CN103407305A - Random pattern plastic money substrate and preparation method thereof - Google Patents

Random pattern plastic money substrate and preparation method thereof Download PDF

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Publication number
CN103407305A
CN103407305A CN2013103786204A CN201310378620A CN103407305A CN 103407305 A CN103407305 A CN 103407305A CN 2013103786204 A CN2013103786204 A CN 2013103786204A CN 201310378620 A CN201310378620 A CN 201310378620A CN 103407305 A CN103407305 A CN 103407305A
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film
random
cutting
pattern
cylinder
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CN103407305B (en
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夏河年
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夏河年
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D25/00Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29Securities; Bank notes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B42BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42DBOOKS; 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
    • B42D2033/00Structure or construction of identity, credit, cheque or like information-bearing cards
    • B42D2033/30Plastic material

Abstract

The invention relates to the anti-fake field, and particularly to a random pattern plastic money substrate and a preparation method thereof. The random pattern plastic money substrate has random patterns which are formed by hot-pressing and sticking random shapes and strip structures in random colors. The preparation method comprises the steps of: laminating a plurality of high polymer material films in random color distribution with a plurality of high polymer material films in the natural color via a set lamination way so as to obtain a film layer collection; coiling the film layer collection into cylinders; binding the multiple cylinders into a cylinder-similar body; heating the cylinder-similar body to the glass transition temperature of the high polymer material, and extruding and kneading so as to increase the length and reduce the area of the cross section to a preset value; processing the extruded and kneaded cylinder-similar body into a rectangular prism through hot-pressing; cutting the rectangular prism in a manner of a set angle and a set interval to obtain a quadrate film; carrying out colorless image-text hot pressing for the quadrate film through a hot pressing template so as to obtain the random pattern plastic money substrate. The random pattern plastic money substrate and the preparation method thereof can realize the anti-fake effect that cannot be duplicated.

Description

Random pattern is moulded paper money substrate and preparation method thereof
Technical field
The present invention relates to false proof field, mould paper money substrate and preparation method thereof in particular to random pattern.
Background technology
Up to now, all banknotes, need only version identical with denomination in the world, and picture and text are just the same, the just number changed, picture and text above banknote all print, and the picture and text precision can not break through the restriction of print principle, make banknote likely be utilized the especially modern digital printing equipment of similar typography imitated, this has just given the fake producer with opportunity, putting things right once and for all of this what is called " copy one day, continued to employ 10000 years ", " input-output ratio " is very high.
Summary of the invention
The object of the present invention is to provide a kind of random pattern to mould paper money substrate and preparation method thereof, to address the above problem.
The embodiment of the present invention provides a kind of random pattern to mould the paper money substrate, and pattern is random, and described pattern is formed by some randomly shaped and linear heat pressure adhesives random color.
The embodiment of the present invention also provides a kind of described random pattern to mould the preparation method of paper money substrate, comprising:
To set stacked system, the macromolecule material film of the macromolecule material film of several color random distribution and several true qualities is superposeed and obtains the thin layer set;
Described thin layer set is rolled into to cylinder;
A plurality of described cylinders are carried out to parallel stacking and use the macromolecule material film of same material or cordage to be tied to the class cylinder;
Described class cylinder is heated to the vitrification point of described macromolecular material and adopts mechanical force to push and rub described class cylinder, make it to become the cylindrical structure that cross-sectional area is larger, continue to rub so that the length of this cylindrical structure increases, cross-sectional area is contracted to preset value;
Described class cylinder after will pushing and rub by hot pressing is processed into rectangular post;
With set angle and the described rectangular post of setting interval cutting, obtain square film;
By hot pressing template, described square film is carried out to colourless picture and text hot pressing, obtain described random pattern and mould the paper money substrate.
The random pattern that the embodiment of the present invention provides is moulded paper money substrate and preparation method thereof, can reach following beneficial effect:
A kind of random pattern is moulded the paper money substrate, pattern is random, pattern is to be formed by numerous randomly shaped and linear heat pressure adhesives random color, linear is stereochemical structure, after heat pressure adhesive, still form stereochemical structure, tow sides are in full accord and accurate correspondence in appearance, again because linear is randomly shaped and random color, thereby the pattern that random pattern is moulded in the paper money substrate has randomness, can't accurately be copied and be copied.The tow sides details is all accurately different and because rubbing the meticulous lines of bringing up to every the pattern printed, random pattern causes, make random pattern mould the on-chip pattern of paper money and can not be printed the means imitation, can not utilize the technique identical with this case to copy out another identical pattern.For the random pattern of bringing up this version is moulded the paper money substrate, in the preparation method, at first the macromolecule material film of the macromolecule material film of color random distribution and true qualities is superposeed, be rolled into cylinder, a plurality of cylinders are bundled into to the class cylinder, and at a certain temperature the class cylinder is pushed and rubs, make into cylindrical structure.Continue to rub, cylindrical length increases, and cross-sectional diameter reduces gradually, and the cross sectional pattern lines are subtilized, the fineness that a considerable amount of lines fineness can be reached far beyond printing means.Pattern on the cylinder cross section also changes in rubbing, some groups of helical pattern on cylindrical cross section gradually become some groups of irregular groups and spend, the formation that irregular group spends is the result that mechanical force is rubbed, the microinhomogeneities of pressure adds the inhomogeneities of the group's fancy rule width on out of contior microcosmic disturbance meeting aggravation cross section and the uncertainty of color, this lines can not accurately be scanned, at first it be embodied in same line thickness can the even wider variation of variation from hundreds of nanometers to tens nanometers, line thickness has gradual change that sudden change is also arranged, modern scanning technique and printing technology be this lines of reproducible not, next is presented as on same lines may the nearly natural transition of tens kinds of colors, and modern color separation technology and printing technology fall down on this lines, have again, because being the film of cutting, substrate forms, pattern on film cuts out, the pattern on film two sides is accurately corresponding, this accurate corresponding effect can utilize naked eyes to judge x ray fluoroscopy x easily, and, because color and the lines of whole substrate are that two sides is accurately corresponding entirely, in any case modern printing technology is not all accomplished this point, that is to say and can not fake by printing means.
The accompanying drawing explanation
Fig. 1 is that the macromolecule material film of the macromolecule material film of color random distribution and true qualities is rolled into parallel stacking after cylinder, is bundled into the cylindrical cross sectional representation of class;
Fig. 2 becomes the cross sectional representation of the cylindrical structure that cross-sectional area is larger after the class cylinder is rubbed.
The specific embodiment
Below by specific embodiment, the present invention is described in further detail.
The embodiment of the present invention provides a kind of random pattern to mould the paper money substrate, and pattern is random, and described pattern is formed by some randomly shaped and linear heat pressure adhesives random color.
The embodiment of the present invention also provides a kind of described random pattern to mould the preparation method of paper money substrate, comprising:
To set stacked system, the macromolecule material film of the macromolecule material film of several color random distribution and several true qualities is superposeed and obtains the thin layer set;
Described thin layer set is rolled into to cylinder;
A plurality of described cylinders are carried out to parallel stacking and use the macromolecule material film of same material or cordage to be tied to the class cylinder;
Described class cylinder is heated to the vitrification point of described macromolecular material and adopts mechanical force to push and rub described class cylinder, make it to become the cylindrical structure that cross-sectional area is larger, continue to rub so that the length of this cylindrical structure increases, cross-sectional area is contracted to preset value;
Described class cylinder after will pushing and rub by hot pressing is processed into rectangular post;
With set angle and the described rectangular post of setting interval cutting, obtain square film;
By hot pressing template, described square film is carried out to colourless picture and text hot pressing, obtain described random pattern and mould the paper money substrate.
A kind of random pattern is moulded the paper money substrate, pattern is random, pattern is to be formed by some randomly shaped and linear heat pressure adhesives random color, linear is stereochemical structure, after heat pressure adhesive, still form stereochemical structure, tow sides are in full accord and accurate correspondence in appearance, again because linear is randomly shaped and random color, thereby the pattern that random pattern is moulded in the paper money substrate has randomness, can't accurately be copied and be copied.The tow sides details is all accurately different and because rubbing the meticulous lines of bringing up to every the pattern printed, random pattern causes, make random pattern mould the on-chip pattern of paper money and can not be printed the means imitation, can not utilize the technique identical with this case to copy out another identical pattern.For the random pattern of bringing up this version is moulded the paper money substrate, in the preparation method, at first the macromolecule material film of the macromolecule material film of some color random distribution and some true qualities is superposeed, be rolled into cylinder, a plurality of cylinders are bundled into to the class cylinder, and at a certain temperature the class cylinder is rubbed, pushed, make into cylindrical structure.Continue to rub, cylindrical length increases, and cross-sectional diameter reduces gradually, and the cross sectional pattern lines are subtilized, the fineness that a considerable amount of lines fineness can be reached far beyond printing means.Pattern on the cylinder cross section also changes in rubbing, some groups of helical pattern on cylindrical cross section gradually become some groups of irregular groups and spend, the formation that irregular group spends is the result that mechanical force is rubbed, the microinhomogeneities of pressure adds the inhomogeneities of the group's fancy rule width on out of contior microcosmic disturbance meeting aggravation cross section and the uncertainty of color, this lines can not accurately be scanned, at first it be embodied in same line thickness can the even wider variation of variation from hundreds of nanometers to tens nanometers, line thickness has gradual change that sudden change is also arranged, modern scanning technique and printing technology be this lines of reproducible not, next is presented as on same lines may the nearly natural transition of tens kinds of colors, and modern color separation technology and printing technology fall down on this lines, have again, because the pattern on film cuts out, the pattern on film two sides is accurately corresponding, this accurate corresponding effect can utilize naked eyes to judge x ray fluoroscopy x easily, and because color and the lines of whole substrate are that two sides is accurately corresponding entirely, in any case modern printing technology is not all accomplished this point, that is to say and can not fake by printing means.
The random pattern that the embodiment of the present invention provides is moulded the paper money substrate, and its every pattern is all random, there is no two identical random patterns.Pattern mainly and group random color randomly shaped by many groups is spent and is formed.The pattern that identical denomination is moulded the paper money substrate is that tone is unified on macroscopic view, be convenient to the common people and intuitively distinguish denomination, and the uniqueness of pattern in detail can be by by moulding paper money pattern in kind and comparing from the local high definition file photo accessed central database by mobile phone or computer in hand, thereby allow the common people distinguish easily and accurately the true and false.
If the paper money of moulding that adopts the material identical with this case and technique to copy particular number, at first the color on individual colorful film is exactly random, secondly, colorful film and true qualities film can produce inevitable displacement while stacking, as long as small change in displacement is arranged, the cross section be rolled into after cylinder just there will be pattern difference very large on macroscopic view, and the process of rubbing subsequently, the microcosmic disturbance can not be accurately controlled, therefore, not singly that printing means can't be copied, adopt the material identical with genuine piece and identical technique can't successfully copy yet.The 3D printing technique is subject to the restriction of " ink droplet " diameter, and precision is also not by a long sight; " outline technology " during 3D prints on the contrary can avoid the restriction of " ink droplet " diameter, but this technology mainly is the large parts processing service, farther from imitated this fine pattern; The 3D printing technique so far, wretched insufficiency aspect color, and this substrate color is very abundant.In foreseeable future, as long as utilize digital technology imitated, just be unable to do without the problem of color separation, this on-chip color is the color that material object presents, and is not that digital equipment can accurately scan and accurately output.
It is mutually different random pattern that random pattern is moulded the on-chip pattern of paper money, there is no two identical random patterns.Pattern does not print, to obtain by the cylinder that cutting is rubbed after thin, the complexity of color change and the fineness of lines are far beyond the modern printing technology degree that can reach, therefore this random pattern can not copy by plate-making and printing technology, if adopt the technique identical with this case to copy, because uncontrollable microcosmic disturbance in the process of rubbing still can not obtain the random pattern the same with genuine piece, that is to say, this random pattern can not accurately be copied in foreseeable future, therefore this substrate can be for printing the paper money of moulding that anti-counterfeiting performance is had to special requirement, also can be for the antifalsification label of high-grade goods (both material differences and manufacturing process is similar).
If this random pattern is moulded to the paper money substrate, mould paper money for printing, after moulding paper money and having printed, will have a local high definition photo in kind to be archived in central database.Each background patterns of moulding paper money is all unique, and the relative position of random pattern and the colourless picture and text of hot pressing is also unique, and material object is identical with the file photo is genuine notes, otherwise is exactly counterfeit money.If there is the lawless person to throw in counterfeit money to market, some people can distinguish the true and false by feel, very near, if do not possess this feel, to x ray fluoroscopy x, what double-edged background patterns was can not be accurately corresponding can directly be judged to be counterfeit money, if also have a question, with mobile phone or computer access file photo in central database compare with it just perfectly clear, convenient and reliable.
Central data base system can carry out intelligent monitoring to the enquiry frequency of duplicate numbers, and certain enquiry frequency of moulding the paper money number is abnormal in case find, can lock general orientation soon, for the public takes precautions against and police reconnaissance provides valuable data.Several are moulded the paper money material object with number if find, directly the banknote of this number has completely been cancelled exactly, namely from central database, deleting the correspondence file photo of this number, someone takes the counterfeit money of this number again, he can not be from finding the file photo of this number database, can directly regard as counterfeit money, thereby make counterfeit money not come into the market in a large number, it is nonsensical only putting goods on the market several limited counterfeit money to the counterfeit money producer, unique genuine notes can arrive bank and exchange the genuine notes of other number (counterfeit money that how high fidelity is is all deceived the only professional person of bank).Therefore, the paper money of moulding that utilizes random pattern to mould the printing of paper money substrate can not successfully be copied in foreseeable future, if someone manufactures counterfeit money, at first just do not cross this pass of general public, because computer and smart mobile phone are very universal, the file photo of having access to central database is very convenient, and intelligent monitor system can allow " high emulation " counterfeit money cause the panic possibility of society and reduce to zero.
This random pattern is moulded the paper money substrate and be can be used for making and mould paper money, also can be used for making antifalsification label etc., if as antifalsification label, the mechanical property requirements of material is poor, namely take off destroyedly, antifalsification label can not be turned to note and locate to it, production technology and discrimination means are basic identical.
Next, the present invention will be take making and be moulded paper money and be example, and wherein macromolecular material adopts ultra-high molecular weight polyethylene to illustrate the preparation of moulding the paper money substrate.
Step 101, make the ultra-high molecular weight polyethylene film of color random distribution;
Inorganic color and Ultra high molecular weight polyethylene particles are mixed with into to the ultra-high molecular weight polyethylene film of color random distribution.
Ultra-high molecular weight polyethylene has following advantage: 1, outstanding shock resistance and anti-cutting toughness, and this performance makes it surmount Kev and pulls into the main flow material into current making flak jackets; 2, superpower wear-resisting resistance to bend(ing) energy and stronger tension force fatigue behaviour; 3, good chemical inertness, be not subjected to the impact of strong acid and strong base solution and OOS; 4, fabulous weatherability and bearing dirty property; 5, when liquid helium temperature (269 ℃), still be ductile, high and low temperature resistance all is better than the external polypropylene of moulding paper money of making;
Addition that can be by regulating inorganic color, inorganic color and the situation of mixing of ultra-high molecular weight polyethylene prepare the random ultra-high molecular weight polyethylene film of color of required tone.Identical denomination mould the paper money substrate, macroscopical tone is unified.
Step 102, the ultra-high molecular weight polyethylene film of preparation true qualities;
Ultra high molecular weight polyethylene particles is mixed with into to the ultra high molecular weight polyethylene films that does not contain colorant.
Step 103, superpose the ultra-high molecular weight polyethylene film of the ultra-high molecular weight polyethylene film of some color random distribution and some true qualities to obtain the set of ultra-high molecular weight polyethylene thin layer to set stacked system;
The order that stacks of the ultra-high molecular weight polyethylene film of random distribution and true qualities ultra-high molecular weight polyethylene film does not strictly limit, during the colored random film of preparation, controlling the total input ratio of various colorants can obtain the substrate that the identical macroscopical tone of denomination is unified (such as 100 yuan of paper money macroscopic view mass-tones are adjusted to simple and elegant Chinese red, 50 yuan of paper money are simple and elegant iron oxide red, etc.).In the present embodiment, adopt the mode of a color random distribution ultra-high molecular weight polyethylene film and the alternate stack of an anticipatory remark look ultra-high molecular weight polyethylene film, the true qualities ultra-high molecular weight polyethylene film state that is translucent, judge when so stack is convenient to x ray fluoroscopy x whether double-edged pattern is accurately corresponding.On-chip random picture and text cut out, very thin, and double-edged pattern in detail will be accurately corresponding, to the seal technology, can not reach this corresponding precision in printing, accurately correspondence can directly be judged to be counterfeit money, need not take remaining discrimination means.
Step 104, be rolled into cylinder by the thin layer set;
On cylinder cross section after rolling, contain the helicoidal structure that the random lines of numerous colors form; Helicoidal structure is mainly alternately formed by translucent and opaque colored lines.Why adding " mainly ", is because on the ultra-high molecular weight polyethylene film of color random distribution, also there are some there is no the place of dyeing, and this part be true qualities the same as true qualities ultra-high molecular weight polyethylene film are namely translucent.Translucent lines on two films likely run into together, and even to run into be also together possible to 3 translucent lines.Whether accurately the light transmission capacity of colourless lines is larger, and inorganic color has light-proofness, be convenient to observe double-edged pattern in detail correspondence.In general same lines have translucently also has opaquely, and may consist of a variety of colors.Number of colours on same lines of the described random color lines of this case is likely the doubly a lot of of the existing printing technology number of colours that can connect.Whole of some lines are all translucent (not adding the film of any colorant).In processing procedure afterwards, random variation all occurs in the CF of the lines in constantly pushing, rubbing process of the lines on each cross section.
Step 105, be tied to the class cylinder by the cylinder of a plurality of parallel stackings;
By the parallel stacking of a plurality of cylinders, as Fig. 1, shown in, then after using the macromolecule material film of same material or cordage to tie up, become the class cylinder, in the class cylinder, each cylindrical cross section forms helicoidal structure by lines and the material true qualities lines of color complexity, and these helicoidal structures are the turn agglomerate flower in follow-up extruding and in rubbing process.The single line bar of group's flower may be colourless also may consisting of several or tens of kinds of colors, and the width of same lines may not wait from the micron order to the nanoscale, and wide variety has gradual change that sudden change is also arranged, as the description of step 104.
Step 106, the class cylinder is heated to the vitrification point of ultra-high molecular weight polyethylene and adopts mechanical force to push and rub the class cylinder, so that the class cylinder becomes cylindrical structure, continue to rub this cylindrical structure, as Fig. 2, shown in, when length is elongated, cross-sectional area is contracted to preset value gradually, wherein, the setting means of preset value can adopt following principle: the pattern on cross section is gradually complicated and meticulous, until the limit that on cross section, a considerable amount of lines fine degree can reach far beyond modern times printing level;
Concrete operations:
The class cylinder is heated to the vitrification point of ultra-high molecular weight polyethylene film, and adopts mechanical force to push and rub to closely knit the class cylinder.Continue heating and make it fusing (more than 300 ℃), continue to rub, make the strand of part ultra-high molecular weight polyethylene remove winding, present and unfold state.This process is conducive to the physical property of elevating ultrahigh molecular weight polyethylene film.Keep molten condition approximately 30 minutes (25-35 minute), it is easier than under vitrification point, rubbing under molten condition, to rub; Be cooled to vitrification point, (180 ℃-200 ℃), rub cylinder by mechanical force, makes the pattern on cross section not only dwindle gradually but also occur more change at random.Printing group fancy rule is classical, effective false proof means, often utilizes the false proof group of special purpose computer software development to spend now.The group of computer photograph spends as vector graphics, advantage is to amplify to dwindle can not affect pattern quality, but complexity is not enough and color is simply its maximum weakness, the pattern printed, its precision always is limited by printing equipment, and printing equipment can not be broken through the constraint of related physics law.Group's floral pattern of moulding the paper money substrate in this case is that the material object of corresponding color forms, the complexity of lines shape and color and the fineness of lines are far beyond the modern printing level degree that can reach, this complexity and meticulous be by as on chopping board, rubbing flour, cross sectional pattern is dwindled and produce that uncontrollable microcosmic disturbance realizes, in foreseeable future, the lines of this color complexity formed in kind are that modern printing technology can not be copied in success.Front cross-sectional area is big does not have the theoretical upper limit because cylinder is rubbed, so the fine degree of group's fancy rule can arrive needed any degree.
Ultra-high molecular weight polyethylene under molten condition still lacks mobility, can not make the pattern on cross section become chaos state, but can deform by rubbing of mechanical force, and the cylinder cross-sectional area is dwindled, and pattern is more and more meticulousr.Molten condition originally will make the strand of part ultra-high molecular weight polyethylene remove and be wound around, and cylinder is rubbed long process with the hands also can make interior molecules be tending towards in order, and all the mechanical property to finished product is beneficial for these.But the molten condition overlong time can cause the part ultra-high molecular weight polyethylene to decompose, material property is had a negative impact, therefore molten condition maintained about 30 minutes, will be cooled to vitrification point, this is one and can cause decomposing but can rub the temperature that changes shape by mechanical force.Ultra-high molecular weight polyethylene is the thermoplasticity material, sufficient time rubbing is arranged to suitable cross-sectional area under vitrification point, in addition, owing to being thermoplastic, is beneficial to recycling, and product has the feature of environmental protection.Because initial cylinder volume is huge, add the ultra-high molecular weight polyethylene difficult forming, thereby need the equipment of rubbing of high-power and ultra-large volume.Print paper money factory and do not abstain from this, the special taboo of fake producer can not be hided and be manufactured furtively counterfeit money in a corner.Even if the equipment of rubbing does not need very high technology content, itself just means the huge of initial input the volume of its super large, and the fraud molecule is abstained from especially to this.If material is other macromolecular material, to the control of temperature, should determine according to concrete material physicochemical property, such as " keeping molten condition approximately 30 minutes " is just likely optional.
Step 107, the class cylinder after will pushing and rub by hot pressing is processed into rectangular post;
Concrete operation method is: the class cylinder that will rub after attenuating is put into elongated rectangular recess; The heating rectangular recess; To make it to become cross section be foursquare rectangular to being in rectangular recess the cylinder compacting of rubbing after attenuating while hot, fixing and cooling and shaping.
Step 108, with knife face and rectangular post axially between 45 degree angles and set the interval rectangular post of cutting and obtain medium thin film.
So-called " thickness is suitable ", refer to the design thickness of moulding paper money.Design thickness also can be understood as the setting interval in when cutting, sets interval and take the setting thickness that random pattern moulds the paper money substrate and be foundation, and the factor that determines the film thickness cut also comprises the final use of material and substrate.If this substrate is the substrate of moulding paper money as printing, material should possess good physical property, especially mechanical property; If substrate is as printing antifalsification label use, it is good that material used should be weatherability, destroyed be advisable of mechanical property to take off, and film thickness is also mainly on this basis.The thickness of hundred yuan of bills of RMB is 0.1 millimeter, external take bidirectional stretching polypropylene film and mould paper money thickness less than 0.1 millimeter as material, the mechanical property of ultra-high molecular weight polyethylene film is more much better than than polypropylene film, can do thinlyyer, both facilitated the common people to carry, and can also reduce and mould the paper money issuing cost.The lines that the colourless picture and text convexity of hot pressing arises from plane are equivalent to add crisscross rib to the very thin paper money substrate of moulding, though make it thin, suitable well-pressed degree is arranged, and are convenient to utilize the preliminary discrimination of feel and counting.
Tangent plane axial vertical with rectangular post not why, because rub in the process attenuated at the class cylinder, the interior molecules chain tends to arrange along its length, lines microstructure on cross section is also like this, it is all the process that is tending towards orderly, the macromolecular material interior molecules, from chaos in order, often means the optimization of mechanical property.The cutting angle of non-90 degree makes the change of the square film colored lines relative position when follow-up hot-pressing processing that cuts gained less, such as, if pattern element is a point, moulding the on-chip microscopic pattern of paper money, be exactly " Shu ", this perpendicular done vertical hot pressing and will make " Shu " to become " I ", the substrate pattern quality is had a negative impact.Angle of inclination hot pressing can also additionally increase the mechanical property of square film, because rub under vitrification point, likely produces some relatively loose structures, and miter angle is vertically cut to the vertical hot pressing of the film got off, and can make loose structure become compact texture.At cylinder, rub with the hands in long process (in other words in the process that cross-sectional area dwindles), under perfect condition, pattern from macroscopic view can roughly be interpreted as be scaled (in fact the distortion very large, because force-bearing situation can not reach perfect condition), on microcosmic, there will be uncertain disturbance, very favourable to moulding the paper money substrate---should facilitate the common people to compare pattern, allow again complexity and fine degree that the fake producer cannot be copied.
The square film area is slightly larger than each printing justifying banknote number sum, and (the wholesale paper money of take is example, suppose 24 banknotes of every edition printing, area should be greater than this 24 banknote area sums, because make allowances for the banknote trimming of outermost), the calculating of taking this as a foundation of the cross-sectional area of rectangular recess.
Step 109, the setting cutting number of times of take is stacked as circulating unit carries out two groups of circulations to square film;
The stacking mode of two groups of circulation stackings is: the square film that cutting for the first time obtains lies against first group; The square film that cutting for the second time obtains is put in second group; For the third time the square film that obtains of cutting its planar after its center 90-degree rotation, be positioned over above the square film that cutting obtains for the second time; The 4th square film of obtaining of cutting its planar after its center Rotate 180 degree, be positioned over above the square film that cutting obtains for the third time; The 5th square film that obtain of cutting planar is placed in the 4th time in its institute and cuts above the square film obtained after its central rotation 270 degree; The 6th square film of obtaining of cutting its planar after its center 90-degree rotation, be positioned over above the square film that cutting obtains for the first time; The square film that the 7th cutting obtains planar is positioned over the 6th time above film at it after its center Rotate 180 degree; The square film that the 8th cutting obtains planar is positioned over the 7th time above square film in its institute after its central rotation 270 degree.So far just completed circulation the other side cycle, that is to say the 9th no longer rotation, be placed directly in above the film of the 8th cutting, the stacking of so cutting and circulate, until the cutting of rectangular post is complete;
The mode that adopts so circulation to stack, mainly to consider that one of described film main application that contains random pattern is as printing, to mould the substrate of paper money, affiliated mode of stacking is the similarity of discrete adjacent random pattern to greatest extent, be convenient to from the high definition file photo that central database accesses, compare with utilizing mobile phone or computer by moulding paper money background patterns in kind, thereby allow the true and false that general public is convenient, distinguish reliably banknote.The random pattern of 7 square films of being separated by between each upper and lower two of described square film of group changes, and that is to say that adjacent similarity of moulding paper money substrate random pattern is discrete to greatest extent.The described square film of this two heap respectively can be used to printing the paper money of moulding of two kinds of denominations of size, and each Zhang Suoshu pros moulds the paper money substrate can print several rectangular plastic paper money.
Step 110, carry out hot-pressing processing by hot pressing template to the square film cut, and obtains printing the substrate of moulding paper money;
Hot pressing template is two carbide alloy boards, and the opposite face of two carbide alloy boards is cast with fine and closely woven texture, pattern and word.Hot-pressing processing can form the colourless picture and text of hot pressing on square film, purpose is: 1, in the situation that reduce thickness, keep enough deflections (this effect gives the credit to the crest line that hot pressing produces), also be convenient to counting; 2, fixing feel.Because every although to mould the paper money background patterns be mutually different random pattern, the colourless picture and text of the hot pressing on it are identical, thus facilitate the common people with feel as preliminary discrimination means; 3, the colourless picture and text of hot pressing provide extra convenience for the blind person identifies the banknote denomination; 4, the accurate colourless picture and text of hot pressing itself are one effective false proof means.As can be known by the hot pressing template manufacturing process, its technological principle with mould the paper money substrate and come down in a continuous line, picture and text on template also can not accurately be copied, and the bullion and silver of initial procedure flood tide input allows general fake producer forbidding especially, although those gold and silver are the intermediary that hot pressing template is manufactured, first must there is huge gold and silver to drop into.Bullion and silver has extremely good ductility, can meet actual required any minification.Certainly, because the gold and silver pattern also has the process attenuated of rubbing, the microcosmic disturbance can not be accurately controlled, and uses same material and same technique still can not accurately copy hot pressing template, that is to say, by this technique, prepare colourless hot pressing template and can obtain the meticulousst template.The utilization of fraud molecule is moulded the paper money finished product and is turned over and heat compression mould, and the colourless picture and text of hot pressing of moulding on paper money self have just experienced the temperature deformation process, and mechanical means turn over molding jig, often turns over a capital and produces the lot of essential factors loss.In addition, also have the relative position problem on a random pattern and the colourless picture and text microcosmic of hot pressing, this is the impassable obstacle of fake producer equally.Gravure technique is one of the most powerful false proof means of banknote always, and can not get primary template and be impossible accurately imitated gravure picture and text, the colourless picture and text that hot pressing template extrudes than the gravure picture and text precision on bill many, more impossiblely by the fake producer, successfully copied.The gravure template of utilizing same technique to be manufactured on to mould printing picture and character on the paper money substrate, its technique meticulous is not far in conventional paper gravure note template making technique, first to utilize after artificial engraving artificial carved template that the computer carving technology will be amplified to be contracted to set value the fine degree that can reach.
A square film will be printed how many and mould paper money, just how much hot pressing simultaneously organizes colourless picture and text, every is moulded the on-chip pattern of paper money is mutually different random pattern, but the colourless picture and text of the hot pressing on it are identical, and the common formation of the colourless picture and text of random pattern and hot pressing is moulded the background patterns of paper money.
The temperature of hot-pressing processing is the vitrification point of macromolecular material.
The preparation method of this hot pressing template is:
According to detail of design, utilize the 3D printing technique to manufacture background and be yellow cuboid for white, picture and text, the material that white adopts is silver, and the yellow material adopted is gold;
Around cuboid, supplement silver, take and utilize silver cuboid to be supplemented to the first cylinder of rubbing as supplying;
Under normal temperature (" normal temperature " definition of country variant and same country different industries all is suitable for), rub this first cylinder, to increase by the first cylindrical length, the minification that dwindles the area of cross section is the setting multiple value, and described setting multiple value is greater than 10:1.Suppose that this first cylinder cross-sectional area is contracted to 1/49 of initial area, the gold pattern line reduced width of its cross section is to original 1/7.Certainly, just for example, in fact the colourless mould of hot pressing can reach any needed precision to these numerical value.Usually should make below area reducing to 1/10.The front and back area differs larger, and the gold pattern of cross section is meticulousr, if cross-sectional area is contracted to 1/49 of initial value, the picture and text lines are very meticulous.Certainly, the microcosmic force-bearing situation of rubbing in process is impossible to accurately control, and inevitably with to a certain degree randomness, this randomness and fine degree make the colourless picture and text of hot pressing accurately not copied by the fake producer, only the master mould.The manufacture of template is disposable, need not emphasize high efficiency, evenly exerts pressure and slowly rubs as top priority.Pressure is more even, the speed of rubbing is slower, and the picture and text on mould more can approach the picture and text shape of design, and namely template quality is higher.
Described first cylinder of crosscut after rubbing repeatedly, and and the picture and text original copy relatively, the tangent plane near described picture and text original copy is defined as to the mother matrix of rebuilding or renovate template; Enter following process;
With nitric acid, corrode mother matrix, to corrode the silver on described mother matrix, make silver corrosion and the gold pattern is exposed;
Treat the pattern of gold material and the setting height that word protrudes from the background of silver material, stop the nitric acid corrosion, rinse with clear water the described mother matrix that nitric acid corroded, obtain original master;
(this step is place mat with chemical vapour deposition technique and physical gas phase deposition technology, to make original master surface precipitation one deck carbide alloy material film, make cautious place mat like this, because the rigidity deficiency of gold and silver, the enough carbide alloy of disposal pouring is the destruction larger to the gold pattern generating likely), the recycling plasma spray technology increases the thickness of carbide alloy material film, after the thickness of described carbide alloy material film is increased to preset value, described carbide alloy material film is carried out to the disposal pouring carbide alloy, obtain colourless hot pressing template.
Being placed on and from a little farther place of eyes (such as 50 centimeters) backlight, observing in fact very clearly moulding colourless picture and text that on the paper money substrate, hot pressing forms, is not assume as a matter of course more closely more clear.Also can determine according to the concrete condition of printing-ink that whether random pattern being moulded to the paper money substrate does the surface corona processing.Roughness and well-pressed degree are the main sources of feel, people are when " money is in one's hands ", and feel is abnormal if find, generally can be introduced into down evaluator one, such as the generation that looks round, asks someone is distinguished or uses instrument to differentiate, so the colourless picture and text of hot pressing are the technique that paper money generally adopts of moulding of a lot of countries.Smart mobile phone is that the random pattern of having popularized and having carried is moulded paper money discriminating instrument, and means are convenient, and conclusion is reliable.
Group's fancy rule is always effective false proof means, on banknote, has generally adopted this false proof process.Random pattern in this case is in kind the composition, the complexity of color and the fine degree of lines have exceeded the upper limit that modern printing technology can reach, with modern printing technology, it is the random pattern in impossible successful copy substrate, adopt the material identical with this case and identical technique, even add the old staff all can not copy another pattern the same mould the paper money substrate, this has just determined concrete certain uniqueness of moulding the paper money background patterns, and this uniqueness can be by, reliably judgement convenient at the universal internet appliance of China.More the good news is, gathering way of mobile phone pixel is very fast, very favourable to the judgement of moulding the paper money true and false.The prerequisite that this viewpoint is correct is the pixel that the mm professional camera special pixel of seal paper money factory sampling is not less than popular mobile phone, and this prerequisite is set up certainly.
That utilizes that this case moulds that the paper money substrate prints moulds the anti-counterfeit recognition technology that paper money can compatible most of existing bill, such as becoming ink, magnetic material, phosphor pattern, stealthy denomination numeral, trace element secret mark, SD gravure to printing etc., these technology can continue to use.Random background patterns is moulded the paper money substrate and self is possessed powerful anti-counterfeit capability, but follow-up printing makes this mould paper money can compatible existing bill automatic identification technology, do not need to drop into suddenly because paper money is moulded in distribution huge fund and upgrade existing automatic identification equipment (as ATM and paper money counter) comprehensively, this is conducive to that random pattern is moulded to the paper money substrate technology and drops into practical.Big to mould that paper money starts be a kind of ideal chose from issuing, and then progressively enter the low-denomination banknotes field, finally with moulding paper money, thoroughly replaces bill.
Can estimate, individual issuing cost of moulding paper money is higher than bill, but it is more much longer than bill to mould the life cycle of paper money, and comprehensive issuing cost is more much lower than bill.With what random pattern moulded that the paper money substrate prints, mould paper money and can not successfully be copied by the fake producer in foreseeable time range, basic this pass of general public of just not crossing of counterfeit money, even if being arranged, several counterfeit money covered careless people, thereby automatic monitored control system soon can lock-in range and announced that the banknote of this number completely cancels and stops loss fast, must not occur that counterfeit money spreads unchecked the situation that causes society panic.Do not cross this pass of general public and automatically lock counterfeit money and occur that scope is even more important to the false proof of banknote, very will having arrived bank, just to distinguish banknote true and false, lose once having occurred, fake producer's purpose has also reached, scope appears and automatically lock counterfeit money, not only be convenient to public security and review source, and itself is exactly the fright to the counterfeit money producer.The counterfeit money that can not invest in batches market is nonsensical to the fake producer, and market will inevitably be found very soon and lock-in range and invest in batches.
These are only the preferred embodiments of the present invention, not be used to limiting the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (10)

1. a random pattern is moulded the paper money substrate, it is characterized in that, pattern is random, and described pattern is formed by some randomly shaped and linear heat pressure adhesives random color.
2. a random pattern claimed in claim 1 is moulded the preparation method of paper money substrate, it is characterized in that, comprising:
To set stacked system, the macromolecule material film of the macromolecule material film of several color random distribution and several true qualities is superposeed and obtains the thin layer set;
Described thin layer set is rolled into to cylinder;
A plurality of described cylinders are carried out to parallel stacking and use the macromolecule material film of same material or cordage to be tied to the class cylinder;
Described class cylinder is heated to the vitrification point of described macromolecular material and adopts mechanical force to push and rub described class cylinder, make it to become the cylindrical structure that cross-sectional area is larger, continue to rub so that the length of this cylindrical structure increases, cross-sectional area is contracted to preset value;
Described class cylinder after will pushing and rub by hot pressing is processed into rectangular post;
With set angle and the described rectangular post of setting interval cutting, obtain square film;
By hot pressing template, described square film is carried out to colourless picture and text hot pressing, obtain described random pattern and mould the paper money substrate.
3. preparation method according to claim 2, is characterized in that, described setting stacked system is: the stack alternate with the true qualities macromolecule material film of the macromolecule material film of color random distribution.
4. preparation method according to claim 2, is characterized in that,
Described described class cylinder be heated to the vitrification point of described macromolecular material and adopt mechanical force to push and rub described class cylinder, comprising:
Described class cylinder is heated to the vitrification point of described macromolecular material, and adopts mechanical force to rub to cylindrical structure described class cylinder;
When if described macromolecular material is ultra-high molecular weight polyethylene, continue to be heated to melting and continue to rub, keep molten condition 25-35 minute, then be cooled to vitrification point, continue to rub to the cylindrical cross-sectional area of described class and be contracted to preset value.
5. preparation method according to claim 2, is characterized in that,
Described described class cylinder after will pushing and rub by hot pressing is processed into rectangular post, comprising:
By described extruding and the described class cylinder after rubbing put into elongated rectangular recess;
The described rectangular recess of preheating;
While hot to be in the described extruding in described rectangular recess and rub after described class cylinder press and cooling and shaping.
6. preparation method according to claim 2, is characterized in that,
Described set angle be the knife face of cutting knife and described square column axially between angle be 45 degree.
7. preparation method according to claim 6, is characterized in that,
Described with set angle with after setting the interval described rectangular post of cutting and obtaining square film, described by hot pressing template, described square film is carried out to colourless picture and text hot-pressing processing before, described preparation method also comprises: take and set the cutting number of times and stack as circulating unit carries out two groups of circulations to described square film;
The stacking mode that described two groups of circulations are stacked is: the described square film that cutting for the first time obtains lies against first group; The described square film that cutting for the second time obtains is put in second group; For the third time the described square film that obtains of cutting its planar after its center 90-degree rotation, be positioned over above the described square film that cutting obtains for the second time; The 4th described square film of obtaining of cutting its planar after its center Rotate 180 degree, be positioned over above the described square film that cutting obtains for the third time; The 5th the described square film that obtain of cutting planar is placed in the 4th time in its institute and cuts above the described square film obtained after its central rotation 270 degree; The 6th described square film of obtaining of cutting its planar after its center 90-degree rotation, be positioned over above the described square film that cutting obtains for the first time; The described square film that the 7th cutting obtains planar is positioned over the 6th time above described film at it after its center Rotate 180 degree; The described square film that the 8th cutting obtains planar is positioned over the 7th time above described square film in its institute after its central rotation 270 degree; So far just completed a circulation stacking cycle.
8. preparation method according to claim 7, is characterized in that, described random pattern is moulded the paper money substrate and moulded paper money or antifalsification label for making.
9. preparation method according to claim 2, is characterized in that, described hot pressing template is upper and lower two carbide alloy templates, and the opposite face of two described carbide alloy templates is cast with fine and closely woven texture and pattern and word;
The temperature of described colourless picture and text hot pressing is the vitrification point of macromolecular material.
10. preparation method according to claim 9, is characterized in that, the preparation technology of described hot pressing template comprises:
According to detail of design, utilize the 3D printing technique to manufacture background and be yellow cuboid for white, picture and text, the material that described white adopts is silver, and the described yellow material adopted is gold;
Around described cuboid, supplement silver, take and utilize silver that described cuboid is supplemented and is the first cylinder;
Under normal temperature, rub described the first cylinder, to increase by the described first cylindrical length, dwindle the described first cylindrical cross-sectional area, the minification of described the first cylindrical cross-sectional area is for setting multiple value, and described setting multiple value is greater than 10:1;
Described first cylinder of crosscut after rubbing repeatedly, respectively by the picture and text of each tangent plane and original copy picture and text relatively, be defined as near the tangent plane of described original copy picture and text the mother matrix of rebuilding or renovate template by picture and text;
With the described mother matrix of nitric acid corrosion, to corrode the silver on described mother matrix;
Treat the pattern of gold material and the setting height that word protrudes from the background of silver material, stop described nitric acid corrosion, rinse with clear water the described mother matrix that described nitric acid corroded, obtain original master;
The place mat carbide alloy material film on described original master with chemical vapour deposition technique and physical gas phase deposition technology, the recycling plasma spray technology increases the thickness of described carbide alloy material film, after the thickness of described carbide alloy material film is increased to preset value on described carbide alloy material film property cast carbide alloy once, obtain described hot pressing template.
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