First, hot stamping technology
Holographic hot stamping technology is one of the more secure and successful anti-counterfeiting measures that are currently being certified worldwide. The holographic hot stamping process uses a large number of holograms, and the hologram stamped on the substrate is very thin, and it is integrated with the substrate. As one, with its printing patterns and colors on each other, you can get very good visual effects. According to the different hot stamping process, holographic hot stamping can be roughly divided into 3 types, namely, low-speed holographic hot stamping, fast random holographic hot stamping And high-speed positioning holographic hot stamping. Among them, high-speed positioning hologram hot stamping technology has the highest requirements and the greatest anti-counterfeit strength. It is necessary to ensure that the hologram is completely and accurately stamped at a specified position with high production efficiency, and the positioning accuracy is not less than ±0.25 mm. Holographic positioning hot stamping adopts corresponding anti-counterfeit patterns and special techniques. By using holographic positioning probes, it can precisely control the electrochemical aluminum, and the quality of bronzing is high. It has reached consensus in the world. As holographic aluminum manufacture is more difficult, there are fewer manufacturers and the process is complicated, so the cost is higher.
Cold foiling technology is a brand new bronzing process that does not require the use of a heated metal silver plate. Instead, the adhesive is applied directly to the decorative graphic and the galvanized aluminum is attached to the printed surface. Cold foil stamping is usually processed by round press method, and the hot stamping speed is fast, but the hot stamping surface effect and firmness are poor, so the printed matter also needs to be coated or coated. The cold bronzing process has low cost, energy saving and high production efficiency. At present, some cigarette factories on the market have eliminated the paper packaging for cigarette packs and replaced them with color films to reduce packaging costs. Using cold gilding technology, similar hot stamping effects can be made on paper and film to increase the attractiveness of cigarette packs.
The first hot stamping is the new idea of ​​the printing industry and the smoke label design. The first hot stamping is the first hot stamping of silver foil on the white card paper, and the printing of the graphic on the surface of the hot stamping silver foil is a large-area hot stamping technology. This processing method usually uses a round press or a round press hot stamping machine. When the hot stamping pressure is a line contact method, when a large area of ​​hot stamping, unlike the flat stamping hot stamping, bubbles appear, and the hot stamping surface is very smooth. At the same time, full-size stamping does not increase the load on the machine.
Three-dimensional hot stamping is the use of corrosion or engraving technology to create a matching hot and cold stamping concave and convex graphics and positive mold, hot stamping and embossing to achieve a complete process. This process also completes bronzing and embossing at the same time, which reduces the waste generated from overprinting of the processing process, and improves the production efficiency and product quality. Stereoscopic hot stamping often adopts high-pressure hot stamping embossing materials, which can display different colors when viewed at different angles, achieving ideal anti-copying and anti-counterfeiting functions. Mask the subtle levels of the graphic to avoid falsification and falsification of the file. Three-dimensional hot stamping can use flat-flattening, round-flattening and round-circular hot stamping die-cutting machines, and the hot stamping uses corroded copper plates or carved brass plates. The corroded copper plate is used for flat stamping and has a short service life of 100,000 times. The life of the carved brass plate can reach 1 million times. It is suitable for long-lived, and the stamping is of good quality.
Second, engraving gravure technology
Advanced engraving and gravure plate making and printing technology Printed prints with thick striated ink layers, heavy colors, a certain luster on the lines protruding from the paper, and a special bulging effect on some patterns, using the tactile sensation The feeling is that it is easy to identify the raised gravure pattern, simply touch the pattern with your fingertips to confirm its feel. At the same time, its obvious bulges, thick and vivid colors, and fine continuous line patterns all give people a unique sense of vision.
This is the appearance of these ordinary offset printing can not reflect the effectiveness of its anti-counterfeiting lies. Engraving and gravure printing is not only a traditional technology of security defense, but also an effective and reliable carrier such as magnetic and infrared absorption machine reading features.
Third, the new screen printing technology
Screen printing has the characteristics of thick ink layer, rich graphic layers, strong three-dimensional sense, and wide printing materials, etc. The application of high-grade tobacco and alcohol, food packaging cartons has gradually increased.
The use of UV screen inks to print frosted, refraction, ice, wrinkles and other effects on cigarette packs has greatly stimulated consumers' desire to purchase. However, due to the flat press screen printing method with low printing speed, slow ink curing speed, difficult to control printing quality, and large consumption of printing materials, it is unable to meet the needs of cigarette cartons for scale and mass production. High-speed rotary screen printing production line has high printing speed, high productivity, stable quality and low consumption of printing products. It has changed the traditional flat-press screen printing manual feeding and ink supply methods. It is suitable for high-speed automatic and large-scale mass production of fine folding. Paper box.
Web Rotation Screen printing uses a nickel metal round screen plate, a built-in doctor blade, and an automatic ink supply system. The doctor blade transfers the printing ink from the circular screen plate to the surface of the substrate supported by the impression cylinder. The entire printing process from paper feeding, ink supply, color registration, UV drying, etc. are fully controlled by the computer. The circular screen printing plate is electroformed, and the mesh holes are hexagonal shaped holes, and the entire mesh surface is even and thin, ensuring the stability and precision of the imprinting. Therefore, roll web screen printing can not only meet the requirements of special effects such as printing frosting and ice flowering, but also can be used for hot stamping holographic anti-counterfeit labels, embossing, and die-cutting molding. It is easy to realize high-speed automatic printing paper boxes. Since the round press and die cutting are line contact, the line pressure during die cutting is much lower than the contact pressure of the flat pressed surface, so the equipment power is small and the stability is good. Due to continuous rolling die cutting, high production efficiency, maximum die cutting speed up to 350 m/min, round press die cutting machine equipped with high-precision register device and die cutting phase adjustment device, can obtain quite high die cutting Accuracy.
New bronzing process - cold gilding technology
December 07 04:04:02, 2019
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