CN112813732B - Preparation method of anti-counterfeiting paper and anti-counterfeiting paper - Google Patents
Preparation method of anti-counterfeiting paper and anti-counterfeiting paper Download PDFInfo
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- CN112813732B CN112813732B CN202110034271.9A CN202110034271A CN112813732B CN 112813732 B CN112813732 B CN 112813732B CN 202110034271 A CN202110034271 A CN 202110034271A CN 112813732 B CN112813732 B CN 112813732B
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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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
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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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
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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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
- D21H25/06—Physical treatment, e.g. heating, irradiating of impregnated or coated paper
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Abstract
The invention provides a preparation method of anti-counterfeiting paper and the anti-counterfeiting paper. The preparation method of the anti-counterfeiting paper comprises the following steps: applying a photosensitive material over the paper substrate to allow the photosensitive material to penetrate into the paper substrate; writing and curing variable anti-counterfeiting information and/or non-variable anti-counterfeiting information into a region of the paper substrate where the photosensitive material is applied, wherein the variable anti-counterfeiting information comprises visible variable anti-counterfeiting information and non-visible variable anti-counterfeiting information; cleaning the photosensitive material; and drying and flattening the paper substrate to obtain the anti-counterfeiting paper. The technical scheme of the invention can provide the anti-counterfeiting paper with excellent anti-counterfeiting performance.
Description
Technical Field
The invention relates to the technical field of anti-counterfeiting products, in particular to a preparation method of anti-counterfeiting paper and the anti-counterfeiting paper.
Background
In the related technology of paper anti-counterfeiting, the technology is applied to the first-push watermark anti-counterfeiting which is widely applied, almost every country paper currency applies the technology, and the watermark can resist the characteristics of color copying and computer printing and can be intuitively identified, thus the technology belongs to one of ideal anti-counterfeiting technologies.
However, the watermark is fixed in the form of single-layer watermark, multi-layer watermark, high-gloss white watermark, black watermark and other watermarks, namely, the watermark is formed by piling different numbers of fibers in different areas in the papermaking process by using a watermark roller with a pre-rolled watermark pattern in the papermaking process. The formation of the watermark has a great relation with the papermaking process, which determines the limitation of single fixation of the watermark pattern.
In summary, one of the disadvantages of the related art is that: the anti-counterfeiting performance of the watermark anti-counterfeiting product with single and fixed pattern is not ideal.
Disclosure of Invention
The present invention aims to solve at least one of the above technical problems.
To this end, a first aspect of the invention provides a method of making an anti-counterfeit paper sheet.
A second aspect of the invention provides a security paper.
In order to achieve the first aspect of the present invention, the technical solution of the present invention provides a method for preparing anti-counterfeiting paper, including: applying a photosensitive material over the paper substrate to allow the photosensitive material to penetrate into the paper substrate; writing and curing variable anti-counterfeiting information and/or non-variable anti-counterfeiting information into a region of the paper substrate where the photosensitive material is applied, wherein the variable anti-counterfeiting information comprises visible variable anti-counterfeiting information and non-visible variable anti-counterfeiting information; cleaning the photosensitive material; and drying and flattening the paper substrate to obtain the anti-counterfeiting paper.
The technical scheme can effectively improve the anti-counterfeiting capacity and increase the counterfeiting difficulty of the encrypted anti-counterfeiting paper, and the anti-counterfeiting paper formed by the technical scheme further improves the possibility of identification counterfeiting and can improve the use safety performance of the anti-counterfeiting paper.
In addition, the technical scheme of the invention can also have the following additional technical characteristics:
in the above technical solution, the variable anti-counterfeiting information is visible variable anti-counterfeiting information and invisible variable anti-counterfeiting information, and the invisible variable anti-counterfeiting information is transparent variable anti-counterfeiting information or semitransparent variable anti-counterfeiting information; and/or the variable security information comprises one or a combination of the following: variable anti-counterfeiting information of characters, variable anti-counterfeiting information of numbers, variable anti-counterfeiting information of bar codes, variable anti-counterfeiting information of pictures, variable anti-counterfeiting information of two-dimensional codes and variable anti-counterfeiting information of multi-dimensional codes. According to the technical scheme, the variable anti-counterfeiting information can be set to be transparent variable anti-counterfeiting information or semitransparent variable anti-counterfeiting information, so that the variable anti-counterfeiting information is used as hidden invisible variable anti-counterfeiting information. The technical scheme designs and draws various and easily-changeable variable anti-counterfeiting information on each anti-counterfeiting paper. Therefore, the technical scheme can effectively improve the anti-counterfeiting capacity, increase the counterfeiting difficulty of the encrypted anti-counterfeiting paper, and the anti-counterfeiting paper formed by the technical scheme further improves the possibility of identification counterfeiting and can improve the use safety performance of the anti-counterfeiting paper.
In the above technical solution, the variable anti-counterfeiting information includes invisible variable anti-counterfeiting information, and the variable anti-counterfeiting information and/or the non-variable anti-counterfeiting information is written into and cured in an area of the paper substrate where the photosensitive material is applied, specifically including: controlling the light spot to move in the area of the paper substrate, to which the photosensitive material is applied, by the optical scanning device so as to draw variable anti-counterfeiting information, and exposing and solidifying the variable anti-counterfeiting information; or covering the area of the paper substrate, to which the photosensitive material is applied, with a shape-variable shielding layer, then drawing variable anti-counterfeiting information, and irradiating the area of the paper substrate, to which the photosensitive material is applied, with an irradiation light source to expose and solidify the variable anti-counterfeiting information; the shielding layer with the changeable shape comprises an electronic paper shielding layer, a light emitting diode screen shielding layer, a Liquid Crystal Display (LCD) shielding layer and a plasma screen shielding layer; or irradiating the area of the paper substrate, to which the photosensitive material is applied, by using a numbering machine with hollowed-out numbers and irradiation light sources so as to draw variable anti-counterfeiting information, and exposing and solidifying the variable anti-counterfeiting information.
The technical scheme can adopt devices such as an optical scanning device, a shielding layer with a changeable shape or a hollowed-out number, a numbering machine with an irradiation light source and the like to draw and write invisible variable anti-counterfeiting information. The technical scheme can design and draw various and easily-changeable variable anti-counterfeiting information on each anti-counterfeiting paper.
In any of the above technical solutions, the variable anti-counterfeiting information includes visible variable anti-counterfeiting information, and writing the variable anti-counterfeiting information into the substrate specifically includes: the visible variable anti-counterfeiting information is written into the base material through digital printing, ink-jet printing, offset printing, gravure printing, screen printing, laser marking or laser engraving.
The technical scheme can ensure that the visible variable anti-fake information has clear lines and boundaries.
In any of the above embodiments, the photosensitive material comprises at least one of the following or a combination thereof: acrylate system compound photo-curing material, methacrylate system compound photo-curing material, acrylamide system compound photo-curing material, N-vinyl system compound photo-curing material, thiol-olefin system compound photo-curing material, thiol-alkyne system compound photo-curing material, vinyl ether system compound photo-curing material, oxetane system compound photo-curing material, epoxy system compound photo-curing material, cyclized rubber-bis-azide system compound negative photoresist, polyethylene cinnamate system compound negative photoresist.
The material has excellent performance and low cost, and can improve the stability, reliability and definition of the anti-counterfeiting information after solidification.
In any of the above embodiments, applying a photosensitive material on a paper substrate specifically includes: roll-coating a photosensitive material over a paper substrate; or spraying a photosensitive material on the paper substrate; or dip coating a photosensitive material on top of the paper substrate; or printing a photosensitive material on top of the paper substrate.
The photosensitive material of the technical scheme can be processed on the surface of the base material of the anti-counterfeiting paper in a roller coating, spraying, dip coating and other modes so as to ensure the writing effect of the variable anti-counterfeiting information.
In any of the above technical solutions, cleaning the photosensitive material specifically includes: respectively adopting a solvent and a cleaning agent to clean the photosensitive material; wherein the solvent comprises one or a combination of the following: water, aqueous solutions containing surfactants, acidic aqueous solutions, alkaline aqueous solutions, organic solutions, the cleaning agents comprising one or a combination of the following: pure water, absolute ethyl alcohol and acetone.
The solvent and the cleaning agent can sufficiently and effectively clean the photosensitive material so as to ensure that the variable anti-counterfeiting information is clear and identifiable.
In any of the above technical solutions, the visible variable anti-counterfeiting information and the invisible variable anti-counterfeiting information are separately set or correspondingly set on the anti-counterfeiting paper.
The technical mode can adopt invisible variable anti-counterfeiting information for anti-counterfeiting verification, and can also adopt the common cooperation of the visible variable anti-counterfeiting information and the invisible variable anti-counterfeiting information so as to further improve the anti-counterfeiting effect.
In any of the above technical solutions, the visible variable anti-counterfeiting information is the same as the non-visible variable anti-counterfeiting information in content; or the visible variable security information has at least one distinction from the content of the non-visible variable security information.
The visible variable anti-counterfeiting information and the invisible variable anti-counterfeiting information in the technical scheme can contain the same information or patterns and can also be different.
In any of the above technical solutions, the transmittance of the invisible variable anti-counterfeiting information reaches the transmittance of the white watermark; the transparency of the invisible variable security information is between the transparency of the white watermark and the transparency of the black watermark.
The technical scheme can adjust and change the transmittance of the invisible variable anti-counterfeiting information, so that the transmittance of the invisible variable anti-counterfeiting information is rich in change, and the anti-counterfeiting effect is improved.
In any of the above embodiments, writing and curing variable anti-counterfeiting information in an area of the paper substrate to which the photosensitive material is applied specifically includes: and irradiating the area of the paper substrate, to which the photosensitive material is applied, by using an irradiation light source with the irradiation wavelength ranging from 190 nanometers to 510 nanometers, so that the variable anti-counterfeiting information is solidified.
The anti-counterfeiting paper formed by the technical scheme further improves the possibility of identification counterfeiting and can improve the use safety performance of the anti-counterfeiting paper.
In order to realize the second aspect of the invention, the technical scheme of the invention provides an anti-counterfeiting paper prepared by adopting the preparation method of the anti-counterfeiting paper according to any technical scheme of the invention.
The anti-counterfeiting paper adopts the preparation method of the anti-counterfeiting paper according to any one of the technical schemes, so that the anti-counterfeiting paper has all the beneficial effects of the preparation method of the anti-counterfeiting paper according to any one of the technical schemes. In particular, the anti-counterfeiting paper of the technical scheme realizes first-line anti-counterfeiting which is easy to identify by the public through visible variable anti-counterfeiting information, and can be provided with machine-readable second-line anti-counterfeiting characteristics through invisible variable anti-counterfeiting information.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a flow chart of steps of a method for producing an anti-counterfeit paper sheet according to an embodiment of the present invention;
FIG. 2 is one of the schematic diagrams of the method for producing an anti-counterfeit paper sheet according to an embodiment of the present invention;
FIG. 3 is a second schematic diagram of a method for producing an anti-counterfeit paper sheet according to an embodiment of the present invention;
FIG. 4 is a schematic illustration of an anti-counterfeit paper sheet according to one embodiment of the present invention;
FIG. 5 is a second schematic view of an anti-counterfeit paper sheet according to an embodiment of the present invention;
fig. 6 is a third schematic view of an anti-counterfeit paper sheet according to an embodiment of the present invention.
The correspondence between the reference numerals and the component names in fig. 2 to 6 is:
100: anti-counterfeit paper, 110: first anti-counterfeiting area, 120: second security area, 130: visible variable security information, 140: invisible variable security information, 150: paper substrate, 160: photosensitive material, 170: shielding layer, 180: variable security information.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
The method of manufacturing the security paper and the security paper 100 according to some embodiments of the present invention are described below with reference to fig. 1 to 6.
Example 1:
as shown in fig. 1, this embodiment provides a method for preparing anti-counterfeiting paper, which includes:
step S102, applying a photosensitive material on the paper substrate to enable the photosensitive material to permeate into the paper substrate;
step S104, writing and solidifying variable anti-fake information and/or non-variable anti-fake information into a region of the paper substrate, to which the photosensitive material is applied, wherein the variable anti-fake information comprises visible variable anti-fake information and non-visible variable anti-fake information;
step S106, cleaning the photosensitive material;
step S108, drying and flattening the paper substrate to obtain the anti-counterfeiting paper.
In some implementations of this example, the writing and curing of the variable and/or non-variable security information to the area of the paper substrate to which the photosensitive material is applied specifically includes: the light spot is controlled by the optical scanning device to move in the area of the paper substrate where the photosensitive material is applied so as to draw variable anti-counterfeiting information, and the variable anti-counterfeiting information is exposed and solidified.
In some implementations of this example, the writing and curing of the variable and/or non-variable security information to the area of the paper substrate to which the photosensitive material is applied specifically includes: covering the area of the paper substrate, to which the photosensitive material is applied, with a shape-variable shielding layer to draw variable anti-counterfeiting information, and irradiating the area of the paper substrate, to which the photosensitive material is applied, with an irradiation light source to expose and cure the variable anti-counterfeiting information; the shielding layer with the changeable shape comprises an electronic paper shielding layer, a light emitting diode screen shielding layer, a liquid crystal screen shielding layer and a plasma screen shielding layer.
In some implementations of this example, the writing and curing of the variable and/or non-variable security information to the area of the paper substrate to which the photosensitive material is applied specifically includes: and irradiating the area of the paper substrate, to which the photosensitive material is applied, by adopting a numbering machine with hollowed-out numbers and an irradiation light source so as to draw variable anti-counterfeiting information, and exposing and solidifying the variable anti-counterfeiting information.
Wherein the photosensitive material is composed of the following materials: acrylate system compound photo-curing material, methacrylate system compound photo-curing material, acrylamide system compound photo-curing material, N-vinyl system compound photo-curing material, thiol-olefin system compound photo-curing material, thiol-alkyne system compound photo-curing material, vinyl ether system compound photo-curing material, oxetane system compound photo-curing material, epoxy system compound photo-curing material, cyclized rubber-bis-azide system compound negative photoresist, polyethylene cinnamate system compound negative photoresist.
The writing mode of the embodiment can be specifically that the writing mode is directly cured through laser scanning or is completed through exposure and curing of a variable mask.
The visible variable anti-counterfeiting information (i.e. visible variable pattern) and the invisible variable anti-counterfeiting information (i.e. hidden high-transmittance variable pattern) of the embodiment can be used independently or matched one-to-one or one-to-many. The visible variable anti-counterfeiting information and the invisible variable anti-counterfeiting information can contain the same information or patterns or can also be different.
The paper substrate of this embodiment is a substrate that is opaque and can be etched or perforated in-line by a laser, for example: flexible PET films (i.e., polyethylene terephthalate films), plastic substrates, paper substrates, composite substrates, and the like.
The specific shape or pattern of the variable anti-counterfeiting information is controlled by laser, the pattern is designed according to software, the opaque plate is synchronously etched, a template with a hollowed pattern is formed, the template shields the photosensitive material, and light at the hollowed part is solidified by the photosensitive material. The irradiation light source of the embodiment comprises one or more of a UV polar lamp light source (namely an ultraviolet polar lamp light source), a UV electrodeless lamp light source (namely an ultraviolet electrodeless lamp light source), a UV-LED light source (namely an ultraviolet-light emitting diode light source), a laser light source or a blue light lamp light source. Wherein the emission wavelength of the irradiation light source is in the range of 190 nm to 510 nm.
The shape-variable shielding layer of the embodiment is an electronic paper or a display screen, and the embodiment can utilize a computer to control the electronic paper or the display screen, is arranged above a paper substrate coated with a photosensitive material, and designs variable anti-counterfeiting information according to requirements, so that the electronic paper or the display screen is used as a template with different light transmission effects.
Aiming at the implementation mode of writing variable anti-counterfeiting information into the numbering machine, the embodiment can design the basic number into a hollowed part, and a controllable laser or ultraviolet light emitting component is arranged in the intermediate shaft of the numbering machine. The light writes the photosensitive material through the hollowed serial number and is solidified at the same time. When the numbers rotate, the sequence numbers are adjusted to correspondingly form watermark numbers with different sequence numbers.
The principle of writing and curing variable security information to the area of the paper substrate where the photosensitive material is applied in this embodiment is as follows.
The photosensitive material in this embodiment undergoes a corresponding change in performance due to photochemically sensitive properties in the exposed state, and the solubility of the photosensitive material employed in the corresponding solvent after exposure and before exposure is significantly changed. The uncured photosensitive material can be removed by washing with a solvent after exposure. Wherein the photosensitive material can be dissolved by a solvent before curing, but the photosensitive material is difficult to be dissolved after exposure. Thus, the areas of the paper substrate to which the photosensitive material is applied form a transparent or translucent (i.e., different transparency) hidden high transmittance variable information pattern.
The present embodiment can irradiate the region of the photosensitive molecular layer with a laser light of a specific frequency corresponding to the photosensitive molecule, and generate a new molecule to cure the photosensitive material.
The embodiment can also utilize lasers with different specific frequencies and control the moving track of the laser spots so as to convert the information to be encrypted into the specific arrangement of new molecules in different areas and solidify the new molecules, thereby realizing the reading, writing or encryption of the information.
The embodiment can also determine the moving track of the laser probe or the laser spot according to the information which needs to be encrypted, so that new molecules generated by the photosensitive material in the area of the paper substrate where the photosensitive material is applied form specific encrypted digital, text or pattern information, and simultaneously the photosensitive material is solidified.
In addition, the embodiment can select photosensitive molecules which react with light as basic photosensitive materials for drawing encryption information, molecules of the materials can generate chemical reactions including displacement, decomposition, combination and double decomposition under the influence of electromagnetic waves with certain frequency, the original molecules can generate new molecules by conversion, and under proper conditions, the original molecules can only react with light with the wavelength below a specific wavelength (namely, above the specific frequency) to generate new molecules, and are insensitive to light with the wavelength higher than the specific wavelength and do not generate chemical reactions.
The embodiment combines the watermark with information anti-counterfeiting, integrates and thereby obtains anti-counterfeiting paper to change the fixed watermark in the related technology into a variable watermark. The variable anti-counterfeiting information in this embodiment includes visible variable anti-counterfeiting information and invisible variable anti-counterfeiting information (also referred to as hidden high-transmittance variable anti-counterfeiting information). In this embodiment, the variable anti-counterfeiting information is written and cured in the area where the photosensitive material is applied to the paper substrate, so that each piece of paper has different watermarks, namely: forming a variable watermark. The variable anti-counterfeiting information in the form of watermark comprises visible variable anti-counterfeiting information 130 and/or invisible variable anti-counterfeiting information 140, and the variable anti-counterfeiting information can be any two combinations of numbers, letters, characters, numbers, letters and characters, a bar code, a two-dimensional code, a multi-dimensional code and the like which are printed by laser or ink jet. The embodiment can adopt devices such as an optical scanning device, a shielding layer with a variable shape or a hollowed-out number, a numbering machine with an irradiation light source and the like to draw and write the variable anti-counterfeiting information. The embodiment can design and draw various and easily-changeable variable anti-counterfeiting information on each anti-counterfeiting paper. Therefore, the anti-counterfeiting capacity can be effectively improved, the counterfeiting difficulty of the encrypted anti-counterfeiting paper is increased, the anti-counterfeiting paper formed by the embodiment further improves the possibility of identification counterfeiting, and the use safety performance of the anti-counterfeiting paper can be improved. In addition, the anti-counterfeiting paper of the embodiment realizes the first-line anti-counterfeiting which is easy to identify by the public through the visible variable anti-counterfeiting information, and can be provided with the two-line anti-counterfeiting characteristics which can be read by a machine through the invisible variable anti-counterfeiting information.
Example 2:
the embodiment provides a method for preparing anti-counterfeiting paper, and the embodiment further comprises the following technical characteristics besides the technical characteristics of the embodiment.
In some implementations of this example, the variable security information includes invisible variable security information, and the application of the photosensitive material over the paper substrate specifically includes: a photosensitive material is roll coated over the paper substrate. In some implementations of this example, the application of the photosensitive material over the paper substrate specifically includes: a photosensitive material is sprayed over the paper substrate. In some implementations of this example, the application of the photosensitive material over the paper substrate specifically includes: a photosensitive material is dip coated over the paper substrate. In some implementations of this example, the application of the photosensitive material over the paper substrate specifically includes: a photosensitive material is printed over the paper substrate. The photosensitive material of the embodiment can be processed on the surface of the base material of the anti-counterfeiting paper in a roller coating, spraying, dip coating and other modes so as to ensure the writing effect of the variable anti-counterfeiting information.
In some implementations of this example, the visible variable security information is written to the paper substrate by digital printing or inkjet printing or offset printing or gravure printing or screen printing or laser marking or laser engraving. The embodiment can clearly write the visible variable anti-counterfeiting information into the paper substrate so as to ensure that lines and boundaries of the visible variable anti-counterfeiting information are clear.
Example 3:
the embodiment provides a method for preparing anti-counterfeiting paper, and the embodiment further comprises the following technical characteristics besides the technical characteristics of the embodiment.
The method for cleaning the photosensitive material specifically comprises the following steps: and cleaning the photosensitive material by using a solvent and a cleaning agent respectively. Wherein the solvent comprises one or a combination of the following: water, aqueous solutions containing surfactants, acidic aqueous solutions, alkaline aqueous solutions, organic solutions, the cleaning agents comprising one or a combination of the following: pure water, absolute ethyl alcohol and acetone. The solvent and the cleaning agent can sufficiently and effectively clean the photosensitive material so as to ensure that the variable anti-counterfeiting information is clear and identifiable.
Example 4:
the embodiment provides a method for preparing anti-counterfeiting paper, and the embodiment further comprises the following technical characteristics besides the technical characteristics of the embodiment.
In some implementations of this example, the variable security information is transparent variable security information or translucent variable security information. The variable security information may be set to be transparent variable security information or semitransparent variable security information, so that the variable security information is used as hidden invisible variable security information.
In some implementations of this embodiment, the variable security information includes one or a combination of the following: variable anti-counterfeiting information of characters, variable anti-counterfeiting information of numbers, variable anti-counterfeiting information of bar codes, variable anti-counterfeiting information of pictures, variable anti-counterfeiting information of two-dimensional codes and variable anti-counterfeiting information of multi-dimensional codes. The embodiment designs and draws various and easily changeable variable security information on each security paper. Therefore, the anti-counterfeiting capacity can be effectively improved, the counterfeiting difficulty of the encrypted anti-counterfeiting paper is increased, the anti-counterfeiting paper formed by the embodiment further improves the possibility of identification counterfeiting, and the use safety of the anti-counterfeiting paper can be improved.
Example 5:
the embodiment provides a method for preparing anti-counterfeiting paper, and the embodiment further comprises the following technical characteristics besides the technical characteristics of the embodiment.
In some implementations of this example, the visible variable security information is the same as the non-visible variable security information. In some implementations of this example, the visible variable security information has at least one distinction from the content of the non-visible variable security information. The visible variable anti-counterfeiting information and the invisible variable anti-counterfeiting information of the embodiment can contain the same information or patterns or can also be different.
In some implementations of this embodiment, the visible variable security information and the non-visible variable security information are disposed separately or in correspondence over the security paper. In other words, the embodiment can adopt invisible variable anti-counterfeiting information for anti-counterfeiting verification, and can also adopt the common cooperation of visible variable anti-counterfeiting information and invisible variable anti-counterfeiting information so as to further improve the anti-counterfeiting effect.
Example 6:
the embodiment provides a method for preparing anti-counterfeiting paper, and the embodiment further comprises the following technical characteristics besides the technical characteristics of the embodiment.
In some implementations of this example, the transmittance of the invisible variable security information reaches the transmittance of the white watermark. In some implementations of this example, the transmittance of the invisible variable security information is between the transmittance of the white watermark and the transmittance of the black watermark. The embodiment can adjust and change the transmittance of the invisible variable anti-counterfeiting information, so that the transmittance of the invisible variable anti-counterfeiting information is rich in change, and the anti-counterfeiting effect is improved.
Example 7:
the embodiment provides a method for preparing anti-counterfeiting paper, and the embodiment further comprises the following technical characteristics besides the technical characteristics of the embodiment.
Writing and curing variable security information in an area of a paper substrate to which a photosensitive material is applied, specifically comprising: and irradiating the area of the paper substrate, to which the photosensitive material is applied, by using an irradiation light source with the irradiation wavelength ranging from 190 nanometers to 510 nanometers, so that the variable anti-counterfeiting information is solidified.
Example 8:
the embodiment provides a preparation method of anti-counterfeiting paper, which writes and cures variable anti-counterfeiting information. The variable anti-counterfeiting information of the embodiment is specifically a sequence number watermark, which is written and cured by a numbering machine. In the embodiment, the basic number is designed to be hollowed out, and a controllable component for emitting laser or ultraviolet light is designed in the counter shaft of the numbering machine. The light writes the photosensitive material through the hollowed serial number and is solidified at the same time. When the numbers rotate, the sequence numbers are adjusted to correspondingly form watermark numbers with different sequence numbers. The variable anti-counterfeiting information of the embodiment comprises visible variable anti-counterfeiting information and invisible variable anti-counterfeiting information, and the visible variable anti-counterfeiting information is consistent with the invisible variable anti-counterfeiting information to form synchronous pairing anti-counterfeiting.
Example 9:
the embodiment provides a preparation method of anti-counterfeiting paper, and the variable anti-counterfeiting information of the embodiment is a variable bar code watermark. In this embodiment, a photosensitive material is applied on a paper substrate, so that the photosensitive material permeates into the paper substrate, a black covering layer material with a light-tight effect is utilized to online relate to a variable bar code template, the template is randomly changed, light of a laser irradiation light source is transmitted through the template such as a two-dimensional code or a bar code to cure the photosensitive material, and the photosensitive material penetrates into the paper substrate and is cured, so that a variable two-dimensional code with a certain transparency is formed.
Example 10:
the embodiment provides a preparation method of anti-counterfeiting paper, which uses electronic paper as a shading template (namely, a shading layer with a changeable shape), and the electronic paper is controlled by software to design different two-dimensional codes. The black part of the electronic paper pattern has light opacity, the light source passes through the pattern to solidify the photosensitive material, the electronic paper plays a role of a template, and the photosensitive material is solidified by penetrating into the base material to form the variable two-dimensional code with certain transparency.
Example 11:
the embodiment provides an anti-counterfeiting paper, which is prepared by adopting the preparation method of the anti-counterfeiting paper according to any embodiment of the invention. The security paper 100 includes: a first security area 110 and a second security area 120. The first security area 110 is used for accommodating visible variable security information. The second security area 120 is used to house non-visible variable security information. The anti-counterfeiting paper of the embodiment adopts the preparation method of the anti-counterfeiting paper of any embodiment of the invention, so that the anti-counterfeiting paper has all the beneficial effects of the preparation method of the anti-counterfeiting paper of any embodiment of the invention.
As shown in fig. 4, the security paper 100 of the present embodiment may be provided with a first security area 110 and a second security area 120. The visible variable security information 130 is disposed over the first security area 110 and the non-visible variable security information 140 is disposed over the second security area 120.
As shown in fig. 2 and 3, the present embodiment applies a photosensitive material 160 on top of a paper substrate 150, and draws variable security information 180 on top of the paper substrate 150 using a pattern generating device such as a barrier layer 170 in combination with an irradiation light source.
As shown in fig. 5, the present embodiment may provide only the first security area 110 and the visible variable security information 130 on the security paper 100. As shown in fig. 6, the present embodiment may further provide only the second security area 120 and the invisible variable security information 140 on the security paper 100.
In summary, the beneficial effects of the embodiment of the invention are as follows: the embodiment of the invention can draw and write the variable anti-counterfeiting information by adopting devices such as an optical scanning device, a shielding layer with a variable shape or a numbering machine with a hollowed-out number and an irradiation light source. The embodiment can design and draw various and easily-changeable variable anti-counterfeiting information on each anti-counterfeiting paper. Therefore, the anti-counterfeiting capacity can be effectively improved, the counterfeiting difficulty of the encrypted anti-counterfeiting paper is increased, the anti-counterfeiting paper formed by the embodiment further improves the possibility of identification counterfeiting, and the use safety performance of the anti-counterfeiting paper can be improved. In addition, the anti-counterfeiting paper of the embodiment realizes the first-line anti-counterfeiting which is easy to identify by the public through the visible variable anti-counterfeiting information, and can be provided with the two-line anti-counterfeiting characteristics which can be read by a machine through the invisible variable anti-counterfeiting information.
In the present invention, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A method for preparing anti-counterfeiting paper, which is characterized by comprising the following steps:
applying a photosensitive material over a paper substrate, allowing the photosensitive material to penetrate into the paper substrate;
writing and curing variable and/or non-variable security information in an area of the paper substrate where the photosensitive material is applied, wherein the variable security information comprises visible variable security information and non-visible variable security information;
cleaning the photosensitive material;
drying and flattening the paper substrate to obtain the anti-counterfeiting paper;
the writing and curing of the variable and/or non-variable security information to the area of the paper substrate to which the photosensitive material is applied specifically includes:
covering the area of the paper substrate, to which the photosensitive material is applied, with a shape-variable shielding layer to describe the variable anti-counterfeiting information, and irradiating the area of the paper substrate, to which the photosensitive material is applied, with an irradiation light source to expose and cure the variable anti-counterfeiting information; the shape-variable shielding layer comprises an electronic paper shielding layer, a light-emitting diode screen shielding layer, a liquid crystal screen shielding layer and a plasma screen shielding layer; or (b)
And irradiating the area of the paper substrate, to which the photosensitive material is applied, by adopting a numbering machine with hollowed-out numbers and an irradiation light source so as to draw the variable anti-counterfeiting information, and exposing and solidifying the variable anti-counterfeiting information.
2. The method for producing an anti-counterfeit paper sheet according to claim 1, wherein,
the variable anti-counterfeiting information is visible variable anti-counterfeiting information and invisible variable anti-counterfeiting information, and the invisible variable anti-counterfeiting information is transparent variable anti-counterfeiting information or semitransparent variable anti-counterfeiting information; and/or
The variable security information includes one or a combination of the following: variable anti-counterfeiting information of characters, variable anti-counterfeiting information of numbers, variable anti-counterfeiting information of bar codes, variable anti-counterfeiting information of pictures, variable anti-counterfeiting information of two-dimensional codes and variable anti-counterfeiting information of multi-dimensional codes.
3. The method for producing a security paper according to claim 1, wherein the variable security information includes invisible variable security information, and the writing and curing of the variable security information and/or the non-variable security information to the area of the paper substrate to which the photosensitive material is applied specifically includes:
and controlling the light spot to move in the area of the paper substrate where the photosensitive material is applied by using an optical scanning device so as to draw the variable anti-counterfeiting information, and exposing and curing the variable anti-counterfeiting information.
4. The method of claim 1, wherein the visible variable security information is written to the paper substrate by digital printing or inkjet printing or offset printing or gravure printing or screen printing or laser marking or laser engraving.
5. The method of claim 1, wherein the photosensitive material comprises at least one of the following or a combination thereof:
acrylate system compound photo-curing material, methacrylate system compound photo-curing material, acrylamide system compound photo-curing material, N-vinyl system compound photo-curing material, thiol-olefin system compound photo-curing material, thiol-alkyne system compound photo-curing material, vinyl ether system compound photo-curing material, oxetane system compound photo-curing material, epoxy system compound photo-curing material, cyclized rubber-bis-azide system compound negative photoresist, polyethylene cinnamate system compound negative photoresist.
6. The method for producing an anti-counterfeit paper according to claim 1, wherein the application of the photosensitive material on the paper substrate comprises:
roll coating the photosensitive material over the paper substrate; or (b)
Spraying the photosensitive material over the paper substrate; or (b)
Dip coating the photosensitive material over the paper substrate; or (b)
Printing the photosensitive material on the paper substrate.
7. The method for producing an anti-counterfeit paper sheet according to claim 1, wherein said washing said photosensitive material comprises:
cleaning the photosensitive material by using a solvent and a cleaning agent respectively;
wherein the solvent comprises one or a combination of the following: water, an aqueous solution containing a surfactant, an acidic aqueous solution, an alkaline aqueous solution, an organic solution, the cleaning agent comprising one or a combination of the following: pure water, absolute ethyl alcohol and acetone.
8. The method of producing a security paper according to any one of claims 1 to 7, wherein the visible variable security information and the non-visible variable security information are provided separately or in correspondence on the security paper.
9. The method for producing an anti-counterfeit paper sheet according to any one of claims 1 to 7, wherein,
the visible variable anti-counterfeiting information and the invisible variable anti-counterfeiting information have the same content; or (b)
The visible variable security information has at least one difference from the content of the non-visible variable security information.
10. The method for producing an anti-counterfeit paper sheet according to any one of claims 1 to 7, wherein,
the transmittance of the invisible variable anti-counterfeiting information reaches the transmittance of the white watermark; or (b)
The transmittance of the invisible variable security information is between the transmittance of the white watermark and the transmittance of the black watermark.
11. The method of any one of claims 1 to 7, wherein the writing and curing of variable security information to the area of the paper substrate to which the photosensitive material is applied, comprises:
and irradiating the area of the paper substrate, to which the photosensitive material is applied, by using an irradiation light source with an irradiation light wavelength range of 190-510 nanometers, so that the variable anti-counterfeiting information is solidified.
12. A security paper (100), characterized in that it is manufactured by a manufacturing method of a security paper according to any one of claims 1 to 11, said security paper (100) comprising:
-a first security area (110), the first security area (110) being for receiving the visible variable security information; and/or
-a second security area (120), the second security area (120) being for receiving the non-visible variable security information.
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| CN201725497U (en) * | 2010-04-30 | 2011-01-26 | 淄博泰宝防伪技术产品有限公司 | Fringe shielding anti-counterfeit mark |
| CN103757987B (en) * | 2014-02-14 | 2016-07-06 | 山东凯丽特种纸股份有限公司 | A kind of MULTIPLE COMPOSITE type cheque paper and manufacture method thereof |
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