, as shown by the oblique line in Fig.
  • the minimum square area is the product of the widest part of the solid projected area of the security fiber and the fiber length, as shown by the oblique line in Figure 14b. Area; When the security fiber is a curved line, the minimum square area is a square area composed of a solid curved projection line that just covers the security fiber, as shown in the area covered by the oblique line in Fig. 14c.
  • the present invention has been specifically designed to apply anti-counterfeiting fibers in an interlayer having a layer of paper, or in an interlayer having a plastic film, or distributed in a single layer of plastic.
  • the film In the film:
  • the security fiber 2 is a curved shape, and the upper surface of the curved fiber is the surface 3 of the security fiber portion, see Figs. 15a, 15b.
  • the cross-section of the longitudinal direction of the security fiber is less than or equal to the maximum width c of the cross-section perpendicular to the surface of the anti-counterfeit material, that is, the long axis d of the cross-section of the length of the anti-counterfeit fiber 2 and the surface of the anti-counterfeit material.
  • Vertical see Fig. 15b, so that when the fiber is curved, its cross section may not be flat or still allow a portion of the surface 3 of the desired security fiber to be present on the surface of the paper.
  • the transverse maximum length of the curved security fiber 2 due to the bending is its geometric width e, see Fig. 15a, when the geometric width e is at least twice the length of the long axis d of the cross section of the fiber length direction, the curved anti-counterfeit fiber 2 can be presented on the surface of the anti-counterfeiting material according to its natural curvature.
  • the flat corresponding flat surface is present on the surface of the security material, see Fig. 16. It is also possible that the cross-section of the security fiber 2 in the longitudinal direction of the fiber is all flat, and the flat flat surface corresponds to the surface of the anti-counterfeit material.
  • the flat portion of the security fiber 2 is preferably colorless, or white, or the same color as the surface of the security material 1.
  • the material of the security fiber of the present invention may be an organic material or a metal material.
  • the anti-counterfeiting material of the present invention refers to paper or paperboard or an organic film.
  • the security fiber 2 may be sandwiched between two layers of pulp, or sandwiched between two layers of organic film; or sandwiched between layers of pulp and other materials; or sandwiched between layers of organic film and other layers of material Or adhere to the surface of the anti-counterfeiting material, or otherwise embed the surface of the anti-counterfeiting material.
  • the various relief structures of the security fibers of the present invention can be formed by a mold.
  • the color pattern on the concave-convex structure can be formed on the anti-counterfeit fiber by means of filming, fine printing, hot pressing, etc.; the color pattern formed by the simple color can be produced by spraying different colors through a nozzle and then synthesizing, or by using different color fibers. Compressed by heat.
  • the method of embedding the anti-counterfeit fiber into the paper can be directly added to the pulp in the papermaking process or by laminating the multi-ply paper.

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  • Laminated Bodies (AREA)
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  • Credit Cards Or The Like (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Description

分布具有视觉特征的防伪纤维的防伪材料
技术领域
本发明涉及一种诸如防伪紙或防伪薄膜或防伪包装之类的防伪材料， 特别是一种分 布有防伪纤维且印刷无法模仿其视觉特征的防伪材料。 背景技术
有色纤维加入纸张制造成防伪纸已有近百年的历史， 至今在许多国家的纸币中仍在 使用， 一些有价证券、 税务发票、 产品说明书、 印刷标签也有应用； 特别是荧光纤维， 更是在几乎所有的纸币中都有使用。 归纳起来防伪纤维有单根单色纤维、 单根多色纤维。 中国专利 02168121.0 "—种防伪纤维" 中所述的是一种单根多色段纤维， 即一根纤维的 沿长度方向上至少有二种颜色。 还有中国专利 02170092.4 "—种防伪纤维及采用该纤维 的防伪纸" 中所述的是一种正反面异色的纤维， 即纤维的横截面是椭圆形， 椭圆形对应 有纤维的上下二个表面， 二个表面上的颜色有明显的不同， 当该种纤维加入纸浆中制成 防伪纸时， 由于纸纤维的相互作用， 椭圆形上下二个表面会平行于纸面， 当纸较薄或较 透明时， 观察同一根纤维， 在纸的一面是一种颜色， 纸的另一面是另一种颜色。 但上述 有色纤维的缺陷是现有的印刷细线均可模仿其视觉效果， 为了准确区分是到底是纤维还 是印刷细线， 只有撕开纸或用针挑出纤维观察。 这不但不方便， 而且诸如纸币、 有价证 券等商品是不能破坏的， 所以其防伪效果就受到很大的限制 , 造假者往往用印刷细线来 仿造时几乎都可以蒙混过关。
中国专利 02146589.4"—种防伪材料及采用该防伪材料的防伪文件"， 其中涉及一种 防伪纤维为具有轴向长度和横截面圆形或近似圆形的细丝， 其特征在于所迷细丝横截面 含有两种或两种以上的颜色， 所述每种颜色所在的轴向颜色段沿轴向呈螺旋状延伸。 在 任何改变角度观察， 普通人凭肉眼均无法感觉到纤维色彩图案的改变， 故其仍然是一个 等同于平面图案的视觉特征， 在肉眼直接可分辨的精度内， 较精细的印刷方式仍能模仿。 发明内容
本发明的目的是提供一种防伪材料， 该防伪材料中分布有防伪纤维， 通过改变对纤 维观察角度， 能观察到纤维的不同色彩图案， 使现有印刷技术无法模仿其枧觉特征。
本发明的另一个目的是提供一种防伪纤维， 当其特有部分表面呈现在防伪材料的至 少一个面上时， 能使观察者在该面从不同角度能分别独自看到该特有部分上不同的色彩 图案， 从而用于防伪材料中， 使现有印刷技术无法模仿。
本发明还能提供多种防伪纤维， 这些防伪纤维的特有部分表面在防伪材料的制造过 程中能自然呈现在防伪材料的至少一个面上， 该特有部分使观察者在该面从不同角度能 分别独自看到该特有部分上不同的色彩图案， 从而用于防伪材料中， 使现有印刷技术无 法模仿。
本发明的第一个目的是这样来实现的： 一种防伪材料， 其上分布有防伪纤维， 所述 防伪纤维的部分表面呈现在所述防伪材料表面上， 其特征在于所述部分表面具有凹凸遮 挡结构， 其上分布有至少二个色彩图案人和^ 所述至少二个色彩图案 A和 B在所述部 分表面上有明显的视觉差异， 使在呈现所述部分表面的防伪材料表面上从不同角度观察 所述部分表面时， 能分别看到色彩图案 A和^
本发明防伪材料中分布的防伪紆维的至少两个色彩图案 A和 B包括在诸如可见光、 紫外线、 红外线以及其他非可见光下显现的色彩图案， 对于可见光下显现的色彩图案， 本发明防伪材料可实现一线防伪， 即大众防伪； 对于紫外线、 红外线以及其他非可见光 下显现的色彩图案， 则可用专用工具进行判断， 可实现二线防伪。 由于本发明是在防伪 材料中分布的很细的防伪纤维（通常纤维直径不超过 100微米）上设置凹凸遮挡结构， 且凹凸遮挡结构位于防伪纤维的所述部分表面上， 而该部分表面可呈现在防伪材料至少 一个表面上， 所述至少二个色彩图案 A和 B在所述部分表面上有明显的视觉差异， 因此 观察者从防伪材料的该表面上的不同角度观察， 由于凹凸结构的遮挡， 可分别看到部分 表面的色彩图案， 具有防伪效果。 由于这种视觉差异是由防伪材料中防伪纤维部分表面 上分布的图案特征被凹凸结构遮挡造成的， 而印刷技术无论如何精确也无法仿冒出这种 立体结构， 因此本发明能有效杜绝印刷技术的仿冒。
本发明防伪材料中分布的防伪纤维的至少两个色彩图案 A和 B被凹凸遮挡结构遮挡 而被分别看到产生的视觉差异是多种多样的， 可以是： 呈现所述部分表面的防伪材料表 面上存在至少二个观察角度 a和 b,从 a角度观察防伪纤维所述部分表面时看到色彩图案 A而色彩图案 B被防伪纤维所述部分表面上的凹凸遮挡结构挡住看不见， 从 b角度观察 防伪纤维所述部分表面时看到色彩图案 B而色彩图案 A被防伪纤维所述部分表面上的凹 凸遮挡结构挡住看不见； 也可以是某一色彩图案不能被完全挡住而另一图案特征能被完 全挡住产生不同的视觉效果； 还可以是因被遮挡在沿纤维长度方向跳跃性的视觉变换。 在实施例中将针对附图对各种差异进行详细说明。
本发明的另一个目的是这样实现的： 一种嵌入上述防伪材料中的防伪纤维， 具有能 够呈现在所述防伪材料的一个表面的部分表面， 其特征是： 所述部分表面具有凹凸遮挡 结构， 其上分布有至少二个色彩图案 A和 B, 色彩图案 A和 B在所述部分表面上有明显 的视觉差异，使在呈现所述部分表面的防伪材料表面上从不同角度观察所述部分表面时， 能分别看到色彩图案 A和 B。 由于本发明防伪纤维上设置有凹凸结构， 且凹凸结构设置 在可呈现在防伪材料一个面上的防伪纤维的部分表面上， 由于凹凸结构的遮挡， 观察者 在该面从不同角度能分别独自看到该特有部分一一部分表面上有视觉差异的色彩图案， 从而用于防伪材料中， 使现有印刷技术无法模仿其立体结构带来的视觉差异。
本发明的能使防伪纤维特有部分自然呈现在防伪材料的至少一个面上的目的实质上 是控制防伪纤维某一面一定朝向防伪材料的可观察面， 根据理论分析及具体实验， 平行 于防伪纤维最大投影面的防伪纤维表面能够自然呈现在防伪材料的至少一个面上， 其实 现方式可以为三种： 一是使防伪歼维外覆盖一层扁平形的透明材料， 同时防伪纤维的所 述部分表面朝向透明材料的扁平面， 这样， 扁形纤维的扁平面可自然与防伪材料的可观 察面平行， 使需要的部分表面呈现在防伪材料的可观察面上。 另一种实现方式是使防伪 纤维成为弯曲或弯折形， 并具有一定的韧性， 且所述部分表面位于该弯曲或弯折外表面， 这样当加入防伪材料时， 防伪纤维能以自身弯曲或弯折态呈现在防伪材料可观察表面上。 第三种实现方式是使防伪纤维的整段或部分长度上的横截面为扁平形， 防伪纤维的所述 部分表面位于该扁平形截面所在扁平面或与该扁平面具共同朝向的防伪纤维的表面 , 对 于整段纤维的横截面是扇平的情况， 自然加入防伪材料中扁平面能朝向可观察面； 对于 纤维部分段的横截面是扁平的情况， 扁平段能朝向可观察面， 与扁平面相对应的具共同 朝向的其他部分自然也跟着朝向可观察面。 附图说明
图 1是本发明的结构示意图；
图 2a—图 2b是防伪纤维中色彩图案 A和 B沿防伪纤维长度方向平行排布分布图， 图 2a是平面图， 图 2b是截面图；
图 3是防伪纤维中色彩图案平行排布但与防伪纤维长度方向倾斜的分布图； 图 4是防伪纤维中色彩图案 A和 B沿防伪纤维长度方向分布的侧视图；
图 5a— 5g是色彩图案 A和 B在防伪纤维上径向分布、 轴向延伸、 但长度方向位置 不同的情形图；
图 6a—图 6b是防伪材料中防伪纤维横截面为单个三角形的示意图， 其中图 6a是截 面图， 图 6b是平面图；
图 7a—图 7c是防伪材料中防伪纤维横截面为二个并结三角形的示意图， 其中图 7a 是截面图， 图 7b、 7c是平面图；
图 8a—图 8b是防伪材料中防伪纤维横截面为单个四边形的示意图， 其中图 8a是截 面图， 图 8b是平面图；
图 9a—图 9c是防伪材料中防伪纤维横截面为三个并结四边形的示意图， 其中图 9a 是截面图， 图 9b、 9c是平面图；
图 10a—图 10d是防伪材料中防伪纤维横截面为梯形的示意图， 其中图 10a、 10b是 截面图， 图 10c、 10d是平面图；
图 11a—图 llf是防伪材料中防伪纤维覆盖有透明材料的示意图， 其中图 lla、 lib 是横截面分别为单个三角形和单个四边形纤维分別覆盖有圆形透明材料， 图 llc、 lid是 横截面分别为单个三角形和单个四边形纤维覆盖有扁平形的透明材料， 图 lle、 llf是纤 维横截面分别为多个三角形和多个四边形覆盖有扁平形的透明材料。
图 12a—图 12e是防伪纤维的色彩图案 A和色彩图案 B之间有一层起遮光作用的真 空镀铝的横截面示意图， 图 12a是横截面为三角形镀铝层在材料中间的示意图， 图 12b 是横截面为三角形镀铝层在材料表面的示意图， 图 12c是横截面为四边形镀铝层在材料 中间的示意图， 图 12d是横截面为四边形镀铝层在材料表面的示意图， 图 12e是横截面 多个并结三角形镀铝层在材料相同视觉表面的示意图；
图 13是本发明防伪纤维的横截面的边为曲线截面图；
图 14a、 14b、 14c是防伪纤维为不同形状时的最小方形面积；
图 15a、 15b是本发明防伪紆维为弯曲状在防伪材料中的分布图；
图 16是防伪纤维部分截面是扁平状的正面视图。 替换页（细则第26条） 具体实施方式
图 1中显示了防伪材料 1中分布有一根放大的防伪纤维 2,防伪纤维 2的部分表面 3 呈现在防伪材料的表面 1，上， 部分表面 3具有凹凸遮挡结构， 本图中的凹凸遮挡结构是 由防伪纤维 2的横截面 4中含有三角形元素构成， 三角形元素的顶角及其斜边所在面构 成了凸形遮挡结构， 两斜边所在的面 3，和 3"組成部分表面 3 , 在面 3，上分布有色彩图案 A, 面 3 '，上分布有色彩图案 B， 当从防伪材料 1的表面 Γ上从不同角度观察部分表面 3 时， 能分别看到色彩图案 A和 B, 比如从 a向观察， 能看到色彩图案 A, 从 b向观察， 能看到色彩图案 B, 色彩图案 A和 B不同， 则能产生明显的视觉差异。 色彩图案 A和 B 可以各自或共同布满其所在的面 3 '和 3 " , 使枧觉差异更明显。 从防伪材料 1 的表面 Γ 上不同角度观察部分表面 3时， 对于垂直于防伪纤維 2的方向中， 从 a向到 b向看部分 表面 3 ,中间还有至少一个位于两种色彩图案 A和 B中间的视角 c ,既能看到色彩图案 A, 也能看到色彩图案 B, 由于防伪纤维 2通常非常纤细， 因此， 从 c向看通常看到的是色 彩图案 A和 B组合成的一种图案。
本发明防伪材料中分布的防伪圩维的至少两个色彩图案 A和 B包括在诸如可见光、 紫外线、 红外线以及其他非可见光下显现的色彩图案， 对于可见光下显现的色彩图案， 本发明防伪材料可实现一线防伪， 即大众防伪； 对于紫外线、 红外线以及其他非可见光 下显现的色彩图案， 则可用专用工具进行判断， 可实现二线防伪。 由于在本发明防伪材 料 1 中分布的很细的防伪纤维 2上设置凹凸遮挡结构， 且凹凸遮挡结构位于防伪纤维的 部分表面 3上， 而该部分表面 3可呈现在防伪材料至少一个表面上， 因此观察者从防伪 材料的该表面上的不同角度观察， 由于凹凸结构的遮挡， 可分别看到部分表面的不同色 彩图案， 并产生明显的视觉差异， 具有防伪效果。 由于这种视觉差异是由防伪材料中防 伪纤维部分表面上分布的色彩特征被凹凸结构遮挡造成的， 也即实现上述目的是由于圩 维表面精细的凹凸遮挡结构的在不同角度对光线的遮挡效果决定的， 而目前所有的印刷 方法（无论是平印、 孔印、 凸印、 复印、 喷印、 凹印等等）均无法复制出这种立体结构， 因此本发明能彻底杜绝印刷技术的仿冒。
本发明视觉差异存在多样性：
本发明防伪材料中分布的防伪纤维的至少两个色彩图案 A和 B被凹凸遮挡结构遮挡 而被分别看到产生的视觉差异是多种多样的， 这种视觉差异是与色彩图案在不同的 KJ凸 遮挡结构所在的防伪纤维部分表面的不同分布而能够带来的不同视觉有关。
图 1所示的实施例显示的是一种色彩图案的分布能完全被凹凸遮挡结构彼此遮挡的 分布， 由于遮挡结构是沿防伪圩维 2长度方向延伸， 因此只有垂直于防伪纤维 2长度方 向的不同视觉才可能因遮挡而有显著变化， 由于防伪纤维 2 已经非常纤细， 建议防伪纤 维横截面的最大直径最好是不超过 0.25mm, 因此垂直于防伪纤维 2长度方向的能看到的 防伪纤维宽度是 限的， 故从 a视角向 b视角转换时， 必须是色彩图案 A和 B不同才 能产生明显的视觉差异， 才能被普通人的视力观察到。 也就是本实施例色彩图案 A和 B 不同能使人的正常视力观察到突变， 这种不同最好仅是色彩的不同， 也可以是图案的不 同而色彩相同， 还可以是色彩和图案均不同。 本实施例防伪材料 1表面 1，上存在至少二 个观察角度 a和 b，从 a角度观察防伪纤维所述部分表面时看到色彩图案 A而色彩图案 B 被防伪纤维 2部分表面 3上的三角凸形遮挡结构挡住看不见， 从 b角度观察防伪纤维 2 部分表面 3时看到色彩图案 B而色彩图案 A被防伪纤维 2部分表面 3的三角凸形遮挡结 构挡住看不见； 对于荧光纤维、 红外纤维等二线防伪， 即借助工具来观察， 本实施例则 可以不受色彩图案 A和色彩图案 B必须不同的限制， 比如色彩图案 A和色彩图案 B在 人的正常视力范围是完全相同， 但是其中一个进行了某种非可见光处理， 则在能识别该 非可见光的工具下， 就能看到两者的视觉差异， 产生防伪效杲。 本实施例的凸形遮挡结 构在防伪纤维 2上部分表面 3的设置使色彩特征 A和 B位置关系是一种没有重叠区域完 全分离的图案， 能实现彼此被完全挡住的视觉效果。
至少二个色彩图案 A和 B在部分表面 3上明显的视觉差异也可以是某一色彩图案不 能被完全挡住而另一色彩图案能被完全挡住产生的不同视觉效果， 这种视觉效果往往是 由于色彩图案的包含关系带来的， 比如色彩图案 A完全或部分包括在色彩图案 B之中， 即在从 a角度观察防伪纤维部分表面 3时， 防伪纤维部分表面 3的凹凸遮挡结构使视力 只能看到色彩图案 A而完全挡住了色彩图案 B, 从 b角度观察防伪纤维部分表面 3时防 伪纤维部分表面 3的凹凸遮挡结构使视力能看到色彩图案 B而色彩图案 A完全或部分未 被挡住。产生这种视觉差异的色彩图案 A和 B必须不相同，至少色彩图案的色彩不相同， 以产生强烈的视觉差异。
也可以是均不能完全挡住时产生的视觉效果，这种情况可以是色彩图案 A与色彩图 案 B是二个有部分重叠区域图案， 即在从 a角度观察防伪纤维部分表面 3时， 防伪纤维 部分表面 3的凹凸遮挡结构使人看到的色彩图案 A只挡住了色彩图案 B的一部分， 从 b 角度观察防伪纤维部分表面 3时防伪纤维部分表面 3的凹凸遮挡结构使看到的色彩图案 B只挡住了色彩图案 A—部分， 此时虽然 B或 A都没有被完全挡住， 但由于其相当一部 分已被挡住， 其能 * 看到的部分由于人眼的分辨力， 看到的可能是色彩图案 A中包含 有部分色彩图案 B组合的一种图案，而不是单纯的色彩图案 A完全包含色彩图案 B或色 彩图案 B完全包含色彩图案 A。产生这种明显的视觉差异的色彩图案 A和 B也必须是不 相同， 至少色彩特征不相同。
还可以是因被遮挡在沿纤维长度方向跳跃性的视觉变换带来的视觉差异， 由于在防 伪纤维长度方向人的视线可以较长， （防伪纤维的长度最好是不超过 15mm, 但比其宽度 0.2mm能带来长得多的视线）， 因此当至少两个色彩图案 A和 B沿防伪纤维长度不同位 置 （而不是如图 1 沿轴向分布）分布时， 可以产生跳跃式的视觉变化， 这种视觉变化在 下面的实施例中将详细说明。 这种视觉变化对色彩图案的要求相对较低， 即色彩图案可 以是完全相同， 只要在防伪纤维长度方向所处的位置有明显视觉差异， 就可产生跳跃式 的视觉变化。
本发明色彩图案的多样性及其带来的视觉效果：
至少两个色彩图案 A和 B可以是各种单色或多色彩线等組成的图案。由于本发明防 伪材料中的防伪纤维非常纤细， 对于实用性更高的一线防伪来说， 识别越简单直接， 则 价值越高， 由于颜色特征是正常人视力最便于分辨的特征， 因此下面针对两个色彩图案 A和 B仅仅是颜色色彩的情况进行充分阐述。 仍然见图 1 , 色彩图案 A和色彩图案 B是具有不同颜色特征相互平行的色条 A和色 条 B , 例如色条 A是红色， 色条 B是蓝色， 从 a角度观察防伪纤维部分表面 3时只能看 到红色条而蓝色条被防伪纤维部分表面 3上的凹凸遮挡结构挡住看不见， 此时， 普通人 的感觉纤维是红色的， 从 b角度观察防伪纤维部分表面 3时只能看到红色条而蓝色条被 防伪纤维部分表面 3上的凹凸遮挡结构挡住看不见此时， 普通人的感觉纤维是红色的， 从 c角度观察防伪纤维部分表面 3时同时能看到红色条和蓝色条， 由于色条极细且相距 极近， 普通人的感觉到红色条和蓝色条的复合色效果， 即纤维是偏黑色的。
图 1显示的实施例中具有不同颜色特征相互平行的色条 A和色条 B与防伪纤维的长 度方向平行， 改变角度观察时， 整个纤维由红色变成蓝色， 具有独特的视觉变换效果。 由角度 a变换到角度 b的变换角度最好是不大于 120度。 本设计的视觉特征是在垂直于 纤维长度方向改变角度观察纤维表面时， 其纤维色彩变化最明显。
图 2a、 图 2b中色彩图案 A和色彩图案 B分别是具有不同颜色特征相互平行的 A1、 A2、 A3色彩的組合效果和 Bl、 B2、 B3色彩的组合效果， 色彩 A1— A3和色彩 B1— B3 各自为条状且与防伪纤维的长度方向垂直。 本设计的视觉特征是在顺着纤维长度方向改 变角度观察纤维表面时， 其纤维色彩变化最明显。
图 3中色彩图案 A和色彩图案 B分别是具有不同颜色特征相互平行的 Al、 A2、 A3 色彩的组合和 Bl、 B2、 B3 色彩的组合， 色彩 A1— A3及色彩 B1— B3各自为条状且与 防伪纤维的长度方向的相交角度在 0 ~ 90度之间， 本设计的视觉特征是在于与纤维长度 方向倾斜相应角度再改变角度观察纤维表面时， 其纤维色彩变化最明显。
色彩图案 A 色彩图案 B是图案相同、 色彩特征也相同， 但色彩图案 A和色彩图 案 B在防伪紆维上长度方向上的位置不同的情形， 见图 4, 例如， 色彩图案 A和色彩图 案 B均是黑色， 色彩图案 A分布在纤维的前半部分， 由 Al、 A2、 A3色彩构成， 色彩图 案 B分布在纤维的后半部分， 由 Bl、 B2、 B3色彩构成， 改变角度观察时， 整个纤维在 跳动式发生位置移动， 具有独特的视觉变换效果。
图 5a- g是色彩图案 A和色彩图案 B在防伪纤维上径向分布、 轴向延伸、 但长度方 向位置不同的情形， 色彩图案 A和色彩图案 B在防伪纤维上长度方向上可以是位置完全 重叠、 或者是部分重叠、 或者是部分相接、 或者是相离。 图 5a: 条状色彩图案 A是红色， 条状色彩图案 B是黑色， 色彩图案 A和色彩图案 B轴向位置完全重叠时， 改变角度观察 时， 整个纤维由红色变成黑色， 视觉上纤维的位置没有发生位移， 具有独特的视觉变换 效果； 图 5b: 色彩图案 A和色彩图案 B轴向位置部分重叠时， 改变角度观察时， 视觉上 整个纤维由红色变成黑色且跳动式发生位置移动，但跳动较小具有独特的视觉变换效果; 图 5c: 色彩图案 A和色彩图案 B轴向位置相交时， 改变角度观察时， 视觉上整个纤维由 红色变成黑色且跳动式发生位置移动， 但跳动是首尾相接； 图 5d: 色彩图案 A和色彩图 案 B在轴向的位置相离时， 改变角度观察时， 视觉上整个纤维由红色变成黑色且跳动式 发生位置移动， 但跳动是跨越式的移动， 具有独特的视觉变换效果。
图 5e是色彩图案 A或者是色彩图案 B的颜色不同組合的情形，其颜色可以是单色， 或者是多色的复合。 例如， 条状色彩图案 A是由两条首尾相接的不同颜色的线条組成， 一条是红色 Al、 一条是绿色 A2, 色彩图案 B是只是一条黑色， 改变角度观察时， 视觉 上是整个纤维由红绿双色纤维变成黑色单色纤维， 视觉效果独特。
色彩图案的颜色可以是白色， 或者是无色或者是与防伪材料表面颜色相同的颜色。 图 5f中如果条状色彩图案 A是红色， 条状色彩图案 B是白色， 且色彩图案 B分布在防 伪纤维的全部凸面 3"上，如果防伪材料表面是白色， 改变角度观察时， 整个纤维由红色变 成纤维消失， 具有独特的视觉变换效果； 还比如条状色彩图案 A是黑色， 条状色彩图案 B是黄色， 且色彩图案 B分布在防伪纤维的全部凸面 3"上,如果防伪材料表面也是黄色， 改变角度观察时， 整个纤维由黑色变成纤维消失， 具有独特的视觉变换效果。 所以， 当 色彩图案 B的颜色与防伪材料表面颜色相同时， 纤维截面可以设计成从视觉上色彩图案 A中包含部分或全部色彩图案 B, 但色彩图案 B中不能包含色彩图案 A, 见图 5g；。
本发明的凹凸遮挡结构具有多样性：
凹凸遮挡结构是防伪纤维横截面至少有一个三角形元素， 三角形元素是指至少有一 个顶角及其两相应邻边的截面结构， 典型结构为三角形横截面， 也可为四边形横截面或 多边形截面。 图 1的截面 4为三角形， 色彩图案 A在三角形的一个斜边所在的面 3，上， 色彩图案 B在三角形的另一个斜边所在面 3 "上。三角形是实现能呈现一个色彩图案遮挡 住另一个色彩图,案的典型的凹凸遮挡结构， 且容易满足由角度 a变换到角度 b的变换角 度最好是不大于 120度的要求。
凹凸遮挡结构是由多个三角形并列组合， 每个三角形相应斜边上所有色彩图案的组 合构成色彩图案 A, 每个三角形另一相应斜边上所有色彩图案的组合构成色彩图案 B。 由于纤维很细， 单个三角形形成的凹凸遮挡结构难以正好顶角朝上地呈现在防伪材料表 面， 只好将三角形做成扁平的， 而扁平的三角形在改变观察角度时色彩图案变换的灵敏 度不高，且在纤维宽度一定时色彩图案 A或色彩图案 8会¾1细，会影响视觉效果。 因此， 本发明设计的三角形并列组合能弥补上述的不足。
图 6a— 6b是防伪材料 1中防伪纤维 2横截面为单个三角形的示意图， 其中图 6a是 截面图， 图 6b是平面图。 三角形的二条边所在的斜面上分别有色彩图案 A和 B, 由于防 伪材料有一定的透明性， 色彩图案 A和色彩图案 B呈现在防伪材料表面可为肉眼所见， 当从 a角度观察看到色彩图案 A时色彩图案 B被三角形的凸起结构挡住看不见， 同样， 当从 b角度观察看到色彩图案 B时色彩图案 A被三角形的凸起结构挡住看不见。 另外， 防伪材料 1中的防伪纤维 2是沿所述二条边之间的均分轴 5弯曲， 这样一来就能保证要 么 A面和 B面同时呈现在防伪材料表面，要么第三边 6所在面单独呈现在防伪材料表面。 在这里， 沿均分轴 5弯曲是能准确控制纤维 A、 B所在面同时朝上的关键， 均分轴 5实 际是一个虚拟的控制轴线， 在后面的各视图中所起作用与图 6 系列相同， 目的是为了让 色彩图案 A和色彩图案 B同时呈现在防伪材料 1表面。 截面的第三边 6所在面的颜色是 白色或与防伪材料 1表面的颜色相同。 选择这种三角形结构主要^ ^于以下三方面的理 由：
1、 一般来说， 当色彩线条的宽度在 30微米以下时， 人的肉眼观察便会有些吃力， 三角形结构有相同的纤维高度能观看到较大的色彩面积的特点， 当纸 或塑料薄膜的厚 度较薄时， 无法允许纤维的高度大于纸张或塑料薄膜的厚度， 通常货币纸张的厚度不大 于 90微米， 复印纸的厚度不大于 80微米， 这样一来， 要在这样厚度的纸中加入， 三角 形结构是一个好的选择； 2, 相对横截面为四边形， 三角形横截面本身有较好的稳定性， 能更好地保证在造纸过程中一定的成形压力下色彩图案 A和 B能均衡地呈现在防伪材料 的表面上； 3、 三角形结构的一个特点是边 6对应面的色彩图案也有相同的可能性单独呈 现在防伪材料表面， 由于该面是一个平面没有凹图遮挡结构， 不能产生改变角度而产生 视觉差异， 因此， 为了避免此情形， 我们将该面色彩图案制作成白色或与防伪材料表面 材料相同的颜色， 这样一来， 当该色彩图案呈现在防伪材料表面时， 由于呈现面的纤维 颜色是白色或与防伪材料表面颜色相同， 肉眼看不见， 这样便巧妙地解决了这个问题。
图 7a—7c是防伪材料中防伪纤维横截面为二个并结三角形的示意图， 其中图 7a是 截面图， 图 7b、 7c是平面图。 由于防伪材料有一定的透明性， 三角形的色彩图案 A和色 彩图案 B 呈现在防伪材料表面能为肉眼所见， 当从 a角度观察时看到色彩图案 A (为 A1+A2的合成枧觉效果 ) 而色彩图案 B被三角形挡住看不见， 同样， 当从 b角度观察时 看到色彩图案 B (为 B1+B2的合成视觉效果）而色彩图案 A被三角形挡住看不见。另外， 防伪材料中的纤维可以是沿着均分轴 5弯曲的 （见图 3b ), 也可以是直线的 （见图 3c ), 这样一来就能保证要么色彩图案 A所在面和色彩图案 B所在面同时呈现在防伪材料 1表 面， 要么边 6对应面单独呈现在防伪材料表面 1上。 将边 6面的颜色设计成白色或与防' 伪材料 1表面的颜色相同。 该结构的实际效果在于： 1、 相对单个三角形， 相同的纤维高 度有更大的视觉面积， 这样， 当应用在很薄的纸上时也成为可能， 例如当纸张层的厚度 在 50微朱以下时； 2、 由于纤维整体上是扁的， 当纤维较短且有一定的硬度时， 纤维即., 使不需要弯曲也会确保要么色彩图案 A、 B所在面同时呈现在防伪材料 1表面上， 要么 边 6所在面呈现在防伪材料 1表面上。
图 8a— 8b是防伪材料 1中防伪纤维 2横截面为单个四边形的示意图， 其中图 8a是 截面图， 图 8b是平面图。 防伪纤维 2沿着均分轴 5弯曲， 相对图 6系列中单个三角形来 讲， 其在防伪材料 1 中相同纤维高度的视觉面积要小一半， 但其优点是不管哪面 （色彩 图案 A、 B所在面还是色彩图案 A' B' 所在面）朝上纤维都能呈现改变视角而产生变色 效果， 当纸张或薄膜的厚度较大时， 这也是一种选择。
图 9a— c是防伪材料 1中防伪纤维 2横截面为三个并结四边形的示意图， 其中 图 9a是截面图， 图 9b、 9c是平面图； 相对图 8系列中的单个四边形而言， 相同的纤维 高度有更大的视觉面积， 并且由于纤维整体上是扁的， 当纤维较短且有一定的硬度时， 纤维即使不需要弯曲也会确保色彩图案 A (由 Al、 A2、 A3构成）、 B (由 Bl、 B2、 B3 构成） 同时呈现在防伪材料表面上。
图 10a— 10d是防伪材料中防伪纤维横截面为梯形的示意图， 其中图 10a、 10b是截 面图， 图 10c、 10d是平面图。 梯形具有较好的稳定性， 即使色彩图案 A、 B所在面很倾 斜（越倾斜变角变色的灵敏度越高）也可以十分稳定， 特别是当纤维较短且有一定的硬 度时， 纤维即使不需要弯曲也会确保色彩图案 A、 B所在面同时呈现在防伪村料表面上 (见图 10c ); 图 10a为一个梯形， 相对图 10b二个梯形的组合， 其优点是纤维在纸中的 高度更小， 图 10a种的边 6对应面的色彩是白色或与防伪材料 1表面的颜色相同； 但相 对图 10a, 图 10b不管哪面朝上都能呈现改变视角而产生变色效果， 当纸张或薄膜的厚度 较大时， 这也是一种选择； 图 10a梯形的底边 6对应面是白色或与防伪材料 1表面相同 的颜色。
图 11a— l lf系列是防伪材料 1中防伪纤维 2覆盖有透明材料 7的示意图， 由于透明 材料 Ί的透明性， 因此本发明防伪纤维的具有凹凸遮挡结构的部分表面 3当然也自然呈 现在'防伪材料的表面上。 其中图 lla、 lib是横截面分别为单个三角形和单个四边形纤维 分别覆盖有圆形透明材料 7, 目的是增加纤维的抗压强度，进一步确保在造纸过程中或加 入塑料的过程中纤维截面形状的稳定性； 图 l lc、 lid是横截面分别为单个三角形和单个 四边形纤维覆盖有扁平形的透明材料 7, 目的是不但能增加其抗压强度，进一步确保纤维 截面形状的稳定性， 而且纤维即使不弯曲也会确保 AB 面同时呈现在防伪材料表面上； 图 l le、 l lf是纤维横截面分别为多个三角形和多个四边形覆盖有扁平形的透明材料 7, 目的是增加纤维的抗压强度， 进一步确保在造纸过程中或加入塑料的过程中纤维截面形 状的稳定性。
图 12a— 12e系列是防伪纤维 2的色彩图案 A和色彩图案 b之间有一层起遮光作用 的真空镀铝的横截面示意图。 在具体的实践中我们发现， 由于纤维的尺寸很小， 当用有 机材料制作该纤维时， 色彩图案 A和 B之间存在彼此串色， 其结果是色彩图案 A和 B 鲜艳度受到严重的影响， 从而导致了色彩图案 A和 B之间的枧觉差异不明显。 为了解决 这一个问题， 我们在色彩图案 A和 B之间设计了一个镀铝层 8 , 因为镀铝不但成本低， 而且当镀铝层厚度仅在 0.2微米时就能产生完全的遮光效果。 图 12a是纤维横截面为三 角形， 镀铝层 8在材料中间的示意图， 其相当于两种不同色彩的纤维的組合， 在组合的 交界面上镀有铝层； 图 12b是纤維横截面为三角形， 镀铝层 8在纤维表面的示意图， 镀 铝后在纤维表面还可以附着一层颜色， 也可以就是一层镀铝； 图 12c是横截面为四边形 镀铝层在纤维中间的示意图， 镀铝层 8在两种不同颜色纤维的交界面上； 图 12d是横截 面为四边形镀铝层在纤维表面的示意图， 镀铝层 8在轴 5—侧的表面上， 镀铝后在纤维 表面还可以附着一层颜色， 也可以就是一层镀铝； 图 8e是纤维横截面多个并结三角形， 镀铝层 8在防伪纤维相同视觉的三角形的表面 B1B2B3上的示意图； 另外， 还可以先对 整根防伪纤维的表面镀铝， 然后再在相应的面印上色彩图案人和：6。
所述的凹凸遮挡结构的边可以是弧形， 见图 13 , 还可以为锯齿状或其他不规则的曲 边。
在上述实施例中， 防伪材料为有机薄膜。 在过去， 将防伪纤维用于加入塑料薄膜中 进行防伪是一个空白， 原因是塑料薄膜难以撕开并且易于与防伪纤维融为一体， 因此， 塑料薄膜中的防伪纤维根本无法撕开观察或用针挑出观察， 当仿冒者有印刷细线去模仿 其视觉特征时， 根本找不到任何简单的方法予以区别。 但由于本发明中是不需要撕开观 察的， 故其可以用于塑料薄膜领域。
在上述实施例中， 防伪纤维为荧光纤维， 当在荧光灯的照射下， 改变观察角度肉眼 便可看到明显的视觉差异。
在上述实施例中， 防伪纤维为红外线致发光紆维， 当在红外线的照射下， 改变观察 角度肉眼便可看到明显的视觉差异。
控制防伪纤维部分表面 3在防伪材料的表面呈现的方法：
要实现本发明的目的， 控制在实际生产过程中纤维有效的凹凸遮挡结构一定呈现在 防伪材料表面是必不可少的。 根据理论分析和大量的实验证明， 在造纸过程中， 当纤维 具有一定的弹性硬度时， 整个纤维形状的最大投影面一定朝上且呈现在纸张的表面， 本 发明防伪纤维的投影面积是指其实体的投影线对应的最小方形面积， 即： 当防伪纤维是 直线且纤维的横截面在长度方向上等同时， 最小方形面积是防伪纤维的实体投影线的面 积， 见图 14a中的斜线覆盖的区域； 当防伪纤维是直线且纤维的横截面在长度方向上不 同时， 最小方形面积是防伪纤维的实体投影面积的最宽处与纤维长度的乘积面积， 见图 14b中的斜线覆盖的区域； 当防伪纤维是弯曲线时，最小方形面积是一个刚好覆盖防伪纤 維的实体弯曲投影线构成的方形面积， 见图 14c中斜线覆盖的区域。
另一种描述与上述的实际效果一样， 用一方体去包含防伪纤维 2, 能全部包含防伪 纤维的最小方体的最大的两个表面对应于防伪纤维的部分表面 3时， 由于最小方体的两 个最大表面能态最低， 必然朝向防伪材料表面， 因此具有凹凸遮挡结构的部分表面 3能 呈现在防伪材料表面。
据此， 本发明作了以下专门设计, 这些设计也同样适用于将防伪纤维分布在有一层 纸张的夹层中， 或者是分布在有一层塑料膜的夹层中， 或者是分布在有一层单层塑料薄 膜中：
防伪纤维 2是弯曲形状， 弯曲纤维的上表面为防伪纤维部分表面 3 , 见图 15a, 15b。 防伪纤维长度方向的横截面在平行于防伪材料表面的最大宽度 c小于等于横截面在垂直 于防伪材料表面的最大宽度 d,也就是防伪纤维 2长度方向的横截面的长轴 d与防伪材料 表面垂直， 见图 15b, 因此在纤维为弯曲时， 其横截面可以不是扁平状仍能使需要的防伪 纤维的部分表面 3呈现在纸张的表面。 弯曲防伪纤维 2的因弯曲所跨越的横向最大长度 为其几何宽度 e, 见图 15a, 当该几何宽度 e至少是纤维长度方向的横截面的长轴 d长度 的二倍以上时， 弯曲防伪纤维 2能完全按其自然弯度呈现在防伪材料的表面。
如果防伪纤维 2在纤维长度方向的横截面至少有一部分 9是扁平状， 扁平状对应的 扁平面呈现在防伪材料的表面上， 见图 16。 也可以是防伪纤维 2在纤维长度方向的横截 面全部是扇平状， 扁平状对应的扁平面呈现在防伪材料的表面上。 防伪纤维 2的扁平状 部分最好是无色， 或者是白色， 或者是与防伪材料 1表面相同的颜色。
本发明防伪纤维的材料可以有机材料或金属材料。
本发明防伪材料是指纸或纸板或是有机薄膜。 防伪纤维 2可夹在二层纸浆层之间， 或者是夹在二层有机薄膜之间； 或者是夹在纸浆层与其它材料层之间； 或者是夹在有机 薄膜层与其它材料层之间； 或者是粘附在防伪材料的表面， 或者是其他方式嵌入防伪材 料的表面。
本发明防伪纤维的各种凹凸结构可以通过模具生成。 凹凸结构上的色彩图案可以通 过贴膜、 精细印刷、 热压等方式制作在防伪纤维上； 对于单纯颜色构成的色彩图案， 可 以通过喷嘴喷出不同颜色然后合成的方式制作， 也可通过不同颜色纤维热压构成。
防伪纤维嵌入纸张的方法可以采用直接在抄纸工艺中加入纸浆中， 也可通过多层纸 压合的方式。

Claims

权利要求
1、 一种防伪材料， 其上分布有防伪纤维 （2), 所述防伪纤维 （2) 的部分表面 （3) 呈现在所述防伪材料（ 1 ) 的表面 （ 1，）上， 其特征在于所述部分表面 （3 )具有凹凸遮 挡结构， 其上分布有至少二个色彩图案 A和 B, 所迷至少二个色彩图案 A和 B在所述部 分表面（ 3 )上有明显的视觉差异，使在呈现所述部分表面（ 2 )的防伪材料（ 1 )表面（ Γ ) 上从不同角度观察所述部分表面 （3) 时， 能分别看到色彩图案人和
2、 根据权利要求 1所述的防伪材料， 其特征是： 呈现所述部分表面 （3) 的防伪材 料（ 1 )表面 （ 1' )上至少存在二个观察角度 a和 b, 从 a角度观察防伪纤维 （ 2 )所述部 分表面 （3) 时看到色彩图案 A而色彩图案 B被防伪纤维（2)所述部分表面 （3)上的 凹凸遮挡结构挡住看不见， 从 b角度观察防伪纤维（2)所述部分表面 （3) 时看到色彩 图案 B而色彩图案 A被防伪纤维（ 2 )所述部分表面（ 3 )上的凹凸遮挡结构挡住看不见。
3、 根据权利要求 1或 2所述的防伪材料， 其特征是： 所述防伪纤维（2) 的凹凸遮 挡结构是由其截面（4)具有的至少一个三角形元素构成的， 色彩图案 A在所述三角形元 素顶角的一个斜边所在的表面 （3')上， 色彩图案 B在所述顶角的另一个斜边所在的表 面 （3")上。
4、 根据权利要求 3所述的防伪材料， 其特征是： 所述防伪纤维（2) 的横截面 （4) 是一个三角形或由多个并结的三角形构成。
5、 根据权利要求 4所述的防伪材料， 其特征是： 所述防伪纤维（2)是横截面 （4) 为一个三角形的弯曲纤维， 三角形的二条边所在的斜面上分别有色彩图案 A和 B, 第三 条边对应面上的色彩是白色或与所述防伪材料 ( 1 )表面颜色相同， 防伪纤维沿所述二条 边之间的均分轴（5) 弯曲。
6、 根据权利要求 3所述的防伪材料， 其特征是： 所述防伪纤维（2) 的横截面是一 个四边形或由多个并结的四边形组成， 防伪纤维（2)沿均分轴（5) 弯曲。
7、 根据权利要求 3所述的防伪材料， 其特征是： 所述防伪纤维 （2) 的横截面是一 个梯形或由二个并结的梯形组成。
8、 根椐权利要求 1一 7之一所述的防伪材料， 其特征是： 所述防伪纤维（2)的所述 部分表面 （3)在防伪材料（1)表面的投影面为防伪纤维（2) 的最大投影面或与最大投 影面平行。
9、 根据权利要求 1或 2或 3所述的防伪材料， 其特征是： 所述防伪纤维（2)是能 以自身弯曲或弯折态呈现在防伪材料（ 1 )表面上的弯曲或弯折纤维。
10、 根据权利要求 1一 7之一所迷的防伪材料， 其特征是： 所述防伪纤维（2) 的全 部长度或部分长度方向的横截面是扁平状， 所述防伪纤维 （2) 的所述部分表面 （3)位 于扁平面上或在防伪材料（ 1 )上具有共同的投影面的防伪纤维（ 1 )表面上。
11、 根据权利要求 1一 10之一所述的防伪材料， 其特征是： 所述防伪纤维（2)的外 表面还覆盖有透明材料（7)。
12、 根据权利要求 11所述的防伪材料， 其特征是： 所述防伪纤维（2) 的外表面覆 盖的透明材料 ( 7 )成扁平状， 所述防伪纤维（2 ) 的所述部分表面 （3 )在透明材料（7 ) 的对应的防伪纤维（2 )表面上。
13、 根据权利要求 1_ 12之一所述的防伪材料， 其特征是： 所述防伪材料（1 )是有 机薄膜。
14、 根据要求 1— 13之一所述的防伪材料， 其特征是： 所迷防伪纤维（ 2 )还包括由 加入了荧光材料或加入了红外线显光材料制成的纤维。
15、 根据要求 1— 14之一所述的防伪材料， 其特征是： 所述至少二个色彩图案 A和 B所在表面之间存在至少一层起遮光作用的真空镀铝层（ 8 )。
16、 一种嵌入权利要求 1— 15之一防伪材料中的防伪纤维， 具有能够呈现在所述防 伪材料（ 1 )的一个表面 （ 1' )的部分表面 （ 3 )， 其特征是： 所述部分表面 （ 3 )具有凹凸 遮挡结构， 其上分布有至少二个色彩图案 A和 B， 所述至少二个色彩图案 A和 B在所述 部分表面 （ 3 )上具有明显的枧觉差异， 使在呈现所述部分表面 ( 3 )的防伪材料（ 1 )表 面 （1， ） 上从不同角度观察所述部分表面 （3 ) 时， 能分别看到色彩图案 A和^
17、 根据权利要求 16所述的防伪纤维， 其特征是： 呈现所述部分表面 （3 ) 的防伪 材料（ 1 )表面 （ 1' )上至少存在二个观察角度 a和 b， 从 a角度观察防伪纤维（ 2 )所述 部分表面 （ 3 ) 时看到色彩图案 A而色彩图案 B被防伪纤维（ 2 )所述部分表面 （ 3 )上 的凹凸遮挡结构挡住看不见， 从 b角度观察防伪纤维（2 )所述部分表面 （3 ) 时看到色 彩图案 B而色彩图案 A被防伪纤维（2 )所述部分表面 （3 )上的凹凸遮挡结构挡住看不 见。
18、根据权利要求 16或 17所述的防伪纤维， 其特征是： 所述部分表面（ 3 )在所迷 防伪材料（1 ) 的投影面为所述防伪纤维（2 ) 的最大投影面或与最大投影面平行。
19、 根椐权利要求 16或 17所述的防伪纤维， 其特征是所述防伪纤维（ 2 )为能以自 身弯曲或弯折态呈现在防伪材料（1 )表面上的弯曲或弯折纤维。
20、根据权利要求 16或 17所述的防伪纤维， 其特征是所述防伪纤维（2 )的全部长 度或部分长度方向的横截面 （4 )是扁平状， 所述防伪纤维（2 )的所述部分表面 （3 )位 于扁平面上或在防伪材料上具有共同的投影面的防伪纤维表面上。
PCT/CN2005/001543 2004-09-24 2005-09-23 Anti-forge material distributed anti-fibers having visual character WO2006032212A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US11/663,725 US20080053633A1 (en) 2004-09-24 2005-09-23 Anti-Fake Material Distributed with Anti-Fake Fibers Having Visual Characteristics Incapable of Being Simulated Via Printing
AU2005287753A AU2005287753A1 (en) 2004-09-24 2005-09-23 Anti-forge material distributed anti-fibers having visual character
CA002581858A CA2581858A1 (en) 2004-09-24 2005-09-23 Anti-fake material distributed with anti-fake fibers having visual characteristics incapable of being simulated via printing
EA200700675A EA011271B1 (ru) 2004-09-24 2005-09-23 Защищенный от подделки материал с распределенным защищающим от подделки волокном, обладающий визуальными характеристиками, которые не могут подделываться печатью
BRPI0517324-8A BRPI0517324A (pt) 2004-09-24 2005-09-23 material antifraude distribuìdo com fibras antifraude possuindo qualidades visuais incapazes de serem simuladas através de impressão
EP05791528A EP1793039A4 (en) 2004-09-24 2005-09-23 ANTIFÄLSCHUNGSMATERIAL WITH DISTRIBUTED ANTIFASERS WITH VISUAL CHARACTERISTICS
JP2007532751A JP2008520754A (ja) 2004-09-24 2005-09-23 印刷により模倣不可能な視覚特性を有する偽造防止繊維を分配した偽造防止材料
MX2007003450A MX2007003450A (es) 2004-09-24 2005-09-23 Material a prueba de falsificacion distribuido con fibras a prueba de falsificacion que tienen carcteristicas visuales incapaces de ser imitadas mediante impresion.

Applications Claiming Priority (2)

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CN200410009603.4 2004-09-24
CNA2004100096034A CN1600988A (zh) 2004-09-24 2004-09-24 一种防伪材料

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JP (1) JP2008520754A (zh)
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CN (1) CN1600988A (zh)
AU (1) AU2005287753A1 (zh)
BR (1) BRPI0517324A (zh)
CA (1) CA2581858A1 (zh)
EA (1) EA011271B1 (zh)
MX (1) MX2007003450A (zh)
WO (1) WO2006032212A1 (zh)
ZA (1) ZA200703314B (zh)

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CA2581858A1 (en) 2006-03-30
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EP1793039A4 (en) 2010-03-24
KR20070061890A (ko) 2007-06-14
EP1793039A1 (en) 2007-06-06
AU2005287753A1 (en) 2006-03-30
KR100915724B1 (ko) 2009-09-04
EA200700675A1 (ru) 2007-08-31
JP2008520754A (ja) 2008-06-19
MX2007003450A (es) 2007-08-06
CN1600988A (zh) 2005-03-30
ZA200703314B (en) 2008-09-25
US20080053633A1 (en) 2008-03-06

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