CN1100081C - Antiforge pressure-sensitive marker of high-molecular porous compound film and its preparing process - Google Patents
Antiforge pressure-sensitive marker of high-molecular porous compound film and its preparing process Download PDFInfo
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- CN1100081C CN1100081C CN00119558A CN00119558A CN1100081C CN 1100081 C CN1100081 C CN 1100081C CN 00119558 A CN00119558 A CN 00119558A CN 00119558 A CN00119558 A CN 00119558A CN 1100081 C CN1100081 C CN 1100081C
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Abstract
The present invention relates to a pressure-sensitive anti-counterfeiting mark for a high molecular porous composite film and a preparation method thereof. The gluing of the existing anti-counterfeiting mark or a simple figure or the situation that the figure is displayed by temperature changes has the disadvantages of easy counterfeiting and non direct observation. The anti-counterfeiting mark, which is prepared by compounding a high molecular porous film with a microcapsule, is glued with a figure under the composite film. The figure is not displayed in general situation. The microcapsule is broken by finger press, and when a solvent in the microcapsule is filled in pores of the film, the figure on an inner layer is displayed. The anti-counterfeiting mark has the advantages of convenient preparation, favorable anti-counterfeiting effect and wide application prospect.
Description
The present invention is a kind of anti-counterfeiting mark of being composited of a kind of high-molecular porous film and microcapsule and preparation method thereof.
There is crucial application in fields such as high-molecular porous film synthesizes at biotechnology, medicine, chemical, the making of hi-tech anti-counterfeiting mark.Commercial high-molecular porous film is because pore diameter range is certain, structure function is single-minded, produce the polystyrene porous membrane of " Celgard " porous membrane, the production of U.S. Akozo company etc. as U.S. Celanese company, the diameter range in hole is about 0.4 μ m～1.5 μ m, therefore can not satisfy the needs that various differences require the user.The means preparation that United States Patent (USP) 4846095,4374889,4733786,5389426 etc. has been introduced employing " thermal induction is separated " respectively can be used for the method for the high-molecular porous film that anti-counterfeiting mark makes.Known this high-molecular porous film presents opaque characteristic in air dielectric, reason is that the specific refractory power and the air dielectric of porous-film is inconsistent.When selecting specific refractory power certain solvent consistent with porous-film to be full of porous-film, it is transparent that this porous-film will become.The special anti-counterfeiting that can design certain special solvent sensitivity according to this principle identifies." critical temperature indicating system " such as United States Patent (USP) 4846095 is mentioned designed the sign based on porous-film, when this sign is soaked by certain blending agent, can't observe the internal layer picture and text from identifying the surface; Under critical temperature, it is transparent that the blending agent phase-splitting causes identifying surperficial porous-film, thereby observe the internal layer picture and text.United States Patent (USP) 4374889 and 4733786 is based on too and presents the invention that the sign picture and text change under the temperature variation, but the variations in refractive index that temperature variation causes comes from the change after this body structure of porous-film is heated.United States Patent (USP) 5389426 " the tamperproof fidelity sign " mentioned for another example, the variations in refractive index of porous-film is based on volatile change of used filling solvent, and its aim remains with variation of temperature and presents the variation that identifies different picture and text.
Above-described several porous-film anti-counterfeiting marks invention all causes the difference of picture and text to change based on temperature variation, anti-counterfeiting mark report more direct, short-cut method is not arranged at present as yet.
The objective of the invention is to study a kind of external force a little and can observe directly sign of Antiforge and preparation method thereof.
Sign of the present invention is mainly made by high-molecular porous film and pressure-sensitive microcapsule, and the pressure-sensitive microcapsule layer of compound one deck is enclosed with solvent in the microcapsule under high-molecular porous film, and the specific refractory power of solvent is identical with film.Porous membrane bed thickness 50～200 μ m, aperture 0.1～10 μ m, microcapsule bed thickness 10～50 μ m.This microcapsule porous composite film is compound in the printing picture and character surface again, and before applying external force, this sign can present the picture and text that porous film surface is printed, but the picture and text (private mark) that the composite membrane internal layer is printed are invisible.The microcapsule shell material that is adopted can form by natural polymer thermofixation or high polymer monomer letex polymerization, and its core material is the specific refractory power solvent identical with the porous-film specific refractory power.Under external force, the solvent that is produced by microcapsules rupture is filling porous film, thereby makes that this tunic is transparent, manifests internal layer picture and text (private mark).
The porous membrane porousness of above-mentioned laminated film anti-counterfeiting mark is 50～85%, and an amount of hole makes transparency increase when solvent is full of in the hole in the microcapsule.
The ratio of exploration discovery microcapsule in porous-film is better in 10～50% scopes after deliberation, too many need not, very little the reduction transparency.
The preparation of porous-film is in (30～80) %:(20～70 by thermoplastic macromolecule material and solvent among the present invention) the % ratio draws film forming, drawing method is with " thermal induction is separated " method, be to make prior art in the film at present: use the solvent identical to do core material in the microcapsule then with high-molecular porous film refractive index, make the sheating material of microcapsule of natural macromolecular material or synthesized polymer material, with the synthetic microcapsule emulsion of the technology of existing preparation microcapsule, after cohering the picture and text layer on the base stock, cohere microcapsule layer and porous film layer compound.
High molecular film material available polyethylene, polypropylene in the above-mentioned preparation process: microcapsule shell has gelatin, gum arabic, polystyrene, polyester etc., and the core material of microcapsule has trieline, water, unsaturated fatty acids, oleic acid etc.
If also there is the anti-counterfeiting mark of graph-text identification on the preparation surface; then can and isolate on the base stock and cohere the picture and text layer at non-setting adhesive; layer coheres microcapsule and porous membrane composite bed thereon again; cohere surperficial picture and text layer above the composite bed at this; for protecting surperficial picture and text layer not frayed, on surperficial picture and text layer, be covered with layer of transparent protected polymeric film layer.What so can see when this laminated film is not subjected to the external force finger pressure is surperficial picture and text layer, and the finger pressure capsules break, when solvent is full of hole in the film, and promptly visible internal layer picture and text.Embodiment has a detailed description this.
Porous membrane and microcapsule compound tense cohere with pressure sensitive adhesive among the present invention, and be simple and convenient, and effect is good again.
Anti-counterfeiting mark of the present invention is compared easy to use with existing anti-counterfeiting mark, antifalse effect is good.The anti-counterfeiting mark of prior art is the simplest to be cohering of individual layer picture and text, more complicated temperature variation that depend on, and product of the present invention only need be pointed gently one and press and can show that the internal layer picture and text directly can make a clear distinction true and falsely, brings great convenience for the use of anti-counterfeiting mark.
Cost of the present invention is not high, and raw material is easy to get, and preparation is simple, is easy to promote, and has very good prospects for application.
Embodiment 1.
The preparation of porous-film: 60% polyethylene and 40% mineral oil keep molten state membrane on temperature control film drawing machine at 200 ℃ of following heating and meltings, and the adjustment of thickness is controlled under 50 ℃ and finishes, and the thickness of control gained film is 90 μ m.After treating polyethylene and mineral oil phase-splitting, by containing the mortise of extraction agent sherwood oil, then contained mineral oil obtains to separate in the film with film.Resulting polyethylene porous membrane aperture is about 0.4 μ m.
The preparation of microcapsule:
10 parts of gelatin and 5 parts of gum arabics and 85 parts of water heating for dissolving obtain component a;
70 parts of a, 25 parts of trielines, 5 part 4% EMA anhydride copolymer (trade(brand)name: emulsification 30 minutes under 80 ℃, high-speed stirring EMA-31MONSANTO CHEMICAL CO).Obtain containing the emulsion b of microcapsule after the cooling.
Anti-counterfeiting label is made: this sign constitutes by 7 layers of unit is compound.Layer 7 (innermost layer) are rubberised layer, and about 5 μ m are thick, adopt on common non-setting adhesive coating and the isolation base stock and make; Layer 6 is common trade mark unit, can be that art paper or PET film are the silk-screen or the offset printing product of base material, as presses the red day minister symbol that silk-screen is made; Layer 5 is the coating layer of said components b, and thickness is 20 μ m; Layer 4 is a tack coat, adopts the 3M pressure sensitive adhesive Acrylic of company 100 coatings 5 μ m; Layer 3 is above-mentioned polyethylene porous membrane layer, compound and tie layer surface; Layer 2 surface literary composition layer adopt at layer 3 surperficial silk-screen or offset printing required picture and text such as light blue " it minister is false proof " four words are printed on it; Layer 1 is a sealer, is the thick PVC overlay film layers of 2 μ m.
Make complete anti-counterfeiting mark by above technology and observe, only can see light blue " it minister is false proof " four words, after its surface is pushed several seconds, can observe red day minister symbol and present on the background with light blue " the sky minister is false proof " four words with finger from the surface.
Embodiment 2.
The preparation of porous-film: 70% polypropylene and 30% mineral oil keep molten state membrane on temperature control film drawing machine at 200 ℃ of following heating and meltings, and the adjustment of thickness is controlled under 50 ℃ and finishes, and the thickness of control gained film is 10 μ m.After treating polyethylene and mineral oil phase-splitting, by containing the mortise of extraction agent sherwood oil, then contained mineral oil obtains to separate in the film with film.Resulting polyethylene porous membrane aperture is about 1.2 μ m.
The preparation of microcapsule:
15 parts of gelatin and 8 parts of gum arabics and 77 parts of water heating for dissolving obtain component a;
70 parts of a, 25 parts of trielines, 5 part 4% the EMA anhydride copolymer (trade(brand)name: EMA-31MONSANTO CHEMICAL CO) 80 ℃, 5000 rev/mins stir down under emulsification 30 minutes.Obtain containing the emulsion b of microcapsule after the cooling.
Anti-counterfeiting label is made: this sign constitutes by 7 layers of unit is compound.Layer 7 (innermost layer) are rubberised layer, and about 5 μ m are thick, adopt on common non-setting adhesive coating and the isolation base stock and make; Layer 6 is common trade mark unit, can be that art paper or PET film are the silk-screen or the offset printing product of base material, as presses red Fudan University symbol that silk-screen is made; Layer 5 is the coating layer of said components b, and thickness is 20 μ m; Layer 4 is a tack coat, adopts the 3M pressure sensitive adhesive Acrylic of company 100 coatings 5 μ m; Layer 3 is above-mentioned polypropylene porous film layer, compound and tie layer surface; Layer 2 surface literary composition layer adopt and at layer 3 surperficial silk-screen or offset printing required picture and text such as four words of light green " Fudan University " are printed on it; Layer 1 is a sealer, is the thick PVC overlay film layers of 2 μ m.
Make complete anti-counterfeiting mark by above technology and observe, only can see four words of light green " Fudan University " from the surface, with finger after its surface is pushed several seconds, can observe that red Fudan University symbol presents and the background of light blue " Fudan University " four words on.
Claims (6)
1. the anti-counterfeiting mark of a pressure-sensitive high-molecular porous film, it mainly is made up of high-molecular porous film and pressure-sensitive microcapsule, it is characterized in that being compounded with under the high-molecular porous film pressure-sensitive microcapsule layer, the Antiforge layer that printing is arranged under this composite bed, composite porous film bed thickness 50～200 μ m, aperture 0.1～10 μ m, microcapsule bed thickness 10～50 μ m, the specific refractory power of microcapsule internal solvent is identical with high-molecular porous film.
2. the anti-counterfeiting mark of pressure-sensitive high-molecular porous compound film according to claim 1, the porousness that it is characterized in that porous membrane is 50～85%.
3. antiforge pressure-sensitive marker of high-molecular porous compound film according to claim 1 is characterized in that the ratio of microcapsule in porous membrane is 10～50%.
4. the preparation method of antiforge pressure-sensitive marker of high-molecular porous compound film according to claim 1 is characterized in that preparation porous membrane, microcapsule earlier, is composited then; With thermoplastic macromolecule material and solvent in (30～80) %: (20～70) % ratio draws film forming; Make the emulsion that contains microcapsule with solvent identical and macromolecular material, after cohering the picture and text layer on the base stock, microcapsule are cohered into composite bed with porous film layer then with the macromolecule membrane specific refractory power.
5. the preparation method of antiforge pressure-sensitive marker of high-molecular porous compound film according to claim 4; it is characterized in that on non-setting adhesive and isolation base stock, cohering the picture and text layer when laminated film anti-counterfeiting mark is made; its upper strata is microcapsule and porous membrane composite bed; be surperficial picture and text layer on this composite bed, be shaped on the transparent polymer thinfilm protective coating on the surperficial picture and text layer.
6. the preparation method of antiforge pressure-sensitive marker of high-molecular porous compound film according to claim 4 is characterized in that porous membrane and microcapsule compound tense cohere with pressure sensitive adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00119558A CN1100081C (en) | 2000-08-01 | 2000-08-01 | Antiforge pressure-sensitive marker of high-molecular porous compound film and its preparing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00119558A CN1100081C (en) | 2000-08-01 | 2000-08-01 | Antiforge pressure-sensitive marker of high-molecular porous compound film and its preparing process |
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| Publication Number | Publication Date |
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| CN1280998A CN1280998A (en) | 2001-01-24 |
| CN1100081C true CN1100081C (en) | 2003-01-29 |
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| CN00119558A Expired - Fee Related CN1100081C (en) | 2000-08-01 | 2000-08-01 | Antiforge pressure-sensitive marker of high-molecular porous compound film and its preparing process |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5389426A (en) * | 1993-01-25 | 1995-02-14 | Minnesota Mining And Manufacturing Company | Article for use in forming a permanent image using a temporary marker |
| CN1114932A (en) * | 1993-12-17 | 1996-01-17 | 埃尔夫阿托化学有限公司 | Flexible sheath made of PVF3 and its application to flexible metal pipes |
| CN1160911A (en) * | 1997-01-07 | 1997-10-01 | 高元杰 | Porous anti-fake mark making technology and equipment |
| CN1195833A (en) * | 1997-12-26 | 1998-10-14 | 清华大学 | Nuclear track microporous film anti-false mark and its distinguishing method |
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2000
- 2000-08-01 CN CN00119558A patent/CN1100081C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5389426A (en) * | 1993-01-25 | 1995-02-14 | Minnesota Mining And Manufacturing Company | Article for use in forming a permanent image using a temporary marker |
| CN1114932A (en) * | 1993-12-17 | 1996-01-17 | 埃尔夫阿托化学有限公司 | Flexible sheath made of PVF3 and its application to flexible metal pipes |
| CN1160911A (en) * | 1997-01-07 | 1997-10-01 | 高元杰 | Porous anti-fake mark making technology and equipment |
| CN1195833A (en) * | 1997-12-26 | 1998-10-14 | 清华大学 | Nuclear track microporous film anti-false mark and its distinguishing method |
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| Publication number | Publication date |
|---|---|
| CN1280998A (en) | 2001-01-24 |
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Granted publication date: 20030129 Termination date: 20120801 |