What effect does the power of infrared heating lamp have on printing quality?
Drying effect
The effect of excessive power
When the power of Quartz Heat Lamp for Flash Curing is too high, the printing ink or coating will dry quickly. This may cause the surface to dry while the internal solvent has not completely evaporated, which is the “false drying” phenomenon.
In addition, too high power may also cause local overheating of ink or coating. In some temperature-sensitive ink systems, this may change the chemical properties of the ink and cause color changes.
The effect of too little power
If the power is too low, the drying speed of printing ink or coating will be too slow. This will extend the production cycle of the printing machine and reduce production efficiency.
Moreover, insufficiently dried printing is also prone to adhesion during storage. Because the ink or coating is not completely dried and cured, the pattern parts of adjacent printed products may stick to each other during stacking or packaging, destroying the integrity of the printing.
Preheating effect
The effect of excessive power
For the preheating of printing materials, excessive power may cause the surface temperature of the material to be too high. This may cause material deformation, especially for some thin or heat-sensitive printing materials.
In addition, too high a temperature may also destroy the surface structure of the material and reduce the adhesion between the ink and the material. For example, some plastic films may melt slightly on the surface at too high a temperature, making the film surface rough or losing its original chemical activity, which is not conducive to the subsequent printing process.
Effect of too little power
If the power is too little, the printing material cannot be preheated to the appropriate temperature. This will lead to insufficient molecular activity on the surface of the material and reduced ink adhesion.
Curing effect
The effect of too much power
When curing the printed coating or glue, too much power may cause the coating or glue to cure quickly, but uneven curing may occur. Because too high a power may cause the surface to cure first, while the internal reaction has not yet been fully reacted.
Effect of too little power
If the power is too little, the curing process will be slow. This will not only reduce production efficiency, but may also cause the coating or glue to not be completely cured.
