Stereoscopic hot stamping is widely used in the post-press processing of tobacco and wine packaging. The hot stamping is of good quality and high precision. The edge of the hot stamping image is clear and sharp, the surface gloss is high, and the pattern is bright and smooth. Three-dimensional hot stamping uses electric carving method to make a three-dimensional hot stamping version. Although the cost of electric carving hot stamping is much higher than that of the etching method, it is still very suitable for the long version of tobacco and alcohol, reducing the number of processes and reducing the scrap rate. This article mainly introduces the technical key and superiority of the electro engraving stereoscopic hot stamping process, and briefly introduces the development direction of the stereo hot stamping technology. 1. The principle of three-dimensional hot stamping Three-dimensional hot stamping, namely hot stamping and embossing, is completed at one time: using a hot stamping plate and bottom mold, under certain pressure and temperature, the plastic deformation of the printed substrate occurs, and at the same time, the plasticity of the electro-aluminum foil is printed on the printed matter or other substrates. Deformed parts, which are artistically processed on the printed surface. Electric carving stereo stamping plate with high precision, hot stamping effect is very beautiful. The electro-engraved brass plate is commonly used in post-press processing. Through computer software control, three-dimensional engraving of pre-scanned images is performed. The bronzing plate produced in this manner is combined with a prefabricated letterpress to perform three-dimensional bronzing. The key to this process is platemaking. The graphic part of the hot stamping version should be a rounded line, which is different from the normal straight lines of the plane hot stamping plate. Therefore, the stereo hot stamping plate needs secondary processing after etching, and the technical difficulty is high. . 2. Characteristics of engraving system Plate: 7mm thick brass plate, the service life of up to 1 million more than India, can greatly reduce the downtime for plate change time, and brass is harder than the ordinary corrosion of flat copper plated version of the copper, the performance of fine patterns Ideal. The traditional corroded copper plate, 2 mm thick, is riveted to another thick copper plate or aluminum plate for low cost, but it can only be used for flat hot stamping. Its service life is generally only 100,000 times. Plate making: Using computerized CNC engraving (CNC), it can meet the high requirements of hot stamping on the level and details than the traditional etching process. Different shapes can be used for the convex edges to obtain precise and perfect corners to ensure the printing on the Stamping embossing pattern can obtain the desired edge clearness; the ability to scale the pattern is unmatched; the hot stamping plate and the bottom plate are easy to copy, and the appearance of hot stamping embossing patterns of the same lot of products can be kept consistent; Printed images have a distinct three-dimensional hierarchy, forming a relief effect on the print surface and producing a strong visual impact, giving the package a unique tactile sensation; the brass three-dimensional hot stamping version is durable, accurate in size and basic pattern, Significantly shorten the start-up time, high production efficiency, and repeat production accuracy. The bottom mold: When the embossing stamping reaches a certain depth, a bottom mold is required to cooperate with it. When the stamping is performed, the three-dimensional hot stamping plate will expand during the temperature increase, and the temperature of the bottom mold is still at room temperature. The hot stamping version is not compatible with the bottom mold, so it is necessary to use extraordinary bottom mold technology. Installation: With the easy-to-locate positioning system developed by Kurtz, with the marked holes and position indicators, the installation of copper plates and counters is effortless, and the mounting time is greatly reduced. 3. The key factors affecting the quality of hot stamping Equipment Accuracy: The three-dimensional hot stamping process requires two stencils: concave and convex. Be sure to use a high-precision stamping machine, otherwise it will cause damage to the punch. The round flattening and hot stamping equipment has high precision, but it is difficult to operate. It needs to pay special attention to the thickness of the drum lining and the height of the lower platen so as to ensure that the line speed of the equipment is the same during the operation, otherwise it will cause the slip phenomenon. The flat stamping and stamping equipment is not accurate, and the layout will change after the second edition, and it is easy to cause damage to the punch. Hengheng's MK Series A round flat stamping machine uses a patented lift table device to effectively solve the above problems. Electro-aluminum foil quality: The speed and quality of bronzing are mainly affected by the release coating and the gluing layer. These coatings are highly sensitive to heat and can increase the bronzing speed. Therefore, the use of advanced glue formulations can meet the requirements of high-speed bronzing. The requirement to reduce the hot stamping costs. 4. Development trend of three-dimensional hot stamping Nowadays, the packaging of goods is getting brighter and brighter and more and more dazzling. Hot stamping is a commonly used process in postpress processing. Although the quality of cold stamping is also good, the cost is lower, but it is inferior to hot stamping. Good hot stamping quality and hot stamping effect, especially high-end commodity packaging, use hot stamping process. The three-dimensional hot stamping is a prominent advantage of the hot stamping process, and it develops with the development of hot stamping technology. One of the development trends in the future is online hot stamping. The improvement of the chemical properties of the three-dimensional hot stamping foil provides a reliable guarantee for a significant increase in the hot stamping speed. Therefore, the three-dimensional hot stamping process can already be completed online, and the application of the online hot stamping process will become more and more common in the future.