Overview Of Modern Packaging Anti-counterfeiting Technology (Part 2)

Overview of Modern Packaging Anti-counterfeiting Technology (Part 2)

3. Special gloss printing technology

Special gloss printing technology is a new type of printing technology that has become popular in the packaging industry in recent years. Special gloss printing mainly includes metallic gloss printing, pearl gloss printing, pearl gloss printing, refraction printing, fluorescent printing, variable gloss printing, crystalline gloss printing, imitation metal etching printing and matt printing, etc. Different special gloss printing uses different methods. For example, metal gloss printing uses aluminum foil metal composite paper, which is coated with transparent ink to form a metal gloss; pearl gloss printing first spreads silver paste on the surface of the printed matter, and then applies transparent ink to form pearl gloss effect. ; Pearl gloss printing is to add mica particles to the ink to form the luster of pearl shells; matte printing is to use matte ink or ordinary ink to print and then lay a matte film.

4. Microtext printing and anti-counterfeiting technology

Microtext printing and anti-counterfeiting technology is to use microtext or letters to replace simple outlines or lines, etc., and observe it under a magnifying glass. Microtext generally adopts the method of offset printing, and is completed by a set of offset printing units of the printing machine. Due to the tiny strokes of microtext, the exposure time and the concentration of the flushing liquid should be strictly controlled in the production of film and printing plate, and the pressure of offset printing should be mastered at the same time. Only by strictly controlling the technological process can the microtext be accurate.

5. Engraving and gravure printing technology

Engraving gravure printing mainly uses manual engraving, mechanical engraving and electronic engraving gravure. Since the depth of the gravure indicates the tone level of the pattern and the intensity of the ink color, rainbow printing, wiring printing, pattern butt printing, multi-color overprinting and Printing of invisible patterns, etc., to achieve the purpose of anti-counterfeiting. Its technological process is:

Pre-press preparation - upper version - adjustment rules - printing - post-press processing

6. Multiple printing methods combined with anti-counterfeiting technology

Use different printing methods on the same printed matter, make use of strengths and avoid weaknesses, and give full play to their respective advantages. Due to the complex process and the difficulty of printing, it has a strong anti-counterfeiting function. Some high-end packaging prints are mostly designed with large-area color blocks, multi-color sequential continuous tone pictures, and complex lines, patterns, etc., which are often difficult to achieve with a single printing method. For example, using the flat-embossing technology for anti-counterfeiting, using the advantages of the letterpress printing machine with high pressure and uniform inking, printing a large area of solid color blocks, using the lithographic printing machine's soft pressure and strong pattern layer reproduction ability to print four-color continuous tones and complex lines. For example, for a package with a large area of solid spot color and a photo of the actual product, we can first print the spot color with letterpress printing, and then print the product pattern with lithographic technology, which is more than the usual four-color lithographic printing. A precise overprinting of lithographic and spot color patterns increases the difficulty of printing and improves anti-counterfeiting. According to the characteristics and requirements of the packaging products, multi-process co-printing such as flat, convex, concave and flat, convex, concave and silk can be adopted.

7. Other anti-counterfeiting printing technologies

In addition to the above-mentioned packaging anti-counterfeiting printing processes, many are also applied to food packaging anti-counterfeiting, such as laser coding technology, computer engraving technology, digital inkjet printing, three-dimensional printing, incision printing, transparent paper tape peeling imaging printing, etc. In the actual packaging printing, it is the combination of various printing technologies, which strengthens the anti-counterfeiting ability.

3. Anti-counterfeiting of packaging materials

The anti-counterfeiting of many packages is achieved by packaging materials. The commonly used anti-counterfeiting measures are to add anti-counterfeiting secrets to the packaging materials, such as fiber cardboard and special cardboard for security threads. Fiber cardboard is a material that adds colored or fluorescent colored fine fibers to the material. strips, so that the material contains randomly distributed filaments of different colors. The safety line is a specific position on the surface of the material, which is embedded with a specific metal thin line. When it is observed in the light, a narrow line is revealed. In addition, there are pearl paper, laser iris paper, gold foil paper and silver foil paper that reflect various colors under different light, as well as embossed paper and folding paper formed by reprocessing.

4. Anti-counterfeiting of packaging and printing design technology

1. Color Design Technology

The color design includes the base color of the substrate and the printed surface color during printing. Color design includes color material color anti-counterfeiting, moisture identification color anti-counterfeiting, temperature identification color anti-counterfeiting, acid-base color anti-counterfeiting, etc. In the design, the substrate can be treated with special functions, which has certain confidentiality and exclusiveness, and consumers can easily identify the authenticity. Small fibers of different colors (such as red and blue fibers in banknotes) can be designed in the design, and color configurations and special color transformations can make it difficult for counterfeiters to identify the primary colors of the colors.

2. Orientation design transformation technology

Orientation design transformation technology refers to designing printing patterns, colors, lines and their combinations with anti-counterfeiting features on the surface or interior of commodity packaging and commodities, and quantitatively transforming them according to the number during printing, and numbering them to make the anti-counterfeiting patterns of the outer packaging. Printed on different sides and different edges and corners make it difficult for counterfeiters to find the pattern of counterfeiting.

3. Graphic design technology

On the basis of not affecting the overall effect, many delicate, fine and varied, regular and irregular geometric patterns and geometric pattern groups can be designed. The method of microtext can also be used, such as miniaturizing some text information related to the product into small characters that can be vaguely seen by the naked eye and embedded in a certain position; it is also possible to use a two-color number design with different colors on the left and right halves, such as the left half is red, The right half is black etc. Or remove some larger and more obvious text strokes or add a few line points to the fine geometric pattern to form a hidden design method.

4. Special software application design

Use special software to design special effects. Such as special grating software, the shape of the printed image dots can automatically change with the light and shade of the original image, which is completely different from the mechanism of ordinary FM dots and AM dots to express the tone level of the image. Special drawing software can also be used to design special geometric patterns and print them in spot colors to achieve the purpose of anti-counterfeiting.

In a word, packaging anti-counterfeiting technology is a comprehensive and cross-technical edge discipline. Therefore, to achieve a certain degree of anti-counterfeiting, it must be a combination of various anti-counterfeiting methods, including the combination of "first-line anti-counterfeiting" and "second-line anti-counterfeiting", packaging and printing anti-counterfeiting A combination of design, anti-counterfeiting ink, printing process and anti-counterfeiting of substrates. (references omitted)