Application of the hottest laser holographic forge

2022-08-14
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In recent years, many enterprises, companies and scientific research institutions at home and abroad have developed many new anti-counterfeiting technologies and anti-counterfeiting materials. The research and development of these new materials and technologies have promoted the development and application of anti-counterfeiting packaging materials. At present, the packaging performance of plastic flexible packaging makes it replace the original paper packaging, metal packaging, paper plastic packaging, etc., and it is widely used in the fields of food, medicine, pesticides, washing, cosmetics and so on. The research and development of plastic flexible packaging anti-counterfeiting products with new materials and technologies has formed an upsurge of product innovation and technological innovation in the industry. According to relevant statistics, the proportion of laser holographic anti-counterfeiting mark products in the whole anti-counterfeiting technology products is about 60%. This paper summarizes the application of laser holographic anti-counterfeiting technology in plastic flexible packaging products industry

principle of making laser holographic embossed anti-counterfeiting logo

laser holographic technology has been applied in printing, packaging and promotion for more than ten years. For example, holographic anti-counterfeiting marks can be found on internationally renowned bank credit cards, various licenses, ID cards, driver's licenses, passports, customs documents issued by government departments, coins of some countries, internationally renowned brand clothing, electrical appliances and other items

Design and manufacture of photoresist holographic master

photoresist holographic master is generally divided into "pixel holographic method plus holographic two-step recording method, and the distance between supporting rollers can be adjusted and recorded" and "grating spectral coding method plus holographic two-step recording method"

pixel holography plus hologram two-step recording method

"pixel holography" is also known as "dot matrix holography". It is a computer program that controls two miniature lasers to rotate and expose light, so that when the formed holographic image is observed from different angles, it will produce flickering, jumping and infinitely changing "Rainbow" patterns of various subjects

the selection of patterns is controlled by a computer program. The above is the visual impact of "Rainbow". The further anti-counterfeiting function is completed by the second step of "holography", that is, after the exposure at the point, enter a special three-dimensional image or password at a specific position

grating spectral coding method plus holographic two-step recording method

it uses "grating spectral coding method" to carry out the overall appearance design first. According to the theory of diffraction spectrum of laser holographic grating, each order of spectrum of diffracted light expands into a group of red, yellow, blue and green colors from short wave to long wave, and the distance from diffraction to light source is determined by different grating constants. As long as the angles corresponding to the grating constants of each group are strictly calculated, the intersection angle of the two laser beams forming the grating to the offset plate is accurately mastered, the diffraction spectra of each group of gratings are borrowed from each other by one band, and after burning, multiple groups of alternating rotations are made to different parts of the pattern designed by the computer, the rainbow effect of colorful colors can be observed in multiple directions

characteristics of laser holographic anti-counterfeiting plastic packaging

(1) holographic images can be observed under natural light; It is easy to identify without any tools, which is a major advantage of holographic anti-counterfeiting different from other anti-counterfeiting methods

(2) it is difficult to imitate, wide and full. The total molding technology is a high-tech developed in the 1990s. It can imprint holographic images on a one meter wide film at high speed, which is different from the traditional narrow molding technology for producing holographic anti-counterfeiting marks. At present, there are few manufacturers that can produce wide width holographic materials in China, with high technical difficulties and large equipment investment, which is also an obstacle that counterfeiters can't overcome. During plate making, it can be encrypted again on the basis of holographic anti-counterfeiting characteristics, so that the anti-counterfeiting function of holographic materials is stronger, and even can not be copied

(3) it is applicable to the automatic packaging production process. In the past, most of the anti-counterfeiting labels were self-adhesive products, which need to be manually pasted on the commodity packaging one by one (individual use of automatic equipment), with low efficiency and high cost. The wide holographic material can be used as raw material without changing the analysis, processing and display of the original equipment and technology; Carry out production under the condition of colleagues

(4) the price is cheap. Compared with holographic anti-counterfeiting marks, the price of holographic materials with the same area is 1/20-1/30 of the latter

(5) holographic materials have high production efficiency and are suitable for the packaging requirements of large quantities of products

Application of laser holographic anti-counterfeiting plastic packaging

in recent years, due to the unremitting efforts of scientific and technological workers, the technical content of laser molded holographic anti-counterfeiting marks has been continuously improved, which also makes its anti-counterfeiting strength continuously upgraded. In addition, due to the intervention of quasi market operators in the field of plastic composite flexible packaging technology before Sutra recitation, the laser holographic anti-counterfeiting technology has entered a broader field - the plastic composite flexible packaging industry. At present, the main applications include the following types:

laser holographic film/color printing film

main raw materials: laser holographic film (aluminized, transparent color printing film), heat sealing film, adhesive

main equipment: color printing machine, dry compound machine, slitting machine, bag making machine

process flow: these products have high requirements for process, equipment and personnel quality. Combined with the unique image effect of laser holographic film, it has strong anti-counterfeiting function. At the same time, due to the large area of laser holographic film,

combined with the use of transparent ink in the color printing process, under the irradiation of ordinary light; We can observe colorful, dynamic changes, multi-faceted and objective three-dimensional anti-counterfeiting images. The products have bright and eye-catching visual effects, and it is relatively easy for non professionals to master good shelf effect. The disadvantage is that the cost is high and it is only suitable for high-end packaging

laser holographic transparent composite packaging

main raw materials: color printing film, transparent laser holographic film (local blank), heat sealing film, adhesive

main equipment and process flow: the same as before

this kind of products have higher requirements for process, equipment and personnel quality than the previous products. Due to the use of transparent laser holographic film (local blank), color printing can be carried out according to the design and requirements of the product, and the laser holographic image is made by transparent process. Part of the illumination light is diffracted by the reflector and imaged, and the other part can be passed through to illuminate the words and graphics behind the holographic image. This kind of looming holographic image makes this kind of packaging have strong anti-counterfeiting function and good promotion effect. The disadvantage is the high cost

laser holographic transfer packaging

main raw materials: color printing film, laser holographic transfer film, heat sealing stock, adhesive

main equipment: the same as before

process flow: the process, equipment, personnel quality and requirements of this kind of anti-counterfeiting products are the same as those of the previous products. The cold transfer process is adopted to transfer the anti-counterfeiting image and text of the laser holographic transfer film at any position of the color printing film. The anti-counterfeiting package produced by this unique process has the effect of laser holographic marking; It also overcomes the shortcomings of self-adhesive logo, non abrasion resistance, non-uniform pasting position and so on. Due to the integration of various technologies, the anti-counterfeiting effect is the best; Moreover, the laser holographic anti-counterfeiting transfer film can be reused many times, and the cost is only u3-us of the first two types of anti-counterfeiting products

problems needing attention in the application of anti-counterfeiting materials

(1) the value grade of goods should be considered when selecting anti-counterfeiting packaging materials. Due to cost constraints, the type of anti-counterfeiting packaging materials used should match the value grade of goods. Adopt high-cost materials for commodity towns with high value and long cycle; Goods with low value and short cycle can be made of low-cost materials, otherwise the market competitiveness of products will be affected

(2) pay attention to the hygienic performance of anti-counterfeiting packaging materials. Food, drugs and other commodities are closely related to human life, especially the materials directly in contact with commodities should meet the relevant health standards

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