Hot stamping is a Chinese term, also known as "hot stamping", pronounced as tàng jīn. A printing and decoration process. The metal printing plate is heated, foiled, and golden text or patterns are embossed on the printed matter. With the rapid development of hot stamping foil and packaging industries, anodized aluminum hot stamping is becoming more and more widely used. Basic introduction Chinese name: Bronzing Foreign name: gilding Pinyin: tàng jīn Phonetic: ㄊㄤˋ ㄐㄧㄣ Definition, basic explanation, citation explanation, basic concept, overview, characteristics, product application, precautions, storage conditions, process, process principle , technology development, review, three-dimensional bronzing, hologram bronzing, cold bronzing process, micro-embossing process, suitability, equipment, problems, troubleshooting, basic explanation of the meaning 1. [bronzing]: book covers are bronzing with real gold characters. 2. [gold blocking]: Use an engraved relief plate (such as on the cover) to press gold foil. Citation explanation: Also called "hot stamping". A printing and decoration process. The metal printing plate is heated, foiled, and golden text or patterns are embossed on the printed matter. Xu Chi's "Searching All the Strange Peaks for Drafting": "He stood up, went to the window to open his suitcase, and took out a stack of four red silk and gilded hardcover books." "Selected Novels" Issue 2, 1981: "He started from He took out two work ID cards from the small pocket of his coat, opened the gilded red plastic cover and took a look. "The basic concepts are summarized such as: gilding book covers, gilding gift boxes, cigarette, wine, clothing trademarks and boxes, greeting cards, etc. There are many colors and patterns for invitations, pen stamping, etc., and special editions can also be customized according to specific requirements. The base materials for hot stamping include general paper, gold, silver ink and other ink printing paper, plastic (PE, PP, PVC, engineering plastics such as ABS, etc.), leather, wood and other special materials. Electrochemical aluminum hot stamping foil mainly uses heating and pressure to transfer patterns or text to the surface of the hot stamping material. To complete this process, you need a hot stamping machine, a hot stamping template (such as a zinc plate, a copper plate, a silicone plate, etc.) engraved with special words or patterns, which are heated to the required temperature, transferred to the required pressure and maintained for the corresponding time. Features: The pattern is clear and beautiful, the color is bright and eye-catching, and it is wear-resistant and weather-resistant. On printed cigarette labels, the application of hot stamping technology accounts for more than 85%. In graphic design, hot stamping can be the finishing touch and highlight the design theme. Especially when used on trademarks and registered names, the effect is even more significant. Product application 1. Ordinary gold, laser gold hot stamping. It can be used for hot stamping on most products, including gold cards, silver cards, laser cards and glass cards. Its application is relatively common. Related products 2． Positioning holographic hot stamping. Holographic laser positioning anodized aluminum is a special process application in design, with corresponding anti-counterfeiting patterns, which can greatly improve the anti-counterfeiting ability of the product and at the same time improve the quality of the product. This kind of anodized aluminum is generally produced domestically. Compared with imported products from abroad, the price is cheaper, but the hot stamping performance is slightly worse. Holographic laser positioning anodized aluminum has a great relationship with the control of hot stamping temperature, hot stamping pressure and vehicle speed, and even the hot stamping machine model. 3. Special application of anodized aluminum in technology. Ironing first and then printing is a new idea in the cigarette label design and printing industry. The application of this process places high demands on anodized aluminum. 4. Directly bronzing on the UV varnish surface. The process itself has very high requirements for UV varnish and hot stamping anodized aluminum. When applying varnish, attention should be paid to controlling the amount of oil, and try to ensure that the varnish coating of the entire batch of products is relatively stable, and the oil layer should be thin and flat. ; For the anodized aluminum used for hot stamping, it is required to be high temperature resistant, have good adhesion, and have good hot stamping suitability with varnish (the type of resin used in the varnish is different from the heat in the anodized aluminum for hot stamping). melt glue to match). Among all products, the scope of application of this process is relatively small. In addition, hot stamping of electrochemical aluminum on gold, silver ink and matte oil also has high requirements on the hot stamping surface and electrochemical aluminum foil. If the ink particles on the hot stamping surface are large, Or rough surface will directly affect the normal progress of hot stamping. Things to note: 1. The appropriate hot stamping foil must be selected according to the different types of objects to be ironed.

When hot stamping, you must master the three-way coordination of temperature, pressure, and hot stamping speed, and they vary according to the different hot stamping materials and hot stamping areas. 2． The speed and direction of the turning tool should be mastered when cutting. 3． Electrochemical aluminum hot stamping foil should use paper, ink (especially black ink), kerosene, and compound glue with suitable properties. The hot stamping parts must be kept dry to avoid oxidation or damage to the hot stamping layer. 4． The general packaging is: 64CM×120M per roll, 10 rolls per box; customizable width is 64CM, length is 120M or 360m large roll or other special specifications (1.5m wide, 1000m or 3000m long). 5. When storing, store it in an upright, pressure-proof, moisture-proof, heat-proof, sun-proof place, and place it in a cool and ventilated place. Storage conditions (1) Temperature 5℃-20℃ (2) Humidity 30-70 (3) Vertical placement (4) Avoid direct sunlight. Fabric hot stamping technology is developing rapidly in our country, but it is still difficult to put it into mass factory production. Just after 2000. With the rapid development of science and technology, the fabric hot stamping process has become increasingly mature. Because the overall effect of the hot stamped fabric looks elegant and trendy, it has become more and more popular among many beauty lovers. With the continuous research and development and updating of hot stamping technology, fabric hot stamping has been subdivided into industries. Taking hot stamping equipment and hot stamping methods as an example, there are generally two types of common hot stamping equipment: (1) Round pressed round fabric hot stamping:

Both the hot stamping plate and the bottom relief plate are cylindrical, and there is line contact between the two cylindrical rollers. The bottom relief plate is generally made of silicone material with moderate hardness. This hot stamping machine is suitable for hot stamping entire rolls of narrow-width rolled cloth strips. The advantages are: fast speed and high output. The hot stamping paper used usually has a metal coating on the back and comes with a hot stamping adhesive. As long as the gold foil paper is properly selected and the performance of the hot stamping machine is accurately debugged, the fastness of the cloth strip after hot stamping is basically okay. However, this method also has a disadvantage. Since the fabric has more or less tension, during the hot stamping process of the entire rolled cloth strip, the cloth strip and the hot stamping paper are moving at the same time. When doing multi-color hot stamping, It is difficult to control the accuracy of color registration. At this time, we can only settle for the next best thing and do the single-color hot stamping first to achieve the ultimate. (2) Flat stamping of fabrics:

The more common hot stamping machines are: pneumatic hot stamping machine or manual hot stamping machine. The main components are composed of two upper and lower metal plates. When doing fabric hot stamping, generally, the upper aluminum plate generates heat and moves downward. The pressure and time that need to be considered when hot stamping depend on the height of the glue layer of the printed pattern and the temperature that the fabric can withstand. In most cases, the temperature is between 140°~160°, the pressure is more than 5kg, and the time is 10 seconds (reference value). If the temperature is too low, the hot stamping fastness will not be ideal; conversely, after the fabric is hot stamped, the surface of the cloth will turn red (white cloth will turn yellow) and change color. If the pressure is too low, the fastness will be affected; if it is too high, the pattern of the three-dimensional hot stamping paste will collapse and the three-dimensional effect will be lost. When using this method to hot stamp fabrics, there is a prerequisite: add hot stamping glue with a screen plate, and print the pattern you need on the surface of the fabric in advance. Only after it is completely dry can you enter the hot stamping machine for fabric hot stamping. After hot stamping, set aside to cool completely, tear off the scrap gold foil → inspect → repair → package to complete the entire fabric hot stamping process. There are many technical points in the fabric hot stamping process, and it is impossible to summarize them simply in a few articles. To achieve good hot stamping fastness and good hand feel, it is necessary to have a certain amount of technical content and accumulation of operational experience. Only by continuous exploration and progress can we carve out a fertile ground and an oasis for fabric hot stamping. Fabric hot stamping processing technology, there is no best, only better! Process Principle The hot stamping process uses the principle of hot pressure transfer to transfer the aluminum layer in anodized aluminum to the surface of the substrate to form a special metallic effect. Since the main material used for hot stamping is anodized aluminum foil, hot stamping is also called anodized aluminum hot stamping. . Anodized aluminum foil is usually composed of multiple layers of materials, the base material is often PE, followed by separation coating, color coating, metal coating (aluminized) and glue coating.

In short, there are many factors that affect the quality of hot stamping. Producing high-quality hot stamping plates and correctly grasping the hot stamping suitability are the keys to improving the quality of hot stamping. The production of cigarette packs is different from other publications in that it has its own unique printing and processing requirements. The requirements for quality, decoration, and anti-counterfeiting are relatively high, and the batch printing volume is large. Enterprises must carefully read the construction order before production, do daily maintenance of the machine, master the performance of electrochemical aluminum foil, and be familiar with the relationship between temperature, pressure, and speed. Only in this way can the quality of cigarette package hot stamping be guaranteed. Troubleshooting: The hot stamping fails or the hot stamping is inaccurate: This is related to various factors such as the surface characteristics of the printed parts, the properties of the anodized aluminum, the hot stamping temperature and pressure, etc. ① Too much powder is sprayed on the surface of the printed piece, the printing ink is not dry or the surface contains additives such as adhesive remover and varnish, which will hinder the adsorption of anodized aluminum and paper. It can be used to remove powder from the printed surface or be solved during the printing process. ② Improper selection of anodized aluminum will also directly affect the hot stamping fastness. What type of anodized aluminum should be selected based on the size of the hot stamping area and the characteristics of the hot stamping material. There are many models of anodized aluminum materials on the market, and each model corresponds to substrates of different materials and their most suitable hot stamping ranges. They are mainly distinguished by the adhesion and peeling degree during use. When the operator chooses anodized aluminum material with poor fastness and tightness for hot stamping, the hot stamping pattern on the cigarette pack will be inaccurate and gold will fall off. When choosing anodized aluminum, you can mainly refer to the following categories: hot stamping on ordinary products (generally ink color) anodized aluminum has 88-I type, KURZ PM type: cigarette packs, cosmetics and other thick ink printed matter (including gold printing, silver printing) The hot stamping electrochemical aluminum is type 88-2; the fine stroke electrochemical aluminum for cigarette labels, cosmetic packaging, etc. is 88-3, 88-4, PM288, etc. It is suitable for 0PP or PET laminated paper and cardboard with UV ink. , glazing paper and other products hot stamping anodized aluminum has 88-4 type, K series, LK series, and SP series. ③ Failure to correctly grasp the matching between hot stamping equipment, hot stamping time, and hot stamping temperature affects the hot stamping fastness and the clarity of the image and text outline. Due to different equipment and hot stamping materials, the hot stamping time and hot stamping temperature are different. For example, if the high-speed rounding machine is fast and the nip line is in contact, the hot stamping temperature will be higher than that of rounding or flattening. Generally speaking, the temperature for round pressing and hot stamping is between 190℃ and 220℃, for round pressing and hot stamping, it is about 130℃ and 150℃, and for flat pressing and hot stamping, it is about 100℃ and 120℃. Of course, hot stamping time, hot stamping temperature and production efficiency are also largely restricted by the transfer performance of anodized aluminum. Also pay attention to check whether the pressure is balanced. If some pictures and texts cannot be hot stamped, check whether the hot stamping plate is damaged. Reverse pull: Reverse pull means that the anodized aluminum pulls away the printing ink or varnish after hot stamping. The main reason is that the ink on the surface of the printed product is not dry or the UV and other post-processing treatment on the surface of the printed product is improper, resulting in the ink and UV oil on the surface of the printed product not being firmly combined with the surface of the paper. Wait until the printed matter is dry before stamping. In addition, anodized aluminum materials with lower separation force and excellent heat transfer properties can be used.