CN103921582A - Variable color thermoprinting membrane and making method thereof - Google Patents
Variable color thermoprinting membrane and making method thereof Download PDFInfo
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Abstract
The invention relates to a variable color thermoprinting membrane and a making method thereof. The variable color thermoprinting membrane includes a base membrane, a release layer, a transflective metal layer, an information medium layer, a total reflecting metal layer and a hot melt adhesive layer, the information medium layer is a yieldable organic medium coating, steps with different heights are arranged on the at least one surface of the information medium layer or in the information medium layer, and the height of each of the steps corresponds to the Fabri-Perot cavity of a color. The above Fabri-Perot cavities enable a plurality of variable color zones, variable color figures and characters to be formed on a same hot stamping membrane, can realize the change of the color effect with the viewing angle under different polarization, and the color of the novel thermoprinting membrane changes. The thermoprinting membrane is made in a roll-to-roll manner, a heat evaporation coating partially substitutes a vacuum sputter coating, the organic medium coating is made in an efficient nano-coating manner, and steps and a micro-nano structure are obtained through an impression means, and the method is simple and efficient, and is suitable for wide format production.
Description
Technical field
The present invention relates to a kind of Novel color-changing blocking film and manufacture method thereof, particularly a kind of blocking film simultaneously with variable color and polarization security feature.
Background technology
Blocking film can adopt heating and stressed way, and pattern or word are transferred to by thermoprint material surface, on commodity surface, forms gorgeous pattern.Common blocking film (hot-stamping foil) is mainly comprised of basement membrane, release layer (peel ply), color layers, reflecting layer (electrodeposited coating) and hot melt adhesive layer five parts.The general mylar that adopts the biaxial tension that 12 μ m-25 μ m are thick of basement membrane, Main Function is to support to depend on each coating in the above, is convenient to add the continuous thermoprint in man-hour; Release layer is generally the coatings such as organic siliconresin and forms, and has the performance that well comes off, and makes colorant, aluminium, glue-line can hightail polyester film and be transferred to be bonded in by the surface of thermoprint object after thermoprint; Color layers main component is film forming, heat resistance, transparent suitable synthetic resin and dyestuff, for Show Color; Reflecting layer is AM aluminum metallization film on the chromatograph of film generally, thereby reflection ray changes color layers color, makes it present metallic luster.Hot melt adhesive layer is generally meltable thermoplastic resin, and thermoprint material is bonded in and is scalded on object.
Although common blocking film can provide colorful picture and text visual effect, but it does not possess anti-counterfeiting performance, therefore, holographic technique is applied to the film formed holographic thermoprinted film of thermoprint and becomes an important developing direction, as CN201950978U, holographic thermoprinted film (holographic hot-stamping foil) is by basement membrane, release layer, Information Level, dielectric layer and hot melt adhesive layer form, wherein Information Level is impression holography, yet, develop rapidly along with holographic false proof series products, the anti-counterfeiting power of single traditional holographic anti-counterfeiting hot stamping film with holographic false proof function declines gradually.Meanwhile, owing to only carrying out display pattern information by information recording layer in traditional holographic anti-counterfeiting hot stamping film, the appearance design of traditional holographic anti-counterfeiting hot stamping film is also subject to certain restrictions.
On the other hand, utilizing the interference between multilayer optical film and the color shifting ink (Optical Variable Ink) and the color shifting ink anti-counterfeiting technology (US5171363 and derivative patent thereof) that develop out, is also important anti-fake material.Color shifting ink is by peeling off the coating of assembly of thin films from substrate, after smashing, mix in ink, assembly of thin films in color shifting ink not only has the reflectance spectrum of visible light wave range, the reflectance spectrum also with ultraviolet and infrared band, when viewing angle becomes large, the effect of formation " gold turns green ", " the green indigo plant that becomes ", is usually used in banknote and optical security is false proof.Usually, this assembly of thin films coating needs at least 6 layers of symmetrical evaporations: substrate, release layer, semi-transparent semi-reflecting metal film layer, dielectric layer, the type that is all-trans metallic diaphragm, dielectric layer, semi-transparent semi-reflecting metal alloy layer.Its preparation method at least comprises the following steps: 1, and plating release layer; 2, three layers or three layers above multi-layer colour-changing membrane structure of evaporation; 3, the multi-layer colour-changing membrane structure that plating is symmetrical with step 2; 4, repeat above-mentioned steps, and detect arrangement, remove the part that non-conformity of quality requires; 5, demoulding dissolves release layer in solvent; 6, residual release layer material, filter solvents are gone in rinsing; 7, in collection, clean fragment in step, shatters on request; 8, the fragment that upper step is pulverized, carries out surface treatment, can in ink adhesive, disperse preferably; 9, by surface treated fragment, evenly mix in ink adhesive, make printing-ink.Therefore the total film of color shifting ink is that the number of plies is many, and cost is high, and it is many to peel off the operation of smashing.
On this basis, CN102463758A proposes holographic anti-counterfeiting hot stamping film, by printing ink layer on information recording layer (described ink sold off in ink, fluorescent ink, luminous ink, temperature induced color changing ink, infrared printing ink and perfumed ink by visual colored ink, light one or more mixture form), although strengthened antifalse effect, make its appearance design more diversified, but still can not avoid the use of ink.Patent CN100526092C proposes a kind of optically variable element consisting of film sequence, there is at least one wall and produce gamut by interference, because its wall adopts inorganic dielectric material, the method of covering by marking roll or multiple roller coat changes the thickness of wall, it is very difficult that the coating of this kind of coating means has the wall of different layers thick (100nm left and right), and need high technology expense; In order to improve the anti-forgery security of this optically variable element, by layer of transparent layer is set on film sequence, and on hyaline layer, impress diffraction structure, produce additional diffraction effect.Therefore, described in patent CN100526092C and scheme to apply the spacer process of different-thickness expensive, and this coating processes is difficult for making pixelation image; Diffraction optics is false proof simultaneously will realize by impress diffraction structure on extra hyaline layer.Therefore, complicated and on same a slice blocking film, can not form the shortcoming of multiple color change interval for existing variable color blocking film production process, the invention provides a kind of solution of novel variable color blocking film.
Summary of the invention
In view of this, the object of the invention is to propose a kind of new blocking film, can be on same a slice blocking film, form multiple color change interval, variable color figure and word, also can realize the color effects under different polarization, along with the change of viewing angle, the color of this Novel color-changing blocking film also changes.
A kind of variable color gilding film proposing according to object of the present invention, comprise basement membrane, release layer, semi-transparent semi-reflecting metal level, information medium layer, the type that is all-trans metal level and hot melt adhesive layer, described information medium layer be can flow organic media coating, its at least one surface or the inner different step of multiple height that is provided with, on described step by described semi-transparent semi-reflecting metal level or described in a kind of covering of being all-trans in type metal level, and another surface relative with step by described semi-transparent semi-reflecting metal level or described in the another kind that is all-trans in type metal level cover, described semi-transparent semi-reflecting metal level, information medium layer and the type metal level mechanics Fabry-Perot-type cavity that is all-trans, the Fabry-Perot-type cavity of the corresponding a kind of color of height of each step.
Preferably, described semi-transparent semi-reflecting metal level and the type metal level that is all-trans are separately positioned on two surfaces of described information medium layer.
Preferably, a surface in two surface of described information medium layer is provided with the different step of multiple height, and another surface is plane.
Preferably, described semi-transparent semi-reflecting metal level is connected with described release layer simultaneously, described in type metal film while of being all-trans be connected with described hot melt adhesive layer.
Preferably, described semi-transparent semi-reflecting metal level is arranged at the inside of described information medium layer, described in the type metal level that is all-trans be arranged on the surface that described information medium layer is relative with described step, and be connected with described hot melt adhesive layer simultaneously.
Preferably, two surfaces of described information medium layer are plane, and wherein another surface relative with being provided with the type layer on surface of metal that is all-trans is connected with described release layer.
Preferably, described in the type metal level that is all-trans be arranged at the inside of described information medium layer, described semi-transparent semi-reflecting metal level is arranged on the surface that described information medium layer is relative with described step, and is connected with described release layer simultaneously.
Preferably, two surfaces of described information medium layer are plane, and wherein another surface relative with being provided with semi-transparent semi-reflecting layer on surface of metal is connected with described hot melt adhesive layer.
Preferably, the distribution of color that described multiple differing heights step is pressed required image, or by the shape of required figure, be made into the grating with polarization variable color.
Simultaneously, the invention allows for a kind of variable color gilding film manufacture method, be included in the step of making release layer on basement membrane, on release layer, make the step of the Fabry-Perot-type cavity of multiple different-thickness, and the step of making hot melt adhesive layer on Fabry-Perot-type cavity, the making of described Fabry-Perot-type cavity comprises the making of half-reflection and half-transmission metal level, the making of information medium layer, the making of the impression of step and the type metal level that is all-trans.
Preferably, described basement membrane is flexible material, and the coating process of described each layer and the imprint process of step carry out in the mode of volume to volume.
Compared with prior art, the invention has the advantages that:
(1) by organic media, replace traditional inorganic medium, utilize step impression means strictly to control the thickness of organic dielectric layer, not only can realize different color collocation, can also obtain the color designing by pixelation red green blue tricolor exports, thereby obtain the colored thermoprint picture and text of high-contrast, to strengthen visual identity effect.
(2), by any one side or inner imprint nano ledge structure at organic dielectric layer, realize the multi-channel feature of picture and text or background; And the shown color difference of the change of incident light polarization state.
(3) do not using on the basis of ink, picture and text or background have phototropic feature, show different color within the scope of different angles.
(4) only semi-transparent semi-reflecting metallic film adopts outside slow sputter coating mode processes, and the type that is all-trans metallic diaphragm adopts thermal evaporation mode to make, and organic media coating nanometer coating method is made, and processing method is more efficient.The inorganic medium vacuum volume to volume plated film of take is example, only can reach the speed of approximately 5 ms/min, and the mode that adopts nanometer to be coated with obtains the organic dielectric layer of 100nm thickness, and coating speed can reach 50 ms/min-100 ms/min, and prouctiveness is high.
(5) this variable color blocking film can be realized colorize demonstration and the phototropic effect of picture and text on same substrate, even can realize other as color effects such as multichannels, and easy to identify, false proof degree is high; Without adopting color shifting ink, environmental protection; The production process that this scheme is relevant is few, and prouctiveness is high.It is false proof that this variable color blocking film not only can be used for card, can also, for printing industry, realize Novel oil-free ink print.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Variable color blocking film structural representation under Fig. 1 first embodiment of the invention.
Fig. 2 is the impression die head schematic diagram under this first embodiment.
Fig. 3 is background and chromatic zones spectrum under the first embodiment.
Fig. 4 is that under the first embodiment, background colour angular effect changes spectrum.
Fig. 5 is the variable color blocking film structural representation under second embodiment of the invention.
Fig. 6 is the variable color blocking film structural representation under third embodiment of the invention.
Fig. 7 is the variable color blocking film structural representation under four embodiment of the invention.
Fig. 8 is the impression die head schematic diagram using under the 4th embodiment.
Fig. 9 is blue or green under the 4th embodiment, pinkish red and yellow (CMY) three primary colors spectrum.
The spectrum schematic diagram of the above-mentioned yellow spectrum angular effect of Figure 10.
Variable color blocking film structural representation under Figure 11 fifth embodiment of the invention.
The impression die head schematic diagram of Figure 12 for using under the 5th embodiment.
Background area reflectance spectrum angular effect spectrogram under Figure 13 the 5th embodiment.
Figure 14 is perpendicular to the reflectance spectrum in Grating Modulation district in grating planar, under TM polarised light in the 5th embodiment.
Figure 15 is perpendicular to the reflectance spectrum in Grating Modulation district in grating planar, under TE polarised light in the 5th embodiment.
Figure 16 is the reflectance spectrum that is parallel to Grating Modulation district in grating planar, under TM polarised light in the 5th embodiment.
Figure 17 is the reflectance spectrum that is parallel to Grating Modulation district in grating planar, under TE polarised light in the 5th embodiment.
Figure 18 is a kind of mode of texturing of the 5th embodiment.
The specific embodiment
As described in background, existing blocking film, not only complex manufacturing technology, and color changeable effect is limited, cannot realize multiple color change interval, polarization variable color texts.
Therefore the present invention proposes a kind of new variable color blocking film and preparation method thereof, the volume to volume coating that this variable color gilding film is mainly answered by technique letter and coating process coordinate the imprint process of volume to volume, can on flow material, produce the Fabry-Perot-type cavity with color changeable effect, not only with low cost, and be applicable to extensive, large-area suitability for industrialized production.This variable color gilding film be take the resonance principle of Fabry-Perot-type cavity and is basis, by the Fabry-Perot-type cavity of design different wave length, reflects the light of corresponding color, realizes the expression of color.Due to when changing viewing angle, the resonant frequency in Fabry-Perot-type cavity can be moved, and makes gilding film of the present invention possess generation color changeable effect simultaneously.If in addition different Fabry-Perot-type cavities is designed to have one dimension or the two-dimensional grating of certain arrangement regulation, can also obtain the effect of polarization variable color, such as binary channels polarization variable color etc.Thereby make variable color gilding film of the present invention there is the abundant and design of variable color flexibly.
Below, in connection with the specific embodiment, variable color gilding film of the present invention and preparation method thereof is described in detail.
Embodiment mono-: the blocking film that has multiple color change interval on same substrate
Described in the present embodiment, variable color blocking film as shown in Figure 1, comprises basement membrane 10, release layer 11, semi-transparent semi-reflecting metal level 12, information medium layer 13, the type that is all-trans metal level 14 and PUR 15.Wherein information medium layer 13 be can flow organic media coating, two relative surface is covered by semi-transparent semi-reflecting metal level 12 and the type metal level 14 that is all-trans respectively, and be provided with the different step of multiple height (being four kinds of steps 131,132,133,134 shown in figure) from the crossing surface of type metal level 14 of being all-trans, and with the crossing surface of half-reflection and half-transmission metal level 12 be plane.Semi-transparent semi-reflecting metal level 12, information medium layer 13 and the type metal level 14 mechanics Fabry-Perot-type cavities that are all-trans, be subject to the impact of material nature and average information thickness of dielectric layers, and these Fabry-Perot-type cavities will carry out selective outgoing to the light of different frequency.And in the present invention, due to the impact of manufacture craft, conventionally material is all selected, therefore in order to obtain different color effects, to the control parameter of these Fabry-Perot-type cavities mainly with shoulder height---be that thickness between upper and lower double layer of metal determines.By when impressing these steps, the height of accurately controlling each step can obtain a kind of Fabry-Perot-type cavity of corresponding color.Usually, the thickness of Fabry-Perot-type cavity and the proportional relation of the corresponding relation of optical wavelength, thickness is larger, and the optical wavelength that forms resonance is longer.Such as step 131 place Fabry-Perot-type cavities have the thickest thickness (being the most surface of information medium layer 13), can elect the region at its place as background colour district, if the color that now this Fabry-Perot-type cavity is corresponding is red, entire pattern just has red background colour.Three kinds of steps 132,133 in addition and the color of 134 representatives have formed the main part of pattern, and the distribution of different steps meets the distribution of color of required image, thereby finally scrabbles up a complete image.While making this variable color blocking film, mainly comprise three large steps of making of the making of mould release membrance, the making of Fabry-Perot-type cavity and PUR.Wherein the making of Fabry-Perot-type cavity comprises again the making of half-reflection and half-transmission metal level, the making of information medium layer, the making of the making of step and the metal level that is all-trans.Wherein basement membrane is chosen as to flexible material, the coating process of each layer and the imprint process of step can select the mode of volume to volume to carry out like this, not only can greatly enhance productivity, and be applicable to the material of large format.In different structures, the sequencing of above-mentioned several steps may be different, but overall invention thinking and the effect of generation are the same.
Particularly, in the present embodiment, half-reflection and half-transmission metal level 12 can be the Cr film of 0.006 micron thickness, and information medium layer 13 is organic media PMMA, and the metal level 14 that is all-trans is the Al film of 0.03 micron thickness.When making present embodiment variable color gilding film, first the mode being coated with by nanometer is made release layer 11 on basement membrane 10, then on release layer 11, successively pass through the Cr film of volume to volume vacuum sputtering coating 0.006 micron thickness, the PMMA of volume to volume nanometer coating plating 0.19 micron thickness, utilize impression die head as described in Figure 2, many steps imprint process with micron pixel, the sub-mixing application that prints technique or multiple combination pattern imprint process of the mixing of nanostructured under micron pixel, in three kinds of different step degree of depth of PMMA surface volume to volume nano impression, make the distance of step and PMMA lower surface be respectively 0.13 micron, 0.15 micron and 0.17 micron, then utilize hot evaporation process to plate the aluminium film of 30 nanometers, finally on aluminium film, be coated with one deck PUR, thereby on same basement membrane, obtain different-thickness step: the step 131 at place, information medium layer surface is defined as to background area (14-131-13-12), other three lower than surperficial step (132, 133, 134) zone definitions at place is three kinds of chromatic zones (14-132-13-12, 14-133-13-12 and 14-134-13-12), the corresponding color spectrum of background and chromatic zones as shown in Figure 3, wherein 0.13, 0.15, 0.17, article 0.19 four, curve has represented respectively four step spectral positions, wave band corresponding to the curve of spectrum that therefrom can find out these four steps is respectively red, green, bluish-green and blue, be that variable color blocking film feature under the present embodiment is: green under red background, bluish-green, Lan Sanse shows.
The red curve at 0.19 place of take is example, its spectral characteristic under different viewing angles, as shown in Figure 4, when when vertically observing to 60 degree directions, along with the increase of incident angle, reflectance spectrum center light spectral position blue shift, along with the increase of viewing angle, the reflection colour that the background of this blocking film and color region present changes to short wavelength's direction simultaneously, shows strong phototropic effect.
Embodiment bis-:
Described in the present embodiment, variable color blocking film as shown in Figure 5, comprises basement membrane 20, release layer 21, and information medium layer 23, semi-transparent semi-reflecting metal level 22, metal level 24 and PUR 25 are all-trans.Compare with embodiment mono-, in this embodiment, the step of information medium layer 23 is produced near on the surface of basement membrane 20, and these steps are covered by semi-transparent semi-reflecting metal level 22.But owing to being subject to the impact of production order between each tunic, need on mould release membrance 21, first make one deck information medium layer 23, then suppress ledge structure, again semi-transparent semi-reflecting metal level 22 is covered on step, so between semi-transparent semi-reflecting metal level 22 and release layer 21, have residual information medium layer 23 in this embodiment.Other manufacture craft and step are identical with enforcement one, do not repeat them here.
Embodiment tri-:
Described in the present embodiment, variable color blocking film as shown in Figure 6, comprises basement membrane 30, release layer 31, and information medium layer 33, semi-transparent semi-reflecting metal level 32, metal level 34 and PUR 35 are all-trans.In this embodiment, the step of information medium layer 23 is produced on inside, is covered by semi-transparent semi-reflecting metal level 32 simultaneously.During making, only need on the basis of embodiment bis-, the information medium layer of coating for the first time 23 height settings be become to be greater than pressure head maximum height, other manufacture craft and step are identical with enforcement two, do not repeat them here.
A kind of situation of easily being expanded by this embodiment is, the type metal level 34 that is all-trans can be covered on step, now, the order of making is: first nanometer coating release layer 31, on release layer 31, by volume to volume vacuum sputtering, make half-reflection and half-transmission metal level 32, on half-reflection and half-transmission metal level 32, be coated with for the first time information medium layer 33, utilize impression die head to produce various steps on this layer of information medium layer 33, on step, make the type metal level 34 that is all-trans, on the type metal level 34 that is all-trans, make again one deck information medium layer 33, finally make PUR 35.
Embodiment tetra-: pixelation variable color blocking film
Several embodiment simply make in membrane surface the region that represents different colours above, and the phenomenon of utilizing color to change with viewing angle reaches light and becomes visual effect, will introduce the embodiment of pixelation variable color blocking film below.Refer to Fig. 7, this variable color blocking film comprises basement membrane 40, release layer 41, and information medium layer 43, semi-transparent semi-reflecting metal level 42, metal level 44 and PUR 45 are all-trans.Wherein in information medium layer 43, be provided with the pixelation distribution step 431,432,433 of periodic arrangement, each step and upper and lower semi-transparent semi-reflecting metal level 42 and the metal level 44 forming method Fabry-Perot-type cavities that are all-trans, three kinds of Fabry-Perot-type cavity correspondences three kinds of base color.When needs show a width multicolour pattern, this pattern is carried out to pixelation processing by distribution of color and certain resolution ratio, the resolution sizes here preferably can be corresponding with the width dimensions of each step.After obtaining the color of each pixel, by controlling the width dimensions of three kinds of steps, three kinds of light ratio modulates color that make to reflect away and the solid colour of respective pixel.
Particularly, half-reflection and half-transmission metal level 42 is the Ag film of 0.025 micron thickness, and information medium layer 43 is organic media PMMA, and the type that is all-trans metal level 44 is the Al film of 0.03 micron thickness.During making, by nanometer, be coated with release layer 41, the Ag film of volume to volume vacuum sputtering coating 0.025 micron thickness, nanometer is coated with the PMMA medium of 0.17 micron thickness, the impression die head of utilization as described in accompanying drawing 8, in three kinds of different step degree of depth of PMMA surface imprint, then utilize the aluminium film of 0.03 micron of hot evaporation coating technique plating, last nanometer coating one deck PUR 45, thereby on same basement membrane, obtain different depth areas: three kinds of chromatic zoneses 431, 432 and 433(44-431-43-42, 44-432-43-42 and 44-433-43-42), the corresponding color spectrum of chromatic zones as shown in Figure 9, wherein curve 0.1, 0.14, 0.17 has represented the thickness of three steps, its place Curves is respectively blue or green (C) at spectrum, pinkish red (M), yellow (Y) three primary colors, can adopt three primary colors in the present embodiment as sub-pix, utilize two or more sub-pixs, the customization that realizes color shows, thereby the colorize pattern of realizing variable color blocking film shows.
Take yellow as example, its spectral characteristic under different viewing angles, as shown in Figure 10, when when vertically observing to 60 degree directions, along with the increase of incident angle, reflectance spectrum center light spectral position blue shift, along with the increase of viewing angle, the color of this blocking film changes to short wavelength's direction, shows strong phototropic effect.
Certainly in this embodiment, also step can be produced on to another surface or middle, what on step, cover can be also semi-transparent semi-reflecting metal level.
Embodiment five: the variable color blocking film of Grating Modulation
Described in the present embodiment, variable color blocking film as shown in Figure 11, comprises basement membrane 50, release layer 51, and semi-transparent semi-reflecting metal level 52, information medium layer 53, be all-trans metal level 54 and PUR 55, information medium layer 52 is provided with step 531,532 and grating region 533.
In embodiment 5, 12 is the Ni film of 0.008 micron thickness, 13 is organic media PMMA, 14 while being the Al film of 0.03 micron thickness, by nanometer, be coated with release layer 11, the Ni film of volume to volume vacuum sputtering coating 0.08 micron thickness, nanometer is coated with the PMMA medium of 0.45 micron thickness, die head (grating cycle 0.25 micron) the imprint nano grating of utilization as described in accompanying drawing 12, recycle the aluminium film of 0.03 micron of hot evaporation coating technique plating, last nanometer coating one deck PUR 15, thereby on same basement membrane, obtain different depth areas: background area (14-431-13-12) and Grating Modulation district (434-13-12), the reflectance spectrum of background area as shown in Figure 13, Grating Modulation district is in the plane perpendicular to grating grid, reflectance spectrum under TM and TE polarization is as accompanying drawing 14, shown in 15, Grating Modulation district is within being parallel to the plane of grating grid, reflectance spectrum under TM and TE polarization is as accompanying drawing 16, shown in 17.
As shown in Figure 13, along with the increase of viewing angle, background area reflectance spectrum color is offset by purple-green-blue or green direction.
As shown in accompanying drawing 14,15, along with the increase of viewing angle, in the plane perpendicular to grating grid, under TM polarised light, reflectance spectrum color is offset to shortwave direction; Under TE polarization, reverberation color is offset to shortwave direction; Under same viewing angle, the reflectance spectrum color under TM, TE polarised light is different, shows obvious polarization selectivity.
As shown in accompanying drawing 16,17, along with the increase of viewing angle, within being parallel to the plane of grating grid, under TM polarised light, reflectance spectrum color is offset to shortwave direction from red; Under TE polarization, reverberation color is offset to shortwave direction from green; Under same viewing angle, the reflectance spectrum color under TM, TE polarised light is different, shows obvious polarization selectivity.
As shown in accompanying drawing 14,16, in the situation that viewing angle, polarization characteristic are identical, the color that the reflectance spectrum in the sightingpiston of parallel, vertical raster grid line presents is different, shows obvious binary channels characteristic.
Utilize this characteristic, the grating these to polarization variable color is compressed on gilding film by the distribution of shapes of figure.Such as making the figure of a Great Wall shape, when obtaining this figure from first viewing angle, can see that the color of figure, for yellow, change 90 and spends while observing again, just likely see blue Great Wall figure.
Described in this embodiment, variable color blocking film also can be produced on information medium layer the inside by step as shown in Figure 18, and the reflectance spectrum effect in the variable color blocking film Jin You Grating Modulation district of formation, does not exist background colour.
In above-mentioned each embodiment, the numbers of steps of enumerating is only a kind of schematic explanation, in practical application, can select a greater variety of shoulder heights, completely the complexity of view case and determining.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (13)
1. a variable color gilding film, it is characterized in that: comprise basement membrane, release layer, semi-transparent semi-reflecting metal level, information medium layer, the type that is all-trans metal level and hot melt adhesive layer, described information medium layer be can flow organic media coating, its at least one surface or the inner different step of multiple height that is provided with, on described step by described semi-transparent semi-reflecting metal level or described in a kind of covering of being all-trans in type metal level, and another surface relative with step by described semi-transparent semi-reflecting metal level or described in the another kind that is all-trans in type metal level cover, described semi-transparent semi-reflecting metal level, information medium layer and the type metal level mechanics Fabry-Perot-type cavity that is all-trans, the Fabry-Perot-type cavity of the corresponding a kind of color of height of each step.
2. variable color gilding film as claimed in claim 1, is characterized in that: described semi-transparent semi-reflecting metal level and the type metal level that is all-trans are separately positioned on two surfaces of described information medium layer.
3. variable color gilding film as claimed in claim 2, is characterized in that: a surface in two surface of described information medium layer is provided with the different step of multiple height, and another surface is plane.
4. variable color gilding film as claimed in claim 2, is characterized in that: described semi-transparent semi-reflecting metal level is connected with described release layer simultaneously, described in type metal film while of being all-trans be connected with described hot melt adhesive layer.
5. variable color gilding film as claimed in claim 1, it is characterized in that: described semi-transparent semi-reflecting metal level is arranged at the inside of described information medium layer, the described type metal level that is all-trans is arranged on the surface that described information medium layer is relative with described step, and is connected with described hot melt adhesive layer simultaneously.
6. variable color gilding film as claimed in claim 5, is characterized in that: two surfaces of described information medium layer are plane, and wherein another surface relative with being provided with the type layer on surface of metal that is all-trans is connected with described release layer.
7. variable color gilding film as claimed in claim 1, it is characterized in that: described in the type metal level that is all-trans be arranged at the inside of described information medium layer, described semi-transparent semi-reflecting metal level is arranged on the surface that described information medium layer is relative with described step, and is connected with described release layer simultaneously.
8. variable color gilding film as claimed in claim 7, is characterized in that: two surfaces of described information medium layer are plane, and wherein another surface relative with being provided with semi-transparent semi-reflecting layer on surface of metal is connected with described hot melt adhesive layer.
9. the variable color gilding film as described in claim 1-8 any one, is characterized in that: described multiple differing heights step is by the distribution of color of required image, or by the shape of required figure, is made into the grating with polarization variable color.
10. a variable color gilding film manufacture method as claimed in claim 1, it is characterized in that: be included in the step of making release layer on basement membrane, on release layer, make the step of the Fabry-Perot-type cavity of multiple different-thickness, and the step of making hot melt adhesive layer on Fabry-Perot-type cavity, the making of described Fabry-Perot-type cavity comprises the making of half-reflection and half-transmission metal level, the making of information medium layer, the making of the impression of step and the type metal level that is all-trans.
11. variable color gilding film manufacture methods as claimed in claim 10, is characterized in that: described basement membrane is flexible material, the coating process of described each layer and the imprint process of step carry out in the mode of volume to volume.
12. variable color gilding film manufacture methods as claimed in claim 10, it is characterized in that: described release layer and information medium layer are used nanometer coating process to make, described half-reflection and half-transmission metal level adopts volume to volume vacuum sputtering coating technique to make, described information medium layer adopts nanometer coating process to make, described in the type metal level that is all-trans adopt hot evaporation process to make.
13. variable color gilding film manufacture methods as claimed in claim 10, is characterized in that: the imprint process of described step comprises the mixing imprint process of nanostructured and the mixing of multiple combination pattern imprint process application under many steps imprint process, micron pixel of micron pixel.
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| CN109291673A (en) * | 2018-09-25 | 2019-02-01 | 武汉华工图像技术开发有限公司 | A kind of patterning holographic false proof device and preparation method thereof accurately aluminized |
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| CN112606588A (en) * | 2021-01-17 | 2021-04-06 | 彭亮 | Optical color-changing gold stamping material |
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Address after: 215123 No. 199 benevolence Road, Suzhou Industrial Park, Jiangsu, China Co-patentee after: SUZHOU SUDAVIG SCIENCE AND TECHNOLOGY GROUP Co.,Ltd. Patentee after: Suzhou University Address before: 215123 No. 199 benevolence Road, Suzhou Industrial Park, Jiangsu, China Co-patentee before: SVG OPTRONICS, Co.,Ltd. Patentee before: Suzhou University |