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Jiangsu Kuntai Machinery Co.,Ltd

Bronzing Machine Complete The Bronzing Process Equipment

Bronzing process is a special printing process without ink, the so-called bronzing is a certain temperature and pressure will be printed on the aluminum foil foil to the surface of the process of printing, bronzing machine is to complete the bronzing process equipment.

As the quality of the quality of aluminum foil, specifications, models, etc. will affect the quality of stamping, therefore, scientific and rational selection of electro-aluminum foil is to improve the quality of gold foil prerequisite.

Process: hot stamping preparation → installed version → pad version → hot stamping process parameters to determine → test hot → sign → formal hot stamping.

Principle of bronzing

The process is mainly the use of hot-dip transfer principle. In the joint pressure of aluminum and hot stamping plate, substrate contact, due to the heating plate heating plate to have a certain amount of heat, the aluminum alloy heat to make the hot melt resin layer and adhesive melting, dyeing resin layer sticky And the adhesion of the special heat-sensitive adhesive increases after the melting of the special heat-sensitive adhesive, and the aluminum layer is transferred to the substrate at the same time as the aluminum-based film is peeled off. As the pressure is removed, the adhesive is rapidly cooled and solidified, and the aluminum layer is firmly adhered to the substrate On the completion of a hot stamping process.

From the composition of aluminum and hot stamping mechanism, in order to obtain the ideal hot stamping effect, hot stamping used in the foil must meet the following requirements: the bottom of the coating uniform, no obvious color, color and stains; primer coating Uniform, smooth, white without impurities, no obvious stripes, sand and oxidation phenomenon; good gloss; strong firmness; high definition; model correct

Determine elements

The perfect gold foil effect depends mainly on the temperature, pressure and bronzing speed of the three with each other level. Therefore, to control the quality of bronzing, should master a reasonable bronzing temperature, bronzing pressure and bronzing speed. So as to create a good condition for the bronzing in order to eventually ensure the quality of bronzing.

temperature

Temperature on the hot stamping has a very important impact, the temperature must be controlled in the appropriate range, so that the resin layer and the appropriate melting of the adhesive in order to ensure a good transfer of aluminum.

If the temperature is too high, melting too hot, hot stamping around the melting of aluminum and produce paste version, while high temperature will make the electrochemical aluminum staining resin and aluminum layer of chemical changes, hot stamping products to reduce the brightness and loss of metallic luster, Even if the imprinted fog-like or blistering; but if the temperature is too low, melting is not sufficient, it will cause hot stamping or stamping is not strong, imprint is not strong, easy to fall off, or lack of stroke, imprinted flowers.

surroundings

The machine should be installed in a dry, ventilated, light and easy to operate.

pressure

Aluminum layer of the transfer must be transferred through the pressure to complete, hot stamping pressure on the size of the adhesion of Dian Hualv fastness. Even if the temperature is appropriate, if the pressure is insufficient, can not make good transfer of aluminum carbide to the substrate, it will produce imprinted virtual, flower and other issues; the contrary, if the pressure is too large, the pad and the substrate compression deformation is too large, Blotting will be thick, even sticky, paste version. Usually hot stamping pressure should be appropriate to adjust the small, in order to achieve fade, good adhesion fastness criteria.

Adjust the hot stamping pressure to be integrated substrate, hot stamping temperature, speed and Dian Hualv itself and other factors. In general, the paper is strong, smooth, printed ink thick, and hot stamping temperature is high, slow speed, hot stamping pressure should be smaller, otherwise, should be larger. Hot stamping pressure must be uniform, if found local hot stamping and noodles, it is likely that the pressure here is too small, should be in the flat plate on the pad a layer of thin paper, so that the pressure tends to balance.

Hot stamping the impact of the pressure is also larger. The hard pad can be used for sturdy, smooth paper, such as coated paper, glass cardboard; and soft pad is the opposite, imprint thicker, suitable for larger hot stamping, especially the surface rugged , Paper flatness, smoothness, rough paper.

At the same time the installation of hot stamping foil can not be too tight or too loose, too tight when the writing pen missing stroke; too loose is illegible, paste version.

speed

Hot stamping speed actually reflects the hot stamping of the substrate and hot stamping foil contact time, a direct impact on the printing fastness. Hot stamping speed too fast, will lead to hot stamping or imprinting; hot stamping too slow will affect the quality of stamping, but also affect the production efficiency.

Hot stamping process speed, pressure, temperature constraints, the process parameters are always according to hot stamping speed, pressure, temperature order to determine. First determine the hot stamping speed. Under normal circumstances, it will be constant processing, not easy to change, and then find out with the corresponding hot stamping pressure and hot stamping temperature, which can simplify the operating procedures, but also easy to control the quality of hot stamping.

In addition, the process of hot stamping to consider the substrate, hot stamping plate, hot stamping machine, fixture and pad is appropriate. Finally, we should look at environmental conditions, including indoor temperature and humidity, substrate temperature, indoor air cleanliness (dust content) and so on.

In short, the bronzing process is a complex process technology, in the hot stamping process only to grasp these problems in order to obtain a satisfactory hot stamping effect.


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