CN110578269A - method for making anti-counterfeiting paper with watermark window and anti-counterfeiting paper with watermark window - Google Patents
method for making anti-counterfeiting paper with watermark window and anti-counterfeiting paper with watermark window Download PDFInfo
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- CN110578269A CN110578269A CN201810579567.7A CN201810579567A CN110578269A CN 110578269 A CN110578269 A CN 110578269A CN 201810579567 A CN201810579567 A CN 201810579567A CN 110578269 A CN110578269 A CN 110578269A
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- watermark
- window
- paper
- counterfeiting
- dehydrated
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
-
- 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
Abstract
the invention provides a method for manufacturing anti-counterfeiting paper with a watermark window and anti-counterfeiting paper with the watermark window, which comprises the following steps: (1) designing a convex structure on the surface net according to the figure outline corresponding to the watermark; filling the raised structure with a non-dehydrated security element to seal the top thereof; then the surface net is made into a net cage used for forming the paper sheets with windows; or the non-dehydrated anti-counterfeiting element is directly clamped between the surface net and the lining net and then is made into a cylinder mould for forming the paper sheet with the window; or directly coating an anti-counterfeiting coating which is not dehydrated on the surface net according to the figure outline corresponding to the watermark, and then manufacturing the surface net into a cylinder mould for forming the paper with the window; (2) hoisting the mesh cage onto a paper machine, and making paper to obtain a wet paper page with a window; (3) and positioning and compounding the wet paper page with the window and the wet paper page with the watermark, and then squeezing and drying to obtain the anti-counterfeiting paper with the watermark window.
Description
Technical Field
The invention relates to a method for manufacturing anti-counterfeiting paper with a watermark window and anti-counterfeiting paper with the watermark window, belonging to the technical field of paper anti-counterfeiting.
background
at present, in the field of anti-counterfeiting paper at home and abroad, the most widely applied is multi-level watermarks, and white watermarks, pixel watermarks, Sigma watermarks and the like can be matched to achieve a better anti-counterfeiting effect. Each watermark has its own advantages and disadvantages, such as: the multilevel watermark is based on the subtle change of the local fiber deposition amount of the paper, so that the light transmission is different, gray level is generated when the light is observed, and when the gray level accords with the sketch relation of an object to be expressed, the multilevel watermark is generated. Its advantages are the hierarchical relation hidden in paper industry, not easy copying in later period, and low definition stability of watermark. When the watermark is fuzzy, the identification difficulty is increased, the opportunity is created for counterfeiters, and how to improve the definition of the watermark is an endless topic.
In addition, on the paper with watermark in the market, in order to avoid the printing pattern to influence the definition and the identification of the watermark, the watermark area of the paper is blank, and the pattern is not printed in the watermark area.
Disclosure of Invention
The invention aims to provide a method for manufacturing anti-counterfeiting paper with a watermark window and anti-counterfeiting paper with the watermark window, in order to deeply improve the definition of multi-layer watermarks and enable the watermarks to achieve a brand new effect.
In order to achieve the above objects, in one aspect, the present invention provides a method for making a security paper with a watermark window, wherein the method comprises the following steps:
(1) designing a convex structure on the surface net according to the figure outline corresponding to the watermark; filling the raised structure with a non-dehydrated security element to seal the top thereof; then the surface net is made into a net cage used for forming the paper sheets with windows;
Or the non-dehydrated anti-counterfeiting element is directly clamped between the surface net and the lining net and then is made into a cylinder mould for forming the paper sheet with the window;
or directly coating an anti-counterfeiting coating which is not dehydrated on the surface net according to the figure outline corresponding to the watermark, and then manufacturing the surface net into a cylinder mould for forming the paper with the window;
(2) hoisting the mesh cage in the step (1) to a paper machine, and making paper to obtain a wet paper page with a window;
(3) and (3) positioning and compounding the wet paper page with the window in the step (2) and the wet paper page with the watermark, and then squeezing and drying to obtain the anti-counterfeiting paper with the watermark window.
In the above method, preferably, the filling of the non-dehydrated security element in the raised structure in step (1) includes filling the non-dehydrated security element in the raised structure so that the non-dehydrated security element is tightly attached to the top surface of the raised structure, or the non-dehydrated security element is not tightly attached to the edge of the top surface of the raised structure;
more preferably, when the non-dehydrated security element is not closely attached to the top edge of the raised structure, the distance between the non-dehydrated security element and the top edge of the raised structure is 0.2-1.0 mm;
still more preferably, the edge of the top surface of the convex structure comprises a plurality of triangular units with vertexes facing to the center of the top surface of the convex structure and distributed at equal intervals;
further preferably, the height from the top point to the bottom edge of the triangle is 1-10mm, the length of the bottom edge is 1-5mm, and the distance between every two triangle units is 0-5 mm.
In the above method, when the top of the raised structure in step (1) is in the same shape as and closely attached to the filled non-dehydrated security element, the window boundary of the obtained security paper with watermark window is clear, because: the raised areas have a contour that corresponds to the contour of the areas of the security element filler (as shown in fig. 6A-6B), and in this closed contour, the slurry cannot remain due to the non-dehydrating nature of the filler, thus forming an open window. When the periphery of the raised feature region does not conform closely to the filler (as shown in fig. 6C-6D), the region forms a transition between slurry non-retention and retention, and the blurring effect will appear at the edge of the window profile.
In the method for manufacturing the anti-counterfeiting paper with the watermark window, the area outline of the raised structure only refers to the outline of the top surface of the raised structure, and the cross section of the raised structure is not included.
However, whether the window boundary is clear or fuzzy (blurring state) does not influence the watermark in the window area which can be realized by the anti-counterfeiting paper with the watermark window provided by the invention, and the beneficial technical effects of high brightness, high definition and high contrast are achieved.
in the above method, step (1) preferably further includes an operation of forming fine serrations on the edge of the top end of the non-dehydrated security element before filling or before sandwiching;
more preferably, the sawtooth comprises a plurality of triangular units with vertexes towards the top center of the non-dehydrated anti-counterfeiting element and the triangular units are distributed at equal intervals;
Further preferably, the height from the top point to the bottom edge of the triangle is 1-10mm, the length of the bottom edge is 1-5mm, and the distance between every two triangle units is 0-5 mm.
In the above method, preferably, the step (1) further comprises the operation of forming fine serrations on the surface edge of the non-dehydrated anti-counterfeiting coating after the anti-counterfeiting coating without dehydration is applied;
more preferably, the saw teeth comprise a plurality of triangular units with the vertexes facing to the surface center of the non-dehydrated anti-counterfeiting coating and distributed at equal intervals;
Further preferably, the height from the top point to the bottom edge of the triangle is 1-10mm, the length of the bottom edge is 1-5mm, and the distance between every two triangle units is 0-5 mm.
In the manufacturing process of the anti-counterfeiting paper with the watermark window, when fine saw teeth are formed on the top end of the anti-counterfeiting element without dehydration and on the surface of the anti-counterfeiting coating without dehydration, the window of the anti-counterfeiting paper with the watermark window is manufactured in a virtual state. However, the window in the virtual state does not affect the watermark in the window area which can be realized by the anti-counterfeiting paper with the watermark window provided by the invention, and the beneficial technical effects of high brightness, high definition and high contrast are achieved.
The invention does not make specific requirements on the anti-counterfeiting coating in the step (1), and a person skilled in the art can select a proper non-dehydrated anti-counterfeiting coating from the existing anti-counterfeiting coatings in the field according to the field operation requirement for using the anti-counterfeiting coating in the invention as long as the aim of the invention can be realized.
in the above method, preferably, the veil is a metal net.
in the above method, preferably, the metal mesh is a copper mesh.
In the above method, preferably, the height of the raised structure in step (1) is 0.1 to 0.3mm smaller than the height of the non-dehydrated security element. The purpose is that when the surface net and the lining net are compounded, the filling effect of firm fit can be achieved through the elasticity of the anti-counterfeiting element (viscoelastic polymer material).
in the above method, preferably, the non-dehydrated security element includes a viscoelastic polymer material.
In the method, the viscoelastic polymer material has the characteristics of softness, elasticity and dehydration resistance, can seal the tops of the protrusions, further can control the protruding structure parts of the veil not to be dehydrated completely, and can be attached to the radian of the surface of a net cage.
In the above method, preferably, the viscoelastic polymer material includes polyurethane, silicone rubber, epoxy resin, or butyl rubber.
In the method, the mesh cage is formed in the step (1) by directly clamping the non-dehydrated anti-counterfeiting element between the surface mesh and the lining mesh and then manufacturing the non-dehydrated anti-counterfeiting element into the mesh cage with the windowed paper sheet, and in the subsequent production papermaking process, the non-dehydrated anti-counterfeiting element has the risk of position movement, so that the positioning error compounded with the watermark can be caused. Therefore, in the paper making process, the position of the anti-counterfeiting original without dehydration needs to be noticed so as to avoid the occurrence of positioning error compounded with the watermark.
In the method, the net cage is formed in the step (1) by directly coating the anti-counterfeiting coating which is not dehydrated on the surface net according to the figure outline corresponding to the watermark and then manufacturing the surface net into the net cage with the windowing paper sheet. In addition, the coating layer is easy to wear in the use process of the cylinder mould, and the service time of the cylinder mould is influenced.
In the method, the gram weight of the wet paper sheet with the open windows is generally 25-60g/m2the grammage of the sheet is weighted to a lesser value within this range during operation depending on the characteristics of the paper stock and the printing requirements.
in the above method, preferably, the method further comprises continuing the operation of printing the image and text on the security paper with the watermark window.
in the above method, the positioning and compositing in step (3) refers to positioning and compositing the windowing area of the wet paper sheet with windowing and the watermark area of the wet paper sheet with watermark according to the need.
in the above process, the wet sheet with a watermark used may be a wet sheet prepared by a method conventional in the art, and the grammage of the wet sheet is preferably lower than that of conventional paper, but may also be lower than that of conventional papersimilarly, in a more preferred embodiment of the invention, the wet watermarked sheet typically has a grammage of 60-95g/cm2The watermark of the anti-counterfeiting paper prepared by the method is brighter by adopting the wet paper with lower gram weight, but the invention does not make specific requirements on the watermark.
in the above method, the papermaking, pressing and drying are all conventional technical means in the field, and those skilled in the art can perform reasonable operations according to the needs of field operation.
on the other hand, the invention also provides anti-counterfeiting paper with the watermark window, wherein the watermark of the anti-counterfeiting paper is provided with the window, the outline of the window is clear or in a virtual state, the window is partially overlapped with the watermark (the window is smaller than the watermark), or the watermark is completely covered (the window is larger than the watermark), or the window is the same as the watermark, the watermark and the window are mutually overlapped, and the watermark in the window area has the characteristics of high definition and high contrast.
in the above security paper with a watermark window, the window is only a simple basic form, and is not a constituent element in the watermark pattern.
In the anti-counterfeiting paper with the watermark window, the contrast of the watermark in the windowing area is obviously higher than that of the watermark in other areas; meanwhile, the original overall effect of the watermark cannot be damaged by windowing. The anti-counterfeiting paper can be seen to be provided with an open window through light transmission, compared with other areas of the anti-counterfeiting paper, the brightness of the paper in the window is obviously higher than that of the areas outside the window, wherein the whole watermark or the local part of the watermark can be reflected by the window, and compared with other areas of the anti-counterfeiting paper, the watermark in the window also has higher brightness, the watermark is clear, and the contrast is strong.
in addition, in a specific embodiment of the present invention, the operation of image-text printing can be further performed on the security paper with the watermark window provided by the present invention, so as to obtain the security paper with the watermark window having a print on the surface.
The anti-counterfeiting paper with the watermark window is printed with pictures and texts, after the pictures and texts are printed on the anti-counterfeiting paper with the watermark window, the watermark in the window is not influenced by the covering of the pictures and texts, the watermark is still clear and visible, and the identification of people on the watermark in the window is not influenced; but the watermark outside the window can be covered by the printed image and text, and the definition is seriously damaged. After the image and text are printed on the existing anti-counterfeiting paper in the field, the image and text also have certain covering power on the general watermark, and the watermark effect is influenced.
In summary, the method for making the anti-counterfeit paper with the watermark window provided by the invention relates to the windowing watermark technology, wherein the windowing watermark opens a high-definition window on a common watermark, so that the definition and contrast of the watermark of the anti-counterfeit paper with the watermark window in the windowing area are obviously higher than those of the watermark in other areas; meanwhile, the original overall effect of the watermark cannot be damaged by windowing. The anti-counterfeiting paper can be seen to be provided with an open window through light transmission, compared with other areas of the anti-counterfeiting paper, the brightness of the paper in the window is obviously higher than that of the areas outside the window, wherein the whole watermark or the local part of the watermark can be reflected by the window, and compared with other areas of the anti-counterfeiting paper, the watermark in the window also has higher brightness, the watermark is clear, and the contrast is strong.
The window is arranged on the watermark of the anti-counterfeiting paper with the watermark window, the watermark in the window area has the characteristics of high definition and high contrast, and the anti-counterfeiting paper has high watermark identification performance and strong anti-counterfeiting performance.
Drawings
FIG. 1 is a schematic representation of a wet paper sheet with a butterfly watermark used in example 1 of the present invention;
FIG. 2 is a schematic structural diagram of an anti-counterfeit paper with a watermark window prepared in example 1 of the present invention;
FIG. 3 is a schematic view of a wet paper sheet with a rose watermark used in example 2 of the present invention;
FIG. 4 is a schematic structural diagram of an anti-counterfeit paper with a watermark window prepared in example 2 of the present invention;
FIG. 5 is a schematic structural diagram of an anti-counterfeit paper with a watermark window prepared in embodiment 3 of the present invention;
FIG. 6A is a top view of a netpen with windowed paper formed when security paper with a watermark window (with clear window outline) is prepared according to the present invention;
FIG. 6B is a cross-sectional view of a cylinder mould with windowed paper made in accordance with the present invention when preparing security paper with a watermark window (clear window outline);
FIG. 6C is a top view of a netpen with windowed paper formed when security paper with a watermark window (window outline is blurred) is prepared according to the present invention;
FIG. 6D is a cross-sectional view of a cylinder mould with windowed paper formed when security paper with a watermark window (window outline is blurred) is prepared according to the invention;
Fig. 7 is a schematic structural diagram of the security paper with a printed window and a watermark prepared in embodiment 4 of the present invention.
Detailed Description
in order to clearly understand the technical features, objects and advantages of the present invention, the following detailed description of the technical solutions of the present invention will be made with reference to the following specific examples, which should not be construed as limiting the implementable scope of the present invention.
Example 1
the embodiment provides a method for manufacturing anti-counterfeiting paper with a watermark window, wherein the method comprises the following steps:
(1) designing a convex structure on the copper net according to the figure outline corresponding to the watermark, wherein the height of the convex structure is designed to be 0.5 mm;
Filling polyurethane in the convex structure to seal the top of the convex structure, wherein the height of the filled polyurethane is 0.1-0.3mm greater than that of the convex structure;
Then the surface net is made into a net cage used for forming the paper sheets with windows; the top view and the cross-sectional view of the netpen are respectively shown in fig. 6A-6B, and as can be seen from fig. 6A-6B, the top of the convex structure is the same as and closely attached to the filled polyurethane;
(2) Hoisting the mesh cage in the step (1) to a paper machine, and making paper to obtain a wet paper page with a window;
(3) The wet paper sheet with the window in the step (2) and the wet paper sheet with the butterfly watermark (as shown in fig. 1) are positioned and compounded, and then the wet paper sheet with the butterfly watermark and the wet paper sheet with the butterfly watermark are squeezed and dried to obtain the anti-counterfeiting paper with the watermark window, the structure of which is shown in fig. 2, as can be seen from fig. 2, the watermark of the anti-counterfeiting paper is provided with the window, the window is overlapped with a part of the watermark (the window is smaller than the watermark), and the outline of the window is clear.
In the anti-counterfeiting paper with the watermark window prepared by the embodiment, the contrast of the watermark in the windowing area is obviously higher than that of the watermark in other areas; meanwhile, the original overall effect of the watermark cannot be damaged by windowing. The window can be seen through light transmission, the anti-counterfeiting paper is provided with an open window, compared with other areas of the anti-counterfeiting paper, the brightness of the paper in the window is obviously higher than that of the area outside the window, the window can map the local part of the watermark, compared with other areas of the anti-counterfeiting paper, the watermark in the window also has higher brightness, the watermark is clear, and the contrast is strong.
example 2
The embodiment provides a method for manufacturing anti-counterfeiting paper with a watermark window, wherein the method comprises the following steps:
(1) designing a convex structure on the copper net according to the figure outline corresponding to the watermark, wherein the height of the convex structure is designed to be 0.5 mm;
Filling silicon rubber in the protruding structure to seal the top of the protruding structure, wherein the height of the filled silicon rubber is 0.1-0.3mm greater than that of the protruding structure;
Then the surface net is made into a net cage used for forming the paper sheets with windows; the top view and the cross-sectional view of the netpen are respectively shown in fig. 6A-6B, and as can be seen from fig. 6A-6B, the top of the convex structure is the same as and closely attached to the filled polyurethane;
(2) hoisting the mesh cage in the step (1) to a paper machine, and making paper to obtain a wet paper page with a window;
(3) And (3) positioning and compounding the wet paper sheet with the window in the step (2) and the wet paper sheet with the rose watermark (shown in figure 3), and squeezing and drying to obtain the anti-counterfeiting paper with the watermark window, wherein the structure of the anti-counterfeiting paper is shown in figure 4, as can be seen from figure 4, the watermark of the anti-counterfeiting paper is provided with the window, the window covers the watermark completely (the window is larger than the watermark), and the outline of the window is clear.
In the anti-counterfeiting paper with the watermark window prepared by the embodiment, the contrast of the watermark in the windowing area is obviously higher than that of the watermark in other areas; meanwhile, the original overall effect of the watermark cannot be damaged by windowing. The window can be seen to be provided with an open window through light transmission, compared with other areas of the anti-counterfeiting paper, the brightness of the paper in the window is obviously higher than that of the area outside the window, all watermarks can be reflected by the window, and compared with other areas of the anti-counterfeiting paper, the watermarks in the window also have higher brightness, are clear and have strong contrast.
Example 3
the embodiment provides a method for manufacturing anti-counterfeiting paper with a watermark window, wherein the method comprises the following steps:
(1) Designing a convex structure on the copper net according to the figure outline corresponding to the watermark, wherein the height of the convex structure is designed to be 0.5 mm;
Filling silicon rubber in the protruding structure to seal the top of the protruding structure, wherein the height of the filled silicon rubber is 0.1-0.3mm greater than that of the protruding structure; then the surface net is made into a net cage used for forming the paper sheets with windows; the top view and the cross-sectional view of the netpen are respectively shown in fig. 6C-6D, and as can be seen from fig. 6C-6D, the tops of the convex structures are not tightly attached to the filler;
Wherein the distance (h) between the non-dehydrated security element (silicone rubber) and the edge of the top surface of the raised structure is 0.2-1.0mm, e.g. h is 0.6 mm;
the edge of the top surface of the convex structure comprises a plurality of triangular units with vertexes facing to the center of the top surface of the convex structure and distributed at equal intervals;
the height (H) from the vertex to the base of the triangle is 1-10mm, such as H is 5mm, the length (l) of the base is 1-5mm, such as l is 3mm, and the distance (d) between every two triangle units is 0-5mm, such as d is 2.5 mm.
(2) Hoisting the mesh cage in the step (1) to a paper machine, and making paper to obtain a wet paper page with a window;
(3) And (3) positioning and compounding the wet paper sheet with the window in the step (2) and the wet paper sheet with the rose watermark (shown in figure 3), and squeezing and drying to obtain the anti-counterfeiting paper with the watermark window, wherein the structure of the anti-counterfeiting paper is shown in figure 5, as can be seen from figure 5, the watermark of the anti-counterfeiting paper is provided with the window, the window covers the watermark completely (the window is larger than the watermark), and the outline edge of the window has a blurring effect.
in the anti-counterfeiting paper with the watermark window prepared by the embodiment, the contrast of the watermark in the windowing area is obviously higher than that of the watermark in other areas; meanwhile, the original overall effect of the watermark cannot be damaged by windowing. The window can be seen to be provided with an open window through light transmission, compared with other areas of the anti-counterfeiting paper, the brightness of the paper in the window is obviously higher than that of the area outside the window, all watermarks can be reflected by the window, and compared with other areas of the anti-counterfeiting paper, the watermarks in the window also have higher brightness, are clear and have strong contrast.
example 4
The embodiment provides an anti-counterfeiting paper with a printed window on the surface, which is obtained by continuously performing printing operation on the anti-counterfeiting paper with the printed window provided by the embodiment 2 of the invention, the structural schematic diagram of the anti-counterfeiting paper obtained in the embodiment is shown in fig. 7, and as can be seen from fig. 7, after the image and text are printed on the anti-counterfeiting paper with the printed window, the watermark in the window cannot be influenced by the covering of the image and text, the watermark is still clear and visible, and the identification of the watermark in the window by people is not influenced; but the watermark outside the window can be covered by the printed image and text, and the definition is seriously damaged.
Claims (10)
1. A method for manufacturing anti-counterfeiting paper with a watermark window is characterized by comprising the following steps:
(1) Designing a convex structure on the surface net according to the figure outline corresponding to the watermark; filling the raised structure with a non-dehydrated security element to seal the top thereof; then the surface net is made into a net cage used for forming the paper sheets with windows;
Or the non-dehydrated anti-counterfeiting element is directly clamped between the surface net and the lining net and then is made into a cylinder mould for forming the paper sheet with the window;
Or directly coating an anti-counterfeiting coating which is not dehydrated on the surface net according to the figure outline corresponding to the watermark, and then manufacturing the surface net into a cylinder mould for forming the paper with the window;
(2) Hoisting the mesh cage in the step (1) to a paper machine, and making paper to obtain a wet paper page with a window;
(3) And (3) positioning and compounding the wet paper page with the window in the step (2) and the wet paper page with the watermark, and then squeezing and drying to obtain the anti-counterfeiting paper with the watermark window.
2. the method of claim 1, wherein the filling of the raised structure with the non-dehydrated security element in step (1) comprises filling the raised structure with the non-dehydrated security element such that the non-dehydrated security element is in close contact with the top surface of the raised structure or the non-dehydrated security element is not in close contact with the edge of the top surface of the raised structure;
Preferably, when the non-dehydrated anti-counterfeiting element is not tightly attached to the edge of the top surface of the raised structure, the distance between the non-dehydrated anti-counterfeiting element and the edge of the top surface of the raised structure is 0.2-1.0 mm;
It is also preferable that the edge of the top surface of the convex structure comprises a plurality of triangular units with vertexes facing to the center of the top surface of the convex structure and distributed at equal intervals;
more preferably, the height from the top point to the bottom edge of the triangle is 1-10mm, the length of the bottom edge is 1-5mm, and the distance between every two triangle units is 0-5 mm.
3. The method according to claim 1, wherein the step (1) further comprises the operation of forming fine serrations on the top edge of the non-dehydrated security element before filling or before sandwiching;
Preferably, the saw teeth comprise a plurality of triangular units with vertexes facing to the top center of the non-dehydrated anti-counterfeiting element and distributed at equal intervals;
more preferably, the height from the top point to the bottom edge of the triangle is 1-10mm, the length of the bottom edge is 1-5mm, and the distance between every two triangle units is 0-5 mm.
4. The method of claim 1, wherein the step (1) further comprises the operation of forming fine serrations on the surface edge of the non-dehydrated security coating after the non-dehydrated security coating is applied;
preferably, the saw teeth comprise a plurality of triangular units with the vertexes facing to the center of the surface of the non-dehydrated anti-counterfeiting coating and distributed at equal intervals;
More preferably, the height from the top point to the bottom edge of the triangle is 1-10mm, the length of the bottom edge is 1-5mm, and the distance between every two triangle units is 0-5 mm.
5. The method of claim 1, wherein the veil is a metal mesh;
Preferably, the metal mesh is a copper mesh.
6. the method according to claim 1, wherein the height of the raised structures in step (1) is 0.1-0.3mm less than the height of the non-dehydrated security element.
7. The method of claim 1 or 6, wherein the non-dehydrated security element comprises a viscoelastic polymeric material;
preferably, the viscoelastic polymer material comprises polyurethane, silicone rubber, epoxy resin or butyl rubber.
8. The method of claim 1 wherein the wet sheet having fenestrations has a grammage of 25 to 60g/m2；
preferably, the first and second electrodes are formed of a metal,the gram weight of the wet paper sheet with the watermark is 60-95g/cm2。
9. The method according to any one of claims 1 to 8, further comprising continuing the printing operation on the security paper with the watermark window.
10. The anti-counterfeiting paper with the watermark window is characterized in that the watermark of the anti-counterfeiting paper is provided with the window, the outline of the window is clear or in a virtual state, the window is partially overlapped with the watermark, or the watermark is completely covered, or the window and the watermark are the same in size, the watermark and the window are mutually overlapped, and the watermark in the window area has the characteristics of high definition and high contrast.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810579567.7A CN110578269B (en) | 2018-06-07 | 2018-06-07 | Method for making anti-counterfeiting paper with watermark window and anti-counterfeiting paper with watermark window |
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| CN201810579567.7A CN110578269B (en) | 2018-06-07 | 2018-06-07 | Method for making anti-counterfeiting paper with watermark window and anti-counterfeiting paper with watermark window |
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| CN110578269B CN110578269B (en) | 2021-12-07 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010018113A1 (en) * | 2000-02-01 | 2001-08-30 | Stephane Mallol | Paper including a multitone-effect watermark, and a wire for manufacturing the paper |
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| CN103015248A (en) * | 2013-01-10 | 2013-04-03 | 保定钞票纸业有限公司 | Anti-counterfeiting paper comprising watermark combination with bright window and method for manufacturing anti-counterfeiting paper |
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| US20010018113A1 (en) * | 2000-02-01 | 2001-08-30 | Stephane Mallol | Paper including a multitone-effect watermark, and a wire for manufacturing the paper |
| CN1583416A (en) * | 2004-06-11 | 2005-02-23 | 中国印钞造币总公司 | Method for making overprint water marks |
| US20110042023A1 (en) * | 2008-03-19 | 2011-02-24 | Malcolm Paul Baker | Making Sheets |
| WO2011141858A1 (en) * | 2010-05-12 | 2011-11-17 | Arjowiggins Security | Security document comprising a watermark or pseudo-watermark, a combined image and a visualization screen, and associated processes |
| CN102400420A (en) * | 2010-09-16 | 2012-04-04 | 保定钞票纸业有限公司 | Anti-counterfeiting paper with wide multilayer white watermark and manufacturing method thereof |
| CN102268841A (en) * | 2011-07-22 | 2011-12-07 | 保定钞票纸业有限公司 | Anti-counterfeit paper with single-tier gray scale watermark and manufacturing method of anti-counterfeit paper |
| CN103015248A (en) * | 2013-01-10 | 2013-04-03 | 保定钞票纸业有限公司 | Anti-counterfeiting paper comprising watermark combination with bright window and method for manufacturing anti-counterfeiting paper |
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| CN110578269B (en) | 2021-12-07 |
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Address after: No.2166, Shengxing West Road, Baoding City, Hebei Province 071071 Patentee after: BAODING BANKNOTE PAPER Co.,Ltd. Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: No.2166, Shengxing West Road, Baoding City, Hebei Province 071071 Patentee before: BAODING BANKNOTE PAPER Co.,Ltd. Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |