Perfect bronzing effect mainly depends on the temperature, pressure and bronzing speed with each other. Therefore, to control the quality of bronzing, should grasp the reasonable bronzing temperature, pressure and speed. In this way to create good conditions for bronzing, can finally ensure the quality of bronzing machine.
The temperature
Temperature has a very important impact on hot stamping, temperature must be controlled in the corresponding range, so that the dyeing resin layer and adhesive moderate melting, in order to ensure the good transfer of aluminum layer.
If the temperature is too high, melting too much, hot stamping text and text around the anodized also melt off and produce paste version, at the same time, high temperature will make anodized dyeing resin and aluminum layer chemical changes, hot stamping products brightness and loss of metallic luster, and even make imprints appear fog spot or bubble; But if the temperature is too low, melting is not sufficient, will also cause hot stamping or hot stamping is not firm, imprinting is not firm, easy to fall off, or lack of pen break, imprinting flower.
The environment
The machine should be installed in a dry, ventilated, well-lit and convenient place to operate.
pressure
Hot stamping transfer of aluminum layer must be completed by pressure, the size of hot stamping pressure affects the adhesion fastness of anodized aluminum. Even if the temperature is right, if the pressure is not enough, can not make anodized well transfer to the substrate, it will produce imprints, flower plate and other problems; On the contrary, if the pressure is too high, the pad and substrate compression deformation is too large, the impression will be thick, even adhesion, paste version. Usually stamping pressure should be appropriately reduced to achieve no fading, adhesion fastness is good.
Adjust hot stamping pressure to comprehensive substrate, hot stamping temperature, speed and anodized itself and other factors. In general, paper strong, smoothness, printing ink layer thick, and hot stamping temperature is higher, the speed is slow, hot stamping pressure should be smaller, on the contrary, should be larger. Hot stamping pressure must be uniform, if found local hot stamping and flower hemp, it is likely that the pressure here is small, should be in the place of a layer of thin paper on the plate, so that the pressure tends to balance.
Hot stamping pad on the pressure impact is also greater. Hard liner can make the print delicate, suitable for strong, smooth paper, such as coated paper, glass paper; On the contrary, soft pad, print is thick, suitable for a large area of hot stamping, especially uneven surface, paper smoothness, 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 pen is broken; Too loose handwriting is not clear, paste version.
speed
Hot stamping speed actually reflects hot stamping substrate and hot stamping foil contact time, directly affect the fastness of hot stamping. Hot stamping too fast, will lead to hot stamping or print flower; Hot stamping speed too slow will affect the quality of hot stamping, and affect production efficiency.
In the process of hot stamping speed, pressure and temperature are mutually restricted, and the process parameters are always determined in the order of hot stamping speed, pressure and temperature. First determine the hot stamping speed. Under normal circumstances, make it constant processing, not easy to change, and then find out and adapt to the hot stamping pressure and hot stamping temperature, so you can simplify the operation procedures, also easy to control the quality of hot stamping.
In addition, in the process of hot stamping to consider the substrate, hot stamping plate, hot stamping machine, fixture and pad is appropriate. Finally study the environmental conditions, including indoor temperature and humidity, base material temperature, indoor air cleaning degree (dust content).
In short, bronzing process is a complex technology, in the process of bronzing machine only grasp the above problems can obtain satisfactory results of hot stamping.