Discussion on anti fake printing of the hottest pa

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Discussion on packaging anti-counterfeiting printing

the prevalence of fake and shoddy products has become a major cancer that hinders economic development and interferes with the order of China's market economy. How to use product packaging for effective anti-counterfeiting is a major issue we are facing. However, packaging anti-counterfeiting is a wide-ranging topic, such as decoration anti-counterfeiting, printing anti-counterfeiting, bar code, code anti-counterfeiting, comprehensive anti-counterfeiting of management technology, comprehensive anti-counterfeiting of ancillary products and functions, scrapping technology and warning technology anti-counterfeiting, etc. This paper will discuss the process methods and development of anti-counterfeiting in product packaging and printing

1 requirements for packaging anti-counterfeiting printing

packaging anti-counterfeiting printing refers to the implementation of anti-counterfeiting technology when printing graphic information on packaging products. It has the following characteristics:

1) beautiful. Packaging printing can greatly improve the artistic effect of printing, endow products with new vitality, stimulate consumers' desire to buy, and improve the added value of products

2) anti counterfeiting. Using special design, special materials, special technology and special equipment to process packaged prints has a unique effect that is difficult to copy and plays an anti-counterfeiting role

3) practical. As a packaging printed matter, it is mainly used for packaging. Specific packaging practicability must be considered in printing processing, such as lamination, glazing, die cutting, indentation, etc. The process flow of packaging anti-counterfeiting printing is: pre press anti-counterfeiting design - anti-counterfeiting printing material selection - anti-counterfeiting plate making, printing - post press anti-counterfeiting processing, which will be described one by one below

2 prepress anti-counterfeiting design

prepress anti-counterfeiting design mainly refers to the structural design, modeling design and decoration design of packaging products. The design contents of these three parts not only have certain mutual independence, but also have mutual integration and coordination relevance. J through the perfect combination of the three, the requirements of "science, beauty, applicability, anti-counterfeiting, economy, promotion and environmental protection" of packaging anti-counterfeiting design are realized. For example, many exquisite and fine patterns and geometric patterns are used on the packaging prints to prevent counterfeiters from using color copiers and electronic extension scanners to forge; Use colorless ink or special ink similar to the color of the bottom paper to print on the bottom paper. If you look closely, the effect is very exquisite. Regular dense patterns or irregular texture patterns achieve better anti-counterfeiting effect; We can also use design means such as miniaturized words and secret marks in hidden places. For example, some words related to commodities can be miniaturized into small words that can be discerned by the naked eye and embedded somewhere, or some larger and more obvious character strokes can be removed with a gap, which makes people mistakenly think that it is a defect in printing; Or adding a few line points in the fine geometric pattern is also an excellent method of anti-counterfeiting design; In the structural design, the new anti-counterfeiting structure of opening the box cover and non opening the box bottom is adopted. This box body can not be reused again, so the anti-counterfeiting effect is very good

3 packaging anti-counterfeiting printing materials

packaging anti-counterfeiting printing materials are diverse, but mainly paper and ink, which have special requirements

3.1 anti counterfeiting paper

in the papermaking process, various anti-counterfeiting papers are made by using various anti-counterfeiting technologies to print packaging labels or packaging paper, so as to achieve the purpose of anti-counterfeiting. At present, there are mainly the following paper anti-counterfeiting technologies

1) laser holography. Using laser holography technology, the laser hologram pattern is directly made on paper to produce laser hologram anti-counterfeiting paper

2) watermarking technology. In the process of paper forming, when the paper is just interwoven and still contains a certain amount of water, this technology uses a watermark with engraved lines to roll and imprint the paper surface, so that part of the tissue of the wet paper is displaced to form various graphic, digital or text watermarks with different fiber densities and light and dark textures

some enterprises have also filed their special watermark patterns with specific management departments. At the same time, paper enterprises no longer manufacture the same special-purpose paper for other users. Although this has increased the cost of paper, it has also greatly increased the forgery cost, and its anti-counterfeiting effect is relatively ideal

3) special additive technology

(1) add colored fiber. Colored fiber is a kind of colored fiber distributed on the paper, which is different from the color of the paper. Its color, length, thickness, embedding degree and distribution position are different

(2) join the safety line. Safety wire refers to the opaque strip-shaped metal or plastic narrow band embedded in the paper in whole or in part, which often carries transparent or holographic micro text information, magnetic information, etc. The production of safety line requires high papermaking technology and complex process, especially the safety line with windows (intermittent exposure). One section of this safety line is buried in the paper, and the other section is exposed on the paper, so it is very difficult to forge. In recent years, a thermal safety wire has been introduced, which is pink and opaque at room temperature. When the finger is used to heat the local area, as long as it reaches 37~c, the local micro printed text will appear

(3) add fluorescent fiber. In the process of papermaking, colorless fluorescent fiber strips are added to the pulp according to the proportion. This kind of paper can display fluorescent fiber strips under the excitation of ultraviolet light, playing the function of public recognition

(4) trace additives are added. Using the principle that organisms have specific reaction of anti elements, a very small amount of anti elements are added to a part of pulp or paper. During the detection, the corresponding specific antibody is combined with it, and the authenticity can be identified by the presence or absence of color, fluorescence and other marker reactions

4) chemical technology. Special compounds are added to the pulp or when sizing the paper surface to make chemical products. Characteristics: full automatic control: high performance speed regulation system makes the experimental machine digital and automatic control; Software system: adopt full digital LCD controller to learn encryption paper, which can develop color or fluorescence when coated with specific chemical reagent

5) special equipment technology. When making paper, special equipment, such as ion medium special anti-counterfeiting paper, is used. Relying on the large-scale heavy ion accelerator specially controlled by the state, the super energy ion medium special anti-counterfeiting paper is produced by integrating the ion micropore technology with the papermaking technology. For example, laser anti-counterfeiting paper can be made by combining laser anti-counterfeiting technology and special equipment with papermaking

3.2 anti counterfeiting ink

anti counterfeiting ink is to add special functional materials to ordinary ink, so it has anti-counterfeiting function. The anti-counterfeiting products obtained by printing with this ink have low cost and convenient inspection. The anti-counterfeiting ink has the following preparation methods: when the experimental force exceeds the maximum experimental force by 2~10%, it will stop automatically

also points out the direction for the development of plastic granulator technology in China. 1) adopt mechanical methods (force induced deformation, force induced heating, force induced sound, etc.)

for example, the "latecomer" tansongbin appears confident. The outer layer of its special functional material is a microcapsule, and the inner layer is filled with dye. It is mixed with ordinary ink and printed. During inspection, it only needs to exert strong pressure on the surface of the logo. Due to external force, the capsule breaks and releases dye, and the color changes immediately. The color of the capsule dye can be selected arbitrarily to obtain a variety of anti-counterfeiting effects

2) thermodynamic method (thermochromic, thermochromic luminescence) was used. For example, adding thermochromic materials to ink, if the ambient temperature changes, the color will change accordingly to achieve the anti-counterfeiting effect

3) adopt electrical methods (electrochromism, electroluminescence). For example, electrochromic inks add some functional materials (such as tungsten trioxide, conductive polymers, etc.) to ordinary inks. When DC voltage acts on them, the structure of functional materials changes, which will change the appearance color of inks

4) adopt optical methods (photochromism, photoluminescence, invisible discoloration, etc.). For example, fluorescent ink, which adds fluorescent materials to ordinary ink, will radiate visible light when irradiated by ultraviolet light, so as to achieve the purpose of anti-counterfeiting

5) according to the needs of customers, adopt the anti-counterfeiting ink formula with special commodity brand, and use the anti-counterfeiting ink products with strong uniqueness and characterization to achieve the purpose of protecting products

4 anti counterfeiting plate making and printing

graphic information on packaging materials needs to be reproduced through printing. Traditional analog printing and modern digital printing can be used during printing. As the printing of packaging materials is generally in large quantities, traditional analog printing is mostly used at present, and plate making is required. Therefore, in order to meet the requirements of anti-counterfeiting, special plate making technologies and methods that are difficult to copy are generally adopted, such as manual engraving of local patterns of RMB, which makes the printing effect difficult to copy. Similarly, although gravure printing usually used has a certain anti-counterfeiting effect, it is easy to copy. Therefore, printing cannot only be the same as general printing (flat, convex, concave, hole). It should use a variety of processes such as flat, convex, concave, hole and so on to achieve a certain anti-counterfeiting effect. For example, the combination of flat, convex, hole and inkjet printing is used in the printing of scratch lottery tickets, which has a good anti-counterfeiting effect. Another example is the multi-color serial printing technology, which can print multiple colors at one time, and the transition between the patterns is soft, which is difficult to copy

5 post press anti-counterfeiting processing

post press anti-counterfeiting processing is the corresponding surface finishing processing according to the practicality of packaging and anti-counterfeiting requirements, such as film coating, polishing, die cutting, indentation, concave convex embossing, etc. In the processing process, new finishing materials and special processes should be used as far as possible on the premise of meeting the practical requirements. For example, a new type of anti-counterfeiting structure with the opening of the box cover and the non opening of the box bottom. The cover tongue of the opening part of the box cover is sealed together with the cover body by strong bonding. The box bottom is processed into a non opening structure, and there is a breakpoint indentation at the rear of the box body (formed by die cutting at the same time with the box body). Consumers only need to press the box cover with their hands and lift the breakpoint with their thumbs, so as to open the box cover. This box body cannot be reused again, So the anti-counterfeiting effect is very good

6 development of packaging anti-counterfeiting printing

it can be seen from the above content that packaging anti-counterfeiting printing generally adopts the latest materials, the latest technology, the latest design and the latest equipment in all links of packaging product production to implement anti-counterfeiting, so as to achieve the purpose that others are difficult to copy. But with the rapid development of science and technology,. It is far from enough to rely on a single anti-counterfeiting EOB for packaging and anti-counterfeiting. Because counterfeiters are not ordinary people, how to prevent manufacturers, the author believes that the implementation of comprehensive anti-counterfeiting packaging is an effective countermeasure. Comprehensive packaging anti-counterfeiting technology is guided by management science, breaks through the limitations of pure scientific and technological anti-counterfeiting thought, takes packaging materials with strong anti-counterfeiting function as the carrier, organically uses various anti-counterfeiting science and technology and management technology, designs and manufactures packaging products with strong anti-counterfeiting and multi-function according to the restriction law of counterfeiting and distribution of low-quality products and preventing counterfeiting and distribution of low-quality products, And comprehensive anti-counterfeiting technology with mandatory management measures. The comprehensive packaging anti-counterfeiting technology basically includes anti-counterfeiting science and technology, auxiliary product function technology, management technology, basic material technology, eobu technology, structural form technology, warning sign technology and scrap technology. In the production of packaged products, a variety of technologies can be comprehensively used to prevent the counterfeiting of packaged products to the greatest extent

a problem that needs to be emphasized is that at present, packaging anti-counterfeiting eobu often pays attention to anti-counterfeiting, but does not pay attention to the misunderstanding of consumers' recognition ability and level, so the anti-counterfeiting effect is not ideal. At the same time, it is easy to ignore green packaging when packaging, which is not in line with the cycle of sustainable development

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