From the basic process of bronzing, we can see that the three basic elements of bronzing are in book printing china: temperature, pressure and hot stamping time.

In order to obtain the ideal hot stamping effect, the hot stamping temperature, hot stamping pressure, hot stamping speed and other process parameters must be reasonably grasped; in addition, the quality of raw materials related to hot stamping must also be guaranteed, such as: the hot stamping suitability of the substrate, the performance of the electrochemical aluminum material and the quality of the hot stamping plate and so on. If a certain link problem, will affect the final hot stamping effect.

Select the appropriate substrate. There is a lot of stamping, usually paper. But not all the paper bronzing effect is ideal, if the surface is rough, then not suitable, Because the electrochemical aluminum layer can not be attached to its surface very well, the unique metallic luster can not be well reflected, or even can not be bronzed, therefore, the bronzing substrate should choose the paper with dense texture, high smoothness high surface strength.

Select the appropriate electrochemical aluminum number according to the different substrate. Electrochemical aluminum number is more, common are l ,2,8,12,15 and so on. In addition to gold color stamping on book printing china, there are silver, blue, brown red, green, red and other dozens of species. Electrochemical aluminum should not only choose the appropriate color, but also choose the corresponding model according to the different substrate. Different models, its properties and hot material range is also different.

Make a hot print. Hot printing plate generally have copper plate, zinc plate and resin plate, relatively speaking, copper plate is the best, zinc plate moderate, resin plate slightly worse. Therefore, for fine hot stamping, should use copper plate as far as possible. For hot printing plate, it is required to smooth the surface, clear lines, smooth edges, no spots and burrs. If the surface is slightly uneven or slightly scratch, hair, can be used fine charcoal gently wipe, make it smooth and smooth. The depth of the plate should be slightly deep, at least above 0.6 mm, the slope is about 70°, so as to ensure that the text is clear, reduce the appearance of continuous and paste plate, and improve the printing resistance. The design of hot stamping text, lines and patterns is very fastidious. Picture and text should be as thick as possible moderate, dense reasonable, such as too small too thin, easy to lack of strokes; too thick too dense, easy paste version.

Control hot stamping temperature. the hot stamping temperature has a great influence on the melting degree of the hot melt silicone resin shedding layer and the adhesive. the hot stamping temperature must not be lower than the lower limit of the temperature resistance range of the electrochemical aluminum, which is the lowest temperature to ensure the melting of the electrochemical aluminum adhesive layer.

To reasonably grasp the hot stamping pressure. The relationship between hot stamping pressure and adhesion fastness of electrochemical aluminum is great. Even if the temperature is appropriate, if the pressure is insufficient, it will not be able to make the electrochemical aluminum and substrate stick, or produce color loss, imprinting and other phenomena; otherwise, if the pressure is too large, the pad and substrate compression deformation will be too large, resulting in paste or imprinting become thicker. Therefore, the hot stamping pressure should be carefully adjusted.

When setting hot stamping pressure in book printing china, we should mainly consider: electrochemical aluminum properties, hot stamping temperature, hot stamping speed, substrate, etc.