With the development of the economy and the advancement of printing technology, the packaging of products gradually tends to be high-end, exquisite, environmentally friendly and individualized. Among them, the anodized aluminum hot stamping process is particularly popular with the public because of its unique surface finishing effect. It is particularly reused in high-end industries such as cigarette labels, banknotes, and cosmetics. One can imagine the importance of bronzing. Next, we will talk about the bronzing process.
The hot stamping process has two main functions:
- The first is the surface modification, which is mainly to increase the added value of the product, making the product look festive or magnificent. Therefore, the combination of bronzing and embossing technology can highlight its role.
2. The second is to give products a higher anti-counterfeiting function, including trademark signs, life-saving cards and counterfeiting, and so on. Therefore, hot stamping can show the individualization of product packaging, while also increasing the anti-counterfeiting function. This makes many high-end packaging have adopted the concession process.
The main material of the hot stamping process is anodized aluminum, so it can also be called anodized aluminum hot stamping. The principle is to transfer the aluminum layer in the anodized aluminum to the substrate using hot-press transfer. So the basic process is that, under the pressure, the anodized aluminum is heated to melt the hot-melt silicone resin layer and the adhesive. At this time, the viscosity of the silicone resin will become smaller, so that the aluminum layer and the anodized aluminum lonely glass can be transferred to the substrate at the same time. Finally, as the pressure is removed, the adhesive cools quickly, which is a hot stamping process.
Because of the improvement of the material level, there is naturally a difference between high quality and traditional hot stamping. At present, the main bronzing is still based on high quality. Therefore, when we make hot stamping plates, we mainly adopt photographic corrosion technology and electronic engraving technology. The materials used are usually magnesium plate, copper plate or zinc plate. Because the magnesium plate and the copper plate have fine materials, the surface finish and heat transfer effect are better than those of the zinc plate, so the use of high-quality magnesium plate can improve the gloss of the bronzing graphic and the definition of the outline. However, the traditional photographic corrosion technology is simple and low-cost to make hot stamping plates, which are mainly used for text, thick lines, and general images; for finer, uneven thickness of pictures and texts, the hot stamping plate needs to be damaged twice or electric engraving technology.
Anyone who has made bronzing will love the rich and delicate changes in the production process. Among them, the bronzing version made by electric engraving is particularly beautiful. Not only that, the process is also conducive to environmental protection, but the disadvantage is that the investment in equipment cannot be afforded by normal printing companies, and even if the process is not in place, there will be “glued plates”.
The bronzing process seems simple, but once it is operated by an unskilled designer, it is still difficult. The bronzing industry can be roughly divided into paper bronzing and plastic bronzing. The machinery of the two types of industries are also different. These two methods have their own characteristics and meet the requirements of different products.
Shanghai Huiyou Metal Products Co., Ltd. is a supplier of magnesium alloy etching plates. With many years of experience, its products have been deeply loved by customers.
