The Development of Refractive Technology in Printing Plants [Buke Printing]

The Development of Refractive Technology in Printing Plants [Buke Printing]

There is limited development prospects for anti-counterfeiting in printing and packaging. With the development of post press processing technology, various surface finishing techniques similar to refractive technology are increasingly being applied in the decoration and anti-counterfeiting of printed products and printing packaging, such as laser holographic refractive technology, screen printing refractive technology, etc. In addition, the refractive latent image anti-counterfeiting technology in pattern anti-counterfeiting technology can also be considered as a type of refractive technology

1. Laser holographic refraction technology

In the surface decoration of printed materials, the technology of using laser generated complex alternating stripe structures to clearly and massively replicate clear and vivid three-dimensional color red light images (laser holographic images) on a two-dimensional carrier is called laser holographic refraction technology. Laser holographic refraction technology uses the principles of interference and diffraction of lasers to record specific light waves that reflect the characteristics of object light waves in the form of interference stripes using two beams of phase dry light (object light and reference light) on an optical medium (such as holographic dry plate), and capture laser holographic images (mostly reflection holograms in surface decoration). This laser holographic image is composed of gratings and has three dimensionality. Features such as storage, confidentiality, and anti-counterfeiting. Due to its ability to record one page of data on materials with an inclination angle of approximately 1, within a surface plane of 180, rich content of 180 pages of data can be recorded by refractive processing of the printed product through laser total image imprinting, and different stereoscopic effect images can be displayed at each inclination angle.

The molding method of laser holographic refraction technology is similar to mechanical refraction, but the formation of the refractive plate texture is much more complex. Firstly, the laser records the image information on holographic recording material, and then uses electroplating to replicate the refractive texture onto a rigid metal template, forming a very dense grating that cannot be recognized by the human eye. Laser refractive technology, like mechanical refractive technology, does not require ink. It only requires a rigid template and pressure to imprint the refractive texture onto the surface of the substrate

refractive technology, also known as refractive screen printing technology, is the process of printing refractive textures onto the surface of a substrate through screen printing. By using this technology, it is easy to print ultra-fine concave and convex lines on mirrored gold and silver cardstock. After being illuminated by light, it produces a colorful refractive effect, making screen printed products more noble, gorgeous, and glossy.

The process flow of screen printing refractive technology generally includes: refractive original design, production of electronic refractive texture, output of refractive texture film, stretching and coating of photosensitive adhesive, close contact exposure between film and screen, development, plate repair, screen printing, and UV curing. Due to the lower surface tension of mirror printing materials (such as gold and silver cardstock) compared to regular paper, the printing ink must choose the U-refractive ink specifically designed for gold and silver cardstock. Otherwise, it is difficult to transfer the ink smoothly to the surface of the substrate using other general inks. At the same time, UV refractive ink can only produce unique refractive effects when printed on the surface of mirror printing materials. During printing, a certain proportion of ink manufacturer specified diluent can be added for dilution according to the viscosity and transfer situation of the ink

The printing process of refractive index technology in screen printing can be carried out by selecting appropriate printing methods and equipment according to the actual situation. When the refractive index printing area is small, manual printing can be used to complete it. However, if the refractive index printing image and text area is large, high-precision screen printing machines must be used to ensure quality. The printing process of screen printing refractive technology requires operators to have a certain understanding of the production of high-quality screen, the hardness, angle, and pressure of the scraper, as well as the performance of Uv refractive ink, in order to take corresponding measures against various problems that arise during the production process. The process method of screen printing refractive technology is simple and the technical requirements are not high. Although the production efficiency is relatively low and the anti-counterfeiting effect is slightly inferior to mechanical refractive technology and laser refractive technology, its refractive effect is strong, the appearance effect is good, and it is simple and easy to design and produce with low cost. It is suitable for small batch products, and therefore has developed rapidly in recent years, and its application will become increasingly widespread.

3. Refractive latent image technology

Refractive latent image technology is a type of pattern anti-counterfeiting technology with a wide range of applications. It can be used to print packaging products on various paper, plastic, metal, and composite materials, such as packaging boxes, packaging bags, audio-visual product covers, as well as to print trademarks, labels, documents, book covers, certificates, securities, magnetic cards, etc. This technology is a technique that uses intaglio printing or screen printing to form shadows. By utilizing the different reflection effects of horizontal and vertical intaglio or screen printing lines on light, two types of graphics and text are made in the same part of the paper. When observing, different angles of lines with small thickness are used to reflect light differently and produce color differences to separate the images. In the same anti-counterfeiting area, the images or text seen from different angles will be completely different. Viewing the latent image area from different angles can display different anti-counterfeiting information and patterns

The Development of Refractive Technology in Printing Plants [Buke Printing]