CN102704315B - Fiber anti-counterfeit element anti-counterfeit paper forming and making with pulp method and paper making with pulp production line - Google Patents
Fiber anti-counterfeit element anti-counterfeit paper forming and making with pulp method and paper making with pulp production line Download PDFInfo
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- CN102704315B CN102704315B CN201210204644.3A CN201210204644A CN102704315B CN 102704315 B CN102704315 B CN 102704315B CN 201210204644 A CN201210204644 A CN 201210204644A CN 102704315 B CN102704315 B CN 102704315B
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- 239000000835 fiber Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004806 packaging method and process Methods 0.000 claims abstract description 8
- 238000001035 drying Methods 0.000 claims abstract description 6
- 239000002002 slurry Substances 0.000 claims description 27
- 238000007493 shaping process Methods 0.000 claims description 25
- 239000010410 layer Substances 0.000 claims description 24
- 239000002344 surface layer Substances 0.000 claims description 20
- 230000018044 dehydration Effects 0.000 claims description 18
- 238000006297 dehydration reaction Methods 0.000 claims description 18
- 238000009955 starching Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 13
- 238000004513 sizing Methods 0.000 claims description 8
- 238000004537 pulping Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 10
- 230000035945 sensitivity Effects 0.000 abstract description 7
- 238000004026 adhesive bonding Methods 0.000 abstract 1
- 238000005498 polishing Methods 0.000 abstract 1
- 239000000123 paper Substances 0.000 description 89
- 238000009740 moulding (composite fabrication) Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 10
- 238000007639 printing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 239000011087 paperboard Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000011111 cardboard Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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Abstract
The invention discloses a fiber anti-counterfeit element anti-counterfeit paper forming and making with pulp method and a paper making with pulp production line. The method includes the following steps: anti-counterfeit paper forming, dewatering, drying, surface gluing, press polishing, batching, and slitting-sorting-packaging. The method and production line are improved from single cylinder mould forming, and adopt the three cylinder mould forming to solve the technical problems that two cylinder moulds or more than four cylinder moulds can't simultaneously solve the problems that the non-plant fiber is easy to slip off due to artificial reason and the paper is overthick, are inconvenient for observing the anti-counterfeit element with naked eyes, and influence the detection sensitivity of the electronic detecting equipment. The fiber anti-counterfeit element anti-counterfeit paper forming and making with pulp method and the paper making with pulp production line realize multiple anti-counterfeit element combinations, and improve the anti-counterfeit difficulty and the gram weight range of the anti-counterfeit paper, so as to sufficiently satisfy the special anti-counterfeit requirements of different clients.
Description
Technical field
The present invention relates to many security element cheque paper technology, especially with string and non-plant fibre as the cheque paper of security element and manufacture paper with pulp production line and the shaping process of manufacturing paper with pulp of this cheque paper.
Background technology
Instantly; commodity economic times; for the brand uniqueness of protection famous-brand and high-quality goods (commodity); prevent and stop counterfeit cheap product to the impact of famous-brand and high-quality goods; available protecting manufacturing enterprise and consumers' rights and interests; papermaking enterprise exploitation anti-counterfeiting technology difficulty is large, and antiforge function diversity, the cheque paper product that counterfeit cost is high is very necessary.At present, cheque paper production field is shaped to master with single cylinder mould (individual layer).
Find in long-term putting into practice in production process, single cylinder mould is shaping exists many deficiencies.As: (1) single net forming manufacture paper with pulp safety line cheque paper time, easily " show-through ", thus impact printing and product percent of pass, " show-through " refers to from the back end of paper and shows out safety line safety line, and particularly the cheque paper of light basis weight is particularly evident.(2) single net forming safety line line width dimensions that safety line cheque paper uses of manufacturing paper with pulp is limited, and be generally 1.5-2.0mm, unfavorable safety line carrying more information, the visuality of safety line beared information is limited, thus reduces false proof degree; Simultaneously as safety line feature sizes time shaping for single net papermaking is relaxed, not only there is " show-through ", also can wiredly be combined loosely with paper, off-line, quick-fried line possible.The false proof forming technique of single net check colors fibre, color dot security element material holder exhibition there is obstacle, because vegetalitas colored fibre should be used could to be combined with papermaking string for the look fine general that single net is false proof, otherwise not easily combine, exist simultaneously cheque paper look fine manufacturing paper with pulp, in aft-loaded airfoil, the process such as printing anti-false colour fibre come off or printing quality risk may.(4) the false proof shaping paper technology of single net is unfavorable for that realizing cheque paper divides positive and negative to implement anti-fraud functional object.(5) the false proof shaping paper technology of single net is unfavorable for that realizing cheque paper divides surface layer, bottom or laminboard layer to utilize chromatograph difference to implement anti-fraud functional object.(6) the false proof shaping paper technology weight per unit length (every square of grammes per square metre) of single net can only at 70-150g/m
2between produce the supply of material, therefore make the scope of application of cheque paper be limited.
In order to overcome the phenomenon of above-mentioned anti-fake safety line ' show-through ', China Patent No. be 200920066602.1 utility model patent disclose a kind of Multifunctional anti-counterfeiting round screen paper machine, this technology is exactly by adopting two and above cylinder mould to solve the technical problem of back side of paper safety line ' show-through ' to improve anti-counterfeiting performance, and this kind of technology is mainly for this kind of security element design of safety line.If security element is string or non-plant fibre silk, point, sheet, then in use because anti-false fiber or sheet are attached to paper surface, is therefore easy to artificial origin and has caused string to come off from paper, thus lost false proof meaning.
China Patent No. is that the patent of invention of 200810203807.X discloses a kind of compound watermark anti-counterfeiting paper and manufacture method thereof, this patented technology is exactly the pulping method that have employed many cylinder moulds, and its object mainly improves antifalse effect by the stereovision increasing watermark compound.This technology mainly for watermark anti-counterfeiting element anti-forge paper and design, be not particularly suitable for other security element.During as adopted string or non-plant fibre silk, point, sheet as security element, when paper blocked up (referring to the anti-forge paper that more than employing four cylinder mould is produced), as adopted naked-eye observation security element, then not easily differentiate, and weak effect; During as coordinated electron detection device to detect, also can due to paper blocked up and impact detect sensitivity.
In sum, all do not provide in prior art how to solve string or non-plant fibre silk, point, sheet easily come off as during security element; Antifalse effect difference is not easily differentiated during naked-eye observation, when adopting non-plant fibre silk, point, sheet cooperation electron detection device, the problem that detection sensitivity is low; Do not provide and solve any imagination of problems or design yet.
Summary of the invention
The object of the invention is to overcome safety line easy " show-through " in existing cheque paper production process, false proof degree is low; Paper grammes per square metre narrow range thus make range of application and field limited; Overcome non-plant fibre silk, point, sheet security element easily come off; When live width is on the low side, little, the deficiency that identifies security element weak effect of safety line beared information amount, provides the shaping pulping method of a kind of fibre false-proof element anti-fake paper three cylinder mould and production line thereof.
The technical scheme that the present invention is adopted to achieve these goals is: the shaping pulping method of a kind of fibre false-proof element anti-fake paper, it comprises the steps, cheque paper is shaping, dehydration, dry, top sizing, press polish, batch, cut whole choosing packaging piece, it is characterized in that described cheque paper forming step adopts three cylinder mould starchings, particularly:
Slurries are flowed uniformly to by the pulp distributor on the first net groove and have on the bottom cylinder mould of drainage mesh, then dewater under the effect of taking off paper rod by the starching of bottom cylinder mould, and transfer is to sandwich layer cylinder mould;
The starching of sandwich layer cylinder mould, by have string or non-plant fibre silk, point, sheet security element the pulp distributor of slurries on the second net groove flow uniformly on sandwich layer cylinder mould, then dewater under the effect of taking off paper rod, and transfer is to surface layer cylinder mould;
Slurries are flowed uniformly to by the slurry device on the 3rd net groove and have on the surface layer cylinder mould of drainage mesh by the starching of surface layer cylinder mould, then dewater under the effect of taking off paper rod, take off paper; Be sent to vacuum dehydration roller by ring-like gauze of taking off, begin to take shape the anti-forge paper that mass dryness fraction reaches more than 20%.
In the present invention, more effective technical scheme is that described surface layer cylinder mould has watermark net.
Present invention also offers a kind of production line being exclusively used in above-mentioned cheque paper pulping method, it comprises wet end, press section, front baking cadre, surface-sizing station, post-drying portion, calecder section, reeling end, cuts packaging piece portion of the whole portion of choosing;
It is characterized in that described wet end comprises approach system with slurry and vacuum dehydration roller further, and vacuum dehydration roller is positioned at approach system rear end with slurry; And approach system with slurry has three starching cylinder moulds, specifically:
It is comprise the first net groove, the second net groove and the 3rd net groove that stream with slurry send, wherein the second net slot is in the first net groove rear end, 3rd net slot is in the second net groove rear end, bottom cylinder mould is furnished with in first net groove, be furnished with in second net groove for the shaping sandwich layer cylinder mould of string or non-plant fibre silk, point, sheet, in the 3rd net groove, be furnished with surface layer cylinder mould.
The shaping production line of manufacturing paper with pulp of fibre false-proof element anti-fake paper described in the present invention, its technical scheme be more preferably is that described each cylinder mould upper end is all furnished with dehydration and takes off paper rod, and is provided with pulp distributor in each net groove.
Present invention also offers a kind of fibre false-proof element anti-fake paper, this cheque paper adopts said method to make and cheque paper containing string or non-plant fibre silk, point, sheet security element.
The present invention improves on the basis of single net forming, selected three cylinder moulds are shaping solve simultaneously two cylinder moulds and four cylinder moulds with upper non-plant fibre silk, point, sheet easily because artificial origin cause the phenomenon that comes off and paper blocked up, be not easy to the technical problem estimated security element and affect electron detection device detection sensitivity.Realize the combination of multiple (watermark, safety line, chromatogram, look fibre, color dot, color chips, chromatograph etc.) security element, improve false proof difficulty and the paper grammes per square metre scope of cheque paper, fully to meet for the purpose of the specific false proof requirement of different user.Security element in the present invention is positioned at paper intermediate layer, and therefore the positive and negative surface smoothness of paper is high and attractive in appearance.Meanwhile, the major advantage that the present invention adopts three net formings also to exist is: one, and core stratum reticulare can be multiple bottom veil layer, effectively solve single net manufacture paper with pulp safety line cheque paper time easily " show-through ", the quality problems of impact printing; Its two cores stratum reticulare can be multiple bottom veil layer, the single net of effective solution manufacture paper with pulp safety line cheque paper time the safety line line width dimensions that uses limited, generally can be 1.5-12.0mm, be conducive to safety line carrying more information like this, guarantee that the visuality of safety line beared information increases; " show-through ", line are combined loosely with paper, off-line, quick-fried line problem do not existed yet, ensured the printing quality of cheque paper; They are three years old, core stratum reticulare then can add all security element that can carry aberration, chromatogram, the equation of light, spectrum, shape difference such as non-plant fibre silk, point, sheet under the cooperation of face bottom, realize antiforge function, and coordinate electron detection device, realize the object of computer identification anti-counterfeiting information, because sandwich layer security element tow sides only cover one deck page, therefore thickness is thin and even, thus improves the sensitivity of detection of electrons; They are four years old, plant look fibre, color dot security element point face, core, bottom can be realized, require that given layer configures according to user, realize that plant look is fine, color dot security element at cheque paper just or the false proof object of reverse side, also save look fibre, color dot anti-fake material consumption (only false proof at visible surface) when producing high quantitative false proof Paper or cardboard simultaneously; They are five years old, chromatograph difference security element point face, core, bottom can be realized, require that given layer configures according to user, realize chromatograph security element in the false proof object of false proof paper, core, bottom, also saving the false proof colorant consumption of chromatograph when producing high quantitative false proof Paper or cardboard simultaneously, while cost-saving, alleviating colorant water pollutions; Its six, paper grammes per square metre can be realized at 50-300g/m
2between produce the supply of material, the disposable production of product becomes anti-fake paper board by cheque paper, and without the need to compound, user face is wider, is conducive to environmental protection and cost control.
Accompanying drawing explanation
Fig. 1 is production line block diagram of the present invention
Fig. 2 is the structural representation of wet end in production line
In figure: 1-wet end, 2-approach system with slurry, 201-bottom cylinder mould, 201-sandwich layer cylinder mould, 203-surface layer cylinder mould, 204-first net groove, 205-second net groove, 206-the 3rd net groove, 3-vacuum dehydration roller, 4-press section, 5-front baking cadre, 6-surface-sizing station, 7-post-drying portion, 8-calecder section, 9-reeling end, 10-cuts whole choosing packaging piece portion, 11-is ring-like takes off gauze, and 12-wite roll, 13-takes off paper bowl.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further:
As shown in Figure 1, 2: Fig. 1 is the shaping production line block diagram of manufacturing paper with pulp of fibre false-proof element anti-fake paper three cylinder mould, and Fig. 2 is the structural representation of wet end in production line.This production line primarily of wet end 1, press section 4, front baking cadre 5, surface-sizing station 6, post-drying portion 7, calecder section 8, reeling end 9, cut a few major part composition in packaging piece portion 10 etc. of the whole portion of choosing.Improvements of the present invention are just to improve wet end 1, in wet end 1, mainly adopt three cylinder moulds shaping.Particularly this wet end 1 comprises approach system 2 with slurry and vacuum dehydration roller 3, and vacuum dehydration roller 3 is positioned at approach system 2 rear end with slurry; And approach system 2 with slurry has three starching cylinder moulds, particularly:
First net groove 204, second net groove 205 and the 3rd net groove 206 are set in approach system 2 with slurry, wherein the second net groove 205 is positioned at the first net groove 204 rear end, 3rd net groove 206 is positioned at the second net groove 205 rear end, bottom cylinder mould 201 is configured in the first net groove 204, a sandwich layer cylinder mould 202 for shaping string or non-plant fibre silk or string point or string sheet is configured in the second net groove 205, in the 3rd net groove 206, configure a surface layer cylinder mould 203, each net groove bottom is provided with a stock inlet.
The step of manufacturing paper with pulp that the present invention carries out cheque paper according to above-mentioned production line is: first carry out cheque paper shaping, then carry out successively dewatering, dry, top sizing, press polish, batch, cut whole choosing packaging piece and finally form finished product.Improvement of the present invention is mainly to adopt three cylinder mould starchings in cheque paper forming part, first in bottom cylinder mould 201 starching during concrete operations, being flowed uniformly to by the pulp distributor on the first net groove 204 by slurries has on the bottom cylinder mould 201 of drainage mesh, under the effect of taking off paper rod, then completes dehydration, take off paper and shift to sandwich layer cylinder mould 202; Then the starching of sandwich layer cylinder mould is carried out, by have string or non-plant fibre silk, point, sheet security element the pulp distributor of slurries on the second net groove 205 flow uniformly on sandwich layer cylinder mould 202, then dewater under the effect of taking off paper rod, take off paper and transfer to surface layer cylinder mould 203; When 203 starching of surface layer cylinder mould, slurries are flowed uniformly to by the slurry device on the 3rd net groove 206 and has on the surface layer cylinder mould of drainage mesh, then dewater under the effect of taking off paper rod, take off paper; Be sent to vacuum dehydration roller by ring-like gauze of taking off, begin to take shape the anti-forge paper that mass dryness fraction reaches more than 20%, carry out the subsequent step such as press dewatering, oven dry afterwards successively and form finished product.
Detailed process is: system (standby) slurry system layer carrys out slurries and enters net groove pulp distributor by stock inlet, slurry liquid all flows to through pulp distributor to be had on three standard round net forming cylinder moulds of drainage mesh (wherein surface layer may have watermark net), along with the continuous circumgyration of rotary screen cage, swim in the paper pulp in net groove inner flow passage or security element is filtered at shaping mesh, take off dehydration forming under the booster action of paper bowl 13 through natural gravity dehydration or in extruding predrainage, after three standard round net forming cylinder moulds need independence shaping according to antiforge function, gauze 11 and wite roll 12 is taken off again through ring-like, by bottom rotary screen cage to sandwich layer rotary screen cage again to surface layer rotary screen cage, successively completing ply of paper takes off attached and superimposed shaping, after dewatering by vacuum dehydration roller 3, the l Water Paper page of first one-step forming with take off gauze and be separated, take off gauze and continue circulation, and wet web dryness reaches more than 20%, first tool intensity, now l Water Paper page is drawn to mechanical expression roller dewater unit and dewaters further, l Water Paper page is pulled and delivers to front baking cadre afterwards, surface-sizing station, post-drying portion, calecder section, reeling end, cut whole choosing packaging piece portion, complete manufacture course of products.Wherein the antiforge function of each cylinder mould is: surface layer cylinder mould: watermark, safety line, look is fine, color dot is false proof.Sandwich layer cylinder mould: auxiliary surface layer safety line is false proof, look fine, color dot, chromatograph are false proof.Bottom cylinder mould: look fibre, color dot, chromatograph are false proof.And three cylinder moulds can single net, two net, three net sync run during practical operation.
According to said method, the present invention can obtain safe live width at 1.5-12.0mm, and weight per unit length (every square of grammes per square metre) is at 50-300g/m
2, therefore the kind of the applicable application of paper is more broad.The present invention is the cheque paper of the security element features such as print, safety line, coloured or colourless (iridescent) look fibre, color dot, chromatogram, chromatograph of catchmenting.The present invention can overcome non-plant fibre security element easily because the deficiency that when artificial origin comes off and adopts electronic equipment detection security element, sensitivity is low simultaneously.When adopting electronic equipment to detect anti-forge paper of the present invention, because paper tow sides are of uniform thickness and the thinnest, when therefore adopting this three cylinder mould shaping, the sensitivity of electronic equipment detection security element is the highest, it is the most accurate to detect, the anti-forge paper produced like this can adapt to the society of nowadays electronic information more, grow with each passing hour, add Application Areas.
Claims (3)
1. the shaping pulping method of fibre false-proof element anti-fake paper, it comprises the steps, cheque paper is shaping, dehydration, dry, top sizing, press polish, batch, cut whole choosing and pack piece, it is characterized in that described cheque paper forming step adopts three cylinder mould starchings:
Slurries are flowed uniformly to by the pulp distributor on the first net groove and have on the bottom cylinder mould of drainage mesh, then dewater under the effect of taking off paper rod by the starching of bottom cylinder mould, and transfer is to sandwich layer cylinder mould;
The starching of sandwich layer cylinder mould, by have string or non-plant fibre silk, point, sheet security element the pulp distributor of slurries on the second net groove flow uniformly on sandwich layer cylinder mould, then dewater under the effect of taking off paper rod, and transfer is to surface layer cylinder mould;
Slurries are flowed uniformly to by the pulp distributor on the 3rd net groove and have on the surface layer cylinder mould of drainage mesh by the starching of surface layer cylinder mould, then dewater under the effect of taking off paper rod, take off paper; Be sent to vacuum dehydration roller by ring-like gauze of taking off, begin to take shape the anti-forge paper that mass dryness fraction reaches more than 20%;
Described surface layer cylinder mould has watermark net.
2. the shaping production line of manufacturing paper with pulp of fibre false-proof element anti-fake paper, it comprises wet end, press section, front baking cadre, surface-sizing station, post-drying portion, calecder section, reeling end, cuts whole choosing packaging piece portion;
It is characterized in that: described wet end comprises approach system with slurry and vacuum dehydration roller further, and vacuum dehydration roller is positioned at approach system rear end with slurry; Approach system with slurry has three starching cylinder moulds;
Approach system with slurry is made up of the first net groove, the second net groove and the 3rd net groove, wherein the second net slot is in the first net groove rear end, 3rd net slot is in the second net groove rear end, bottom cylinder mould is furnished with in first net groove, be furnished with in second net groove for the shaping sandwich layer cylinder mould of string or non-plant fibre silk, point, sheet, in the 3rd net groove, be furnished with surface layer cylinder mould;
Described each cylinder mould upper end is all furnished with dehydration and takes off paper rod, and is provided with pulp distributor in each net groove.
3. one kind as described in the appended claim 1 method make and cheque paper containing string or non-plant fibre silk, point, sheet security element.
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| CN201210204644.3A CN102704315B (en) | 2012-06-20 | 2012-06-20 | Fiber anti-counterfeit element anti-counterfeit paper forming and making with pulp method and paper making with pulp production line |
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| CN201210204644.3A CN102704315B (en) | 2012-06-20 | 2012-06-20 | Fiber anti-counterfeit element anti-counterfeit paper forming and making with pulp method and paper making with pulp production line |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074807B (en) * | 2013-01-28 | 2015-11-18 | 浙江华邦特种纸业有限公司 | The manufacture method of ultra-thin light basis weight sound-absorbing facing paper |
| CN108570874B (en) * | 2017-12-29 | 2019-07-05 | 仙鹤股份有限公司 | A kind of ultrathin type body paper paper making equipment |
| CN110241655B (en) * | 2019-06-21 | 2024-03-19 | 辽宁西电兴启电工材料有限公司 | Insulating paperboard production line |
| CN112895756A (en) * | 2021-02-05 | 2021-06-04 | 互联智慧信息科技(北京)有限公司 | Paper containing addable elements and preparation method thereof |
| CN113957748B (en) * | 2021-10-28 | 2023-01-20 | 山东天和纸业有限公司 | Fiber and fluorescence anti-counterfeiting paper and preparation method thereof |
| CN117107554A (en) * | 2023-10-18 | 2023-11-24 | 山东博汇纸业股份有限公司 | Colored anti-counterfeiting gypsum plaster board protective paper and production method thereof |
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| CN1502743A (en) * | 2002-11-22 | 2004-06-09 | 邵素军 | Anti-counterfeit paper and production method |
| CN1752340A (en) * | 2004-09-23 | 2006-03-29 | 珠海经济特区红塔仁恒纸业有限公司 | Anti-forge coating white cardboard and producing method thereof |
| CN2931544Y (en) * | 2006-07-26 | 2007-08-08 | 深圳市凯力诚实业发展有限公司 | Anti-falsification paper production apparatus |
| CN101748638A (en) * | 2008-12-01 | 2010-06-23 | 中国印钞造币总公司 | Compound watermark anti-counterfeiting paper and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202705791U (en) * | 2012-06-20 | 2013-01-30 | 四川省津诚纸业有限公司 | Fiber anti-fake element anti-fake paper three-mesh cage molding papermaking production line |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1502743A (en) * | 2002-11-22 | 2004-06-09 | 邵素军 | Anti-counterfeit paper and production method |
| CN1752340A (en) * | 2004-09-23 | 2006-03-29 | 珠海经济特区红塔仁恒纸业有限公司 | Anti-forge coating white cardboard and producing method thereof |
| CN2931544Y (en) * | 2006-07-26 | 2007-08-08 | 深圳市凯力诚实业发展有限公司 | Anti-falsification paper production apparatus |
| CN101748638A (en) * | 2008-12-01 | 2010-06-23 | 中国印钞造币总公司 | Compound watermark anti-counterfeiting paper and manufacturing method thereof |
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Denomination of invention: Fiber anti-counterfeiting element anti-counterfeiting paper three net cage forming and manufacturing method and production line Effective date of registration: 20231218 Granted publication date: 20150311 Pledgee: Chengdu SME financing Company Limited by Guarantee Pledgor: SICHUAN JINCHENG PAPER Co.,Ltd. Registration number: Y2023990000624 |
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