CN202608159U - Safe-guarding and anti-counterfeiting thin film - Google Patents

Safe-guarding and anti-counterfeiting thin film Download PDF

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Publication number
CN202608159U
CN202608159U CN2012200833401U CN201220083340U CN202608159U CN 202608159 U CN202608159 U CN 202608159U CN 2012200833401 U CN2012200833401 U CN 2012200833401U CN 201220083340 U CN201220083340 U CN 201220083340U CN 202608159 U CN202608159 U CN 202608159U
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layer
film
safety anti
fake film
counterfeiting
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Inventor
杨帆
盖玉健
滕超
黄宁勇
吴庆
邹伟
杨向明
喻志刚
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Kejin Biological Recognition (Shenzhen) Co., Ltd.
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3M China Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/21—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for multiple purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • B42D2035/20—
    • B42D2035/44—

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Abstract

The utility model discloses a safe-guarding and anti-counterfeiting thin film. The safe-guarding and anti-counterfeiting thin film comprises a polymer layer and a micro lens array layer, wherein the polymer layer is arranged under the micro lens array layer and contacts with the micro lens array layer, and the micro lens array layer comprises a plurality of micro lenses which can focus preset radiation light beams in the polymer layer and carbonize a corresponding portion of the polymer layer. Contrast in color exists between a carbonization portion and other portions of the polymer layer and therefore a pattern is formed, and the pattern takes on macroscopic three-dimensional floating images under common ambient lights. The safe-guarding and anti-counterfeiting thin film has the application characteristics of being fragile and transparent, and capable of supporting by itself and being printed and the like. As being produced by irreversible physical changes of material, the three-dimensional floating images can not be distorted, or duplicated or replaced. Based on the characteristics, the safe-guarding and anti-counterfeiting thin film can be used in a safe-guarding and anti-counterfeiting field such as anti-counterfeiting marks, anti-counterfeiting film-covering, anti-counterfeiting packages and anti-transfer.

Description

The safety anti-fake film
Technical field
The utility model relates to a kind of safety anti-fake film, more specifically, relates to a kind of safety anti-fake film that utilizes laser 3D floating image technology.
Background technology
At present, the safety anti-fake film sale that utilizes laser 3D floating image technology has been arranged on the market.Laser 3D floating image is the unique technology of 3M.It is to utilize emittance in having the membrane structure of microlens array, to write a kind of technology of the three-dimensional pattern that floats.Now, this technology is applied in products such as car plate anti-counterfeiting mark, the false proof overlay film of passport.
Should two kinds of more materials of technology use be the little duplication process of the 3M lens arra film of making and reflective membranes that comprise glass microsphere at present---with the Scotchlite of traffic mark department TMThe Confirm of series and security system department TMProduct line is typical case's representative.Lens arra in these materials and glass microsphere are the critical optical components of 3D imaging.Little microlens array that duplicates formation can be used for substance transfer technology and makes colored floating image.And the material layers such as metal/metal oxide/metal sulfide that the reflective membrane material that is used to make floating image comprises one deck glass microsphere usually and makes through vacuum evaporation process, this layer generally has reflection action.The technology of on these materials, making the unsteady pattern of 3D is: utilize emittance irradiation materials such as laser, energy sees through sealer and is focused on the vacuum evaporation layer by glass microballoon then, makes the material of focal position be destroyed.Because can not play reflection action perhaps because seen through by light more easily, thereby ruined part can be observed through reflection ray and transmitted ray.
Utilize existing material and technology, laser 3D floating image technology has obtained successful application in safety anti-fake film field.Yet the researcher is still seeking to use other materials and technology to realize the safety anti-fake film that cost is low, simple in structure, range of observation is big, picture contrast is high.
The utility model content
The utility model has disclosed a kind of false-proof film with three-dimensional floating image anti-counterfeiting characteristic.Be different from prior art, this false-proof film structure is no retroreflecting light under the condensation light source irradiation.The three-dimensional floating image of its realization is observed under ordinary light light source condition and identification easily.But simultaneously this film have frangible self-supporting, can print, application characteristic such as transparent.Because three-dimensional floating image is produced by the irreversible physical change of material itself, so it is difficult to distorted, duplicate or replace.Based on above characteristic, this film can be applicable to safety anti-fake fields such as anti-counterfeiting mark, false proof overlay film, anti-counterfeit package, anti-transfer.
An embodiment according to the utility model provides a kind of safety anti-fake film, and this safety anti-fake film comprises: polymeric layer; And microlens array layer; Wherein said polymeric layer is set at below the said microlens array layer and with said microlens array layer and contacts, and said microlens array layer comprises a plurality of can predetermined radiation laser beam be focused in the said polymeric layer and with the lenticule of the appropriate section carbonization of said polymeric layer; Be distributed with carbonization part in the wherein said polymeric layer in the focal position of said predetermined radiation laser beam; There is the contrast on the color in said carbonization part and constitutes pattern with other parts of said polymeric layer, and said pattern is rendered as macroscopic three-dimensional floating image under conventional environment light.
According to the safety anti-fake film of the utility model, the microlens array layer is preferably soot layer.Said lenticule can have the shape of spheroid, hemisphere or non-spheroid.
According to the safety anti-fake film of the utility model, said lenticule partly is embedded in the said polymeric layer.
According to the safety anti-fake film of the utility model, the lenticule in the said microlens array can be discrete or not discrete.
According to the safety anti-fake film of the utility model, said safety anti-fake film can be transparent or opaque.
According to the safety anti-fake film of the utility model, said safety anti-fake film preferably also comprises the gluing layer that is set at below the said polymeric layer.
According to the safety anti-fake film of the utility model, said safety anti-fake film preferably also comprises the back sheet that is set at below the said polymeric layer.
According to the safety anti-fake film of the utility model, said safety anti-fake film preferably also comprises the back sheet that is set at below the adhesive layer.
According to the safety anti-fake film of the utility model, said safety anti-fake film preferably also comprises the protective layer that is arranged on the microlens array layer.
According to the safety anti-fake film of the utility model, the application of said safety anti-fake film preferably includes anti-counterfeiting mark, false proof overlay film or anti-counterfeit package.
Description of drawings
The lamination layer structure of the safety anti-fake film of the schematically illustrated embodiment according to the utility model of Fig. 1;
The image effect that Fig. 2 a obtains when showing right-angle view according to a kind of safety anti-fake film of the embodiment of the utility model;
The image effect that Fig. 2 b obtains when showing with this film of miter angle observation;
The image effect that Fig. 2 c obtains when showing and observing this film with-miter angle;
Fig. 3 illustrates a kind of anti-counterfeiting mark film product according to an embodiment of the utility model;
Fig. 4 illustrates the situation when demonstrate,proving the card overlay film according to the embodiment of the utility model a kind of and peel off;
Fig. 5 illustrates the broken situation of this overlay film generation when as Fig. 4, peeling off card card overlay film;
Fig. 6 illustrates point-like that the safety anti-fake film according to an embodiment of the utility model the appeared image that floats.
The specific embodiment
In the utility model, utilize new material and imaging process to make simple in structure and the low antifalse safety film of cost, this film also can demonstrate apparent 3D floating image under the ordinary ray condition.Particularly, utilize laser or other emittance to make the part material carbonization in resin or the adhesive, thus the variation that produces material color.Because cause the variation of contrast, therefore can be not only can clearly not observe the image of formation with conventional environment light by retroreflecting light or transmitted light through the variation of this material intrinsic colour.As far as have a light background or material transparent, the dark pattern of carbonization has better contrast, thereby also observes more easily.Because the utility model adopts the mechanism of carbonization variable color, so it can use polymer such as most resin, adhesive.As long as this polymer can be carbonized after absorbing enough energy, promptly can utilize it to cooperate glass microsphere or microlens structure and produce the high 3D floating image of contrast.
The false-proof film structure of the utility model comprises following several kinds of combining structures:
1. optical focus layer/polymer (light absorbing zone)/polymer (gluing layer)/back sheet
2. optical focus layer/polymer (light absorbing zone)
3. protective layer/optical focus layer/polymer (light absorbing zone)/polymer (gluing layer)/back sheet
4. protective layer/optical focus layer/polymer (light absorbing zone)
Polymeric layer wherein can be made up of adhesive or resin etc.These adhesives or resin can be heat molten type, and be solvent type, water base, or the like.These polymer can be polyurethane, polyacrylate, polyester, Isooctyl acrylate monomer/butyl acrylate/acrylic acid (EHA/BA/AA) copolymer, copolyester, UV cured resin or their combination.Can add crosslinking agent, to improve the adhesion between microlens array layer and the polymeric layer.The protection transition zone can be polymer, dyestuff etc., and it has the effect of covering protection optical focus layer.
This polymeric layer also can comprise specific source of radiation energy absorption additive preferably, to strengthen contrast and the sharpness that color changeable effect improves pattern.These to the specific source of radiation energy absorption preferably additive exist with the state of pressed powder usually, and need abolish the reunion of powder through mechanical dispersion process such as ball milling, sand millings, it carefully is dispersed in the polymeric layer uniformly.Radiation source with near infrared band is an example, and a lot of inolrganic chemicals are better to this wave band absorptance, therefore can these inolrganic chemicals be joined in the resin material with certain proportion, and with this resin materials of radiation source irradiates such as near infrared band laser.Like this, be dispersed in additive granules absorbed radiation energy and the heating consumingly in the resin, thereby cause resin material carbonization on every side.Common this type of material such as TiO 2, Sb 2O 3, mica, carbon black etc.In addition; Also have on the market specially and sell, like
Figure BSA00000680715300041
of Merck company etc. to the absorbent of near-infrared laser.Certainly, for different radiation sources, should promote the absorption of material with corresponding absorbent to emittance.
The optical focus layer can be made up of glass microsphere, also can be made up of ceramic microsphere or polymer microballoon etc.Perhaps, it can be the microlens array that for example utilizes little reproduction technology making of 3M.In a word, material that can the focused radiation energy all can be used for making this optical focus layer.However, the optics focus layer is generally the microlens array layer of being made up of a plurality of lenticules usually.This microlens array layer preferably has the refractive surface that can form images, to facilitate the formation of image.Usually, this is provided by curved surface.As far as having the lenticule of curved surface, it preferably has uniform refractive index.As far as having other material of graded index (GRIN), it need not form curved surface and come refract light.The lenticule surface can be a sphere, also can be aspheric surface.As long as refractive surface forms real image, then lenticule can have any symmetry such as cylinder or spheroid.Lenticule itself can be discrete form, puts down-protruding lenslet circular biconvex lenslet, rod, microsphere, ball, or cylinder lenslet such as circle.Form lenticular material and comprise glass, polymer, ore, the combination of crystal, semiconductor and these and other material.Also can use not discrete lenticular lens elements.Thereby, also can use by the lenticule that duplicates or embossing (embossing) technology (wherein, the shape of change sheet surface produces the repetition profile with imaging characteristic) forms.
Suitable microlens material should be minimum to absorption of visible light, and using energy source to make among the embodiment of polymeric layer imaging, and this material also should demonstrate the minimum performance of the absorption of this energy source.No matter lenticule is discrete or duplicates, and no matter which kind of made lenticule use, and lenticular refractive power preferably makes the anaclasis that arrives refractive surface and in lenticular opposite side focusing.More specifically, light will focus on the lenticular back surface or focus on the contiguous lenticular material.Lenticule is preferably in the place focused radiation light of polymeric layer, the real image that dwindles with formation.
Though refractive index can be used greater than 1 lenticule in theory, the lenticule that on visible light and infrared light wavelength, has the homogeneous refractive index between 1.5 and 3.0 is the most useful.Though the lenticule of other size also can use, the lenticule that diameter is between 15 microns to 275 microns is more suitable.As far as seeming to leave microlens layer relatively than the 3D composograph of short distance (0-50mm); Use has in above-mentioned scope can obtain excellent images resolution ratio than the lenticule of the diameter of small end; Relatively remote (＞50mm) 3D rendering uses larger-diameter lenticule can obtain excellent images resolution ratio as far as seeming to leave microlens layer.
Can expect the lenticule of different shape, flat-convex, cylindrical such as microsphere, sphere shape or aspheric surface shape lenticule, they can produce similar optical results under the suitable situation of size.In U.S. Pat 2,326, can find this class formation information more specifically in 634 and US3,801,183, and can in existing Scotchlite 8910 serial reflective cloth products of 3M and Scotchlite 3290 serial reflecting film products, find this class formation.
In the technology of making the 3D floating image, can adopt the laser of wave-length coverage from 400nm to 1200nm to be used as radiation source.Also can adopt the laser of other wave-length coverage (for example 200～400nm and 1200 μ m are to 10 μ m).The pulsewidth of laser output is less than 30ns, and pulse energy is regulated according to the difference of material.
Below, will come specifically to introduce the manufacturing approach of various anti-tamper security films and the safety anti-fake film that makes through such method through some embodiment.Should understand that these embodiment only are used for illustrative purposes, they also constitute restriction to the utility model never in any form.
Embodiment
Embodiment 1:
Anti-counterfeiting mark is used film: glass microsphere layer/resin bed/pressure sensitive adhesive/backing
At first, adopt the mode of curtain coating coating, resin material is coated on the prefabricated glass microsphere diaphragm.This prefabricated glass microsphere diaphragm structure is for be bonded in one deck glass microsphere that forms on one deck paper base material equably, and the refractive index of these glass microspheres is 1.9, and diameter is 50 μ m.And this resin material adopts the R961 of DSM N. V., and it does thick is 50 μ m.In reality, the dried thick of this R961 resin material can be selected from several microns to 70 microns number range, as long as glass microsphere is exposed in the air.After accomplishing coating, resin material was solidified 5 minutes under the temperature of 120 ℃ in baking oven.Then, print predetermined pattern (floating image that this pattern is stated after being not used in formation) through silk-screen printing technique at the exposed R961 resin layer surface of drying.Afterwards, adopt the mode of curtain coating coating that the 3MCSA531C pressure sensitive adhesive is coated on the R961 again.After accomplishing coating, this pressure sensitive adhesive is heating and curing.The pressure-sensitive adhesive layer opposite side covers one deck back sheet, and the material of this back sheet can be selected from thin polymer film, paper, fabric etc.At last glass microsphere diaphragm paper base material is taken off.
Afterwards, adopt the pulse laser of pulse energy 6mJ and the about 10ns of pulse width, its output wavelength is 1064nm (the for example DCR-3 YAG Q-switched laser of Spectra-Physics company).After laser instrument, through 5X beam-expanding telescope and numerical aperture be 0.64 and focal length be that the non-spherical lens of 39mm makes energy directed again.Be directed to electronic XYZ platform to light from non-spherical lens.The above-mentioned thin slice of making is placed on the platform, and with laser radiation glass microsphere exposed surface, platform moves with respect to the light beam space three-dimensional according to the track of setting, and can obtain three-dimensional floating image.At last, this thin slice is carried out cross cutting processing, can produce the anti-fake mark of the three-dimensional floating image with customization, Fig. 3 shows this anti-counterfeiting mark film product.Through the prepared structure of above processing step is the lamination layer structure of being made up of glass microsphere layer/resin bed/pressure sensitive adhesive/backing, referring to Fig. 1.Particularly; Through the last thin slice that obtains of above processing step comprise one deck microlens array layer (glass microsphere layer) 1, below this microlens layer and the one layer of polymeric layer 2 (like the R961 resin material layer) that contacts with this microlens array layer, below this polymeric layer 2 and the pressure-sensitive adhesive layer 3 that contacts with this polymeric layer 2 (like 3M CSA531C pressure sensitive adhesive) and below this pressure-sensitive adhesive layer 3 and the backing 4 that contacts with this pressure-sensitive adhesive layer 3; And be distributed with the carbonization part that is caused by laser radiation beam in this polymeric layer, the position of these carbonization parts overlaps the position that laser radiation beam focuses in this polymeric layer respectively with each lenticule of microlens layer.Owing to other parts of these carbonizations part and polymeric layer exist the contrast on the color to constitute pattern, and this pattern is shown as macroscopic three-dimensional floating image under ambient light
Can in conventional environment light, easily observe the 3D floating image that adopts above-mentioned material and technology to produce.Fig. 2 show in natural light environment with different viewing angles under observe the image effect that appears when adopting anti-counterfeiting mark that above-mentioned material and technology processes with film.Particularly, the image effect that the image effect that Fig. 2 a obtains when showing this film of right-angle view, Fig. 2 b obtain when showing and observing this film with miter angle, and Fig. 2 c shows with-image effect that miter angle obtains when observing this film.Obviously, under these three kinds of viewing angles, this film all can demonstrate the image that five-pointed star etc. has high definition and contrast.This shows can observe this film with sizable viewing angle, and viewed floating image to have high definition and contrast.
In above technology, also can wavelength be in laser in the scope of 200nm to 10 μ m as radiation source, and the energy of laser is less than 30ns, the pulsewidth of laser is regulated according to the difference of material.
In addition, operable polymeric material is not limited to the R961 of above-described DSM N. V..Confirm; Can the R960 of DSM N. V., the R1005 resin of DSM N. V., the L140D PUR of 3M, 5713 PURs of Lubrizol company, 3075 adhesives of 3M company be used as above-mentioned polymeric material; Adopt identical manufacture craft and parameter, can make the safety anti-fake film of similar effect.
Embodiment 2:
Anti-counterfeiting mark is used film: glass microsphere layer/pressure sensitive adhesive/backing paper
At first, adopt the mode of curtain coating coating that 3M 3075 adhesives (pressure sensitive adhesive) are coated on the backing paper, the coating back is cured adhesive.Be 70 μ m with diameter then, refractive index is that 1.9 glass microsphere is sprinkling upon on the uncured adhesive layer uniformly, guarantees to trickle down glass microsphere on diaphragm and arranges closely and have only one deck, this diaphragm structure that will form then to place curing under the high temperature.
Afterwards, the glass microballoon laminar surface in above-mentioned formation prints predetermined pattern (floating image that this pattern is stated after being not used in formation) through silk-screen printing technique.Adopting output wavelength then is 532nm; Pulsewidth 7ns; Pulse energy is this diaphragm structure of laser radiation of 4mJ, adopts the method identical with embodiment 1 through laser radiation the appropriate section carbonization of adhesive to be come pattern-making, thereby can obtain the unsteady pattern of 3D of fine definition and contrast.
At last, the thin-film material that obtains through above processing step is carried out cross cutting processing (not carrying out waste discharge), promptly obtain required anti-counterfeiting mark film product.This product has the lamination layer structure by glass microsphere layer/pressure sensitive adhesive/backing paper constitutes.
During application, use the adhesive tape anti-counterfeiting mark that cross cutting is good to cling and paste, then with the anti-counterfeiting mark sur-face peeling of adhesive tape from pasting.
Embodiment 3:
Card card overlay film (top layer): glass microsphere layer/resin/heat-sensitive glue
At first, adopt the mode of curtain coating coating, resin material is coated on the prefabricated glass microsphere diaphragm.This prefabricated glass microsphere diaphragm structure is for be bonded in one deck glass microsphere that forms on one deck paper base material equably, and the refractive index of these glass microspheres is 1.9, and diameter is 50 μ m.And this resin material adopts the R961 of DSM N. V., and it does thick is 50 μ m.In reality, the dried thick of this R961 resin material can be selected from several microns to 70 microns number range, as long as glass microsphere is exposed in the air.After accomplishing coating, resin material was solidified 5 minutes under the temperature of 120 ℃ in baking oven.Afterwards, adopt the mode of curtain coating coating that 3M HSA02 HAA heat-sensitive glue is coated on the R961 resin material layer.After accomplishing coating, again this HSA02 HAA heat-sensitive glue is cured.
Subsequently, will cut into card card size through the thin-film material that comprises paper base material, resin and heat-sensitive glue that above-mentioned processing step is processed, for example 85.6mm * 54.0mm.To cut sheet heat-sensitive glue side and cling on the card card surface, and with it at 140 ℃, 100N/cm 2Pressure condition under hot pressing 12 seconds.In reality, this temperature can be in 100 to 180 degrees centigrade the scope, and this pressure can be in 10 to 200N/cm 2Scope in.Then, the paper base material on the soot layer is peeled off (referring to Fig. 4).
Adopt lasing light emitter and the technological parameter identical, can on this thin-film material, the unsteady pattern of 3D be made in the appropriate section carbonization of resin bed through laser radiation with embodiment 1.After the design producing operation, just can be observed the pattern of high-contrast and definition.The card card overlay film product that makes like this has the lamination layer structure of being made up of glass microsphere layer/resin bed/heat sensitive adhesive layer.
This overlay film that pastes on the card card has the anti-function that shifts, and promptly in taking off the process of opening, this overlay film can't be opened by complete taking off, but fragmentation (referring to Fig. 5) can take place.This characteristic makes it have good anti-counterfeiting performance.
Embodiment 4:
Card card overlay film (interlayer): protective layer/glass microsphere layer/resin/heat sensitive adhesive layer
In this card card overlay film product, the glass microsphere refractive index of employing is 2.2, and diameter is 50 μ m.Process the lamination layer structure of glass microsphere layer/R961 resin bed/heat sensitive adhesive layer in the method for utilizing embodiment 3 after, utilize the surface coated one deck polyvinyl chloride resin layer of the method for curtain coating coating again, thereby play the effect of protection at glass microsphere.The refractive index of the surface protection layer material that adopts here is about 1.3, and its thickness is 100 μ m.Adopt the higher glass microsphere of refractive index be in order to ensure radiation laser beam through after the refraction of glass microsphere, can focus on the light-absorbing resin layer R961 of glass microsphere near surface.Sealer can be any thickness, as long as transparent to the lasing source that adopts.
Adopt lasing light emitter and the technological parameter identical, can the unsteady pattern of 3D be made in the appropriate section carbonization of the resin bed of this thin-film material through laser radiation with embodiment 1.After the design producing operation, just can be observed the pattern of high-contrast and definition.The film that makes like this has the lamination layer structure of being made up of glass microsphere layer/resin bed/heat sensitive adhesive layer.
Then, with this film middle one deck as the diaphragm in the card card laminates process, at 150 ℃, 200N/cm 2Pressure condition under, through hot pressing mode through 16 minutes hot-forming.In reality, this temperature can be in 130 to 160 degrees centigrade the scope, and this pressure can be in 150 to 220N/cm 2Scope in.At last, hot-forming intermediate products through cross cutting, are promptly obtained having the card card product of middle false proof layer.
After processing thin-film material, can adopt wavelength to be in laser in the scope of 400nm to 1200nm as radiation source according to the method for embodiment 1 or 3.Other wavelength also is feasible like 200～400nm and 1200nm to 10 μ m.The lasing light emitter output pulse width that is adopted is less than 30ns, and its pulse energy is regulated according to the difference of material.Owing to adopted the R961 resin material, therefore selecting pulse energy for use is that 500mJ, pulse width are that 10ns, wavelength are 1064nm, and pulse frequency is the lasing source of 10Hz.In this case, can make the relevant portion generation carbonization of resin material and on resin material, form the unsteady image of point-like through laser emission.Fig. 6 shows the unsteady image of this point-like.
After using film that previous materials and technology processes by radiation source irradiates, can obtain the unsteady image of unique three-dimensional, this unsteady image is also high-visible under ordinary light.Rotate the visual angle, the unsteady image of this three-dimensional is dynamic effect on all directions; When the visual angle increased to a certain degree, the unsteady image of this three-dimensional disappeared.This three-dimensional pattern that image can be made up of lines that floats, for example letter, Chinese character etc. also can be dynamic dot patterns, for example elliptical point, round dot or outer rim are leg-of-mutton point etc.
Simultaneously, but this false-proof film be transparent, frangible self-supporting with printable.This transparent membrane can be used as false proof overlay film or the interlayer on card card, passport, the documentary evidence, and does not influence the identification to the print content on these certificates.The frangible characteristic of this false-proof film can satisfy the anti-demand that shifts of some false proof field material.In addition, but the structure of the self-supporting of this film has brought facility also for its application on anti-counterfeiting mark (like manual decals, the peeling off of label in the decals automatically).Through typography, can bring the lifting on more how apparent or the function for this false-proof film, also can be so that film becomes opaque.
This false-proof film can be used for various safety anti-fake film applications such as anti-counterfeiting mark, false proof overlay film, anti-counterfeit package, anti-unlatching, anti-transfer.
The foregoing description only exemplary explanation the utility model, but not be used to limit the utility model.Know and it will be understood by those of skill in the art that under the situation of spirit that does not depart from the utility model and scope any change and variation that the utility model embodiment is done all drop in the scope of the utility model.And the protection domain of the utility model should be confirmed by appended claim.

Claims (10)

1. safety anti-fake film comprises:
Polymeric layer; And
The microlens array layer,
Wherein said polymeric layer is set at below the said microlens array layer and with said microlens array layer and contacts, and said microlens array layer comprises a plurality of can predetermined radiation laser beam be focused in the said polymeric layer and with the lenticule of the appropriate section carbonization of said polymeric layer;
Be distributed with carbonization part in the wherein said polymeric layer in the focal position of said predetermined radiation laser beam; There is the contrast on the color in said carbonization part and constitutes pattern with other parts of said polymeric layer, and said pattern is rendered as macroscopic three-dimensional floating image under conventional environment light.
2. according to the safety anti-fake film of claim 1, wherein said lenticule has the shape of spheroid, hemisphere or non-spheroid.
3. according to the safety anti-fake film of claim 2, wherein said lenticule partly is embedded in the said polymeric layer.
4. according to the safety anti-fake film of claim 1, the lenticule in the wherein said microlens array is discrete or not discrete.
5. according to the safety anti-fake film of claim 1, said safety anti-fake film is transparent or opaque.
6. according to the safety anti-fake film of claim 1, said safety anti-fake film also comprises the gluing layer that is set at below the said polymeric layer.
7. according to the safety anti-fake film of claim 1, said safety anti-fake film also comprises the back sheet that is set at below the said polymeric layer.
8. according to the safety anti-fake film of claim 6, said safety anti-fake film also comprises the back sheet that is set at below the gluing layer.
9. according to each safety anti-fake film among claim 1 or the 6-8, said safety anti-fake film also comprises the protective layer that is arranged on the microlens array layer.
10. according to the safety anti-fake film of claim 1, the application of said safety anti-fake film comprises anti-counterfeiting mark, false proof overlay film or anti-counterfeit package.
CN2012200833401U 2012-02-29 2012-02-29 Safe-guarding and anti-counterfeiting thin film Expired - Lifetime CN202608159U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
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CN102692660A (en) * 2012-02-29 2012-09-26 3M中国有限公司 Product capable of realizing 3D floating images and manufacturing method thereof
CN103383492A (en) * 2013-07-25 2013-11-06 公安部交通管理科学研究所 Structure and method for achieving dynamic space imaging
CN105957446A (en) * 2016-07-08 2016-09-21 苏州苏大维格光电科技股份有限公司 Reflective film with dynamic three-dimensional spiral line and vehicle number plate
CN109835084A (en) * 2017-11-27 2019-06-04 吴宁飞 Application of the antifalse material in anti-fake payment and currency security, bank card etc.
CN114157736A (en) * 2020-09-08 2022-03-08 世灵科技株式会社 Mobile phone rear cover film structure applying micro-lens array on polycarbonate layer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102692660A (en) * 2012-02-29 2012-09-26 3M中国有限公司 Product capable of realizing 3D floating images and manufacturing method thereof
CN102692660B (en) * 2012-02-29 2014-10-15 3M中国有限公司 Product capable of realizing 3D floating images and manufacturing method thereof
CN103383492A (en) * 2013-07-25 2013-11-06 公安部交通管理科学研究所 Structure and method for achieving dynamic space imaging
CN103383492B (en) * 2013-07-25 2016-01-20 公安部交通管理科学研究所 Realize structure and the method for dynamic space imaging
CN105957446A (en) * 2016-07-08 2016-09-21 苏州苏大维格光电科技股份有限公司 Reflective film with dynamic three-dimensional spiral line and vehicle number plate
CN105957446B (en) * 2016-07-08 2018-07-03 公安部交通管理科学研究所 A kind of reflective membrane and automotive number plate containing dynamic solid helix
CN109835084A (en) * 2017-11-27 2019-06-04 吴宁飞 Application of the antifalse material in anti-fake payment and currency security, bank card etc.
CN114157736A (en) * 2020-09-08 2022-03-08 世灵科技株式会社 Mobile phone rear cover film structure applying micro-lens array on polycarbonate layer

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