CN111851149A - Thermal sensitive paper with high anti-counterfeiting performance and preparation method thereof - Google Patents
Thermal sensitive paper with high anti-counterfeiting performance and preparation method thereof Download PDFInfo
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- CN111851149A CN111851149A CN202010455843.6A CN202010455843A CN111851149A CN 111851149 A CN111851149 A CN 111851149A CN 202010455843 A CN202010455843 A CN 202010455843A CN 111851149 A CN111851149 A CN 111851149A
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- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
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- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
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- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
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Abstract
The invention provides thermal paper with high anti-counterfeiting performance and a preparation method thereof, the substrate layer, the thermal color development layer, the first spacing layer, the anti-counterfeiting information layer, the second spacing layer and the protective layer are sequentially stacked from bottom to top to form the thermal paper with a multilayer composite structure, the anti-counterfeiting information layer is integrated into the thermal paper integrally, the anti-counterfeiting information layer is used as a sub-layer of the thermal paper to play an anti-counterfeiting role and can be firmly combined into the thermal paper, so that the anti-counterfeiting information in the thermal paper can be continuously kept in the using and storing processes of the thermal paper, and the anti-counterfeiting performance and the safety of the thermal paper are improved.
Description
Technical Field
The invention relates to the technical field of thermal paper and preparation thereof, in particular to thermal paper with high anti-counterfeiting performance and a preparation method thereof.
Background
The thermal paper is also called thermal surface recording paper or thermal copy paper, which is essentially a processed paper, and a layer of thermal paint is coated on a base paper, and then the thermal paint is subjected to color development reaction under the action of thermal printing, so that corresponding characters or patterns are formed. The thermal paper in the prior art is simply coated with a layer of thermal paint on base paper, the thermal paper of the type can only be used in common thermal printing occasions, the thermal paper of the type does not have anti-counterfeiting characteristics, and cannot be used in products such as tickets or receipts, and corresponding anti-counterfeiting labels are usually additionally stuck in the thermal paper in order to meet anti-counterfeiting requirements, but the method not only increases the production cost of the thermal paper, but also causes the anti-counterfeiting labels to fall off to cause the thermal paper to lose the anti-counterfeiting effect.
Disclosure of Invention
The invention provides thermal paper with high anti-counterfeiting performance and a preparation method thereof, aiming at the defects in the prior art, the substrate layer, the thermal color development layer, the first spacing layer, the anti-counterfeiting information layer, the second spacing layer and the protective layer are sequentially stacked from bottom to top to form the thermal paper with a multi-layer composite structure, the anti-counterfeiting information layer is integrated into the thermal paper integrally, and the anti-counterfeiting information layer is taken as a sublayer of the thermal paper to play an anti-counterfeiting role and can be stably combined into the thermal paper, so that the anti-counterfeiting information in the thermal paper can be continuously kept in the using and storing processes of the thermal paper, and the anti-counterfeiting performance and the safety of the thermal paper are improved.
The invention provides a thermal sensitive paper with high anti-counterfeiting performance, which is characterized in that:
the thermal paper with high anti-counterfeiting performance comprises a substrate layer, a thermal color development layer, a first spacing layer, an anti-counterfeiting information layer, a second spacing layer and a protective layer which are sequentially stacked from bottom to top; wherein,
the substrate layer is a fiber raw paper layer with a multi-layer composite structure;
the heat-sensitive color development layer comprises a first flexible base material fiber layer and a heat-sensitive color change material layer coated on the first flexible base material fiber layer;
The first spacing layer is a compact spacing layer formed by a polyester material;
the anti-counterfeiting information layer comprises a carrier layer and anti-counterfeiting ink pictures and texts or anti-counterfeiting microstructures arranged on the carrier layer;
the second spacing layer is a compact spacing layer formed by polyester materials;
the protective layer is adhered to the upper surface of the second spacing layer through a pressure-sensitive adhesive so as to package and protect the whole thermosensitive paper with high anti-counterfeiting property;
further, in the substrate layer, the fiber base paper layer of the multilayer composite structure is formed by mutually overlapping a plurality of fiber base paper laminating units; wherein,
each of the fiber base paper lamination units comprises a first fiber base paper film with a first thickness and a second fiber base paper film with a second thickness;
the second fibrous raw paper film is disposed on the first fibrous raw paper film, and the first thickness is greater than the second thickness;
further, in the heat-sensitive color development layer, the first flexible substrate fiber layer is a silicone oil paper fiber layer with the mass of 15g-50 g;
the thermosensitive color-changing material corresponding to the thermosensitive color-changing material layer is prepared by mixing an organic solvent, a stabilizer and thermosensitive color-changing particles according to the weight ratio of 10-30: 0.5-1: 3-8, and the particle diameter of the thermosensitive discoloring particles is 100-650 μm;
Further, in the anti-counterfeiting information layer,
when the anti-counterfeiting ink image-text is arranged on the carrier layer, the carrier layer is formed by oleophylic resin, and the anti-counterfeiting ink image-text is holographic anti-counterfeiting color ink image-text or holographic anti-counterfeiting black-and-white ink image-text;
when the anti-counterfeiting microstructure is arranged on the carrier layer, the carrier layer is formed by photoresist resin, and the anti-counterfeiting microstructure is an anti-counterfeiting grating microstructure or an anti-counterfeiting lens array microstructure, wherein the anti-counterfeiting grating microstructure is a one-dimensional anti-counterfeiting grating microstructure or a two-dimensional anti-counterfeiting grating microstructure;
or,
the polyester materials corresponding to the first spacing layer and the second spacing layer are polyester materials with the glass transition temperature not lower than 150 ℃;
or,
the thickness of the first spacing layer and the second spacing layer is 20-60 mu m;
or,
the protective layer comprises a transparent resin film and a scratch-resistant coating film arranged on the transparent resin base film; wherein,
the thickness of the transparent resin base film is smaller than that of the scratch-resistant coating film;
or,
the pressure-sensitive adhesive is polyacrylic acid pressure-sensitive adhesive.
The invention also provides a preparation method of the thermal paper with high anti-counterfeiting property, which is characterized by comprising the following steps:
Step S1, a substrate layer manufacturing procedure, wherein the substrate layer manufacturing procedure is used for laminating and pressing a plurality of fiber raw paper films to form a fiber raw paper layer with a multi-layer composite structure, so that the substrate layer is manufactured;
step S2, a thermosensitive color-developing layer manufacturing procedure, wherein the thermosensitive display layer manufacturing procedure is used for coating the first flexible substrate fiber layer to form a thermosensitive color-developing material layer so as to manufacture a thermosensitive color-developing layer;
step S3, a first spacing layer manufacturing procedure, wherein the first spacing layer manufacturing procedure is used for solidifying a polyester material to form a corresponding compact spacing layer so as to manufacture a first spacing layer;
step S4, an anti-counterfeiting information layer manufacturing procedure, wherein the anti-counterfeiting information layer manufacturing procedure is used for arranging anti-counterfeiting ink pictures and texts or anti-counterfeiting microstructures on a carrier layer so as to manufacture an anti-counterfeiting information layer;
step S5, a second spacer layer making process for curing the polyester resin to form a corresponding dense spacer layer, thereby making a second spacer layer;
step S6, a protective layer manufacturing step of manufacturing a protective layer;
step S7, a stacking and combining step of stacking the substrate layer, the heat-sensitive color development layer, the first spacer layer, the anti-counterfeiting information layer, the second spacer layer, and the protective layer from bottom to top to form the heat-sensitive paper with high anti-counterfeiting property;
Further, in the step S1, the substrate layer forming step may specifically include,
step S101, arranging a second fiber base paper film with a second thickness on a first fiber base paper film with a first thickness to form a fiber base paper laminating unit, wherein the first thickness is larger than the second thickness;
step S102, mutually overlapping a plurality of fiber base paper laminating units to form the substrate layer;
or,
in step S2, the process for forming a thermosensitive color-developing layer specifically includes,
step S201, adopting a silicone oil paper fiber layer with the mass of 15g-50g as the first flexible base material fiber layer;
step S202, mixing the organic solvent, the stabilizer and the thermosensitive color-changing particles according to the weight ratio of 10-30: 0.5-1: 3-8, wherein the particle size of the thermosensitive discoloring particles is 100-650 μm;
step S203, coating the thermosensitive color-changing material on the first flexible base material fiber layer to form a thermosensitive color-developing layer;
further, in step S4, the process of manufacturing the anti-counterfeit information layer specifically includes,
step S401A, making the carrier layer by using ink-oleophilic resin;
Step S402A, using holographic anti-counterfeiting color ink image-text or holographic anti-counterfeiting black-and-white ink image-text as the anti-counterfeiting ink image-text, and arranging the anti-counterfeiting ink image-text on the carrier layer, thereby manufacturing the anti-counterfeiting information layer;
or,
in step S4, the process of manufacturing the anti-counterfeit information layer specifically includes,
step S401B, the carrier layer is made of photoresist resin;
step S402B, adopting an anti-counterfeiting grating microstructure or an anti-counterfeiting lens array microstructure as the anti-counterfeiting microstructure, and arranging the anti-counterfeiting microstructure on the carrier layer to manufacture the anti-counterfeiting information layer;
further, in the step S4, the carrier layer is provided with the anti-counterfeit microstructure, so that the anti-counterfeit information layer is specifically made by performing one-dimensional linear expansion on the anti-counterfeit grating microstructure or the anti-counterfeit lens microstructure to generate a two-dimensional array microstructure, so as to serve as the anti-counterfeit microstructure, and the specific implementation process is as follows,
step S401C, diffraction simulation expansion is carried out on the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure through the following formula (1), so as to obtain basic information about the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure
In the above formula (1), pi is a circumferential ratio, e is a natural constant, exp is an exponential function with the natural constant e as a base, λ is a wavelength of light corresponding to the diffraction simulation, k is a loss of light, I is a number of grating microstructures or lens microstructures, and I (x, y) is a projection corresponding to the diffraction simulation expansionThe values of the input of the shadow-light information,
for the Fourier transform expansion processing of the projection optical information input value, P (x, y) is the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure;
step S402C, according to the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure obtained in the step S401C, and through the following formula (2), one-dimensional linear expansion processing is carried out, so that a corresponding one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure is determined
In the formula (2), j is the number of one-dimensional linear expansion, z is the projection distance of the projection optical information, a is the plane size of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, b is the plane area value corresponding to the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, h (a, b) is the diffraction transmittance function of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, and O (a, b) is the finally determined one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure;
Step S403C, performing corresponding two-dimensional convergence processing according to the one-dimensional anti-counterfeit grating microstructure or the one-dimensional anti-counterfeit lens microstructure determined in the step S402C and the following formula (3), and determining whether to generate the two-dimensional array microstructure according to a result Q of the two-dimensional convergence processing;
in the formula (3), the expansion frequency corresponding to the two-dimensional convergence processing is a two-dimensional structure abscissa value corresponding to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure when the expansion frequency is i, a two-dimensional structure ordinate value corresponding to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure when the expansion frequency is i, and a two-dimensional array microstructure corresponding to the two-dimensional convergence processing, and when the Q value is not 0, the two-dimensional array microstructure is represented to be truly present, and the two-dimensional array microstructure is generated;
further, in the step S6, the protective layer forming step includes,
arranging a scratch-resistant coating film on the transparent setting base film to prepare a protective layer;
or,
in step S7, the lamination and assembly step specifically includes,
step S701, laminating the substrate layer, the heat-sensitive color development layer, the first spacing layer, the anti-counterfeiting information layer and the second spacing layer in sequence from bottom to top;
Step S702, adhering the protective layer on the upper surface of the second spacing layer through pressure-sensitive adhesive to form the thermosensitive paper with high anti-counterfeiting performance.
The invention also provides another preparation method of the thermal paper with high anti-counterfeiting property, which is characterized by comprising the following steps:
t1, laminating and pressing a plurality of fiber raw paper films to form a fiber raw paper layer with a multi-layer composite structure, thereby forming a substrate layer;
step T2, coating the first flexible substrate fiber layer to form a thermosensitive color-changing material layer, thereby forming a thermosensitive color-developing layer;
step T3, solidifying the polyester material to form a corresponding compact spacing layer, thereby forming a first spacing layer;
step T4, providing an anti-counterfeiting ink image or anti-counterfeiting microstructure on the carrier layer to form an anti-counterfeiting information layer, which is specifically,
step T401, diffraction simulation expansion is carried out on the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure through the following formula (1), so that basic information about the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure is obtained
In the above formula (1), pi is a circumferential ratio, e is a natural constant, exp is an exponential function with the natural constant e as a base, λ is a wavelength of light corresponding to the diffraction simulation, k is a loss of light, I is the number of grating microstructures or lens microstructures, and I (x, y) is a projection light information input value corresponding to the diffraction simulation expansion, 
For the Fourier transform expansion processing of the projection optical information input value, P (x, y) is the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure;
step T402, according to the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure obtained in the step T401, and through the following formula (2), performing one-dimensional linear expansion processing to determine a corresponding one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure
In the formula (2), j is the number of one-dimensional linear expansion, z is the projection distance of the projection optical information, a is the plane size of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, b is the plane area value corresponding to the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, h (a, b) is the diffraction transmittance function of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, and O (a, b) is the finally determined one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure;
step T403, according to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure determined in the step T402, performing corresponding two-dimensional convergence processing according to the following formula (3), and according to a result value Q of the two-dimensional convergence processing, determining whether to generate the two-dimensional array microstructure;
In the formula (3), the expansion frequency corresponding to the two-dimensional convergence processing is a two-dimensional structure abscissa value corresponding to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure when the expansion frequency is i, a two-dimensional structure ordinate value corresponding to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure when the expansion frequency is i, and a two-dimensional array microstructure corresponding to the two-dimensional convergence processing, and when the Q value is not 0, the two-dimensional array microstructure is represented to be truly present, and the two-dimensional array microstructure is generated;
a step T5 for curing the polyester resin to form a corresponding dense spacer layer, thereby forming a second spacer layer;
step T6, forming a protective layer;
and T7, pressing the substrate layer, the heat-sensitive color development layer, the first spacing layer, the anti-counterfeiting information layer, the second spacing layer and the protective layer from bottom to top to form the heat-sensitive paper with high anti-counterfeiting performance.
Compared with the prior art, the thermosensitive paper with high anti-counterfeiting performance and the preparation method thereof are characterized in that the substrate layer, the thermosensitive color development layer, the first spacing layer, the anti-counterfeiting information layer, the second spacing layer and the protective layer are sequentially stacked from bottom to top to form the thermosensitive paper with a multi-layer composite structure, the anti-counterfeiting information layer is integrated into the thermosensitive paper integrally, the anti-counterfeiting information layer serves as a sub-layer of the thermosensitive paper and can be firmly combined into the thermosensitive paper, and therefore the anti-counterfeiting information of the thermosensitive paper can be continuously kept in the using and storing processes, and the anti-counterfeiting performance and the safety of the thermosensitive paper are improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the thermal paper with high anti-counterfeiting performance provided by the invention.
Fig. 2 is a schematic flow chart of a method for preparing the thermal sensitive paper with high anti-counterfeiting performance provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a schematic structural diagram of a thermal sensitive paper with high anti-counterfeiting performance and a preparation method thereof according to an embodiment of the present invention is shown. The thermal sensitive paper with high anti-counterfeiting performance comprises a substrate layer, a thermal sensitive color development layer, a first spacing layer, an anti-counterfeiting information layer, a second spacing layer and a protective layer which are sequentially stacked from bottom to top; wherein,
the substrate layer is a fiber raw paper layer with a multi-layer composite structure;
the heat-sensitive color development layer comprises a first flexible base material fiber layer and a heat-sensitive color change material layer coated on the first flexible base material fiber layer;
the first spacing layer is a compact spacing layer formed by polyester materials;
the anti-counterfeiting information layer comprises a carrier layer and anti-counterfeiting ink pictures and texts or anti-counterfeiting microstructures arranged on the carrier layer;
the second spacing layer is a compact spacing layer formed by polyester materials;
the protective layer is adhered to the upper surface of the second spacing layer through a pressure-sensitive adhesive so as to package and protect the whole thermosensitive paper with high anti-counterfeiting performance.
This thermal paper with high anti-fake nature is through in the laminated structure with anti-fake information layer gomphosis to wherein to this integration that realizes anti-fake information layer and substrate layer and temperature sensing color development layer, can guarantee this thermal paper with high anti-fake nature all to contain corresponding anti-fake information in whole temperature sensing color development region like this, because this anti-fake information layer is laminated together mutually with other functional layers of thermal paper, can avoid this anti-fake information layer to take place to drop or the condition that anti-fake information loses like this effectively, thereby guarantee this thermal paper anti-fake effect's that has high anti-fake nature persistence.
Preferably, in the substrate layer, the fiber base paper layer of the multilayer composite structure is formed by stacking a plurality of fiber base paper stacking units on each other; wherein,
each of the fiber base paper lamination units comprises a first fiber base paper film with a first thickness and a second fiber base paper film with a second thickness;
the second cellophane film is disposed on the first cellophane film, and the first thickness is greater than the second thickness.
This substrate layer is in the same place through the mutual superpose of a plurality of fiber body paper lamination unit, can avoid adopting single fiber body paper to form the substrate layer like this and lead to the condition that the substrate layer takes place the warpage, in addition because adopt the first fiber body paper film and the overlap of second fiber body paper film that have different thickness to form in each fiber body paper lamination unit, can furthest improve the toughness and the tear resistance of substrate layer like this under the prerequisite that reduces fiber body paper lamination unit thickness.
Preferably, in the heat-sensitive color development layer, the first flexible substrate fiber layer is a silicone oil paper fiber layer having a mass of 15g to 50 g;
the thermosensitive color-changing material corresponding to the thermosensitive color-changing material layer is prepared by mixing an organic solvent, a stabilizer and thermosensitive color-changing particles according to the weight ratio of 10-30: 0.5-1: 3-8, and the particle diameter of the thermosensitive color-changing particles is 100-650 μm.
The thermosensitive color development layer adopts a silicone oil paper fiber layer with the mass of 15g-50g as the first flexible base material fiber layer, so that the flexibility and the impermeability of the first flexible base material fiber layer can be improved; further, the organic solvent, the stabilizer and the thermochromic particles are mixed in a ratio of 10 to 30: 0.5-1: 3-8, the thermosensitive color-developing stability and durability of the thermosensitive color-developing layer can be effectively improved.
Preferably, in the security information layer,
when the anti-counterfeiting ink image-text is arranged on the carrier layer, the carrier layer is formed by oleophylic resin, and the anti-counterfeiting ink image-text is holographic anti-counterfeiting color ink image-text or holographic anti-counterfeiting black-white ink image-text;
when the anti-counterfeiting microstructure is arranged on the carrier layer, the carrier layer is formed by photoresist resin, and the anti-counterfeiting microstructure is an anti-counterfeiting grating microstructure or an anti-counterfeiting lens array microstructure, wherein the anti-counterfeiting grating microstructure is a one-dimensional anti-counterfeiting grating microstructure or a two-dimensional anti-counterfeiting grating microstructure.
The anti-counterfeiting information layer can set the type and the anti-counterfeiting information presentation form of the carrier layer according to different application occasions and application requirements of the thermal paper, wherein the anti-counterfeiting color ink image-text or the holographic anti-counterfeiting black-and-white ink image-text is adopted as the anti-counterfeiting ink image-text to effectively reduce the manufacturing cost and the manufacturing difficulty of the anti-counterfeiting information, and the anti-counterfeiting grating microstructure or the anti-counterfeiting lens array microstructure is adopted as the anti-counterfeiting microstructure to improve the anti-counterfeiting safety and the anti-counterfeiting efficiency of the anti-counterfeiting information, so that the anti-counterfeiting information layer can be suitable.
Preferably, the polyester material corresponding to the first spacing layer and the second spacing layer is a polyester material with a glass transition temperature not lower than 150 ℃.
The first spacing layer and the second spacing layer are made of polyester materials with the glass transition temperature not lower than 150 ℃, so that the thermal stability of the first spacing layer and the second spacing layer can be effectively improved, and the anti-counterfeiting information layer clamped between the first spacing layer and the second spacing layer can be effectively isolated thermally, so that the situation that the anti-counterfeiting information layer is interfered by external heat to cause the degradation of the anti-counterfeiting information is avoided.
Preferably, the first spacer layer and the second spacer layer each have a thickness of 20 μm to 60 μm.
The thickness of the first spacer layer and the second spacer layer is set to be 20 μm to 60 μm, so that the thickness of the first spacer layer and the second spacer layer can be minimized, the thermal stability can be optimized, and the mechanical strength can be optimized.
Preferably, the protective layer includes a transparent resin film and a scratch resistant coating film disposed on the transparent resin base film; wherein,
the thickness of the transparent resin-based film is smaller than that of the scratch-resistant coating film.
The scratch-resistant coating layer is arranged in the protective layer, so that the surface scratch resistance of the thermosensitive paper with high anti-counterfeiting performance can be effectively guaranteed, and the phenomenon that the thermosensitive paper with high anti-counterfeiting performance generates surface scratches in the processes of transportation, storage and use to influence the thermosensitive printing effect is avoided.
Preferably, the pressure sensitive adhesive is a polyacrylic pressure sensitive adhesive.
Referring to fig. 2, a schematic flow chart of a method for preparing thermal sensitive paper with high anti-counterfeiting performance according to an embodiment of the present invention is shown. The preparation method of the thermal sensitive paper with high anti-counterfeiting property comprises the following steps:
step S1, a substrate layer manufacturing procedure, wherein the substrate layer manufacturing procedure is used for laminating and pressing a plurality of fiber raw paper films to form a fiber raw paper layer with a multi-layer composite structure, so that the substrate layer is manufactured;
step S2, a thermosensitive color-developing layer producing step of coating the first flexible substrate fiber layer with a thermosensitive color-developing material layer to produce a thermosensitive color-developing layer;
step S3, a first spacing layer manufacturing process for curing the polyester material to form a corresponding dense spacing layer, thereby manufacturing a first spacing layer;
step S4, an anti-counterfeiting information layer manufacturing procedure, wherein the anti-counterfeiting information layer manufacturing procedure is used for arranging anti-counterfeiting ink pictures and texts or anti-counterfeiting microstructures on the carrier layer so as to manufacture the anti-counterfeiting information layer;
step S5, a second spacer layer making process for curing the polyester resin to form a corresponding dense spacer layer, thereby making a second spacer layer;
Step S6, a protective layer manufacturing step of manufacturing a protective layer;
step S7, a laminating and combining step, in which the substrate layer, the heat-sensitive color development layer, the first spacer layer, the anti-counterfeiting information layer, the second spacer layer and the protective layer are laminated from bottom to top, so as to combine and form the heat-sensitive paper with high anti-counterfeiting performance.
Preferably, step S101, a second fiber base paper film with a second thickness is disposed on a first fiber base paper film with a first thickness, so as to form a fiber base paper lamination unit, wherein the first thickness is greater than the second thickness;
step S102, a plurality of the fiber base paper laminating units are stacked on each other, so as to form the backing layer.
Preferably, in step S2, the process for manufacturing the thermosensitive color-developing layer specifically includes,
step S201, adopting a silicone oil paper fiber layer with the mass of 15g-50g as the first flexible base material fiber layer;
step S202, mixing the organic solvent, the stabilizer and the thermosensitive color-changing particles according to the weight ratio of 10-30: 0.5-1: 3-8, wherein the particle diameter of the thermosensitive discoloring particle is 100-650 μm;
step S203, coating the thermosensitive color-changing material on the first flexible substrate fiber layer to form the thermosensitive color-developing layer.
Preferably, in the step S4, the process for manufacturing the anti-counterfeiting information layer specifically includes,
step S401A, making the carrier layer by using ink-oleophilic resin;
and step S402A, adopting holographic anti-counterfeiting color ink pictures and texts or holographic anti-counterfeiting black-and-white ink pictures and texts as the anti-counterfeiting ink pictures and texts, and arranging the anti-counterfeiting ink pictures and texts on the carrier layer to manufacture the anti-counterfeiting information layer.
Preferably, in the step S4, the process for manufacturing the anti-counterfeiting information layer specifically includes,
step S401B, using photoresist resin to make the carrier layer;
step S402B, a security grating microstructure or a security lens array microstructure is used as the security microstructure, and the security microstructure is disposed on the carrier layer, thereby forming the security information layer.
Preferably, in step S4, the anti-counterfeit microstructure is disposed on the carrier layer, so that the anti-counterfeit information layer is specifically formed by one-dimensional linear expansion of the anti-counterfeit grating microstructure or the anti-counterfeit lens microstructure, so as to generate a two-dimensional array microstructure, which is used as the anti-counterfeit microstructure, and the specific implementation process is as follows,
step S401C, performing diffraction simulation expansion on the forgery-prevention grating microstructure or the forgery-prevention lens microstructure by the following formula (1), so as to obtain basic information about the forgery-prevention grating microstructure or the forgery-prevention lens microstructure
In the above formula (1), pi is a circumferential ratio, e is a natural constant, exp is an exponential function with the natural constant e as a base, λ is a wavelength of light corresponding to the diffraction simulation, k is a loss of light, I is the number of grating microstructures or lens microstructures, and I (x, y) is a projection light information input value corresponding to the diffraction simulation expansion,
for Fourier transform of the input value of the projection light informationPerforming transformation and expansion processing, wherein P (x, y) is the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure;
step S402C, according to the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure obtained in the step S401C, and through the following formula (2), performing one-dimensional linear expansion processing to determine the corresponding one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure
In the formula (2), j is the number of one-dimensional linear expansion, z is the projection distance of the projection optical information, a is the plane size of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, b is the corresponding plane area value of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, h (a, b) is the diffraction transmittance function of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, and O (a, b) is the finally determined one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure;
Step S403C, performing corresponding two-dimensional convergence processing according to the one-dimensional anti-counterfeit grating microstructure or the one-dimensional anti-counterfeit lens microstructure determined in step S402C and the following formula (3), and determining whether to generate the two-dimensional array microstructure according to a result Q of the two-dimensional convergence processing;
in the formula (3), the expansion frequency corresponding to the two-dimensional convergence processing is a two-dimensional structure abscissa value corresponding to the one-dimensional anti-counterfeit grating microstructure or the one-dimensional anti-counterfeit lens microstructure when the expansion frequency is i, a two-dimensional structure ordinate value corresponding to the one-dimensional anti-counterfeit grating microstructure or the one-dimensional anti-counterfeit lens microstructure when the expansion frequency is i, and a two-dimensional array microstructure corresponding to the two-dimensional convergence processing, and when the Q value is not 0, the two-dimensional array microstructure is represented to be truly present, and the two-dimensional array microstructure is generated.
The mode of one-dimensional linear expansion processing on the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure can integrate the anti-counterfeiting information layer into the thermal sensitive paper integrally and stably, so that the thermal sensitive paper can continuously retain corresponding anti-counterfeiting information in the using and storing processes, and the anti-counterfeiting performance, the safety and the use durability of the thermal sensitive paper are improved.
Preferably, in the step S6, the protective layer manufacturing process includes,
the scratch-resistant coating film is provided on the transparent base setting film to thereby produce a protective layer.
Preferably, in the step S7, the lamination and assembly process specifically includes,
step S701, laminating the substrate layer, the heat-sensitive color development layer, the first spacing layer, the anti-counterfeiting information layer and the second spacing layer in sequence from bottom to top;
step S702, adhering the protective layer on the upper surface of the second spacer layer through a pressure sensitive adhesive to form the thermosensitive paper with high anti-counterfeiting property.
The embodiment of the invention also provides a preparation method of another thermal sensitive paper with high anti-counterfeiting performance, which comprises the following steps:
t1, laminating and pressing a plurality of fiber raw paper films to form a fiber raw paper layer with a multi-layer composite structure, thereby forming a substrate layer;
step T2, coating the first flexible substrate fiber layer to form a thermosensitive color-changing material layer, thereby forming a thermosensitive color-developing layer;
step T3, solidifying the polyester material to form a corresponding compact spacing layer, thereby forming a first spacing layer;
step T4, providing an anti-counterfeiting ink image or anti-counterfeiting microstructure on the carrier layer to form an anti-counterfeiting information layer, which is specifically,
Step T401, the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure is subjected to diffraction simulation expansion through the following formula (1), so that basic information about the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure is obtained
In the above formula (1), pi is a circumferential ratio, e is a natural constant, exp is an exponential function with the natural constant e as a base, λ is a wavelength of light corresponding to the diffraction simulation, k is a loss of light, I is the number of grating microstructures or lens microstructures, and I (x, y) is a projection light information input value corresponding to the diffraction simulation expansion,
for Fourier transform expansion processing of the projection optical information input value, P (x, y) is the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure;
step T402, according to the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure obtained in the step T401, and through the following formula (2), performing one-dimensional linear expansion processing to determine a corresponding one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure
In the formula (2), j is the number of one-dimensional linear expansion, z is the projection distance of the projection optical information, a is the plane size of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, b is the corresponding plane area value of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, h (a, b) is the diffraction transmittance function of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, and O (a, b) is the finally determined one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure;
Step T403, according to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure determined in the step T402, performing corresponding two-dimensional convergence processing according to the following formula (3), and according to a result value Q of the two-dimensional convergence processing, determining whether to generate the two-dimensional array microstructure;
in the formula (3), the expansion frequency corresponding to the two-dimensional convergence processing is a two-dimensional structure abscissa value corresponding to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure when the expansion frequency is i, a two-dimensional structure ordinate value corresponding to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure when the expansion frequency is i, and a two-dimensional array microstructure corresponding to the two-dimensional convergence processing, and when the Q value is not 0, the two-dimensional array microstructure is represented to be truly present, and the two-dimensional array microstructure is generated;
a step T5 for curing the polyester resin to form a corresponding dense spacer layer, thereby forming a second spacer layer;
step T6, forming a protective layer;
and T7, pressing the substrate layer, the heat-sensitive color development layer, the first spacing layer, the anti-counterfeiting information layer, the second spacing layer and the protective layer from bottom to top to form the heat-sensitive paper with high anti-counterfeiting performance.
The preparation method of the other thermal sensitive paper with high anti-counterfeiting property is different from the preparation method of the thermal sensitive paper with high anti-counterfeiting property in that the substrate layer, the thermal sensitive color development layer, the first spacing layer, the anti-counterfeiting information layer, the second spacing layer and the protective layer are pressed in a pressing mode, so that the situation that the thermal sensitive paper is separated in the using process is avoided, and the combination stability of the layers is improved.
According to the content of the embodiment, the substrate layer, the heat-sensitive color development layer, the first spacing layer, the anti-counterfeiting information layer, the second spacing layer and the protective layer are sequentially stacked from bottom to top to form the heat-sensitive paper with the multi-layer composite structure, the anti-counterfeiting information layer is integrated into the heat-sensitive paper integrally, the anti-counterfeiting information layer serves as a sub-layer of the heat-sensitive paper to play an anti-counterfeiting role and can be firmly combined into the heat-sensitive paper, so that the anti-counterfeiting information in the heat-sensitive paper can be continuously kept in the using and storing processes of the heat-sensitive paper, and the anti-counterfeiting performance and the safety of the heat-sensitive paper are improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The heat-sensitive paper with high anti-counterfeiting performance is characterized in that:
the thermal paper with high anti-counterfeiting performance comprises a substrate layer, a thermal color development layer, a first spacing layer, an anti-counterfeiting information layer, a second spacing layer and a protective layer which are sequentially stacked from bottom to top; wherein,
the substrate layer is a fiber raw paper layer with a multi-layer composite structure;
the heat-sensitive color development layer comprises a first flexible base material fiber layer and a heat-sensitive color change material layer coated on the first flexible base material fiber layer;
the first spacing layer is a compact spacing layer formed by a polyester material;
the anti-counterfeiting information layer comprises a carrier layer and anti-counterfeiting ink pictures and texts or anti-counterfeiting microstructures arranged on the carrier layer;
the second spacing layer is a compact spacing layer formed by polyester materials;
the protective layer is adhered to the upper surface of the second spacing layer through a pressure-sensitive adhesive so as to package and protect the whole thermosensitive paper with high anti-counterfeiting performance.
2. The thermal paper having high forgery prevention according to claim 1, wherein:
in the substrate layer, the fiber base paper layer of the multilayer composite structure is formed by mutually overlapping a plurality of fiber base paper laminating units; wherein,
Each of the fiber base paper lamination units comprises a first fiber base paper film with a first thickness and a second fiber base paper film with a second thickness;
the second cellophane film is disposed on the first cellophane film, and the first thickness is greater than the second thickness.
3. The thermal paper having high forgery prevention according to claim 1, wherein:
in the heat-sensitive color development layer, the first flexible substrate fiber layer is a silicone oil paper fiber layer with the mass of 15g-50 g;
the thermosensitive color-changing material corresponding to the thermosensitive color-changing material layer is prepared by mixing an organic solvent, a stabilizer and thermosensitive color-changing particles according to the weight ratio of 10-30: 0.5-1: 3 to 8 by weight ratio, and the particle diameter of the thermochromic particles is 100 to 650 μm.
4. The thermal paper having high forgery prevention according to claim 1, wherein:
in the anti-counterfeiting information layer, the anti-counterfeiting information layer is provided with a first anti-counterfeiting mark and a second anti-counterfeiting mark,
when the anti-counterfeiting ink image-text is arranged on the carrier layer, the carrier layer is formed by oleophylic resin, and the anti-counterfeiting ink image-text is holographic anti-counterfeiting color ink image-text or holographic anti-counterfeiting black-and-white ink image-text;
when the anti-counterfeiting microstructure is arranged on the carrier layer, the carrier layer is formed by photoresist resin, and the anti-counterfeiting microstructure is an anti-counterfeiting grating microstructure or an anti-counterfeiting lens array microstructure, wherein the anti-counterfeiting grating microstructure is a one-dimensional anti-counterfeiting grating microstructure or a two-dimensional anti-counterfeiting grating microstructure;
Or,
the polyester materials corresponding to the first spacing layer and the second spacing layer are polyester materials with the glass transition temperature not lower than 150 ℃;
or,
the thickness of the first spacing layer and the second spacing layer is 20-60 mu m;
or,
the protective layer comprises a transparent resin film and a scratch-resistant coating film arranged on the transparent resin base film; wherein,
the thickness of the transparent resin base film is smaller than that of the scratch-resistant coating film;
or,
the pressure-sensitive adhesive is polyacrylic acid pressure-sensitive adhesive.
5. The preparation method of the thermal sensitive paper with high anti-counterfeiting property is characterized by comprising the following steps:
step S1, a substrate layer manufacturing procedure, wherein the substrate layer manufacturing procedure is used for laminating and pressing a plurality of fiber raw paper films to form a fiber raw paper layer with a multi-layer composite structure, so that the substrate layer is manufactured;
step S2, a thermosensitive color-developing layer manufacturing procedure, wherein the thermosensitive display layer manufacturing procedure is used for coating the first flexible substrate fiber layer to form a thermosensitive color-developing material layer so as to manufacture a thermosensitive color-developing layer;
step S3, a first spacing layer manufacturing procedure, wherein the first spacing layer manufacturing procedure is used for solidifying a polyester material to form a corresponding compact spacing layer so as to manufacture a first spacing layer;
Step S4, an anti-counterfeiting information layer manufacturing procedure, wherein the anti-counterfeiting information layer manufacturing procedure is used for arranging anti-counterfeiting ink pictures and texts or anti-counterfeiting microstructures on a carrier layer so as to manufacture an anti-counterfeiting information layer;
step S5, a second spacer layer making process for curing the polyester resin to form a corresponding dense spacer layer, thereby making a second spacer layer;
step S6, a protective layer manufacturing step of manufacturing a protective layer;
step S7, a stacking and combining process, in which the substrate layer, the heat-sensitive color development layer, the first spacing layer, the anti-counterfeiting information layer, the second spacing layer, and the protective layer are stacked from bottom to top, so as to form the heat-sensitive paper with high anti-counterfeiting property.
6. The method for producing a thermal paper having high forgery prevention according to claim 5, wherein:
in step S1, the substrate layer forming step specifically includes,
step S101, arranging a second fiber base paper film with a second thickness on a first fiber base paper film with a first thickness to form a fiber base paper laminating unit, wherein the first thickness is larger than the second thickness;
Step S102, mutually overlapping a plurality of fiber base paper laminating units to form the substrate layer;
or,
in step S2, the process for forming a thermosensitive color-developing layer specifically includes,
step S201, adopting a silicone oil paper fiber layer with the mass of 15g-50g as the first flexible base material fiber layer;
step S202, mixing the organic solvent, the stabilizer and the thermosensitive color-changing particles according to the weight ratio of 10-30: 0.5-1: 3-8, wherein the particle size of the thermosensitive discoloring particles is 100-650 μm;
step S203, coating the thermosensitive color-changing material on the first flexible substrate fiber layer so as to form the thermosensitive color-developing layer.
7. The method for producing a thermal paper having high forgery prevention according to claim 5, wherein:
in step S4, the process of manufacturing the anti-counterfeit information layer specifically includes,
step S401A, making the carrier layer by using ink-oleophilic resin;
step S402A, using holographic anti-counterfeiting color ink image-text or holographic anti-counterfeiting black-and-white ink image-text as the anti-counterfeiting ink image-text, and arranging the anti-counterfeiting ink image-text on the carrier layer, thereby manufacturing the anti-counterfeiting information layer;
Or,
in step S4, the process of manufacturing the anti-counterfeit information layer specifically includes,
step S401B, the carrier layer is made of photoresist resin;
step S402B, an anti-counterfeiting grating microstructure or an anti-counterfeiting lens array microstructure is adopted as the anti-counterfeiting microstructure, and the anti-counterfeiting microstructure is arranged on the carrier layer, so that the anti-counterfeiting information layer is manufactured.
8. The method for producing a thermal paper having high forgery prevention according to claim 5, wherein:
in the step S4, the carrier layer is provided with the anti-counterfeit microstructure, so that the anti-counterfeit information layer is specifically formed by one-dimensional linear expansion of the anti-counterfeit grating microstructure or the anti-counterfeit lens microstructure to generate a two-dimensional array microstructure, which is used as the anti-counterfeit microstructure, and the specific implementation process is as follows,
step S401C, diffraction simulation expansion is carried out on the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure through the following formula (1), so as to obtain basic information about the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure
In the above formula (1), pi is a circumferential ratio, e is a natural constant, exp is an exponential function with the natural constant e as a base, λ is a wavelength of light corresponding to the diffraction simulation, k is a loss of light, I is the number of grating microstructures or lens microstructures, and I (x, y) is a projection light information input value corresponding to the diffraction simulation expansion, 
For the Fourier transform expansion processing of the projection optical information input value, P (x, y) is the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure;
step S402C, according to the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure obtained in the step S401C, and through the following formula (2), one-dimensional linear expansion processing is carried out, so that a corresponding one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure is determined
In the formula (2), j is the number of one-dimensional linear expansion, z is the projection distance of the projection optical information, a is the plane size of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, b is the plane area value corresponding to the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, h (a, b) is the diffraction transmittance function of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, and O (a, b) is the finally determined one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure;
step S403C, performing corresponding two-dimensional convergence processing according to the one-dimensional anti-counterfeit grating microstructure or the one-dimensional anti-counterfeit lens microstructure determined in the step S402C and the following formula (3), and determining whether to generate the two-dimensional array microstructure according to a result Q of the two-dimensional convergence processing;
In the formula (3), the expansion frequency corresponding to the two-dimensional convergence processing is a two-dimensional structure abscissa value corresponding to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure when the expansion frequency is i, a two-dimensional structure ordinate value corresponding to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure when the expansion frequency is i, and a two-dimensional array microstructure corresponding to the two-dimensional convergence processing, and when the Q value is not 0, the two-dimensional array microstructure is represented to be truly present, and the two-dimensional array microstructure is generated.
9. The method for producing a thermal paper having high forgery prevention according to claim 5, wherein:
in step S6, the protective layer forming step includes,
arranging a scratch-resistant coating film on the transparent setting base film to prepare a protective layer;
or,
in step S7, the lamination and assembly step specifically includes,
step S701, laminating the substrate layer, the heat-sensitive color development layer, the first spacing layer, the anti-counterfeiting information layer and the second spacing layer in sequence from bottom to top;
step S702, adhering the protective layer on the upper surface of the second spacing layer through pressure-sensitive adhesive to form the thermosensitive paper with high anti-counterfeiting performance.
10. The method for preparing the thermal paper with high forgery prevention according to claim 1, wherein the method for preparing the thermal paper with high forgery prevention comprises the steps of:
t1, laminating and pressing a plurality of fiber raw paper films to form a fiber raw paper layer with a multi-layer composite structure, thereby forming a substrate layer;
step T2, coating the first flexible substrate fiber layer to form a thermosensitive color-changing material layer, thereby forming a thermosensitive color-developing layer;
step T3, solidifying the polyester material to form a corresponding compact spacing layer, thereby forming a first spacing layer;
step T4, providing an anti-counterfeiting ink image or anti-counterfeiting microstructure on the carrier layer to form an anti-counterfeiting information layer, which is specifically,
step T401, diffraction simulation expansion is carried out on the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure through the following formula (1), so that basic information about the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure is obtained
In the above formula (1), pi is a circumferential ratio, e is a natural constant, exp is an exponential function with the natural constant e as a base, λ is a wavelength of light corresponding to the diffraction simulation, and k is a wavelength of lightI is the number of grating microstructures or lens microstructures, I (x, y) is the projection light information input value corresponding to the diffraction simulation expansion, 
For the Fourier transform expansion processing of the projection optical information input value, P (x, y) is the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure;
step T402, according to the basic information of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure obtained in the step T401, and through the following formula (2), performing one-dimensional linear expansion processing to determine a corresponding one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure
In the formula (2), j is the number of one-dimensional linear expansion, z is the projection distance of the projection optical information, a is the plane size of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, b is the plane area value corresponding to the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, h (a, b) is the diffraction transmittance function of the anti-counterfeiting grating microstructure or the anti-counterfeiting lens microstructure, and O (a, b) is the finally determined one-dimensional anti-counterfeiting grating microstructure or one-dimensional anti-counterfeiting lens microstructure;
step T403, according to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure determined in the step T402, performing corresponding two-dimensional convergence processing according to the following formula (3), and according to a result value Q of the two-dimensional convergence processing, determining whether to generate the two-dimensional array microstructure;
In the formula (3), the expansion frequency corresponding to the two-dimensional convergence processing is a two-dimensional structure abscissa value corresponding to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure when the expansion frequency is i, a two-dimensional structure ordinate value corresponding to the one-dimensional anti-counterfeiting grating microstructure or the one-dimensional anti-counterfeiting lens microstructure when the expansion frequency is i, and a two-dimensional array microstructure corresponding to the two-dimensional convergence processing, and when the Q value is not 0, the two-dimensional array microstructure is represented to be truly present, and the two-dimensional array microstructure is generated;
a step T5 for curing the polyester resin to form a corresponding dense spacer layer, thereby forming a second spacer layer;
step T6, forming a protective layer;
and T7, pressing the substrate layer, the heat-sensitive color development layer, the first spacing layer, the anti-counterfeiting information layer, the second spacing layer and the protective layer from bottom to top to form the heat-sensitive paper with high anti-counterfeiting performance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010455843.6A CN111851149A (en) | 2020-05-26 | 2020-05-26 | Thermal sensitive paper with high anti-counterfeiting performance and preparation method thereof |
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| CN202010455843.6A CN111851149A (en) | 2020-05-26 | 2020-05-26 | Thermal sensitive paper with high anti-counterfeiting performance and preparation method thereof |
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| CN111851149A true CN111851149A (en) | 2020-10-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113837341A (en) * | 2021-09-01 | 2021-12-24 | 中钞印制技术研究院有限公司 | Anti-counterfeiting element, preparation method and detection method thereof and anti-counterfeiting article |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113837341A (en) * | 2021-09-01 | 2021-12-24 | 中钞印制技术研究院有限公司 | Anti-counterfeiting element, preparation method and detection method thereof and anti-counterfeiting article |
| CN113837341B (en) * | 2021-09-01 | 2024-01-23 | 中钞印制技术研究院有限公司 | Anti-counterfeiting element, preparation method thereof, detection method and anti-counterfeiting article |
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