CN102968928A - Multi-layered anti-counterfeit label and production method and multi-layered anti-counterfeit indication method thereof - Google Patents
Multi-layered anti-counterfeit label and production method and multi-layered anti-counterfeit indication method thereof Download PDFInfo
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- CN102968928A CN102968928A CN2012104803255A CN201210480325A CN102968928A CN 102968928 A CN102968928 A CN 102968928A CN 2012104803255 A CN2012104803255 A CN 2012104803255A CN 201210480325 A CN201210480325 A CN 201210480325A CN 102968928 A CN102968928 A CN 102968928A
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Abstract
The invention relates to the anti-counterfeit indication technology, in particular to a multi-layered anti-counterfeit label, a production method thereof and a multi-layered anti-counterfeit indication method adopting the multi-layered anti-counterfeit label, the multi-layered anti-counterfeit label is based on the thermal shape memory effect of polymer, and the authenticity of a product can be identified according to the gradual change of the feature of the multi-layered anti-counterfeit label. The multi-layered anti-counterfeit label is provided with a substrate made of thermal shape memory polymer material, and the substrate is provided with a plurality of predeformations which are formed under different temperatures higher than the initial temperature of the glass transition or melting transition of the material in the process of one or more times of heating. The multi-layered anti-counterfeit label has a simple structure, is small and low in cost, and is hard to counterfeit; and the anti-counterfeit method is easy to implement, is low in cost, and is hard to imitate.
Description
Technical field
The present invention relates to false proof pointing technology, a kind of thermal shape memory effect based on polymkeric substance specifically, differentiate multi-level antifalsification label and the manufacture method thereof of authenticity of products by progressively changing of its pattern, and the multi-level false proof indicating means of using this multi-level antifalsification label.
Background technology
Along with increasing traditional anti-counterfeiting technology (such as laser trademark, bar code and pattern etc.) is grasped and copied by extraneous, causing product to be faked becomes day by day serious social concern.Research and develop new anti-counterfeiting technology and become current exigence.
A lot of polymkeric substance have significant SME, can the perception environmental evolutions, and make response in the mode that pattern changes (restPosing).At present, thermic is the most general a kind of type of drive of polymer shape memory effect.Its principle is to utilize shape-memory polymer to bring out shape for the sensitivity characteristic of temperature to recover.
Utilize these characteristics of thermal shape memory polymkeric substance can make false proof indication product.The false proof indicating means of present shape-memory polymer (CN 101826278 B, CN 102024379 A, 200410051383,201010125727, CN 101916528 B, CN 102024379 A, CN 201745882 U, CN 201838256 U, CN 101877196 A) is to utilize the pattern of shape-memory polymer one-time heating front and back to change to carry out anti-counterfeiting detection.The technical difficulty of this method is limited, and is imitated easily, thereby is easy to lose false proof function.
Recent research finds that by suitable pre-treatment, the thermal shape memory polymkeric substance can add at one or many pines for progressively recovery of distortion, and corresponding pattern progressively changes.Its basic pre-treatment method is: be heated to the polymkeric substance of certain size and shape more than the initial temperature of its glass transition (or melting transition) through one or many, after making its pattern that a series of variation occurs under different temperatures, it is following or solidify the end temp following (being the predeformation process) of transformation to be cooled to the initial temperature of glass transition again.Predeformation can be overlapping, also can be not overlapping.After the heating shape recover, under specific temperature, the corresponding predeformation of polymkeric substance can progressively be recovered, thus pattern correspondingly progressively changes.Still do not utilize at present this multi-level predeformation and antifalsification label product and the method for anti-counterfeit of recovery characteristics.
Summary of the invention
A technical matters to be solved by this invention is, utilizes thermal shape memory polymeric material self, provide a kind of simple in structure, volume is little, cost is low and the multi-level antifalsification label that is difficult to copy and the manufacture method of this multi-level antifalsification label.
Another technical matters to be solved by this invention is, utilizes the thermal shape memory characteristic of thermal shape memory polymkeric substance, provide a kind of and can indicate the measurand true and false, and simple and easy to do, cost is low, the multi-level false proof indicating means that is difficult to imitate.
Multi-level antifalsification label of the present invention has the matrix of thermal shape memory polymeric material, have in the process of one or many heating a plurality of predeformation of under the glass transition of this material or the different temperatures more than the melting transition initial temperature, implementing on the matrix.Described predeformation is one or more combinations during indentation trace, belling trace, pressure fold or the pressing to matrix is out of shape.
The a plurality of predeformation that form under the described different temperatures are the nonoverlapping predeformation in the zones of different formation of matrix.
The a plurality of predeformation that form under the described different temperatures also can be the overlapping predeformation in the same area formation of matrix.
The material of described matrix has one or more glass transitions or melting transition characteristic, and described a plurality of predeformation are the predeformation of implementing on one or more glass transitions or melting transition initial temperature.
Permanent set amount after the matrix predeformation is higher than 5%, and the shape recovery ratio after the recovery is higher than 5%.
Described thermal shape memory polymkeric substance is straight polymer or polymer matrix composite.Packing material in the described polymer matrix composite is powder filled material or fiber-filled material.
The manufacture method of multi-level antifalsification label of the present invention is: select the thermal shape memory polymkeric substance as the matrix of antifalsification label according to temperature requirement; Matrix is heated through one or many, in one or many heating process, under the glass transition or the series of temperature more than the melting transition initial temperature of material, different parts or same area at matrix produce a plurality of distortion, be cooled to again below its glass transition initial temperature or solidify and change below the end temp antifalsification label that formation has a plurality of predeformation; Each predeformation has corresponding shape recovery temperature.
Multi-level false proof indicating means of the present invention is that above-mentioned multi-level antifalsification label is associated with needing false proof product, when judging authenticity of products, by multi-level antifalsification label being carried out the heating of a series of transformation temperatures, a plurality of predeformation are recovered one by one, observe the process and the result that recover, with this foundation as the judgement true and false.
Described multi-level antifalsification label is that multi-level antifalsification label is placed in the packing material that needs false proof product with the method that needs false proof product to be associated.
Described multi-level antifalsification label also can be multi-level antifalsification label to be placed to be attached to need on the false proof product or its packing material with the method that needs false proof product to be associated.
Described multi-level antifalsification label also can be that multi-level antifalsification label is made as one with needing false proof product or its packing material with the method that needs false proof product to be associated.
The present invention compared with prior art has following advantageous effect:
1, antifalsification label provided by the present invention, manufacture method and false proof indicating means, need not circuit or mechanical structure device, be based on the performance (the thermal shape memory polymkeric substance is to the sensitivity characteristic of temperature) of material itself, variation by its pattern realizes antiforge function, easy operating, reliable results.
2, antifalsification label manufacture method provided by the present invention is carried out pre-treatment to shape-memory polymer first, realizes afterwards the function of the multi-level false proof indication of label by the progressively variation of its pattern.The size of the permanent set after the predeformation can be that nanoscale is to decimeter grade.Its technology processing good confidentiality, the imitation difficulty is large.
3, antifalsification label provided by the present invention can as required, by selecting different polymkeric substance, be made difformity and realize that with the antifalsification label of size, different predeformation modes implementation is flexible.
4, thermal shape memory polymkeric substance used in the present invention can be selected from existing polymkeric substance, can reduce cost.
Description of drawings
Fig. 1 is the not synoptic diagram of the multi-level antifalsification label manufacture process of overlapping predeformation that has of the embodiment of the invention two;
Fig. 2 is the synoptic diagram of the multi-level antifalsification label manufacture process with overlapping predeformation of the embodiment of the invention three;
Fig. 3 is the not false proof indication process synoptic diagram of the multi-level antifalsification label of overlapping predeformation that has of the embodiment of the invention four;
Fig. 4 is the false proof indication process photo of the multi-level antifalsification label with overlapping predeformation of the embodiment of the invention five.
Embodiment
With specific embodiment the present invention is further elaborated with reference to the accompanying drawings.Protection scope of the present invention is not limited by specific embodiment.In addition, with under the prerequisite of technical solution of the present invention, any change or change that those of ordinary skills that the present invention is done realize easily all will fall within the claim scope of the present invention.
Embodiment one: a kind of multi-level false proof indicating means, it utilizes the thermal shape memory characteristic of shape-memory polymer, through behind the thermodynamics pre-treatment, in heating process progressively, respective change progressively occurs in the pattern of polymkeric substance, utilizes this characteristic to make the true and false that label is differentiated article.
The thermal shape memory effect of the thermal shape memory polymkeric substance of indication is significant: the permanent set amount of polymkeric substance after thermodynamics processing is higher than 5%; Shape recovery ratio is higher than 5%.Described thermal shape memory polymkeric substance is straight polymer or polymer matrix composite.
With the thermal shape memory polymkeric substance of the certain size matrix as label, under the initial temperature that is higher than its glass transition or melting transition, carry out repeatedly pre-treatment, make the antifalsification label finished product.Being shaped as of multi-level antifalsification label is cylindrical, spherical, dull and stereotyped, one or more combinations in the film, wire, bar shaped.
Predeformation is one or more combinations during indentation trace, belling trace, pressure fold or the pressing to label substrate is out of shape.According to the service condition requirement, the size of the permanent set of predeformation can be from the nanoscale to the decimeter grade.Have a plurality of overlapping or nonoverlapping predeformation on the multi-level antifalsification label.Each predeformation has corresponding shape recovery temperature.Above-mentioned multi-level antifalsification label is associated with needing false proof product, when judging authenticity of products, by multi-level antifalsification label is carried out the heating of a series of transformation temperatures, a plurality of predeformation are recovered one by one, observe the process and the result that recover, with this foundation as the judgement true and false.
Described multi-level antifalsification label can be that multi-level antifalsification label is placed in the packing material that needs false proof product with the method that needs false proof product to be associated; Also can be multi-level antifalsification label to be placed or is attached to need on the false proof product or its packing material; Can also be that multi-level antifalsification label is made as one with needing false proof product or its packing material.
Embodiment two: take epoxy polymer as matrix, preparation has the process of the antifalsification label of overlapping predeformation not shown in Fig. 1, comprises following processing step:
Label is heated to 70 ℃;
Extrude impression (the impression maximum gauge is 5 mm, and the degree of depth is 2 mm, and each impression spacing is 10 mm) shown in Fig. 1 (b) on its surface;
Be cooled to 60 ℃, extrude more impression in its surperficial zones of different;
Be cooled to room temperature.Obtain the finished product label shown in Fig. 1 (c).
Embodiment three: take epoxy polymer as matrix, prepare the process of the antifalsification label with overlapping predeformation as shown in Figure 2, comprise following processing step:
Label is heated to 70 ℃;
Use the mould of special shape at the first impression of its surface extrusion shown in Fig. 2 (b);
Be cooled to 60 ℃, use the mould of another kind of pattern instead at the second impression of the same area extrusion shown in Fig. 2 (c);
Be down to room temperature, obtain the label finished product shown in Fig. 2 (d).
Embodiment four: be of a size of the multi-level antifalsification label of the polythene material of 10 mm * 5 mm * 1 mm, not the existing projection pattern (single protrusion diameter 0.5 mm, high 0.2 mm, projection spacing 1 mm) shown in Fig. 3 (e) in its surface before the predeformation.Label placed 25 ℃ environment.Be cooled in-5 ℃ of processes, under different temperature, progressively projection flattened respectively.In this cooling applanation process respectively corresponding pattern be followed successively by (e), (d) among Fig. 3, (c), (b) and (a) shown in.The label finished product for preparing is shown in Fig. 3 (a).
When using this label to differentiate article genuine-fake, label taken out from cold storage environment place under the environment that is about 30 ℃, the temperature of label slowly raises.In this process, if a series of patterns by (a) to (e) that label surface progressively occurs as shown in Figure 3 change (can observe by magnifier), just can conclude that these article are genuine piece.
Embodiment five: the multi-level antifalsification label finished product of styrene materials, it is of a size of 20 mm * 20 mm * 3 mm.Under different temperatures, the two sides of using coin forms predeformation at the same position of the label impression that superposes.The label finished product is shown in Fig. 4 (a).
When using this label to differentiate article genuine-fake, it is inserted in the warm water (more than 60 ℃), shown in Fig. 4 (b), the pattern of the original coin face that shows of finished product label thickens, and the pattern of coin another side begins to manifest.
After it was inserted boiling water, then the pattern of surperficial original coin face disappeared, and only showed the pattern of coin another side, shown in Fig. 4 (c).
Continue heating with lighter, the then all pattern complete obiterations of label surface are shown in Fig. 4 (d).
According to the above-mentioned variation of label, then can differentiate the indicated article of this label is genuine piece.
Claims (9)
1. multi-level antifalsification label, it has the matrix of thermal shape memory polymeric material, it is characterized in that: have in the process of one or many heating a plurality of predeformation of under the glass transition of this material or the different temperatures more than the melting transition initial temperature, implementing on the matrix.
2. multi-level antifalsification label according to claim 1 is characterized in that: described predeformation be to matrix indentation trace, belling trace, press fold or flatten one or more combinations in the distortion.
3. multi-level antifalsification label according to claim 1 is characterized in that: a plurality of predeformation that form under the described different temperatures are nonoverlapping predeformation that the zones of different at matrix forms.
4. multi-level antifalsification label according to claim 1 is characterized in that: a plurality of predeformation that form under the described different temperatures are the overlapping predeformation that the same area at matrix forms.
5. multi-level antifalsification label according to claim 1, it is characterized in that: the material of described matrix has one or more glass transitions or melting transition characteristic, and described a plurality of predeformation are the predeformation of implementing on one or more glass transitions or melting transition initial temperature.
6. multi-level antifalsification label according to claim 1, it is characterized in that: the permanent set amount after the matrix predeformation is higher than 5%, and the shape recovery ratio after the recovery is higher than 5%.
7. multi-level antifalsification label according to claim 1, it is characterized in that: described thermal shape memory polymkeric substance is straight polymer or polymer matrix composite; Packing material in the described polymer matrix composite is powder filled material or fiber-filled material.
8. the manufacture method of the described multi-level antifalsification label of one of claim 1-7 is characterized in that: select the thermal shape memory polymkeric substance as the matrix of antifalsification label according to temperature requirement; Matrix is heated through one or many, in one or many heating process, under the glass transition or the series of temperature more than the melting transition initial temperature of material, different parts or same area at matrix produce a plurality of predeformation, be cooled to again below its glass transition initial temperature or solidify and change below the end temp antifalsification label that formation has a plurality of predeformation; Each predeformation has corresponding shape recovery temperature.
9. multi-level false proof indicating means, it is characterized in that: be that the product that the multi-level antifalsification label of one of claim 1-7 and needs are false proof is associated, when judging authenticity of products, by multi-level antifalsification label being carried out the heating of a series of transformation temperatures, a plurality of predeformation are recovered one by one, observe the process and the result that recover, with this foundation as the judgement true and false.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108752580A (en) * | 2018-05-24 | 2018-11-06 | 安徽农业大学 | A kind of double anti-forge material, antifalsification label and preparation method and false-proof detection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108752580B (en) * | 2018-05-24 | 2019-08-13 | 安徽农业大学 | A kind of double anti-forge material, antifalsification label and preparation method and false-proof detection method |
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