Hot stamping characteristics and precautions

With the rapid development of hot stamping foil and packaging industry, the application of galvanized aluminum bronzing has become more and more widespread. Such as: book cover gilding, gift boxes bronzing, clothing trademarks and boxes of bronzing, greeting cards, invitations, pen bronzing, etc., especially in the cigarette pack printing process, bronzing process is widely used. Hot stamping substrates include general paper, gold and silver ink printing paper, plastic (PE, PP, PVC, engineering plastics, etc.), leather, wood and other special materials.

Electro-aluminum hot stamping foil is mainly used to heat and press the pattern or text to be transferred to the surface of the stamped material. To complete this process, you need a stamping machine, stencils engraved with special words or patterns (such as: zinc plate, copper plate, etc.), the required temperature for heating, the pressure required for the transfer, and the corresponding time. It should be noted that when hot stamping different materials, the appropriate type of anodized aluminum should be selected, and the appropriate temperature, pressure, and hot stamping time should be selected in order to achieve the desired hot stamping effect.

Hot stamping features:

The pattern is clear and beautiful, colorful, eye-catching, wear-resistant and weather-resistant. At present, the application of foil stamping technology on printed cigarettes accounts for more than 85%. In graphic design, foil stamping can play a role in finishing touches and designing mountains, especially for trademarks and registered names.

Product application:
1. Bronzing, anchor shooting gold hot stamping. Can be used for most products, including gold cards, silver cards, anchor cards and glass cards on the hot stamping, its application is more common, the production of the difficulty is smaller.

2. Positioning holographic stamping. Holographic laser aluminum is a special process application in design, with corresponding anti-counterfeiting patterns, which can greatly improve the product's anti-counterfeiting capabilities, while also improving the product's grade. This kind of anodized aluminum is generally produced domestically. Compared with foreign imports, the price is cheaper, but the gilding performance is slightly worse. Holographic laser Anodized aluminum has a lot to do with the control of bronzing temperature, bronzing pressure and speed, and even the bronzing model.

3. Electrochemical aluminum in the process of special applications. The first hot stamping is the new idea of ​​the cigarette label design and printing industry. The application of this technology is very demanding for anodized aluminum. In addition to achieving accurate bronzing position, smooth and bright surface, balanced pressure, uniformity, no blistering, no paste, and other requirements, it also requires that the edge of gold foil pattern can not have obvious indentation. , hot foil aluminum in the hot stamping surface should have good adhesion, and no obvious scratches and scratches and other phenomena. As we all know, the bronzing process is actually a process in which paper is heated and pressurized. For white cards and glass cards, special attention should be paid to the protection of semi-finished products. Various unfavorable factors of paper deformation should be minimized in the production process. This will help the smooth progress of post-bronzing processes and improve the qualified rate of products.

In the application of bronzing process, it will encounter the problem of how to improve the work efficiency in production. Especially for the process improvement of large quantities of products is very necessary. Take the fine “Red Three-ring” clamshell cigarette box cigarette label printing, the original production process needs offset printing - bronzing - oil, after switching to new materials can be done offset printing, oil once completed, and then bronzing In this way, a process can be reduced in offset printing to avoid the phenomenon of die-cutting and color collapse (reducing the impact of UV irradiation at a time). Without affecting the normal operation of the bronzing process, the production efficiency is greatly improved, and the scrap rate is reduced. , can also reduce the adverse effects on the production of other products.

The direct bronzing on the surface of the UV varnish has a very high requirement for the UV varnish and the bronzing et al. In the coating of varnish, pay attention to the size of the control oil, try to ensure that the entire batch of varnish coating is relatively stable, and the oil layer should be thin and flat. For galvanized aluminum used for hot stamping, it is required to be resistant to high temperatures, has good adhesion, and has good bronzing adaptability to varnish (the type of resin used in varnish and the heat in bronzing anodized aluminum) Melt glue matches). In all products, this process is used in a smaller area. In addition, galvanized gold on gold, silver ink and matte oil on the bronzing surface and gilding anodized aluminum have high requirements, if the surface of the bronzing ink particles larger or rough surface, will directly affect the normal conduct of bronzing.

Things to note:

1. The appropriate hot stamp foil must be selected according to the different types of objects to be heated. Hot stamping must master the three forces of temperature, pressure, and hot stamping speed, and differ according to the different stamping materials and hot stamping areas.

2. When cutting, you should master the speed and direction of the turning tool.

3. Electro-aluminum hot stamping foil should use paper, ink (especially black ink) with suitable properties, dry oil, compound glue, stamping parts

Must be kept dry to avoid oxidation or damage to the bronzing layer.

4. The general packaging is: a roll of 0.64m*l20m, one box per 10 rolls. It is also possible to customize large rolls with a width of 0.64m, a length of 240m or 360m, or other special specifications.

5. Store to prevent pressure, moisture, heat, sun, put in a cool ventilated place.