- A pad printing machine can do more than 12 sets of colors called multi-color overprinting, which can print out all the products at once, thus improving efficiency and saving money, even small manufacturers who have just built factories can afford this part of the cost, compared to similar products screen printing machine multi-color overprinting is expensive.
- Compared to the characteristics of the screen printing machine, pad printing machine ink layer is very thin, which means it is easy to leave traces on the surface of any product, whether it is flat, curved or wavy surface, can perfectly replicate the printing pattern, but the screen printing machine in this regard is very complicated, flat screen printing machine can only print flat, if you want to print curved and wavy surface to apply Another curved screen printing machine.
- pad printing machine has very good color expression and printing adaptability, although the screen printing technology printing out of the pattern three-dimensional sense, with the hand can feel the unevenness of the real, but if you want to compare the types of products printed, pad printing machine can be called very convenient, whether plastic or metal, whether Whether it is plastic or metal, sporting goods or glass products, pad printing machine is a piece of cake.
The pad printing machine process.
The pad printing machine process is very simple: first the planned pattern is etched on the printing plate, the etching plate is coated with ink, and then, most of the ink is transferred to the printed object through the silicone head. There are many ways to apply ink on the etching plate. First, the ink is sprayed onto the etching plate, and then the remaining ink is scraped off with a flexible squeegee.
At this point, the solvent in the ink left in the etched area evaporates and forms a gel-like surface, and then the glue head is lowered onto the etched plate and the ink is sucked on. Sucking ink and printing products glue head suck up most of the ink on the etching plate and rise, at this time, this layer of ink and evaporate part of the ink, leaving part of the undried ink surface is more conducive to be printed objects and glue head of close bonding. The shaping of the glue head should be able to occur a rolling action to drain the remaining air from the etching plate and the ink surface.
The ideal situation for the cooperation between the ink and the glue head during the generation process is that all the ink on the etching plate is transferred to the object to be printed, during the generation process (close to 10 microns or 0.01 mm thick ink adhesion is transferred to the substrate) the glue head printing is slightly affected by air, temperature, static electricity, etc.
If the entire process from the etching plate to the transfer head, to the substrate, the evaporation rate and dissolution rate is exactly controlled in equilibrium, then it is considered a successful printing. If the evaporation is too fast, the ink is absorbed before it has dried up. If the evaporation is too slow, the ink surface does not constitute a gel, not easy to make the glue head and the substrate attached.