阅读说明：本技术 特殊防伪码烫印箔及其制备方法 (Special anti-counterfeiting code hot stamping foil and preparation method thereof ) 是由 魏衍瑞 荆浩 田晨琪 田茂涛 崔若峰 张振 于 2019-09-24 设计创作，主要内容包括：本发明属于防伪产品技术领域,具体的涉及一种特殊防伪码烫印箔及其制备方法。由从上到下依次设置的背胶层、铝层和印刷层、全息信息层、成像层、离型层和PET层组成,印刷层印刷的防伪信息由印刷图文和转化成图片形式的特殊防伪码组成。本发明所述的特殊码防伪烫印箔,通过将原始数据转化为图片的形式,然后将转化完成的图片与标识印刷的图像进行排版设计,既可保证隐形码图片的印刷质量,又能够达到高速度印刷的要求,同时又可进行一标一码的可变信息赋码,解决了大量商品标识的高速赋码问题；当出现防伪码破坏达到75％时,仍然能够识读,纠错率高,且防伪码不易被复制。(The invention belongs to the technical field of anti-counterfeiting products, and particularly relates to a special anti-counterfeiting code hot stamping foil and a preparation method thereof. The anti-counterfeiting printing paper comprises a back glue layer, an aluminum layer, a printing layer, a holographic information layer, an imaging layer, a release layer and a PET layer which are sequentially arranged from top to bottom, wherein anti-counterfeiting information printed on the printing layer comprises printing pictures and texts and special anti-counterfeiting codes converted into picture forms. According to the special code anti-counterfeiting hot stamping foil, original data are converted into the form of the picture, then the converted picture and the image printed by the identification are subjected to typesetting design, so that the printing quality of the invisible code picture can be ensured, the requirement of high-speed printing can be met, variable information coding of one mark and one code can be performed, and the problem of high-speed coding of a large number of commodity identifications is solved; when the damage of the anti-counterfeiting code reaches 75%, the anti-counterfeiting code can still be identified and read, the error correction rate is high, and the anti-counterfeiting code is not easy to copy.)

1. A special anti-counterfeiting code hot stamping foil is characterized in that: the anti-counterfeiting printing paper comprises a back glue layer, an aluminum layer, a printing layer, a holographic information layer, an imaging layer, a release layer and a PET layer which are sequentially arranged from top to bottom, wherein anti-counterfeiting information printed on the printing layer comprises printing pictures and texts and special anti-counterfeiting codes converted into picture forms.

2. The special security code stamping foil according to claim 1, wherein: the special anti-counterfeiting code is used for converting common anti-counterfeiting information into any shape consisting of small black dots in a picture form.

3. The special security code stamping foil according to claim 2, wherein: the special anti-counterfeiting code consists of black dots with the diameter of 18-25 mu m, and the density of the black dots is 10-15 per square millimeter.

4. The special security code stamping foil according to claim 1, wherein: the aluminum layer and the printing layer are both positioned on the same layer and positioned on the holographic information layer, and the realization method comprises the steps of firstly washing off the aluminum layer at the specified position by utilizing an aluminum washing technology, and then printing anti-counterfeiting information at the aluminum washing position by utilizing a printer to form the printing layer by utilizing a secondary overprinting technology.

5. The special security code stamping foil according to claim 1, wherein: the thickness of the holographic information layer is 1.5-2.5 μm, wherein the laser pattern on the holographic information layer is transferred to the imaging layer by mould pressing.

6. The method for preparing the special anti-counterfeiting code hot stamping foil as claimed in claim 1, is characterized in that: the method comprises the following steps:

(1) converting common data into special anti-counterfeiting codes in the form of pictures by using a digital converter, wherein the shapes of the pictures can be molded at will;

(2) writing a special anti-counterfeiting code segmentation program, fusing special anti-counterfeiting code pictures and printed image-text contents by using VB or NET language to ensure that the appearance of the hot stamping foil is not influenced by the special anti-counterfeiting code;

(3) sending the debugged template to a printing machine by using pre-printing emission software to wait for printing;

(4) selecting PET as a base material, and coating a water-based modified polyurethane finish on a non-corona surface to form a release layer;

(5) coating an information layer coating on the release layer surface to form an imaging layer;

(6) pressing the laser graph-text on the imaging layer by adopting a mould pressing and gravure printing integrated machine to form a holographic information layer and printing washing ink on the aluminum washing part;

(7) plating aluminum on the holographic information layer;

(8) washing off the aluminized layer of the aluminum-washed part by using an aluminum washing machine to form a printed part;

(9) performing mirror image printing on a printing part by using a printer to form a printing layer, wherein the printing content is anti-counterfeiting information consisting of pictures and texts and special anti-counterfeiting codes converted into picture forms;

(10) and coating the back glue on the printing surface by using a coating machine to form a back glue layer.

7. The method for preparing the special anti-counterfeiting code hot stamping foil according to claim 6, characterized in that: the thickness of the PET substrate in the step (4) is 15-20 μm; the waterborne modified polyurethane finish paint selects WF-77-244 coating liquid produced by Steyr fine paint company Limited; the number of the coating roller is 150-200 meshes, the temperature is 90-120 ℃, the speed is 50-70 m/min, and the dry coating amount is 1.3-1.6g/m²。

8. The method for preparing the special anti-counterfeiting code hot stamping foil according to claim 6, characterized in that: the information layer coating in the step (5) is a mixture of PET-70A, PET-251H, PET800-800 and a diluent; the diluent is a mixture of butanone and cyclohexanone.

9. The method for preparing the special anti-counterfeiting code hot stamping foil according to claim 6, characterized in that: the gum in the step (10) is a mixture consisting of 533 resin, toluene, butanone, isopropanol and silicon dioxide, wherein: 533 mass ratio of resin, toluene, butanone, isopropanol and silicon dioxide is 50: 35: 30: 4: 15.

10. the method for preparing the special anti-counterfeiting code hot stamping foil according to claim 6, characterized in that: the coating back glue in the step (10) adopts a coating anilox roller, the mesh number of the coating plate roller is 150 meshes, the coating speed is 130m/min, and the coating moisture content is 9.5g/m²The temperature of the coating drying tunnel is 135 ℃.

Technical Field

The invention belongs to the technical field of anti-counterfeiting products, and particularly relates to a special anti-counterfeiting code hot stamping foil and a preparation method thereof.

Background

At present, two-dimensional codes are widely applied to various industries and daily life of people, and are rapidly read by a reader with a camera, compared with the prior bar codes, the two-dimensional codes can store more abundant information, but the two-dimensional codes still face self problems and external challenges.

Because the two-dimensional code is square and is directly printed on the plane base material according to black and white, the appearance of certain products is greatly influenced, and the two-dimensional code visible to naked eyes is easily copied and has low safety. The existing two-dimensional code is printed on a commodity or other carriers in a black-and-white mode and is visible to naked eyes, so that the appearance of the product is influenced, and convenience is provided for counterfeiters and the safety is influenced due to the fact that the two-dimensional code is directly visible.

In recent years, as social network sites use two-dimensional codes for network login, commodity publicity and the like, people have developed a living habit of reading two-dimensional codes, and the two-dimensional codes are widely known, so that the vigorous development in society not only facilitates the lives of people, but also puts new requirements on the development of the two-dimensional codes.

The current hot stamping foil mainly has two types, one type is ordinary hot stamping foil, and this type of hot stamping foil only possesses holographic anti-fake function, is imitated at present very easily by lawless persons, and another type is digital holographic hot stamping foil, collects digital anti-fake and holographic anti-fake as an organic whole, has improved the anti-fake dynamics of hot stamping foil greatly, and the beautiful shortcoming is because the gum of hot stamping foil pastes the performance less, appears the quality problem of fish tail two-dimensional code easily, leads to the unable recognition of two-dimensional code.

CN 206551590 two-dimensional code thermoprint membrane of a two-dimensional code thermoprint that has transparent holographic anti-fake layer "the two-dimensional code of thermoprint foil is formed through the technology of washing the aluminium, and the technology of washing the aluminium is known in the art, moreover because the stripping effect of thermoprint foil is not good, can lead to the aluminize layer to peel off unclean, will make the two-dimensional code can't discern like this.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: overcomes the defects of the prior art and provides a special anti-counterfeiting code hot stamping foil. The anti-counterfeiting code adopted by the hot stamping foil is a hidden code which does not reduce the attractiveness of commodity packaging, can realize quick and accurate identification, has high error correction rate, and can be accurately identified and read when the anti-counterfeiting code is damaged.

The special anti-counterfeiting code hot stamping foil comprises a back glue layer, an aluminum layer, a printing layer, a holographic information layer, an imaging layer, a release layer and a PET layer which are sequentially arranged from top to bottom, wherein anti-counterfeiting information printed on the printing layer comprises printing pictures and texts and special anti-counterfeiting codes converted into pictures.

Wherein:

the special anti-counterfeiting code is used for converting common anti-counterfeiting information into any shape consisting of small black dots in a picture form.

The special anti-counterfeiting code consists of black dots with the diameter of 18-25 mu m, and the density of the black dots is 10-15 per square millimeter.

The special anti-counterfeiting code is given to any position of the printing layer in a printing mode, can be coincided with other printing pictures and texts, and does not need to reserve a printing position.

The aluminum layer and the printing layer are both positioned on the same layer and positioned on the holographic information layer, and the realization method is that the aluminum layer at the specified position is washed off by utilizing the aluminum washing technology, and then the anti-counterfeiting information is printed at the aluminum washing position by utilizing the printer to form the printing layer by utilizing the secondary overprinting technology.

The square resistance of the aluminum layer is 1.8-2.2 omega.

The thickness of the holographic information layer is 1.5-2.5 μm, wherein the laser pattern on the holographic information layer is transferred to the imaging layer by mould pressing.

The release layer can be rapidly dissolved at the high temperature of 210 ℃ and the high pressure of 0.3-0.5MPa so that the holographic information layer completely falls off and is rapidly separated from the PET layer.

The preparation method of the special anti-counterfeiting code hot stamping foil comprises the following steps:

(1) converting common data into special anti-counterfeiting codes in the form of pictures by using a digital converter, wherein the shapes of the pictures can be molded at will;

(2) writing a special anti-counterfeiting code segmentation program, fusing special anti-counterfeiting code pictures and printed image-text contents by using VB or NET language to ensure that the appearance of the hot stamping foil is not influenced by the special anti-counterfeiting code;

(3) sending the debugged template to a printing machine by using pre-printing emission software to wait for printing;

(4) selecting PET as a base material, and coating a water-based modified polyurethane finish on a non-corona surface to form a release layer;

(5) coating an information layer coating on the release layer surface to form an imaging layer;

(6) pressing the laser image-text on the imaging layer by adopting a mould pressing and gravure printing integrated machine to form a holographic information layer, and printing washing ink on the aluminum washing part to form the holographic information layer;

(7) plating aluminum on the holographic information layer to form an aluminum layer;

(8) washing off the aluminized layer of the aluminum-washed part by using an aluminum washing machine to form a printed part;

(9) performing mirror image printing on a printing part by using a printer to form a printing layer, wherein the printing content is anti-counterfeiting information consisting of pictures and texts and special anti-counterfeiting codes converted into picture forms;

(10) and coating the back glue on the printing surface by using a coating machine to form a back glue layer.

Wherein:

the thickness of the PET substrate in the step (4) is 15-20 μm; as the aqueous modified polyurethane top coat, WF-77-244 coating liquid manufactured by Steyr Fine coatings Co., Ltd is preferably used.

The mesh number of the coating roller in the step (4) is 150 meshes and 200 meshes, the temperature is 90-120 ℃, the vehicle speed is 50-70 m/min, and the dry coating amount is 1.3-1.6g/m²。

The information layer coating in the step (5) is a mixture of PET-70A, PET-251H, PET800-800 and a diluent; wherein the mass ratio of PET-70A, PET-251H, PET800-800 to diluent is 4: 1: 1: 4.5.

the diluent is a mixture of butanone and cyclohexanone, and the mass ratio of the butanone to the cyclohexanone is 85: 15.

the coating plate roller in the step (5)The mesh number is 180-200 meshes, the drying channels of the coating oven are 5 groups, the temperature is 100-145-175-145 ℃, the speed is 60-70 m/min, and the dry coating amount is 1.0-1.25g/m²。

The square resistance value of the aluminum layer in the step (7) is 1.8-2.2 omega.

The gum in the step (10) is a mixture consisting of 533 resin, toluene, butanone, isopropanol and silicon dioxide, wherein: 533 mass ratio of resin, toluene, butanone, isopropanol and silicon dioxide is 50: 35: 30: 4: 15.

the 533 resin manufacturer is Fushan City cumulative packaging materials Co.

The coating back glue in the step (10) adopts a coating anilox roller, the mesh number of the coating plate roller is 150 meshes, the coating speed is 130m/min, and the coating moisture content is 9.5g/m²The temperature of the coating drying tunnel is 135 ℃.

The special anti-counterfeiting code of the special code anti-counterfeiting hot stamping foil can still identify the standard image by destroying 75 percent.

As a preferred technical scheme, the preparation method of the special anti-counterfeiting code hot stamping foil comprises the following steps:

(1) the common data is converted into special anti-fake code in the form of picture by digital converter, and the picture shape can be arbitrarily shaped.

(2) Writing a special anti-counterfeiting code segmentation program, fusing the special anti-counterfeiting code picture and the printed image-text content by VB or NET language to ensure that the appearance of the anti-counterfeiting label is not influenced by the special anti-counterfeiting code.

(3) And sending the debugged template to an indigo printer to wait for printing by using prepress emission software.

(4) Selecting PET of 15-20 μm as base material, coating water-modified polyurethane finish (WF-77-244 coating liquid produced by Steyr Fine coating Co., Ltd.) on the non-corona surface to form a release layer, wherein the mesh number of the coating roller is 150 meshes, the temperature is 90-120 ℃, the speed is 50-70 m/min, and the dry coating amount is 1.3-1.6g/m²。

(5) Coating a new information layer coating (such as high temperature resistant information produced by Cure technology, Inc., of Bangdong province)Layer coating: proportioning PET-70A: PET-251H: PET 800-800: diluent 4: 1: 1: 4.5; diluent agent: butanone: 85:15) to form an imaging layer, the number of coating roller is 180-200 meshes, the temperature of a coating oven is 100-145-175-145 ℃, the speed of the coating oven is 60-70 m/min, and the dry coating amount is 1.0-1.25g/m²。

(6) And forming a holographic information layer on the imaging layer by mould pressing through a mould pressing and gravure printing integrated machine, and printing washing ink on the aluminum washing part to form the holographic information layer.

(7) And plating aluminum on the holographic information layer, wherein the resistance value of the aluminum plating layer is 1.8-2.2 omega.

(8) And washing the aluminized layer of the aluminum-washed part by using an aluminum washing machine to form a printed part.

(9) And (4) performing mirror image printing at the printing part by using indigo, wherein the printing content comprises pictures and texts and a special anti-counterfeiting code converted into a picture form.

(10) Coating gum on the printing surface by using a coating machine; wherein the formula of the back adhesive comprises: 533 g of resin, 35 g of toluene, 30 g of butanone, 4g of isopropanol and 15g of silicon dioxide. The coating process comprises the following steps: coating anilox roller 150 mesh, coating speed: 130m/min, moisture content of coating: 9.5g/m²And the temperature of the drying tunnel: 135 ℃ is adopted.

According to the preparation method of the special anti-counterfeiting code hot stamping foil, the printing layer is printed in a plateless mode, namely, the printing requirements of special anti-counterfeiting codes can be met due to the fact that small black dots of special codes are not printed completely and are arranged wrongly in the small black dots, the resolution ratio of an image of a Hewlett packard printing machine is 2438x2438 dpi, and the special anti-counterfeiting codes are printed by using electronic ink.

The PET layer is a carrier of other layers, after hot stamping, the PET layer can be peeled off and recycled as a waste, the release layer is water wax, the other layers are peeled off from the PET after preheating and melting, the imaging layer is used for copying the holographic pattern from the upper surface of the nickel plate to the imaging layer, the holographic information layer is the holographic pattern and holographic anti-counterfeiting characteristic generated on the imaging layer by a soft pressing process, the printing layer is not separated from the imaging layer, the printed pattern is attached to the imaging layer and cannot be separated, the aim is to improve the aesthetic degree of the hot stamping foil, simultaneously add some plate-making anti-counterfeiting characteristics and printing anti-counterfeiting characteristics during printing, sequentially improve the anti-counterfeiting strength of the hot stamping foil, the layer is firmly bonded with the imaging layer, the aluminum plating layer is firmly bonded with the imaging layer, the back glue layer is coated to cover the whole surface of the hot stamping foil and the surface contacted with other layers can not be separated.

Because the special anti-counterfeiting code is formed by converting the digital code into a plurality of same black dots and randomly arranging the black dots, and finally forming a calculation program to be stored in the database, the residual 25 percent is utilized, and the black dots and the arrangement rule on the residual black dots can still calculate the overall rule, so that the authenticity can be found out.

Compared with the prior art, the invention has the following beneficial effects:

(1) according to the special code anti-counterfeiting hot stamping foil, the special anti-counterfeiting code adopted in the printing layer is a hidden code which does not reduce the attractiveness of commodity packages, can be quickly and accurately identified, can form vector data, and can be used for batch printing of high-speed variable information.

(2) The anti-counterfeiting hot stamping foil with the special codes has the advantages that the original data are converted into the form of the picture, then the converted picture and the image printed by the marks are subjected to typesetting design, the printing quality of the invisible code picture can be ensured, the requirement on high-speed printing can be met, variable information coding of one mark and one code can be carried out, and the problem of high-speed coding of a large number of commodity marks is solved.

(3) When the anti-counterfeiting code is damaged to 75%, the special code anti-counterfeiting hot stamping foil can still be identified and read, the error correction rate is high, and the anti-counterfeiting code is not easy to copy, so that the phenomenon that consumers cannot inquire authenticity due to scratching of the hot stamping foil is avoided.

(4) The preparation method of the special code anti-counterfeiting hot stamping foil has obvious anti-counterfeiting characteristics and strong anti-counterfeiting exclusivity.

Detailed Description

The present invention is further described below with reference to examples.