CN1313676C - Composite false-proof safety thread and its production method, false-proof paper applying the safety thread - Google Patents
Composite false-proof safety thread and its production method, false-proof paper applying the safety thread Download PDFInfo
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- CN1313676C CN1313676C CNB2004100674462A CN200410067446A CN1313676C CN 1313676 C CN1313676 C CN 1313676C CN B2004100674462 A CNB2004100674462 A CN B2004100674462A CN 200410067446 A CN200410067446 A CN 200410067446A CN 1313676 C CN1313676 C CN 1313676C
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Images
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- Paper (AREA)
- Credit Cards Or The Like (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention discloses a compound anti-counterfeiting safety line, a manufacturing method thereof and anti-counterfeiting paper for applying the safety line. The single surface for binding films and amorphous alloy threads is coated with thermosol; each amorphous alloy thread is positioned and put between every two films to carry out the thermal treatment; thermosol is coated on both sides outside the film layer to form an anti-counterfeiting film after the thermosol is dried; the anti-counterfeiting film containing the amorphous alloy threads is cut to obtain the anti-counterfeiting safety line of which the width is needed. In this way, the anti-counterfeiting safety line is manufactured by the film layers and the amorphous alloy threads. The safety line is used for manufacturing bank note paper or similar paper. The present invention firstly provides and fully utilizes the specific electromagnetic performance of amorphous alloy threads, and really realizes the purpose of third-line anti-falsification of bank note paper. The compound anti-counterfeiting safety line can be seen by naked eyes for anti-falsification, and be identified for anti-falsification by a machine, also be analyzed by experts. The electromagnetic performance read by machines is stable.
Description
Technical Field
The present invention relates to paper used for making articles such as bank notes, securities and the like, and more particularly, to a composite security thread, a method of making the same, and security paper to which the security thread is applied.
Background
The amorphous alloy is developed gradually since scientists invented a rapid quenching process, and becomes a subject of special attention of material scientists due to the unique tissue structure, the efficient preparation process and the excellent material performance of the amorphous alloy. In the past four decades, various amorphous materials have been put into practical use gradually, with the continuous progress of basic research, preparation processes and development of applied products of amorphous materials. From the viewpoint of magnetic characteristics, amorphous fibers can be classified into three major types, i.e., Fe (iron) -based, Co (cobalt) -based, and Fe-Co (iron-cobalt) -based amorphous alloy fibers, which respectively exhibit large Barkhausen (Barkhausen), martensi (Matteucci), and giant magneto-impedance effects. The amorphous fiber can be used for pulse generating elements, miniature transformers, surface-mounted inductors, anti-theft labels, rotary encoders, current sensors, displacement sensors, data writing boards and the like by utilizing the effects.
In domestic literature, regarding an amorphous metal fiber magnetic card and a determination device therefor, patent application No. 01115974.X reports a determination device for an amorphous metal fiber magnetic card developed by international scientific and technological companies. The device detects the magnetic signal passed by the amorphous magnetic metal fiber, and judges the quality characteristic of the inserted magnetic card according to the detected signal.
Furthermore, US4835028(19890530) reports a modified paper product with a specific dye added to it, which is capable of protection against electrostatic copying, and a paper product (which can be considered as a security tag) for monitoring the passage of such paper through the monitoring area of the article, with an amorphous magnetostrictive thread sandwiched between the two layers of paper. US6556139 reports a magnetic label for attachment to an article, the label having glass-coated amorphous magnetic microfine fibers, which is responsive to an external magnetic field to identify the article. However, so far, no report about the application of amorphous fiber in the anti-counterfeiting of valuable paper such as bank notes and the like is found.
The safety line has been used as an effective anti-counterfeiting measure for anti-counterfeiting paper such as currency paper for a long time. Earlier applications of security threads were to position and apply a continuous wire of circular cross-section in the longitudinal direction of the paper machine, requiring a certain strength of the wire to ensure a stable application process. With the progress of science and technology and the continuous development of anti-counterfeiting technology, people are increasingly interested in combining a plurality of popular anti-counterfeiting features with machine-readable anti-counterfeiting features or anti-counterfeiting features which can be analyzed by experts, which are also called three-line anti-counterfeiting. The metal wire as a safety wire cannot meet the above requirements. A typical security thread that has been developed in the past is a metallized polymer, i.e., a layer of metal is applied to a polymeric carrier that is flat in cross-section. The patent US 561039-Security thread, a file and a method of manufacture of Security thread reports a Security thread and a method of producing such a Security thread. In this patent, it is described that the surface of a polymeric substrate is pre-treated to impart a specific pattern to the surface and then a magnetic metal is deposited thereon by means of a solution containing the magnetic metal to form a macroscopic security feature and a machine-readable magnetic security feature. Canadian patent CA2337787-Security thread reports a Security thread with a magnetic layer sandwiched between two polymer layers, one of which is a coded piezoelectric layer (e.g. PVDF). In view of the above-mentioned existing anti-counterfeiting technologies at home and abroad, it is only possible to realize two-line anti-counterfeiting, i.e., one-line anti-counterfeiting (visible to the naked eye), two-line anti-counterfeiting (specific electromagnetic characteristics can be read by machine), and it is also impossible to realize three-line anti-counterfeiting (modern instrument analysis), and even if a machine-readable magnetic two-line anti-counterfeiting technology of a magnetic substance is adopted, the machine-readable electromagnetic characteristics are relatively poor in stability.
Disclosure of Invention
The invention aims to provide a composite anti-counterfeiting safety line, a manufacturing method thereof and anti-counterfeiting paper applying the safety line aiming at the defects of the traditional anti-counterfeiting technology so as to realize three-line anti-counterfeiting of paper similar to bank notes.
In order to achieve the purpose, the invention adopts the following technical scheme:
a composite anti-counterfeiting safety line, which comprises a safety line body,
the anti-counterfeiting safety line comprises a thin film layer and amorphous alloy wires, wherein the thin film layer at least comprises two layers, and the amorphous alloy wires are positioned between the thin film layers.
The amorphous alloy wire is one of Fe-based amorphous alloy wire, Co-based amorphous alloy wire or Fe-Co-based amorphous alloy wire.
The amorphous alloy wire is amorphous and has electromagnetic property.
The surface of the amorphous alloy wire can be coated, dyed or adhered with anti-counterfeiting materials.
The thin film layer is coated, adhered or printed with a powder anti-counterfeiting material with magnetic and optical characteristics.
The film layer can be a transparent or semitransparent polymer film layer, or a polymer film layer and a laser holographic film layer, and patterns are printed on the film layer.
A method for manufacturing a composite anti-counterfeiting safety line,
the manufacturing method comprises the following steps:
coating hot melt glue on one surface of the film bonded with the amorphous alloy wire;
b, positioning and placing the amorphous alloy wires between the thin film layers, and then carrying out heat treatment to bond the amorphous alloy wires and the thin film layers together;
c, continuously coating thermosol on the two sides of the outer side of the film layer, and drying to form an anti-counterfeiting film;
and d, cutting the anti-counterfeiting film containing the amorphous alloy wires obtained in the step c to obtain the composite anti-counterfeiting safety line with the required width.
A kind of anti-counterfeit paper is disclosed,
is mainly made of paper pulp and additive,
the anti-counterfeiting paper also comprises a composite anti-counterfeiting safety line, wherein the anti-counterfeiting safety line comprises a thin film layer and amorphous alloy wires, the thin film layer at least comprises two layers, and the amorphous alloy wires are positioned between the thin film layers.
The composite anti-counterfeiting safety line is completely covered by the paper fiber deposition layer.
The anti-counterfeiting safety line is embedded into the paper in a windowing manner, and at least part of the composite anti-counterfeiting safety line is exposed out of the surface of the paper.
In the technical scheme of the invention, the anti-counterfeiting safety line is formed through certain processing steps, namely, hot melt glue is coated on one surface of the thin film bonded with the amorphous alloy wire; positioning and placing the amorphous alloy wires between the thin film layers, and then carrying out heat treatment; continuously coating thermosol on the two sides of the outer side of the film layer, and drying to form an anti-counterfeiting film; and cutting the anti-counterfeiting film containing the amorphous alloy wires to obtain the anti-counterfeiting safety line with the required width. The anti-counterfeiting safety line formed by the film layer and the amorphous alloy wires can be better applied to paper of bank notes or similar paper. In the anti-counterfeiting paper, the specific electromagnetic property of the amorphous alloy wire can be provided for the first time and fully utilized, the three-wire anti-counterfeiting purpose of the banknote paper is really realized, the anti-counterfeiting can be visually realized by naked eyes, the anti-counterfeiting can be identified by a machine, the machine can be used for analyzing the anti-counterfeiting paper finally, and the machine-readable electromagnetic property is very stable.
Drawings
Fig. 1 shows a schematic structural diagram of an embodiment of the composite anti-counterfeiting security thread of the invention.
Fig. 2 shows a schematic cross-sectional view along a-a of fig. 1.
Fig. 3 is a schematic block diagram illustrating an embodiment of a method for manufacturing a composite anti-counterfeiting security thread according to the present invention.
FIG. 4 is a schematic view showing the combination of a thin film layer and an amorphous alloy wire.
FIG. 5 is a flow chart of the method for making the anti-counterfeiting paper.
Figure 6 shows a schematic view of a security thread applied to security paper in a fully embedded manner.
Fig. 7 shows a schematic cross-sectional view of a security paper C-C with a composite security thread applied in a fully embedded manner.
Figure 8 shows a schematic view of a security thread applied to security paper in a windowed fashion.
Fig. 9 is a schematic cross-sectional view of an E-E direction of security paper with composite security threads applied in a windowing manner.
Detailed Description
The specific characteristic features of the present invention are further described by the following examples and the accompanying drawings.
Referring to fig. 1 and fig. 2,
the composite anti-counterfeiting safety line 5 comprises film layers 1 and 2 and amorphous alloy wires 3, wherein the film layers 1 and 2 at least comprise two layers, namely an upper layer and a lower layer, and the amorphous alloy wires 3 are positioned between the film layers 1 and 2.
The amorphous alloy wire 3 is amorphous and has electromagnetic properties.
Between the two layers of films, amorphous anti-fake thread coated with some anti-fake material is stuck. The film layers 1 and 2 can be both polymer film layers or a polymer film layer and a laser holographic film layer, and patterns are printed on the film layers.
The thin film layer is coated or printed with a powder anti-counterfeiting material with specific magnetism and optics.
The composite anti-counterfeiting safety line 5 can have the following structural forms:
an amorphous alloy wire is stuck between the two layers of transparent polymer films.
An amorphous alloy wire is stuck between the two layers of semitransparent polymer films.
An amorphous alloy wire is stuck between one layer of polymer film and one layer of transparent laser holographic film.
An amorphous alloy wire is stuck between one layer of polymer film and one layer of semitransparent laser holographic film.
Two or more amorphous alloy wires are adhered between the two layers of transparent polymer films.
Two or more amorphous alloy wires are stuck between the two layers of semitransparent polymer films.
Two or more amorphous alloy wires are adhered between one layer of polymer film and one layer of laser holographic film.
One of the two films is coated or printed with a powder anti-counterfeiting material with magnetic or specific optical characteristics on the surface bonded with the amorphous alloy wire before compounding.
Because of the specific electromagnetic property, the anti-counterfeiting label can be identified by a corresponding instrument, and has very high accuracy and reproducibility, and the aim of two-line anti-counterfeiting can be achieved. The amorphous wire can be made of composite material with specific component design, i.e. the amorphous alloy wire is coated or dyed by some anti-counterfeiting material, so that the three-wire anti-counterfeiting can be carried out by means of modern analytical instruments.
Because the amorphous alloy wire with the diameter of 7-50 μm is stuck between the two layers of films, the manufacture of the security thread is more special and complicated, and the increase of the manufacturing cost also makes the composite anti-counterfeiting security thread difficult to forge.
Referring to fig. 3, the method for manufacturing a composite anti-counterfeiting security thread of the present invention comprises a step of preparing a thin film, a step of preparing an amorphous alloy wire, a step of compounding the thin film, a step of coating a composite anti-counterfeiting film, and a step of slitting,
wherein,
in the process of preparing the film, a polymer film or a laser holographic film is prepared, one surface of the film, which is bonded with the amorphous alloy wire, can be coated or printed with a powder anti-counterfeiting material with magnetic or specific optical characteristics, and after a protective material is coated, hot melt adhesive is coated on one surface of the film.
In the process of preparing the amorphous alloy wire, the amorphous alloy wire is prepared by adopting a rapid solidification process, and the amorphous alloy wire is prepared by adopting a silicate material coating method or a rotating liquid spinning method, wherein the diameter of the amorphous alloy wire is between 7 and 50 mu m.
In the film compounding process, in the embodiment shown in fig. 4, the amorphous alloy wires 3 are positioned and applied between the film 1 and the film 2, and then heat treatment is carried out through a pair of hot rollers 9, so that thermosol on the film acts, and the bonding between the amorphous alloy wires 3 and the film 1 or the film 2 and between the film 1 and the film 2 is firm, and the compound anti-counterfeiting film 4 is formed.
In the coating process of the composite anti-counterfeiting film, coating thermosol on the double surfaces of the composite anti-counterfeiting film 4, and drying;
in the slitting process, the composite anti-counterfeiting film 4 coated with the thermosol and dried is cut by a slitting machine according to the required width to obtain the composite anti-counterfeiting safety line 5 with the required width.
With continued reference to figure 5, it is shown that,
after the anti-counterfeiting safety line is manufactured, the anti-counterfeiting safety line can be used for manufacturing anti-counterfeiting paper, and the method sequentially comprises a fine sizing step, a size mixing step, a papermaking step, a sizing step and a finishing and processing step.
Fine sizing: firstly, the fiber raw materials (such as cotton pulp, wood pulp, straw pulp, hemp pulp and the like) are pulped in a refiner;
slurry preparation: the refined pulp is mixed with chemical assistant, stuffing, anti-fake fiber, other assistant, etc. and stirred homogeneously. The chemical auxiliary agent is urea-formaldehyde resin, melamine formaldehyde value and other wet strength agents. The filler is selected from titanium white, kaolin, talcum powder and the like. The anti-counterfeiting fiber is one or more of anti-counterfeiting plant fiber, anti-counterfeiting animal fiber, anti-counterfeiting synthetic fiber, metal fiber and the like. And the other auxiliary agents are one or more of retention aid, filter aid, defoaming agent and the like.
A papermaking step: and (3) making the paper pulp after pulp preparation by using a paper machine, wherein in the step, the composite anti-counterfeiting safety line 5 is applied to the anti-counterfeiting paper in a fully-embedded mode or a windowing mode.
Fig. 6 shows an embodiment in which the composite security thread 5 is applied in a fully embedded form to the security paper 10, which is seen in a cross-section in the direction C-C in fig. 7, the composite security thread 5 being completely embedded in the middle of the fibre deposit 12, forming the security paper.
Fig. 8 shows an embodiment in which the composite security thread 5 is applied in a windowed fashion to the security paper 10, which is shown in cross-section E-E in fig. 9. The composite anti-counterfeiting safety line 5 can not be observed in the non-window area 7, and the amorphous alloy wires 3 in the composite anti-counterfeiting safety line 5 can be observed in the window area 8. Thus, the composite security thread embedded in the security paper is partially exposed on the surface of the paper. So that the anti-counterfeiting paper 11 applied with the composite anti-counterfeiting safety line 5 has an anti-counterfeiting function of one-line anti-counterfeiting.
Sizing: and (4) performing surface sizing on the dried paper to form the anti-counterfeiting paper.
Finishing and processing steps: and finishing the anti-counterfeiting paper after glue application to form an anti-counterfeiting paper product.
The paper product produced by the process comprises the composite anti-counterfeiting safety line, the anti-counterfeiting safety line comprises a thin film layer and amorphous alloy wires, the thin film layer at least comprises two layers, and the amorphous alloy wires are positioned between the thin film layers. Wherein the composite anti-counterfeiting safety line is completely covered by the paper fiber deposition layer. The composite anti-counterfeiting safety line can also be embedded in the paper in a windowing manner, namely, at least part of the composite anti-counterfeiting safety line is exposed on the surface of the paper.
Of course, those skilled in the art will recognize that the above-described embodiments are illustrative only, and not intended to be limiting, and that changes and modifications of the above-described embodiments are intended to be within the scope of the appended claims, as they fall within the true spirit and scope of the present invention.
Claims (10)
1. A composite anti-counterfeiting safety line, which comprises a safety line body,
the method is characterized in that:
the anti-counterfeiting safety line comprises a thin film layer and amorphous alloy wires, wherein the thin film layer at least comprises two layers, and the amorphous alloy wires are positioned between the thin film layers.
2. The composite security thread as defined in claim 1,
the method is characterized in that:
the amorphous alloy wire is one of Fe-based amorphous alloy wire, Co-based amorphous alloy wire or Fe-Co-based amorphous alloy wire.
3. The composite security thread as defined in claim 1,
the method is characterized in that:
the amorphous alloy wire is amorphous and has electromagnetic property.
4. The composite security thread as claimed in any one of claims 1 to 3,
the method is characterized in that:
the surface of the amorphous alloy wire can be coated, dyed or adhered with anti-counterfeiting materials.
5. The composite security thread as defined in claim 1,
the method is characterized in that:
the thin film layer is coated, adhered or printed with a powder anti-counterfeiting material with magnetic and optical characteristics.
6. The composite security thread as defined in claim 1,
the method is characterized in that:
the film layer is a completely transparent or semitransparent polymer film layer, or is composed of a polymer film layer and a laser holographic film layer, and patterns are printed on the film layer.
7. A method for manufacturing a composite anti-counterfeiting safety line,
it is characterized in that the preparation method is characterized in that,
the manufacturing method comprises the following steps:
coating hot melt glue on one surface of the film bonded with the amorphous alloy wire;
b, positioning and placing the amorphous alloy wires between the thin film layers, and then carrying out heat treatment to bond the amorphous alloy wires and the thin film layers together;
c, continuously coating thermosol on the two sides of the outer side of the film layer, and drying to form an anti-counterfeiting film;
and d, cutting the anti-counterfeiting film containing the amorphous alloy wires obtained in the step c to obtain the composite anti-counterfeiting safety line with the required width.
8. A kind of anti-counterfeit paper is disclosed,
is mainly made of paper pulp and additive,
the method is characterized in that:
the anti-counterfeiting paper also comprises a composite anti-counterfeiting safety line, wherein the anti-counterfeiting safety line comprises a thin film layer and amorphous alloy wires, the thin film layer at least comprises two layers, and the amorphous alloy wires are positioned between the thin film layers.
9. The security paper as claimed in claim 8,
the method is characterized in that:
the composite anti-counterfeiting safety line is completely covered by the paper fiber deposition layer.
10. The security paper as claimed in claim 8,
the method is characterized in that:
the anti-counterfeiting safety line is embedded into the paper in a windowing manner, and at least part of the composite anti-counterfeiting safety line is exposed out of the surface of the paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100674462A CN1313676C (en) | 2004-10-25 | 2004-10-25 | Composite false-proof safety thread and its production method, false-proof paper applying the safety thread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100674462A CN1313676C (en) | 2004-10-25 | 2004-10-25 | Composite false-proof safety thread and its production method, false-proof paper applying the safety thread |
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| CN1766229A CN1766229A (en) | 2006-05-03 |
| CN1313676C true CN1313676C (en) | 2007-05-02 |
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| CNB2004100674462A Active CN1313676C (en) | 2004-10-25 | 2004-10-25 | Composite false-proof safety thread and its production method, false-proof paper applying the safety thread |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100560862C (en) * | 2006-05-31 | 2009-11-18 | 中国印钞造币总公司 | Single cylinder mould machine is produced the technology of window-open type broad safety line money paper |
| CN101294361B (en) * | 2007-04-27 | 2011-11-02 | 中钞特种防伪科技有限公司 | Guard wire |
| CN101659138B (en) * | 2008-08-27 | 2012-08-08 | 中国印钞造币总公司 | Anti-counterfeiting element made of composite material, preparation method thereof and application thereof |
| CN110466248A (en) * | 2018-05-10 | 2019-11-19 | 素材的脉有限公司 | The safety of imager recording medium recognition unit |
| CN110827660A (en) * | 2018-08-10 | 2020-02-21 | 优豚信息科技（上海）有限公司 | Gold wire ultraviolet image anti-counterfeiting technology |
| CN113947174B (en) * | 2021-09-08 | 2023-09-05 | 中钞特种防伪科技有限公司 | Anti-counterfeiting element and anti-counterfeiting product using same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2227451A (en) * | 1989-01-20 | 1990-08-01 | Bank Of England The Governor A | Security thread |
| ES2113311A1 (en) * | 1996-03-18 | 1998-04-16 | Nacional Moneda Timbre | Security paper for the bulk detection of presence |
| CN1292054A (en) * | 1998-03-02 | 2001-04-18 | 韩国造币公社 | Improved process for preparation of security thread |
-
2004
- 2004-10-25 CN CNB2004100674462A patent/CN1313676C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2227451A (en) * | 1989-01-20 | 1990-08-01 | Bank Of England The Governor A | Security thread |
| ES2113311A1 (en) * | 1996-03-18 | 1998-04-16 | Nacional Moneda Timbre | Security paper for the bulk detection of presence |
| CN1292054A (en) * | 1998-03-02 | 2001-04-18 | 韩国造币公社 | Improved process for preparation of security thread |
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| Publication number | Publication date |
|---|---|
| CN1766229A (en) | 2006-05-03 |
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Assignee: KUNSHAN BANKNOTE PAPER Co.,Ltd. Assignor: CHINA BANKNOTE PRINTING AND MINTING Corp. Contract record no.: 2010990000384 Denomination of invention: Composite false-proof safety thread and its production method, false-proof paper applying the safety thread Granted publication date: 20070502 License type: Exclusive License Open date: 20060503 Record date: 20100617 |
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Address after: 100044 Beijing city Xicheng District Xizhimen Street No. 143 Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: 100044 Beijing city Xicheng District Xizhimen Street No. 143 Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |