Laser Rainbow Holographic Printing Features and Types Details

The application of laser holographic marking in the field of packaging and printing has been increasing year by year. The packaging security of tobacco, wine, medicine, cosmetics and other products are inseparable from the laser holographic logo.

Laser holographic printing, ie laser rainbow holographic printing, is a high-tech printing process using optical technology. It can not only reproduce the original image of the original, but also show the different side shape of the original with the change of the position of the observation line of sight. The principle of the laser holographic image using white light diffraction grating makes the image effect changeable, colorful, colorful, color air With obvious levels, vividness, high information and technical content, laser holographic image production and copying technology is high in content, requires professionals, the processing technology is complicated, the equipment is expensive, and the image itself has features that are difficult to imitate. Therefore, it was in the 20th century. The era began to be widely used in the field of security. With the introduction of high-tech such as encryption holography, three-dimensional holography and true color holography, and the popularization and application of molded holograms made of two kinds of electro-aluminum films with tamper-evident and hot-stamping types, the security of laser holographic materials is greatly enhanced. .

Laser holographic material is a new type of high-tech material, widely used in packaging and anti-counterfeit printing. The raw materials used in the laser holographic film are PVC, PET, OPP, BOPP, etc. There are laser aluminized films, laser transparent glazing films, laser gilding paper, laser transfer paper and other series. The colors are gold, silver, red, blue, Green, black and so on. The laser holographic material combines the anti-counterfeiting technology of laser holography with good anti-counterfeiting effect with the printing and decoration techniques such as hot stamping and molding, so that the product can increase the anti-counterfeiting performance while improving the decoration and decorating effect. In addition, the laser holography technology is also combined with other technologies to produce high-tech products such as laser holograms and fluorescent anti-counterfeiting films, flexible transparent laser holographic anti-counterfeiting films, nuclear confidential anti-counterfeiting laser holographic films, and the quality and anti-counterfeit of laser holographic films are improved. effect.

Laser holograms are based on the principle of laser interference, using the method of spatial frequency coding. The application of laser holographic marking in the field of packaging and printing has been increasing year by year. The packaging security of tobacco, wine, medicine, cosmetics and other products are inseparable from the laser holographic logo. At present, a variety of laser holographic materials have been developed and applied in different packaging and security printing fields. However, since laser holographic logo printing not only has the content of printing, but also involves high-tech fields such as lasers, it has no way to solve some of the problems that appear in printing, thus affecting the printing speed and product quality. Here are some simple introductions. Laser holographic logo printing knowledge.

Laser holographic logo printing is an anti-counterfeiting printing technology developed using laser holographic imaging technology. A three-dimensional model is illuminated from different angles with a laser beam and reference light separated from the laser beam. The light reflected by the model passes through a slit to form interference fringes containing the model holographic information. This interference fringe was recorded on a photographic film, turned into a nickel plate, and pressed on an aluminized film to reproduce the model holographic pattern under normal light. This is the principle of laser holographic printing. The use of the first laser holographic film logo was whisky, which became popular around the world and was widely used in security printing of various types of documents, credit cards, and product packaging.

Laser holographic materials are contemporary high-tech products that combine holographic technology with optics, chemistry, machinery, and vacuum technology. Laser holographic molding technology belongs to a kind of holographic grating technology. It uses the principle of laser holography to rapidly copy the material of imaging objects or multi-level printing equipment. The production technology of laser holographic packaging material is high, the equipment is sophisticated, and the process is complex. After processing, the product is easily destroyed. Therefore, it has a high decorative and ornamental value, and thus the package has a good anti-counterfeiting effect. Laser holographic materials expand the technology and use of laser-molded holograms to transfer vivid, dazzling three-dimensional holographic images and various colorful holographic grating patterns to various plastic films and paper-based materials. In addition, with the development of science and technology, encryption holograms (using special optical encoding technology for encryption in holographic images), three-dimensional holography (holographic images taken with a special three-dimensional object model as a target) and true color holography (with high-tech technology The application of new types of laser holographic materials, such as image technology that reproduces the color of the objective object, adds to the decorative effect and anti-counterfeiting performance of the product.


At present, laser holographic film image materials mainly have the following types: The most common laser holographic films are polyester film (PET), polypropylene film (OPP), polyvinyl chloride film (PVC) and washed film. Manufacturers can choose different materials according to the application requirements. Different materials have different application scopes.

(1) PET laser holographic film. Because the material is stable, printability is good and meets the requirements of environmental protection, PET laser holographic film is currently the most widely used and most used material. It can be attached to paperboard, printed into various types of packaging, Bags, etc., can also be used in various flexible packaging markets, such as food flexible packaging or hose packaging. Transparent PET laser holographic film can be made into a package. At the same time, PET laser holographic film is often used to print self-adhesive labels, or as a gold thread, powder and so on.

(2) OPP laser holographic film. In general, the printability of OPP is not as good as PET and PVC materials, which makes it very limited in the application of packaging printing. However, by improving the surface treatment technology of OPP materials, the printability of OPP laser holographic film has made great progress, and customers can easily print beautifully. The transparent OPP laser holographic film is also a very good glazing material, which can bring completely different feelings to the print. In addition, OPP laser holographic film is also an ideal material for making flexible packaging.

(3) PVC laser holographic film. Although the use of PVC is limited in environmentally-conscious countries such as Europe and the United States, due to its excellent printability, there are still many applications for printed materials. PVC laser holographic film is often made into various Christmas ornaments, Spring Festival couples, greeting cards, etc. The passionate Latin American people also use a lot at the carnival. The shiny and dazzling laser holographic gloss can also add festive atmosphere to the festival, so it is also Very popular with consumers.

(4) Laser holographic washing film. The laser holographic water wash film is made of PET laser holographic film, OPP laser holographic film and PVC laser holographic film. The so-called washed film is the use of sodium hydroxide to remove the electro-aluminum part of the film surface, so that the film surface in addition to laser holographic gloss, while presenting a unique pattern or specific logo, graphics, etc., can be directly used as a wrapping paper, or pasted After being made into a paper box, a bag, a book cover, etc., it is not only beautiful, but also has the effect of anti-counterfeiting. It is mainly applied to brand packaging.

(5) Atomic nuclear confidential laser holographic film. As an anti-counterfeiting technology with high hi-tech content, nuclear track anti-counterfeiting is called “two nuclear weapons” in the field of anti-counterfeiting together with “heavy ion micropore anti-counterfeiting”. Nuclear track anti-counterfeiting technology is the use of nuclear reactors and other nuclear materials on the plastic film splinter irradiation, the formation of trace damage in the plastic film, and then through the imaging technology to form a fine logo of the nuclear track micropore anti-counterfeiting patterns required. Finally, after the late commodity processing, a nuclear track micropore anti-counterfeiting label or other forms of nuclear track micropore anti-counterfeiting technology products are obtained. It has the advantages of high technology content, difficult to imitate, easy to identify, low production cost, good communicability with other technologies, etc. It can be said to be a trend to guide today's and future security development. Nuclear track anti-counterfeiting technology products can carry out multiple identification and improve the reliability of ordinary identification. And have first-line, second-line anti-counterfeiting features. Such as the superior performance of the first-line anti-counterfeit identification of polymer nanomaterials VCC - nuclear track anti-counterfeiting, as long as a drop of water or pen, ordinary consumers can easily check the authenticity of goods. At present, it has been widely used in the packaging of famous brands of cigarettes, wines, audio-visual products, books and magazines, and high-end branded products. It is also widely used in passport, card, and ticket security. Combining the nuclear track with laser holography technology, ie, the nuclear track anti-forgery-encrypted image formed on the laser interfering film, can greatly improve the anti-counterfeiting effect of the laser holographic film.

In addition to the laser holographic film, there are currently other laser holographic materials.

(1) Laser holographic paper. Can be divided into two kinds of film stickers and plain paper. The film sticker is made by laminating different types of paper with a laser holographic PET or OPP film. The conformed paperboard is not only more flexible but also less prone to tearing, and the film surface can be waterproof. Laser holographic pure paper directly prints the laser hologram on the paper through advanced imprinting technology. Its greatest feature is environmental protection. Whether it is a laser holographic film sticker or plain paper, it is suitable for general ink or UV ink printing. In addition to being an excellent paper box, book magazine cover or poster material, it has also been used for gift wrap, chewing gum, soap and other packaging. In addition, the label is another major area of ​​application of laser holographic paper. In order to meet the needs of this market, laser holographic paper has introduced laser holographic wet strength paper. Although it is also pure paper, it will not suffer from low temperature or humid climate. Destruction, and can be made into automatic washing labels, so it is particularly suitable for use on recycled wine bottles and refrigerated food labels.
(2) Laser holographic hot foil. Laser holographic hot stamping foil is holographic laser processing of thin foils with hot stamping function to form two-dimensional, three-dimensional, lattice, spiral, synthetic holographic and other images, with high-gloss, colorful and changeable colors, overcome the The common bronzing technology has the defects of monotonous form, low quality, and lack of anti-counterfeiting effects. The laser holographic hot stamping foil has ordinary hot stamping foil and transparent laser holographic stamping foil. In the laser holographic stamping foil, different holographic effects can be combined with each other, and at the same time, dual channels, partial aluminum plating, color separation effects, micro engraving can also be added. Various anti-counterfeiting elements, such as hidden information, are used in the surface finishing of printed products and papers to achieve their unique copyright protection with effective high-level anti-counterfeiting measures. In addition, the laser holographic hot stamping foil dyed layer is a grating, and the color or the image is not a pigment, but a holographic pattern formed by the microscopic pits (gratings) on the surface of the transfer layer after the laser beam is applied. The generation of the hologram pattern is quite complicated and has a very good Anti-counterfeiting effect, the scope of gold foil foil application include ticket price, tobacco and alcohol, medicine, fashion, clocks, computer software and other packaging, special surface decoration after label printing, etc. In addition, there are laser holographic scratch bronzing, suitable for Password protection for lotteries, telephone cards, etc., as well as anti-counterfeiting and decorating effects.

(3) Laser Holographic Cold Foil. It is the use of printing and lamination technology, the laser holographic foil is transferred to the substrate. It breaks the traditional process of traditional bronzing relying on hot-press transfer of gold foil. The use of a new technology, cold-pressing technology, to transfer gold foil not only solves the difficult-to-solve process problems in hot-foil printing, but also avoids the production of metal plates. The pollution caused to the environment during the process can also save a lot of energy. Cold foil has the advantages of fast printing speed, short production cycle, wide application of materials, high printing precision, good anti-counterfeiting effect, cost saving, full use of existing equipment, high production efficiency, and compliance with environmental protection printing requirements. It has been printed in Europe and America in recent years. The latest scientific and technological achievements in the industry. The laser holographic cold foil can also be transparent and cold hot, achieving the security and brand identity.

(4) Laser holographic aluminum foil. It is to add the laser holographic image on the ordinary aluminum foil so as to improve the anti-counterfeiting function and the appearance effect of the packaging product. With good processing adaptability, it is very suitable for mechanized production. The main application object of aluminum foil is pharmaceutical packaging. Because it has excellent light-shielding, moisture-proof, gas-barrier, and taste-protecting properties, it plays an almost absolute role in barrier protection of light, gas, moisture, and taste of drugs. The shelf life of the drug. However, general aluminum foil has no anti-counterfeiting function, and laser holographic aluminum foil has more laser holographic processing technology, so that a counterfeiter cannot easily obtain or duplicate the same material, and therefore, the anti-counterfeiting performance of the medicine can be improved.

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