CN103568618B - For stock and the manufacture method thereof of security document - Google Patents
For stock and the manufacture method thereof of security document Download PDFInfo
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- CN103568618B CN103568618B CN201210256766.7A CN201210256766A CN103568618B CN 103568618 B CN103568618 B CN 103568618B CN 201210256766 A CN201210256766 A CN 201210256766A CN 103568618 B CN103568618 B CN 103568618B
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Abstract
The invention discloses the stock for security document and manufacture method thereof, it is be coated in plastic basis material surface by film pretreatment coating and the coating formed after heated drying that this stock starves precoated shet, dope layer is that its manufacture method is by aqueous polyurethane coating through being coated in precoated shet surface at least one times and the coating that formed after heated drying: mix to obtain aqueous polyurethane coating by accounting for coating solid total amount 30-60%, the binder waterborne polyurethane resin of 20-35%, 15-20% and 0-20%, hiding pigment particle, surfactant and deionized water respectively; Corona pre-treatment is carried out at least one side surface of plastic basis material, then the film pretreatment coating that primary coat is formed by least one in aqueous polyurethane and polyisocyanates carries out coating pretreatment, after heated drying, aqueous polyurethane coating is through being coated on precoated shet surface at least one times, its gained stock has higher coating binding strength and water resistance, and is applicable to offset printing and intaglio ink.<!--1-->
Description
Technical field
The present invention relates to a kind of stock and manufacture method thereof, espespecially relate to a kind of stock for security document and manufacture method thereof.
Background technology
Universal along with plastic products, plastic sheeting is as the maximum one of consumption in various form plastic products, and output also increases day by day.As a kind of printable fabric, because of it, there is the advantages such as merrily and lightheartedly transparent, moistureproof antioxygen, air-tightness are good, flexible, folding, smooth surface and be widely used in the industries such as packaging, printing, advertisement.But Plastic film surface tension force is low, is difficult to carry out on its surface to print, sprays and the technique such as adhesion.In order to strengthen its serviceability, needing to carry out surface modification to film, improving its surface tension, increase its printing intensity, but traditional modifying plastics method for plastic sheeting operability and adaptability not strong.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of stock and manufacture method thereof, the binding strength between each coating of this stock is high, have higher water-resistance, can meet hectographic printing and intaglio ink requirement, the scope of application is wide, its manufacture method is simple, easy to operate.
The present invention in order to the technical scheme solving its technical problem and adopt is: a kind of stock for security document, comprise plastic basis material, precoated shet and dope layer, it (can be that a side surface of plastic basis material is provided with plastics precoated shet and coating that described precoated shet and dope layer are fixedly arranged at least one side surface of plastic basis material successively, also can be that the both side surface of described plastic basis material is equipped with precoated shet and dope layer), described precoated shet is coated in plastic basis material surface by film pretreatment coating and the coating formed after heated drying, described aqueous polyurethane coating is by the aqueous polyurethane binder accounting for coating solid total amount 30-60%, account for the hiding pigment particle of coating solid total amount 20-35%, the surfactant accounting for coating solid total amount 15-20% and the deionized water accounting for coating solid total amount 0-20% composition, described dope layer is through being coated in precoated shet surface at least one times and the coating formed after heated drying by aqueous polyurethane coating, described dope layer is for be made up of two-layer above aqueous polyurethane coating, the thickness of every layer of aqueous polyurethane coating is 0.1 ~ 10 μm, described dope layer surface is provided with embossing, its surface is formed with the district of windowing of certain area, the light transmittance in this district of windowing is less than the light transmittance of other parts, when adopting stock of the present invention to carry out lithographic plate or intaglio ink, ink containing printing information need be printed directly to the coating of this stock, and be directly combined with coating, thus formation ink, strong construction between coating and precoated shet.
As a further improvement on the present invention, described plastic basis material is the composite membrane be made up of at least one in polypropylene, polyethylene, ethylene-vinyl alcohol copolymer, ethylene-propylene copolymer, polyester, nylon (can be the individual layer composite membrane that a kind of material is formed, also can be the multilayer complex films containing wherein two or more material, namely the composite membrane of at least one sandwich layer and two surface layers is contained), the thickness of plastic basis material is 5 ~ 150 μm.
As a further improvement on the present invention, described film pretreatment coating comprises a kind of in aqueous polyurethane and polyisocyanates or their combination.
For a stock manufacture method for security document, concrete steps are as follows:
Step one: prepared by film pretreatment coating: select at least one in aqueous polyurethane and polyisocyanates to mix;
Step 2: prepared by aqueous polyurethane coating:
The aqueous polyurethane binder of coating solid total amount 30-60% will be accounted for, account for the hiding pigment particle of coating solid total amount 20-35%, the surfactant accounting for coating solid total amount 15-20% and the deionized water accounting for coating solid total amount 0-20% mixing stir evenly formation aqueous polyurethane coating, in dope preparing process, if the hiding pigment used is dry powder body, then need to use the equipment such as high speed dispersor or roller mill, in deionized water medium or aqueous polyurethane binder, it is disperseed, form uniform pigment dispersion, subsequently in the mixing apparatus of routine, all components is mixed successively or simultaneously, stir rear obtained coating for subsequent use,
Step 3: film pretreatment:
Carry out corona pre-treatment at least one side surface of plastic basis material, then primary coat film pretreatment coating carries out coating pretreatment (film pretreatment coating coating weight is 0.1 ~ 1.0g/m2), forms precoated shet after heated drying on plastic basis material surface;
Step 4: coating and printing:
By the aqueous polyurethane coating prepared in step 2 through being coated on precoated shet surface (aqueous polyurethane coating coating weight is 1 ~ 10g/m2) at least one times, then carry out heated drying process and form dope layer, by not being coated with aqueous polyurethane coating to some regions, precoated shet surface of plastic basis material, or the coating layer thickness in this region is less than other regions, thus make the light transmittance in this region be greater than other parts, part " district of windowing " is defined on stock surface) coating process of any routine can be adopted to carry out online for coating method or off-line is coated with, such as print roll coating can be adopted, spraying, the modes such as curtain coating, precoating coating and aqueous polyurethane coating are coated on plastic basis material uniformly, the wherein coating method of preferred reverse roll, namely reverse anilox roll and scraper control the coating method of coating weight,
Step 5: curling.
As a further improvement on the present invention, in described step 3 and step 4, heated drying is treated to a kind of in heated-air drying and infra-red drying or their combination, and described bake out temperature is 60 ~ 140 DEG C.
As a further improvement on the present invention, described aqueous polyurethane binder comprises at least one in water soluble polyurethane resin and emulsion-type polyurethane resin, and the solid content of aqueous polyurethane binder is 10 ~ 40%, and viscosity is 0.1 ~ 1000mpas, hiding pigment is titanium dioxide, kaolin, silica, talcum, calcium carbonate, bentonite, at least one in diatomite, be preferably rutile-type or anatase titanium dioxide, kaolin, nanometer grade silica and talcum powder, as printed matter requires acid resistance, then calcium carbonate pigment can not be selected, hiding pigment particle diameter is 0.1 ~ 50 μm, surfactant comprises wetting agent, dispersant, crosslinking agent, stabilizing agent, plasticizer, drying retardant, defoamer, at least one in delustering agent and antistatic additive, as phosphate, APES, aromatic alkyl sulfonate, polyacrylate.
As a further improvement on the present invention, to the process of dried dope layer heat embossing after step 4, metallic roll hot pressing temperature is between 60 ~ 150 DEG C, linear pressure is between 10 ~ 100kN/cm, because the coating containing polyurethane binder has certain thermoplasticity, make this coating can carry out heat embossing process by the surperficial metal rod with raised design at a certain temperature, thus the irregular pattern of the coated tape of this stock can be made.
The invention has the beneficial effects as follows: precoated shet of the present invention is coated in plastic basis material surface by film pretreatment coating and the coating formed after heated drying, dope layer is repeatedly coated in precoated shet surface by aqueous polyurethane coating and the coating formed after heated drying, it has higher coating binding strength and water resistance, and be applicable to the requirement of offset printing and intaglio ink, can be used as the printing element of the security documents such as banknote, check, security and draft.
Accompanying drawing explanation
Fig. 1 be for security document stock mechanism principle schematic diagram.
Detailed description of the invention
Embodiment: a kind of stock for security document, comprise plastic basis material 1, precoated shet 2 and dope layer 3, it (can be that a side surface of plastic basis material is provided with plastics precoated shet and coating that described precoated shet 2 and dope layer 3 are fixedly arranged at least one side surface of plastic basis material 1 successively, also can be that the both side surface of described plastic basis material 1 is equipped with precoated shet 2 and dope layer 3), described precoated shet 2 is coated in plastic basis material surface by film pretreatment coating and the coating formed after heated drying, described dope layer 3 is through being coated in precoated shet surface at least one times and the coating formed after heated drying by aqueous polyurethane coating, described dope layer is for be made up of two-layer above aqueous polyurethane coating, the thickness of every layer of aqueous polyurethane coating is 0.1 ~ 10 μm, when adopting stock of the present invention to carry out lithographic plate or intaglio ink, ink containing printing information need be printed directly to the coating of this stock, and be directly combined with coating, thus formation ink, strong construction between coating and precoated shet.
Described plastic basis material is the composite membrane be made up of at least one in polypropylene, polyethylene, ethylene-vinyl alcohol copolymer, ethylene-propylene copolymer, polyester, nylon (can be the individual layer composite membrane that a kind of material is formed, also can be the multilayer complex films containing wherein two or more material, namely the composite membrane of at least one sandwich layer and two surface layers is contained), the thickness of plastic basis material is 5 ~ 150 μm.
Described film pretreatment coating comprises a kind of in aqueous polyurethane and polyisocyanates or their combination.
Described dope layer surface is provided with embossing.
Its surface is formed with the district of windowing of certain area, and the light transmittance in this district of windowing is less than the light transmittance of other parts.
The manufacture method of the above-mentioned stock for security document is introduced by two embodiments:
Embodiment one:
Step one: prepared by film pretreatment coating: solid content is the emulsion-type polyurethane of 35%, and accounting for gross mass ratio is 15%; It is 0.5% that polyisocyanates accounts for gross mass ratio, and all the other are deionized water;
Step 2: prepared by aqueous polyurethane coating: it is 25% that powder pigment titanium dioxide accounts for aqueous polyurethane coating mass ratio, it is 5% that powder silica accounts for aqueous polyurethane coating mass ratio, pigmentary titanium dioxide particle size range 0.5 ~ 20 μm, pigment silica particle size range 0.01 ~ 0.1 μm; Aqueous polyurethane binder selects emulsion-type polyurethane resin, its solid content 35%, viscosity 400 ~ 500mPas, and it is 55% that aqueous polyurethane binder accounts for aqueous polyurethane coating mass ratio; Surfactant is wetting dispersing agent, antistatic additive and defoamer, and the mass ratio that surfactant accounts for aqueous polyurethane coating is 15%, and the solid content of aqueous polyurethane coating is 40 ~ 42%;
Step 3: film pretreatment: select a kind of thickness to be biaxial tension PETG (PET) plastic sheeting of 75 μm, by the mode of off-line, corona pre-treatment is carried out to its two sides, then the film pretreatment coating made in priming step one carries out primary coat coating pretreatment, carry out infrared ray online dry immediately after coating, baking temperature controls at about 110 DEG C;
Step 4: coating and printing: on many group printing machines, utilize the mode of flexographic printing and intaglio printing, by the reverse fluted roller with scraper, the coating process of online surface is carried out respectively to the two sides of pretreated plastic films, the every face of aqueous polyurethane coating of preparing in step 2 is adopted to carry out four layers of coating, every layer of coating weight is about 2g/m2, often carry out infrared ray online dry immediately after group coating, baking temperature controls at about 110 DEG C;
Step 5: embossing heat treatment: after the coating drying of step 4, it is made to be that 110 DEG C have between the metal fever knurling rolls of raised design and back flow roll carries out heat embossing process by temperature, subsequently by the film after heat embossing by cold roller or coldly just carry out cooling processing, finally obtain a kind of have certain anti-counterfeiting performance and strength character, the stock of hectograph and intaglio ink can be met;
Step 6: curling.
Embodiment two:
Step one: prepared by film pretreatment coating: solid content is the emulsion-type polyurethane of 35%, and accounting for gross mass ratio is 15%; It is 0.5% that polyisocyanates accounts for gross mass ratio, and all the other are deionized water;
Step 2: prepared by aqueous polyurethane coating: it is 20% that powder pigment titanium dioxide accounts for aqueous polyurethane coating mass ratio, titanium dioxide particle size range 0.1 ~ 10 μm, and talcum powder accounts for 10%, particle size range 0.5 ~ 30 μm; Coating binder selects a kind of emulsion-type polyurethane resin, its solid content 40%, viscosity 600 ~ 650mPas, and it is 50% that polyurethane accounts for aqueous polyurethane coating mass ratio; It is 10% that surfactant accounts for aqueous polyurethane coating mass ratio, and surfactant comprises wetting dispersing agent, antistatic additive and defoamer; It is 10% that deionized water accounts for aqueous polyurethane coating mass ratio, and the final solid content of coating is 30 ~ 35%;
Step 3: film pretreatment: Biaxially oriented polypropylene (PP) plastic sheeting selecting a kind of thickness 90 μm, by online mode, corona pre-treatment is carried out to its two sides, then the film pretreatment coating made in priming step one carries out primary coat coating pretreatment, carry out infrared ray online dry immediately after coating, baking temperature controls at about 110 DEG C;
Step 4: coating and printing:
Utilize inverse roller coating mode for cloth, the coating process of online surface is carried out respectively to the two sides through pretreated plastic films, the every face of aqueous polyurethane coating of preparing in step 2 is adopted to carry out six layers of coating, every layer of coating weight is about 2g/m2, often carry out hot blast and infrared ray combination online dry after group coating immediately, baking temperature controls at about 110 DEG C.
Step 6: dried film carries out curling subsequently and cuts process, namely finally becomes the stock product of applicable offset lithography and gravure.
Claims (7)
1. the stock for security document, comprise plastic basis material (1), precoated shet (2) and dope layer (3), described precoated shet and dope layer are fixedly arranged at least one side surface of plastic basis material successively, it is characterized in that: described precoated shet (2) is coated in plastic basis material surface by film pretreatment coating and the coating formed after heated drying, described dope layer (3) is through being coated in precoated shet surface at least one times and the coating formed after heated drying by aqueous polyurethane coating, described aqueous polyurethane coating is by the aqueous polyurethane binder accounting for coating solid total amount 30-60%, account for the hiding pigment particle of coating solid total amount 20-35%, the surfactant accounting for coating solid total amount 15-20% and the deionized water accounting for coating solid total amount 0-20% composition, described dope layer is for be made up of two-layer above aqueous polyurethane coating, the thickness of every layer of aqueous polyurethane coating is 0.1 ~ 10 μm, described dope layer surface is provided with embossing, its surface is formed with the district of windowing of certain area, the light transmittance in this district of windowing is less than the light transmittance of other parts.
2. as claimed in claim 1 for the stock of security document, it is characterized in that: described plastic basis material is the composite membrane be made up of at least one in polypropylene, polyethylene, ethylene-vinyl alcohol copolymer, ethylene-propylene copolymer, polyester, nylon, the thickness of plastic basis material is 5 ~ 150 μm.
3. as claimed in claim 1 for the stock of security document, it is characterized in that: described film pretreatment coating comprises a kind of in aqueous polyurethane and polyisocyanates or their combination.
4., as claimed in claim 1 for a stock manufacture method for security document, it is characterized in that: concrete steps are as follows:
Step one: prepared by film pretreatment coating: select at least one in aqueous polyurethane and polyisocyanates to mix;
Step 2: prepared by aqueous polyurethane coating:
Each material is carried out mixing and stirs evenly formation aqueous polyurethane coating;
Step 3: film pretreatment:
Carry out corona pre-treatment at least one side surface of plastic basis material, then primary coat film pretreatment coating carries out coating pretreatment, forms precoated shet after heated drying on plastic basis material surface;
Step 4: coating and printing:
By the aqueous polyurethane coating prepared in step 2 through being coated on precoated shet surface at least one times, then carrying out heated drying process and forming dope layer;
Step 5: curling.
5. as claimed in claim 4 for the stock manufacture method of security document, it is characterized in that: in described step 3 and step 4, heated drying is treated to a kind of in heated-air drying and infra-red drying or their combination, and baking temperature is 60 ~ 140 DEG C.
6. as claimed in claim 4 for the stock manufacture method of security document, it is characterized in that: described aqueous polyurethane binder comprises at least one in water soluble polyurethane resin and emulsion-type polyurethane resin, the solid content of aqueous polyurethane binder is 10 ~ 40%, and viscosity is 0.1 ~ 1000mpas; Hiding pigment is at least one in titanium dioxide, kaolin, silica, talcum, calcium carbonate, bentonite, diatomite, hiding pigment particle diameter is 0.1 ~ 50 μm, and surfactant comprises at least one in wetting agent, dispersant, crosslinking agent, stabilizing agent, plasticizer, drying retardant, defoamer, delustering agent and antistatic additive.
7., as claimed in claim 4 for the stock manufacture method of security document, it is characterized in that: to the process of dried dope layer heat embossing after step 4, metallic roll hot pressing temperature is between 60 ~ 150 DEG C, and linear pressure is between 10 ~ 100kN/cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210256766.7A CN103568618B (en) | 2012-07-24 | 2012-07-24 | For stock and the manufacture method thereof of security document |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210256766.7A CN103568618B (en) | 2012-07-24 | 2012-07-24 | For stock and the manufacture method thereof of security document |
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| Publication Number | Publication Date |
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| CN103568618A CN103568618A (en) | 2014-02-12 |
| CN103568618B true CN103568618B (en) | 2016-01-20 |
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| CN201210256766.7A Active CN103568618B (en) | 2012-07-24 | 2012-07-24 | For stock and the manufacture method thereof of security document |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105415904A (en) * | 2015-11-05 | 2016-03-23 | 广东金冠科技股份有限公司 | Printing production method capable of printable electrostatic adhesive film |
| CN106638128B (en) * | 2016-10-12 | 2018-12-04 | 安徽集友纸业包装有限公司 | Oleophobic hydrophilic coating and preparation method thereof for cigarette tipping paper |
| CN110722897A (en) * | 2019-11-28 | 2020-01-24 | 徐州太平洋印务有限公司 | Printing template |
| CN113299182A (en) * | 2021-05-30 | 2021-08-24 | 蒋天有 | Anti-counterfeit label and manufacturing process thereof |
| CN113682031A (en) * | 2021-10-18 | 2021-11-23 | 凌翼智联环保科技(上海)有限公司 | Novel environment-friendly fiber glass paper composite preparation method |
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| US5300326A (en) * | 1993-01-22 | 1994-04-05 | Ppg Industries, Inc. | Method of coating a plastic substrate with an aqueous coating composition for plastic substrates |
| CN1176404A (en) * | 1996-07-12 | 1998-03-18 | 柯尼卡株式会社 | Information-recording material |
| CN1547527A (en) * | 2001-08-01 | 2004-11-17 | PPG��ҵ����˾ | Water resistant ink jet printable sheet |
| CN101147902A (en) * | 2007-11-08 | 2008-03-26 | 海南现代高科实业有限公司 | Using method and product of water polyurethane used for coating prime glue |
| CN102069617A (en) * | 2009-11-20 | 2011-05-25 | 尤尼吉可株式会社 | Hot water resistant polyamide thin layer and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009090521A (en) * | 2007-10-05 | 2009-04-30 | Dainippon Printing Co Ltd | Manufacturing method of thermal transfer image receiving sheet |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5300326A (en) * | 1993-01-22 | 1994-04-05 | Ppg Industries, Inc. | Method of coating a plastic substrate with an aqueous coating composition for plastic substrates |
| CN1176404A (en) * | 1996-07-12 | 1998-03-18 | 柯尼卡株式会社 | Information-recording material |
| CN1547527A (en) * | 2001-08-01 | 2004-11-17 | PPG��ҵ����˾ | Water resistant ink jet printable sheet |
| CN101147902A (en) * | 2007-11-08 | 2008-03-26 | 海南现代高科实业有限公司 | Using method and product of water polyurethane used for coating prime glue |
| CN102069617A (en) * | 2009-11-20 | 2011-05-25 | 尤尼吉可株式会社 | Hot water resistant polyamide thin layer and manufacturing method thereof |
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| CN103568618A (en) | 2014-02-12 |
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Address after: No. 1188 Zhenchuan East Road, Kunshan City, Suzhou City, Jiangsu Province 215300 Patentee after: KUNSHAN BANKNOTE PAPER Co.,Ltd. Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: No. 1188 Zhenchuan East Road, Kunshan City, Suzhou City, Jiangsu Province 215300 Patentee before: KUNSHAN BANKNOTE PAPER Co.,Ltd. Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |
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