CN105342084A - Fluorescent souvenir medal and preparation method thereof - Google Patents
Fluorescent souvenir medal and preparation method thereof Download PDFInfo
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- CN105342084A CN105342084A CN201510712259.3A CN201510712259A CN105342084A CN 105342084 A CN105342084 A CN 105342084A CN 201510712259 A CN201510712259 A CN 201510712259A CN 105342084 A CN105342084 A CN 105342084A
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- souvenir badge
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Abstract
The invention discloses a fluorescent souvenir medal and a preparation method thereof. According to the preparation method, a golden layer or a silver layer with the thickness of 20-200 nm is sputtered on the surface of a coinage steel material, and a layer of fluorescent film coats the golden layer or the silver layer. The preparation method of the fluorescent souvenir medal is rapid and simple; and by utilizing the characteristic that the fluorescent molecules have fluorescence enhancement on the surface of the thin-layer metal and the specificity of excitation wavelength and emission wavelength of the fluorescent molecules, the anti-counterfeiting of the souvenir medal is realized.
Description
Technical field
The present invention relates to a kind of souvenir badge or circulation coin field, especially a kind of fluorescent film that applies on surface is used for false proof souvenir badge and preparation method thereof
Background technology
Current souvenir badge mostly is gold or silverware, because it has certain ornamental value and reserve value, is easily faked by some lawless persons and makes profit.Existing anti-counterfeiting technology mostly is and makes word or oblique silk tooth at commemorative coin or souvenir badge edge, and along with the raising of mechanical processing technique, this mode cannot meet false proof needs; Laser holography semi-over, also makes this kind of anti-counterfeiting technology be challenged, adopt code anti-fake or micro picture and text anti-counterfeiting technology anti-counterfeit capability higher, but it is false proof to be limited to expert, not easily accept by masses.Chinese patent (application number 201320396267.8) discloses the pin hole being provided with one or more depression at noble metal body surface, the anti-counterfeiting technology of DNA anti-forgery ink is filled in pin hole, this technology antifalsification is high, but the DNA cost used is higher.
Optical anti-counterfeiting is also the anti-counterfeiting technology that anti-counterfeit capability is higher, current optical anti-counterfeiting is mainly used in the false proof of banknote, ticket, secure file etc., in the anti-counterfeiting field of coin, commemorative coin, souvenir badge, application is less, therefore needs to constantly update the Techniques of Optical Security that coin chapter adopts.
Summary of the invention
Goal of the invention: weaken for machinery antifalsification that is false proof or Laser Holographic Counterfeit-proof Technique in prior art, and the problem that code anti-fake technology, micro picture and text anti-counterfeiting technology and DNA anti-forgery ink technology are unsuitable accepted by the public, the invention provides a kind of fluorescence souvenir badge, each fluorescent dye is utilized to have excitation wavelength and the emission wavelength of oneself correspondence, at souvenir badge metal coating surface coating fluorescent film, false proof and certification is carried out by fluorescence, in addition, fluorescence molecule can realize Fluorescence Increasing at certain thickness smooth metal surface, improves antifalsification further.There is provided the preparation method of this fluorescence souvenir badge, method is simple and easy, quick.
Technical scheme: for achieving the above object, the present invention by the following technical solutions:
A kind of fluorescence souvenir badge, the base material of this souvenir badge is coinage steel, and this coinage steel surface deposits layer of metal coating, and described metal coating surface applies one deck fluorescent film.
Further, the described coat of metal is layer gold or the silver layer of thickness 20-200nm, and wherein layer gold is more effective than the Fluorescence Increasing of silver layer, metal layer thickness more than 200nm, Fluorescence Increasing decreased effectiveness or disappearance.
Further, fluorescent dye is coated in metal coating surface by getting rid of embrane method by described fluorescent film, and use the fluorescent film consistency of thickness getting rid of embrane method and obtain, uniformity is good.
Further, described fluorescent film is coated in upper surface and/or the lower surface of the coat of metal, and this fluorescent film can be arranged according to the specification of concrete souvenir badge and visual demand in the coated area of metal coating surface and position.
The preparation method of fluorescence souvenir badge: after coinage steel surface is processed, sputtering method is adopted to sputter the coat of metal of one deck 20nm-200nm at coinage steel outer surface, first clean souvenir badge with acetone, absolute ethyl alcohol rinses the acetone on surface, ultra-pure water cleans this layer gold surface further, then dries up with nitrogen; Drip fluorescent dye in the centre on souvenir badge layer gold surface, be then transferred to get rid of on film machine and get rid of film, obtain fluorescence souvenir badge, pack after natural drying.This preparation method is quick, simple and easy.
Further, the coat of metal is deposited on coinage steel surface by plasma sputtering or magnetron sputtering method, adopts the metal layer thickness of sputtering method deposition even, smooth surface.
Beneficial effect: compared with prior art, a kind of fluorescence souvenir badge provided by the invention, preparation method is fast simple, utilizes the fluorescence excitation spectrum of fluorescent film inner dye molecule and the selective and specificity of emission spectrum, realizes the false proof of souvenir badge and certification; Employing is got rid of embrane method and is coated in by fluorescence molecule on the coat of metal of the smooth thickness 20-200nm of souvenir badge, utilizes the field enhancement effect of smooth metal coating to fluorescence molecule of this thickness, improves the antifalsification of this souvenir badge further.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further described, and the description of specific embodiment is only example in essence, instead of intend to limit content disclosed by the invention and application thereof or use.
Embodiment
After coinage steel surface is processed, adopt sputtering method to sputter one deck 20 ~ 200nm metal cladding at coinage steel outer surface, this metal cladding first cleans souvenir badge with acetone, and absolute ethyl alcohol rinses the acetone on surface, ultra-pure water cleans this layer gold surface further, then dries up with nitrogen.Drip fluorescent dye solution on souvenir badge layer gold surface, be then transferred to and get rid of on film machine, stop after rotating speed 3000 turns/min, 30s getting rid of film, obtain fluorescence souvenir badge, pack after natural drying.Table 1 is the coat of metal of souvenir badge and the composition of fluorescent film in embodiment 1 ~ 5.
The coat of metal of souvenir badge and the composition of fluorescent film in table 1 embodiment 1 ~ 5
Metal cladding prepared by using plasma sputtering method or magnetron sputtering method, coating is all fine and close smooth, and uniform film thickness is good with the adhesion of coinage steel.Fluorescent dye is dissolved in PVA, re-uses spin-coating method film forming, uniform film thickness.The fluorescent dye that above embodiment uses for fluorescence quantum efficiency higher, the fluorescence molecule of good stability, low toxicity, just exemplary in essence at this, do not intend to limit.
Comparative example
After coinage steel surface is processed, adopt sputtering method to sputter the metal cladding of one deck 400nm at coinage steel outer surface, this metal cladding first cleans souvenir badge with acetone, and absolute ethyl alcohol rinses the acetone on surface, ultra-pure water cleans this layer gold surface further, then dries up with nitrogen.Drip fluorescent dye solution on souvenir badge layer gold surface, be then transferred to and get rid of on film machine, stop after rotating speed 3000 turns/min, 30s getting rid of film, obtain fluorescence souvenir badge, pack after natural drying.Table 2 is the coat of metal of souvenir badge and the composition of fluorescent film in comparative example 1 ~ 2.
The coat of metal of souvenir badge and the composition of fluorescent film in table 2 comparative example 1 ~ 5
| Comparative example 1 | Comparative example 2 | |
| Coating kind | Gold | Silver |
| Thickness of coating/nm | 400 | 400 |
| Sputtering mode | Plasma sputtering | Magnetron sputtering |
| Fluorescent dye | Rhodamine B-PVA | Rhodamine B-PVA |
The excitation wavelength Ex=480nm of rhodamine B, emission wavelength Em=550nm, fluorescein (Ex=490nm, Em=520nm), fluorescein isothiocynate (Ex=495nm, Em=530nm)
Adopt common fluorescent method FS to detect the relative intensity of fluorescence (RFI) of each souvenir badge, as shown in table 3, change the thickness of layer gold in embodiment 1 ~ 4, RFI increases gradually, and kind and the impact of sputtering mode on RFI of fluorescent dye are little; And the thickness of layer gold is thicker in comparative example 1, fluorescence intensity is less than the fluorescence intensity in embodiment 1 ~ 3.Embodiment 5 relative to comparative example 2, change be the thickness of silver layer, during thickness 50nm, RFI is stronger.
Table 3 embodiment 1-5 and comparative example 1,2 are relative intensity of fluorescence of middle souvenir badge
。
Claims (6)
1. a fluorescence souvenir badge, is characterized in that: the base material of described souvenir badge is coinage steel, and this coinage steel surface deposits layer of metal coating, and described metal coating surface applies one deck fluorescent film.
2. fluorescence souvenir badge according to claim 1, is characterized in that: the described coat of metal is layer gold or the silver layer of thickness 20-200nm.
3. fluorescence souvenir badge according to claim 1, is characterized in that: fluorescent dye is coated in metal coating surface by getting rid of embrane method by described fluorescent film.
4. the fluorescence souvenir badge according to claim 1 or 3, is characterized in that: described fluorescent film is coated in upper surface and/or the lower surface of the coat of metal.
5. prepare the method for fluorescence souvenir badge according to any one of Claims 1-4, it is characterized in that: after coinage steel surface is processed, sputtering method is adopted to sputter the coat of metal of one deck 20nm-200nm at coinage steel outer surface, then acetone cleaning, absolute ethyl alcohol rinses again, ultra-pure water cleans this layer gold surface further, then dries up with nitrogen; Drip fluorescent dye in the centre on souvenir badge layer gold surface, be then transferred to get rid of on film machine and get rid of film, obtain fluorescence souvenir badge, pack after natural drying.
6. fluorescence souvenir badge according to claim 5, is characterized in that: the described coat of metal is deposited on coinage steel surface by plasma sputtering or magnetron sputtering method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510712259.3A CN105342084A (en) | 2015-10-28 | 2015-10-28 | Fluorescent souvenir medal and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510712259.3A CN105342084A (en) | 2015-10-28 | 2015-10-28 | Fluorescent souvenir medal and preparation method thereof |
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| Publication Number | Publication Date |
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| CN105342084A true CN105342084A (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510712259.3A Pending CN105342084A (en) | 2015-10-28 | 2015-10-28 | Fluorescent souvenir medal and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106723725A (en) * | 2016-12-02 | 2017-05-31 | 通山鑫辉钻业有限公司 | A kind of fluorescence synthetic quartz diamond and its manufacture method |
Citations (6)
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| US3983646A (en) * | 1974-08-08 | 1976-10-05 | Gamex Industries Inc. | Chip structure |
| CN85105261A (en) * | 1985-07-09 | 1987-01-14 | 谢里特金矿有限公司 | Gold-plated coin, badge and token |
| CN2643707Y (en) * | 2003-04-22 | 2004-09-29 | 中国印钞造币总公司 | Polygon shaped currency and badge with galvanizing clad metal |
| CN101084124A (en) * | 2004-05-21 | 2007-12-05 | Cfc国际有限公司 | Process of making laminated sheet and product made by the process |
| CN204440822U (en) * | 2015-02-06 | 2015-07-01 | 深圳市金宝盈珠宝首饰有限公司 | With the ultrathin double-face gold, silver paper money of recessive fluorescence falsification preventing function |
| WO2015185536A1 (en) * | 2014-06-04 | 2015-12-10 | Friedrich Kisters | Security device and authentication method with dynamic security features |
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2015
- 2015-10-28 CN CN201510712259.3A patent/CN105342084A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3983646A (en) * | 1974-08-08 | 1976-10-05 | Gamex Industries Inc. | Chip structure |
| CN85105261A (en) * | 1985-07-09 | 1987-01-14 | 谢里特金矿有限公司 | Gold-plated coin, badge and token |
| CN2643707Y (en) * | 2003-04-22 | 2004-09-29 | 中国印钞造币总公司 | Polygon shaped currency and badge with galvanizing clad metal |
| CN101084124A (en) * | 2004-05-21 | 2007-12-05 | Cfc国际有限公司 | Process of making laminated sheet and product made by the process |
| WO2015185536A1 (en) * | 2014-06-04 | 2015-12-10 | Friedrich Kisters | Security device and authentication method with dynamic security features |
| CN204440822U (en) * | 2015-02-06 | 2015-07-01 | 深圳市金宝盈珠宝首饰有限公司 | With the ultrathin double-face gold, silver paper money of recessive fluorescence falsification preventing function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106723725A (en) * | 2016-12-02 | 2017-05-31 | 通山鑫辉钻业有限公司 | A kind of fluorescence synthetic quartz diamond and its manufacture method |
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Application publication date: 20160224 |