Principle and application of stamping process in label printing
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In recent years, with the development of commodity economy and the influx of foreign capital and technology, the domestic printing and packaging industry has been greatly developed. Especially the printing of cigarette packages and labels is the most prominent embodiment of the use of advanced technology in the printing industry. Among the two printed products, machines, consumables and technology have developed to the point of amazing foreign counterparts.
How to introduce the most advanced technologies and processes into our daily production, and to make these technologies and processes practical and localized, making them a tool we can use in the development of new products in production. topic of. Now we will talk about the combination of bronzing technology and labeling. If there is any inconvenience, the reader will not correct me.
First of all, the hot stamping process is divided into cold and hot. The principle of cold-hot is mainly to use the pressure and special glue to combine the electrochemical aluminum with the substrate. The whole process does not need heating, and there is no need for hot stamping and padding technology. At the same time, the narrow-width rotary machine is relatively expensive and complicated to operate. Economically convenient. Its maximum hot stamping speed can reach 120 meters per minute. However, the cold-hot process started late, and the consumption of electrochemical aluminum in the hot stamping process was large. After ironing, the gloss of the electrochemical aluminum was not as good as that of blanching, and the conditions of the concave hot effect could not be achieved. Therefore, the scale has not yet formed in China. application. From the perspective of future development trends, this is a technology that has great potential and is worth developing.
The principle of blanching is believed to be familiar to everyone. Simply put, there are three major material elements: machine, anodized aluminum, and hot stamping. The three main elements of technology are: temperature, pressure and speed. The bronzing method is rounded from a circle, flattened to a flat flat. Speaking of machines, those who are familiar with the process know that Stowe, which belongs to the Bobst Group of Switzerland, is recognized as the king of bronzing in the world; in the case of anodized aluminum, Kulz is undoubtedly the leader in the bronzing industry; After the printing company has a first-class hot stamping machine and anodized aluminum, the hot stamping version is very important. The German h+m company belongs to the Kurz Group, and its hot stamping version can perfectly combine the machine with the electrochemical aluminum. Therefore, there is often a joke in the bronzing industry: "When a hot stamper has these three things, and then burns badly, you can't blame everyone." Of course, the padding technology is also very important in the hot-selling process, and to master this technology can only depend on experience. Therefore, in full, in addition to the first-class machines and consumables, the technicians' experience is the most important position in the blanching.
Secondly, the bronzing process has been greatly developed in recent years in the application of labels. In particular, laser and holographic anodized aluminum, through the transfer effect of blanching, make the label products beautiful and difficult to counterfeit. For the special nature of label anti-counterfeiting, the electrochemical aluminum usually uses a thin PET film and a glue layer to facilitate the transfer, thereby achieving the purpose of high-volume, high-speed production. Compared with the cigarette packet printing process, the printing efficiency is higher than that of the former because there is less trouble with the combination of galvanic oil and ink in label printing. In addition, there is a topic that cannot be ignored. In the hot stamping of laser and holographic anodized aluminum, in addition to the surface being clean and smooth, there is also a mirror polishing treatment, so that the anodized aluminum is not matte and distorted after transfer. Therefore, the label product is smooth and shiny, and plays a role in protecting the brand and improving the product grade.
With the development of cold stamping technology, more and more label printing manufacturers have expanded their efforts as technology development and application fields, as well as their peers in the industry.
Finally, from the trend of the development of the printing industry, more and more new technologies, new technologies and standards, such as flexo printing, silk screen printing, etc., through various methods to achieve a bright color of the label, aesthetics only improve the grade of the product It has increased the difficulty of anti-counterfeiting. As the saying goes, a hundred flowers bloom and hundreds of schools contend, making the label printing perfect.